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Accessibility of cholesterol at cell surfaces [Images in Lipid Research]




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Catalytic residues, substrate specificity, and role in carbon starvation of the 2-hydroxy FA dioxygenase Mpo1 in yeast [Research Articles]

The yeast protein Mpo1 belongs to a protein family that is widely conserved in bacteria, fungi, protozoa, and plants, and is the only protein of this family whose function has so far been elucidated. Mpo1 is an Fe2+-dependent dioxygenase that catalyzes the α-oxidation reaction of 2-hydroxy (2-OH) long-chain FAs produced in the degradation pathway of the long-chain base phytosphingosine. However, several biochemical characteristics of Mpo1, such as its catalytic residues, membrane topology, and substrate specificity, remain unclear. Here, we report that yeast Mpo1 contains two transmembrane domains and that both its N- and C-terminal regions are exposed to the cytosol. Mutational analyses revealed that three histidine residues conserved in the Mpo1 family are especially important for Mpo1 activity, suggesting that they may be responsible for the formation of coordinate bonds with Fe2+. We found that, in addition to activity toward 2-OH long-chain FAs, Mpo1 also exhibits activity toward 2-OH very-long-chain FAs derived from the FA moiety of sphingolipids. These results indicate that Mpo1 is involved in the metabolism of long-chain to very-long-chain 2-OH FAs produced in different pathways. We noted that the growth of mpo1 cells is delayed upon carbon deprivation, suggesting that the Mpo1-mediated conversion of 2-OH FAs to non-hydroxy FAs is important for utilizing 2-OH FAs as a carbon source under carbon starvation. Our findings help to elucidate the as-yet-unknown functions and activities of other Mpo1 family members.




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Lipid sensing tips the balance for a key cholesterol synthesis enzyme [Images in Lipid Research]




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Coronavirus: Global Response Urgently Needed

15 March 2020

Jim O'Neill

Chair, Chatham House

Robin Niblett

Director and Chief Executive, Chatham House

Creon Butler

Research Director, Trade, Investment & New Governance Models: Director, Global Economy and Finance Programme
There have been warnings for several years that world leaders would find it hard to manage a new global crisis in today’s more confrontational, protectionist and nativist political environment.

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A currency dealer wearing a face mask monitors exchange rates in front of a screen showing South Korea's benchmark stock index in Seoul on March 13, 2020. Photo by JUNG YEON-JE/AFP via Getty Images.

An infectious disease outbreak has long been a top national security risk in several countries, but the speed and extent of COVID-19’s spread and the scale of its social and economic impact has come as an enormous and deeply worrying shock.

This pandemic is not just a global medical and economic emergency. It could also prove a decisive make-or-break point for today’s system of global political and economic cooperation.

This system was built up painstakingly after 1945 as a response to the beggar-thy-neighbour economic policies of the 1930s which led to the Second World War. But it has been seriously weakened recently as the US and China have entered a more overt phase of strategic competition, and as they and a number of the other most important global and regional players have pursued their narrowly defined self-interest.

Now, the disjointed global economic response to COVID-19, with its enormous ramifications for global prosperity and economic stability, has blown into the open the urgent need for an immediate reaffirmation of international political and economic cooperation.

What is needed is a clear, coordinated and public statement from the leaders of the world’s major countries affirming the many things on which they do already agree, and some on which they should be able to agree.

In particular that:

  • they will give the strongest possible support for the WHO in leading the medical response internationally;
  • they will be transparent and tell the truth to their peoples about the progress of the disease and the threat that it represents;
  • they will work together and with the international financial institutions to provide businesses, particularly SMEs, and individuals whatever support they need to get through the immediate crisis and avoid long-term damage to the global economy; 
  • they will ensure the financial facilities for crisis support to countries - whether at global or regional level - have whatever resources they need to support countries in difficulty;
  • they will avoid new protectionist policies - whether in trade or finance;
  • they commit not to forget the poor and vulnerable in society and those least able to look after themselves.

Such a statement could be made by G20 leaders, reflecting the group’s role since 2010 as the premier forum for international economic cooperation.

But it could be even more appropriate coming from the UN Security Council, recognising that COVID-19 is much more than an economic challenge; and also reflecting the practical fact, in a time when international travel is restricted, the UNSC has an existing mechanism in New York to negotiate and quickly agree such a statement.

A public statement by leading countries could do a great deal to help arrest a growing sense of powerlessness among citizens and loss of confidence among businesses worldwide as the virus spreads.

It could also set a new course for international political and economic cooperation, not just in relation to the virus, but also other global threats with potentially devastating consequences for economic growth and political stability in the coming years.




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Let's Emerge From COVID-19 with Stronger Health Systems

26 March 2020

Robert Yates

Director, Global Health Programme; Executive Director, Centre for Universal Health
Heads of state should grasp the opportunity to become universal health heroes to strengthen global health security

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A "Big Insurance: Sick of It" rally in New York City. Photo by Mario Tama/Getty Images.

As the COVID-19 pandemic presents the greatest threat to human health in over a century, people turn to their states to resolve the crisis and protect their health, their livelihoods and their future well-being.

How leaders perform and respond to the pandemic is likely to define their premiership - and this therefore presents a tremendous opportunity to write themselves into the history books as a great leader, rescuing their people from a crisis. Just as Winston Churchill did in World War Two.

Following Churchill’s advice to “never let a good crisis go to waste”, if leaders take decisive action now, they may emerge from the COVID-19 crisis as a national hero. What leaders must do quickly is to mitigate the crisis in a way which has a demonstrable impact on people’s lives.

Given the massive shock caused by the pandemic to economies across the world, it is not surprising that heads of state and treasury ministers have implemented enormous economic stimulus packages to protect businesses and jobs – this was to be expected and has been welcome.

National heroes can be made

But, in essence, this remains primarily a health crisis. And one obvious area for leaders to act rapidly is strengthening their nation’s health system to stop the spread of the virus and successfully treat those who have fallen sick. It is perhaps here that leaders have the most to gain - or lose - and where national heroes can be made.

This is particularly the case in countries with weak and inequitable health systems, where the poor and vulnerable often fail to access the services they need. One major practical action that leaders can implement immediately is to launch truly universal, publicly-financed health reforms to cover their entire population – not only for COVID-19 services but for all services.

This would cost around 1-2% GDP in the short-term but is perfectly affordable in the current economic climate, given some of the massive fiscal stimuluses already being planned (for example, the UK is spending 15% GDP to tackle COVID-19).

Within one to two years, this financing would enable governments to implement radical supply side reforms including scaling up health workforces, increasing the supply of essential medicines, diagnostics and vaccines and building new infrastructure. It would also enable them to remove health service user fees which currently exclude hundreds of millions of people worldwide from essential healthcare. Worldwide these policies have proven to be effective, efficient, equitable and extremely popular.

And there is plenty of precedent for such a move. Universal health reform is exactly what political leaders did in the UK, France and Japan as post-conflict states emerging from World War Two. It is also the policy President Kagame launched in the aftermath of the genocide in Rwanda, as did Prime Minister Thaksin in Thailand after the Asian Financial Crisis in 2002, and the Chinese leadership did following the SARS crisis, also in 2003.

In China’s case, reform involved re-socialising the health financing system using around 2% GDP in tax financing to increase health insurance coverage from a low level of one-third right up to 96% of the population.

All these universal health coverage (UHC) reforms delivered massive health and economic benefits to the people - just what is needed now to tackle COVID-19 - and tremendous political benefits to the leaders that implemented them.

When considering the current COVID-19 crisis, this strategy would be particularly relevant for countries underperforming on health coverage and whose health systems are more likely to be overwhelmed if flooded with a surge of patients, such as India, Pakistan, Bangladesh, Myanmar, Indonesia and most of sub-Saharan Africa, where many governments spend less than 1% of their GDP on health and most people have to buy services over the counter.

But also the two OECD countries without a universal health system – the United States and Ireland – are seeing the threat of COVID-19 already fuelling the debate about the need to create national, publicly-financed health system. And the presidents of South Africa, Kenya and Indonesia have already committed their governments to eventually reach full population coverage anyway, and so may use this crisis to accelerate their own universal reforms. 

Although difficult to predict which leaders are likely to grasp the opportunity, if some of these countries now fast-track nationwide UHC, at least something good will be coming from the crisis, something which will benefit their people forever. And ensuring everyone accesses the services they need, including public health and preventive services, also provides the best protection against any future outbreaks becoming epidemics.

Every night large audiences are tuning in to press briefings fronted by their heads of state hungry for the latest update on the crisis and to get reassurance that their government’s strategy will bring the salvation they desperately need. To truly improve health security for people across the world, becoming UHC heroes could be the best strategic decision political leaders ever make.




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COVID-19 Impact on Refugees is Also Political

31 March 2020

Dr Lina Khatib

Director, Middle East and North Africa Programme
The spread of coronavirus in the Levant puts Syrian as well as other refugees and internally displaced people at particular risk because of the policies and practices of the authorities.

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The word Corona written in the sand on the beach in Lebanon's southern city of Saida. amid the spread of coronavirus in the country. Photo by MAHMOUD ZAYYAT/AFP via Getty Images.

As Lebanon strains to contain COVID-19, it is not clear which governmental public health policies apply to refugees. The government announced free testing for coronavirus in the public Rafiq Hariri University Hospital in Beirut but has not mentioned if refugees are eligible.

Lebanon’s coronavirus containment strategy is based on self-reporting and, given incidents of forced deportation and harassment of Syrian refugees from both the authorities and local communities, it is certainly less likely refugees would present themselves to the health authorities for fear of deportation.

Despite agreeing a Lebanon Crisis Response Plan with the UN for refugees, different ministries were left to implement it without coordination, just as Lebanese politicians from all sides started trying to rally popular support for ridding Lebanon from refugees - in particular from Syria, who Lebanese leaders say are causing a strain on the country’s already weak infrastructure.

This finger pointing is coupled with the leaders’ own complete disregard for the rampant corruption and lack of accountability within Lebanon’s political class, which contribute to the weakening of the country’s infrastructure.

For refugees who do find themselves back in Syria, there are different challenges according to which area they are in. In the north-east, the WHO and international NGOs (INGOs) negotiate with both Kurdish authorities as well as the government - each presenting its own hurdles.

Kurdish authorities in northeast Syria have closed the Semalka border with Iraqi Kurdistan, posing a serious dilemma for INGOs offering services in north-east Syria but concerned about their staff safety whose movement is now curtailed.

The government of Syria has stipulated all emergency response must go through its ministries. But this limits what the WHO can do in the country and gives Syrian authorities the ability to block ‘cross-line aid’ which goes from government-controlled to non-government areas.

Despite reports that doctors raised the alarm about suspected cases well before patient zero was confirmed, the government appears to be either covering up the actual extent of the spread of COVID-19 or failing to respond. Some limited testing kits have arrived but testing has barely started.

The WHO’s Syria plan is divided into three regions (north-west, north-east, and areas under government control). But concerns remain as to how workable such a decentralized plan is because of the government’s practices. In January, the UN Security Council did not renew the cross-border response resolution for the Yaroubiye border crossing between Syria and Iraq that the WHO was using to send medical supplies into north-east Syria.

Syrian authorities do not permit recently authorized ‘cross-line’ responders to engage with non-government authorities in areas outside regime control. This essentially voids the authorization to work cross-line as it is practically impossible to implement programs. The WHO has sought approval from the Syrian Ministry of Foreign Affairs to move medical supplies by land to north-east Syria.

While promising facilitation, the Ministry’s reply comes with conditions of seeking detailed approval for every shipment. When Eastern Ghouta was under siege, similar conditions led to certain supplies being removed from UN/ICRC convoys to Eastern Ghouta, and there is no guarantee this will not happen again.

Due to lack of capacity in north-east Syria, coronavirus tests conducted by the WHO there must be processed through the Central Public Health Laboratory in Damascus. Samples are transported twice a week from Qamishli to Damascus but no results were ever received from Damascus for those tests.

While the WHO is able to coordinate access to north-west Syria with the Turkish authorities, the prospective coronavirus testing capacity in the Idlib region is low – despite claims that thousands of kits are arriving, a lack of resource on the ground means potentially only 20 tests per day could be done in an area inhabited by an estimated three million people.

Following the recently announced ceasefire in the area, many internally displaced people are returning from the Turkish border to their homes in the north-west, but such mass movement increases the risk of coronavirus spreading. People also continue to move between Syria, Iraq, Turkey and Lebanon, posing a challenge to the WHO’s COVID-19 response in the Levant, as the WHO has distinct response plans for each country in the region and it is difficult to coordinate across these plans.

Challenges face refugees even if they head towards Europe due to the potential for conflation between migration control and coronavirus outbreak control. Aurelie Ponthieu, Coordinator for Forced Migration at Médecins Sans Frontières (MSF) says there is a risk some countries could use COVID-19 to impose draconian measures towards asylum seekers.

