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asamelson

@asamelson.bsky.social
149 followers 160 following 30 posts

Avi Lab coming to UCLA 2025

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Syd Sattler @sydsat.bsky.social · 29/06/2026
What if an embryo made immune cells before it finished building the tissue they usually come from? In our new preprint, we show that annual killifish embryos specify neutrophils before germ layers are fully resolved. www.biorxiv.org/content/10.6... Huge thanks to my PI, @ohnolog.bsky.social ! 🧵
biorxiv.org
Early immune cell development precedes gastrulation in annual killifish
During embryogenesis, cell types arise in a predictable order because developmental regulators act sequentially. But how evolutionary changes in morphogenesis reshape the signaling environments that a...
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Senator Scott Wiener @scottwiener.bsky.social · 15/04/2026
3. Create & fund a California scientific research institute to ensure we fund science research even if the federal government continues to pull back (SB 895) 4. Ensure California’s ICE mask ban, which I passed last year, is fully enforceable (SB 1004)
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Stephanie Wankowicz @stephanieaw.bsky.social · 12/03/2026
Excited to share Sampleworks led by @karsonchrispens.bsky.social with @diffuseproject.bsky.social. It's a modular framework connecting structure predictors to experimental data and guidance methods. Swap predictors or guidance methods. All open and made to be built upon. t.co/fvNHH3gfVu
t.co
https://diffuse.science/posts/sampleworks/
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Eric Topol @erictopol.bsky.social · 01/03/2026
That's right. Worse than Pointless www.nytimes.com/2026/02/23/o...
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Colette Delawalla, PhD @cdelawalla.bsky.social · 24/02/2026
Maybe science organizations don’t want to play outside game. FINE. 1. Apologize to your people for not responding well & 2. Support some activists who are doing the dirty work you can’t be bothered to do. Not a SINGLE science org or society has donated to @standupforscience.bsky.social
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John Pfaff @johnpfaff.bsky.social · 30/01/2026
If I were a blue state governor, I’d be looking into adding a bunch of tenure lines at my state schools. I know that seems like “kick ‘em when they’re down,” but it’s more like “let academics who can escape to where they can do real work.” Builds up your own schools AND protect US academic output.
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Stand Up for Science! @standupforscience.net · 28/01/2026
Get in, dorks. We're ready for round two. RALLY TO TAKE BACK SCIENCE! 🔬🧪✊ March 7th, 2026 in Washington, DC Learn more at www.standupforscience.net/ma... (link in our bio.)
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Martin Kampmann @kampmann.bsky.social · 28/01/2026
Our paper is (finally) out in Cell today! CRISPR screens in iPSC-derived neurons reveal principles of tau proteostasis www.cell.com/cell/fulltex... Great collaborative effort - read more from first author @asamelson.bsky.social below:
cell.com
CRISPR screens in iPSC-derived neurons reveal principles of tau proteostasis
CRISPR screens in iPSC-derived neurons reveal that the E3 ubiquitin ligase CRL5SOCS4 ubiquitinates tau, that CUL5 expression is correlated with resilience in human Alzheimer’s disease, and that electr...
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asamelson @asamelson.bsky.social · 28/01/2026
After a long review process, I'm excited that our paper is finally in print: www.cell.com/cell/fulltex... TL;DR: We use CRISPR screens in iPSC-derived neurons to find a new tau E3 ligase and a relationship between oxidative stress, the proteasome, and tau proteolytic fragments. More below 👇
cell.com
CRISPR screens in iPSC-derived neurons reveal principles of tau proteostasis
CRISPR screens in iPSC-derived neurons reveal that the E3 ubiquitin ligase CRL5SOCS4 ubiquitinates tau, that CUL5 expression is correlated with resilience in human Alzheimer’s disease, and that electr...
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UCLA Broad Stem Cell Research Center @uclastemcell.bsky.social · 18/11/2025
Lab tours. Live demos. Real talk with scientists. Students from South Gate High School got an inside look at UCLA's breakthrough research in medicine and disease treatment. Their curiosity and questions brought so much energy to our labs! 🔬🧬🧫
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Colette Delawalla, PhD @cdelawalla.bsky.social · 12/11/2025
LISTEN UP, DORKS! @standupforscience.bsky.social is getting (even more!) political. People often say "well what can one person do??" 🥊 If all our followers joined Science Fight Club and gave $5 a month, we could save science! 🥊Join here: www.standupforscience.net/join-science... SHARE WIDELY!
