Things will change forever, nods ex-Facebooker Alex Stamos

Video conferencing software biz Zoom has bought Keybase in a surprise move just weeks after hiring Facebook's one-time CSO.…

'Extra time for you to test,' you lucky, lucky developers

Google has applied the brakes to Android 11, pushing things out by a month as it grapples with a world that is much changed since planning for the release began.…

Despite you know what, little evidence of a rush to new racks

Equinix has posted its Q1 FY2020 results for the period ending March 31st, along with some interesting insights into how the COVID-19 pandemic has impacted data centre consumption.…

Hayabusa 2 expected to return with out-of-this-world material in December

Video Close-up footage of asteroid Ryugu, taken by the Hayabusa 2 spacecraft as it touched down to retrieve a sample, reveals the near-Earth object’s surface may have been torched by the Sun as its orbit changed over time.…

Zero-click remote-code exec hole found by Googler, updates emitted

Samsung has patched a serious security hole in its smartphones that can be exploited by maliciously crafted text messages to hijack devices.…

Компания Xiaomi осенью прошлого года выпустила смартфон Mi Note 10, но обновление Android 10 добралось до аппарата только сейчас.

По словам производителя, Flyme 8.1, по сравнению с Flyme 8, получила более 300 улучшений и оптимизаций.

Every house resident understands how quickly she or he can build up a lot of unwanted junk, broken items as well as simply simple rubbish. For those who often tend to hoard, or delay disposal of garbage, this buildup can… Continue Reading →

OED Word of the Day: time-ridden, adj. Afflicted by the effects of time; time-worn

“Even after weeks of staying home, my kids are just not interested in all the stuff we have. Let’s be honest. If a toy isn’t getting any action amid this distraction-free, stuck-at-home living, chances are it’s never getting touched again.” Liz Russell figures out what really engages and changes kids during the quarantine, and will […]

“The most difficult part was persuading our children that they had the freedom to make anything they wanted,” writes mom Anam Ahmed at Let Grow. (Click here!) …Like most kids, my children live prescheduled lives (at least they did in “the time before”). At school, someone tells them when to play outside and when to […]

I realize that sounds kinda nuts — why are we asking PARENTS to show us their KIDS being independent? Who, after all, is better at making videos? Mom or little Ava (who’s 5)? But legally we can’t ask anyone under 13 to do anything. So go document your children doing something new on their own, […]

“When I was 17, I was in a serious accident and had to be home for months. Looking out at our boring backyard, I daydreamed a plan for my life. It became a blueprint.” So writes Holly Korbey in a lovely piece at Let Grow. There are different kinds of daydreaming, of course, and some don’t […]

What expression does — did — your mom use all the time? What skill did you learn from her?  What does (or did) she encourage you to do? These are great questions for any mom and child, whether the kid is 5 or 50. And if you click here, you can print out a very […]

At least for some kids, yes, being flung from the stress of a super-structured, super-supervised existence is having a calming, life-expanding effect. I discuss this amazing phenom in this Big Think article, including six short essays by kids themselves, and also in this interview with Bored Panda,  the  pop culture site, where I note that […]

Parents, kids: Fear not the silica gel pack. Sure it says DO NOT EAT and THROW AWAY. But you should only follow one of those rules.    Instead, save the packs and use them a whole lot of ways: Place them on the car dashboard by the windshield to keep it from fogging up.   […]

This flow chart, created by University of Virginia Psychology Professors Jim Coan and Daniel Willingham, is just plain terrific. “Could a child do this alone?” asks the chart. Then let ’em! “Could a child do this with some instruction?” Then let ’em. Etc. etc. Check it out — print it out! — by clicking here. […]

The National Highway Traffic Safety Administration (NHTSA) finds Tesla's Autopilot cuts crashes by 40%. How cool is that? Autonomous vehicles are going to cause a huge decline in accidents and deaths. Even short of autonomous vehicles, when you get your next car try to get one that supports automatic braking on imminent collision detection. You could get a large fraction of the collision avoidance benefit at a much lower cost today. Check out Insurance Institute for Highway Safety ratings of collision avoidance systems in current cars. Watch a Tesla react to a crash in front of it: Watch a Tesla avoid hitting a reckless driver: A recent analysis finds that autonomous vehicles will allow 2 million disabled people to get...

Stupidity repeats itself!

