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Posts by Jackson Hoffman

The PALS Summer School in Transcriptomics, I promise, will be a unique experience
www.trippus.net/summerschool...
23-26 June 2026 in a hidden Swedish paradise 🇸🇪🫎

We have extended the deadline to May 15 or until availability

@scilifelab.se @kawresearch.bsky.social @remeseiro-lab.bsky.social

4 days ago 3 6 0 0
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Postdoctoral Scientist | PNAC | Dr Ana Tufegdzic Vidakovic | LMB 2142 - Cambridge, Cambridgeshire (GB) job with MRC Laboratory of Molecular Biology (LMB) | 12857096 Postdoctoral Scientist Salary £42,694 per annum pro rata Fixed term for 3 years MRC Laboratory of Molecular Biology, Cambridge, UK Applications are...

We are looking for a postdoc to join us on the quest for understanding RNA Pol II destruction machines! If you are curious why more than 80% of Pol II are removed from genes, check out the post below:

www.nature.com/naturecareer...

2 weeks ago 11 12 0 2
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Join us this Wednesday to hear about fascinating research from @kashyapchhatbar.bsky.social and @a-radzisheuskaya.bsky.social!

If you're not already registered, click here to sign up: us06web.zoom.us/webinar/regi...

you can also join the conversation at our discord: discord.com/invite/dXqT89r

2 weeks ago 15 8 0 1

Ugghhh

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OK Kids, our ERK story is finally heading out into the world. After 9 years of having funding, losing funding, losing staff, getting funding, gaining staff...it's ready!

We discovered a novel stage of what is an otherwise extensively studied process: how cells respond to extracellular signals. 1/n

3 weeks ago 21 9 5 1
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I defended my PhD 10 years ago today. That was the least remarkable thing that happened that day. Sharing something I wrote about it last year. Since then "the horrors persist but so do we." And with dignity.

4 weeks ago 1710 569 50 30
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ChromSMF preprint is out!🚀
tinyurl.com/ChromSMF

We often piece together chromatin regulation layer by layer from separate assays. But this can be limiting!

In @arnaudkr.bsky.social's lab, we developed a method to directly study multiple layers on the same DNA molecule! 🧬

What does this unlock? ⬇️

4 weeks ago 111 50 3 2

Congrats to Pelin on the new preprint examining hormone responsiveness in mammary organoids! Excited to see what she does next with the system she's developed 🧬!

www.biorxiv.org/content/10.6...

4 weeks ago 6 1 0 0

Congrats to Pelin on the new preprint examining hormone responsiveness in mammary organoids! Excited to see what she does next with the system she's developed 🧬!

www.biorxiv.org/content/10.6...

4 weeks ago 6 1 0 0
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It’s tradition for labs to make the defense posters for the students defending! Huge shoutout to mine for hitting the nail on the head lol. Interested in what I’ve been doing during my PhD (both science and non-science!)? Message me for the Zoom link or come in-person if you’re in the area 😊

1 month ago 32 5 4 0
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A dual role for CTCF in development CTCF is an essential DNA binding protein whose absence leads to embryonic lethality. CTCF is primarily known for its role in 3D genome organization where its N-terminal domain interacts with cohesin to anchor chromatin loops. How CTCF facilitates proper embryonic development remains unclear, necessitating temporal control to resolve its stage-specific functions. By combining gastruloids, an in vitro model of embryonic development, with a degron system to rapidly deplete CTCF at defined timepoints, we show that early CTCF depletion impairs early gastruloid morphogenesis. Surprisingly, ATAC-seq and time-resolved RNA-seq revealed that differentiation was unaffected. CTCF binding is strongly enriched at promoters of downregulated genes. Re-expression of a CTCF variant with an N-terminal truncation, incapable of looping, was sufficient to rescue the expression of CTCF-promoter bound genes and the defects in morphogenesis. However, extended culture (up to 168 hours) of gastruloids reconstituted with N-terminal truncated CTCF led to their collapse. Our work shows that CTCF has a dual function in early mammalian development: at early stages CTCF regulates developmentally important genes through promoter binding, while at later stages its looping function is required for correct development. ### Competing Interest Statement The authors have declared no competing interest. European Research Council, https://ror.org/0472cxd90, 637587, 865459 Dutch Research Council, https://ror.org/04jsz6e67, 016.161.316, VI.C.222.049 Dutch Cancer Society, https://ror.org/0368jnd28, N/A

🧵 CTCF is essential for embryonic development, but why has remained unclear. By combining gastruloids with a temporal degron system, we uncovered a surprising dual function — and it changes how we think about CTCF's role in development. 1/8 www.biorxiv.org/content/10.6...

