Vijay Ramani
@vram142.bsky.social
PI @ Gladstone Institutes & UCSF. Molecular technologies & the genomics / molecular biology / biochemistry of gene regulation. Views here mine & do not represent those of my affiliated institutions.
Pinned
Vijay Ramani
@vram142.bsky.social
· Sep 20
The eukaryotic replisome intrinsically generates asymmetric daughter chromatin fibers
DNA replication is molecularly asymmetric, due to distinct mechanisms for lagging and leading strand DNA synthesis. Whether chromatin assembly on newly replicated strands is also asymmetric remains un...
www.biorxiv.org
Some (+)ve news to lighten another heavy weekend: our latest preprint (c/o Mattiroli + Ramani labs) is up!
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
Reposted by Vijay Ramani
@science.org🧬Cohesin guides homology search during DNA repair using loops and sister chromatid linkages | Science www.science.org/doi/10.1126/... @fedeteloni.bsky.social @danielgerlich.bsky.social et al.
Cohesin guides homology search during DNA repair using loops and sister chromatid linkages
Accurate repair of DNA double-strand breaks (DSBs) is essential for genome stability, and defective repair underlies diseases such as cancer. Homologous recombination uses an intact homologous sequenc...
www.science.org
December 5, 2025 at 8:50 PM
@science.org🧬Cohesin guides homology search during DNA repair using loops and sister chromatid linkages | Science www.science.org/doi/10.1126/... @fedeteloni.bsky.social @danielgerlich.bsky.social et al.
Reposted by Vijay Ramani
Oh hey, looks like I can upload longer videos here now!
Here’s my most recent one covering the latest findings on ecDNA retention mechanisms from the Chang & Mischel labs.
Here’s my most recent one covering the latest findings on ecDNA retention mechanisms from the Chang & Mischel labs.
December 4, 2025 at 1:20 AM
Oh hey, looks like I can upload longer videos here now!
Here’s my most recent one covering the latest findings on ecDNA retention mechanisms from the Chang & Mischel labs.
Here’s my most recent one covering the latest findings on ecDNA retention mechanisms from the Chang & Mischel labs.
Reposted by Vijay Ramani
Oxidative phosphorylation complexes contain subunits encoded by both the nuclear and mitochondrial genomes. How do cells coordinate the synthesis and assembly of these complexes at the inner membrane? We teamed up with Martin Ott (@mitolab.bsky.social) to address this in two recent papers.
December 3, 2025 at 8:42 PM
Oxidative phosphorylation complexes contain subunits encoded by both the nuclear and mitochondrial genomes. How do cells coordinate the synthesis and assembly of these complexes at the inner membrane? We teamed up with Martin Ott (@mitolab.bsky.social) to address this in two recent papers.
Reposted by Vijay Ramani
We just released IRIS (7+yrs project), a tech we believe will transform cell biology by pairing high-resolution cell images with matched #scRNAseq, letting us interpret cellular form by its molecular ground truth.
Huge tx to @JohannesBues, @JoernPezoldt, @CamilleLambert et al.
shorturl.at/zgY8Z
Huge tx to @JohannesBues, @JoernPezoldt, @CamilleLambert et al.
shorturl.at/zgY8Z
December 2, 2025 at 2:18 PM
We just released IRIS (7+yrs project), a tech we believe will transform cell biology by pairing high-resolution cell images with matched #scRNAseq, letting us interpret cellular form by its molecular ground truth.
Huge tx to @JohannesBues, @JoernPezoldt, @CamilleLambert et al.
shorturl.at/zgY8Z
Huge tx to @JohannesBues, @JoernPezoldt, @CamilleLambert et al.
shorturl.at/zgY8Z
Reposted by Vijay Ramani
Here is a copy of last year's Twitter thread explaining our preprint - jump to (21) for the new stuff 👀
Synergy between cis-regulatory elements can render cohesin dispensable for distal enhancer function
now revised and journal accepted at www.science.org/doi/10.1126/...
