Guillaume Andrey
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guandrey.bsky.social
Guillaume Andrey
@guandrey.bsky.social
Associate Professor / enhancers - 3D genome - morphogenesis
Website: https://www.unige.ch/medecine/gede/en/research-groups/999andrey
Reposted by Guillaume Andrey
We recently reported that promoter competition can contribute to the robust insulation of gene regulatory domains (www.nature.com/articles/s41...).
We now offer a 4-years PhD contract to investigate whether the dirsuption of this regulatory mechanism can lead to congenital defects. More details 👇
November 6, 2025 at 6:37 PM
Reposted by Guillaume Andrey
Why fundamental research is fundamental to progress, seeding major breakthroughs
Editorial @nature.com this week
And 7 basic science discoveries that changed the world
nature.com/articles/d41...
nature.com/articles/d41...
October 29, 2025 at 12:58 PM
Reposted by Guillaume Andrey
What is a promoter? And how does it work?

We very happy to share our latest work trying to understand enhancer-promoter compatibility.
I am very excited about the results of @blanka-majchrzycka.bsky.social, which changed the way I think about promoters

www.biorxiv.org/content/10.1...
Enhancer-promoter compatibility is mediated by the promoter-proximal region
Gene promoters induce transcription in response to distal enhancers. How enhancers specifically activate their target promoter while bypassing other promoters remains unclear. Here, we find that the p...
www.biorxiv.org
October 16, 2025 at 3:06 PM
Reposted by Guillaume Andrey
Really excited to share our latest work led by @mattiaubertini.bsky.social and @nesslfy.bsky.social: we report that cohesin loop extrusion creates rare but long-lived encounters between genomic sequences which underlie efficient enhancer-promoter communication.
www.biorxiv.org/content/10.1...
A🧵👇
September 24, 2025 at 9:45 PM
Reposted by Guillaume Andrey
Out today. 🙏 again to everyone for this wonderful piece of work, in particular to Aurelie @aurhin.bsky.social Chase @chasebolt.bsky.social and Brent @homeobox.bsky.social. 🙏 also to the Harris lab @fish4walking.bsky.social and @neilshubin.bsky.social @biology-unige.bsky.social @college-de-france.fr
September 17, 2025 at 5:30 PM
Reposted by Guillaume Andrey
If you like transcription regulation and its mechanisms, this WIP list is for you.

I'm sure I've forgotten lots of people, so don't hesitate to let me know so I can add you to the list.

go.bsky.app/8vTgeXB
August 28, 2025 at 12:48 PM
Reposted by Guillaume Andrey
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....
Retrospective and multifactorial single-cell profiling reveals sequential chromatin reorganization during X inactivation - Nature Cell Biology
Kefalopoulou, Rullens et al. develop Dam&ChIC to assay chromatin state at two different time points in the same cell. The method was used to study the reorganization of LADs during cell division a...
www.nature.com
July 10, 2025 at 2:36 PM
Reposted by Guillaume Andrey
Intriguing plot twist 🧐

Tissue-specific changes in 3D genome folding cause enhancer hijacking in Liebenberg syndrome

But it’s NOT the overall expression level that drives the phenotype - it’s the proportion of cells hijacked into misexpressing Pitx1 that matters
July 10, 2025 at 8:35 AM
Reposted by Guillaume Andrey
The final chapter of my Pitx1 adventure is out! 1 simple question:”How do SVs that shorten enhancer-promoter distance affect limb development?” We find the impact on transcription, cell populations, epigenetics, and chromatin structure. A labour of joy with @guandrey.bsky.social & all co-authors.
July 9, 2025 at 12:55 PM
Reposted by Guillaume Andrey
Finally out! 🥳 Our paper showing how a transposable element (TE) insertion can cause developmental phenotypes is now published @natgenet.nature.com 🧬🦠🐁
Below is a brief description of the major findings. Check the full version of the paper for more details: www.nature.com/articles/s41588-025-02248-5
Enhancer adoption by an LTR retrotransposon generates viral-like particles, causing developmental limb phenotypes - Nature Genetics
Activation of an LTR retrotransposon inserted upstream of the Fgf8 gene produces viral-like particles in the mouse developing limb, triggering apoptosis and causing limb malformation. This phenotype c...
www.nature.com
July 9, 2025 at 10:05 AM
Our work bridging enhancer-promoter proximity to phenotypic outcomes in vivo is out! Shout out to @olimpiabompadre.bsky.social, to Marie Kmita's lab, and to all the co-authors. www.nature.com/articles/s41...
Liebenberg syndrome severity arises from variations in Pitx1 locus topology and proportion of ectopically transcribing cells - Nature Communications
Here the authors show that reducing enhancer-promoter distance at the Pitx1 locus increases proportion of Pitx1 forelimb expressing cells, worsening skeletal defects in Liebenberg syndrome. They also ...
www.nature.com
July 9, 2025 at 11:58 AM
Reposted by Guillaume Andrey
Our paper describing the Range Extender element which is required and sufficient for long-range enhancer activation at the Shh locus is now available at @nature.com. Congrats to @gracebower.bsky.social who led the study. Below is a brief summary of the main findings www.nature.com/articles/s41... 1/
Range extender mediates long-distance enhancer activity - Nature
The REX element is associated with long-range enhancer–promoter interactions.
www.nature.com
July 2, 2025 at 4:17 PM
Reposted by Guillaume Andrey
Postdoc🚨!

