Visual Abstract

Visual Abstract

Wenhe Zhu
Dec 29, 2020; 0:RA120.002353v1-mcp.RA120.002353
Research

Tricia Rowlison
Dec 1, 2020; 19:2090-2103
Research

Ka-Won Kang
Nov 30, 2020; 0:RA120.002169v1-mcp.RA120.002169
Research

The extracellular matrix encompasses a reservoir of bioactive macromolecules that modulates a cornucopia of biological functions. A prominent body of work posits matrix constituents as master regulators of autophagy and angiogenesis and provides molecular insight into how these two processes are coordinated. Here, we review current understanding of the molecular mechanisms underlying hyaluronan and HAS2 regulation and the role of soluble proteoglycan in affecting autophagy and angiogenesis. Specifically, we assess the role of proteoglycan-evoked autophagy in regulating angiogenesis via the HAS2-hyaluronan axis and ATG9A, a novel HAS2 binding partner. We discuss extracellular hyaluronan biology and the post-transcriptional and post-translational modifications that regulate its main synthesizer, HAS2. We highlight the emerging group of proteoglycans that utilize outside-in signaling to modulate autophagy and angiogenesis in cancer microenvironments and thoroughly review the most up-to-date understanding of endorepellin signaling in vascular endothelia, providing insight into the temporal complexities involved.

In Alzheimer's disease (AD), tau, a microtubule-associated protein (MAP), becomes hyperphosphorylated, aggregates, and accumulates in the somato-dendritic compartment of neurons. In parallel to its intracellular accumulation in AD, tau is also released in the extracellular space, as revealed by its increased presence in cerebrospinal fluid (CSF). Consistent with this, recent studies, including ours, have reported that neurons secrete tau, and several therapeutic strategies aim to prevent the intracellular tau accumulation. Previously, we reported that late endosomes were implicated in tau secretion. Here, we explore the possibility of preventing intracellular tau accumulation by increasing tau secretion. Using neuronal models, we investigated whether overexpression of the vesicle-associated membrane protein 8 (VAMP8), an R-SNARE found on late endosomes, could increase tau secretion. The overexpression of VAMP8 significantly increased tau secretion, decreasing its intracellular levels in the neuroblastoma (N2a) cell line. Increased tau secretion by VAMP8 was also observed in murine hippocampal slices. The intracellular reduction of tau by VAMP8 overexpression correlated to a decrease of acetylated tubulin induced by tau overexpression in N2a cells. VAMP8 staining was preferentially found on late endosomes in N2a cells. Using total internal reflection fluorescence (TIRF) microscopy, the fusion of VAMP8-positive vesicles with the plasma membrane was correlated to the depletion of tau in the cytoplasm. Finally, overexpression of VAMP8 reduced the intracellular accumulation of tau mutants linked to frontotemporal dementia with parkinsonism and α-synuclein by increasing their secretion. Collectively, the present data indicate that VAMP8 could be used to increase tau and α-synuclein clearance to prevent their intracellular accumulation.

Priyanka Tripathi
Dec 30, 2020; 0:jlr.RA120001190v1-jlr.RA120001190
Research Articles

In SAS Retail Space Management, it should be possible to click on any location object, then Show Properties, and change the location fill color. This can be done on the gray-filled objects. However, w

SAS  Episode Analytics 3.1 requires the ability to capture user interactions with the user interface for auditing purposes. To support the required functionality a new table has been add

When you use SAS/ACCESS Interface to PostgreSQL to query a Yellowbrick database, the SAS OBS= option is not generating a limit clause on the query that is passed to the database. Click the

The SAS 9.4M4 (TS1M4) Hot Fix D7G004 for ODS Templates installs national language support (NLS) content regardless of whether the languages were installed during the initial deployment. Having sparse

Microtubules are polymers composed of αβ-tubulin subunits that provide structure to cells and play a crucial role in in the development and function of neuronal processes and cilia, microtubule-driven extensions of the plasma membrane that have sensory (primary cilia) or motor (motile cilia) functions. To stabilize microtubules in neuronal processes and cilia, α tubulin is modified by the posttranslational addition of an acetyl group, or acetylation. We discovered that acetylated tubulin in microtubules interacts with the membrane sphingolipid, ceramide. However, the molecular mechanism and function of this interaction are not understood. Here, we show that in human iPS cell-derived neurons, ceramide stabilizes microtubules, which indicates a similar function in cilia. Using proximity ligation assays, we detected complex formation of ceramide with acetylated tubulin in C. reinhardtii flagella and cilia of human embryonic kidney (HEK293T) cells, primary cultured mouse astrocytes, and ependymal cells. Using incorporation of palmitic azide and click chemistry-mediated addition of fluorophores, we show that a portion of acetylated tubulin is S-palmitoylated. S-palmitoylated acetylated tubulin is colocalized with ceramide-rich platforms (CRPs) in the ciliary membrane, and it is coimmunoprecipitated with Arl13b, a GTPase that mediates transport of proteins into cilia. Inhibition of S-palmitoylation with 2-bromo palmitic acid or inhibition of ceramide biosynthesis with fumonisin B1 reduces formation of the Arl13b-acetylated tubulin complex and its transport into cilia, concurrent with impairment of ciliogenesis. Together, these data show, for the first time, that CRPs mediate membrane anchoring and interaction of S-palmitoylated proteins that are critical for cilium formation, stabilization, and function. 

Recent efforts in gut microbiome studies have highlighted the importance of explicitly describing the ecological processes beyond correlative analysis. However, we are still at the early stage of understanding the organizational principles of the gut ecosystem, partially because of the limited information provided by currently used analytical tools in ecological modeling practices. Proteomics and metaproteomics can provide a number of insights for ecological studies, including biomass, matter and energy flow, and functional diversity. In this Mini Review, we discuss proteomics and metaproteomics-based experimental strategies that can contribute to studying the ecology, in particular at the mucosal-luminal interface (MLI) where the direct host-microbiome interaction happens. These strategies include isolation protocols for different MLI components, enrichment methods to obtain designated array of proteins, probing for specific pathways, and isotopic labeling for tracking nutrient flow. Integration of these technologies can generate spatiotemporal and site-specific biological information that supports mathematical modeling of the ecosystem at the MLI.

