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.

(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.

RNAs outside of cells?! How did they get there? (Thread coming soon 👀) www.biorxiv.org/content/10.1...

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...

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/...

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.

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.

🚨 🚨 🚨 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

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 👇

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 The lab is delighted to be at #ASHG25🧬 Check out our talks over the next few days - all unpublished stories.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 👇

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...

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!

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... 🧵

David Simon, creator of ‘The Wire’, being interviewed by Ari Shapiro (NPR)

Congratulations @karalmckinley.bsky.social & lab on their groundbreaking recent preprint establishing + characterizing a chemically inducible model of menstruation in mouse: www.biorxiv.org/content/10.1... My jaw dropped when I heard this presented earlier this year. Incredible.

New paper: Hepatic ceramide synthesis links systemic inflammation to organelle dysfunction in cancer Liu, Miao, Wang, Ezequiel, Kim, Zhang, Sun, Binari, Asara, Yanhui Hu, Goncalves, Janowitz, Perrimon doi: doi.org/10.1101/2025...

Independent research fellowships leading to tenured positions at the John Innes Centre. Repost = nice. Thank you very much!!!

Today I am so pleased to present our work on how chromatin remodelers affect mesoscale chromatin organization. www.science.org/doi/10.1126/...

Congratulations @jbuenrostro.bsky.social!!!

Genes are not On/Off switches. In a new preprint we show that HDAC3 is key to establish correct transcriptional dose in development. Gr8 work from N. Stamidis @ucph.bsky.social and collab. @jamiehackett.bsky.social @gregersenlab.bsky.social . Huge thx to all authors! www.biorxiv.org/content/10.1...

EEE meeting is BACK! Early Embryogenesis & Epigenetics conference in Berlin 02/2026. Checkout great program and over 12 slots for (not so) short talks for submitted abstracts!. Early registration now open - w.molgen.mpg.de/embryo2026

Asking BlueSky for help: For a review, I am trying to accurately credit the first paper that measured pairwise 3D distances between 2 pieces of DNA on the same chromosome (or cosmid). Is Trask 1989 the first? I know of earlier single-locus papers (1982). www.sciencedirect.com/science/arti...

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)

1/ 🧵 I am excited to share a new preprint from our group: Single-cell Dam&T-seq during mouse corticogenesis reveals how genome–lamina interactions regulate long neuronal genes. doi.org/10.1101/2025... #Neurodevelopment #Epigenetics @hubrechtinstitute.bsky.social @oncodeinstitute.bsky.social

TDAC-seq is a method for targeted chromatin accessibility profiling that uses cytidine deaminases and long-read sequencing to resolve the effects of CRISPR edits on single chromatin fibers. www.nature.com/articles/s41...

Major overhaul on my personal website is now live! jlsteenwyk.com

This could be a neat method for species detection in #metagenomic datasets, but why on earth are we simulating PacBio and ONT error rates at >10%? 🫣🤔🫠 PacBio HiFi has had >99% accuracy since 2019. Very hard to interpret the results based on 90% accuracy. www.biorxiv.org/content/10.1...

New preprint with @gfudenberg.bsky.social We find the rate of cohesin loop extrusion in cells is set by NIPBL dosage and tunes many aspects of chromosome folding. This provides a molecular basis for NIPBL haploinsufficiency in humans. 🧵👇 www.biorxiv.org/content/10.1...

Thoughts on Illumina pip-seq in general and vs 10X?

Thrilled to share our latest work, just published in @nature.com ⬇ www.nature.com/articles/s41... We discovered that PARP inhibitors 💊 trigger histone eviction from the chromatin and this creates a hidden vulnerability in PARPi resistant tumors. 🧵 (1/8)

We are excited to share our new preprint demonstrating that nucleic acid interactions with SUZ12 constrain PRC2 activity, establishing a kinetic buffer essential for targeted gene silencing and revealing vulnerabilities in diffuse midline gliomas. www.biorxiv.org/content/10.1...

Our paper is now out in final form at Nature Genetics! For those who missed the preprint, we used large-scale Perturb-seq targeting transcription factors to push primary fibroblasts into diverse transcriptional states, including those observed in cell atlas studies.

