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Posts by Hanneke Vlaming

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
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

Do you want to understand how RNA #splicing decisions are made? We‘ve got a PhD position open for you (see 👇👇)!!
Please share #RNAsky and RT!

tinyurl.com/4ztu9cb9

2 months ago 9 12 0 0

Yes! Do you feel like coming over for a seminar here and chatting? (probably can coordinate more offline :))

3 months ago 0 0 1 0

Very brief scientific background: I am particularly interested in the mechanisms behind early transcription termination. Approaches we often use include CRISPR screens and nascent RNA sequencing after rapid depletions. Bringing your own project ideas and expertise is also encouraged!

3 months ago 0 0 0 0
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Postdoc Position in Gene Regulation Does the process of transcription excite you? Join our supportive team!

I am offering a fully-funded position for 3 years (evaluation after 1y). We're located in lovely Utrecht, and embedded in a wonderful research environment. More information and apply button here: www.uu.nl/en/organisat...
Please apply or share if the position suits you / you know someone suitable!

3 months ago 2 0 1 0

The Vlaming lab continues to grow!
It's an exciting time in the Vlaming lab: we've just had our 2nd PhD student join, and the 3rd is joining in February. Now, we're looking to recruit a postdoc!

3 months ago 15 9 1 0
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Congratulations, looks fascinating!

3 months ago 1 0 1 0

👏👏👏 Congrats Chris, looking forward to reading!

6 months ago 0 0 1 0

And for you!! Congratulations!
There have now been at least 3 starting grants earned by participants of that one Epigenetics course in Paris in 2011, with maybe 20-25 participants? Pretty impressive!

7 months ago 1 0 0 0

Getting this grant took several attempts and lots of support from my past advisors, current colleagues and many other science friends. Thank you to everyone who helped me prepare by proofreading, doing practice talks or sharing advice or encouragement!!

7 months ago 5 0 1 0
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PhD position in Gene Regulation Are you excited about studying the crucial process of transcription? Join our supportive, young and growing team!

As part of this grant, I have a vacancy out for a PhD student to join our super nice team. It closes on September 9 (Tuesday).
If you are or know a good prospective PhD student, excited about studying transcription, please (suggest them to) apply here: www.uu.nl/en/organisat...

7 months ago 7 5 1 0

Thrilled to be one of the ERC StG awardees this year! It will allow my team to further delve into the puzzle of what regulates the fate of RNA Polymerase II during early elongation: will it terminate early, or elongate happily ever after?

7 months ago 47 2 13 0

Very proud of our paper on "scrambling-by-hopping" LADs, which was just published: www.nature.com/articles/s41.... Congrats to Lise Dauban and the rest of the team – this was a real tour-de-force!

7 months ago 58 24 0 0
Fragile Nucleosome Fall Seminars:
September 10    Grace Bower, Kvon Lab @ UC Irvine, USA
    Jennifer Phillips-Cremins, UPenn, USA

September 24    Ali Wilkening, Sanulli Lab @ Stanford, USA
    Juanma Schvartzman, Columbia University, USA

October 8    Sanim Rahman, Greenberg Lab @ UPenn, USA
    Alex Federation, Talus Bio, USA

October 22    Alice Laigle, Croll Lab @ University of Neuchâtel, Switzerland
    Seungsoo Kim, UC Irvine, USA

November 5    Hannah Long, University of Edinburgh, UK
    Jeff Vierstra, Altius Institute, USA

November 19    Ishtiaque Hossain, Pastor Lab @ McGill, Canada
    Sarah Teichmann, University of Cambridge, UK

December 3    María Mariner Faulí, Rada Iglesias Lab @ IBBTEC, Spain
    Jonathan Henninger, Carnegie Mellon, USA

December 17    Rebecca Berrens, Oxford University, UK
    Jean-Benoit Lalanne, University of Montreal, Canada

Fragile Nucleosome Fall Seminars: September 10 Grace Bower, Kvon Lab @ UC Irvine, USA Jennifer Phillips-Cremins, UPenn, USA September 24 Ali Wilkening, Sanulli Lab @ Stanford, USA Juanma Schvartzman, Columbia University, USA October 8 Sanim Rahman, Greenberg Lab @ UPenn, USA Alex Federation, Talus Bio, USA October 22 Alice Laigle, Croll Lab @ University of Neuchâtel, Switzerland Seungsoo Kim, UC Irvine, USA November 5 Hannah Long, University of Edinburgh, UK Jeff Vierstra, Altius Institute, USA November 19 Ishtiaque Hossain, Pastor Lab @ McGill, Canada Sarah Teichmann, University of Cambridge, UK December 3 María Mariner Faulí, Rada Iglesias Lab @ IBBTEC, Spain Jonathan Henninger, Carnegie Mellon, USA December 17 Rebecca Berrens, Oxford University, UK Jean-Benoit Lalanne, University of Montreal, Canada

