Sign in

Sharad Kumar

@molregulation.bsky.social
72 followers 58 following 27 posts

Biomedical scientist passionate about discovery research

PostsRepliesMedia
Sharad Kumar @molregulation.bsky.social · 18/04/2026
A new perspective on Caspase-2, liver polyploidy and age-related liver cancer. www.sciexplor.com/articles/EXO...
sciexplor.com
The caspase-2 paradox in liver polyploidy and cancer risk
Caspase-2 is a key genome-surveillance protease that functions to kill or arrest cells with abnormal chromosome content, via PIDDosome-dependent and -independent mechanisms. However, this surveillance...
000
Reposted by Sharad Kumar
cddpress.bsky.social @cddpress.bsky.social · 10/04/2026
“HECT ubiquitin ligases as regulators of inflammatory signalling” In this timely and well-organised review, Prof. Sharad Kumar and colleagues provide insights into how ubiquitin signalling shapes inflammation and disease. ⤵️ www.nature.com/articles/s41...
nature.com
021
Reposted by Sharad Kumar
Sharad Kumar @molregulation.bsky.social · 20/03/2026
The E3-ome gene-centric compendium reveals the human E3 ligase landscape: Cell www.cell.com/cell/fulltex...
cell.com
The E3-ome gene-centric compendium reveals the human E3 ligase landscape
The E3-ome defines the human repertoire of ubiquitin E3 ligases, creating a unified resource that maps their diversity across the ubiquitin and ubiquitin-like systems. By consolidating fragmented know...
012
Reposted by Sharad Kumar
Sharad Kumar @molregulation.bsky.social · 09/03/2026
onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Increased Urinary Extracellular Vesicles and Reduced Expression of NEDD4L in Patients With Type 2 Diabetes and Diabetic Nephropathy
Introduction Diabetic nephropathy (DN) is a leading cause of chronic kidney disease. Current diagnosis requires the persistent presence of albuminuria and/or reduction in estimated glomerular filtra...
001
Sharad Kumar @molregulation.bsky.social · 20/03/2026
The E3-ome gene-centric compendium reveals the human E3 ligase landscape: Cell www.cell.com/cell/fulltex...
cell.com
The E3-ome gene-centric compendium reveals the human E3 ligase landscape
The E3-ome defines the human repertoire of ubiquitin E3 ligases, creating a unified resource that maps their diversity across the ubiquitin and ubiquitin-like systems. By consolidating fragmented know...
012
Sharad Kumar @molregulation.bsky.social · 09/03/2026
onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Increased Urinary Extracellular Vesicles and Reduced Expression of NEDD4L in Patients With Type 2 Diabetes and Diabetic Nephropathy
Introduction Diabetic nephropathy (DN) is a leading cause of chronic kidney disease. Current diagnosis requires the persistent presence of albuminuria and/or reduction in estimated glomerular filtra...
001
Sharad Kumar @molregulation.bsky.social · 13/01/2026
Hidden cancer risk behind fatty liver disease targets | EurekAlert! www.eurekalert.org/news-release...
eurekalert.org
Hidden cancer risk behind fatty liver disease targets
Scientists have discovered that blocking a key cellular enzyme thought to protect against fatty liver disease may instead increase the risk of chronic liver damage and cancer as we age.
000
Sharad Kumar @molregulation.bsky.social · 11/01/2026
Caspase-2 deficiency drives pathogenic liver polyploidy and increases age-associated hepatocellular carcinoma in mice | Science Advances www.science.org/doi/full/10....
science.org
Caspase-2 deficiency drives pathogenic liver polyploidy and increases age-associated hepatocellular carcinoma in mice
Caspase-2 inactivation promotes pathogenic hepatocyte polyploidy and age-related liver cancer.
041
Reposted by Sharad Kumar
Sharad Kumar @molregulation.bsky.social · 02/01/2026
Great to see this work, led by Loretta Dorstyn, with contributions from many colleagues and funded by NHMRC now out. Our first publication of 2026 and from the new Adelaide University. www.science.org/doi/10.1126/...
science.org
Caspase-2 deficiency drives pathogenic liver polyploidy and increases age-associated hepatocellular carcinoma in mice
Caspase-2 inactivation promotes pathogenic hepatocyte polyploidy and age-related liver cancer.