A man walks in a bar with his pet monkey. He sits down and orders a drink, meanwhile the monkey is running around all over the place and jumps up on a pool table. He grabs the 8 ball, shoves it into his mouth and swallows it hole. “Holy crap!” says the bartender, completely livid. […]

The post The Not So Stupid Monkey appeared first on Funny & Jokes.

We previously established that global deletion of the enhancer of trithorax and polycomb (ETP) gene, Asxl2, prevents weight gain. Because proinflammatory macrophages recruited to adipose tissue are central to the metabolic complications of obesity, we explored the role of ASXL2 in myeloid lineage cells. Unexpectedly, mice without Asxl2 only in myeloid cells (Asxl2ΔLysM) were completely resistant to diet-induced weight gain and metabolically normal despite increased food intake, comparable activity, and equivalent fecal fat. Asxl2ΔLysM mice resisted HFD-induced adipose tissue macrophage infiltration and inflammatory cytokine gene expression. Energy expenditure and brown adipose tissue metabolism in Asxl2ΔLysM mice were protected from the suppressive effects of HFD, a phenomenon associated with relatively increased catecholamines likely due to their suppressed degradation by macrophages. White adipose tissue of HFD-fed Asxl2ΔLysM mice also exhibited none of the pathological remodeling extant in their control counterparts. Suppression of macrophage Asxl2 expression, via nanoparticle-based siRNA delivery, prevented HFD-induced obesity. Thus, ASXL2 controlled the response of macrophages to dietary factors to regulate metabolic homeostasis, suggesting modulation of the cells’ inflammatory phenotype may impact obesity and its complications.

Levodopa-induced dyskinesia (LID) poses a significant health care challenge for Parkinson’s disease (PD) patients. Amantadine is currently the only drug proven to alleviate LID. Although its efficacy in treating LID is widely assumed to be mediated by blockade of N-methyl-D-aspartate (NMDA) glutamate receptors, our experiments demonstrate that at therapeutically relevant concentrations, amantadine preferentially blocks inward-rectifying K+ channel type 2 (Kir2) channels in striatal spiny projection neurons (SPNs) — not NMDA receptors. In so doing, amantadine enhances dendritic integration of excitatory synaptic potentials in SPNs and enhances — not antagonizes — the induction of long-term potentiation (LTP) at excitatory, axospinous synapses. Taken together, our studies suggest that the alleviation of LID in PD patients is mediated by diminishing the disparity in the excitability of direct- and indirect-pathway SPNs in the on state, rather than by disrupting LTP induction. This insight points to a pharmacological approach that could be used to effectively ameliorate LID and improve the quality of life for PD patients.

Whether mutations in cancer driver genes directly affect cancer immune phenotype and T cell immunity remains a standing question. ARID1A is a core member of the polymorphic BRG/BRM-associated factor chromatin remodeling complex. ARID1A mutations occur in human cancers and drive cancer development. Here, we studied the molecular, cellular, and clinical impact of ARID1A aberrations on cancer immunity. We demonstrated that ARID1A aberrations resulted in limited chromatin accessibility to IFN-responsive genes, impaired IFN gene expression, anemic T cell tumor infiltration, poor tumor immunity, and shortened host survival in many human cancer histologies and in murine cancer models. Impaired IFN signaling was associated with poor immunotherapy response. Mechanistically, ARID1A interacted with EZH2 via its carboxyl terminal and antagonized EZH2-mediated IFN responsiveness. Thus, the interaction between ARID1A and EZH2 defines cancer IFN responsiveness and immune evasion. Our work indicates that cancer epigenetic driver mutations can shape cancer immune phenotype and immunotherapy.

Tumor-associated peptide–human leukocyte antigen complexes (pHLAs) represent the largest pool of cell surface–expressed cancer-specific epitopes, making them attractive targets for cancer therapies. Soluble bispecific molecules that incorporate an anti-CD3 effector function are being developed to redirect T cells against these targets using 2 different approaches. The first achieves pHLA recognition via affinity-enhanced versions of natural TCRs (e.g., immune-mobilizing monoclonal T cell receptors against cancer [ImmTAC] molecules), whereas the second harnesses an antibody-based format (TCR-mimic antibodies). For both classes of reagent, target specificity is vital, considering the vast universe of potential pHLA molecules that can be presented on healthy cells. Here, we made use of structural, biochemical, and computational approaches to investigate the molecular rules underpinning the reactivity patterns of pHLA-targeting bispecifics. We demonstrate that affinity-enhanced TCRs engage pHLA using a comparatively broad and balanced energetic footprint, with interactions distributed over several HLA and peptide side chains. As ImmTAC molecules, these TCRs also retained a greater degree of pHLA selectivity, with less off-target activity in cellular assays. Conversely, TCR-mimic antibodies tended to exhibit binding modes focused more toward hot spots on the HLA surface and exhibited a greater degree of crossreactivity. Our findings extend our understanding of the basic principles that underpin pHLA selectivity and exemplify a number of molecular approaches that can be used to probe the specificity of pHLA-targeting molecules, aiding the development of future reagents.