The crisis has also put a halt to search and rescue operations in the Mediterranean because European countries are not allowing boats carrying migrants to disembark under the pretext of limiting the spread of coronavirus. And for migrants who already made it - such as in Greece - they are now being put in collective quarantines in asylum centers, often with poor medical facilities.

Ponthieu also reports that migrants being quarantined on overcrowded navy ships docked in Greek ports, making social distancing impossible. And she is concerned the Greek authorities are imposing a curfew on asylum seekers but not on the local population.

UNHCR is stressing that people’s right of asylum must not be overruled by concerns about the spread of coronavirus, while local and international NGOs across the Levant are trying to coordinate their advocacy on lifting restrictions on freedom of movement for humanitarian workers and on other policies and practices by authorities in the region which are adversely affecting refugee and other vulnerable communities.

The international community must not lose sight of the impact of the crisis on refugees and migrants. It is not enough simply to supply humanitarian and medical assistance without paying attention to the policies and practices of the different authorities who have direct control over the fate of vulnerable communities.

The author would like to thank Aurelie Ponthieu and the two INGO field workers who all agreed to be interviewed to inform this analysis piece.




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Why The Insurgency in Northern Mozambique Has Got Worse

1 April 2020

Dr Alex Vines OBE

Managing Director, Ethics, Risk & Resilience; Director, Africa Programme
Two attacks on towns in northern Mozambique by suspected jihadists point to a rapidly deteriorating security crisis.

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Macomia, Cabo Delgado, Northern Mozambique. Photo by EMIDIO JOSINE/AFP via Getty Images.

On March 23 to 24, the centre of Mocimboa da Praia in Cabo Delgado province was occupied by up to 40 “jihadists”, who targeted government facilities, including a barracks, and brandished banners of affiliation to the so-called Islamic State.

On March 25, suspected jihadists raided the town of Quissanga and destroyed the district police headquarters. They too carried an Islamic State flag. Twenty to 30 members of Mozambique’s security forces were killed in both attacks.

Mocimboa da Praia is just south of the Afungi Peninsula, the location of gas projects worth $60- billion. Mocimboa was briefly occupied in late 2017, during attacks claimed by a group known as Ahlu Sunnah Wa-Jama (or al-Sunnah) that marked the start of a brutal low-intensity conflict, with widespread human rights abuses and attacks on civilians.

Up to 1,000 people have now been killed and 100,000 displaced. More recently, The Islamic State Central Africa Province (Iscap), affiliated with the Islamic State group, has claimed responsibility for the attacks. Video and photos of these most recent events, along with the testimony of frightened residents and overstretched government officials, suggest a shift of strategy by the insurgents.

There seems to have been an effort to avoid harming civilians, to win hearts and minds by redistributing stolen food, medicine and fuel to “loyal” residents, and to direct attacks on the state and its symbols, such as police stations and military barracks. It is difficult from a distance to assess if there was any genuine pleasure over these attacks among local people; while residents in both towns that did not flee seemed to welcome the attackers, this may well have been out of fear that the government is currently unable to guarantee their security.

These attacks also indicate that the jihadist-linked insurgents are growing in confidence. They are confronting government security forces with little appetite for fighting. The Mozambican government has been expecting setbacks like those of Mocimboa and Quissanga — its forces are demoralised and many commanders exhausted or corrupted by an emerging war economy. Jihadists are also taking tactical advantage before a reformed and more effective government counterinsurgency effort is introduced in response.

President Filipe Nyusi, inaugurated in January for his second term, has made this crisis his prime focus and has become the de-facto minister of defence.

Military reform and the role of private military companies

But there is no quick fix. Most importantly, the Mozambican military and security forces need to be restructured. They were unable to win the Mozambican civil war (1977-1992), even with international support, and have not improved in capacity or conduct since. They now face a complex, multilayered and asymmetrical conflict, mostly drawing upon local and regional grievances and networks but increasingly also attracting some limited encouragement and advice from further afield.

Nyusi will need to build-up trusted relationships in the military in the way he has successfully done with parts of the intelligence community. The Mozambican government has already reached out to international expertise — though not necessarily the right kind. The founder of the Blackwater private military company, Erik Prince, supplied two helicopters and support crew for the Mozambican military in mid-2019, before being replaced by some 170 Russian privateers linked to the Wagner Group.

The Wagner contingent arrived in September 2019 at Nacala airport with trucks, drones and a Mi-17 helicopter gunship, then deployed into the combat zone of northern Cabo Delgado. Setbacks, including at least two dead Russians, forced a tactical fallback to Nacala, though a new effort is reported to have been underway since late February 2020.

The Mozambican government is also considering a number of proposals from other private military companies. Maputo needs to consider these carefully; Israeli or Gulf State involvement in any form might exasperate rather than alleviate this crisis.

The Tanzanian connection

But market-led security and military providers will not end this insurgency. Nor will the engagement of states such as the United States, France, the United Kingdom or Angola, all of which have made their own offers of support. What would significantly make a difference is much closer to home: serious Tanzanian engagement.

This insurgency is concentrated in districts bordering Tanzania and there is clear-cut intelligence of connections into Tanzania and beyond. Swahili is also a lingua franca for the jihadists, connecting them up the East African coast, and into eastern Congo and elsewhere.

It is puzzling, given the deep shared history between Tanzania and Mozambique, that the bilateral relationship is as patchy as it is today: during the liberation struggle (1965-1974) against the Portuguese, Mozambique’s ruling party Frelimo maintained rear bases in Tanzania, and Nyusi was educated there.

Conspiracy theories circulate that Tanzania has encouraged the Cabo Delgado insurgency to weaken its neighbour, or at least displace radicalised individuals from Tanzanian soil into Mozambique.

President John Magafuli of Tanzania did not attend the January inauguration of Nyusi. It has become urgent that Magafuli (who is also the current chair of the regional body, the Southern African Development Community) and Nyusi meet face-to-face to map out improved intelligence sharing and a joint strategy to respond to an emerging regional threat.

Southern Africa is locking down because of Covid-19, which will distract the government’s ability to focus fully on this crisis and create a perfect moment for the infant insurgency in Cabo Delgado to grow. More military setbacks should be expected in coming months.

But the Mozambican government can still contain and prevail if it seriously reforms its military, builds strong alliances with its regional neighbours (especially Tanzania), chooses its private security contractors and international partnerships wisely, and backs military efforts with better intelligence and developmental interventions that offer alternative pathways to potential recruits.

But despite Maputo’s hope that significant progress will be made over the coming year, and the setting up of a presidential task force to evaluate progress and intelligence, it is likely that Mozambique and its partners will need to prepare themselves for a drawn-out struggle.

This article originally appeared in the Mail & Guardian




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Justice for the Rohingya: Lessons from the Khmer Rouge Tribunal

8 April 2020

Sandra Smits

Programme Manager, Asia-Pacific Programme
The Cambodian case study illustrates the challenges of ensuring justice and accountability for the Rohingya in Myanmar.

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Coast guards escort Rohingya refugees following a boat capsizing accident in Teknaf on 11 February 2020. Photo: Getty Images.

International criminal justice provides a stark reminder that state sovereignty is not an absolute, and that the world’s most heinous crimes should be prosecuted at an international level, particularly where domestic systems lack the capacity or will to hold perpetrators to account. 

The post-Cold War period witnessed a dramatic rise in the number of international tribunals with jurisdiction over war crimes and serious human rights abuses in countries including Cambodia, East Timor, Rwanda, Liberia, Sierra Leone and Yugoslavia. With these processes approaching, or having reached the end of their dockets, many have called for the creation of new tribunals to address more recent conflicts, including the army crackdown in Myanmar in 2017 that resulted in evidence of crimes against humanity against the Rohingya

In January this year, the International Court of Justice (ICJ) imposed emergency provisional measures on Myanmar, instructing it to prevent genocidal violence against its Rohingya minority. But a final judgement is expected to take years and the ICJ has no way of enforcing these interim measures. Myanmar has already responded defiantly to international criticism

Model for justice

Myanmar is not the first country to face scrutiny for such crimes in Southeast Asia. The Extraordinary Chambers in the Courts of Cambodia (ECCC), more commonly known as the Khmer Rouge Tribunal was established in 1997 to prosecute Khmer Rouge leaders for alleged violations of international law and serious crimes perpetrated during the Cambodian genocide. This provides an opportunity to consider whether the Tribunal can act as a ‘hybrid’ model for justice in the region. 

The first lesson that can be taken from the Cambodian context is that the state must have the political will and commitment to pursue accountability. It was indeed the Cambodian government itself, who requested international assistance from the United Nations (UN), to organize a process for holding trials. The initial recommendation of the UN-commissioned Group of Experts was for the trial to be held under UN control, in light of misgivings about Cambodia’s judicial system. Prime Minister Hun Sen rejected this assessment and in prolonged negotiations, continued to spearhead the need for domestic involvement (arguably, in order to circumscribe the search for justice). This eventually resulted in the creation of a hybrid body consisting of parallel international and Cambodian judges and prosecutors with supermajority decision-making rules.   

It is worth noting that the Hun Sen government initially chose to do business with former Khmer Rouge leaders, until it became more advantageous to embrace a policy of putting them on trial. It is possible to infer from this that there will be no impetus for action in Myanmar until it is domestically advantageous to do so. At present, this appetite is clearly lacking, demonstrated by de-facto leader Aung San Suu Kyi shying away from accountability and instead defending the government’s actions before the ICJ.

One unique aspect of the Khmer Rouge Tribunal has been the vast participation by the Cambodian people in witnessing the trials as well as widespread support for the tribunal. This speaks to the pent-up demand in Cambodia for accountability and the importance of local participation. While international moral pressure is clear, external actors cannot simply impose justice for the Rohingya when there is no domestic incentive or support to pursue this. The reality is that the anti-Rohingya campaign has galvanized popular support from the country’s Buddhist majority. What is more, the Rohingya are not even seen as part of Myanmar so there is an additional level of disenfranchisement.

Secondly, the Cambodian Tribunal illustrates the need for safeguards against local political interference. The ECCC was designed as national court with international participation. There was an agreement to act in accordance with international standards of independence and impartiality, but no safeguards in place against serious deficiencies in the Cambodian judicial system. Close alliances between judges and the ruling Cambodian People’s Party, as well as high levels of corruption meant the tribunal effectively gave Hun Sen’s government veto power over the court at key junctures. Despite the guise of a hybrid structure, the Cambodian government ultimately retained the ability to block further prosecutions and prevent witnesses from being called. 

In Myanmar, political interference could be a concern, but given there is no popular support for justice and accountability for crimes committed against the Rohingya, the prospects of a domestic or hybrid process remain unlikely. However, there are still international options. The investigation by the International Criminal Court (ICC) into crimes that may have taken place on the Myanmar–Bangladesh border represents a potential route for justice and accountability. The UN Human Rights Council has also recently established the Independent Investigative Mechanism for Myanmar (IIMM), mandated to collect and preserve evidence, as well as to prepare files for future cases before criminal courts.

Finally, the Cambodian case illustrates the culture of impunity in the region. The ECCC was conceived partly as a showcase for international standards of justice, which would have a ‘contagion effect’ upon the wider Cambodian and regional justice systems. 

Cambodia was notorious for incidents in which well-connected and powerful people flouted the law. This culture of impunity was rooted in the failure of the government to arrest, try and punish the Khmer Rouge leadership. The Tribunal, in holding perpetrators of the worst crimes to account, sought to send a clear signal that lesser violations would not be tolerated in the same way. Arguably, it did not achieve this in practice as Cambodia still has a highly politicized judicial system with high levels of corruption and clear limits to judicial independence

What this illustrates is that the first step towards accountability is strengthening domestic institutions. The United Nation’s Special Rapporteur on the situation of human rights in Myanmar has urged domestic authorities to embrace democracy and human rights, highlighting the need to reform the judicial system in order to ensure judicial independence, remove systemic barriers to accountability and build judicial and investigatory capacity in accordance with international standards. Based on this assessment, it is clear that domestic institutions are currently insufficiently independent to pursue accountability.

The ECCC, despite its shortcomings, does stand as proof that crimes against humanity will not go completely unpunished. However, a process does not necessarily equal justice. The region is littered with justice processes that never went anywhere: Indonesia, Nepal, and Sri Lanka. International recourse is also challenging in a region with low ratification of the ICC, and the absence of regional mechanisms like the Inter-American Court of Human Rights, the European Court of Human Rights, and the African Court on Human and Peoples’ Rights (although their remit is not mass atrocity prosecutions). 

The Cambodian case study illustrates the challenges of ensuring justice and accountability within the region. The end of impunity is critical to ensure peaceful societies, but a purely legalistic approach will fail unless it is supported by wider measures and safeguards. It is these challenges, that undermine the prospects for ensuring justice for the Rohingya within Myanmar.




