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Arnaud Krebs

@arnaudkr.bsky.social
1.7K followers 457 following 120 posts

Group leader at EMBL Heideberg www.embl.org/groups/krebs

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Reposted by Arnaud Krebs
Svetlana Dodonova @dodonova-sveta.bsky.social · 23h
🧬 Mark your calendars! Our EMBO Workshop "Chromatin evolution from molecules to genomes" is coming to St Feliu de Guíxols (Spain), 4–7 Oct 2027 🌊 Amazing programme! #EMBOchromatinEvo meetings.embo.org/event/27-chromatin-evo Register early!
meetings.embo.org
Chromatin evolution from molecules to genomes
Technological advances over the past decade have enabled genome-wide mapping of chromatin organization across diverse organisms at unprecedented resolution. These studies have uncovered both conserve…
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Svetlana Dodonova @dodonova-sveta.bsky.social · 30/09/2026
New preprint from Dodonova lab 🔔! Capturing multiple states by cryo-EM❄️, we show for the first time how archaeal RNA Polymerase engages a nucleosome and forms direct contacts with histones! 🧬 Great work by Gabriele & a fantastic collaboration with Dina Grohmann! 🧵 www.biorxiv.org/content/10.6...
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Arnaud Krebs @arnaudkr.bsky.social · 25/09/2026
When a scientific revolution happens on your doorstep. Simply spectacular.
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Arnaud Krebs @arnaudkr.bsky.social · 21/09/2026
We are recruiting! Wet&Dry either combined or separate. If you are excited about gene regulation, new methods in genomics and AI-based interpretation! Talk to us!
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László Tora @tlaszlo.bsky.social · 17/09/2026
Pierre Chambon was one of the driving architects of modern molecular biology, whose scientific vision transformed the understanding of gene regulation in eukaryotic cells. His passing in May 2026 represents the loss of an extraordinary scientist. www.nature.com/articles/s41...
nature.com
Pierre Chambon (1931–2026) - Nature Genetics
Nature Genetics - Pierre Chambon (1931–2026)
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Dr Radu Zabet @raduzabet.bsky.social · 15/09/2026
🎉Excited to share the latest paper from my lab, where we developed a new framework to investigate DNA methylation at single-molecule resolution using @oxfordnanopore.bsky.social (ONT) long read sequencing. Work spearheaded by a very talented student Young Jun Kim. www.biorxiv.org/content/10.6... 1/n
biorxiv.org
A Framework for Quantifying DNA Methylation Heterogeneity and Detecting Co-methylated loci from Native Nanopore Sequencing
DNA methylation is an important epigenetic mechanism involved in gene regulation. Most methods focus on analysing DNA methylation averaged from multiple reads, yet these average methylation profiles o...
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Vijay Ramani @vram142.bsky.social · 14/09/2026
Everything you wanted to know about single-molecule epigenomics but were too afraid to ask! Wonderful to co-write (h/t ENORMOUS lift by @arnaudkr.bsky.social) this primer on our nascent field. Also, a 💯 example of wonderful colleagues building something *together*, not in competition =)
nature.com
A practical guide to studying genome function using single-molecule genomics
Nature Reviews Molecular Cell Biology - Single-molecule genomics methods are used to study the activity of regulatory factors on individual DNA molecules genome-wide, thereby enabling...
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Arnaud Krebs @arnaudkr.bsky.social · 14/09/2026
Special thanks to @events.embl.org for supporting www.embl.org/about/info/c... where the idea of this review came up
embl.org
Gene regulation: one molecule at a time
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Arnaud Krebs @arnaudkr.bsky.social · 14/09/2026
your starter pack for Single Molecule Genomics! Why you should do it (or not) - How you should do it. Collective effort with @vram142.bsky.social @stirlingchurchman.bsky.social @naltemose.bsky.social A Stergachis M Stadler W Greenleaf @embl.org rdcu.be/PmzSEV529GRa
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Mike Dorrity @mwdorr.bsky.social · 13/09/2026
🧫 We’re hiring a staff/research scientist to develop new experimental approaches that capture cell state dynamics. Join us in Heidelberg, details + application here: embl.wd103.myworkdayjobs.com/EMBL/job/Hei... Closes September 30th
embl.wd103.myworkdayjobs.com
Laboratory Officer
The Dorrity group at EMBL Heidelberg is seeking a motivated and skilled molecular biologist to join as a Laboratory Officer. Our group uses cutting-edge single-cell genomic techniques to study how cel...