052
Sharad Kumar @molregulation.bsky.social · 02/01/2026
Great to see this work, led by Loretta Dorstyn, with contributions from many colleagues and funded by NHMRC now out. Our first publication of 2026 and from the new Adelaide University. www.science.org/doi/10.1126/...
science.org
Caspase-2 deficiency drives pathogenic liver polyploidy and increases age-associated hepatocellular carcinoma in mice
Caspase-2 inactivation promotes pathogenic hepatocyte polyploidy and age-related liver cancer.
052
Reposted by Sharad Kumar
Waggoner Lab @labwaggoner.bsky.social · 02/01/2026
Caspase-2 inactivation promotes pathogenic hepatocyte polyploidy and age-related liver cancer www.science.org/doi/10.1126/... @molregulation.bsky.social
021
Reposted by Sharad Kumar
David Ho @davidho.bsky.social · 19/09/2025
Of all the stupid things that this regime has done, this is right up near the top. Postdoctoral researchers come to the US on H-1B visas. This will further destroy the US science enterprise. Stupid stupid stupid.
cbsnews.com
Trump administration to add $100,000 fee for H-1B visas
The Trump administration is targeting a visa widely used by tech companies and other employers to hire foreign workers.
431218399
Sharad Kumar @molregulation.bsky.social · 26/08/2025
Locals in Adelaide are now in full bloom 😊
020
Sharad Kumar @molregulation.bsky.social · 22/08/2025
Very cool study: LYVAC/PDZD8 is a lysosomal vacuolator | Science www.science.org/doi/10.1126/...
science.org
LYVAC/PDZD8 is a lysosomal vacuolator
Lysosomal vacuolation is commonly found in many pathophysiological conditions, but its molecular mechanisms and functions remain largely unknown. Here, we show that the endoplasmic reticulum (ER)–anch...
010
Sharad Kumar @molregulation.bsky.social · 22/08/2025
www.nature.com/articles/s41... New publication from our lab.
nature.com
Phospholipid scramblase 1 (PLSCR1) is a novel substrate of NEDD4-2 (NEDD4L) mediated ubiquitination - Cell Death Discovery
Cell Death Discovery - Phospholipid scramblase 1 (PLSCR1) is a novel substrate of NEDD4-2 (NEDD4L) mediated ubiquitination
030
Sharad Kumar @molregulation.bsky.social · 13/08/2025
Shades of Spring in Adelaide: frost and Sakura 😊
010
Reposted by Sharad Kumar
Australasian Cell Death Society (ACDS) @auscelldeathsoc.bsky.social · 31/07/2025
🧬 New paper alert! @molregulation.bsky.social’s team reveals a paradox: Nedd4-2 deficiency triggers kidney injury but protects against high blood glucose in diabetes. Fascinating twist! 🔄
nature.com
Nedd4-2 ablation in kidney improves glycaemic control in diabetic mice - Cell Death & Disease
Cell Death & Disease - Nedd4-2 ablation in kidney improves glycaemic control in diabetic mice
041
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 05/07/2025
New organ clock data support the anti-aging benefits of estrogen for postmenopausal women. Reviewed here in context with previous and other recent reports. erictopol.substack.com/p/new-anti-a...
Organ clocks for post-menopausal women taking estrogen or not taking estrogen
1628156
Reposted by Sharad Kumar
Nature @nature.com · 08/05/2025
An analysis shows that large fractions of future generations will be exposed to extreme climate events that would occur only once every 10,000 years in the absence of global warming go.nature.com/43lhNbO
go.nature.com
Climate risk for younger generations is set to soar
An analysis shows that large fractions of future generations will be exposed to extreme climate events that would occur only once every 10,000 years in the absence of global warming.
