Arnau Sebé-Pedrós

Arnau Sebé-Pedrós

@arnausebe.bsky.social

Group leader CRG; Associate Faculty ToL Sanger Institute. Genome regulation, chromatin, cell types, and evolution. https://www.sebepedroslab.org

1.7K followers957 following122 posts

Arnau Sebé-Pedrós reposted

🚨 Job Alert - Please share 🙏 Interested in 3D gene regulation in development & evolution? 🤓🧬 💥 Our lab @cabd-upo-csic.bsky.social is expanding! ✅ 4 years fully funded PhD position 🧪 Experimental backgrounds welcome 👇 Details below #PhDPosition #PhDOpportunity #AcademicJobs

Arnau Sebé-Pedrós reposted

Arnau Sebé-Pedrós reposted

Arnau Sebé-Pedrós reposted

Happy to share results of the @bat1kgenomes.bsky.social phase 1, providing reference genomes covering 21 bat families. New insights into bat phylogeny, ancestral genome reconstruction, European origin & ancestral echolocation. Great work by a team of 100+ colleagues www.nature.com/articles/s41...

nature.comReference genomes and fossils revise bat family phylogeny and biogeography - NatureAn updated phylogeny of bats is presented, based on new genome assemblies and many ancient fossils and including all known bat families.

Arnau Sebé-Pedrós reposted

Must admit, ever since I was a kid, I’ve dreamt of seeing microscopy images of #protists in @lemonde.fr Today, protists are everywhere, and several images were taken by the team. And seeing #ichthyosporeans there too?! 🥹 One step closer to showcasing the beauty of the invisible microbial world. 🔬✨

Arnau Sebé-Pedrós reposted

Very excited to share the new preprint from our lab on transcriptional memory and immune priming! Herculean effort from first authors Linhao and Jenia. Epigenome-engineering experiments provide evidence that H3K4me3 plays a causal role!  doi.org/10.64898/202...

doi.orgdoi.org
bioRxivpreprint@biorxivpreprint.bsky.social

Engineering chromatin to encode transcriptional immune memory in Arabidopsis https://www.biorxiv.org/content/10.64898/2026.09.10.750729v1

Arnau Sebé-Pedrós reposted

21627 applications. Nothing to celebrate here. Impossible to evaluate fairly & safely. Neither the science (too diverse & possibly LLM generated) nor the soft criteria (likely LLM generated). Without an interview stage - a security risk! marie-sklodowska-curie-actions.ec.europa.eu/whats-new/ne...

marie-sklodowska-curie-actions.ec.europa.euMSCA Postdoctoral Fellowships 2026 receives record number of applicationsThe 2026 call has attracted considerable interest from the research community with 21,627 applications submitted.

Arnau Sebé-Pedrós reposted

Arnau Sebé-Pedrós reposted

Very proud of the team, led by @baukjeje.bsky.social & @fmikus.bsky.social To all of you doing #Expansion #Microscopy #UExM Try Concanavalin A. Its cheap, easy to use & labels the #nuclear #Envelope @moorefound.bsky.social @embl.org @sciencesunige.bsky.social @erc.europa.eu @snsf.ch

Baukje Hoogenberg@baukjeje.bsky.social

Do you want to label the nuclear envelope? Do you work on a non-model species? Try Concanavalin A! We tested ConA on various species across the eukaryotic tree and find it is a very useful ExM-compatible marker for the NE and ER. Read all about it in our preprint: www.biorxiv.org/content/10.6...

Arnau Sebé-Pedrós reposted

🧬🔬 Why are enhancers transcribed and how does that impact gene regulation? I’m really excited to share our new paper in @science.org showing that noncoding RNAs control the timing of gene activation in embryos. With Mike Levine #ScienceResearch @columbiamed.bsky.social A few highlights below... 🧵👇

science.orgNoncoding transcription controls the developmental dynamics of long-range gene regulationThe genomic regions regulating gene expression are often themselves transcribed into a variety of noncoding RNAs (ncRNAs). However, the regulatory roles of this noncoding transcription remain largely ...

Arnau Sebé-Pedrós reposted

Arnau Sebé-Pedrós reposted

We watched piRNAs and transposons across development, saw them dance tightly and wrote a paper about it. It's so cool to see it online and we will make a thread about it all very soon. Stay tuned :-)

bioRxiv Genetics@biorxiv-genetic.bsky.social

A developmental switch in the piRNA pathway ensures stage-specific transposon silencing https://www.biorxiv.org/content/10.64898/2026.08.28.747770v1

Arnau Sebé-Pedrós reposted

Remember this? bsky.app/profile/did:... Rigorous visualization of the structure in your high-dimensional data. Fantastic work by @dhdegroot.bsky.social With help of the reviewers of Nat Biotech it is now updated, extended an officially published here: www.nature.com/articles/s41... 1/n

nature.comBonsai reconstructs tree representations for distortion-free visualization and exploration of high-dimensional data - Nature BiotechnologyHigh-dimensional data are visualized through representation on tree structures.
Erik van Nimwegen@erikvannimwegen.bsky.social

Here it is! Bonsai. Now there is really no more excuse for using t-SNE/UMAP. Bonsai not only makes cool pictures of your data. It actually rigorously preserves its structure. No tunable parameters. Incredible work by @dhdegroot.bsky.social. I'm so excited about this! www.biorxiv.org/content/10.1...