Extracellular vesicles (EVs) secreted by the epididymal epithelium transfer to spermatozoa key proteins that are essential in promoting motility and subsequent fertilization success. Using the domestic cat model, the objectives were to (1) characterize and compare protein content of EVs between segments of the epididymis, and (2) compare EV protein compositions between normo- and teratospermic individuals (producing >60% of abnormal spermatozoa). Epididymal EVs from adult cats were isolated and assessed via liquid chromatography tandem MS. Both male types shared 3008 proteins in total, with 98 and 20 EV proteins unique to normospermic and teratospermic males, respectively. Expression levels of several proteins changed between epididymal segments in both male types. Several proteins in both groups were related to sperm motility (e.g. hexokinase 1, adenylate kinase isoenzyme) and zona pellucida or oolemma binding (e.g. disintegrin and metalloproteinase domain proteins, zona binding proteins 1 and 2). Interestingly, seven cauda-derived EV proteins trended downward in teratospermic compared with normospermic males, which may relate to poor sperm quality. Collective results revealed, for the first time, EV proteins related to sequential sperm maturation with differences observed between normospermic and teratospermic individuals.

O-GlcNAcylation, the addition of a single N-acetylglucosamine residue to serine and threonine residues of cytoplasmic, nuclear, or mitochondrial proteins, is a widespread regulatory post-translational modification. It is involved in response to nutritional status and stress and its dysregulation is associated with diseases ranging from Alzheimer’s to diabetes.  While the modification was first detected over thirty-five years ago, research into the function of O-GlcNAcylation has accelerated dramatically in the last ten years due to the development of new enrichment and mass spectrometry techniques that facilitate its analysis.  This article summarizes methods for O-GlcNAc enrichment, key mass spectrometry instrumentation advancements, particularly those that allow modification site localization, and software tools that allow analysis of data from O-GlcNAc modified peptides.

We developed a simple and rapid method to enrich protein N-terminal peptides, in which the protease TrypN is first employed to generate protein N-terminal peptides without Lys or Arg and internal peptides with two positive charges at their N-termini, and then the N-terminal peptides with or without N-acetylation are separated from the internal peptides by strong cation exchange chromatography according to a retention model based on the charge/orientation of peptides. This approach was applied to 20 μg of human HEK293T cell lysate proteins to profile the N-terminal proteome. On average, 1,550 acetylated and 200 unmodified protein N-terminal peptides were successfully identified in a single LC/MS/MS run with less than 3% contamination with internal peptides, even when we accepted only canonical protein N-termini registered in the Swiss-Prot database. Since this method involves only two steps, protein digestion and chromatographic separation, without the need for tedious chemical reactions, it should be useful for comprehensive profiling of protein N-termini, including proteoforms with neo-N-termini.

Extracellular vesicle (EV) proteins from acute myeloid leukemia (AML) cell lines were analyzed using mass spectrometry. The analyses identified 2450 proteins, including 461 differentially expressed proteins (290 upregulated and 171 downregulated). CD53 and CD47 were upregulated and were selected as candidate biomarkers. The association between survival of patients with AML and the expression levels of CD53 and CD47 at diagnosis was analyzed using mRNA expression data from The Cancer Genome Atlas database. Patients with higher expression levels showed significantly inferior survival than those with lower expression levels. Enzyme-linked immunosorbent assay results of the expression levels of CD53 and CD47 from EVs in the bone marrow of patients with AML at diagnosis and at the time of complete remission with induction chemotherapy revealed that patients with downregulated CD53 and CD47 expression appeared to relapse less frequently. Network model analysis of EV proteins revealed several upregulated kinases, including LYN, CSNK2A1, SYK, CSK, and PTK2B. The potential cytotoxicity of several clinically applicable drugs that inhibit these kinases was tested in AML cell lines. The drugs lowered the viability of AML cells. The collective data suggest that AML-derived EVs could reflect essential leukemia biology.

Giardia lamblia (G. lamblia) disease is a zoonosis with a-infection rate affecting the general population of the world. Despite the constant possibility of damage due to their own metabolism, G. lamblia have survived and evolved to adapt to various environments. However, research on energy-metabolism conversion in G. lamblia is limited. This study aimed to reveal the dynamic metabolism-conversion mechanism in G. lamblia under sugar starvation by detecting global lysine acetylation and 2-hydroxyisobutyrylation sites combined with quantitative proteome analyses. A total of 2999 acetylation sites on 956 proteins and 8877 2-hydroxyisobutyryl sites on 1546 proteins were quantified under sugar starvation. Integrated Kac and Khib data revealed that modified proteins were associated with arginine biosynthesis, glycolysis/gluconeogenesis, and alanine, aspartate, and glutamate metabolism. These findings suggested that lysine acetylation and 2-hydroxyisobutyrylation were ubiquitous and provided deep insight into the metabolism-conversion mechanism in G. lamblia under sugar starvation. Overall, these results can help understand the biology of G. lamblia infections and reveal the evolution rule from prokaryote to eukaryote.

Cooking in Displacement Settings: Engaging the Private Sector in Non-wood-based Fuel Supply Research paper sysadmin 22 January 2019

In displacement settings, providing cooking solutions that reduce negative impacts on the environment and health remains a challenge for local governments, humanitarian agencies, businesses and refugees.

Summary

• Providing adequate cooking fuel and clean-burning, fuel-efficient stoves in displacement settings has long been a major challenge for local authorities, humanitarian agencies, non-governmental organizations, local communities and refugees themselves. Refugees generally have limited access to modern cooking solutions. Most either depend on insufficient humanitarian agency handouts of ‘in-kind’ firewood or have to travel long distances to collect firewood.
• There is significant potential for private-sector engagement in this context – which, though largely overlooked to date, could result in win-win scenarios for all stakeholders. Refugee camps and other displacement settings present opportunities for private-sector cooking fuel companies to expand their customer bases, with the added advantage for vendors of offering concentrated demand and scope for economies of scale.
• For the Kakuma refugee camp complex in Kenya, the Moving Energy Initiative (MEI) decided to engage with the private sector directly. The MEI requested expressions of interest from local private-sector companies for expanding sales and distribution of fuels in the complex through the concession. The winning company – National Oil Corporation of Kenya – is to receive a prize of $50,000 for its proposed concession to supply liquefied petroleum gas both to refugees in the Kakuma complex and to the surrounding host community.
• The MEI also conducted interviews with various stakeholders in other contexts and countries who are engaged in efforts to develop market-based approaches to providing clean, fuel-efficient cooking solutions to refugees.
• Based on the interviews and the concession process, the MEI recommends greater donor investment and longer-term guaranteed funding for cooking interventions. This is needed to allow sufficient time to build sustainable markets and secure the requisite engagement and investments from the private sector.
• Larger, longer-term investments by the private sector – supported through partnerships with donors and humanitarian agencies – in infrastructure and demand creation (both in and outside the refugee community) can reduce the price of alternative solutions and support a gradual transition away from subsidies.