14329
Reposted by Sharad Kumar
Nature @nature.com · 12/04/2025
Tiger numbers in India are starting to rebound after decades of being perilously low. This recovery offers lessons for conserving other rare animals go.nature.com/3EpQfIA
go.nature.com
Tiger turnaround as populations grow in India
Nature - Tiger numbers in India are starting to rebound after decades of being perilously low. This recovery offers lessons for conserving other rare animals.
013926
Reposted by Sharad Kumar
Waggoner Lab @labwaggoner.bsky.social · 09/04/2025
Spatial multi-omics reveals cell-type-specific nuclear compartments @nature.com www.nature.com/articles/s41...
1196
Reposted by Sharad Kumar
Nature @nature.com · 09/04/2025
Nature research paper: Timing and trajectory of BCR::ABL1-driven chronic myeloid leukaemia go.nature.com/4j2WTDZ
go.nature.com
Timing and trajectory of BCR::ABL1-driven chronic myeloid leukaemia - Nature
Explosive growth is attributed to the BCR::ABL1 gene 3–14 years before diagnosis of chronic myeloid leukaemia, highlighting the oncogenic potency of gene fusion and the slow and sequential trajectories of most other cancers.
0216
Reposted by Sharad Kumar
Nature @nature.com · 09/04/2025
Studies of researchers globally suggest there is a mental-health crisis in academia go.nature.com/3RNAbmZ
go.nature.com
A mental-health crisis plagues PhDs — these evidence-led initiatives offer help
Communities of researchers worldwide are taking on the toxic research cultures that drive poor psychological health among academics.
16025
Reposted by Sharad Kumar
Nature @nature.com · 09/04/2025
“I’ve never thought that this would be accomplished in my lifetime” Researchers have successfully sequenced the complete genomes of six ape species go.nature.com/4j9jE9k
go.nature.com
What makes us human? Milestone ape genomes promise clues
DNA sequences for the chimpanzee, orangutans and more will help scientists to determine what sets humans apart from other apes.
27410
Reposted by Sharad Kumar
Nature @nature.com · 09/04/2025
Researchers have created the largest and most detailed wiring diagram of a mammalian brain to date, by mapping cells in a cubic millimetre of a mouse’s brain tissue go.nature.com/4cu68dN
go.nature.com
Biggest brain map ever details huge number of neurons and their activity
3D reconstruction is the first to overlay neuronal activity on a large-scale map of brain cells.
17211
Reposted by Sharad Kumar
Waggoner Lab @labwaggoner.bsky.social · 09/04/2025
Cancer vulnerabilities exposed by finding interactions among DNA repair factors @nature.com @jcornlab.bsky.social www.nature.com/articles/s41... www.nature.com/articles/d41...
041
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 24/03/2025
Of >105,000 participants with 30-year follow-up, only 9.3% achieved healthy aging (age 70, w/o any chronic diseases). Their diet was significantly associated with this outcome. @naturemedicine.bsky.social
20453112
Sharad Kumar @molregulation.bsky.social · 17/03/2025
Overseas universities see opportunity in U.S. ‘brain drain’ | Science | AAAS www.science.org/content/arti...
science.org
Overseas universities see opportunity in U.S. ‘brain drain’
But many U.S.-based scientists seeking to leave may struggle to find positions in countries grappling with funding issues of their own
010
Reposted by Sharad Kumar
Nature @nature.com · 15/03/2025
Some scientists in the United States have told Nature that they are considering leaving the country in the wake of widespread disruption to research brought in by the Trump administration Are you thinking about leaving? go.nature.com/4bMGd0J
go.nature.com
These frustrated scientists want to leave the United States – do you? Take Nature’s poll
Nature - In the wake of the Trump administration’s funding freezes and job cuts, some researchers are planning their next move.
1121554
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 14/03/2025
The potential of senolytics for treating low back pain, removing senescent cells that are implicated, as seen ex vivo and in the mouse model. www.science.org/doi/10.1126/...
science.org
Senolytic treatment for low back pain
Senolytics drugs can reduce back pain by removing senescent cells from the intervertebral discs and spinal cord.