Truly a team effort from the Lesch lab @ambystoma22.bsky.social Happy to share this paper where we study the role of Smarca5 in spermatogenesis. www.pnas.org/doi/10.1073/...

if i were a better person i would do a tweetorial on our recent paper - but, hey, read the paper. its right there, waiting for you. #Giantvirus #histones are cool! their #nucleosomes are cool. check it out.! thats the tweetorial. rdcu.be/exXBX

Pretty surreal to see my artwork on the cover of Nature Genetics! Big congrats to @julianeg.bsky.social, @stemundi.bsky.social and the others, and thank you Juliane for letting me help bring your research to life visually. www.nature.com/ng/volumes/5...

New preprint! We solve a mystery you didn't know existed. Mitotic cells lack new transcription but require ongoing translation. Interphase mRNA half life is only 2-4 hrs. So how do cells arrest in mitosis for hours without depleting their transcriptomes? www.biorxiv.org/content/10.1...

How do chromatin remodelers use #IDRs to find TF binding partners? In our new Molecular Cell paper, we show that β-catenin is an adaptor that links SWI/SNF (cBAF) subunit ARID1A with binding partners via IDR-domain interactions. www.cell.com/molecular-ce...

Our new non-denaturing nanoscale 3D DNA tracing technology provides single-cell (and sister-chromatid specific!) readout of chromatin structure with 10kb genomic resolution - Check it out! www.nature.com/articles/s41... Congratulations to Kai and Oyvind!!

Super excited to share our newest story! We found that despite their well-known reliance on glucose, neutrophils also like lipids! Lipid uptake is induced by immune signals, and we think this is important in atherosclerosis and other lipotoxic metabolic diseases! www.biorxiv.org/content/10.1...

🗨️💡Great conversations during well-attended lunch time panel discussions at #EMBLSingleMolecule Panel 1️⃣: Single molecule genomics data analysis Chair: @stirlingchurchman.bsky.social Panel 2️⃣: Single molecule microscopy data analysis Chairs: @laghalab.bsky.social, Dan Larson @arnaudkr.bsky.social

Pls. share widely Calling all transposon fans & lovers of genetic innovation MOBILE GENOME welcomes you in Heidelberg, Nov. 4–7 2025 → Vibrant & friendly community → Cutting-edge talks from mechanisms to physiology → Plenty of surprises (TEs never stop innovating) submit abstract by July 29

We found a new asymmetry in the large-scale chromosome structure: sister chromatids are systematically shifted by hundreds of kb in the 5′→3′ direction of their inherited strands! The work was led by Flavia Corsi, in close collaboration with the Daniel Gerlich lab. www.biorxiv.org/content/10.1... 1/

🚨 New paper out in Nature Comms! From the Rosen, Redding and Collepardo Labs, we uncover how #nucleosome spacing fine-tunes the architecture of #chromatin condensates. 👇 A short thread on how physical #genome organization emerges from molecular interactions: www.nature.com/articles/s41...

I am very excited to share our latest work where we describe a new method to profile genome-wide chromatin transitions over time in single cells. Great collaborative effort with the van Oudenaarden group @hubrechtinstitute.bsky.social @oncodeinstitute.bsky.social www.nature.com/articles/s41....

Our new preprint 🧬🔗 www.biorxiv.org/content/10.1... BRD4-NUT forms liquid-like condensates that locally constrain nucleosomes via BRD4-mediated crosslinking— physical control of #chromatin by #LLPS transcription condensates. @semeigazin.bsky.social @katsuminami.bsky.social @masaashimazoe.bsky.social

Excited to share our latest by my postdoc Ben KS: we use statistical physics & Bayesian inference to model genome-wide perturbation outcomes. Remarkably, perturbation responses are encoded in gene "chatter" even before the perturbation–a fundamental insight with broad implications shorturl.at/2LHbw

Peace Y'all and exercise your deep breathing

America is beautiful, contradictory, unfinished. I am proud of our country even as we constantly strive to make it better, to protect and deepen our democracy, to fulfill its promise for each and every person who calls it home. Happy Independence Day. No Kings in America.

In today’s publication in Science we introduce Zincore: a novel protein of QRICH1 and SEPHS1 and functions as a transcriptional coregulator dedicated to zinc finger transcription factors. Here’s how we found it: 🧵 www.science.org/doi/10.1126/... 1/11

📖 Happy to share our recent preprint! www.biorxiv.org/content/10.1... We discovered how SINEs are kept silent: the ChAHP protein complex acts as a molecular brake on POL III transcription retrotransposons. A 🧵: