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LeBron James has never faced a challenge like winning with these Lakers

The Lakers rank near the bottom of the league in three-point percentage after three games and spreading out around the arc will not work for this team. Couple that with a fast pace and James's age and there are real concerns to address in L.A.




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Fantasy Football start/sit tips Week 10: Bench all Redskins players. Like now.

It's a bad week to own a Washington skill position player, but a great time to get Tevin Coleman and other into your lineup.




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Alyssa Milano on why she went to Trump’s impeachment trial, and how Schiff’s presentation was like ‘watching a one-man show’

The actress and activist wants to encourage the public to get involved because “showing up is participating in how this all works.”




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Donald Trump Jr.’s ‘Triggered’ reads like a campaign book for 2024




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The Scaramucci story ends like all the others: With a Trump tweetstorm

Welcome to the Resistance, Mooch. Better late than never.




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She moved to Texas for safety. Now the state wants to keep out refugees like her.

Gov. Greg Abbott’s decision plays into some unfortunate stereotypes.




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A socialist is likely to win the 2020 election. No, not Bernie Sanders.

How the president has proved himself a more successful socialist than Sanders is likely to ever be.




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A global recession is likely here. Lawmakers need to do their jobs.

Policymakers need to step up and do something useful — yesterday.




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If they’re heroes, pay and protect them like heroes

Those taking on great risk should be appropriately compensated.




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Less than essential: Why smart speakers are like smartwatches, not smartphones

The devices have reached 50% of US homes, but fallen flat as a channel

Please visit Search Engine Land for the full article.




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Channel24.co.za | Sofía Vergara shows off her sizzling bikini body alongside lookalike niece

Can you tell who’s who? No, nor can we.




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Google Duo now lets you make group video calls on the web, just like Google Meet

Google's video chat app got new features this week. No, the other one. No, the other other one.

In a Friday blog post, Google announced some snazzy new features for Duo, one of its three video chat services. Let's get this out of the way early: Duo is the one that's mobile-friendly and resembles FaceTime more than Hangouts and Meet.

The new features make more sense with that in mind. Google added something called "Family Mode" to Duo, in which you can draw silly little doodles on the video feed, presumably to amuse the little ones on the call. There are also AR effects you can use on one-on-one calls on Android and iOS, similar to those available on Facebook's video calls. Read more...

More about Google, Video Chat, Google Hangouts, Google Duo, and Google Meet




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Soap promises to make you smell like "Naval Supremacy"

Ironic toxic masculinity is in fashion! The Duke Cannon Naval Supremacy Big Brick of Bar Soap for Men [Amazon] promises that those thusly-soaped will smell of "naval supremacy", "productivity" or other humorously-abstract scents. (More traditionally "manly" odors such as tobacco, leather, burned vegetation, etc. are also available).

The veil of humor is threadbare -- "get clean and smell good without using feminine shower gels and accessories" -- but I'll admit that I do bathe in warm turpentine and it really helps.

UPDATE: Here's a balding treatment called "Lethal Uprising", spotted by Greg Sideyr.

Looking forward to Internecine Violence Toothpaste, Shambolic Venezeulan Coup Ice Cream, and Silently Endure Prison Abuse Hemmorhoid Cream with Aloe Vera. Read the rest




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Last night's massive boom over Puget Sound was likely exploding meteor

A massive boom heard Wednesday night over Puget Sound on the northwestern coast of Washington was most likely an exploding meteor. Or that's what They want us to believe anyway. The American Meteor Society registered a dozen reports. Video above. Keep your eyes on the upper left of the frame.

"The more I read the more inclined I am to believe this was a fireball (which is a meteor that is larger and brighter than normal)," the American Meteor Society's Bob Lunsford said. "I'm certain now that this was a meteoric event."

From KOMONews:

Most meteors' explosions are heard about a minute or two after they explode due to the time it takes the sound to reach the Earth's surface, Lunsford said. Sound travels at 767 mph in standard atmosphere conditions, indicating this fireball exploded some 35 miles away.

"If this was larger than normal then the sound could have originated from a higher altitude. So a delay of 3 minutes is entirely possible," Lunsford said. "Meteors become visible at a height of around 50 miles so your estimate is well within that range."

Lunsford said because there was a boom, it’s very likely there are small, rock-sized pieces of the meteor somewhere on the ground. When a meteor causes a boom, it’s “pretty far down” in the atmosphere.

Read the rest




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BREAKING: CBS News Allegedly Staged Fake COVID19 Testing In MI…Makes Dem Gov Whitmer Look Like She’s Doing More To Help Citizens Than Fed Government [VIDEO]

The following article, BREAKING: CBS News Allegedly Staged Fake COVID19 Testing In MI…Makes Dem Gov Whitmer Look Like She’s Doing More To Help Citizens Than Fed Government [VIDEO], was first published on 100PercentFedUp.com.

Project Veritas founder James O’Keefe has done it again. He’s uncovered yet another deceitful piece of coverage on the Wuhan coronavirus pandemic in America by CBS News. O’Keefe begins his interview with a man whose identity is being hidden, “You’re telling me—you’re 100% certain, that CBS News, CBS News Corporation national—staged a fake event. They […]

Continue reading: BREAKING: CBS News Allegedly Staged Fake COVID19 Testing In MI…Makes Dem Gov Whitmer Look Like She’s Doing More To Help Citizens Than Fed Government [VIDEO] ...




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Pro-515 of the dynamin-like GTPase MxB contributes to HIV-1 inhibition by regulating MxB oligomerization and binding to HIV-1 capsid [Microbiology]

Interferon-regulated myxovirus resistance protein B (MxB) is an interferon-induced GTPase belonging to the dynamin superfamily. It inhibits infection with a wide range of different viruses, including HIV-1, by impairing viral DNA entry into the nucleus. Unlike the related antiviral GTPase MxA, MxB possesses an N-terminal region that contains a nuclear localization signal and is crucial for inhibiting HIV-1. Because MxB previously has been shown to reside in both the nuclear envelope and the cytoplasm, here we used bioinformatics and biochemical approaches to identify a nuclear export signal (NES) responsible for MxB's cytoplasmic location. Using the online computational tool LocNES (Locating Nuclear Export Signals or NESs), we identified five putative NES candidates in MxB and investigated whether their deletion caused nuclear localization of MxB. Our results revealed that none of the five deletion variants relocates to the nucleus, suggesting that these five predicted NES sequences do not confer NES activity. Interestingly, deletion of one sequence, encompassing amino acids 505–527, abrogated the anti-HIV-1 activity of MxB. Further mutation experiments disclosed that amino acids 515–519, and Pro-515 in particular, regulate MxB oligomerization and its binding to HIV-1 capsid, thereby playing an important role in MxB-mediated restriction of HIV-1 infection. In summary, our results indicate that none of the five predicted NES sequences in MxB appears to be required for its nuclear export. Our findings also reveal several residues in MxB, including Pro-515, critical for its oligomerization and anti-HIV-1 function.




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Pro-515 of the dynamin-like GTPase MxB contributes to HIV-1 inhibition by regulating MxB oligomerization and binding to HIV-1 capsid [Microbiology]

Interferon-regulated myxovirus resistance protein B (MxB) is an interferon-induced GTPase belonging to the dynamin superfamily. It inhibits infection with a wide range of different viruses, including HIV-1, by impairing viral DNA entry into the nucleus. Unlike the related antiviral GTPase MxA, MxB possesses an N-terminal region that contains a nuclear localization signal and is crucial for inhibiting HIV-1. Because MxB previously has been shown to reside in both the nuclear envelope and the cytoplasm, here we used bioinformatics and biochemical approaches to identify a nuclear export signal (NES) responsible for MxB's cytoplasmic location. Using the online computational tool LocNES (Locating Nuclear Export Signals or NESs), we identified five putative NES candidates in MxB and investigated whether their deletion caused nuclear localization of MxB. Our results revealed that none of the five deletion variants relocates to the nucleus, suggesting that these five predicted NES sequences do not confer NES activity. Interestingly, deletion of one sequence, encompassing amino acids 505–527, abrogated the anti-HIV-1 activity of MxB. Further mutation experiments disclosed that amino acids 515–519, and Pro-515 in particular, regulate MxB oligomerization and its binding to HIV-1 capsid, thereby playing an important role in MxB-mediated restriction of HIV-1 infection. In summary, our results indicate that none of the five predicted NES sequences in MxB appears to be required for its nuclear export. Our findings also reveal several residues in MxB, including Pro-515, critical for its oligomerization and anti-HIV-1 function.