28618
Reposted by Sharad Kumar
Sherry Pagoto, PhD @drsherrypagoto.bsky.social · 12/03/2025
New report shows that NIH grants fueled $95 billion in economic activity and 407,782 jobs in 2024. That's not to mention the countless lives that biomedical research has saved. Show me a better investment than that. www.forbes.com/sites/michae...
forbes.com
NIH Grants Fueled $95 Billion In FY 2024 Economic Activity, Finds New Report
National Institutes of Health grants generated almost $95 billion in economic activity nationwide in FY 2024 according to a new report by United for Medical Research.
2320231138
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 12/03/2025
How does SARS-CoV-2 lead to the multisystem inflammatory syndrome in children, a rare, potentially fatal condition? www.nature.com/articles/s41... High levels of TGFβ interfere with the child's response to control Epstein Barr virus, leading to its reactivation and severe inflammation @nature.com
nature.com
TGFβ links EBV to multisystem inflammatory syndrome in children - Nature
Multisystem inflammatory syndrome following SARS-CoV-2 infection results from increased serum levels of TGFβ, which impairs the reactivation of virus-specific T cells.
221666
Reposted by Sharad Kumar
Sharon 🪳🌹 @sharonk.bsky.social · 12/03/2025
next Canadian government should think of boosting research funding up here and trying to grab as many American postdocs and researchers as possible
607165402173
Reposted by Sharad Kumar
Nature @nature.com · 12/03/2025
Nature research paper: MYC ecDNA promotes intratumour heterogeneity and plasticity in PDAC go.nature.com/41IPJwX
go.nature.com
MYC ecDNA promotes intratumour heterogeneity and plasticity in PDAC - Nature
In a model of pancreatic ductal adenocarcinoma, extrachromosomal DNAs are shown to be a source of high-level focal amplification driving MYC heterogeneity and phenotypic adaptation.
13311
Reposted by Sharad Kumar
Jenny Sinclair @jsresearchpro.bsky.social · 10/03/2025
Australia: Shergold says ARC funding scheme redesign should set the course for decades ahead (free to read): www.researchprofessionalnews.com/rr-news-aust...
researchprofessionalnews.com
ARC redesign ‘will set funding direction for next two decades’ - Research Professional News
Chair explains why Australian Research Council is rejecting defined splits between basic and applied funding
013
Sharad Kumar @molregulation.bsky.social · 10/03/2025
“NIH-funded research contributed to 354 of 356 drugs approved by the US Food and Drug Administration in 2010–19.”
011
Reposted by Sharad Kumar
Nature @nature.com · 10/03/2025
Abrupt cuts by the Trump administration to the US National Institutes of Health threaten progress in medical research globally go.nature.com/3FbZP1N
go.nature.com
How the NIH dominates the world’s health research — in charts
Abrupt cuts by the Trump administration to the US National Institutes of Health threaten progress in medical research globally.
48942
Reposted by Sharad Kumar
Australasian Cell Death Society (ACDS) @auscelldeathsoc.bsky.social · 07/03/2025
(1/5) Hello, Bluesky community! We're thrilled to be here. 🌟 We are the ACDS, your hub for connecting cell death researchers across Australasia and beyond. We're here to foster a community that embodies scientific integrity, collaboration and communicates science across the globe!
185
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 06/03/2025
GLP-1 drugs association with reduced risk of blood cancers (leukemias and lymphomas) jamanetwork.com/journals/jam...
415727
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 06/03/2025
PIEZO2 ion channels come to the fore yet again, now as a key sensor for adipose tissue www.cell.com/cell-metabol... @ardemp.bskyverified.social @scripps.edu
cell.com
A key role of PIEZO2 mechanosensitive ion channel in adipose sensory innervation
Wang et al. identified that the mechanoreceptor PIEZO2 is abundantly expressed in fat-innervating sensory neurons and plays a crucial role in mediating the adipose afferent pathway.
1477
Reposted by Sharad Kumar
Waggoner Lab @labwaggoner.bsky.social · 05/03/2025
Review @natrevimmunol.bsky.social New insights into the noncanonical inflammasome point to caspase-4 as a druggable target www.nature.com/articles/s41...