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Blaming China Is a Dangerous Distraction

15 April 2020

Jim O'Neill

Chair, Chatham House
Chinese officials' initial effort to cover up the coronavirus outbreak was appallingly misguided. But anyone still focusing on China's failings instead of working toward a solution is essentially making the same mistake.

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Medical staff on their rounds at a quarantine zone in Wuhan, China. Photo by STR/AFP via Getty Images.

As the COVID-19 crisis roars on, so have debates about China’s role in it. Based on what is known, it is clear that some Chinese officials made a major error in late December and early January, when they tried to prevent disclosures of the coronavirus outbreak in Wuhan, even silencing healthcare workers who tried to sound the alarm.

China’s leaders will have to live with these mistakes, even if they succeed in resolving the crisis and adopting adequate measures to prevent a future outbreak. What is less clear is why other countries think it is in their interest to keep referring to China’s initial errors, rather than working toward solutions.

For many governments, naming and shaming China appears to be a ploy to divert attention from their own lack of preparedness. Equally concerning is the growing criticism of the World Health Organization (WHO), not least by Donald Trump who has attacked the organization - and threatens to withdraw US funding - for supposedly failing to hold the Chinese government to account.

Unhelpful and dangerous

At a time when the top global priority should be to organize a comprehensive coordinated response to the dual health and economic crises unleashed by the coronavirus, this blame game is not just unhelpful but dangerous.

Globally and at the country level, we all desperately need to do everything possible to accelerate the development of a safe and effective vaccine, while in the meantime stepping up collective efforts to deploy the diagnostic and therapeutic tools necessary to keep the health crisis under control.

Given there is no other global health organization with the capacity to confront the pandemic, the WHO will remain at the center of the response, whether certain political leaders like it or not.

Having dealt with the WHO to a modest degree during my time as chairman of the UK’s independent Review on Antimicrobial Resistance (AMR), I can say that it is similar to most large, bureaucratic international organizations.

Like the International Monetary Fund (IMF), the World Bank, and the United Nations, it is not especially dynamic or inclined to think outside the box. But rather than sniping at these organizations from the sidelines, we should be working to improve them.

In the current crisis, we all should be doing everything we can to help both the WHO and the IMF to play an effective, leading role in the global response. As I have argued before, the IMF should expand the scope of its annual Article IV assessments to include national public-health systems, given that these are critical determinants in a country’s ability to prevent or at least manage a crisis like the one we are now experiencing.

I have even raised this idea with IMF officials themselves, only to be told that such reporting falls outside their remit because they lack the relevant expertise. That answer was not good enough then, and it definitely isn’t good enough now.

If the IMF lacks the expertise to assess public health systems, it should acquire it. As the COVID-19 crisis makes abundantly clear, there is no useful distinction to be made between health and finance. The two policy domains are deeply interconnected, and should be treated as such.

In thinking about an international response to today’s health and economic emergency, the obvious analogy is the 2008 global financial crisis which started with an unsustainable US housing bubble, fed by foreign savings owing to the lack of domestic savings in the United States.

When the bubble finally burst, many other countries sustained more harm than the US did, just as the COVID-19 pandemic has hit some countries much harder than it hit China.

And yet not many countries around the world sought to single out the US for presiding over a massively destructive housing bubble, even though the scars from that previous crisis are still visible. On the contrary, many welcomed the US economy’s return to sustained growth in recent years, because a strong US economy benefits the rest of the world.

So, rather than applying a double standard and fixating on China’s undoubtedly large errors, we would do better to consider what China can teach us. Specifically, we should be focused on better understanding the technologies and diagnostic techniques that China used to keep its - apparent - death toll so low compared to other countries, and to restart parts of its economy within weeks of the height of the outbreak.

And for our own sakes, we also should be considering what policies China could adopt to put itself back on a path toward 6% annual growth, because the Chinese economy inevitably will play a significant role in the global recovery.

If China’s post-pandemic growth model makes good on its leaders’ efforts in recent years to boost domestic consumption and imports from the rest of the world, we will all be better off.

This article was originally published in Project Syndicate




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Nigeria’s Political Leaders Need to Win Trust to Tackle COVID-19

23 April 2020

Elizabeth Donnelly

Deputy Director, Africa Programme

Idayat Hassan

Director, Centre for Democracy and Development
COVID-19 will require Nigeria's government to rely on already stretched communities and informal institutions. But there is a yawning gap in trust and accountability between citizens and the state in Nigeria – the crisis will force the state to attempt to bridge this divide.

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News stand in Lagos, Nigeria on April 12, 2020. Photo by PIUS UTOMI EKPEI/AFP via Getty Images.

Nigeria is better placed than many to respond to the arrival of the coronavirus disease. In 2014, it successfully contained a deadly Ebola virus outbreak and the country’s current score on the Epidemic Preparedness Index (38.9 per cent) is higher than the African and global averages.

But the outbreak is compounding Nigeria’s numerous pre-existing crises. It was already grappling with a Lassa fever outbreak that has claimed more than one hundred lives in 2020, the aftermath of recession, and conflict and insecurity within its borders.

Effective leadership to build confidence will be vital. However, President Muhammadu Buhari has made few appearances, delivering his first speech on Nigeria’s response more than one month after the country’s first recorded case. And the indefinite suspension of meetings of the Federal Executive Council has raised questions on the efficacy of the response.

Extended lockdown imposed

The recent loss of President Buhari’s steadfast chief of staff Abba Kyari as a result of contracting COVID-19 is a further significant setback for the presidency. But the administration has established a presidential task force to develop a national strategy and an extended lockdown has been imposed on the most affected states  Lagos, Ogun and the Federal Capital Territory of Abuja. The country has also closed national borders and is expanding testing capacity to 1,500 per day.

However, when Nigeria’s first case was recorded on February 27 it was state governments that initially took action  shutting schools, closing state borders and imposing lockdowns. Going forwards, the 36 state governments will have a key role to play although their governance capacity and commitment varies widely.

The federal government has released $2.7 million to support the Nigeria Centre for Disease Control (NCDC), and promised an additional $18 million  but this falls well short of the estimated $330 million needed to tackle the coronavirus disease in Nigeria. The government is looking to its private sector to help make up the difference. The country’s finances are under severe pressure with Nigerian crude oil  the main source of government revenue and foreign exchange reserves  selling for as low as $12 or $13 a barrel (with production costs of around $22 per barrel), and a debt servicing to revenue ratio of more than 50 per cent even before the oil price crash.

Facing its second recession in four years, with -3.4 per cent GDP growth forecast by the IMF, the country has little economic resilience. Nigeria will not be able to sustain restrictions on its 81.15 million-strong workforce, 83.2 per cent of which operate in the informal sector. One area at particular risk is food security, as the pandemic is disrupting farming, supply chains and trade. By building on past benefit programmes, the federal government is providing cash and distributing food to vulnerable households, but this important effort is being hampered by poor communication, inefficiencies and a lack of transparency  longstanding challenges in many aspects of public service delivery in Nigeria.

In the absence of a reliable social safety net, Nigerians trust and rely on their families, communities and the informal economy to see them through difficult times. It is these informal mechanisms that lend Nigeria its oft-referenced resilience, which has enabled society to function and continue while a largely disconnected political class has focused on self-enrichment.

It is through these traditional channels that the government will need to deliver information, support, testing and treatment. But without high levels of trust, the administration may find it difficult to do so. Many Nigerians initially considered the pandemic a hoax, some describing it as a ‘rich man’s disease’, while others see it as another conspiracy by politicians to loot the treasury.

Lockdown measures have also heightened tensions across the country. Some citizens are rebelling and in one instance burned down a police station in response to the closure of mosques in Katsina state. Marking a further breakdown in the relationship between the population and its leaders, the Nigerian National Human Rights Commission (NHRC) recently reported security services enforcing the lockdown have extrajudicially killed 18 people, while, so far, COVID-19 has killed 25 people in Nigeria.

Mitigating the spread and worst consequences of the virus will depend on the state rebuilding trust with its citizens through effective communication and action. It is particularly important that the community mechanisms of support are protected as they come under growing pressure as communities become increasingly affected by the virus.

The stark choice facing most Nigerians  between risking starvation and risking contagion  means a sustained lockdown is not a tenable option. People will choose to go to work. This will especially be the case as people grow weary of measures imposed upon them by a state that the vast majority of the population believe does not serve or care for them.

Having largely ignored the needs of Nigeria’s citizens for decades, the political class face an uphill battle in building trust with the population. Earning this trust is not only crucial for the struggle against COVID-19 but also for Nigeria’s longer-term progress and system of political governance.




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Can Protest Movements in the MENA Region Turn COVID-19 Into an Opportunity for Change?

29 April 2020

Dr Georges Fahmi

Associate Fellow, Middle East and North Africa Programme
The COVID-19 pandemic will not in itself result in political change in the MENA region, that depends on the ability of both governments and protest movements to capitalize on this moment. After all, crises do not change the world - people do.

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An aerial view shows the Lebanese capital Beirut's Martyrs Square that was until recent months the gathering place of anti-government demonstrators, almost deserted during the novel coronavirus crisis, on 26 March 2020. Photo by -/AFP via Getty Images.

COVID-19 has offered regimes in the region the opportunity to end popular protest. The squares of Algiers, Baghdad, and Beirut – all packed with protesters over the past few months – are now empty due to the pandemic, and political gatherings have also been suspended. In Algeria, Iraq and Lebanon, COVID-19 has achieved what snipers, pro-regime propaganda, and even the economic crisis, could not.

Moreover, political regimes have taken advantage of the crisis to expand their control over the political sphere by arresting their opponents, such as in Algeria where the authorities have cracked down on a number of active voices of the Hirak movement. Similarly, in Lebanon, security forces have used the pandemic as an excuse to crush sit-ins held in Martyr’s Square in Beirut and Nour Square in Tripoli.

However, despite the challenges that the pandemic has brought, it also offers opportunities for protest movements in the region. While the crisis has put an end to popular mobilization in the streets, it has  created new forms of activism in the shape of solidarity initiatives to help those affected by its consequences.

In Iraq, for example, protest groups have directed their work towards awareness-raising and sharing essential food to help mitigate the problem of food shortages and rising prices across the country. In Algeria, Hirak activists have run online campaigns to raise awareness about the virus and have encouraged people to stay at home. Others have been cleaning and disinfecting public spaces. These initiatives increase the legitimacy of the protest movement, and if coupled with political messages, could offer these movements an important chance to expand their base of popular support.

Exposes economic vulnerability

Economic grievances, corruption and poor provision of public services have been among the main concerns of this recent wave of protests. This pandemic only further exposes the levels of economic vulnerability in the region. COVID-19 is laying bare the socio-economic inequalities in MENA countries; this is particularly evident in the numbers of people engaged in the informal economy with no access to social security, including health insurance and pensions.

Informal employment, approximately calculated by the share of the labour force not contributing to social security, is estimated to amount to 65.5% of total employment in Lebanon, 64.4% in Iraq, and 63.3% in Algeria. The crisis has underscored the vulnerability of this large percentage of the labour force who have been unable to afford the economic repercussions of following state orders to stay at home.

The situation has also called attention to the vital need for efficient public services and healthcare systems. According to the fifth wave of the Arab Barometer, 74.4% of people in Lebanon are dissatisfied with their country’s healthcare services, as are 67.8% of people in Algeria and 66.5% in Iraq.

Meanwhile, 66.2% of people in Lebanon believe it is necessary to pay a bribe in order to receive better healthcare, as do 56.2% of people in Iraq and 55.9% in Algeria. The COVID-19 crisis has highlighted the need for more government investment in public healthcare systems to render them more efficient and less corrupt, strengthening the protesters’ case for the need for radical socio-economic reforms.

On the geopolitical level, the crisis puts into question the stability-focused approach of Western powers towards the region. For years, Western powers have directed their aid towards security forces in the interests of combating terrorism but COVID-19 has proved itself to be a much more lethal challenge to both the region and the West.

Facing this new challenge requires international actors to reconsider their approach to include supporting health and education initiatives, as well as freedom of expression and transparency. As argued by Western policymakers themselves, it was China’s lack of transparency and slow response that enabled the proliferation of the virus, when it could have been contained in Wuhan back in December 2019.

This crisis therefore offers regional protest movements the opportunity to capitalize on this moment and push back against the policies of Western powers that have invested in regional stability only to the extent of combating Islamic jihad. 

But crises do not change the world, people do. The COVID-19 pandemic will not in itself result in political change in the MENA region. Rather, it brings opportunities and risks that, when exploited, will allow political actors to advance their own agendas. While the crisis has put an end to popular mobilization and allowed regimes to tighten their grip over the political sphere, behind these challenges lie real opportunities for protest movements.