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Kruppel-like factor 3 (KLF3) suppresses NF-{kappa}B-driven inflammation in mice [Immunology]

Bacterial products such as lipopolysaccharides (or endotoxin) cause systemic inflammation, resulting in a substantial global health burden. The onset, progression, and resolution of the inflammatory response to endotoxin are usually tightly controlled to avoid chronic inflammation. Members of the NF-κB family of transcription factors are key drivers of inflammation that activate sets of genes in response to inflammatory signals. Such responses are typically short-lived and can be suppressed by proteins that act post-translationally, such as the SOCS (suppressor of cytokine signaling) family. Less is known about direct transcriptional regulation of these responses, however. Here, using a combination of in vitro approaches and in vivo animal models, we show that endotoxin treatment induced expression of the well-characterized transcriptional repressor Krüppel-like factor 3 (KLF3), which, in turn, directly repressed the expression of the NF-κB family member RELA/p65. We also observed that KLF3-deficient mice were hypersensitive to endotoxin and exhibited elevated levels of circulating Ly6C+ monocytes and macrophage-derived inflammatory cytokines. These findings reveal that KLF3 is a fundamental suppressor that operates as a feedback inhibitor of RELA/p65 and may be important in facilitating the resolution of inflammation.




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In Vivo Identification of Human Small Ubiquitin-like Modifier Polymerization Sites by High Accuracy Mass Spectrometry and an in Vitro to in Vivo Strategy

Ivan Matic
Jan 1, 2008; 7:132-144
Research




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The Climate Briefing: Episode 1 - What Does Success Look Like At COP26?







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Bending It Like Bernoulli

The colored "strings" you see represent air flow around the soccer ball, with the dark blue streams behind the ball signifying a low-pressure wake. Computational fluid dynamics and wind tunnel experiments have shown that there is a transition point between smooth and turbulent flow at around 30 mph, which can dramatically change the path of a kick approaching the net as its speed decreases through the transition point. Players taking free-kicks need not be mathematicians to score, but knowing the results obtained from mathematical facts can help players devise better strategies. The behavior of a ball depends on its surface design as well as on how it.s kicked. Topology, algebra, and geometry are all important to determine suitable shapes, and modeling helps determine desirable ones. The researchers studying soccer ball trajectories incorporate into their mathematical models not only the pattern of a new ball, but also details right down to the seams. Recently there was a radical change from the long-used pentagon-hexagon pattern to the adidas +TeamgeistTM. Yet the overall framework for the design process remains the same: to approximate a sphere, within less than two percent, using two-dimensional panels.




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So You Want To Save Humanity? Manage Nature Like A Business

In the wake of the COVID-19 crisis, any economic stimulus measures must safeguard nature or governments risk exposing humanity to further pandemics.




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www.like143.com




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Natwest's newly launched Bó app looks a lot like Monzo

From its brightly coloured card to the user experience of its app and the benefits it offers, the long-gestating Natwest fintech project looks like little more than a Monzo copycat




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CBD News: First, I would like to extend my deep appreciation to Mr. Kenneth Deer and Mr. Charles Patton, Elders of the Mohawk Community from Kahnawake, Canada, for providing a traditional blessing and for sharing with us their rich cultural heritage, whic




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CBD News: First, I would like to congratulate the Arab Society for Fungal Conservation for declaring 20 February as Egyptian Fungus Day. This initiative truly demonstrates commitment towards conservation of biodiversity and promoting the objectives of the




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CBD News: With the aim of raising public awareness about the importance of biodiversity, a documentary detailing what it is like to spend four weeks over two summers exploring the biodiversity of the Grand Lake protected natural area in the Canadian provi




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CBD News: I would like to start by acknowledging and welcoming the good results of a successful 2016 United Nations Biodiversity Conference here in Cancun, Mexico, where, after arduous negotiations




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CBD News: I would like to thank Ms. Naoko Ishii for inviting me to brief the Council on the recent developments under the Convention on Biological Diversity. As you may be aware, I started my tenure as the Executive Secretary of the Convention just two mo




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CBD News: On behalf of the Executive Secretary of the Convention on Biological Diversity, Dr. Cristiana Pa?ca Palmer, I would like to welcome you to the "Capacity building workshop for Caribbean Small Island Developing States towards achieving Aichi