Adopting a Market-based Approach to Boost Energy Access in Displaced Contexts Research paper sysadmin 25 March 2019

This paper evaluates the market-based approaches adopted in the MEI projects in Kenya and Burkina Faso. It articulates how such commercial strategies can be applied to the delivery of energy in displacement settings and compares this to real world examples.

• Development of long-term energy solutions in displacement settings tends to be perceived as investment that falls outside the remit of emergency responses. In addition, when emergency energy supply measures are implemented they often result in expensive, unreliable and unhealthy energy provision for those in protracted or recurrent crises.
• There is widespread agreement among humanitarian and development experts that an effective refugee response should include long-term development solutions as well as emergency relief.
• The energy access imperative is more pronounced when considering the need for effective energy distribution in practically all camp activities and basic necessities: pumping and treatment of clean water; heating and cooling for food storage and cooking; energy for livelihood activities; and provision of light for schooling, hospitals and the prevention of violence against women and children.
• Minor shifts in household energy use to basic solar lighting options and non-wood fuels would save $303 million annually on refugee fuel costs.
• Within refugee contexts in Kenya and Burkina Faso, the MEI sought to examine opportunities to use market interventions, rather than in-kind distributions, to improve clean energy access over the long-term and test the delivery of market-based approaches.

Infrastructure Management Contracts: Improving Energy Asset Management in Displacement Settings Research paper sysadmin 17 April 2019

This paper highlights a number of options for managing electricity infrastructure in refugee camps and outlines the challenges, opportunities and operational implications associated with them. It takes the Kalobeyei settlement in Kenya as a case study.

• Building and maintaining electricity infrastructure to power offices, businesses, households and other operations in displacement settings is difficult. It is especially challenging for the Office of the United Nations High Commissioner for Refugees (UNHCR) and its partner agencies, because supplying electricity is not their core business.
• Private-sector companies exist that are willing and able to develop infrastructure management contracts to provide energy as a service in displacement settings. However, institutional barriers within humanitarian agencies persist, with short budgeting cycles in particular preventing humanitarian agencies from entering into the sorts of long-term service agreements required by the private sector.
• A number of options exist to leverage the expertise of the private sector through ‘public–private partnership’ (P3) structures. Such mechanisms can promote more efficient management of infrastructure by drawing on private-sector experience and expertise, incentivizing appropriate risk-sharing and providing options to leverage private capital in project development.
• Field work from the Kalobeyei settlement in Kenya suggests that a solar/diesel hybrid mini-grid solution was the most economical option to power camp services and infrastructure there. Compared to distributed diesel generation, the annual savings in operating costs were estimated at $49,880, with the additional investment paid back within 3.6 years.
• Humanitarian agencies need to be willing to change their policies to enable long-term service agreements. Alternatively (or, more likely, in conjunction with this option), financial mechanisms such as partial risk guarantees need to be developed to offset some of the risks. This change will need high-level support from donors and humanitarian agencies.
• Once the first infrastructure management contracts can be signed and tested in displacement locations (through the use of donor funding or otherwise) and associated data collected, it will ease the way for future investments in these types of projects.

Gabe Kapler is trying to keep the focus on his players in 2019, but it might be an impossible task.

Afonso Dhlakama’s Death Changes the Calculation for Peace Prospects in Mozambique Expert comment sysadmin 4 May 2018

If politicians continue to act in good faith, the death of the opposition leader may be a significant opportunity to finally draw a line under Mozambique’s long war.

The unexpected death of opposition and ex-rebel leader Afonso Dhlakama on 3 May is a game changer for Mozambique’s politics and an almost-completed peace process. The 65-year old Dhlakama, who died of a heart attack, had led Renamo for 38 years and had totally dominated his party. Dhlakama regularly boasted that he was Mozambique’s ‘father of democracy’, despite not allowing competition within his own party, and he leaves a legacy of more than 30 years of struggle, through both armed action and peaceful politics.

A long war

Originally Renamo had been a tool for the white minority regimes of Rhodesia and apartheid South Africa to challenge the socialist Frelimo political party that took power in Mozambique in 1975. But under Dhlakama’s command, by the late 1980s Renamo had become increasingly independent and rooted in Mozambique. After Renamo’s long war with Frelimo ground to a hurting stalemate, a transition led to Mozambique’s first multiparty elections in 1994, and the creation of a new joint army. A ‘pay and scatter’ programme successfully dispersed and reintegrated many thousands of ex-combatants.

But early post-election gains did not translate to lasting peace. Disarmament was a time-limited, technical process, and devoted declining resources and attention to clusters of ex-combatants that failed to disperse. In addition, Dhlakama was allowed to maintain an armed militia under the guise of a presidential guard.

Mounting economic inequality, notably in opposition strongholds such as central Mozambique, saw Renamo made political gains and Dhlakama nearly won the 1999 presidential elections. (Some believe he did.) The result focused Frelimo’s attention on the threat that Renamo posed and, ultimately, a strategy of pursuing total Frelimo domination across the country, culminating in a crushing Frelimo victory at the 2009 elections.

This humiliated and marginalized former Renamo rebels, resulting in Dhlakama ordering their return to targeted armed violence in 2013. Frelimo’s new leader, President Filipe Nyusi, took power in 2015 and sought direct dialogue with Dhlakama. Five rounds of internationally mediated peace talks took place from July to December. Finally, in late December 2016, Dhlakama announced a unilateral truce, which was extended twice and subsequently made indefinite.