Arnau Sebé-Pedrós reposted

I'm thrilled to share that I've started as an Assistant Professor in Biological Sciences and the Oceans Research Center at Lehigh University! I'm building a group in evolutionary genomics to study the origin of animals, and to use those concepts to better understand human disease. More: evogeno.me

Arnau Sebé-Pedrós reposted

The shared principles of human and bacterial antiviral immunity An honor to highlight remarkable discoveries from many labs over the past 12 years that unite previously disparate fields of how animal cells and prokaryotes defend against viruses. www.nature.com/articles/s41... rdcu.be/fzwyB

nature.comShared principles of human and bacterial antiviral immunity - NatureThe Review describes shared ancient, conserved mechanisms between human antiviral immunity and bacterial anti-phage systems, outlining universal principles of pathogen sensing, signalling and effector...

Arnau Sebé-Pedrós reposted

Arnau Sebé-Pedrós reposted

Thrilled to share that our scE2G paper is now published in Nature Genetics! www.nature.com/articles/s41... scE2G predicts enhancer-gene regulatory interactions from single-cell data with state-of-the-art performance. Amazing work led by @mayayayas.bsky.social and @613weilin.bsky.social!

nature.comMapping enhancer–gene regulatory interactions from single-cell data - Nature GeneticsscE2G is a family of models that predict enhancer–gene regulatory interactions from single-cell datasets and enable mapping of these interactions across diverse cell types and tissues.
Jesse Engreitz@jengreitz.bsky.social

Update: scE2G is now online at Nature Genetics! Since the preprint, we added a new benchmark on a fully held-out CRISPR dataset. scE2G continues to show state-of-the-art performance, reinforcing that it generalizes well nature.com/articles/s41588-026-02695-8 1/

Final thoughts: this work was possible thanks to the protistologists who discovered and cultured these species. Many key cultures are now lost or accumulating mutations after decades growing. Sustained efforts will be needed to reverse this and enable future evolutionary cell biology studies.

H3K79 methylation is the most peculiar case: in some species associated with active transcription, whereas in others linked to repression. In Acanthamoeba even K79me1/2/3 have different associations, possibly explained by the evolution of different Dot1 paralogs.

What we find? Active chromatin states are remarkably conserved, H3K4me and acetylations mark active promoters, while H3K36me3 tracks active gene bodies. The chromatin architecture of transcription runs deep in eukaryotic evolution.

In contrast, repressive chromatin states varied substantially. Different lineages used distinct combinations of H3K9, H3K27 and H3K79 methylations to mark silent genes and TEs. This may reflect the long evolutionary history of conflicts between eukaryotic genomes and parasitic genetic elements.

Now we ask if these conserved marks have a conserved functional readout. We developed a multiplexed ChIP-seq method (iChIP2) to profile 12 marks across 12 species, including some of our favorite protists. In some cases, these represent the first chromatin landscapes for entire eukaryotic lineages.

Arnau Sebé-Pedrós reposted

Thrilled to post thread re: new single-cell lineage of mouse embryo reconstructed w/ DNA Typewriter. One animal, zygote to late organogenesis (E13.5). Tree has 1,340,794 transcriptionally profiled, annotated tips (cells), 1,142,588 dated internal nodes, rooted at zygote 1/n

Arnau Sebé-Pedrós reposted

We're hiring 4 postdocs at @unibo.it to study nervous system evolution. Seeking expertise in single-cell genomics, molecular or developmental biology in ctenophores, cnidarians, echinoderms, flies or human stem cells. 2+2 yrs contract. Deadline: 26 Aug. Please share! bandi.unibo.it/s/apos7/proc...

bandi.unibo.itProcedura di valutazione comparativa per titoli e colloquio per il conferimento di n. 4 contratti di ricerca presso il Dipartimento di Scienze Biologiche, Geologiche e Ambientali - SSD BIOS-04/A - GSD...

Arnau Sebé-Pedrós reposted

Open position in our lab for a research engineer. The applicant must hold a PhD in life sciences and have demonstrable experience in molecular biology and biochemistry. For more info: emploi.cnrs.fr/Offres/CDD/U...

emploi.cnrs.fr Portail Emploi CNRS - Job offer - Research Engineer (M/F), genome stability, Institut Jacques Monod, Paris, France
Institut Jacques Monod@ijmonod.bsky.social

#JobOffer 💼 Research Engineer (M/F) 📆 October 15th 📍Institut Jacques Monod, @sandraduharcourt.bsky.social 🔗 emploi.cnrs.fr/Offres/CDD/U...

Arnau Sebé-Pedrós reposted

🚨 Job Alert - Please share 🙏 Interested in 3D gene regulation in development & evolution? 🤓🧬 💥 Our lab at @cabd-upo-csic.bsky.social is expanding! ✅ 4 years fully funded PhD position 💻🧪 Experimental or computational backgrounds welcome 👇 Details below #PhDPosition #PhDOpportunity #AcademicJobs

The third chapter in our coral single-cell trilogy is here. After mapping cell type diversity in Stylophora (Levy 2021) and exploring facultative symbiosis in Oculina (Levy 2025), we now uncover cell type-specific responses to heat stress. Find out more in @xgrau.bsky.social's thread below.

biorxiv.orgCell-resolved transcriptional responses during heat-induced coral bleaching and recoveryCoral reefs depend on an intracellular symbiosis between cnidarian hosts and photosynthetic dinoflagellates that is disrupted by ocean warming, causing coral bleaching. Yet how these responses are dis...
Xavier Grau-Bové 🌾@xgrau.bsky.social

I'm happy to share our latest on #coral single-cell biology: a transcriptomic timecourse of heat stress in Stylophora pistillata, from bleaching to recovery 🪸🌊 This project was spearheaded by Shani Levy and carried through in @arnausebe.bsky.social's lab at @crg.eu. www.biorxiv.org/content/10.6...