Chronic pancreatitis (CP) is considered an irreversible fibroinflammatory pancreatic disease. Despite numerous animal model studies, questions remain about local immune characteristics in human CP. We profiled pancreatic immune cell characteristics in control organ donors and CP patients including those with hereditary and idiopathic CP undergoing total pancreatectomy with islet autotransplantation. Flow cytometric analysis revealed a significant increase in the frequency of CD68+ macrophages in idiopathic CP. In contrast, hereditary CP samples showed a significant increase in CD3+ T cell frequency, which prompted us to investigate the T cell receptor β (TCRβ) repertoire in the CP and control groups. TCRβ sequencing revealed a significant increase in TCRβ repertoire diversity and reduced clonality in both CP groups versus controls. Interestingly, we observed differences in Vβ-Jβ gene family usage between hereditary and idiopathic CP and a positive correlation of TCRβ rearrangements with disease severity scores. Immunophenotyping analyses in hereditary and idiopathic CP pancreases indicate differences in innate and adaptive immune responses, which highlights differences in immunopathogenic mechanisms of disease among subtypes of CP. TCR repertoire analysis further suggests a role for specific T cell responses in hereditary versus idiopathic CP pathogenesis, providing insights into immune responses associated with human CP.

Hepatocellular carcinoma (HCC) is clearly age-related and represents one of the deadliest cancer types worldwide. As a result of globally increasing risk factors including metabolic disorders, the incidence rates of HCC are still rising. However, the molecular hallmarks of HCC remain poorly understood. Neuropeptide Y (NPY) and NPY receptors represent a highly conserved, stress-activated system involved in diverse cancer-related hallmarks including aging and metabolic alterations, but its impact on liver cancer had been unclear. Here, we observed increased expression of NPY5 receptor (Y5R) in HCC, which correlated with tumor growth and survival. Furthermore, we found that its ligand NPY was secreted by peritumorous hepatocytes. Hepatocyte-derived NPY promoted HCC progression by Y5R activation. TGF-β1 was identified as a regulator of NPY in hepatocytes and induced Y5R in invasive cancer cells. Moreover, NPY conversion by dipeptidylpeptidase 4 (DPP4) augmented Y5R activation and function in liver cancer. The TGF-β/NPY/Y5R axis and DPP4 represent attractive therapeutic targets for controlling liver cancer progression.

BACKGROUND Neurofibroma/schwannoma hybrid nerve sheath tumors (N/S HNSTs) are neoplasms associated with larger nerves that occur sporadically and in the context of schwannomatosis or neurofibromatosis type 2 or 1. Clinical management of N/S HNSTs is challenging, especially for large tumors, and established systemic treatments are lacking.METHODS We used next-generation sequencing and array-based DNA methylation profiling to determine the clinically actionable genomic and epigenomic landscapes of N/S HNSTs.RESULTS Whole-exome sequencing within a precision oncology program identified an activating mutation (p.Asp769Tyr) in the catalytic domain of the ERBB2 receptor tyrosine kinase in a patient with schwannomatosis-associated N/S HNST, and targeted treatment with the small-molecule ERBB inhibitor lapatinib led to prolonged clinical benefit and a lasting radiographic and metabolic response. Analysis of a multicenter validation cohort revealed recurrent ERBB2 mutations (p.Leu755Ser, p.Asp769Tyr, p.Val777Leu) in N/S HNSTs occurring in patients who met diagnostic criteria for sporadic schwannomatosis (3 of 7 patients), but not in N/S HNSTs arising in the context of neurofibromatosis (6 patients) or outside a tumor syndrome (1 patient), and showed that ERBB2-mutant N/S HNSTs cluster in a distinct subgroup of peripheral nerve sheath tumors based on genome-wide DNA methylation patterns.CONCLUSION These findings uncover a key biological feature of N/S HNSTs that may have important diagnostic and therapeutic implications.FUNDING This work was supported by grant H021 from DKFZ-HIPO, the University Cancer Center Frankfurt, and the Frankfurt Research Funding Clinician Scientist Program.