New peace talks also started and, in August 2017 and February 2018, President Nyusi and Dhlakama showed the courage to meet in person, near Renamo’s base in central Mozambique, to build up mutual trust and discuss the details of the emerging peace deal – including the demobilization or integration into government security forces for Renamo’s now mostly middle-aged gunmen.

Dhlakama the ‘Big Man’

Dhlakama’s sudden death has fundamentally changed the negotiation dynamics. He never allowed for any serious succession planning, and ensured all key decisions were his and his alone. Renamo had already decided that he would be its presidential candidate for the 2019 national elections.

His party is significantly weakened by his death and unlikely able to fully recover – but needs to try and reach consensus quickly on a successor, as it will also compete in municipal elections in October and was expecting significant gains. There will be a number of contenders to succeed him including from the parliamentary wing, led by his niece Ivone Soares, its secretary general, Manuel Bissopo, and a few others.

But Renamo’s key leverage for now remains some 1,000 middle-aged gunmen in central Mozambique who have been stoically loyal to Dhlakama since the 1980s and who have little respect for the younger generation of professional politicians based in Maputo. Some may be bought off by government offers, others integrated into localised organized crime groups and others into internal Renamo sectarianism. The risk of fragmentation is real.

Renamo’s weakness could also embolden Frelimo hardliners to seek a return to unilateral domination of Mozambique’s political landscape, and to undermine the peace process. That would be a serious tactical mistake by Frelimo, as a lasting deal is close and the death of Dhlakama could actually assist in making this settlement lasting. Dhlakama was quixotic and prone to changing his mind, often influenced by the last person he spoke to – his death potentially introduces greater predictability in negotiations and in any post-deal implementation.

President Nyusi is clearly aware of this as he hailed on state television TVM that Dhlakama was ‘a citizen who has always worked for Mozambique’ and said he was distraught at the news of his death. He stated, ‘I hope that we as Mozambicans can continue to do everything so things do not go down.’ He also addressed Renamo’s support base by saying that ‘[Dhlakama] did everything so that there would be peace. The last time he spoke to me, he said he was not going to miss out anything in peace negotiations.’

Renamo’s gunmen are fatigued and want to retire with dignity but are vulnerable to manipulation and political miscalculation by Mozambican’s positioning politicians. International partners and investors can engage, by emphasizing that sustainable peace is the only pathway to poverty reduction and inclusive economic development.

This includes assisting development and reconciliation projects in areas impacted by the renewed conflict since 2013. Long-term investment for development in Renamo’s key constituencies could help avoid fragmentation at a critical time – faith groups and NGOs may also have a key role to play.

If Mozambique’s politicians continue to act in good faith, the death of Dhlakama may constitute a significant opportunity to finally draw a line under Mozambique’s long war.

Mine Action in Angola: Clearing the Legacies of Conflict to Harness the Potential of Peace Other resource sysadmin 14 June 2019

This publication draws on and updates the briefing note published following a meeting of the All- Party Parliamentary Group (APPG) on Angola on 26 April 2017. It also incorporates insights from a Chatham House Africa Programme conference session on the legacies of the Angolan Civil War, held on 23 March 2018; and draws on the Africa Programme’s research into conservation-driven development models in Southern Africa.

Almost two decades after the end of its civil war, Angola remains one of the most heavily landmine-contaminated countries in the world. The Angolan government has committed to clearing its landmines by 2025, and there is constructive collaboration between the government and mine clearing agencies in this endeavour, but the target will be achievable only if a decline in funding from international donors is reversed. International funding for mine clearance in Angola fell by more than 80 per cent between 2005 and 2017, and this sharp drop in external support has compounded the impact on domestic funding for national clearance efforts as a result of the downturn in prices for Angola’s main export commodities.

The national mine action agency, the Comissão Nacional Intersectorial de Desminagem e Assistência Humanitária (CNIDAH), is supported by the Mines Advisory Group (MAG), Norwegian People’s Aid (NPA) and the HALO Trust. By 2017, 15 years after the end of the civil war, these organizations had collectively helped clear 56 per cent of known landmine-contaminated land. State-led demining has focused principally on clearing areas designated for infrastructure projects. Now, it is critical that humanitarian demining in largely agricultural and conservation areas is prioritized to bring to an end the daily threat to Angola’s rural poor – as well as to the country’s livestock and wildlife – of injury or death as a result of landmine accidents.

Angola has some of the world’s most important remaining wilderness, including the tributary system for the unique Okavango Delta, and the country has the potential to host one of the most diverse wildlife populations on the continent. However, the presence of landmines and other remnants of the civil war render large areas of the country unsafe both for wildlife and for the local people, whose ability to derive a sustainable livelihood from their natural environment is fundamental to its protection.

Wildlife and tourism provide important economic opportunities for diversification beyond an oil-dominated economy. Critically, Angola’s economic diversification and development objectives can only be achieved if the landmines that prohibit access to land for agriculture, mining, tourism and wildlife are cleared.

There are economic opportunities for released land in the most heavily mined provinces of Cuando Cubango and Moxico. Already, some new funding for mine action in Angola, if upscaled or matched by international donors, could be transformative for its people, and for the conservation of the region’s vital biodiversity.

Hope, Peace and Reconciliation: Pope Francis in Mozambique Expert comment sysadmin 4 September 2019

A papal visit will highlight the importance of the recently signed peace agreement between the government and opposition.

Pope Francis’ visit to Mozambique on 4–6 September comes at a critical political moment. The theme for the papal Africa trip (which also includes Madagascar and Mauritius) is ‘pilgrim of hope, peace and reconciliation’. This is especially relevant for Mozambique, as this is the first week of the official campaign for Mozambique’s sixth national elections on 15 October.

It is also the one-month anniversary of the Maputo Accords for Peace and Reconciliation between the government and the armed opposition, RENAMO (and the fifth anniversary of the previous such agreement in 2014).

What is unusual is that the pope accepted to visit Mozambique just after a peace accord and in the run-up to national elections. Something similar has happened only once, when Pope John Paul II visited Angola in June 1992 (following the Bicesse Accords) prior to the country’s first ever national elections in September. Unfortunately Pope John Paul’s preaching of reconciliation and pluralism failed and civil war resumed some months later, following rejection of the preliminary election results. Angola’s civil war only finally ended a decade later in 2002.