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Asymptotic distribution of the maximum likelihood estimator in the fractional Vašíček model

S. S. Lohvinenko and K. V. Ralchenko
Theor. Probability and Math. Statist. 99 (2020), 149-168.
Abstract, references and article information





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Glucagon-Like Peptide 1 Receptor Agonists for Type 2 Diabetes

Deborah Hinnen
Aug 1, 2017; 30:202-210
Feature Articles




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Surfaces that grip like gecko feet could be easily mass-produced

(Georgia Institute of Technology) The science behind sticky gecko's feet lets gecko adhesion materials pick up about anything. But cost-effective mass production of the materials was out of reach until now. A new method of making them could usher the spread of gecko-inspired grabbers to assembly lines and homes.




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Inter-{alpha}-inhibitor heavy chain-1 has an integrin-like 3D structure mediating immune regulatory activities and matrix stabilization during ovulation [Glycobiology and Extracellular Matrices]

Inter-α-inhibitor is a proteoglycan essential for mammalian reproduction and also plays a less well-characterized role in inflammation. It comprises two homologous “heavy chains” (HC1 and HC2) covalently attached to chondroitin sulfate on the bikunin core protein. Before ovulation, HCs are transferred onto the polysaccharide hyaluronan (HA) to form covalent HC·HA complexes, thereby stabilizing an extracellular matrix around the oocyte required for fertilization. Additionally, such complexes form during inflammatory processes and mediate leukocyte adhesion in the synovial fluids of arthritis patients and protect against sepsis. Here using X-ray crystallography, we show that human HC1 has a structure similar to integrin β-chains, with a von Willebrand factor A domain containing a functional metal ion-dependent adhesion site (MIDAS) and an associated hybrid domain. A comparison of the WT protein and a variant with an impaired MIDAS (but otherwise structurally identical) by small-angle X-ray scattering and analytical ultracentrifugation revealed that HC1 self-associates in a cation-dependent manner, providing a mechanism for HC·HA cross-linking and matrix stabilization. Surprisingly, unlike integrins, HC1 interacted with RGD-containing ligands, such as fibronectin, vitronectin, and the latency-associated peptides of transforming growth factor β, in a MIDAS/cation-independent manner. However, HC1 utilizes its MIDAS motif to bind to and inhibit the cleavage of complement C3, and small-angle X-ray scattering–based modeling indicates that this occurs through the inhibition of the alternative pathway C3 convertase. These findings provide detailed structural and functional insights into HC1 as a regulator of innate immunity and further elucidate the role of HC·HA complexes in inflammation and ovulation.




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Kruppel-like factor 3 (KLF3) suppresses NF-{kappa}B-driven inflammation in mice [Immunology]

Bacterial products such as lipopolysaccharides (or endotoxin) cause systemic inflammation, resulting in a substantial global health burden. The onset, progression, and resolution of the inflammatory response to endotoxin are usually tightly controlled to avoid chronic inflammation. Members of the NF-κB family of transcription factors are key drivers of inflammation that activate sets of genes in response to inflammatory signals. Such responses are typically short-lived and can be suppressed by proteins that act post-translationally, such as the SOCS (suppressor of cytokine signaling) family. Less is known about direct transcriptional regulation of these responses, however. Here, using a combination of in vitro approaches and in vivo animal models, we show that endotoxin treatment induced expression of the well-characterized transcriptional repressor Krüppel-like factor 3 (KLF3), which, in turn, directly repressed the expression of the NF-κB family member RELA/p65. We also observed that KLF3-deficient mice were hypersensitive to endotoxin and exhibited elevated levels of circulating Ly6C+ monocytes and macrophage-derived inflammatory cytokines. These findings reveal that KLF3 is a fundamental suppressor that operates as a feedback inhibitor of RELA/p65 and may be important in facilitating the resolution of inflammation.




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Study shows wetter climate is likely to intensify global warming

(Virginia Institute of Marine Science) New study indicates the increase in rainfall forecast by global climate models is likely to hasten the release of carbon dioxide from tropical soils, further intensifying global warming by adding to human emissions of this greenhouse gas into Earth's atmosphere.




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It felt like prison - Cruise ship worker happy to be home

"It felt like prison." Those are the exact words of Jermaine who returned to the island yesterday after he was stranded on a cruise ship for 56 days in South Hampton, United Kingdom. "Bwoy we are out of prison ... it was rough mentally. They...