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Martin Kampmann @kampmann.bsky.social · 22/10/2025
Thank you Alzforum for featuring our new preprint identifying regulators of disease states of #microglia. Project led by Amanda McQuade, computation by Reet Mishra, collaboration with the Nunez and De Jager labs. Alzforum www.alzforum.org/news/researc... Preprint www.biorxiv.org/content/10.1...
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Colette Delawalla, PhD @cdelawalla.bsky.social · 22/10/2025
On Sept 17th, 2025, @aaas.org and @researchamerica.bsky.social hosted Jay Bhattacharya—NIH Director—as the keynote for the National Health Research Forum. Less than two weeks later, he spoke at the MAHA Action hour alongside Oz, Russel Brand, Tony Lyons, and Callie Means. I have a call to action:
MAHA action flyer for 10/1The action hour agenda.
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Schmitt Lab @ UCLA @schmittlab-ucla.bsky.social · 17/10/2025
🎀 New from the lab 🎀 We used the SPARK design for kinase biosensors to develop a PINK1 biosensor, PINK1-SPARK. We used PINK1-SPARK to measure PINK1 activity in multiple cell types & when using HaloTag, for multiplexing! Plasmids coming soon, check out the preprint: www.biorxiv.org/content/10.1...
biorxiv.org
Visualizing PINK1 Activity Dynamics in Single Cells with a Phase Separation-Based Kinase Activity Reporter
Phosphatase and tensin homologue-induced kinase 1 (PINK1) is a serine/threonine kinase that plays roles in mitophagy, cell death, and regulation of cellular bioenergetics. Current approaches for study...
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UCLA Broad Stem Cell Research Center @uclastemcell.bsky.social · 27/08/2025
Researchers at UCLA built mini models of human lungs, hearts and brains to study hantaviruses and identify potential therapies. With no current treatments, these deadly rodent-borne viruses pose a serious threat to public health. #ResearchPowersProgress stemcell.ucla.edu/news/ucla-sc...
stemcell.ucla.edu
UCLA scientists use mini organ models to uncover secrets of deadly hantaviruses and point to new treatments
UCLA researchers have created miniature stem cell-based organoid models of human lungs, hearts and brains to study how hantaviruses — rare but often deadly viruses spread by rodents — infect the body....
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Alfred Twu @alfredtwu.com · 27/08/2025
Los Angeles rents are high, especially compared to the average pay - but it wasn't always that way. In this video, LA Councilmember Nithya Raman goes over the history of why LA stopped building enough housing relative to the number of new jobs, and how the city can reverse that trend. 🏠🏠🏠
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Martin Kampmann @kampmann.bsky.social · 22/08/2025
Excited that the paper presenting our mouse brain in vivo CRISPR screening platform is out today in @natneuro.nature.com! Great team effort, led by Biswa Ramani and @ivlrose.bsky.social in the Kampmann lab. www.nature.com/articles/s41...
nature.com
CRISPR screening by AAV episome-sequencing (CrAAVe-seq): a scalable cell-type-specific in vivo platform uncovers neuronal essential genes - Nature Neuroscience
The authors developed an adeno-associated virus-based high-throughput in vivo CRISPR screening platform for endogenous mouse brain cell types. Using this platform, they define genes and pathways essen...
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Simon Rosenberg @simonwdc.bsky.social · 19/08/2025
2 bits of data from new Economist/YouGov poll..... 13% support for cutting research funding to universities. 24% among Republicans. Polling on this continues to be catastrophic for the Rs, suggests Dems should be learning far harder into standing up for science and our universities. 1/
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California YIMBY @cayimby.bsky.social · 19/08/2025
“Los Angeles leaders are once again demonstrating their cowardice and failing their own constituents who desperately need more housing—and they’re doing it at the behest of LA’s wealthiest, most entitled voters, who have consistently blocked progress on housing affordability.” - @hanlon.bsky.social
cayimby.org
California YIMBY Statement on LA City Council Vote on SB 79
Los Angeles, CA — Today the Los Angeles City Council voted to oppose SB 79, a state bill designed to expand affordable housing near major transit stops. In doing so, councilmembers repeated discredite...
