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Jonathan Ostrem

@jonathanostrem.bsky.social

Chemical biologist and thoracic oncologist; Assistant Professor and lab PI at #UCSF

40 Followers  |  32 Following  |  1 Posts  |  Joined: 20.11.2024  |  1.6286

Latest posts by jonathanostrem.bsky.social on Bluesky

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China’s Biotech Advances Threaten U.S. Dominance, Warns Congressional Report Congress should invest at least $15 billion to support biotech research over the next five years and take other steps to bolster manufacturing in the U.S., the report said.

This!!! I hope someone in Washington is listening

www.wsj.com/tech/biotech...

08.04.2025 22:48 β€” πŸ‘ 306    πŸ” 109    πŸ’¬ 15    πŸ“Œ 5
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Structures of the PI3KΞ±/KRas complex on lipid bilayers reveal the molecular mechanism of PI3KΞ± activation PI3KΞ± is a potent oncogene that converts PIP2 to PIP3 at the plasma membrane upon activation by receptor tyrosine kinases and Ras GTPases. In the absence of any structures of activated PI3KΞ±, the mole...

Beautiful work from our colleagues in the Jura & Verba labs here @ UCSF! Cryo-EM structures of PI3Ka / KRas complex in context of lipid nanodiscs. Read on for unexpected dimers & to see how high-rez structural biology w/ the right reconstitutions can inform mechanism! www.biorxiv.org/content/10.1...

26.03.2025 16:20 β€” πŸ‘ 12    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
Discovery of Elironrasib (RMC-6291), a Potent and Orally Bioavailable, RAS(ON) G12C-Selective, Covalent Tricomplex Inhibitor for the Treatment of Patients with RAS G12C-Addicted Cancers | Journal of Medicinal Chemistry The discovery of elironrasib (RMC-6291) represents a significant breakthrough in targeting the previously deemed undruggable GTP-bound, active KRASG12C. To target the active state of RAS (RAS(ON)) ...

Impressive J. Med. Chem. paper by a team of Revolution Medicines around Adrian Gill and James Cregg. Development of the RAS(On) G12C inhibitor Elironrasib. Exciting to see the evolution of the warhead from disulfide via chloroacetamide and acrylamide to substituted butynamide pubs.acs.org/doi/10....

17.03.2025 07:00 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Looking forward to celebrating 80 years of federally funded science, technology and innovation @standupforscience.bsky.social SF, March 7, Civic Center, 1-3 pm πŸ§ͺ 🧫 🧬

03.03.2025 18:55 β€” πŸ‘ 177    πŸ” 34    πŸ’¬ 2    πŸ“Œ 2
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NIH ban on renewing senior scientists adds to assaults on its in-house research Policy follows firings of tenure-track scientists and suspension of training programs

Of the 4000 researchers at NIH, only 20% are tenured. They’re going to fire all the rest as their contracts come up for renewal, absolutely decimating research at the NIH. This is catastrophic, not just for Americans, but for the whole world.

www.science.org/content/arti...

28.02.2025 06:19 β€” πŸ‘ 7287    πŸ” 2685    πŸ’¬ 242    πŸ“Œ 157
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Federal workers are the people doing the hard work to process veterans’ benefits, make sure our airplanes can fly safely, and protect families from the bird flu.

To all of our federal workers: I see you and I’m fighting for you.

28.02.2025 14:18 β€” πŸ‘ 12204    πŸ” 2326    πŸ’¬ 394    πŸ“Œ 100
Post image 27.02.2025 22:04 β€” πŸ‘ 76955    πŸ” 24133    πŸ’¬ 1475    πŸ“Œ 1248
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NIH ban on renewing senior scientists adds to assaults on its in-house research Policy follows firings of tenure-track scientists and suspension of training programs

More tragic news about NIH and NIH science. Grant system is frozen and intramural program is being slashed. All will claw back on treatments and cures for cancer and other human diseases. This can’t be what the public wants. πŸ§ͺ www.science.org/content/arti...

27.02.2025 10:05 β€” πŸ‘ 3035    πŸ” 1219    πŸ’¬ 132    πŸ“Œ 75
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NIH ban on renewing senior scientists adds to assaults on its in-house research Policy follows firings of tenure-track scientists and suspension of training programs

www.science.org/content/arti...

