Antoine Molaro

Antoine Molaro

@antoinemolaro.bsky.social

Group Leader @GReD_Clermont Chargé de Recherche @INSERM Evolutionary biologist studying chromatin also drummer. Jazz and epistemology. he/his https://www.igred.fr/en/team/evolutionary-epigenomics-and-genetic-conflicts/

1,584 Followers 1,395 Following 67 Posts Joined Oct 2023
21 hours ago
EMBO starts search for its next Director – Features – EMBO The process to appoint the next EMBO Director is underway. The incoming Director will take office in February 2028, succeeding Fiona Watt, who has led the organization since January 2022

Interested in one of the top jobs in European biology?

@embo.org has opened a call for its next Director, to succeed Fiona Watt

Really spectacular opportunity! Spread the word...

www.embo.org/features/emb...

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2 days ago
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We are excited to be recruiting into 3 Associate Professorship's in @oxfordbiochemistry.bsky.social. Come join us as a colleague and benefit from our vibrant and multidisciplinary environment. Reach out to me if you have any questions. Please repost! (tinyurl.com/48deybuu) (tinyurl.com/4pdvjaft).

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2 days ago
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Hello World ! Today, we have been so lucky to host the one and only Emily Hodges @hodges-lab.bsky.social to hear about her research. So many idea, so much cool stuff. Thank you Emily for sharing your science with us @igred.fr !
#Friends #Science #DNAmethylation #watwat

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3 days ago

Very happy to have contributed to this mastodon of a paper by Yinan @yinanwan.bsky.social. Whole-mount spatial transcriptomics in zebrafish y'all 🐟🧪

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5 days ago

Check out this collaboration between Kellie Jurado’s lab and mine. We find that paternal immune activation reprograms the epididymis and, subsequently, small RNAs in sperm, which modulate post-fertilization embryonic gene expression and immunity in offspring in a sex-specific manner.

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3 days ago
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Gene conversion empowers natural selection in a clonal fish species - Nature Analysis of the asexually reproducing Amazon molly Poecilia formosa and its sexually reproducing progenitors Poecilia mexicana and Poecilia latipinna reveals that it maintains a divergent mutational l...

Cool paper, turning evolutionary theory on its head - gene conversion overcomes the cost of asexual reproduction…

Gene conversion empowers natural selection in a clonal fish species www.nature.com/articles/s41...

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5 days ago
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Florent Murat Fish Evolution, Genomes, and Reproduction

Our lab is hiring a postdoctoral researcher with expertise in bioinformatics, evolutionary genomics and single-cell data analyses, to explore the evolution of reproductive organs across fishes. We are located in Rennes, France (INRAE-LPGP). For more details: florentmuratwebpage.wordpress.com

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5 days ago
Validate User

Positive selection targeted primate genes that encode transposable element repressors academic.oup.com/gbe/article/...

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6 days ago

Our work on bacterial Schlafens in phage defense is out today @natmicrobiol.nature.com!

Check out the final version here:
rdcu.be/e7Bmz

We are looking for postdocs and students to expand our team! Official postings are coming soon.

Please reach out if you're interested!
#phage #phagesky #microsky

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1 week ago
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🚨 Job Alert - Please share! 🙏

Interested in 3D gene regulation in development & evolution? 🤓🧬

💥 Our lab at @cabd-upo-csic.bsky.social is expanding!

We’re recruiting:
✅ PhD students
✅ Postdocs
💻🧪 Experimental or computational backgrounds welcome

👇 Details below

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6 days ago
Flyer for symposium: https://ctrlepiedit.sciencesconf.org/

Very excited to announce the FIRST symposium on epigenome editing! These tools are becoming widely used in mol bio, ag & therapy. It's time to bring leaders together to discuss this rapidly growing and exciting field. And why not in Paris! Please register & share! (1/2) ctrlepiedit.sciencesconf.org