The current situation represents a possibility for them to expand their popular base through solidarity initiatives and has exposed more widely the importance of addressing socio-economic inequalities. Finally, it offers the chance to challenge the stability-focused approach of Western powers towards the region which until now has predominantly focused on combating terrorism.




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Coronavirus: Public Health Emergency or Pandemic – Does Timing Matter?

1 May 2020

Dr Charles Clift

Senior Consulting Fellow, Global Health Programme
The World Health Organization (WHO) has been criticized for delaying its announcements of a public health emergency and a pandemic for COVID-19. But could earlier action have influenced the course of events?

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WHO director-general Dr Tedros Adhanom Ghebreyesus at the COVID-19 press briefing on March 11, 2020, the day the coronavirus outbreak was classed as a pandemic. Photo by FABRICE COFFRINI/AFP via Getty Images.

The World Health Organization (WHO) declared the spread of COVID-19 to be a Public Health Emergency of International Concern (PHEIC) on January 30 this year and then characterized it as a pandemic on March 11.

Declaring a PHEIC is the highest level of alert that WHO is obliged to declare, and is meant to send a powerful signal to countries of the need for urgent action to combat the spread of the disease, mobilize resources to help low- and middle-income countries in this effort and fund research and development on needed treatments, vaccines and diagnostics. It also obligates countries to share information with WHO.

Once the PHEIC was declared, the virus continued to spread globally, and WHO began to be asked why it had not yet declared the disease a pandemic. But there is no widely accepted definition of a pandemic, generally it is just considered an epidemic which affects many countries globally.

Potentially more deadly

The term has hitherto been applied almost exclusively to new forms of flu, such as H1N1 in 2009 or Spanish flu in 1918, where the lack of population immunity and absence of a vaccine or effective treatments makes the outbreak potentially much more deadly than seasonal flu (which, although global, is not considered a pandemic).

For COVID-19, WHO seemed reluctant to declare a pandemic despite the evidence of global spread. Partly this was because of its influenza origins — WHO’s emergency programme executive director said on March 9 that ‘if this was influenza, we would have called a pandemic ages ago’.

He also expressed concern that the word traditionally meant moving — once there was widespread transmission — from trying to contain the disease by testing, isolating the sick and tracing and quarantining their contacts, to a mitigation approach, implying ‘the disease will spread uncontrolled’.

WHO’s worry was that the world’s reaction to the word pandemic might be there was now nothing to be done to stop its spread, and so countries would effectively give up trying. WHO wanted to send the message that, unlike flu, it could still be pushed back and the spread slowed down.

In announcing the pandemic two days later, WHO’s director-general Dr Tedros Adhanom Ghebreyesus reemphasised this point: ‘We cannot say this loudly enough, or clearly enough, or often enough: all countries can still change the course of this pandemic’ and that WHO was deeply concerned ‘by the alarming levels of inaction’.

The evidence suggests that the correct message did in fact get through. On March 13, US president Donald Trump declared a national emergency, referring in passing to WHO’s announcement. On March 12, the UK launched its own strategy to combat the disease. And in the week following WHO’s announcements, at least 16 other countries announced lockdowns of varying rigour including Austria, Belgium, Canada, Czech Republic, Denmark, Finland, France, Germany, Hungary, Netherlands, Norway, Poland, Portugal, Serbia, Spain and Switzerland. Italy and Greece had both already instituted lockdowns prior to the WHO pandemic announcement.

It is not possible to say for sure that WHO’s announcement precipitated these measures because, by then, the evidence of the rapid spread was all around for governments to see. It may be that Italy’s dramatic nationwide lockdown on March 9 reverberated around European capitals and elsewhere.

But it is difficult to believe the announcement did not have an effect in stimulating government actions, as was intended by Dr Tedros. Considering the speed with which the virus was spreading from late February, might an earlier pandemic announcement by WHO have stimulated earlier aggressive actions by governments?

Declaring a global health emergency — when appropriate — is a key part of WHO’s role in administering the International Health Regulations (IHR). Significantly, negotiations on revisions to the IHR, which had been ongoing in a desultory fashion in WHO since 1995, were accelerated by the experience of the first serious coronavirus outbreak — SARS — in 2002-2003, leading to their final agreement in 2005.

Under the IHR, WHO’s director-general decides whether to declare an emergency based on a set of criteria and on the advice of an emergency committee. IHR defines an emergency as an ‘extraordinary event that constitutes a public health risk through the international spread of disease and potentially requires a coordinated international response’.

In the case of COVID-19, the committee first met on January 22-23 but were unable to reach consensus on a declaration. Following the director-general’s trip to meet President Xi Jinping in Beijing, the committee reconvened on January 30 and this time advised declaring a PHEIC.

But admittedly, public recognition of what a PHEIC means is extremely low. Only six have ever been declared, with the first being the H1N1 flu outbreak which fizzled out quickly, despite possibly causing 280,000 deaths globally. During the H1N1 outbreak, WHO declared a PHEIC in April 2009 and then a pandemic in June, only to rescind both in August as the outbreak was judged to have transitioned to behave like a seasonal flu.

WHO was criticized afterwards for prematurely declaring a PHEIC and overreacting. This then may have impacted the delay in declaring the Ebola outbreak in West Africa as a PHEIC in 2014, long after it became a major crisis. WHO’s former legal counsel has suggested the PHEIC — and other aspects of the IHR framework — may not be effective in stimulating appropriate actions by governments and needs to be reconsidered.

When the time is right to evaluate lessons about the response, it might be appropriate to consider the relative effectiveness of the PHEIC and pandemic announcements and their optimal timing in stimulating appropriate action by governments. The effectiveness of lockdowns in reducing the overall death toll also needs investigation.




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Algeria’s Perfect Storm: COVID-19 and Its Fallout

6 May 2020

Adel Hamaizia

Associate Fellow, Middle East and North Africa Programme

Yahia H. Zoubir

Senior Professor of International Studies, KEDGE Business School; Visiting Fellow, Brookings Doha Center
Coronavirus is a godsend for Algeria’s government to introduce restrictive measures beyond those needed to contain COVID-19. But its new leaders are missing a chance to gain legitimacy, which will offset the socio-economic fallout of the drop in oil prices.

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Algerian volunteers prepare personal protection equipment (PPE) to help combat the coronavirus epidemic in the capital Algiers. Photo by RYAD KRAMDI/AFP via Getty Images.

Although protests successfully ended Abdelaziz Bouteflika’s 20-year sultanistic rule a little over one year ago, demands have been continuing to dismantle the system, get rid of the old personnel, and institute democracy.

The controversial election in December of Abdelmadjid Tebboune — who has inherited a disastrous situation — has not tempered the determination of the Hirak protest movement. As a former minister and prime minister under Bouteflika, the new president has won little legitimacy, and protests have continued.

Now COVID-19 is worsening already dire economic conditions, such as a sharp drop in oil prices. By the beginning of May, statistics showed 10% of confirmed cases have ended in fatality, the highest percentage in the region.

Maintaining an authoritarian style

Hirak had already called for the suspension of the marches — mobilising online instead — before the government’s measures, which include curfews and lockdowns, demonstrating a high sense of duty. But instead of appeasing Hirak’s demands, the government has maintained the authoritarian style of its predecessors.

Tebboune released more than 5,000 prisoners on March 31 but kept prisoners of conscience and leaders of the hirak imprisoned, then subsequently imprisoned journalists and activists. It even passed a controversial penal law, that also covers fake news, and may be used to justify actions against journalists.

The regime wishes to see an end to the Hirak, and rejects accusations of totalitarianism by insisting freedom and a democratic climate exist in Algeria.

Tebboune’s actions contradict his praise for the ‘blessed’ hirak and his promises of instituting the rule of law. In proclaiming the measures, the government has shown disappointing leadership, acting in an authoritarian fashion.

Tebboune also declared proudly that Algeria was fully prepared to fight the coronavirus epidemic, an optimistic claim given the country has only 400 intensive care unit (ICU) beds, or one per 100,000 people. Despite hundreds of billions of hydrocarbon dollars accumulating during the Bouteflika-era, Algeria’s health system ranks 173 out of 195 countries.

Algerians often refer to hospitals as ‘mouroirs’, meaning ‘places for the dying’. Not only has the state failed to build modern hospitals but basic hygienic conditions are lacking, and government officials prefer being treated overseas. A 2014 project to build five university hospitals was abandoned, leaving the health sector in deplorable shape.

Before Chinese assistance arrived, the glaring lack of equipment to protect caregivers and care for the sick was evident. Prime Minister Abdelaziz Djerad admitted the health system required a ‘total overhaul’. The president recently stated Algeria’s doctors are among the 'best in the world' but didn't address why almost 15,000 Algerian doctors practice in France.

Strict containment measures are in sync with most countries but implementation is challenging when most people live in overcrowded urban dwellings (the average household consists of 5.9 members).

Water shortages in many areas makes good hygiene and decontamination impossible, while schools and universities find online teaching difficult when many students do not possess laptops or internet connections. And only 20% of Algerians have debit cards in a cash-dominated economy because of low trust in the public-dominated banking sector, making online shopping capability low.

An already declining macroeconomic situation is worsening due to COVID-19. The IMF revised its 2020 estimates for Algeria, forecasting a catastrophic contraction of -5.2% in a country where hydrocarbons account for 93% of export revenues and 60% of its budget.

Foreign currency reserves are now an estimated $55 billion (expected to fall to $44billion by the end of 2020), down from $200 billion in 2014, and Algerian crude has recently traded close to production costs, with the fiscal breakeven oil price at $157.

In line with its historic aversion to external borrowing, Tebboune recently ruled out seeking financial support from the ‘IMF or other foreign banks’, as he argued such borrowing undermines sovereign foreign policy because - when indebted - ‘we cannot talk about either Palestine or Western Sahara’, two causes dear to Algeria. ‘Friendly countries’ - most likely a reference to China - are said to have offered to grant loans which have been declined for now.

The government is forecasted to face a 20% budget shortfall this year, but Algeria’s fiscal response to COVID-19 is actually the largest among the regional hydrocarbon exporters at an estimated 8% of GDP, compared to an average of 3.2%. However, the government revised downwards its 2020 public spending by 50% (a second cut in a month, from an initial 30% reduction), halting state projects and slashing its $41 billion import bill by 25% while expanding agricultural production. National oil company SONATRACH will also cut planned investment by half to $7 billion but plans have been revealed to develop other natural resources including gold, uranium and phosphates.

But recent growth rates are insufficient to create jobs for those entering the labour market. Despite government attempts to support a rather anaemic ‘formal’ private sector, estimates are 700,000 jobs could be lost due to potential bankruptcies from reduced activity and a loss of markets abroad.

Facing potential social unrest and the quasi-preservation of a tired social contract, the government has committed to upholding public sector wages - including for 50% of the civil servants told to stay home - protecting sacrosanct, unsustainable subsidies, and increasing health expenditure to strengthen the capacity to combat COVID-19.

A supplementary finance law will include various measures that support businesses and the economic fallout. However, while the government is to be commended for its efforts to aid businesses, supporting large swathes of the population is challenging as approximately 50% of the workforce operate in the informal economy.

Weak administrative capacity and insufficient data to implement cash transfers makes the planned ‘solidarity allowance’ of 10,000 dinars ($80) for Ramadan difficult to allocate to those who most need it (especially those in the informal sector). Families, communities, and religious organisations continue to be a social safety net.

So COVID-19 has not created new problems, it has merely magnified and exacerbated the numerous inequalities and failures of the Bouteflika regime to sufficiently invest in human security (economic, food, health environmental, personal, community, and political). Typically, whenever oil prices and related earnings dwindle, the political system promises to reform and diversify the economy. Tebboune is repeating this same old tune.

There are positive elements, such as the government’s realization it must initiate genuine reforms. And local enterprises have been successfully producing artificial respirators, surgical masks, and other materials. Algerians, including the Hirak, are showing great social solidarity.

But the government must capitalize on these positive actions by introducing real change. Because, if not, Hirak will certainly be back in force once the crisis is over, and operating in an environment of worsening socioeconomic problems. The medicine of the past will not work.