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Insulin-Like Growth Factor Dysregulation Both Preceding and Following Type 1 Diabetes Diagnosis

Insulin-like growth factors (IGFs), specifically IGF1 and IGF2, promote glucose metabolism, with their availability regulated by IGF-binding proteins (IGFBPs). We hypothesized that IGF1 and IGF2 levels, or their bioavailability, are reduced during type 1 diabetes development. Total serum IGF1, IGF2, and IGFBP1–7 levels were measured in an age-matched, cross-sectional cohort at varying stages of progression to type 1 diabetes. IGF1 and IGF2 levels were significantly lower in autoantibody (AAb)+ compared with AAb relatives of subjects with type 1 diabetes. Most high-affinity IGFBPs were unchanged in individuals with pre–type 1 diabetes, suggesting that total IGF levels may reflect bioactivity. We also measured serum IGFs from a cohort of fasted subjects with type 1 diabetes. IGF1 levels significantly decreased with disease duration, in parallel with declining β-cell function. Additionally, plasma IGF levels were assessed in an AAb+ cohort monthly for a year. IGF1 and IGF2 showed longitudinal stability in single AAb+ subjects, but IGF1 levels decreased over time in subjects with multiple AAb and those who progressed to type 1 diabetes, particularly postdiagnosis. In sum, IGFs are dysregulated both before and after the clinical diagnosis of type 1 diabetes and may serve as novel biomarkers to improve disease prediction.




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Targeted optical imaging of the glucagon-like peptide 1 receptor using exendin-4-IRDye800CW

Rationale: The treatment of choice for insulinomas and focal lesions in congenital hyperinsulinism (CHI) is surgery. However, intra-operative detection can be challenging. This could be overcome with intra-operative fluorescence imaging, which provides real-time lesion detection with a high spatial resolution. Here, a novel method for targeted near-infrared (NIR) fluorescence imaging of glucagon-like peptide 1 receptor (GLP-1R) positive lesions, using the GLP-1 agonist exendin-4, labeled with IRDye800CW, was examined in vitro and in vivo. Methods: A competitive binding assay was performed using Chinese hamster lung (CHL) cells transfected with the GLP-1R. Tracer biodistribution was determined in BALB/c nude mice bearing subcutaneous CHL-GLP-1R xenografts. In vivo NIR fluorescence imaging of CHL-GLP-1R xenografts was performed. Localization of the tracer in the pancreatic islets of BALB/c nude mice was examined using fluorescence microscopy. Laparoscopic imaging was performed to detect the fluorescent signal of the tracer in the pancreas of mini pigs. Results: Exendin-4-IRDye800CW binds the GLP-1R with an IC50 value of 3.96 nM. The tracer accumulates in CHL-GLP-1R xenografts. Subcutaneous CHL-GLP-1R xenografts were visualized using in vivo NIR fluorescence imaging. The tracer accumulates specifically in the pancreatic islets of mice and a clear fluorescent signal was detected in the pancreas of mini pigs. Conclusion: These date provide the first in vivo evidence of the feasibility of targeted fluorescence imaging of GLP-1R positive lesions. Intra-operative lesion delineation using exendin-4-IRDye800CW could benefit open as well as laparoscopic surgical procedures for removal of insulinomas and focal lesions in CHI.




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Receptor-targeted photodynamic therapy of glucagon-like peptide 1 receptor positive lesions