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UCLA Broad Stem Cell Research Center @uclastemcell.bsky.social · 31/07/2025
In a first-of-its-kind clinical trial, UCLA scientists have shown it’s possible to reprogram a patient’s own stem cells to create a continuous supply of functional T cells, the immune system’s most powerful cancer-killing agents. bit.ly/4fhvMnv #CancerResearch #StemCellResearch
bit.ly
UCLA scientists reprogram stem cells to create renewable cancer-fighting T cells
In a first-of-its-kind clinical trial, UCLA scientists have shown it’s possible to reprogram a patient’s blood-forming stem cells to generate a continuous supply of functional T cells, the immune syst...
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Amy Strom @dnamystrom.bsky.social · 07/07/2025
I'm thrilled to announce my next career step-- I’m joining Genentech as a Principal Scientist & Lab Head in Discovery Oncology! I’ll be hunting new ways to target cancers using my background in disordered nuclear proteins.
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jamelle @jamellebouie.net · 03/07/2025
the republican party is a modern day Slave Power and the only way forward for this country is to sweep it into the ash heap of history
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UCLA Broad Stem Cell Research Center @uclastemcell.bsky.social · 03/07/2025
UCLA-led team has received a $3.5 million grant from the NIH to study and develop treatments for the infectious disease #mpox. Their discoveries could help prevent the next global outbreak. ➡️ bit.ly/3TW38hI
bit.ly
UCLA-led team receives $3.5 million NIH grant to develop treatment for mpox: What to know about the viral illness
Researchers from the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA have received a $3.5 million grant from the National Institutes of Health to study and develop ...
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actioncookbook @actioncookbook.com · 03/07/2025
Logging off for the weekend, but shouting it one more time before I do: they don't believe in America. actioncookbook.substack.com/p/america-be...
These people, the gleeful goons, the giddy race scientists, the cheerleaders of misery, the “America for Americans only” demagogues—they don’t believe in this country.

They never have, no matter how brazenly they’ll wrap themselves in the flag to justify their actions. The country they believe is small and cruel. It’s a country where secret police demand to see papers, where neighbors turn on neighbors, where the state is the enemy of the people rather than the embodiment of their collective will. It’s a place governed by fear and by hate, but even more so by doubt—doubt that any country could possibly be big enough to contain multitudes. Doubt that any country could be strong enough to take the unrealized dreams of the rest of the world and make them possible. Doubt that any country could be resilient enough to face hardship head-on and keep marching toward those ideals put to parchment by imperfect men two and a half centuries ago.

They don’t believe in America, and no matter how tightly they grip the reins of government right now, America doesn’t belong to them. It belongs to the people who do believe in it, whether they came over on the Mayflower or through Ellis Island, in business class or on foot, “the right way” or not. Heck, maybe they were here long before anyone who looked like me showed up. It belongs to people who believe in those ideals that we’ve strove towards but never quite lived up to, people who believe that we should keep striving anyways because that arc of the universe isn’t going to bend itself. It belongs to people willing to do the work, willing to stand up for their communities, and willing to take to their streets to stand up for those unmet ideals. It belongs to people who can still see the promise of this place in their mind and want more than anything to be a part of it, even if they have to cross an ocean or a desert to do so.
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Astra Taylor @astra.bsky.social · 03/07/2025
Once again, this is a massive public jobs program for fascists. This bill was never just about tax cuts and gutting social services. It's about investing our collective resources in violence and using state power to spread fear and destroy solidarity. We need to resist this with all we've got.
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Alexandria Ocasio-Cortez @aoc.bsky.social · 03/07/2025
I am grieving the barbarism that is going to unfurl from all this. People are going to die. Livelihoods gone. All to feed a corrupt kleptocracy. I see every day up close how different it is from the first time around. There are no guardrails. A disaster. I’m sorry we have to live through this.