🧵👇
Synergy between cis-regulatory elements can render cohesin dispensable for distal enhancer function
now revised and journal accepted at www.science.org/doi/10.1126/...
🧵👇
November 27, 2025 at 9:59 PM
Here is a copy of last year's Twitter thread explaining our preprint - jump to (21) for the new stuff 👀
Synergy between cis-regulatory elements can render cohesin dispensable for distal enhancer function
now revised and journal accepted at www.science.org/doi/10.1126/...
🧵👇
Synergy between cis-regulatory elements can render cohesin dispensable for distal enhancer function
now revised and journal accepted at www.science.org/doi/10.1126/...
🧵👇
Man it would be so cool if, in the year 2025 of our lord, we could all just be chill and celebratory about nice professional things being announced for our colleagues in molecular biology.
Unrelated, anyone reading absolute Batman? Bc it slaps.
Unrelated, anyone reading absolute Batman? Bc it slaps.
November 29, 2025 at 10:30 AM
Man it would be so cool if, in the year 2025 of our lord, we could all just be chill and celebratory about nice professional things being announced for our colleagues in molecular biology.
Unrelated, anyone reading absolute Batman? Bc it slaps.
Unrelated, anyone reading absolute Batman? Bc it slaps.
Reposted by Vijay Ramani
We are looking for a postdoctoral fellow to work on induced proximity 🤜🤛 and functional genomics! Join our team in Toronto 🇨🇦 to tackle major challenges in oncology and neurodegeneration. www.nature.com/naturecareer...
POSTDOCTORAL FELLOW - Toronto (City), Ontario (CA) job with Taipale Lab, Donnelly Centre, University of Toronto | 12849004
The Taipale lab in the Donnelly CCBR and University of Toronto is looking for a highly motivated Postdoctoral Fellow
www.nature.com
November 19, 2025 at 5:51 PM
We are looking for a postdoctoral fellow to work on induced proximity 🤜🤛 and functional genomics! Join our team in Toronto 🇨🇦 to tackle major challenges in oncology and neurodegeneration. www.nature.com/naturecareer...
Reposted by Vijay Ramani
Unpause! I'm super happy to now be able to share the published version of our paper at Science Advances showing that:
1) active histone mods occur independently of transcription
2) transcription coordinates histone deacetylation at active promoters
www.science.org/doi/10.1126/...
1) active histone mods occur independently of transcription
2) transcription coordinates histone deacetylation at active promoters
www.science.org/doi/10.1126/...
RNA polymerase II coordinates histone deacetylation at active promoters
Transcription initiation limits histone acetylation and H2AZ incorporation at promoters.
www.science.org
February 12, 2025 at 9:21 PM
Unpause! I'm super happy to now be able to share the published version of our paper at Science Advances showing that:
1) active histone mods occur independently of transcription
2) transcription coordinates histone deacetylation at active promoters
www.science.org/doi/10.1126/...
1) active histone mods occur independently of transcription
2) transcription coordinates histone deacetylation at active promoters
www.science.org/doi/10.1126/...
Reposted by Vijay Ramani
Read my full story here!
Psychedelics and immortality: Nature went to a health summit starring RFK and JD Vance
www.nature.com/articles/d41...
Psychedelics and immortality: Nature went to a health summit starring RFK and JD Vance
www.nature.com/articles/d41...
Psychedelics and immortality: Nature went to a health summit starring RFK and JD Vance
The Make America Healthy Again summit, attended by health secretary Robert F. Kennedy Jr and vice-president JD Vance, gave a sense of what’s driving US health policy.
www.nature.com
November 21, 2025 at 5:01 PM
Read my full story here!
Psychedelics and immortality: Nature went to a health summit starring RFK and JD Vance
www.nature.com/articles/d41...
Psychedelics and immortality: Nature went to a health summit starring RFK and JD Vance
www.nature.com/articles/d41...
Reposted by Vijay Ramani
Today in @nature.com, in work led by @adititm.bsky.social, we report the ability to prompt Evo to generate functional de novo genes.
You shall know a gene by the company it keeps!