001
Reposted by Sharad Kumar
Waggoner Lab @labwaggoner.bsky.social · 05/03/2025
Microbiota-derived H2S induces c-kit+ cDC1 autophagic cell death and liver inflammation in MASH www.nature.com/articles/s41...
nature.com
Microbiota-derived H2S induces c-kit+ cDC1 autophagic cell death and liver inflammation in metabolic dysfunction-associated steatohepatitis - Nature Communications
The immune regulatory mechanism for metabolic dysfunction-associated steatohepatitis (MASH) remains elusive. Here, the authors identify a c-kit+ cDC1 subset, which can be depleted by Desulfovibrio_sp....
022
Sharad Kumar @molregulation.bsky.social · 01/03/2025
Interesting work! Norovirus co-opts NINJ1 for selective protein secretion | Science Advances www.science.org/doi/10.1126/...
science.org
Norovirus co-opts NINJ1 for selective protein secretion
NINJ1-mediated plasma membrane rupture enables the selective release of an intracellular viral protein.
000
Reposted by Sharad Kumar
Nature @nature.com · 27/02/2025
Nature research paper: Macrophages recycle phagocytosed bacteria to fuel immunometabolic responses go.nature.com/3XmyOPD
go.nature.com
Macrophages recycle phagocytosed bacteria to fuel immunometabolic responses - Nature
Phagocytosed bacteria can serve as an alternative nutrient source for macrophages, influencing their metabolic and immune responses through the recycling of microbial components, with the process regulated by nutrient-sensing mechanisms and bacterial viability.
16925
Reposted by Sharad Kumar
ARC Tracker @arc-tracker.bsky.social · 25/02/2025
Yeah. They should release a 20 page proposal tomorrow that has "WE NEED MORE MONEY" printed on every single page and nothing else.
0252
Reposted by Sharad Kumar
Nature @nature.com · 25/02/2025
Nature research paper: Human-correlated genetic models identify precision therapy for liver cancer go.nature.com/41qNkbs
go.nature.com
Human-correlated genetic models identify precision therapy for liver cancer - Nature
As proof of principle, an analysis using a suite of human-aligned immunocompetent mouse models of hepatocellular carcinoma identifies a promising therapeutic candidate, cladribine, which acts in a highly effective subtype-specific manner in combination with standard-of-care therapy.
04914
Sharad Kumar @molregulation.bsky.social · 18/02/2025
Really cool study showing that EVs shed from pyroptotic cells contain gasdermin pores that, when fused to other cells, cause bystander cell death. Transplantation of gasdermin pores by extracellular vesicles propagate... sciencedirect.com/science/articl…
sciencedirect.com
030
Reposted by Sharad Kumar
Nature @nature.com · 13/02/2025
BREAKING: Scientists are bracing for major changes in the direction of US biomedical research as Robert F. Kennedy Jr, who has promoted vaccine misinformation and public-health conspiracies, gains control over a vast swathe of science policy. go.nature.com/4hYQEQj
go.nature.com
Vaccine sceptic RFK Jr is now a powerful force in US science: what will he do?
Kennedy has expressed support for some fields, but has also declared he’d like a ‘break’ in infectious-disease research.
1510035
Reposted by Sharad Kumar
Nature @nature.com · 13/02/2025
Nature research paper: Converging mechanism of UM171 and KBTBD4 neomorphic cancer mutations go.nature.com/3WZ9ije
go.nature.com
Converging mechanism of UM171 and KBTBD4 neomorphic cancer mutations - Nature
We show that gain-of-function cancer mutations in the KBTBD4 E3 ligase promote neodegradation of substrates via a shape-complementarity-based mechanism, which converges with the mechanism of action of the UM171 molecular glue degrader and can be blocked by HDAC1/2 inhibitors.
0203
Reposted by Sharad Kumar
Eric Topol @erictopol.bsky.social · 14/02/2025
Texas measles outbreak doubled, now into 4 counties www.houstonchronicle.com/health/artic...
houstonchronicle.com
West Texas measles outbreak doubles to 48 cases in four counties
Most of the measles cases are still among school-aged children in Gaines County, Texas health officials said Friday.
64747338