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Virginia Pimmett

@pimmett

Postdoc in the Lagha lab at IGMM in Montpellier FR // Drosophila fan, dev bio fan, microscope fan, hockey fan // πŸ‡¨πŸ‡¦->πŸ‡«πŸ‡·

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01.01.2024
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Latest posts by Virginia Pimmett @pimmett

Sometimes we feel like one of those giant unethical experiments psychologists got to run in the 1960s, except the only research goal is to test the maxim that 'there's no such thing as a stupid question'.

11.02.2026 20:54 πŸ‘ 56 πŸ” 7 πŸ’¬ 7 πŸ“Œ 0
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1/3 New bioRxiv preprint from the lab: β€œMinute-scale coupling of chromatin marks and transcriptional bursts”. Led by Xiohui Gao & Chaebeen Ko. bioRxiv : www.biorxiv.org/cgi/content/...

11.02.2026 04:06 πŸ‘ 37 πŸ” 17 πŸ’¬ 1 πŸ“Œ 1

It has yet to be a great day when my hometown comes up on BtB...

04.02.2026 07:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Programmatic design and editing of cis-regulatory elements The development of modern genome editing and DNA synthesis has enabled researchers to edit DNA sequences with high precision but has left unsolved the problem of designing these edits. We introduce Le...

After a huge amount of work w/ @alex-stark.bsky.social's group, a new version of our Ledidi preprint is now out!

In an era of AI-designed proteins, the next leap will be controlling when, where, and how much of these proteins are expressed in living cells.

www.biorxiv.org/content/10.1...

10.12.2025 15:18 πŸ‘ 60 πŸ” 26 πŸ’¬ 2 πŸ“Œ 0

Can one map the genome-wide binding (1) and its protein partners (2) simultaneously from the same sample?

Yes, one can. with CUT&ID βœ‚οΈπŸͺͺ

Spearheaded β€” singlehandedly β€” by @annanordin.bsky.social

No need of transgenesis, cloning and overexpression.

Check it out, it's fast and its works.

13.12.2025 07:00 πŸ‘ 153 πŸ” 58 πŸ’¬ 4 πŸ“Œ 7

Dead internet theory gets yet another point on the board.

11.12.2025 15:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

All travelers from ESTA countries (yes the ones on visa waiver programs) will have to disclose 5 years of social media + huge amounts of personal data to enter the US now. All US academic associations should now meet outside the US if we want to meet our international colleagues.

10.12.2025 04:27 πŸ‘ 439 πŸ” 234 πŸ’¬ 17 πŸ“Œ 21

Single-Molecule DNA Footprinting and Transcription Imaging Reveal the Molecular Mechanisms of Promoter Dynamics https://www.biorxiv.org/content/10.1101/2025.11.26.690466v1

27.11.2025 03:19 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Thermodynamic principles link in vitro transcription factor affinities to single-molecule chromatin states in cells In vitro-derived insights into features that drive transcription factor binding to DNA, including motif-adjacent sequence, enable prediction of chromatin states and transcription factor occupancy in cells.

Now online! Thermodynamic principles link in vitro transcription factor affinities to single-molecule chromatin states in cells

26.11.2025 19:51 πŸ‘ 18 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0

Are you an early-stage graduate student (2nd or 3rd year) or early-stage postdoc based in the US or Canada, working primarily in Drosophila? Would you like to help improve the experience of all trainees working in Drosophila research? If so, read on.

(Please repost to reach a broad audience.)

12.11.2025 04:49 πŸ‘ 89 πŸ” 182 πŸ’¬ 1 πŸ“Œ 2
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🧬 π‹β€™πšπ«π­ 𝐝𝐞́π₯𝐒𝐜𝐚𝐭 𝐝𝐞 𝐟𝐚𝐒𝐫𝐞 𝐭𝐚𝐒𝐫𝐞 π₯𝐞𝐬 π πžΜ€π§πžπ¬
Des scientifiques de l'IGMM utilisent l’embryon de drosophile pour dΓ©montrer que la rΓ©pression de l’expression des gΓ¨nes est un mΓ©canisme beaucoup plus complexe qu’attendu.

πŸ“– πŸ‘‰ lnkd.in/dPqUREuf
πŸ“· Β© Mounia Lagha et Virginia Pimmett

30.09.2025 06:35 πŸ‘ 6 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
FlyBase:Contribute to FlyBase - FlyBase Wiki

FlyBase needs your help! We ask that European labs continue to contribute to Cambridge, UK FlyBase, whereas US and other non-European labs can contribute to US FlyBase. For more information and how to donate: wiki.flybase.org/wiki/FlyBase...