You shall know a gene by the company it keeps!
November 19, 2025 at 4:24 PM
Today in @nature.com, in work led by @adititm.bsky.social, we report the ability to prompt Evo to generate functional de novo genes.
You shall know a gene by the company it keeps!
You shall know a gene by the company it keeps!
Reposted by Vijay Ramani
Very excited to present OpenCGChromatin🔥🔥🔥
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
November 18, 2025 at 3:07 PM
Very excited to present OpenCGChromatin🔥🔥🔥
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
Reposted by Vijay Ramani
Major new direction in the lab: hacking human cell biology with pathogen effectors (eORFs) - amazing collaboration with @miketilapia.bsky.social lab. Huge congrats to first authors Tomas & He & all co-authors! Check out the pre-print on @biorxivpreprint.bsky.social www.biorxiv.org/content/10.1...
www.biorxiv.org
November 18, 2025 at 2:51 PM
Major new direction in the lab: hacking human cell biology with pathogen effectors (eORFs) - amazing collaboration with @miketilapia.bsky.social lab. Huge congrats to first authors Tomas & He & all co-authors! Check out the pre-print on @biorxivpreprint.bsky.social www.biorxiv.org/content/10.1...
Reposted by Vijay Ramani
Excited to share Nona: a unifying multimodal masking framework for functional genomics.
Models for DNA have evolved along separate paths: sequence-to-function (AlphaGenome), language models (Evo2), and generative models (DDSM).
Can these be unified under a single paradigm? 1/15
Models for DNA have evolved along separate paths: sequence-to-function (AlphaGenome), language models (Evo2), and generative models (DDSM).
Can these be unified under a single paradigm? 1/15
November 10, 2025 at 9:01 PM
Excited to share Nona: a unifying multimodal masking framework for functional genomics.
Models for DNA have evolved along separate paths: sequence-to-function (AlphaGenome), language models (Evo2), and generative models (DDSM).
Can these be unified under a single paradigm? 1/15
Models for DNA have evolved along separate paths: sequence-to-function (AlphaGenome), language models (Evo2), and generative models (DDSM).
Can these be unified under a single paradigm? 1/15
Reposted by Vijay Ramani
Stoked to share our latest work entitled: “Large-scale discovery of neural enhancers for cis-regulation therapies”
shorturl.at/H3Qww
This is an enormous team effort that I had the honour of spearheading with Nick Page and Florence Chardon.
Bluetorial below.
shorturl.at/H3Qww
This is an enormous team effort that I had the honour of spearheading with Nick Page and Florence Chardon.
Bluetorial below.
November 5, 2025 at 3:09 PM
Stoked to share our latest work entitled: “Large-scale discovery of neural enhancers for cis-regulation therapies”
shorturl.at/H3Qww
This is an enormous team effort that I had the honour of spearheading with Nick Page and Florence Chardon.
Bluetorial below.
shorturl.at/H3Qww
This is an enormous team effort that I had the honour of spearheading with Nick Page and Florence Chardon.
Bluetorial below.
Reposted by Vijay Ramani
(1/10) How do diverse leukemia mutations converge on the same molecular program? In #RibackLab first manuscript @cp-cell.bsky.social, collaboration with @goodell-lab.bsky.social shows that disparate mutations rewire shared protein networks to form nuclear condensates called C-bodies.
November 4, 2025 at 5:58 PM
(1/10) How do diverse leukemia mutations converge on the same molecular program? In #RibackLab first manuscript @cp-cell.bsky.social, collaboration with @goodell-lab.bsky.social shows that disparate mutations rewire shared protein networks to form nuclear condensates called C-bodies.
Reposted by Vijay Ramani
RNAs outside of cells?! How did they get there?
(Thread coming soon 👀)
www.biorxiv.org/content/10.1...
(Thread coming soon 👀)
www.biorxiv.org/content/10.1...
Pseudouridine selects RNAs for extracellular transport
RNAs move through the extracellular space to transmit information between cells, including mammalian neurons, yet how specific RNAs are channeled into these extracellular routes is unknown. Using geno...
www.biorxiv.org
October 30, 2025 at 8:07 PM
RNAs outside of cells?! How did they get there?