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Metabolic profiling in colorectal cancer reveals signature metabolic shifts during tumorigenesis [13. Other]

Colorectal cancer (CRC) arises as the consequence of progressive changes from normal epithelial cells through polyp to tumor, and thus is an useful model for studying metabolic shift. In the present study, we studied the metabolomic profiles using high analyte specific gas chromatography/mass spectrometry (GC/MS) and liquid chromatography tandem mass spectrometry (LC/MS/MS) to attain a systems-level view of the shift in metabolism in cells progressing along the path to CRC. Colonic tissues including tumor, polyps and adjacent matched normal mucosa from 26 patients with sporadic CRC from freshly isolated resections were used for this study. The metabolic profiles were obtained using GC/MS and LC/MS/MS. Our data suggest there was a distinct profile change of a wide range of metabolites from mucosa to tumor tissues. Various amino acids and lipids in the polyps and tumors were elevated, suggesting higher energy needs for increased cellular proliferation. In contrast, significant depletion of glucose and inositol in polyps revealed that glycolysis may be critical in early tumorigenesis. In addition, the accumulation of hypoxanthine and xanthine, and the decrease of uric acid concentration, suggest that the purine biosynthesis pathway could have been substituted by the salvage pathway in CRC. Further, there was a step-wise reduction of deoxycholic acid concentration from mucosa to tumors. It appears that to gain a growth advantage, cancer cells may adopt alternate metabolic pathways in tumorigenesis and this flexibility allows them to adapt and thrive in harsh environment.




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Translating Divergent Environmental Stresses into a Common Proteome Response through Hik33 in a Model Cyanobacterium [Research]

The histidine kinase Hik33 plays important roles in mediating cyanobacterial response to divergent types of abiotic stresses including cold, salt, high light (HL), and osmotic stresses. However, how these functions are regulated by Hik33 remains to be addressed. Using a hik33-deficient strain (hik33) of Synechocystis sp. PCC 6803 (Synechocystis) and quantitative proteomics, we found that Hik33 depletion induces differential protein expression highly similar to that induced by divergent types of stresses. This typically includes downregulation of proteins in photosynthesis and carbon assimilation that are necessary for cell propagation, and upregulation of heat shock proteins, chaperons, and proteases that are important for cell survival. This observation indicates that depletion of Hik33 alone mimics divergent types of abiotic stresses, and that Hik33 could be important for preventing abnormal stress response in the normal condition. Moreover, we found the majority of proteins of plasmid origin were significantly upregulated in hik33, though their biological significance remains to be addressed. Together, the systematically characterized Hik33-regulated cyanobacterial proteome, which is largely involved in stress responses, builds the molecular basis for Hik33 as a general regulator of stress responses.




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Immediate adaptation analysis implicates BCL6 as an EGFR-TKI combination therapy target in NSCLC [Research]

Drug resistance is a major obstacle to curative cancer therapies, and increased understanding of the molecular events contributing to resistance would enable better prediction of therapy response, as well as contribute to new targets for combination therapy. Here we have analyzed the early molecular response to epidermal growth factor receptor (EGFR) inhibition using RNA sequencing data covering 13 486 genes and mass spectrometry data covering 10 138 proteins. This analysis revealed a massive response to EGFR inhibition already within the first 24 hours, including significant regulation of hundreds of genes known to control downstream signaling, such as transcription factors, kinases, phosphatases and ubiquitin E3-ligases. Importantly, this response included upregulation of key genes in multiple oncogenic signaling pathways that promote proliferation and survival, such as ERBB3, FGFR2, JAK3 and BCL6, indicating an early adaptive response to EGFR inhibition. Using a library of more than 500 approved and experimental compounds in a combination therapy screen, we could show that several kinase inhibitors with targets including JAK3 and FGFR2 increased the response to EGFR inhibitors. Further, we investigated the functional impact of BCL6 upregulation in response to EGFR inhibition using siRNA-based silencing of BCL6. Proteomics profiling revealed that BCL6 inhibited transcription of multiple target genes including p53, resulting in reduced apoptosis which implicates BCL6 upregulation as a new EGFR inhibitor treatment escape mechanism. Finally, we demonstrate that combined treatment targeting both EGFR and BCL6 act synergistically in killing lung cancer cells. In conclusion, or data indicates that multiple different adaptive mechanisms may act in concert to blunt the cellular impact of EGFR inhibition, and we suggest BCL6 as a potential target for EGFR inhibitor-based combination therapy.




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Investigation of inter- and intra-tumoral heterogeneity of glioblastoma using TOF-SIMS [Research]

Glioblastoma (GBM) is one of the most aggressive human cancers with a median survival of less than two years. A distinguishing pathological feature of GBM is a high degree of inter- and intratumoral heterogeneity. Intertumoral heterogeneity of GBM has been extensively investigated on genomic, methylomic, transcriptomic, proteomic and metabolomics levels, however only a few studies describe intratumoral heterogeneity due to the lack of methods allowing to analyze GBM samples with high spatial resolution. Here, we applied TOF-SIMS (Time-of-flight secondary ion mass spectrometry) for the analysis of single cells and clinical samples such as paraffin and frozen tumor sections obtained from 57 patients. We developed a technique that allows us to simultaneously detect the distribution of proteins and metabolites in glioma tissue with 800 nm spatial resolution. Our results demonstrate that according to TOF-SIMS data glioma samples can be subdivided into clinically relevant groups and distinguished from the normal brain tissue. In addition, TOF-SIMS was able to elucidate differences between morphologically distinct regions of GBM within the same tumor. By staining GBM sections with gold-conjugated antibodies against Caveolin-1 we could visualize border between zones of necrotic and cellular tumor and subdivide glioma samples into groups characterized by different survival of the patients. Finally, we demonstrated that GBM contains cells that are characterized by high levels of Caveolin-1 protein and cholesterol. This population may partly represent a glioma stem cells. Collectively, our results show that the technique described here allows to analyze glioma tissues with a spatial resolution beyond reach of most of other omics approaches and the obtained data may be used to predict clinical behavior of the tumor.




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Perlecan knockdown significantly alters extracellular matrix composition and organization during cartilage development [Research]

Perlecan is a critical proteoglycan found in the extracellular matrix (ECM) of cartilage. In healthy cartilage, perlecan regulates cartilage biomechanics and we previously demonstrated perlecan deficiency leads to reduced cellular and ECM stiffness in vivo. This change in mechanics may lead to the early onset osteoarthritis seen in disorders resulting from perlecan knockdown such as Schwartz-Jampel syndrome (SJS). To identify how perlecan knockdown affects the material properties of developing cartilage, we used imaging and liquid chromatography–tandem mass spectrometry (LC-MS/MS) to study the ECM in a murine model of SJS, Hspg2C1532Y-Neo. Perlecan knockdown led to defective pericellular matrix formation, whereas the abundance of bulk ECM proteins, including many collagens, increased. Post-translational modifications and ultrastructure of collagens were not significantly different; however, LC-MS/MS analysis showed more protein was secreted by Hspg2C1532Y-Neo cartilage in vitro, suggesting that the incorporation of newly synthesized ECM was impaired. In addition, glycosaminoglycan deposition was atypical, which may explain the previously observed decrease in mechanics. Overall, these findings provide insight into the influence of perlecan on functional cartilage assembly and the progression of osteoarthritis in SJS.




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Algeria: Tired of Waiting

1 January 2008 , Number 10

At the beginning of December, media reports put the violence which had plagued Algeria since the 1990s at an all time low. Only six people had been killed in November and four of those were armed Islamist militants. Then on December 11, two car bombs exploded in the capital Algiers, killing some 67 people, including at least eleven United Nations officials in the largely destroyed offices of the UN’s High Commission for Refugees. What lies beneath this return to high-level, targeted attacks?

Claire Spencer

Head, Middle East Programme, Chatham House

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Algerian policemen and bomb experts in front of the destroyed building of the Supreme Court, Algiers. One explosion targeted the offices of the UN refugee agency in Algiers, while the other bomb was triggered near the Algerian Supreme Court building.




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Russia and Georgia: A Dangerous Game

1 October 2008 , Number 3

Dilemmas and dangers abound for the west as it tries to come to terms with the ‘new’ Russia. There is a mood of defiance and injury, which can only be answered with firmness and prudence.

James Sherr

Head, Russia and Eurasia Programme, Chatham House




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Ghana: Following the Gentle Giant

1 November 2008 , Number 8

Ghana’s President John Kufuor has successfully promoted his country as a haven of political and economic stability, but as he comes to the end of his two terms in office, the cracks are beginning to appear. Can Ghana escape the election traumas that have been so destructive in Kenya and Zimbabwe?

Sola Tayo

Associate Fellow, Africa Programme




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Climate Change: Avoiding Climate Crunch

1 November 2008 , Number 6

A new climate is likely at the United Nations climate change conference in Poland early this month and not just because of the election of Barack Obama as President of the United States. The international financial crisis has highlighted the cost of poor policies and the scale of banking bailouts has made dealing with climate change seem less formidable. Besides, such schemes could create new jobs and give an edge to the competitive economies of tomorrow.

Bernice Lee OBE

Research Director; Executive Director, Hoffmann Centre for Sustainable Resource Economy




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Nigerian Elections: Big Men and Ballot Boxes

1 March 2007 , Number 6

The minister paused, leaned forward and fiddled with his cufflinks, ‘It wasn’t about whether the election was rigged or not,’ he said. ‘The truth is, everybody rigged it. We just rigged it better than them.’ Does the next Nigerian presidential election in April promise anything different?

Sola Tayo

Journalist, HARDtalk, BBC News

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Supporters of the ruling Peoples Democratic Party wave banners and posters




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Renewable Energy: Generating Money

1 November 2007 , Number 7

City types are waking up to wind, waves and the sun and their potential to make energy – and money. This is just as new energy policies for Europe emerge with twenty percent targets for renewable energy and greenhouse gas cuts. Add to the mix climate change negotiations which will be back in Bali in December.

Kirsty Hamilton

Associate Fellow, Energy, Environment and Resources Programme

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Solar panels lined up




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Politics, policy-making and the presence of images of suffering children

7 May 2020 , Volume 96, Number 3

Helen Berents

In 2017 Trump expressed pity for the ‘beautiful babies’ killed in a gas attack on Khan Shaykhun in Syria before launching airstrikes against President Assad's regime. Images of suffering children in world politics are often used as a synecdoche for a broader conflict or disaster. Injured, suffering, or dead; the ways in which images of children circulate in global public discourse must be critically examined to uncover the assumptions that operate in these environments. This article explores reactions to images of children by representatives and leaders of states to trace the interconnected affective and political dimensions of these images. In contrast to attending to the expected empathetic responses prompted by images of children, this article particularly focuses on when such images prompt bellicose foreign policy decision-making. In doing this, the article forwards a way of thinking about images as contentious affective objects in international relations. The ways in which images of children's bodies and suffering are strategically deployed by politicians deserves closer scrutiny to uncover the visual politics of childhood inherent in these moments of international politics and policy-making.




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How images frame China's role in African development

7 May 2020 , Volume 96, Number 3

George Karavas

Political leaders, policy-makers and academics routinely refer to development as an objective process of social change through the use of technical, value-free terms. Images of poverty and inequality are regularly presented as evidence of a world that exists ‘out there’ where development unfolds. This way of seeing reflects the value of scientific forms of knowledge but also sits in tension with the normative foundations of development that take European modernization and industrialization as the benchmark for comparison. The role images play in this process is often overlooked. This article argues that a dominant mode of visuality based on a Cartesian separation between subject and object, underpinning the ascendance of European hegemony and colonialism, aligns with the core premises of orthodox development discourse. An example of how visual representations of development matter is presented through images of Africa–China relations in western media sources. Using widely circulated images depicting China's impact on African development in western news media sources as an example of why visual politics matters for policy-making, the article examines how images play a role in legitimizing development planning by rendering associated forms of epistemological and structural violence ‘invisible to the viewer’.




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Rethinking youth bulge theory in policy and scholarship: incorporating critical gender analysis

7 May 2020 , Volume 96, Number 3

Lesley Pruitt

For decades ‘youth bulge’ theory has dominated understandings of youth in mainstream International Relations. Youth bulge theory has also become part of some public media analyses, mainstream political rhetoric, and even officially enshrined in the foreign policy of some states. Through the ‘youth bulge’ lens, youth—especially males—have been presented as current or future perpetrators of violence. However, this article argues that the youth bulge thesis postulated in mainstream IR is based on flawed theoretical assumptions. In particular, supporters of youth bulge theory fail to engage with existing research by feminist IR scholars and thus take on a biological essentialist approach. This has led to theoretical and practical misunderstandings of the roles youth play in relation to conflict, peace and security. These partial and biased understandings have also resulted in less effective policy-making. In critically reflecting on the ‘youth bulge’ thesis, this article argues that applying gender analysis is crucial to understanding the involvement of young people in general—and young men in particular—in conflict. Doing so will contribute to advancing more accurate analysis in scholarship and policy-making.




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The New Orthodox Church of Ukraine: Opportunities and Challenges of Canonical Independence

Invitation Only Research Event

22 January 2020 - 10:00am to 11:30am

Chatham House | 10 St James's Square | London | SW1Y 4LE

Event participants

Archbishop Yevstraty (Zoria) of Chernihiv, Deputy Head of Department for External Church Relations, Ukrainian Orthodox Church (Orthodox Church of Ukraine)

In January 2019, the Ecumenical Patriarchate of Constantinople granted the Orthodox Church of Ukraine a self-governing status, ending its centuries-long subordination to the Moscow Patriarchate. The Russian Orthodox Church condemned this decision and severed its links with the Constantinople Patriarchate.