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Bobby Kogan @bbkogan.bsky.social · 03/07/2025
Legitimately feel sick. We are hours away from the largest cuts to low-income people in history. People’s lives will be ruined. It is so unfair. It’s unfair to be born into a system that allows this level of poverty in the first place and it’s evil to rip away aid from the needy. Hard to watch this.
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Armand Domalewski @armanddomalewski.bsky.social · 02/07/2025
genuinely, kicking 17 MILLION people off of their health insurance and stripping TWO MILLON people off of food assistance is so grotesque and depressing it’s hard to think of anything else
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Yonah Freemark @yonahfreemark.com · 01/07/2025
GOP reconciliation bill's effects: —Poorest 1/5 of earners: *declining* after-tax incomes —Those making >$3 m/year gain $118,000 —12 m people become uninsured —3.2 m people lose food stamps —US stops its efforts to combat climate change —$122 billion spent on deportation & concentration camps
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Tami Lieberman @contaminatedsci.bsky.social · 30/06/2025
Our paper demonstrating that within-species warfare interactions are ecologically important on human skin is now published in Nature Micro! www.nature.com/articles/s41...
nature.com
Intraspecies warfare restricts strain coexistence in human skin microbiomes - Nature Microbiology
About 15,000 pairwise interactions within S. epidermidis from 18 people in 6 families reveal the antagonism and molecular trade-offs that shape the skin microbiota.
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James Fraser @fraserlab.com · 30/06/2025
Basically the @elife.bsky.social model?
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Indivisible Palo Alto Plus @indivisiblepaloaltoplus.org · 29/06/2025
Final Senate votes in next 36 hours. www.mobilize.us/mobilize/eve... Save Medicaid NOW - Final Push Phonebanks to Republican Congressmembers · Mobilize
mobilize.us
Save Medicaid NOW - Final Push Phonebanks to Republican Congressmembers · Mobilize
The Republican controlled Congress and Senate are voting on budgets that will decimate Medicaid and millions of Californians will lose their healthcare - just so they can give more tax breaks to their...
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Julian Streit @julianstreit.bsky.social · 28/06/2025
New preprint with Benjamin Lang, Richard Kriwacki, John Christodoulou, and M. Madan Babu! www.biorxiv.org/content/10.1... Protein Dynamics at Different Timescales Unlock Access to Hidden Post-Translational Modification Sites #bioinformatics #compchem #folding #proteindynamics
biorxiv.org
Protein Dynamics at Different Timescales Unlock Access to Hidden Post-Translational Modification Sites
Post-translational modifications (PTMs) alter the proteome in response to intra- and extracellular signals, providing fundamental information processing in development, homeostasis and disease. Here, ...
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Max Kennerly @maxkennerly.bsky.social · 27/06/2025
Elites aren't even using their existing mechanisms set up to allow deniable messaging. Go look at PhRMA, the big bad lobbying group; they've got nothing to say about their NIH R&D pipeline being destroyed, nor about the worst regression in public health and vaccine acceptance in U.S. history.
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M. Nolan Gray 🥑 @mnolangray.bsky.social · 26/06/2025
We're so close to fixing key drivers of California's housing crisis: ✅️ SB 79 would legalize apartments near transit. ✅️ AB 130 would end frivolous litigation against infill. ✅️ AB 253 + AB 1308 would prevent permitting/inspection delays. ➡️ Here's how you can help.
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UCLA Broad Stem Cell Research Center @uclastemcell.bsky.social · 26/06/2025
For Alzheimer's & Brain Awareness Month, we highlight the work of Dr. Jessica Rexach, a UCLA neurologist and neurogeneticist working to uncover the molecular drivers of Alzheimer’s disease. Learn more about her work: stemcell.ucla.edu/member-direc... #StemCellResearch #Neuroscience #BrainHealth
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 25/06/2025
A big thanks to NC Rep. Valerie Foushee for being the first signature on this bipartisan letter urging the House to maintain a strong commitment to funding for NIH in the 2026 Appropriations bill. Is your Representative here? www.aamc.org/research/adh...
Text in link
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Tami Lieberman @contaminatedsci.bsky.social · 25/06/2025
Check out Laura's thread on our latest preprint demonstrating best methods for low biomass skin sampling.