We're super excited to announce the entire lineup for the Fall season of Fragile Nucleosome Seminars, starting on Sept 10th at 1200 EDT / 1600 UTC with @gracebower.bsky.social and @creminslab.bsky.social!

register here for the entire series: us06web.zoom.us/webinar/regi...

7 months ago 67 36 0 8
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IWS1 positions downstream DNA to globally stimulate Pol II elongation - Nature Communications Although IWS1 has been implicated in transcription-coupled processes, its direct role in RNA polymerase II function remained undefined. Here, the authors demonstrate that IWS1 enhances Pol II elongati...

Also check out related work: www.nature.com/articles/s41...

7 months ago 5 3 0 0
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🧬 Transcription elongation by RNA polymerase II relies on a web of elongation factors. Our new work shows how IWS1 acts as a modular scaffold to stabilize & stimulate elongation. Fantastic work by Della Syau! www.biorxiv.org/content/10.1...

7 months ago 57 23 1 1

Could you add me too? Thanks!

7 months ago 0 0 1 0
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Activity of most genes is controlled by multiple enhancers, but is there activation coordinated? We leveraged Nanopore to identify a specific set of elements that are simultaneously accessible on the same DNA molecules and are coordinated in their activation. www.biorxiv.org/content/10.1...

8 months ago 98 39 2 2
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PhD position in Gene Regulation Are you excited about studying the crucial process of transcription? Join our supportive, young and growing team!

The Vlaming lab is expanding! If you are or know a good prospective PhD student, excited about studying transcription, please (suggest them to) apply here: www.uu.nl/en/organisat...
My biased opinion: exciting topic, super nice colleagues, and great research environment in a lovely city.

8 months ago 13 17 0 0
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🚨 New preprint from our labs (STOP lab @stoplab.bsky.social & Nojima lab @pol2rna.bsky.social @pyrolyn.bsky.social)! We've been digging into how chromatin remodeler SETD2 controls the start and end of transcription 👇 www.biorxiv.org/cgi/content/... (1/5)

9 months ago 12 6 6 0
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Structural basis of RECQL5-induced RNA polymerase II transcription braking and subsequent reactivation - Nature Structural & Molecular Biology Using cryo-electron microscopy and biochemistry, Zhang et al. reveal that the DNA helicase RECQL5 and the transcription-coupled DNA repair complex coordinate to regulate transcription elongation rates...

A transcription balance required for genome stability 🧬⚖️

Our work on RNA Pol II transcription speed control by the DNA helicase RECQL5 and the transcription-coupled DNA repair complex is now on @natsmb.nature.com

#CryoEM #transcription #genomestability

www.nature.com/articles/s41...

9 months ago 21 4 1 1
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Excited to share our latest work! We found transcription factor SPT6 and phosphorylated Pol II CTD help recruit U1 snRNP to elongating Pol II, allowing efficient co-transcriptional splicing.

Glad to be featured in the Editors’ Highlights!

www.nature.com/articles/s41...

#splicing #cryoEM

9 months ago 71 21 1 0

Big thank you to co-lead @camimoso.bsky.social and to @adelmanlab.bsky.social. Further support from Nathalie in my group (first paper with @utrechtuniversity.bsky.social affiliation 🤩!) and Allison.

9 months ago 3 0 0 0

This manuscript was a long time in the making (started while Claudia and I were both still in the Adelman lab), but thankfully going from preprint to published in @genesdev.bsky.social was a smooth process!

9 months ago 2 0 1 0

Happy to share this paper! We uncovered that good 5' splice sites protect against ZC3H4/Restrictor's promiscuous role, and that its role is to suppress elongation and indirectly cause termination. Looking forward to learning more about this protein in the future!

9 months ago 32 10 3 1

Finally joined this platform! Looking forward to reconnect with many old friends and colleagues, and connect with new people too! Now let's see if I can moderate my 'intake', haha.

9 months ago 6 0 2 0