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Arnaud Krebs @arnaudkr.bsky.social · 10/09/2026
EMBL QBMM is back this year with an outstanding line-up! Plenty of talks will be selected from submitted abstracts, with emphasis on junior scientists and representation across diverse fields. The abstract deadline is the end of this week, so don’t miss out! www.embl.org/about/info/c...
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Kazuhiro Maeshima @kazu-maeshima.bsky.social · 08/09/2026
Is euchromatin really “open”? 🧬 Using super-resolution imaging🔬 our new study @natgenet.nature.com reveals: Euchromatin forms condensed domains in live cells. Cohesin constrains them and prevents domain mixing for proper transcriptional insulation🚧 🔗 www.nature.com/articles/s41... (1/2)
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Alessandro Dulja @alessandrodulja.bsky.social · 07/09/2026
🚨Happy to share that the first part of my PhD is out on @cp-devcell.bsky.social! This has been an exciting project in the lab of @eileen-furlong.bsky.social @embl.org, studying the regulation of Pol II pausing across embryogenesis and its impact on gene expression dynamics. tinyurl.com/5n88ykk7
tinyurl.com
Chromatin context shapes SPT5 regulation of promoter-proximal Pol II, fine-tuning gene expression changes during Drosophila embryogenesis
Using rapid SPT5 depletion, Dulja et al. uncover different molecular phenotypes at different embryonic stages. In early embryos, SPT5 depletion shifts Pol II from the pausing site to the +1 nucleosome...
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 07/09/2026
A triptych of reviews on the transcription cycle @natrevmcb.nature.com 1️⃣ Initiation Chen & Xu 2️⃣ Elongation @camimoso.bsky.social @isaacfianu.bsky.social @adelmanlab.bsky.social 3️⃣ Termination Song et al. www.nature.com/articles/s41... www.nature.com/articles/s41... www.nature.com/articles/s41...
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Arnaud Krebs @arnaudkr.bsky.social · 07/09/2026
Is activation of multiple enhancers and promoters coordinated? Short answer is yes. Check full story from @mathias-boulanger.bsky.social @kasitc.bsky.social leveraging long read single molecule sequencing to address this. @embl.org www.cell.com/molecular-ce...
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Bas van Steensel lab (NKI) @basvansteensellab.bsky.social · 18/08/2026
Inferring transcription factor activity: use ATAC-seq, reporter assays, or both? link.springer.com/article/10.1...
link.springer.com
Systematic comparison of estimates of transcription factor activity by ATAC-seq and multiplexed reporter assays - Molecular Systems Biology
Transcription factors (TFs) are central to gene regulation and play critical roles in development, cellular homeostasis and disease. The ability to accurately measure TF activity is essential to under...
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Anthony Mathelier @amathelier.bsky.social · 17/08/2026
Exciting news! We've just moved into the brand new Livsvitenskapsbygningen (Life Science Building) in Oslo, with the whole @ncmbm.bsky.social! Incredible space, great views, and so many opportunities for collaboration ahead. 🧬🏢 @uio.no #LifeScience #Oslo #LVB
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Joaquina Delas @joadelas.bsky.social · 17/08/2026
Very much looking forward to this! Join us!
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Tineke Lenstra @tinekelenstra.bsky.social · 17/08/2026
Sign up now for the EMBO meeting 'quantitative biology to molecular mechanisms'. Fantastic speaker lineup and plenty of speakers slots selected from abstracts. Submit your abstract before Sept 11!
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Arnaud Krebs @arnaudkr.bsky.social · 13/08/2026
Thanks Andreas. Well appreciated!
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Arnaud Krebs @arnaudkr.bsky.social · 12/08/2026
Thanks Christa
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Arnaud Krebs @arnaudkr.bsky.social · 12/08/2026
Thanks for the (positive) feedback!
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Arnaud Krebs @arnaudkr.bsky.social · 12/08/2026
This is an outstanding meeting across fields. The lineup is amazing this year. Do not miss it.
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Guido Barzaghi @guidobarzaghi.bsky.social · 11/08/2026
Finally, many thanks to the EMBL communication team for their beautiful piece www.embl.org/news/science...
embl.org
A new genetic tool helps researchers uncover the logic of gene regulation | EMBL
Researchers use synthetic biology approaches to test hundreds of DNA sequences for their effect on regulating gene expression
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Guido Barzaghi @guidobarzaghi.bsky.social · 11/08/2026
And into our companion computational method paper for details on FootprintCharter doi.org/10.1093/bioi...
doi.org
FootprintCharter: unsupervised detection and quantification of footprints in single molecule footprinting data
AbstractSummary. Single molecule footprinting profiles the heterogeneity of TF occupancy at cis-regulatory elements across cell populations at unprecedente
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Guido Barzaghi @guidobarzaghi.bsky.social · 11/08/2026
Dive into the revised paper for a deeper validation of our F1 and SOX2 dTAG perturbations, as well as a brand-new combinatorial TF motif deletion mCHIRA experiment.