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Stand Up for Science! @standupforscience.net · 25/06/2025
Interested in supporting the brave NIHers mentioned in RFK jr.’s hearing today? Join 29k of us - Nobel Laureates, NIHers, doctors, scientists & concerned citizens- in signing our letter of support: act.standupforscience.net/forms/add-na... #StandUpForScience #BethesdaDeclaration #SaveNIH #RFKjr
act.standupforscience.net
ADD YOUR NAME: Sign the Open Letter in Support of NIH Staff
Join the courageous and committed National Institutes of Health (NIH) public servants by adding your name now.
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bhadurilab.bsky.social @bhadurilab.bsky.social · 24/06/2025
🧵Excited to share our new preprint introducing iHOTT - an autologous tumor-immune co-culture model that captures patient-specific responses in #Glioblastoma 💥Now on @biorxivpreprint : biorxiv.org/content/10.1... Led by Dr. Shivani Baisiwala, Neurosurgery Resident in the lab
biorxiv.org
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Timothy Burke @bubbaprog.xyz · 22/06/2025
the biggest crew of goddamned idiots you ever saw
Vance, Rubio, & Hegseth all looking like real shitheads standing behind a lunatic looking Trump.
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Alt NIH Bluesky 🧪 @altnih4science.bsky.social · 21/06/2025
Big lawsuit filed today defending NSF. It’s a coalition including @aaup.bsky.social , @uaw.org , and @democracyforward.org . See thread🧪
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Denny Carter @dennycarter.bsky.social · 17/06/2025
Very much into this idea
Legal support: At a minimum, state attorneys general should be prepared to file amicus briefs in support of lawsuits against unlawful deployments of federal troops.

Information warfare: Members of the defensive pact should do as much as they can to draw attention to Trump’s abuses of power in allied cities and stoke national sentiment against him.

Material support: Where necessary, members of the defensive pact should be prepared to ship supplies (for example, PPE to protect members of the public from tear gas) and even personnel where it is most urgently needed.

Intelligence sharing: Lastly, members of the defensive pact should keep each other apprised of whatever they know about the Trump administration’s plans and the plans of right-wing paramilitary groups.
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Virginia Gewin @virginiagewin.bsky.social · 16/06/2025
👀‼️
axios.com
Judge orders Trump admin. to restore hundreds of terminated NIH grants
"I've never seen government racial discrimination like this," the judge said.
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Jeremy Berg @jeremymberg.bsky.social · 16/06/2025
I listened to the hearing this morning in the two cases (now linked) about NIH grant terminations. These cases are before Judge William Young, a very accomplished judge appointed by Ronald Reagan. en.wikipedia.org/wiki/William... 1/n
en.wikipedia.org
William G. Young - Wikipedia
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Stephanie Wankowicz @stephanieaw.bsky.social · 15/06/2025
Episode 4 of The Tortured Proteins Department is out now! We chatted about We chatted about the latest news, our Conformational Ensembles Conference, vibe coding in science, and recent running races. @fraserlab.com podcasts.apple.com/us/podcast/t... open.spotify.com/episode/2SLV...
podcasts.apple.com
Episode 4: Conformational Ensembles & Teaching Vibe Coding
Podcast Episode · The Tortured Proteins Department · 06/14/2025 · 40m
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Senator Scott Wiener @scottwiener.bsky.social · 12/06/2025
Active duty military to the streets of an American city A military parade to celebrate the President’s birthday An emerging police state with secret police who cover their faces & disappear U.S. residents *Our democracy is in a red zone. We must mobilize to stop this.
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🗽LOLGOP🗽 @lolgop.bsky.social · 11/06/2025
This clip has me thinking about people finally taking Trump's ownership of the narrative, enforced by the massive GOP media advantage, seriously. Fox et al want people to believe LA is burning, terrible, overrun. LA has a lot of people who are pretty good at communicating, who can show otherwise!
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Martin Kampmann @kampmann.bsky.social · 10/06/2025
Stand up for science - stand up for the NIH! I just signed the support letter for the #BethesdaDeclaration. Please consider signing as well: www.standupforscience.net/bethesda-dec...
standupforscience.net
Bethesda Declaration — STAND UP FOR SCIENCE
Support NIH Staff Now!
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