1 month ago 112 55 7 4
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We have another exciting #FragileNucleosome seminar for you next week! @sunil-k-pradhan.bsky.social and
Genevieve Fourel will share their fascinating stories on chromatin and genome organization.

Click here to register: us06web.zoom.us/webinar/regi...

1 month ago 6 7 0 1
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🫣 well, here we go!

1 month ago 19 2 1 0

daylight savings in the USA skipped us forward 1 hour, so we might be starting 1 hour earlier for some. Check your time against 9:00 PDT / 12:00 EDT (instead of PST/EST) to ensure you've got the correct start time for tomorrow!

1 month ago 1 1 0 0
Mechanisms of gene regulation by SRCAP and H2A.Z - Nature Communications SRCAP depletion causes rapid replacement of H2A.Z by H2A, leading to upregulation of lineage-specific transcription factors. SRCAP also prevents pioneer transcription factor binding by steric hindranc...

How do the H2A.Z histone variant and its dedicated chromatin remodeller SRCAP regulate gene expression ?
Beautiful work from @armelletollenaere.bsky.social now published @ www.nature.com/articles/s41...

1 month ago 29 15 2 1
Flyer for symposium: https://ctrlepiedit.sciencesconf.org/

Flyer for symposium: https://ctrlepiedit.sciencesconf.org/

Very excited to announce the FIRST symposium on epigenome editing! These tools are becoming widely used in mol bio, ag & therapy. It's time to bring leaders together to discuss this rapidly growing and exciting field. And why not in Paris! Please register & share! (1/2) ctrlepiedit.sciencesconf.org

1 month ago 84 58 3 6
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⚡This Wednesday! 🥁We've got two exciting chromatin talks coming up from @almassalha.bsky.social and @carmeloferrai.bsky.social
🐣If you haven't registered for the series, please register and join us: us06web.zoom.us/webinar/regi...

1 month ago 20 8 1 4
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Delighted to see this published: H3K115 acetylation is associated with fragile nucleosomes at CpG island promoters and active regulatory sites. Great work from all contributors; Yatendra Kumar, @illingworth-lab.bsky.social @eliasfriman.bsky.social @helink.bsky.social

doi.org/10.7554/eLif...

1 month ago 37 10 0 1
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Wahoooo it’s online!!! 🎉🥳

Excited to share a glimpse into my postdoc work with @chorye.bsky.social at Duke where @stefan-golas.bsky.social and I developed TurboPRANCE, a robotics platform to scale and enable new phage-assisted continuous evolutions. bskytorial party!👇 1/n

1 month ago 10 3 1 0
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Evolution navigated billions of challenges to get to us to where we are today. Directed evolution compresses this to a 1D axis.

Imagine if you could sample 200 dimensions at once, with data to boot 📈

First @chorylab.bsky.social PACE preprint on our new system to tackle this: bit.ly/turboprance

1 month ago 23 11 1 1

Incredibly proud to share our new preprint, lead by the Incomparable Rithika Sankar.
Here we temporally dissect the role of FACT in mES cells, finding that FACT loss drives progressive deterioration of chromatin architecture, leading to transcriptional collapse.
www.biorxiv.org/content/10.6...

1 month ago 44 26 1 1

Three @biorxivpreprint.bsky.social preprints on acute depletion of FACT in ES cells. First, from my colleague at Pitt Sarah Hainer's lab 1/ www.biorxiv.org/content/10.6...

1 month ago 17 7 2 0

Join us tomorrow for two exciting enhancer talks!

1 month ago 6 4 0 0
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Preprint alert 🚨Happy to share my first Posdoc manuscript from the Vos lab @voslab.org. We introduce GATO-seq, a high-throughput, fully in vitro technique that maps RNA polymerases at base pair resolution over time. Using it, we found a new pause state of Pol II: sidetracking tinyurl.com/superpause

2 months ago 14 4 3 0
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Next week on Fragile Nucleosome:

🧬 Pavan Choppakatla from the Levine lab will share his work on long-distance enhancer-promoter search

🧬 @moorejille.bsky.social will tell us about millions of enhancers in the registry of candidate CREs

Register here and join us!: us06web.zoom.us/webinar/regi...

2 months ago 8 4 0 1
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Looking forward to it!

2 months ago 12 3 0 0

Updated job posting description for our postdoc recruitment to include interest in immuno-oncology

4 months ago 3 3 0 1

Interested in transcriptional regulation, enhancers and 3D genome folding?

In this new study we wondered about the role of cohesin loading at enhancers for long-range transcriptional control

www.biorxiv.org/content/10.6...

detailed 🧵👇

2 months ago 67 33 1 3

Tomorrow!

Two exciting talks on tap from @ambystoma22.bsky.social and @epijenatics.bsky.social at @fnucleosome.bsky.social seminar!

2 months ago 7 1 0 0