The last papal visit to Mozambique was also by Pope John Paul II in 1988, when civil war was still ongoing, and the country was still a single party state. Despite the war, massive congregations attended and RENAMO reached local ceasefires and agreements to maintain electricity supply to honour the visit. Some of the seeds for the Rome peace process were laid during this trip – especially as it also represented a formal reconciliation of FRELIMO, the ruling party, with the Catholic Church.

This papal visit to Mozambique is equally anticipated, as was highlighted several times during speeches at the 6 August peace agreement signing in Maputo. When I was in Maputo last month, sales of papal-pictured capulanas (a Mozambican sarong) were brisk and Mozambican television carried countdown clocks on many programmes for the touchdown of Pope Francis on national soil.

The Catholic Church has played an instrumental role in promoting peace in Mozambique over the years. The 1977–92 civil war ended through negotiations hosted at the Sant’ Egidio lay community in Rome, and the current Archbishop of Bologna, Dom Matteo Zuppi (who led the Sant’ Egido negotiations in 1992 and is soon to be made a cardinal) was an official witness to 6 August accords signing.

When targeted armed conflict resumed in 2013, faith groups once more re-engaged and in 2016 Sant’ Egidio once more co-led mediation efforts, less successfully than in 1991–92. Sant’ Egidio (including during a presidential visit to Rome in July) contributed to convincing the Vatican that this papal visit should occur before the October elections.

President Filipe Nyusi anxiously wanted this visit to occur before the elections. He is seeking re-election for his second and final term and a papal visit should help win some votes. His party, FRELIMO, is also worried about securing a majority in the national assembly, as it has been weakened by patchy delivery of services and ongoing high-level corruption scandals.

This year, President Nyusi’s priorities have been to show that he can attract international investment (such as Andarko’s recently announced final investment decision on its gas project), a peace agreement with RENAMO (the August agreements) and a papal visit, so a successful trip would complete his goals.

The pope’s ‘hope, peace and reconciliation’ message of his visit is important. Twice previously, the FRELIMO-led government and RENAMO have reached definitive agreements, in Rome (1992) and Maputo (2014), but failed to fully end bloodshed. This new August 2019 agreement is the third attempt, and if it is to last, it will require political goodwill, compromise and an acceptance of more inclusive national politics by both parties.

There are two immediate threats to this agreement. The first is the forthcoming 15 October elections and their conduct could make or break it. Accepting reconciliation and greater pluralism underpins this agreement, but RENAMO expects to increase its share of the parliamentary vote and win a majority in some provinces (and therefore indirectly elect their choice for governor).

A second threat is the ‘Military Junta’, a RENAMO splinter group that claims to be 500 strong, but probably accounts for 80 armed persons. It rejects the 6 August agreement and warns that it could disrupt the elections. This group has asked for mediation, and hopefully can be accommodated in a side deal to the main one agreed in August, which already provides for the reintegration of over 5,000 RENAMO supporters and combatants.

A recent Chatham House research paper on elite bargains in Mozambique concluded that the October elections will be the first immediate test of the August agreement. If the elections pass without significant electoral manipulation or violence and this August deal sticks on the third attempt, the domestic focus should then move onto poverty reduction, combating inequality, education and solving the new security crisis with Islamic militants in Cabo Delgado province.

Mozambique’s Peace and National Reconciliation Agreement: One Year On 6 August 2020 — 2:30PM TO 4:30PM Anonymous (not verified) 29 July 2020 Online

August 6, 2020 marks one year since the Peace and National Reconciliation Agreement was signed in Maputo. The agreement, signed by the President of Mozambique Filipe Nyusi and RENAMO leader Ossufo Momade, and witnessed by regional and international political and religious leaders, ended the return to conflict that started in 2013.

It also paved the way for Mozambique’s national elections in October 2019. Since the agreement, the Mozambique Liberation Front (FRELIMO) won a landslide victory in the elections, weakening RENAMO, and a splinter group has conducted targeted armed violence in Manica and Sofala provinces. Yet, the disarmament, demobilization, and reintegration (DDR) process has made progress.

At this event, senior figures reflect on the peace agreement and the key factors of its success. The event also draws upon insights from the authors of recent publications on the latest peace agreement in the context of longer term trends of democratization and peace-building in Mozambique.

A Chatham House Africa Programme research paper published in August 2019, Prospects for a Sustainable Elite Bargain in Mozambique: Third Time Lucky?, examined how the deal was achieved. The Portuguese version includes the full text of the peace accord. Read the research paper in Portuguese or English here.

Advanced technologies in the face of war 24 October 2022 — 1:00PM TO 2:00PM Anonymous (not verified) 5 October 2022 Online

How is NATO strengthening its technological edge?

Russia’s invasion of Ukraine has brought with it a heavy focus on technology and weaponry, particularly as casualties mount and large numbers of equipment are lost on both sides. The conflict has highlighted how states and their militaries seek technological superiority and how access to advanced capabilities can help shape the course of the war.

Aiming to sharpen the Alliance’s technological edge, NATO is working to support the development of emerging and potentially disruptive technologies such as artificial intelligence (AI), autonomous systems, biotechnologies and quantum technologies that are seen as presenting both risks and opportunities for the Alliance.

As part of this work, NATO’s newly formed Defence Innovation Accelerator for the North Atlantic (DIANA), hosted by both the UK and Estonia, brings together academia, industry and government to support the development of critical technologies to deter and defend against existing and future threats.

Key questions to be considered by the panel include:

• How will the technologies that form the focus of DIANA’s efforts strengthen the Alliance and prepare it to better deal with threats to peace and security across the region?

• How will these technologies be applied and used in war?

• To what extent can a war be won by technology?

• Is Ukraine, and other future conflict zones, in danger of becoming a testing ground for emerging technologies?

• What has the war in Ukraine taught NATO about modern warfare and how should the Alliance respond to this?

• After the commotion of AUKUS, how will the Alliance manage the sharing of technologies and IP among member states?

As with all members events, questions from the audience drive the conversation.

Read the transcript. 

The race to vaccinate 16 January 2023 — 5:00PM TO 6:00PM Anonymous (not verified) 9 December 2022 Chatham House and Online

What are the lessons from the UK’s COVID-19 vaccination campaign?

The first COVID-19 vaccination in the UK was administered on 8 December 2020, eight months after the World Health Organization (WHO) declared COVID-19 a pandemic on 11 March.