BACKGROUND Preclinical experiments have shown that donor blood cells, modified in vitro by an alkylating agent (modified immune cells [MICs]), induced long-term specific immunosuppression against the allogeneic donor.METHODS In this phase I trial, patients received either 1.5 × 106 MICs per kg BW on day –2 (n = 3, group A), or 1.5 × 108 MICs per kg BW on day –2 (n = 3, group B) or day –7 (n = 4, group C) before living donor kidney transplantation in addition to post-transplantation immunosuppression. The primary outcome measure was the frequency of adverse events (AEs) until day 30 (study phase) with follow-up out to day 360.RESULTS MIC infusions were extremely well tolerated. During the study phase, 10 treated patients experienced a total of 69 AEs that were unlikely to be related or not related to MIC infusion. No donor-specific human leukocyte antigen Abs or rejection episodes were noted, even though the patients received up to 1.3 × 1010 donor mononuclear cells before transplantation. Group C patients with low immunosuppression during follow-up showed no in vitro reactivity against stimulatory donor blood cells on day 360, whereas reactivity against third-party cells was still preserved. Frequencies of CD19+CD24hiCD38hi transitional B lymphocytes (Bregs) increased from a median of 6% before MIC infusion to 20% on day 180, which was 19- and 68-fold higher, respectively, than in 2 independent cohorts of transplanted controls. The majority of Bregs produced the immunosuppressive cytokine IL-10. MIC-treated patients showed the Immune Tolerance Network operational tolerance signature.CONCLUSION MIC administration was safe and could be a future tool for the targeted induction of tolerogenic Bregs.TRIAL REGISTRATION EudraCT number: 2014-002086-30; ClinicalTrials.gov identifier: NCT02560220FUNDING Federal Ministry for Economic Affairs and Technology, Berlin, Germany, and TolerogenixX GmbH, Heidelberg, Germany.

Colitis caused by Clostridium difficile infection is a growing cause of human morbidity and mortality, especially after antibiotic use in health care settings. The natural immunity of newborn infants and protective host immune mediators against C. difficile infection are not fully understood, with data suggesting that inflammation can be either protective or pathogenic. Here, we show an essential role for IL-17A produced by γδ T cells in host defense against C. difficile infection. Fecal extracts from children with C. difficile infection showed increased IL-17A and T cell receptor γ chain expression, and IL-17 production by intestinal γδ T cells was efficiently induced after infection in mice. C. difficile–induced tissue inflammation and mortality were markedly increased in mice deficient in IL-17A or γδ T cells. Neonatal mice, with naturally expanded RORγt+ γδ T cells poised for IL-17 production were resistant to C. difficile infection, whereas elimination of γδ T cells or IL-17A each efficiently overturned neonatal resistance against infection. These results reveal an expanded role for IL-17–producing γδ T cells in neonatal host defense against infection and provide a mechanistic explanation for the clinically observed resistance of infants to C. difficile colitis.

The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide. Although gene-environment interactions have been implicated in the etiology of several disorders, the impact of paternal and/or maternal metabolic syndrome on the clinical phenotypes of offspring and the underlying genetic and epigenetic contributors of NAFLD have not been fully explored. To this end, we used the liver-specific insulin receptor knockout (LIRKO) mouse, a unique nondietary model manifesting 3 hallmarks that confer high risk for the development of NAFLD: hyperglycemia, insulin resistance, and dyslipidemia. We report that parental metabolic syndrome epigenetically reprograms members of the TGF-β family, including neuronal regeneration–related protein (NREP) and growth differentiation factor 15 (GDF15). NREP and GDF15 modulate the expression of several genes involved in the regulation of hepatic lipid metabolism. In particular, NREP downregulation increases the protein abundance of 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) and ATP-citrate lyase (ACLY) in a TGF-β receptor/PI3K/protein kinase B–dependent manner, to regulate hepatic acetyl-CoA and cholesterol synthesis. Reduced hepatic expression of NREP in patients with NAFLD and substantial correlations between low serum NREP levels and the presence of steatosis and nonalcoholic steatohepatitis highlight the clinical translational relevance of our findings in the context of recent preclinical trials implicating ACLY in NAFLD progression.

Hypoxia-inducible factor (HIF) is strikingly upregulated in many types of cancer, and there is great interest in applying inhibitors of HIF as anticancer therapeutics. The most advanced of these are small molecules that target the HIF-2 isoform through binding the PAS-B domain of HIF-2α. These molecules are undergoing clinical trials with promising results in renal and other cancers where HIF-2 is considered to be driving growth. Nevertheless, a central question remains as to whether such inhibitors affect physiological responses to hypoxia at relevant doses. Here, we show that pharmacological HIF-2α inhibition with PT2385, at doses similar to those reported to inhibit tumor growth, rapidly impaired ventilatory responses to hypoxia, abrogating both ventilatory acclimatization and carotid body cell proliferative responses to sustained hypoxia. Mice carrying a HIF-2α PAS-B S305M mutation that disrupts PT2385 binding, but not dimerization with HIF-1β, did not respond to PT2385, indicating that these effects are on-target. Furthermore, the finding of a hypomorphic ventilatory phenotype in untreated HIF-2α S305M mutant mice suggests a function for the HIF-2α PAS-B domain beyond heterodimerization with HIF-1β. Although PT2385 was well tolerated, the findings indicate the need for caution in patients who are dependent on hypoxic ventilatory drive.

The editors of JCI and JCI Insight are revisiting our editorial processes in light of the strain that the COVID-19 pandemic places on the worldwide scientific community. Here, we discuss adjustments to our decision framework in light of restrictions placed on laboratory working conditions for many of our authors.

Lipid-rich myelin forms electrically insulating, axon-wrapping multilayers that are essential for neural function, and mature myelin is traditionally considered metabolically inert. Surprisingly, we discovered that mature myelin lipids undergo rapid turnover, and quaking (Qki) is a major regulator of myelin lipid homeostasis. Oligodendrocyte-specific Qki depletion, without affecting oligodendrocyte survival, resulted in rapid demyelination, within 1 week, and gradually neurological deficits in adult mice. Myelin lipids, especially the monounsaturated fatty acids and very-long-chain fatty acids, were dramatically reduced by Qki depletion, whereas the major myelin proteins remained intact, and the demyelinating phenotypes of Qki-depleted mice were alleviated by a high-fat diet. Mechanistically, Qki serves as a coactivator of the PPARβ-RXRα complex, which controls the transcription of lipid-metabolism genes, particularly those involved in fatty acid desaturation and elongation. Treatment of Qki-depleted mice with PPARβ/RXR agonists significantly alleviated neurological disability and extended survival durations. Furthermore, a subset of lesions from patients with primary progressive multiple sclerosis were characterized by preferential reductions in myelin lipid contents, activities of various lipid metabolism pathways, and expression level of QKI-5 in human oligodendrocytes. Together, our results demonstrate that continuous lipid synthesis is indispensable for mature myelin maintenance and highlight an underappreciated role of lipid metabolism in demyelinating diseases.

Как сообщают источники, компания Apple ведет переговоры со своим партнером GIS о том, чтобы обновить дисплеи в следующих поколениях iPhone. В частности, речь идет об установке в экраны смартфонов ульт...

You can grab four steamy and sweet MM holiday romances in one box set for a major discount! This new collection is only $6.99 or you can borrow it in KU. I’m also very excited that these novellas are available in print for the first time! ???? Buy the ebook box set exclusively at Amazon […]

“Looking for a fun and sweet holiday romance with dual POV, some heat, a humorous caper, and a wonderful HEA ending? Look no further!” ~ Gay Book Reviews Fa-la-la-la-la! My new holiday romance is now available to buy or borrow in KU! You’ve got fake boyfriends, bisexual exploration, found family, a single dad in desperate need […]

Dan Avidan, after years of dancing around topic of being a furry and which he would be, seems to have settled on his fursona of a cyberpunk wolf in a recently released music video. The video features animal characters with trans-humanist enhancements. The coloration has a signature bleed of 80s style animation.

The story portrays a pack of wolves seeking vengeance against a stag mogul after having their kin slaughtered at his hand. The style of animation and situation has some striking similarities to that of Caravan Palace's music video for Lone Digger.

This was brought to my attention by Majira Strawberry who asked why know one was talking about it. The answer to that in my case is object pertinence.

For those who are fans of cyberpunk and animation this is certainly worth the watch.