15.08.2025 12:45 πŸ‘ 130 πŸ” 159 πŸ’¬ 3 πŸ“Œ 26
Zeiss Axio A.1 and a small sample encased in a museum exhibit.

Zeiss Axio A.1 and a small sample encased in a museum exhibit.

On vacation but still managed to find a microscope. Spouse is woefully unsurprised.

12.08.2025 12:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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From genes to patterns: five key dynamical systems concepts to decode developmental regulatory mechanisms Summary: Dynamical systems theory provides a powerful quantitative and intuitive framework to understand developmental processes. This Primer brings key concepts of this framework to the ever-growing ...

A Summer reading recommendation: new primer in @dev-journal.bsky.social explains how dynamical systems theory unlocks the logic of developmental patterning

Everything from bistable switches & oscillators to phase portraits & more with Python code to explore

journals.biologists.com/dev/article/...

04.08.2025 08:44 πŸ‘ 95 πŸ” 36 πŸ’¬ 0 πŸ“Œ 1
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A PhD in biology, biophysics or a closely related field is required by the start of the appointment. Interdisciplinary profiles are strongly encouraged to apply. - work environment:

πŸš€ @hfspo.bsky.social funded Postdoc
3-year contract
Start after Dec 2025
πŸ“© Apply: mounia.lagha@igmm.cnrs.fr
Subject: "[HFSP Post doc application]"
πŸ“Ž CV + short research summary + cover letter
πŸ”— More info: euraxess.ec.europa.eu/jobs/363437
@laghalab.bsky.social @umontpellier.bsky.social @cnrs.fr

28.07.2025 08:18 πŸ‘ 5 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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We are hiring! "Researcher in DNA-Based Information Processing Systems" (PhD or postdoc level). Co-supervision by Prof. Ralf Reussner (KIT computer science) and myself (biological systems). Combination of experiments and computational work. Please Apply / Repost!

www.pse.kit.edu/english/karr...

29.07.2025 06:24 πŸ‘ 9 πŸ” 12 πŸ’¬ 1 πŸ“Œ 0

Come and join the team! It's a stellar group of people and some really interesting questions to dissect with all kinds of cool tools in play.

28.07.2025 17:08 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Tom Lehrer - We Will All Go Together When We Go
Tom Lehrer - We Will All Go Together When We Go YouTube video by The Tom Lehrer Wisdom Channel

Tom Lehrer died today. He was one of the great comedians our culture ever produced. Without Tom, there's no Weird Al, probably no that entire branch of comedy.

He went alone and beat the odds.

youtu.be/frAEmhqdLFs?...

27.07.2025 23:43 πŸ‘ 4193 πŸ” 790 πŸ’¬ 97 πŸ“Œ 53

Congratulations! Looking forward to reading the final version ASAP.

23.07.2025 08:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Zincore, an atypical coregulator, binds zinc finger transcription factors to control gene expression Zinc finger proteins (ZNFs) are the largest family of transcription factors, yet how they activate gene expression remains unclear. In this study, we identified Zincore, a protein complex consisting o...

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

04.07.2025 11:00 πŸ‘ 128 πŸ” 47 πŸ’¬ 3 πŸ“Œ 3
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Synergistic DNA and RNA binding of the Hox transcription factor Ultrabithorax coordinates splicing and shapes inΒ vivo homeotic functions Abstract. The dual interaction of many transcription factors (TFs) with both DNA and RNA is an underexplored issue that could fundamentally reshape our und

πŸŽ‰ Thrilled to share our new paper in @narjournal.bsky.social!
We uncover how the Hox TF Ultrabithorax controls alternative splicing to shape muscle patterning and homeotic identity 🧬 @igmm-montpel.bsky.social
πŸ”— doi.org/10.1093/nar/...

04.07.2025 17:40 πŸ‘ 39 πŸ” 12 πŸ’¬ 2 πŸ“Œ 1
A meme-style comic panel with three parts. Left: A stylized enhancer with a mutation, surrounded by colored blocks representing functional motifs, a neural network diagram, chromatin accessibility signal traces, and a sequence motif. Two cartoon mouse embryos below show different LacZ reporter activity patterns. Top right: A hand hovers anxiously between two red buttons labeled β€œExperiments” and β€œAI,” with the caption β€œHOW DO ENHANCERS REALLY WORK?” Bottom right: A sweating superhero wipes his forehead, looking stressed about the difficult choice.