(Thread coming soon 👀)
www.biorxiv.org/content/10.1...
(Thread coming soon 👀)
www.biorxiv.org/content/10.1...
Reposted by Vijay Ramani
1/ Excited to share our new study with @brumbaugh-lab.bsky.social, out in @natbiotech.nature.com! P-bodies selectively sequester RNAs encoding cell fate regulators, often from the preceding developmental stage. Releasing these RNAs can drive changes in cell identity. 🧵 www.nature.com/articles/s41...
Selective RNA sequestration in biomolecular condensates directs cell fate transitions - Nature Biotechnology
Stem cell differentiation is controlled by manipulating RNA condensates.
www.nature.com
October 28, 2025 at 4:02 PM
1/ Excited to share our new study with @brumbaugh-lab.bsky.social, out in @natbiotech.nature.com! P-bodies selectively sequester RNAs encoding cell fate regulators, often from the preceding developmental stage. Releasing these RNAs can drive changes in cell identity. 🧵 www.nature.com/articles/s41...
Reposted by Vijay Ramani
Now published in PLOS Biology! We found new retron containing bacteria in the wild, figured out defense mechanisms, and turned them into genome editors. From a cupful of dirt to new parts for genome editing in one story! journals.plos.org/plosbiology/...
October 23, 2025 at 6:48 PM
Now published in PLOS Biology! We found new retron containing bacteria in the wild, figured out defense mechanisms, and turned them into genome editors. From a cupful of dirt to new parts for genome editing in one story! journals.plos.org/plosbiology/...
Reposted by Vijay Ramani
The Skok Lab is recruiting an experienced computational scientist to lead single-molecule epigenomic and 3D genome analysis. We integrate long-read sequencing with Hi-C/Hi-ChIP, scmulti-omics, and machine-learning to explore chromatin topology, and gene regulation.
October 23, 2025 at 5:10 PM
The Skok Lab is recruiting an experienced computational scientist to lead single-molecule epigenomic and 3D genome analysis. We integrate long-read sequencing with Hi-C/Hi-ChIP, scmulti-omics, and machine-learning to explore chromatin topology, and gene regulation.
Reposted by Vijay Ramani
Been working on a really strange retron bacterial immune system, here's the preprint: www.biorxiv.org/content/10.1...
Type VI retrons are unlike any other. Phage infection triggers reverse transcription of a DNA fragment that activates translation of a toxin to kill the infected cell.
Type VI retrons are unlike any other. Phage infection triggers reverse transcription of a DNA fragment that activates translation of a toxin to kill the infected cell.
October 23, 2025 at 6:49 PM
Been working on a really strange retron bacterial immune system, here's the preprint: www.biorxiv.org/content/10.1...
Type VI retrons are unlike any other. Phage infection triggers reverse transcription of a DNA fragment that activates translation of a toxin to kill the infected cell.
Type VI retrons are unlike any other. Phage infection triggers reverse transcription of a DNA fragment that activates translation of a toxin to kill the infected cell.
Reposted by Vijay Ramani
🚨 🚨 🚨 New preprint alert!!! 🚨 🚨 🚨
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
October 21, 2025 at 9:59 AM
🚨 🚨 🚨 New preprint alert!!! 🚨 🚨 🚨
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
Reposted by Vijay Ramani
Our collab w. V Goel, @nicholas-aboreden.bsky.social , J Jusuf, G Blobel, L Mirny, @irate-physicist.bsky.social out in @natsmb.nature.com www.nature.com/articles/s41...
Was co-submitted with @allanaschooley.bsky.social @jobdekker.bsky.social whose paper should also come out soon
Brief thread 👇
Was co-submitted with @allanaschooley.bsky.social @jobdekker.bsky.social whose paper should also come out soon
Brief thread 👇
October 20, 2025 at 6:36 PM
Our collab w. V Goel, @nicholas-aboreden.bsky.social , J Jusuf, G Blobel, L Mirny, @irate-physicist.bsky.social out in @natsmb.nature.com www.nature.com/articles/s41...