With multiple rounds of vaccines having now been administered widely, the UK is in a position to live effectively with the virus and the prospects of more lockdowns and COVID-19 restrictions have diminished.

The story behind the UK’s biggest vaccination campaign in British history is told during this discussion with Kate Bingham and Tim Hames, authors of The Long Shot: The Inside Story of the Race to Vaccinate Britain, which describes the management of complex political and operational challenges.

Juggling vaccine suppliers, Whitehall and the media, all had the potential to threaten the Vaccine Taskforce’s efforts.

This event explores the UK’s experience and lessons learned. The panel explore:

• How were the most challenging obstacles to the UK’s vaccine development, scale-up and delivery overcome?
• What does the success of the UK vaccine development and delivery mean in an international context?
• What has the COVID-19 pandemic highlighted about global cooperation on vaccine administration worldwide?
• As the pandemic moves into the rear-view mirror, how can industry and government work better together for future vaccination campaigns?

As with all members events, questions from the audience drive the conversation.

Read the transcript. 

The West must face down Putin The World Today MVieira 1 February 2022

If Russia’s ambitions are not checked, the implications will be global, warns James Nixey

After seven years of invasions, annexations, assassinations, abuses and now the current crisis in European security over the fate of Ukraine, one thing has been laid bare: the true nature of the Russian state.

Moscow made its ambition clear in mid-December with the unprecedented and public issuing of ultimatums in the form of draft treaty proposals.

Portrayed by Russia as an attempt to end Nato’s expansion eastwards, the Kremlin is in fact demanding that the United States and western institutions roll back their security guarantees to Eastern Europe. 

These are not two sides of the same coin if one believes and accepts the principles of the Helsinki Accords that the successor states to the Soviet Union are just as independent and sovereign as Russia.

Russia’s demands laid bare equate to giving it a free hand in Eastern Europe. This should not be reduced to simplistic labels such as ‘territorial expansionism’ or a ‘return to the Soviet Union’, both of which can be picked at for a lack of accuracy.

But it is, in Russia’s own words, the most explicit statement yet of its long-standing desire to return to a former age, where great powers directed their respective spheres of influence – a yearning for a time of empire and a disregard for the flow of history.

The intense diplomatic and media focus since then suggests there is a consensus that Russia has gone beyond being an awkward player at the negotiation table or a bully who can be dealt with further down the line.

But this has not as yet led to the operational conclusion that Russia must be challenged and ultimately faced down, no matter how unpalatable.

The logical response to the exposure of Russia’s true intentions would be an overhaul of western policy. Yet the West persists in its article of faith that dialogue with Russia will bring about a change in its behaviour – despite all evidence to the contrary. 

Western politicians have been anxious to avoid direct confrontation with Russia. But the Kremlin is likely to see this course of action as confirmation that it can proceed unchecked. When Moscow has chosen the path of conflict, efforts at dialogue rarely bring a peaceful resolution. 

Russia is blessed with particularly talented negotiators. While it has its fair share of angry ultra-nationalists who are easily dismissed, it also has more subtle brains at official and unofficial levels with whom western politicians are eager to engage to claim morsels of intelligence or to show that the Kremlin is not beyond redemption.

Sergei Lavrov, Russia’s foreign minister, is an intelligent and experienced man, who is adept at dismissing the protests of most of his western counterparts. In such circumstances, and with such a pressing need to avoid a war, dialogue must be tightly contained as it has the potential to lead to compromise in areas where there should be none.

Russia’s ambitions for a land empire

Eastern European states which were part of the Soviet Union or signatories to the Warsaw Pact are geographically closer to Russia and as a result more physically at risk. But their history and close relations with Moscow in the past have allowed them to acquire experience and expertise in dealing with their more powerful neighbour.

They uphold principled stances on sovereign rights, which has led the Kremlin to brand the Baltic states, Ukraine and more recently Moldova as traitors. To the West, on the other hand, they can often be seen as awkward or getting in the way.

While the sandwiched eastern states may have much to teach us about dealing with Russia, some central European countries have a closer relationship with Moscow. Serbia’s security services have recently been exposed as being under the influence of Russia’s own FSB, the Federal Security Service, successor to the KGB, and have colluded in repressing Moscow’s political opponents. At the same time, Viktor Orbán’s Hungary continues to defy the European Union with its repressions and is one of the few states that looks to Russia as a model. 

What is at stake here is a basic grasp of the nature of relations between states in the 21st century. What Russia is insisting on is its right to a land empire which is entirely at odds with the principles of statehood that now govern Europe, and indeed much of the rest of the world.

By failing to address the real nature of Russia’s demands, Europe is avoiding critical decisions that will affect its future security for generations to come. The implications of that avoidance do not only affect Europe – they are global in importance. 

Other powers, most notably China, will watch closely how the West responds to Russia and gauge its willingness to support allies, friends and partners against aggression.

Any failure to respond firmly to Russia’s approach of demanding limits on the sovereignty of its neighbours, backed by the threat of military force, can only encourage similar strong-arm tactics elsewhere. It is notable that, from Chechnya to Syria, Russia has not yet suffered an unambiguous defeat when it has asserted its ambitions through military power. 

Resolving the incompatibility between the way Russia sees itself and what the rest of Europe views as the acceptable limits of Russian power will be a long, painful process. Facing down Russia will take skill, time, spine, money, grit and self-sacrifice. Sanctions, for example, hurt those imposing them as well as the receiver. These are attributes in short supply in what Russia considers to be the weak, decadent West. 

Since such resources are unlikely to be found, the unappetizing future for relations is most likely to involve Russia continuing to chip away at European sovereignty while its own structural flaws further weaken it to the point of irrelevance, or to push it to take ever more extreme risks.