More than 500 parishes have left the Ukrainian Orthodox Church of the Moscow Patriarchate to join the newly independent Ukrainian Orthodox Church (UOC).

What challenges is the new church facing? Has its independence been recognized by other Orthodox churches? How is it affected by the schism between Constantinople and Moscow? What are UOC’s priorities in relations with the West and with the Orthodox world?

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274




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Secrets and Spies: UK Intelligence Accountability After Iraq and Snowden

20 January 2020

How can democratic governments hold intelligence and security agencies to account when what they do is largely secret? Jamie Gaskarth explores how intelligence professionals view accountability in the context of 21st century politics. 

Jamie Gaskarth

Senior Lecturer, University of Birmingham

Using the UK as a case study, this book provides the first systematic exploration of how accountability is understood inside the secret world. It is based on new interviews with current and former UK intelligence practitioners, as well as extensive research into the performance and scrutiny of the UK intelligence machinery.

The result is the first detailed analysis of how intelligence professionals view their role, what they feel keeps them honest, and how far external overseers impact on their work.

The UK gathers material that helps inform global decisions on such issues as nuclear proliferation, terrorism, transnational crime, and breaches of international humanitarian law. On the flip side, the UK was a major contributor to the intelligence failures leading to the Iraq war in 2003, and its agencies were complicit in the widely discredited U.S. practices of torture and 'rendition' of terrorism suspects. UK agencies have come under greater scrutiny since those actions, but it is clear that problems remain.

Secrets and Spies is the result of a British Academy funded project (SG151249) on intelligence accountability.

Open society is increasingly defended by secret means. For this reason, oversight has never been more important. This book offers a new exploration of the widening world of accountability for UK intelligence, encompassing informal as well as informal mechanisms. It substantiates its claims well, drawing on an impressive range of interviews with senior figures. This excellent book offers both new information and fresh interpretations. It will have a major impact.

Richard Aldrich, Professor of International Security, University of Warwick, UK

Gaskarth’s novel approach, interpreting interviews with senior figures from the intelligence world, brings fresh insight on a significant yet contested topic. He offers an impressively holistic account of intelligence accountability—both formal and informal—and, most interestingly of all, of how those involved understand it. This is essential reading for those wanting to know what accountability means and how it is enacted.

Rory Cormac, Professor of International Relations, University of Nottingham

About the author

Jamie Gaskarth is senior lecturer at the University of Birmingham, where he teaches strategy and decision-making. His research looks at the ethical dilemmas of leadership and accountability in intelligence, foreign policy, and defence. He is author/editor or co-editor of six books and served on the Academic Advisory panel for the 2015 UK National Security Strategy and Strategic Defence and Security Review.

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Department/project




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Three Challenges for UK Peacebuilding Policy in the South Caucasus After Brexit

21 January 2020

Laurence Broers

Associate Fellow, Russia and Eurasia Programme
Building on the legacies of a long-term British investment in a peace strategy for the South Caucasus is a realistic and attainable goal.

2020-01-21-NK.jpg

A building in Nagorny Karabakh flies the flag of the self-proclaimed republic. 'Abkhazia, South Ossetia and Nagorny Karabakh have evolved into examples of what scholars call "de facto states" that, to differing degrees, control territory, provide governance and exercise internal sovereignty,' writes Laurence Broers. Photo: Getty Images.

What does Britain’s departure from the EU mean for the country’s policy towards the South Caucasus, a small region on the periphery of Europe, fractured by conflict? Although Britain is not directly involved in any of the region’s peace processes (except in the case of the Geneva International Discussions on conflicts involving Georgia, as an EU member state), it has been a significant stakeholder in South Caucasian stability since the mid-1990s.

Most obviously, Britain has been the single largest foreign investor in Caspian oil and gas. Yet beyond pipelines, Britain also has been a significant investor in long-term civil society-led strategies to build peace in the South Caucasus.

Through what was then the Global Conflict Prevention Pool, in the early 2000s the Department for International Development (DfID) pioneered large-scale peacebuilding interventions, such as the Consortium Initiative, addressing Armenian-Azerbaijani conflict, in 2003-09. These built civic networks in the South Caucasus and partnerships with British-based NGOs.

This experience left a strong intellectual legacy. British expertise on the South Caucasus, including specific expertise on its conflicts, is highly regarded in the region and across the world.

There is also a strong tradition of British scholarship on the Caucasus, and several British universities offer Caucasus-related courses. Through schemes such as the John Smith Fellowship Trust, the Robert Bosch Stiftung Academy Fellowship at Chatham House and Chevening Scholarships, significant numbers of young leaders from the South Caucasus have spent time in British institutions and built effective relationships within them.

Three challenges

This niche as a champion of long-term, strategic peacebuilding and repository of area-specific knowledge should not be lost as Britain’s relationship with the EU and regional actors evolves. This can be ensured through awareness of three challenges confronting a post-Brexit Caucasus policy.

The first challenge for London is to avoid framing a regional policy in the South Caucasus as an extension of a wider ‘Russia policy’. Deteriorating Russian-British relations in recent years strengthen a tendency to view policies in the European neighbourhood through the traditional prisms of Cold War and Russian-Western rivalries.

Yet an overwhelming focus on Russia fails to capture other important aspects of political developments in South Caucasus conflicts. Although often referred to as ‘breakaway’ or ‘occupied’ territories, Abkhazia, South Ossetia and Nagorny Karabakh are not ungoverned spaces. They have evolved into examples of what scholars call ‘de facto states’ that, to differing degrees, control territory, provide governance and exercise internal sovereignty.

Few disagree that these entities would not survive without external patronage. But neither does that patronage explain their sustainability on its own. Russia-centricity diminishes Britain’s latitude to engage on the full range of local drivers sustaining these entities, contributing instead to less effective policies predicated on competition and containment.

A second and related challenge is to maintain and develop Britain’s position on the issue of engaging populations in these entities. De facto states appear to stand outside of the international rules-based system. Yet in many cases, their civil societies are peopled by skilled and motivated activists who want their leaders to be held accountable according to international rules.

Strategies of isolation ignore these voices and contribute instead to fearful and demoralized communities less likely to engage in a transformation of adversarial relationships. Making this case with the wider international community, and facilitating the funding of local civil societies in contested territories, would be important steps in sustaining an effective British policy on the resolution of conflicts.    

The third challenge for Britain is to maintain a long-term approach to the conflicts of the South Caucasus alongside potential short-term imperatives in other policy fields, as relationships shift post-Brexit.

In this fluid international environment, the Foreign and Commonwealth Office has a role to play both as an internal champion of a long-term peacebuilding strategy and a coordinator of British efforts with those of multilateral actors engaged in the South Caucasus. These include the United Nations, the EU’s Special Representative for the South Caucasus and the Crisis in Georgia and OSCE’s Special Representative for the OSCE Chairperson-in-Office for the South Caucasus, all of which have built relationships with relevant actors on the ground.

Recommendations

Britain’s niche as a champion and advocate of a strategic approach to peaceful change can be secured post-Brexit in the following ways.  

First, in-house expertise is crucial to effective peacebuilding programming. The Foreign Office’s research analysts play a vital role in generating independent internal advice and liaising with academic and NGO communities. Their role could be supplemented by the reinstatement of a regional conflict adviser post, based in Tbilisi, tasked with strengthening Britain’s regional presence on conflict issues and coordinating policy at a regional level.

This post, with a remit to cover conflicts and build up area knowledge and relationships can contribute significantly to working closely with local civil societies, where so much expertise and knowledge resides, as well as other stakeholders.

Second, programming should build in conflict sensitivity by dissociating eligibility from contested political status. This can encourage local populations to take advantage of opportunities for funding, study, comparative learning and professional development irrespective of the status of the entity where they reside.

The Chevening Scholarships are an excellent example, whereby applicants can select ‘South Caucasus’ as their affiliated identity from a drop-down menu. This enables citizens from across the region to apply irrespective of the status of the territory in which they live.   

Finally, a holistic understanding of peace is crucial. Programming in unrecognized or partially-recognized entities should acknowledge that effective peacebuilding needs to embrace political dynamics and processes beyond cross-conflict contact and confidence building. Local actors in such entities may find peacebuilding funding streams defined exclusively in terms of cross-conflict contact more politically risky and ineffective in addressing domestic blockages to peace.

While cross-conflict dynamics remain critical, ‘single-community’ programming framed in terms of civic participation, inclusion, civil society capacity-building, minority and human rights in contested territories, and building the confidence from within to engage in constructive dialogue, are no less important.

The ’global Britain’ promised by Brexit remains a fanciful idea. Quiet, painstaking work to build on the legacies of a long-term British investment in a peace strategy for the South Caucasus, on the other hand, is a realistic and attainable goal.




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Crimea’s Occupation Exemplifies the Threat of Attacks on Cultural Heritage

4 February 2020

Kateryna Busol

Robert Bosch Stiftung Academy Fellow, Russia and Eurasia Programme
Societies, courts and policymakers should have a clearer awareness that assaults against cultural heritage constitute a creeping encroachment on a people’s identity, endangering its very survival.

2020-02-04-Bakhchysarai.jpg

'The destructive reconstruction of the 16th-century Bakhchysarai Palace is being conducted by a team with no experience of cultural sites, in a manner that erodes its authenticity and historical value.' Photo: Getty Images.

Violations against cultural property – such as archaeological treasures, artworks, museums or historical sites – can be no less detrimental to the survival of a nation than the physical persecution of its people. These assaults on heritage ensure the hegemony of some nations and distort the imprint of other nations in world history, sometimes to the point of eradication.

As contemporary armed conflicts in Syria, Ukraine and Yemen demonstrate, cultural property violations are not only a matter of the colonial past; they continue to be perpetrated, often in new, intricate ways.

Understandably, from a moral perspective, it is more often the suffering of persons, rather than any kind of ‘cultural’ destruction, that receives the most attention from humanitarian aid providers, the media or the courts. Indeed, the extent of the damage caused by an assault on cultural property is not always immediately evident, but the result can be a threat to the survival of a people. This is strikingly exemplified by what is currently happening in Crimea.

Ukraine’s Crimean peninsula has been occupied by Russia since February 2014, meaning that, under international law, the two states have been involved in an international armed conflict for the last six years.

While much attention has been paid to the alleged war crimes perpetrated by the occupying power, reports by international organizations and the International Criminal Court (ICC) have been less vocal on the issue of cultural property in Crimea. Where they do raise it, they tend to confine their findings to the issue of misappropriation.

However, as part of its larger policy of the annexation and Russification of the peninsula and its history, Russia has gone far beyond misappropriation.

Crimean artefacts have been transferred to Russia – without security justification or Ukrainian authorization as required by the international law of occupation – to be showcased at exhibitions celebrating Russia’s own cultural heritage. In 2016, the Tretyakov Gallery in Moscow staged its record-breaking Aivazovsky exhibition, which included 38 artworks from the Aivazovsky Museum in the Crimean town of Feodosia.

Other ‘cultural’ violations in the region include numerous unsanctioned archaeological excavations, whose findings are often unlawfully exported to Russia or end up on the black market.

There is also the example of Russia’s plan to establish a museum of Christianity in Ukraine’s UNESCO World Heritage site, the Ancient City of Tauric Chersonese. This is an indication of Russia’s policy of asserting itself as a bastion of Orthodox Christianity and culture in the Slavic world, with Crimea as one of the centres.

The harmful effects of Russia’s destructive cultural property policy can be seen in the situation of the Crimean Tatars, Ukraine’s indigenous Muslim people. Already depleted by a Stalin-ordered deportation in 1944 and previously repressed by the Russian Empire, the Crimean Tatars are now facing the destruction of much of the remainder of their heritage.

For example, Muslim burial grounds have been demolished to build the Tavrida Highway, which leads to the newly built Kerch Bridge connecting the peninsula to Russia.

The destructive reconstruction of the 16th-century Bakhchysarai Palace – the only remaining complete architectural ensemble of the indigenous people, included in the UNESCO World Heritage Tentative List – is another example of how the very identity of the Crimean Tatars is being threatened. This reconstruction is being conducted by a team with no experience of cultural sites, in a manner that erodes its authenticity and historical value – which is precisely as Russia intends.

There is a solid body of international and domestic law covering Russia’s treatment of Crimea’s cultural property.

Under the 1954 Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict – ratified by both Ukraine and Russia – the occupying power must facilitate the safeguarding efforts of the national authorities in occupied territories. States parties must prevent any vandalism or misappropriation of cultural property, and, according to the first protocol of the convention, the occupying power is required to prevent any export of artefacts from the occupied territory.