Treatment of hyperinsulinemic hypoglycemia is challenging. Surgical treatment of insulinomas and focal lesions in congenital hyperinsulinism (CHI) is invasive and carries major risks of morbidity. Medication to treat nesidioblastosis and diffuse CHI has varying efficacy and causes significant side effects. Here, we describe a novel method for therapy of hyperinsulinemic hyperglycemia, highly selectively killing beta cells by targeted photodynamic therapy (tPDT) with exendin-4-IRDye700DX, targeting the glucagon-like peptide 1 receptor (GLP-1R). A competitive binding assay was performed using Chinese hamster lung (CHL) cells transfected with the GLP-1R. The efficacy and specificity of tPDT with exendin-4-IRDye700DX was examined in vitro in cells with different levels of GLP-1R expression. Tracer biodistribution was determined in BALB/c nude mice bearing subcutaneous CHL-GLP-1R xenografts. Induction of cellular damage and the effect on tumor growth were analyzed to determine treatment efficacy. Exendin-4-IRDye700DX has a high affinity for the GLP-1R with an IC50 value of 6.3 nM. TPDT caused significant specific phototoxicity in GLP-1R positive cells (2.3 ± 0.8 % and 2.7 ± 0.3 % remaining cell viability in CHL-GLP-1R and INS-1 cells resp.). The tracer accumulates dose-dependently in GLP-1R positive tumors. In vivo tPDT induces cellular damage in tumors, shown by strong expression of cleaved-caspase-3 and leads to a prolonged median survival of the mice (36.5 vs. 22.5 days resp. p<0.05). These data show in vitro as well as in vivo evidence for the potency of tPDT using exendin-4-IRDye700DX. This could in the future provide a new, minimally invasive and highly specific treatment method for hyperinsulinemic hypoglycemia.




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What it's like to be Australia's top tech talent

They're highly mobile, highly sought after, and tend to "upskill" off their own bat. The ball is most definitely in their court.




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UK Tech Weekly Podcast - Episode Three: The Internet of Sex Robots - Facebook likes, AI and Trump

In this week's UK Tech Weekly Podcast host Matt Egan is joined by PC Advisor staff writer Chris Minasians chats about Facebook's new like buttons, the team has contracted smartphone fever from the Mobile World Conference in Barcelona and finally, acting editor of Macworld UK David Price, discusses Donald Trump boycotting Apple.  


See acast.com/privacy for privacy and opt-out information.




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POSTPONED: Transitional Justice in Ukraine: What Might it Look Like?

Invitation Only Research Event

17 March 2020 - 9:30am to 1:00pm

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

Event participants

Kirsty Brimelow QC, Barrister, Doughty Street Chambers
Miles Jackson, Associate Professor of Law, University of Oxford
Anton Korynevych, Representative of the President of Ukraine for Crimea
Oleksandra Matviychuk, Head of the Board, Centre for Civil Liberties
Taras Tsymbrivksyy, Head, USAID Human Rights in Action Program; Ukrainian Helsinki Human Rights Union

Still grappling with the war in the east and the occupation of Crimea, Ukraine’s new leadership has announced its intention to develop its transitional justice infrastructure to respond to the human rights violations arising from Russia’s aggression. 

Numerous reports (not least ones by the UN Human Rights Monitoring Mission in Ukraine) list persecutions, illegal detentions, enforced disappearances, torture and killings among the crimes perpetrated in Crimea and parts of occupied Donbas. 

As Ukraine has only just started developing its transitional justice roadmap, this event will seek to discuss viable initial approaches, such as a ‘truth-telling commission’ or amnesties. 

The panellists will also discuss the role for civil society and those directly affected by hostilities in the transitional justice process.  

PLEASE NOTE THIS EVENT IS POSTPONED UNTIL FURTHER NOTICE.

Event attributes

Chatham House Rule

Anna Morgan

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




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Role of angiopoietin-like protein 3 in sugar-induced dyslipidemia in rhesus macaques: suppression by fish oil or RNAi [Research Articles]

Angiopoietin-like protein 3 (ANGPTL3) inhibits lipid clearance and is a promising target for managing cardiovascular disease. Here we investigated the effects of a high-sugar (high-fructose) diet on circulating ANGPTL3 concentrations in rhesus macaques. Plasma ANGPTL3 concentrations increased ~30% to 40% after 1 and 3 months of a high-fructose diet (both P < 0.001 vs. baseline). During fructose-induced metabolic dysregulation, plasma ANGPTL3 concentrations were positively correlated with circulating indices of insulin resistance [assessed with fasting insulin and the homeostatic model assessment of insulin resistance (HOMA-IR)], hypertriglyceridemia, adiposity (assessed as leptin), and systemic inflammation [C-reactive peptide (CRP)] and negatively correlated with plasma levels of the insulin-sensitizing hormone adropin. Multiple regression analyses identified a strong association between circulating APOC3 and ANGPTL3 concentrations. Higher baseline plasma levels of both ANGPTL3 and APOC3 were associated with an increased risk for fructose-induced insulin resistance. Fish oil previously shown to prevent insulin resistance and hypertriglyceridemia in this model prevented increases of ANGPTL3 without affecting systemic inflammation (increased plasma CRP and interleukin-6 concentrations). ANGPTL3 RNAi lowered plasma concentrations of ANGPTL3, triglycerides (TGs), VLDL-C, APOC3, and APOE. These decreases were consistent with a reduced risk of atherosclerosis. In summary, dietary sugar-induced increases of circulating ANGPTL3 concentrations after metabolic dysregulation correlated positively with leptin levels, HOMA-IR, and dyslipidemia. Targeting ANGPTL3 expression with RNAi inhibited dyslipidemia by lowering plasma TGs, VLDL-C, APOC3, and APOE levels in rhesus macaques.