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Arnaud Krebs @arnaudkr.bsky.social · 12/08/2026
How many TFs to you need to open chromatin at enhancers? Very excited to see this one out! Check out the augmented version with combinatorial motif mutant libraries in Figure 5! Very proud of @guidobarzaghi.bsky.social @valentinabaderna.bsky.social @embl.org
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László Tora @tlaszlo.bsky.social · 12/08/2026
Check out our new review about SAGA (Spt-Ada-Gcn5 acetyltransferase) and ATAC (Ada Two-A Containing) coactivator complexes in EMBO. doi.org/10.1038/s443.... We dissect the functions of SAGA and ATAC, which are crucial for understanding regulation by these complexes as targets in precision oncology.
doi.org
Client Challenge
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Maxim Greenberg @maxvcg.bsky.social · 03/08/2026
Read this article, get excited, and come to the Epigenome Editing symposium! Marianne Rots, Charlie Gersbach, and Angelo Lombardo (all featured in the piece) will be there in person!! Registration only 50€, talks from abstracts, plus Paris 😜 @natureportfolio.nature.com www.nature.com/articles/d41...
nature.com
Epigenetic editing makes its mark
Researchers are rewriting the chemical tags on DNA and chromatin to tune gene expression.
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Mel Eckersley-Maslin @meleckmas.bsky.social · 03/08/2026
Latest from @arnaudkr.bsky.social on TF cooperation at enhancers, liked the combination of single-molecule footprinting at ectopic vs endogenous loci in mESCs. Curious if the cumulative activation frequency model holds for other less proliferative/plastic cell types? www.nature.com/articles/s41...
nature.com
Cumulative transcription factor binding and p300-mediated histone acetylation drive enhancer activation frequency - Nature Genetics
This study uses single-molecule footprinting to quantify chromatin accessibility at enhancers and promoters in mouse embryonic stem cells and to dissect the contributions of transcription factor bindi...
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Arnaud Krebs @arnaudkr.bsky.social · 05/08/2026
Thanks Melanie! We observe partial opening at enhancers in every cell type we looked at so far (incl erythrocytes and myoblasts) - so I would say probably yes, but needs to be formally tested. Particularly in post-mitotic cells.
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Arnaud Krebs @arnaudkr.bsky.social · 31/07/2026
'Gene regulation, one molecule at a time' is coming back in July 17! Book your calendars and stay tuned!
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Arnaud Krebs @arnaudkr.bsky.social · 23/07/2026
One of my favorite meetings. Many slots for abstract selected talks! Friendly to junior scientist - apply!
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Jana Helsen @helsenjana.bsky.social · 16/07/2026
I am starting my lab at the University of Geneva next January! Incredibly excited to soon be joining the MOCEL department as an Asst. Professor. The lab will use evolutionary cell biology to study chromosomes, centromeres & speciation 🧬🔬🌱 Intrigued, want to join or collaborate? 🔗 helsenlab.org
helsenlab.org
Helsen lab | chromosome and centromere evolution
The Helsen lab at the University of Geneva explores how centromeres and chromosomes evolve, diversify, and function across eukaryotes. Discover our latest publications, research team, and open positio...
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 16/07/2026
In memory of Pierre Chambon (1931–2026): a visionary pioneer of modern molecular biology by Hinrich Gronemeyer in @embojournal.org link.springer.com/article/10.1...
link.springer.com
In memory of Pierre Chambon (1931–2026): a visionary pioneer of modern molecular biology - The EMBO Journal
The EMBO Journal -
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Alejandro Montenegro @aemonten.bsky.social · 15/07/2026
Interesting. Full deletion of all introns in yeast was actually my project in the Staley lab, *20 years ago*. I actually found a bunch of phenotypes. We did this in collaboration with the Guthrie lab. www.cell.com/cell/abstrac...
cell.com
A spliceosome-independent eukaryote generated by complete intron removal
Elimination of all spliceosomal introns reveals a spliceosome-independent eukaryote.
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Alex Radzisheuskaya @a-radzisheuskaya.bsky.social · 08/07/2026
1/ Very excited to share the first publication from my lab! In this work, we developed an efficient strategy to precisely mutate mammalian histone genes in their native genomic context using CRISPR prime editing: www.nature.com/articles/s41...
nature.com
Identifying critical lysines in mammalian histone H3 with high-throughput CRISPR prime editing - Nature Genetics
This study uses a precise and efficient clustered regularly interspaced short palindromic repeats (CRISPR) prime editing system to substitute lysine residues in histone H3, individually or in combinat...