The 1907 Hague Regulations and the 1949 Fourth Geneva Convention confirm that the authentic domestic legislation continues to apply in occupied territories. This leaves Russia with no excuse for non-compliance with Ukraine’s cultural property laws and imposing its own rules unless absolutely necessary.

Besides, both Ukrainian and Russian criminal codes penalise pillage in occupied territory, as well as unsanctioned archaeological excavations. As an occupying power, Russia must not just abstain from such wrongdoings in Crimea, but also duly investigate and prosecute the alleged misconduct.

The clarity of the international legal situation demonstrates that no exhibitions in continental Russia and no archaeological excavations which are not sanctioned by Ukraine can be justified. Likewise, any renovation or use of cultural sites, especially those on permanent or tentative UNESCO lists, must only be conducted pursuant to consultancy with and approval of the Ukrainian authorities.

But the resonance of the Crimean case goes beyond law and touches on issues of the very survival of a people. The Soviet deportation of the Crimean Tatars in 1944 did not only result in the deaths of individuals. Their footprints in Crimea have been gradually erased by baseless treason charges, the long exile of the indigenous community from their native lands and ongoing persecution.

First the Soviet Union and now Russia have targeted the Crimean Tatars’ cultural heritage to undermine their significance in the general historical narrative, making attempts to preserve or celebrate this culture seem futile. Russia is thus imposing its own historical and political hegemony at the expense of the Crimean Tatar and Ukrainian layers of Crimean history.

As exemplified by occupied Crimea, the manipulation and exploitation of cultural heritage can serve an occupying power’s wider policies of appropriating history and asserting its own dominance. Domestic cultural property proceedings are challenging due to the lack of access to the occupied territory, but they should still be pursued.

More effort is needed in the following areas: case prioritization; informing the documenters of alleged violations about the spectrum of cultural property crimes; developing domestic investigative and prosecutorial capacity, including by involving foreign expert consultancy; more proactively seeking bilateral and multilateral cooperation in art crime cases; liaising with auction houses (to track down objects originating from war-affected areas) and museums (to prevent the exhibition of the artefacts from occupied territories).

When possible, cultural property crimes should also be reported to the ICC.

Additionally, more international – public, policy, media and jurisprudential – attention to such violations is needed. Societies, courts and policymakers should have a clearer awareness that assaults against cultural heritage constitute a creeping encroachment on a people’s identity, endangering its very survival.




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Analysing the Recent Changes in Russia

Invitation Only Research Event

17 February 2020 - 10:30am to 12:00pm

Chatham House | 10 St James's Square | London | SW1Y 4LE

Event participants

Leonid Gozman, President, Perspective Foundation

The scale of the changes in Russia’s political system is yet to be fully understood, as new suggestions for revising the constitution appear almost daily. This event will discuss the risks of President Putin’s 15 January announcement, and what strategies Russia’s non-systemic opposition might now deploy in response.

Event attributes

Chatham House Rule

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274




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Moldova in 2020 and Beyond: Challenges Ahead

Invitation Only Research Event

5 March 2020 - 2:00pm to 3:30pm

Chatham House | 10 St James's Square | London | SW1Y 4LE

Event participants

Maia Sandu, President, Action and Solidarity Party; Prime Minister of Moldova (June-November 2019)
Chair: Cristina Gherasimov, Research Fellow, German Council on Foreign Relations; Academy Associate, Russia and Eurasia Programme, Chatham House
 

After a tumultuous 2019 when Moldova witnessed the end of the Plahotniuc era, the country seems bound for an equally difficult year ahead.
 
Increasing international isolation, a temporary working coalition between the Socialists and the Democrats, concentration of power and resources in the hands of President Igor Dodon, and presidential elections in autumn are among the ordeals to be discussed at this event. Ms Sandu will assess how Moldova can move beyond these challenges and return to a path for sustainable democratic reform. 

Department/project

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274




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Webinar: Russian Disinformation's Golden Moment: Challenges and Responses in the COVID-19 Era

Invitation Only Research Event

7 May 2020 - 3:00pm to 4:30pm

Event participants

Anneli Ahonen, Head, StratCom East Task Force, European External Action Service
Keir Giles, Senior Consulting Fellow, Russia and Eurasia Programme, Chatham House
Thomas Kent, Adjunct Associate Professor, Harriman Institute, Columbia University; Senior Fellow, the Jamestown Foundation
Chairs:
James Nixey, Programme Director, Russia and Eurasia, Chatham House
Glen Howard, President, The Jamestown Foundation
The COVID-19 pandemic provides the ideal environment for malign influence to thrive as it feeds on fear and a vacuum of authoritative information. What are the current challenges posed by Russian disinformation, and how should Western nations be responding?
 
In this discussion, jointly hosted by the Jamestown Foundation and the Chatham House Russia and Eurasia Programme, the speakers will consider what best practice looks like in safeguarding Western societies against the pernicious effects of disinformation. 
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274




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Virtual Roundtable: Land Reform in Ukraine: Is Zelenskyy's Government Getting it Right?

Invitation Only Research Event

14 May 2020 - 12:00pm to 1:30pm
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Ihor Petrashko, Minister of Economic Development and Trade, Ukraine
Andriy Dykun, Chair, Ukrainian Agricultural Council
Vadim Tolpeco, Ukrlandfarming Plc
Chair: Orysia Lutsevych, Research Fellow and Manager, Ukraine Forum, Chatham House
Ukraine is known as the ‘breadbasket of Europe’ thanks to its grain exports. On 31 March 2020, the Ukrainian parliament passed a landmark law ending a 19-year ban on the sale of privately owned agricultural land. Due to come into force in July 2021, the law applies to 41.5 million hectares of farmland and economists predict substantial economic gains from this liberalization.
 
This event will discuss the impact of the law on Ukraine’s agricultural sector and food security. How can the government best implement this reform and ensure that small and medium-sized agricultural companies increase their productivity? What does this change mean for Ukraine’s capacity to export grain? Can the country’s food supply withstand crises such as the COVID-19 pandemic? What role could foreign direct investors play in boosting production?
 
This event will be held on the record.

Anna Morgan

Administrator, Ukraine Forum
+44 (0)20 7389 3274




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Metallopeptidase Stp1 activates the transcription factor Sre1 in the carotenogenic yeast Xanthophyllomyces dendrorhous [Research Articles]

Xanthophyllomyces dendrorhous is a basidiomycete yeast known as a natural producer of astaxanthin, a carotenoid of commercial interest because of its antioxidant properties. Recent studies indicated that X. dendrorhous has a functional SREBP pathway involved in the regulation of isoprenoid compound biosynthesis, which includes ergosterol and carotenoids. SREBP is a major regulator of sterol metabolism and homeostasis in mammals; characterization in fungi also provides information about its role in the hypoxia adaptation response and virulence. SREBP protease processing is required to activate SREBP pathway functions in fungi. Here, we identified and described the STP1 gene, which encodes a metallopeptidase of the M50 family involved in the proteolytic activation of the transcription factor Sre1 of the SREBP pathway, in X. dendrorhous. We assessed STP1 function in stp1 strains derived from the wild-type and a mutant of ergosterol biosynthesis that overproduces carotenoids and sterols. Bioinformatic analysis of the deduced protein predicted the presence of characteristic features identified in homologs from mammals and fungi. The stp1 mutation decreased yeast growth in the presence of azole drugs and reduced transcript levels of Sre1-dependent genes. This mutation also negatively affected the carotenoid- and sterol-overproducing phenotype. Western blot analysis demonstrated that Sre1 was activated in the yeast ergosterol biosynthesis mutant and that the stp1 mutation introduced in this strain prevented Sre1 proteolytic activation. Overall, our results demonstrate that STP1 encodes a metallopeptidase involved in proteolytic activation of Sre1 in X. dendrorhous, contributing to our understanding of fungal SREBP pathways.




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Macrophage polarization is linked to Ca2+-independent phospholipase A2{beta}-derived lipids and cross-cell signaling in mice [Research Articles]

Phospholipases A2 (PLA2s) catalyze hydrolysis of the sn-2 substituent from glycerophospholipids to yield a free fatty acid (i.e., arachidonic acid), which can be metabolized to pro- or anti-inflammatory eicosanoids. Macrophages modulate inflammatory responses and are affected by Ca2+-independent phospholipase A2 (PLA2)β (iPLA2β). Here, we assessed the link between iPLA2β-derived lipids (iDLs) and macrophage polarization. Macrophages from WT and KO (iPLA2β–/–) mice were classically M1 pro-inflammatory phenotype activated or alternatively M2 anti-inflammatory phenotype activated, and eicosanoid production was determined by ultra-performance LC ESI-MS/MS. As a genotypic control, we performed similar analyses on macrophages from RIP.iPLA2β.Tg mice with selective iPLA2β overexpression in β-cells. Compared with WT, generation of select pro-inflammatory prostaglandins (PGs) was lower in iPLA2β–/–, and that of a specialized pro-resolving lipid mediator (SPM), resolvin D2, was higher; both changes are consistent with the M2 phenotype. Conversely, macrophages from RIP.iPLA2β.Tg mice exhibited an opposite landscape, one associated with the M1 phenotype: namely, increased production of pro-inflammatory eicosanoids (6-keto PGF1α, PGE2, leukotriene B4) and decreased ability to generate resolvin D2. These changes were not linked with secretory PLA2 or cytosolic PLA2α or with leakage of the transgene. Thus, we report previously unidentified links between select iPLA2β-derived eicosanoids, an SPM, and macrophage polarization. Importantly, our findings reveal for the first time that β-cell iPLA2β-derived signaling can predispose macrophage responses. These findings suggest that iDLs play critical roles in macrophage polarization, and we posit that they could be targeted therapeutically to counter inflammation-based disorders.




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Worming our way toward multiple evolutionary origins of convergent sterol pathways [Commentary]




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Nonsynonymous SNPs in LPA homologous to plasminogen deficiency mutants represent novel null apo(a) alleles [Patient-Oriented and Epidemiological Research]

Plasma lipoprotein (a) [Lp(a)] levels are largely determined by variation in the LPA gene, which codes for apo(a). Genome-wide association studies (GWASs) have identified nonsynonymous variants in LPA that associate with low Lp(a) levels, although their effect on apo(a) function is unknown. We investigated two such variants, R990Q and R1771C, which were present in four null Lp(a) individuals, for structural and functional effects. Sequence alignments showed the R990 and R1771 residues to be highly conserved and homologous to each other and to residues associated with plasminogen deficiency. Structural modeling showed both residues to make several polar contacts with neighboring residues that would be ablated on substitution. Recombinant expression of the WT and R1771C apo(a) in liver and kidney cells showed an abundance of an immature form for both apo(a) proteins. A mature form of apo(a) was only seen with the WT protein. Imaging of the recombinant apo(a) proteins in conjunction with markers of the secretory pathway indicated a poor transit of R1771C into the Golgi. Furthermore, the R1771C mutant displayed a glycosylation pattern consistent with ER, but not Golgi, glycosylation. We conclude that R1771 and the equivalent R990 residue facilitate correct folding of the apo(a) kringle structure and mutations at these positions prevent the proper folding required for full maturation and secretion. To our knowledge, this is the first example of nonsynonymous variants in LPA being causative of a null Lp(a) phenotype.




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Exon 9-deleted CETP inhibits full length-CETP synthesis and promotes cellular triglyceride storage [Research Articles]

Cholesteryl ester transfer protein (CETP) exists as full-length (FL) and exon 9 (E9)-deleted isoforms. The function of E9-deleted CETP is poorly understood. Here, we investigated the role of E9-deleted CETP in regulating the secretion of FL-CETP by cells and explored its possible role in intracellular lipid metabolism. CETP overexpression in cells that naturally express CETP confirmed that E9-deleted CETP is not secreted, and showed that cellular FL- and E9-deleted CETP form an isolatable complex. Coexpression of CETP isoforms lowered cellular levels of both proteins and impaired FL-CETP secretion. These effects were due to reduced synthesis of both isoforms; however, the predominate consequence of FL- and E9-deleted CETP coexpression is impaired FL-CETP synthesis. We reported previously that reducing both CETP isoforms or overexpressing FL-CETP impairs cellular triglyceride (TG) storage. To investigate this further, E9-deleted CETP was expressed in SW872 cells that naturally synthesize CETP and in mouse 3T3-L1 cells that do not. E9-deleted CETP overexpression stimulated SW872 triglyceride synthesis and increased stored TG 2-fold. Expression of E9-deleted CETP in mouse 3T3-L1 cells produced a similar lipid phenotype. In vitro, FL-CETP promotes the transfer of TG from ER-enriched membranes to lipid droplets. E9-deleted CETP also promoted this transfer, although less effectively, and it inhibited the transfer driven by FL-CETP. We conclude that FL- and E9-deleted CETP isoforms interact to mutually decrease their intracellular levels and impair FL-CETP secretion by reducing CETP biosynthesis. E9-deleted CETP, like FL-CETP, alters cellular TG metabolism and storage but in a contrary manner.