Fibroblast activation protein (FAP) is abundantly expressed in the stroma of most human solid tumors. Clinical-stage radiolabeled FAP ligands are increasingly used as tools for the detection of various cancer lesions. To unleash the full therapeutic potential of FAP-targeting agents, ligands need to remain at the tumor site for several days after administration. We recently described the discovery of OncoFAP, a high-affinity small organic ligand of FAP with a rapid accumulation in tumors and low uptake in healthy tissues in cancer patients. Trimerization of OncoFAP provided a derivative (named TriOncoFAP, or OncoFAP-23) with improved FAP affinity. In this work, we evaluated the tissue biodistribution profile and the therapeutic performance of OncoFAP-23 in tumor-bearing mice. Methods: OncoFAP-23 was radiolabeled with the theranostic radionuclide ¹⁷⁷Lu. Preclinical experiments were conducted on mice bearing SK-RC-52.hFAP (BALB/c nude mice) or CT-26.hFAP (BALB/c mice) tumors. ¹⁷⁷Lu-OncoFAP and ¹⁷⁷Lu-FAP-2286 were included in the biodistribution study as controls. Toxicologic evaluation was performed on Wistar rats and CD1 mice by injecting high doses of OncoFAP-23 or its cold-labeled counterpart, respectively. Results: ¹⁷⁷Lu-OncoFAP-23 emerged for its best-in-class biodistribution profile, high and prolonged tumor uptake (i.e., ~16 percentage injected dose/g at 96 h), and low accumulation in healthy organs, which correlates well with its potent single-agent anticancer activity at low levels of administered radioactivity. Combination treatment with the tumor-targeted interleukin 2 (L19-IL2, a clinical-stage immunocytokine) further expands the therapeutic window of ¹⁷⁷Lu-OncoFAP-23 by potentiating its in vivo antitumor activity. Proteomics studies revealed a potent tumor-directed immune response on treatment with the combination. OncoFAP-23 and ^natLu-OncoFAP-23 exhibited a favorable toxicologic profile, without showing any side effects or signs of toxicity. Conclusion: OncoFAP-23 presents enhanced tumor uptake and tumor retention and low accumulation in healthy organs, findings that correspond to a strongly improved in vivo antitumor efficacy. The data presented in this work support the clinical development of ¹⁷⁷Lu-OncoFAP-23 for the treatment of FAP-positive solid tumors.

To date, the imaging and diagnosis of hepatocellular carcinoma (HCC) rely on CT/MRI, which have well-known limitations. Glypican-3 (GPC3) is a cell surface receptor highly expressed by HCC but not by normal or cirrhotic liver tissue. Here we report initial clinical results of GPC3-targeted PET imaging with [⁶⁸Ga]Ga-DOTA-RYZ-GPC3 (RAYZ-8009), a peptide-based GPC3 ligand in patients with known or suspected HCC. Methods: [⁶⁸Ga]Ga-RAYZ-8009 was obtained after labeling the peptide precursor with ⁶⁸Ga from a ⁶⁸Ge/⁶⁸Ga generator and heating at 90°C for 10 min followed by sterile filtration. After administration of [⁶⁸Ga]Ga-RAYZ-8009, a dynamic or static PET/CT scan was acquired between 45 min and 4 h after administration. Radiotracer uptake was measured by SUVs for the following tissues: suspected or actual HCC or hepatoblastoma lesions, non–tumor-bearing liver, renal cortex, blood pool in the left ventricle, and gastric fundus. Additionally, tumor–to–healthy-liver ratios (TLRs) were calculated. Results: Twenty-four patients (5 patients in the dynamic protocol; 19 patients in the static protocol) were scanned. No adverse events occurred. Two patients had no lesion detected and did not have HCC during follow-up. In total, 50 lesions were detected and analyzed. The mean SUV_max of these lesions was 19.6 (range, 2.7–95.3), and the mean SUV_mean was 10.1 (range, 1.0–49.2) at approximately 60 min after administration. Uptake in non–tumor-bearing liver and blood pool rapidly decreased over time and became negligible 45 min after administration (mean SUV_mean, <1.6), with a continuous decline to 4 h after administration (mean SUV_mean, 1.0). The opposite was observed for HCC lesions, for which SUVs and TLRs continuously increased for up to 4 h after administration. In individual lesion analysis, TLR was the highest between 60 and 120 min after administration. Uptake in the gastric fundus gradually increased for up to 45 min (to an SUV_max of 31.3) and decreased gradually afterward. Conclusion: [⁶⁸Ga]Ga-RAYZ-8009 is safe and allows for high-contrast imaging of GPC3-positive HCC, with rapid clearance from most normal organs. Thereby, [⁶⁸Ga]Ga-RAYZ-8009 is promising for HCC diagnosis and staging. Further research is warranted.

Single-domain antibodies (sdAbs) demonstrate favorable pharmacokinetic profiles for molecular imaging applications. However, their renal excretion and retention are obstacles for applications in targeted radionuclide therapy (TRT). Methods: Using a click-chemistry–based pretargeting approach, we aimed to reduce kidney retention of a fibroblast activation protein α (FAP)–targeted sdAb, 4AH29, for ¹⁷⁷Lu-TRT. Key pretargeting parameters (sdAb-injected mass and lag time) were optimized in healthy mice and U87MG (FAP⁺) xenografts. A TRT study in a pancreatic ductal adenocarcinoma (PDAC) patient-derived xenograft (PDX) model was performed as a pilot study for sdAb-based pretargeting applications. Results: Modification of 4AH29 with trans-cyclooctene (TCO) moieties did not modify the sdAb pharmacokinetic profile. A 200-µg injected mass of 4AH29-TCO and an 8-h lag time for the injection of [¹⁷⁷Lu]Lu-DOTA-PEG₇-tetrazine resulted in the highest kidney therapeutic index (2.0 ± 0.4), which was 5-fold higher than that of [¹⁷⁷Lu]Lu-DOTA-4AH29 (0.4 ± 0.1). FAP expression in the tumor microenvironment was validated in a PDAC PDX model with both immunohistochemistry and PET/CT imaging. Mice treated with the pretargeting high-activity approach (4AH29-TCO + [¹⁷⁷Lu]Lu-DOTA-PEG₇-tetrazine; 3 x 88 MBq, 1 injection per week for 3 wk) demonstrated prolonged survival compared with the vehicle control and conventionally treated ([¹⁷⁷Lu]Lu-DOTA-4AH29; 3 x 37 MBq, 1 injection per week for 3 wk) mice. Mesangial expansion was reported in 7 of 10 mice in the conventional cohort, suggesting treatment-related kidney morphologic changes, but was not observed in the pretargeting cohort. Conclusion: This study validates pretargeting to mitigate sdAbs’ kidney retention with no observation of morphologic changes on therapy regimen at early time points. Clinical translation of click-chemistry–based pre-TRT is warranted on the basis of its ability to alleviate toxicities related to biovectors’ intrinsic pharmacokinetic profiles. The absence of representative animal models with extensive stroma and high FAP expression on cancer-associated fibroblasts led to a low mean tumor-absorbed dose even with high injected activity and consequently to modest survival benefit in this PDAC PDX.