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Mike Dorrity @mwdorr.bsky.social · 01/07/2026
First preprint stemming from a fantastic collaboration with @hanhtkvu.bsky.social Shared PhD student and BIF fellow @gvaidya.bsky.social led this tour de force - check it out ! How does temperature affect whole-organism cellular trajectories?
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Hanh Vu @hanhtkvu.bsky.social · 01/07/2026
Super excited that the first preprint from the lab is out! Led by an amazing student, Gaurav @gvaidya.bsky.social, jointly supervised with @mwdorr.bsky.social.
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Job Dekker @jobdekker.bsky.social · 01/07/2026
Frank Grosveld has been a giant in the field of long-range gene regulation. Inspirational to me and I am sure for many others. Rest in peace.
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Arnaud Krebs @arnaudkr.bsky.social · 19/06/2026
Very exciting to see new forms of chromatin! Great job! Congrats all!
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Arnaud Krebs @arnaudkr.bsky.social · 19/06/2026
Awesome work! Congrats all!
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Mike Dorrity @mwdorr.bsky.social · 19/06/2026
First pre-print from the lab, a collaborative effort led by Jess Bourn @bournsupremacy.bsky.social, a fantastic PhD in my group. We resolve a key problem in development + evolution: how do we quantify heterochrony and link temporal variation to phenotype? www.biorxiv.org/content/10.6...
biorxiv.org
Quantitative mapping of heterochrony to species-specific phenotypes
The genetic program of animal development is conserved, but its rate of execution varies across species. Heterochrony, shifts in the relative timing of developmental events, generates phenotypic varia...
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Congresswoman Maxine Dexter, M.D. @repdexteror.bsky.social · 18/06/2026
Pressure works. Three days ago, I joined lawmakers pressuring the White House to stop its plan to dismantle a $368 million ocean monitoring system that is CRITICAL to understanding climate change and marine ecosystems, including right here off the coast of Oregon. Today, Trump backed down.
nytimes.com
Trump Administration Backs Off Plan to End Ocean Monitoring
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Svetlana Dodonova @dodonova-sveta.bsky.social · 19/06/2026
Excited to share our new preprint! 🧬❄️ by brilliant @mdreimann.bsky.social and great collaborators! Using cryo-ET&EM, we reveal archaeal chromatin in a near-native state: variable-beads-on-a-string fibers shaped by growth phase and histone composition #ArchaeaSky www.biorxiv.org/content/10.6...
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Kevin M. Kruse @kevinmkruse.bsky.social · 18/06/2026
"So ... so I said ... why not sign your treaty here, at Versailles?"
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Vijay Ramani @vram142.bsky.social · 18/06/2026
JIT 4 summer, the latest preprint from our lab, brilliantly led by @kaitezhang.bsky.social w/ support from Collepardo lab (@juliamaristany.bsky.social / @janhuemar.bsky.social). www.biorxiv.org/content/10.6... describes a new single-molecule epigenomic method, & discoveries it enables ... (1/n)
biorxiv.org
Single-molecule nucleosome spacing coordinates chromatin fiber interactions
Nucleosome spacing influences higher-order chromatin fiber organization in vitro but how this relates to cellular chromosome structure remains contentious. To address this, we developed Ligation Analy...
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Arnaud Krebs @arnaudkr.bsky.social · 15/06/2026
This will be cool! Featuring Valentina presenting her PhD work in my lab.
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Maxim Greenberg @maxvcg.bsky.social · 15/06/2026
🚨Preprint Drop🚨 We are very pleased to release our study on DNA methylation dynamics at enhancers during ESC differentiation! This work was led by Marlet Morales-Franco and Priscillia Lhoumaud 🧵(1/13) www.biorxiv.org/content/10.6...
biorxiv.org
Dual profiling of DNA modifications with enhancer features during the exit of naive pluripotency
Cis-regulatory elements, such as enhancers, play an essential role in coordinating gene expression programs during cellular transitions. As such, substantial efforts have been made to characterize enh...
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Higor Rosa @hvdrosa.bsky.social · 14/05/2026
Thrilled to share the updated video of my paper in Nature with Maciej (under supervision of @simonemattei.bsky.social & @jomaalab.bsky.social) Proud to use Cryo-ET to uncover how hibernation factors are key to translation restart! To model PTMs in situ and render animations fulfilled my PhD dream!🥹🎉
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