27.02.2025 12:43 β€” πŸ‘ 28    πŸ” 19    πŸ’¬ 1    πŸ“Œ 3
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NIH is again throttling research funding in defiance of a federal court order A freeze on "new and continuation awards" will "remain in place" pending DEI review, states a new internal memo.

Despite court order, NIH grants remain frozen. Newly awarded grants, grants with fundable scores, & funds for a new budget cycle of a current project are all *FROZEN*πŸ₯Ά and not being released. US research is being choked to death & is on life support right now www.motherjones.com/politics/202...

26.02.2025 12:04 β€” πŸ‘ 3872    πŸ” 1582    πŸ’¬ 175    πŸ“Œ 83
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'Devastating': DOGE cuts reportedly put cancer-stricken kindergartner's life at risk A Michigan kindergartner's family is relying on experimental treatments and research courtesy of the National Institutes of Health to fight his extremely rare form of cancer β€” and that treatment could...

"There’s no real answers."

25.02.2025 18:47 β€” πŸ‘ 520    πŸ” 174    πŸ’¬ 26    πŸ“Œ 8

A thread. Things are bad. But we’ve already lost if they smother the passion & joy we have for science. So here’s a proposal: if you’re a biologist in any way impacted by *exasperated wave* & want to chat, drop me an e-mail at myfirst.mylast[at]ucsf.edu. Let’s schedule a 30min chat about [...] (1/n)

17.02.2025 19:00 β€” πŸ‘ 70    πŸ” 16    πŸ’¬ 2    πŸ“Œ 3

NIH funding at @UMich supports important medical research, such as extending the life of organs waiting for transplant, advancing treatments for cerebral palsy, and sustaining experimental genetic trials for children with brain cancer.

14.02.2025 20:25 β€” πŸ‘ 8458    πŸ” 2114    πŸ’¬ 209    πŸ“Œ 57
STAND UP FOR SCIENCE 2025 - DC and NATIONWIDE Stand up for science with us on March 7th, 2025, because science is for everyone! More info at www.standupforscience2025.org

Stand Up for Science rallies will be held in DC and state capitals on March 7th. Share with friends. Sign-up here to get email updates with details: www.eventbrite.com/e/stand-up-f...

12.02.2025 12:44 β€” πŸ‘ 8093    πŸ” 2946    πŸ’¬ 151    πŸ“Œ 80
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Stand Up And Be Counted

Biopharma companies and CEOs are keeping their heads down at their own peril. They should speak up about what’s happening to the NIH and other science agencies before it’s too late.

Silence gives consent. And no one should consent to this.

12.02.2025 16:45 β€” πŸ‘ 386    πŸ” 159    πŸ’¬ 17    πŸ“Œ 19
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Trump maintains funding freeze at NIH, defying court order The Trump administration is still prohibiting National Institutes of Health (NIH) staff from issuing virtually all grant funding, an NIH official tells Popular Information.

popular.info/p/trump-main...

11.02.2025 15:33 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Molecular basis of proton sensing by G protein-coupled receptors Howard etΒ al. combine mechanistic deep mutational scanning, cryo-EM, and constant-pH molecular dynamics simulations to provide a holistic view of proton activation in human pH-sensitive GPCRs.

Congrats @willowcoyote.bsky.social @amanglik.bsky.social and all authors on a tour de force dissection of proton-sensing by GPCRs! DMS, cryo-EM, MD -- it has it all! www.cell.com/cell/fulltex...

02.01.2025 17:31 β€” πŸ‘ 32    πŸ” 16    πŸ’¬ 0    πŸ“Œ 0
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Small molecule activation of the tumor suppressor kinase LKB1 The ability to identify and target oncogenic signals has transformed clinical oncology. Drug development for targeted therapies has historically focused on the inhibition of oncogenic kinases and GTPa...

www.biorxiv.org/content/10.1... Activating the tumor suppressor LKB1 through STRAD binding small molecules. Glad we got to help out on this exciting approach from John Gordan’s lab.

24.12.2024 00:22 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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