Was co-submitted with @allanaschooley.bsky.social @jobdekker.bsky.social whose paper should also come out soon
Brief thread 👇
Was co-submitted with @allanaschooley.bsky.social @jobdekker.bsky.social whose paper should also come out soon
Brief thread 👇
Reposted by Vijay Ramani
Hello Boston! The lab is delighted to be at #ASHG25🧬
Check out our talks over the next few days - all unpublished stories.
Kicking things off is @michaelherger.bsky.social presenting "Saturation mutagenesis of 37 human splicing factor genes with pooled prime editing". Today @2pm, Rm205abc
Also 👇
Check out our talks over the next few days - all unpublished stories.
Kicking things off is @michaelherger.bsky.social presenting "Saturation mutagenesis of 37 human splicing factor genes with pooled prime editing". Today @2pm, Rm205abc
Also 👇
October 15, 2025 at 2:42 PM
Hello Boston! The lab is delighted to be at #ASHG25🧬
Check out our talks over the next few days - all unpublished stories.
Kicking things off is @michaelherger.bsky.social presenting "Saturation mutagenesis of 37 human splicing factor genes with pooled prime editing". Today @2pm, Rm205abc
Also 👇
Check out our talks over the next few days - all unpublished stories.
Kicking things off is @michaelherger.bsky.social presenting "Saturation mutagenesis of 37 human splicing factor genes with pooled prime editing". Today @2pm, Rm205abc
Also 👇
Reposted by Vijay Ramani
Super excited about first Shendure/Baker Lab collaboration & preprint on a multiplex sequencing-based strategy for screening de novo proteome editors in mammalian cells. Kudos to the brilliant Chase Suiter (not here) & @greenahn.bsky.social on the work! Preprint here:
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
October 14, 2025 at 6:45 PM
Super excited about first Shendure/Baker Lab collaboration & preprint on a multiplex sequencing-based strategy for screening de novo proteome editors in mammalian cells. Kudos to the brilliant Chase Suiter (not here) & @greenahn.bsky.social on the work! Preprint here:
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Vijay Ramani
Lab’s 1st preprint!
Menstruation is understudied due to societal taboos + a biological challenge: mice (a key system for research + drug discovery) don’t menstruate.
@cagricevrim.bsky.social made menstruating mice + used them to discover early events in menstruation.
He is on the job market!
Menstruation is understudied due to societal taboos + a biological challenge: mice (a key system for research + drug discovery) don’t menstruate.
@cagricevrim.bsky.social made menstruating mice + used them to discover early events in menstruation.
He is on the job market!
I’m thrilled to share my postdoc work and the first paper from the McKinley Lab! 🎉
@karalmckinley.bsky.social
We built the first transgenic model of menstruation in mice.
We used it to uncover how the endometrium organizes and sheds during menstruation. 🧪
www.biorxiv.org/content/10.1...
🧵
@karalmckinley.bsky.social
We built the first transgenic model of menstruation in mice.
We used it to uncover how the endometrium organizes and sheds during menstruation. 🧪
www.biorxiv.org/content/10.1...
🧵
Induction of menstruation in mice reveals the regulation of menstrual shedding
During menstruation, an inner layer of the endometrium is selectively shed, while an outer, progenitor-containing layer is preserved to support repeated regeneration. Progress in understanding this co...
www.biorxiv.org
October 10, 2025 at 1:26 PM
Lab’s 1st preprint!
Menstruation is understudied due to societal taboos + a biological challenge: mice (a key system for research + drug discovery) don’t menstruate.
@cagricevrim.bsky.social made menstruating mice + used them to discover early events in menstruation.
He is on the job market!
Menstruation is understudied due to societal taboos + a biological challenge: mice (a key system for research + drug discovery) don’t menstruate.
@cagricevrim.bsky.social made menstruating mice + used them to discover early events in menstruation.
He is on the job market!