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Role of pyruvate kinase M2 in oxidized LDL-induced macrophage foam cell formation and inflammation [Research Articles]

Pyruvate kinase M2 (PKM2) links metabolic and inflammatory dysfunction in atherosclerotic coronary artery disease; however, its role in oxidized LDL (Ox-LDL)-induced macrophage foam cell formation and inflammation is unknown and therefore was studied. In recombinant mouse granulocyte-macrophage colony-stimulating factor-differentiated murine bone marrow-derived macrophages, early (1–6 h) Ox-LDL treatment induced PKM2 tyrosine 105 phosphorylation and promotes its nuclear localization. PKM2 regulates aerobic glycolysis and inflammation because PKM2 shRNA or Shikonin abrogated Ox-LDL-induced hypoxia-inducible factor-1α target genes lactate dehydrogenase, glucose transporter member 1, interleukin 1β (IL-1β) mRNA expression, lactate, and secretory IL-1β production. PKM2 inhibition significantly increased Ox-LDL-induced ABCA1 and ABCG1 protein expression and NBD-cholesterol efflux to apoA1 and HDL. PKM2 shRNA significantly inhibited Ox-LDL-induced CD36, FASN protein expression, DiI-Ox-LDL binding and uptake, and cellular total cholesterol, free cholesterol, and cholesteryl ester content. Therefore, PKM2 regulates lipid uptake and efflux. DASA-58, a PKM2 activator, downregulated LXR-α, ABCA1, and ABCG1, and augmented FASN and CD36 protein expression. Peritoneal macrophages showed similar results. Ox-LDL induced PKM2- SREBP-1 interaction and FASN expression in a PKM2-dependent manner. Therefore, this study suggests a role for PKM2 in Ox-LDL-induced aerobic glycolysis, inflammation, and macrophage foam cell formation.




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Serum amyloid A is not incorporated into HDL during HDL biogenesis [Research Articles]

Liver-derived serum amyloid A (SAA) is present in plasma where it is mainly associated with HDL and from which it is cleared more rapidly than are the other major HDL-associated apolipoproteins. Although evidence suggests that lipid-free and HDL-associated forms of SAA have different activities, the pathways by which SAA associates and disassociates with HDL are poorly understood. In this study, we investigated SAA lipidation by hepatocytes and how this lipidation relates to the formation of nascent HDL particles. We also examined hepatocyte-mediated clearance of lipid-free and HDL-associated SAA. We prepared hepatocytes from mice injected with lipopolysaccharide or an SAA-expressing adenoviral vector. Alternatively, we incubated primary hepatocytes from SAA-deficient mice with purified SAA. We analyzed conditioned media to determine the lipidation status of endogenously produced and exogenously added SAA. Examining the migration of lipidated species, we found that SAA is lipidated and forms nascent particles that are distinct from apoA-I-containing particles and that apoA-I lipidation is unaltered when SAA is overexpressed or added to the cells, indicating that SAA is not incorporated into apoA-I-containing HDL during HDL biogenesis. Like apoA-I formation, generation of SAA-containing particles was dependent on ABCA1, but not on scavenger receptor class B type I. Hepatocytes degraded significantly more SAA than apoA-I. Taken together, our results indicate that SAA’s lipidation and metabolism by the liver is independent of apoA-I and that SAA is not incorporated into HDL during HDL biogenesis.




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Erratum: Unequivocal evidence for endogenous geranylgeranoic acid biosynthesized from mevalonate in mammalian cells [Errata]




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Heritability of 596 lipid species and genetic correlation with cardiovascular traits in the Busselton Family Heart Study [Patient-Oriented and Epidemiological Research]

CVD is the leading cause of death worldwide, and genetic investigations into the human lipidome may provide insight into CVD risk. The aim of this study was to estimate the heritability of circulating lipid species and their genetic correlation with CVD traits. Targeted lipidomic profiling was performed on 4,492 participants from the Busselton Family Heart Study to quantify the major fatty acids of 596 lipid species from 33 classes. We estimated narrow-sense heritabilities of lipid species/classes and their genetic correlations with eight CVD traits: BMI, HDL-C, LDL-C, triglycerides, total cholesterol, waist-hip ratio, systolic blood pressure, and diastolic blood pressure. We report heritabilities and genetic correlations of new lipid species/subclasses, including acylcarnitine (AC), ubiquinone, sulfatide, and oxidized cholesteryl esters. Over 99% of lipid species were significantly heritable (h2: 0.06–0.50) and all lipid classes were significantly heritable (h2: 0.14–0.50). The monohexosylceramide and AC classes had the highest median heritabilities (h2 = 0.43). The largest genetic correlation was between clinical triglycerides and total diacylglycerol (rg = 0.88). We observed novel positive genetic correlations between clinical triglycerides and phosphatidylglycerol species (rg: 0.64–0.82), and HDL-C and alkenylphosphatidylcholine species (rg: 0.45–0.74). Overall, 51% of the 4,768 lipid species-CVD trait genetic correlations were statistically significant after correction for multiple comparisons. This is the largest lipidomic study to address the heritability of lipids and their genetic correlation with CVD traits. Future work includes identifying putative causal genetic variants for lipid species and CVD using genome-wide SNP and whole-genome sequencing data.




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Hepatic monoamine oxidase B is involved in endogenous geranylgeranoic acid synthesis in mammalian liver cells [Research Articles]

Geranylgeranoic acid (GGA) originally was identified in some animals and has been developed as an agent for preventing second primary hepatoma. We previously have also identified GGA as an acyclic diterpenoid in some medicinal herbs. Recently, we reported that in human hepatoma-derived HuH-7 cells, GGA is metabolically labeled from 13C-mevalonate. Several cell-free experiments have demonstrated that GGA is synthesized through geranylgeranial by oxygen-dependent oxidation of geranylgeraniol (GGOH), but the exact biochemical events giving rise to GGA in hepatoma cells remain unclear. Monoamine oxidase B (MOAB) has been suggested to be involved in GGOH oxidation. Here, using two human hepatoma cell lines, we investigated whether MAOB contributes to GGA biosynthesis. Using either HuH-7 cell lysates or recombinant human MAOB, we found that: 1) the MAO inhibitor tranylcypromine dose-dependently downregulates endogenous GGA levels in HuH-7 cells; and 2) siRNA-mediated MAOB silencing reduces intracellular GGA levels in HuH-7 and Hep3B cells. Unexpectedly, however, CRISPR/Cas9-generated MAOB-KO human hepatoma Hep3B cells had GGA levels similar to those in MAOB-WT cells. A sensitivity of GGA levels to siRNA-mediated MAOB downregulation was recovered when the MAOB-KO cells were transfected with a MAOB-expression plasmid, suggesting that MAOB is the enzyme primarily responsible for GGOH oxidation and that some other latent metabolic pathways may maintain endogenous GGA levels in the MAOB-KO hepatoma cells. Along with the previous findings, these results provide critical insights into the biological roles of human MAOB and provide evidence that hepatic MAOB is involved in endogenous GGA biosynthesis via GGOH oxidation.




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A novel GPER antagonist protects against the formation of estrogen-induced cholesterol gallstones in female mice [Research Articles]

Many clinical studies and epidemiological investigations have clearly demonstrated that women are twice as likely to develop cholesterol gallstones as men, and oral contraceptives and other estrogen therapies dramatically increase that risk. Further, animal studies have revealed that estrogen promotes cholesterol gallstone formation through the estrogen receptor (ER) α, but not ERβ, pathway. More importantly, some genetic and pathophysiological studies have found that G protein-coupled estrogen receptor (GPER) 1 is a new gallstone gene, Lith18, on chromosome 5 in mice and produces additional lithogenic actions, working independently of ERα, to markedly increase cholelithogenesis in female mice. Based on computational modeling of GPER, a novel series of GPER-selective antagonists were designed, synthesized, and subsequently assessed for their therapeutic effects via calcium mobilization, cAMP, and ERα and ERβ fluorescence polarization binding assays. From this series of compounds, one new compound, 2-cyclohexyl-4-isopropyl-N-(4-methoxybenzyl)aniline (CIMBA), exhibits superior antagonism and selectivity exclusively for GPER. Furthermore, CIMBA reduces the formation of 17β-estradiol-induced gallstones in a dose-dependent manner in ovariectomized mice fed a lithogenic diet for 8 weeks. At 32 μg/day/kg CIMBA, no gallstones are found, even in ovariectomized ERα (–/–) mice treated with 6 μg/day 17β-estradiol and fed the lithogenic diet for 8 weeks. In conclusion, CIMBA treatment protects against the formation of estrogen-induced cholesterol gallstones by inhibiting the GPER signaling pathway in female mice. CIMBA may thus be a new agent for effectively treating cholesterol gallstone disease in women.­




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Lipid rafts as a therapeutic target [Thematic Reviews]

Lipid rafts regulate the initiation of cellular metabolic and signaling pathways by organizing the pathway components in ordered microdomains on the cell surface. Cellular responses regulated by lipid rafts range from physiological to pathological, and the success of a therapeutic approach targeting "pathological" lipid rafts depends on the ability of a remedial agent to recognize them and disrupt pathological lipid rafts without affecting normal raft-dependent cellular functions. In this article, concluding the Thematic Review Series on Biology of Lipid Rafts, we review current experimental therapies targeting pathological lipid rafts, including examples of inflammarafts and clusters of apoptotic signaling molecule-enriched rafts. The corrective approaches include regulation of cholesterol and sphingolipid metabolism and membrane trafficking by using HDL and its mimetics, LXR agonists, ABCA1 overexpression, and cyclodextrins, as well as a more targeted intervention with apoA-I binding protein. Among others, we highlight the design of antagonists that target inflammatory receptors only in their activated form of homo- or heterodimers, when receptor dimerization occurs in pathological lipid rafts. Other therapies aim to promote raft-dependent physiological functions, such as augmenting caveolae-dependent tissue repair. The overview of this highly dynamic field will provide readers with a view on the emerging concept of targeting lipid rafts as a therapeutic strategy.




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Lipid rafts and neurodegeneration: structural and functional roles in physiologic aging and neurodegenerative diseases [Thematic Reviews]

Lipid rafts are small, dynamic membrane areas characterized by the clustering of selected membrane lipids as the result of the spontaneous separation of glycolipids, sphingolipids, and cholesterol in a liquid-ordered phase. The exact dynamics underlying phase separation of membrane lipids in the complex biological membranes are still not fully understood. Nevertheless, alterations in the membrane lipid composition affect the lateral organization of molecules belonging to lipid rafts. Neural lipid rafts are found in brain cells, including neurons, astrocytes, and microglia, and are characterized by a high enrichment of specific lipids depending on the cell type. These lipid rafts seem to organize and determine the function of multiprotein complexes involved in several aspects of signal transduction, thus regulating the homeostasis of the brain. The progressive decline of brain performance along with physiological aging is at least in part associated with alterations in the composition and structure of neural lipid rafts. In addition, neurodegenerative conditions, such as lysosomal storage disorders, multiple sclerosis, and Parkinson’s, Huntington’s, and Alzheimer’s diseases, are frequently characterized by dysregulated lipid metabolism, which in turn affects the structure of lipid rafts. Several events underlying the pathogenesis of these diseases appear to depend on the altered composition of lipid rafts. Thus, the structure and function of lipid rafts play a central role in the pathogenesis of many common neurodegenerative diseases.




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Lipid rafts and pathogens: the art of deception and exploitation [Thematic Reviews]

Lipid rafts, solid regions of the plasma membrane enriched in cholesterol and glycosphingolipids, are essential parts of a cell. Functionally, lipid rafts present a platform that facilitates interaction of cells with the outside world. However, the unique properties of lipid rafts required to fulfill this function at the same time make them susceptible to exploitation by pathogens. Many steps of pathogen interaction with host cells, and sometimes all steps within the entire lifecycle of various pathogens, rely on host lipid rafts. Such steps as binding of pathogens to the host cells, invasion of intracellular parasites into the cell, the intracellular dwelling of parasites, microbial assembly and exit from the host cell, and microbe transfer from one cell to another all involve lipid rafts. Interaction also includes modification of lipid rafts in host cells, inflicted by pathogens from both inside and outside the cell, through contact or remotely, to advance pathogen replication, to utilize cellular resources, and/or to mitigate immune response. Here, we provide a systematic overview of how and why pathogens interact with and exploit host lipid rafts, as well as the consequences of this interaction for the host, locally and systemically, and for the microbe. We also raise the possibility of modulation of lipid rafts as a therapeutic approach against a variety of infectious agents.




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GPIHBP1, a partner protein for lipoprotein lipase, is expressed only in capillary endothelial cells [Images In Lipid Research]