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2025 Luis J. Alvarez and Admiral Grace M. Hopper Postdoc Fellowship in Computing Sciences - 102564 Division: AC-Computing Luis J. Alvarez Postdoctoral Fellowship and Admiral Grace M. Hopper Postdoctoral Fellowship in Computing Sciences The Computing Sciences Area (https://cs.lbl.gov/) at Lawrence Berkeley National Laboratory (https://www.lbl.gov) is now accepting applications for two distinguished postdoctoral fellowships in Computing Sciences: • Luis W. Alvarez Postdoctoral Fellowship, and • Admiral Grace M. Hopper Postdoctoral Fellowship. Researchers in computer science, mathematics, data science, or any computational science discipline who have received their Ph.D. no earlier than January 1, 2022 but no later than September 30, 2025 are encouraged to apply. Only one (1) application is needed and it will be considered for both postdoctoral fellowships. The successful candidates will participate in research activities in computer science, mathematics, data science, or any computational science discipline of interest to the Computing Sciences Area and Berkeley Lab. Alvarez Fellows apply advances in computer science, mathematics, computational science, data science, machine learning or AI to computational modeling, simulations, and advanced data analytics for scientific discovery in materials science, biology, astronomy, environmental science, energy, particle physics, genomics, and other scientific domains. Hopper Fellows concentrate on the development and optimization of scientific and engineering applications leveraging high-speed network capability provided by the Energy Sciences Network or run on next-generation high performance computing and data systems hosted by the National Energy Research Scientific Computing Center at Berkeley Lab. Since its founding in 2002, Berkeley Lab’s Luis W. Alvarez Postdoctoral Fellowship (go.lbl.gov/alvarez) has cultivated exceptional early career scientists who have gone on to make outstanding contributions to computer science, mathematics, data science, and computational sciences. The Admiral Grace Hopper Postdoctoral Fellowship (go.lbl.gov/hopper) was first awarded in 2015 with the goal of enabling early career scientists to make outstanding contributions in computer science and high performance computing (HPC) research. About Computing Sciences at Berkeley Lab: Whether running extreme-scale simulations on a supercomputer or applying machine-learning or data analysis to massive datasets, scientists today rely on advances in and integration across applied mathematics, computer science, and computational science, as well as large-scale computing and networking facilities, to increase our understanding of ourselves, our planet, and our universe. Berkeley Labs Computing Sciences Area researches, develops, and deploys new tools and technologies to meet these needs and to advance research in our core capabilities of applied mathematics, computer science, data science, and computational science. In addition to fundamental advances in our core capabilities, we impact such areas as astrophysics and cosmology, accelerator physics, chemical science and materials science, combustion, fusion energy, nuclear physics, biology, climate change, and HPC systems and network technology. Research areas in Computing Sciences include but are not limited to: • Developing scientific applications and software technologies for extreme-scale and energy-efficient • Developing mathematical modeling for complex scientific problems • Designing algorithms to improve the performance of scientific applications • Researching digital and post-digital computer architectures for science • Developing and advancing extreme-scale scientific data management, analysis, and visualization • Developing and advancing next-generation machine learning, AI, and data science approaches for science • Advancing quantum computing and networking technologies, software, algorithms and applications • Evaluating or developing new and promising HPC systems and networking technologies • Researching methods to control and manage next-generation networks • Managing scientific data and workflows in distributed environments Qualifications: • Requires a Ph.D. in computer science, mathematics, computational science, or related discipline. • Candidates must have no more than 3 years of Postdoctoral Researcher or similar experience. • Expertise with advanced algorithms, software techniques, HPC systems and/or networking in a related research field. • Demonstrated creativity and the ability to perform independent research. • Demonstrated excellence in a related research field. • Ability to develop new cross-disciplinary partnerships that use advanced computational and/or mathematical techniques to produce unique lab capabilities. • Excellent communication skills with the ability to facilitate communications and collaborations with internal and external stakeholders. Additional Desired Qualifications: • Knowledge of advanced computing and high-performance computing. Application Process: 1. As part of your application process, you must upload and submit the following materials with your online application. 1. Cover letter 2. CV, with publication list included 3. Research Statement (no more than five (5) pages in length when printed using standard letter-size (8.5 inch x 11 inch) paper with 1-inch margins (top, bottom, left, and right) and a font size not smaller than 11 point; figures and references cited, if included, must fit within the five-page limit) 4. Contact information (name, affiliation, and email address) of at least three (3) individuals who will be able to provide letters of reference. 2. Application deadline: October 31, 2024. * It is highly advisable that you have all the required application materials and information ready and available prior to completing and submitting your application. Your application will not be considered complete if any of the above information is missing. Tentative Application Timeline: The Computing Sciences Fellowship Selection Committee is made up of a diverse representation of scientists and engineers across Berkeley Lab’s Computing Sciences Area who will conduct a thorough review of all applications received. • Application deadline: October 31, 2024 • Review and Selection: October 2024 - December 2024 • Decisions made: January/February 2025 Want to learn more about working at Berkeley Lab? Please visit: careers.lbl.gov How To Apply Apply directly online at http://50.73.55.13/counter.php?id=290341 and follow the on-line instructions to complete the application process. Berkeley Lab is committed to inclusion, diversity, equity and accessibility and strives to continue building community with these shared values and commitments. Berkeley Lab is an Equal Opportunity and Affirmative Action Employer. We heartily welcome applications from women, minorities, veterans, and all who would contribute to the Labs mission of leading scientific discovery, inclusion, and professionalism. In support of our diverse global community, all qualified applicants will be considered for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, or protected veteran status. Equal Opportunity and IDEA Information Links: Know your rights, click here (http://www.dol.gov/ofccp/regs/compliance/posters/ofccpost.htm) for the supplement: Equal Employment Opportunity is the Law and the Pay Transparency Nondiscrimination Provision (https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf) under 41 CFR 60-1.4.

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