A meme-style comic panel with three parts. Left: A stylized enhancer with a mutation, surrounded by colored blocks representing functional motifs, a neural network diagram, chromatin accessibility signal traces, and a sequence motif. Two cartoon mouse embryos below show different LacZ reporter activity patterns. Top right: A hand hovers anxiously between two red buttons labeled β€œExperiments” and β€œAI,” with the caption β€œHOW DO ENHANCERS REALLY WORK?” Bottom right: A sweating superhero wipes his forehead, looking stressed about the difficult choice.

Textbooks: β€œEnhancers are just a bunch of TFBSs”

But how do they REALLY work?

New paper with many contributors here @berkeleylab.lbl.gov, @anshulkundaje.bsky.social, @anusri.bsky.social

A 🧡 (1/n)

Free access link: rdcu.be/erD22

18.06.2025 17:55 πŸ‘ 164 πŸ” 79 πŸ’¬ 2 πŸ“Œ 5

We currently have a call for support that has gone out to European labs, to support FlyBase-UK. We are asking our colleagues from labs in the US and other countries to wait for a similar call to them that will go out in the near future, to support the US sites. We thank you for your patience.

03.06.2025 21:17 πŸ‘ 81 πŸ” 114 πŸ’¬ 0 πŸ“Œ 12
Images from the linked preprint showing Wingless stainings in the Drosophila wing imaginal disc. Targeting vps15 with two indepependent RNAi lines (paper also shows the same with a third line) does not result in a phenotype. In contrast, targeting vps15 with two independent sgRNA constructs and Cas9 results in strong accumulation of Wingless protein in perturbed cells.

Images from the linked preprint showing Wingless stainings in the Drosophila wing imaginal disc. Targeting vps15 with two indepependent RNAi lines (paper also shows the same with a third line) does not result in a phenotype. In contrast, targeting vps15 with two independent sgRNA constructs and Cas9 results in strong accumulation of Wingless protein in perturbed cells.

Why use #CRISPR in #Drosophila when RNAi works so well? Because for some genes well is not good enough.

Check out new preprint from the lab demonstrating a role for Vps15 in Wingless trafficking. Something that was missed in several RNAi screens.

www.biorxiv.org/content/10.1...

26.05.2025 07:29 πŸ‘ 39 πŸ” 17 πŸ’¬ 2 πŸ“Œ 1

incredible, he's actually going down, what a perfect end to the night

how much is Poilievre cursing Trump out right now, he's got to be fucking livid

29.04.2025 07:04 πŸ‘ 1735 πŸ” 159 πŸ’¬ 46 πŸ“Œ 7

check out our latest paper investigating how TF concentration affects transcription dynamics @dev-journal.bsky.social. optogenetics+mRNA #imaging in #drosophila #embryos. joint effort with @stathopouloslab.bsky.social @caltech.edu. bravo to @pimmett.bsky.social and J.McGehee.

02.04.2025 08:03 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Marine Le Pen found guilty in EU funding embezzlement case It could mean the leader of the far-right National Rally is banned from standing in the 2027 French presidential election.

It's always the people you most expect
www.bbc.com/news/article...

31.03.2025 09:38 πŸ‘ 217 πŸ” 27 πŸ’¬ 9 πŸ“Œ 1

A thread about power.
There is a lesson here, about how beating autocrats like Trump involves STANDING UP to them, not backing down. Find a way to stand up.

Canada's PM told Trump to fuck off, and now Trump is treating him better.
1/

28.03.2025 23:40 πŸ‘ 149 πŸ” 27 πŸ’¬ 3 πŸ“Œ 1
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Celebrating 10 years of our lab with a new preprint:
www.biorxiv.org/content/10.1...
How does enhancer location within a TAD control transcriptional bursts from a cognate promoter?
Experiments by Jana TΓΌnnermann and modelling by Gregory Roth

29.03.2025 12:45 πŸ‘ 149 πŸ” 58 πŸ’¬ 6 πŸ“Œ 2

My internal blend of optimism and paranoia hopes otherwise, but nothing disappoints me so predictably quite like late-stage capitalism.

24.03.2025 09:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0