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A human-like bile acid pool induced by deletion of hepatic Cyp2c70 modulates effects of FXR activation in mice [Research Articles]

Bile acids (BAs) facilitate intestinal absorption of lipid-soluble nutrients and modulate various metabolic pathways through the farnesoid X receptor (FXR) and Takeda G-protein-coupled receptor 5. These receptors are targets for therapy in cholestatic and metabolic diseases. However, dissimilarities in BA metabolism between humans and mice complicate translation of preclinical data. Cytochrome P450 family 2 subfamily c polypeptide 70 (CYP2C70) was recently proposed to catalyze the formation of rodent-specific muricholic acids (MCAs). With CRISPR/Cas9-mediated somatic genome editing, we generated an acute hepatic Cyp2c70 knockout mouse model (Cyp2c70ako) to clarify the role of CYP2C70 in BA metabolism in vivo and evaluate whether its activity modulates effects of pharmacologic FXR activation on cholesterol homeostasis. In Cyp2c70ako mice, chenodeoxycholic acid (CDCA) increased at the expense of βMCA, resulting in a more hydrophobic human-like BA pool. Tracer studies demonstrated that, in vivo, CYP2C70 catalyzes the formation of βMCA primarily by sequential 6β-hydroxylation and C7-epimerization of CDCA, generating αMCA as an intermediate metabolite. Physiologically, the humanized BA composition in Cyp2c70ako mice blunted the stimulation of fecal cholesterol disposal in response to FXR activation compared with WT mice, predominantly due to reduced stimulation of transintestinal cholesterol excretion. Thus, deletion of hepatic Cyp2c70 in adult mice translates into a human-like BA pool composition and impacts the response to pharmacologic FXR activation. This Cyp2c70ako mouse model may be a useful tool for future studies of BA signaling and metabolism that informs human disease development and treatment.




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Obesity Reduces Maternal Blood Triglyceride Concentrations by Reducing Angiopoietin-like Protein 4 Expression in Mice

To ensure fetal lipid supply, maternal blood triglyceride (TG) concentrations are robustly elevated during pregnancy. Interestingly, a lower increase in maternal blood TG concentrations has been observed in some obese mothers. We have shown that high-fat (HF) feeding during pregnancy significantly reduces maternal blood TG levels. Therefore, we performed this study to investigate if and how obesity alters maternal blood TG levels. Maternal obesity was established by prepregnant HF feeding (ppHF), which avoided the dietary effect during pregnancy. We found that maternal blood TG concentrations in ppHF dams were not only remarkably lower than control dams, but the TG peak occurred earlier during gestation. Hepatic TG production and intestinal TG absorption were unchanged in ppHF dams, but systemic lipoprotein lipase (LPL) activity was increased, suggesting that increased blood TG clearance contributes to the decreased blood TG concentrations in ppHF dams. Although significantly higher levels of UCP1 protein were observed in iBAT of ppHF dams, Ucp1 gene deletion did not restore blood TG concentrations in ppHF dams. Expression of the angiopoietin-like protein 4 (ANGPTL4), a potent endogenous LPL inhibitor, was significantly increased during pregnancy. However, the pregnancy-induced elevation of blood TG was almost abolished in Angptl4-/- dams. Compared with control dams, Angptl4 mRNA levels were significantly lower in iBAT, gWAT and livers of ppHF dams. Importantly, ectopic overexpression of ANGPTL4 restored maternal blood TG concentrations in ppHF dams. Together, these results indicate that ANGPTL4 plays a vital role in increasing maternal blood TG concentrations during pregnancy. Obesity impairs the rise of maternal blood TG concentrations by reducing ANGPTL4 expression in mice.