Come join our HFSP team to uncover how chromatin moves in cells and what this means for genome function! Great opportunity to combine single-cell genomics, live imaging and polymer physics in the unique mammalian retina with @andersshansen.bsky.social, Davide Michieletto & Sandra Tenreiro
Wissenschaftliche*r Mitarbeiter*in/ Postdoc (m/f/d)
Chromatin ist nicht unbeweglich. Es handelt sich um ein hochdynamisches Material, dessen 3D-Struktur zentrale genomische Prozesse – von der Transkription bis zur DNA-Reparatur – steuert. Doch wie verhält sich Chromatin als Material – als Flüssigkeit, Feststoff oder viskoelastisches Gel –, um diese Funktionen in lebenden Zellen auszuführen? Ohne eine Antwort auf diese Frage können wir nicht vollständig verstehen, wie Chromatin bei Krankheiten gestört wird.
www.mdc-berlin.de
June 20, 2025 at 7:58 AM
Reposted by Guillaume Andrey
How to find Evolutionary Conserved Enhancers in 2025? 🐣-🐭
Check out our paper - fresh off the press!!!
We find widespread functional conservation of enhancers in absence of sequence homology
Including: a bioinformatic tool to map sequence-diverged enhancers!
rdcu.be/enVDN
github.com/tobiaszehnde...
Conservation of regulatory elements with highly diverged sequences across large evolutionary distances
Nature Genetics - Combining functional genomic data from mouse and chicken with a synteny-based strategy identifies positionally conserved cis-regulatory elements in the absence of direct sequence...
rdcu.be
May 27, 2025 at 12:19 PM
Reposted by Guillaume Andrey
Thrilled to share our latest study out in @natureportfolio.nature.com led by the fantastically talented Jing Liu. Our study provides insight into a long standing question in biology: What molecular features make us uniquely human and how do these function? www.nature.com/articles/s41...
A human-specific enhancer fine-tunes radial glia potency and corticogenesis - Nature
HARE5, a human accelerated region enhancer, modulates cortical development by influencing neural progenitor cell behaviour, leading to an enlarged neocortex with increased functional independence betw...
www.nature.com
May 14, 2025 at 4:09 PM
Reposted by Guillaume Andrey
The Robson lab's second paper! A truly fun collaboration with an unexpected and important finding - progenitors reconfigure 3D genomes organisation to commission loci for future cell fates. A heroic amount of work from a rockstar team.
🚨 Preprint 🚨
Ever wondered how cells prepare their genomes to enable new cell-fates? In this team up with the Kind lab, we show that genes are repositioned in the nucleus to get ready for future activation and tissue formation. Read 🧵👇 to find out how and when this happens!

doi.org/10.1101/2025...
Reconfiguration of genome-lamina interactions marks the commissioning of limb cell-fates
Diverse forms of heterochromatin block inappropriate transcription and safeguard differentiation and cell identity. Yet, how and when heterochromatin is reconfigured to facilitate changes in cell-fate...
www.biorxiv.org
May 8, 2025 at 10:47 AM
Reposted by Guillaume Andrey
Our BAT paper is accepted in Nature Ecology & Evolution! Single cell, gene regulation, TADs and key TFs that shape the bat wing. Genomics goes Evodevo 😍
May 6, 2025 at 8:34 AM
Reposted by Guillaume Andrey
Our recent paper reports extremely long-range (up to 5.1 Mb 😲) regulation of certain genes in fly neurons and provides new insights into how they form (see short thread below 👇).
genesdev.cshlp.org/gca?gca=gene...
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April 18, 2025 at 6:50 PM
A great #enhancer aficionado day in Paris! Fascinating discussions, nice colleagues and old friends
Full room @collegedefrance.bsky.social for a spectacular symposium on Enhancer Sequences. 🙏 to speakers and the audience. Science is so much fun🤘Videos will be soon online
April 12, 2025 at 8:56 AM
Reposted by Guillaume Andrey
On dira pas qu’il y a un loup quelque part mais là ils prennent vraiment les gens pour des quiches. Un loup transgénique. Point barre.

www.letemps.ch/sciences/col...
Colossal Biosciences annonce avoir ressuscité les «loups géants» de «Game of Thrones». Vraiment? - Le Temps
REVUE DE PRESSE. Lundi, l’entreprise Colossal Biosciences s’est targuée d’être parvenue à la première «désextinction du monde» en faisant naître trois «dire wolf», une espèce disparue il y a des milli...
www.letemps.ch
April 8, 2025 at 6:05 AM
Reposted by Guillaume Andrey
Looking for a PhD in sunny Barcelona? ☀️🔬
Our team is hiring a PhD student for the @hologen.bsky.social
project!

📅 Deadline: *Apr 20*
⚠️ READ THE MOBILITY RULE FOR THIS POSITION
🔁 Please, spread the word

All the info here 👉 www.cnag.eu/jobs/phd-stu...

#PhDlife #Genomics #HoloGen #Barcelona
PhD Student - Structural Genomics Team (HoloGen Project) | CNAG, Centro Nacional de Análisis Genómico
MPORTANT MOBILITY RULE FOR THIS POSITION The MSCA mobility rule applies to this position: the applicant must not have resided or carried out their main activity (e.g., studies, work, research) in Spai...
www.cnag.eu
April 8, 2025 at 8:48 AM
Reposted by Guillaume Andrey
Symposium on ‘Enhancer Sequences’ at beautiful @collegedefrance.bsky.social in Paris, by April 11th. Open and free, no registration. Come to relax listening to facts #TherapeuticEffects #VillageGauloix Final programme below. Tell your friends! 🙏🤘
March 17, 2025 at 2:28 PM