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1 week ago
Figure 1.(A) Classical gel electrophoresis experiments showing mono-, di-, tri-, tetra-, and further multinucleosome bands upon chromatin digestion. (B) The nucleosome repeat length (NRL) is defined as the genomic distance between the centres of two neighbouring nucleosomes. Figure 2.Nucleosome mapping using MNase-seq versus ATAC-seq. (A) In MNase-seq, nucleosomes in both open and tightly packed genomic regions are accessible to digestion. MNase preferentially cleaves DNA between nucleosomes and digests DNA until it encounters a histone octamer, which provides a footprint of nucleosome-protected DNA regions. (B) Bulk MNase-seq results in averaged maps across millions of cells, effectively capturing all possible nucleosome positioning configurations. (C) Single-cell MNase-seq (scMNase-seq) results in a noisier and sparser signal. The resulting footprints still represent nucleosome-protected regions, but not all nucleosomes are represented. (D) In ATAC-seq, open regions can be accessed by the enzyme Tn5 transposase, which can insert primers in regions free from the binding of nucleosomes and transcription factors (TFs). (E) For open chromatin regions, nucleosome maps can be obtained from ATAC-seq similar to MNase-seq. (F) Closed, tightly packed chromatin regions may be less represented in ATAC-seq nucleosome maps.
Figure 5.Molecular mechanisms affecting nucleosome spacing. (A) Linker histones H1 and nonhistone chromatin proteins which compete with H1s and modulate nucleosome spacing through structural and electrostatic mechanisms. (B) Chromatin remodellers actively reposition nucleosomes following context-dependent rules. (C) Cell state-dependent chromatin boundaries formed by CTCF and other structural proteins, as well as associated recruitment of chromatin remodellers which space nucleosomes. (D) Gene activity associated with remodeller action and RNA polymerases transcribing through the nucleosomes, leading to smaller distances between nucleosomes in regulatory regions and gene bodies. (E) DNA sequence repeats of different types. Figure 6. Examples of NRL changes in biological systems. (A) Cell differentiation leads to NRL changes between different cell types, e.g. mouse dorsal root ganglia neurons (NRL ∼165 bp) versus cortical astrocytes (NRL ∼183 bp) [175]. Schematic cell shapes are adapted from an image created in BioRender (https://BioRender.com/89trj2t). (B) Paired normal versus tumour breast tissues show NRL shortening in cancer (figure adapted from [36] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)). (C) Nucleosome positioning derived from cfDNA of human volunteers shows NRL increase with age (figure reprinted from [79] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)).

Nucleosome aficionados! Our new review "Nucleosome spacing across cell types, diseases, and ages" is out in NAR: academic.oup.com/nar/article/...

A huge effort to pull together what we’ve learned about nucleosome spacing in many systems. Enjoy!
@milena-bikova.bsky.social @chrsclrksn.bsky.social

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1 week ago
Job Details

Pls re-post: My department @oxfordbiochemistry.bsky.social are recruiting for several new faculty positions (links below). Broad search in molecular biology/biochemistry, across prokaryotes and eukaryotes. Interested in understanding life at the molecular level, this job might be for you!
1/n

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1 week ago
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Accessory subunits of PRC2 mimic H3K27me3 to restrict the spread of Polycomb domains Some proteins mimic the repressive mark H3K27me3, but the physiological relevance of this phenomenon was unclear. Agius et al. show that the PRC2 subunits JARID2 and PALI1 mimic H3K27me3 to antagonize PRC2-mediated H3K27me3 deposition, limit Polycomb domain spreading, and enable timely activation of developmental genes in vivo.

Online Now: Accessory subunits of PRC2 mimic H3K27me3 to restrict the spread of Polycomb domains Online now:

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2 weeks ago
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🤩to see this behemoth of a story out !
Pushed by @nikobiota.bsky.social & the Amazing @embl.org AML Team (Tina, Michael, Paulina) and in Co. with the Best #science #family you can dream of!

This truck was #home, for weeks in a row & in my heart for a lifetime.

www.biorxiv.org/content/10.6...

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1 week ago
Plant Epigenetics 2026 - Sciencesconf.org EPIPLANT 2026 will bring together the scientific community working across the broad fields of plant and algal epigenetics, chromatin dynamics, environmental responses and transgenerational inheritance. EPIPLANT 2026 is the biennial symposium of the CNRS Groupement de Recherche (GDR) EPIPLANT.

EPIPLANT conference

🌱 You like plants and epigenetics?
Explore mechanisms of chromatin regulation & epigenetics in Nantes, France!
🎤 Great speakers + oral & poster slots from selected abstracts.
22-24 June 2026
Abstract submission deadline: 24 April 2026.
epiplant-2026.sciencesconf.org

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1 week ago
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*Recruiting new group leaders*

The @lmcb-ucl.bsky.social at University College London are looking for outstanding candidates to sponsor for career development fellowships. Fellows would then be assessed for tenured positions at the end of the fellowship term.

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3 weeks ago
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Predictors of protein evolution in the drosophilid immune system Abstract. The evolutionary dynamics of immune genes are shaped by diverse selective pressures, yet the relative roles of gene-level traits, functional spec

Predictors of protein evolution in the drosophilid immune system url: academic.oup.com/gbe/article/...

#Drosohila #Immunity #fly #Evolution #Geneturnover #AdaptiveEvolution #Predictors #OrthologousGeneFamilies

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2 weeks ago
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rambaut/figtree Automatically exported from code.google.com/p/figtree - rambaut/figtree

The first version of FigTree was released nearly 20 years ago and it is still widely used (including by me). But there are currently 85 issues on the GitHub repo (github.com/rambaut/figt...) and some of them I don’t really like the look of.

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2 weeks ago

Final version @nature.com of our paper describing unconventional multicellular development in a choanoflagellate inhabiting an extreme environment. A ton of new data since the first @biorxivpreprint.bsky.social preprint (which we've kept updating).

A brief 🧵 (carried over from the old place)

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2 weeks ago

Following on from this amazing CoB workshop, we wrote a perspective on constructionist approaches to crack the cis-regulatory code.

All credit to @carldeboer.bsky.social who drove this, and never gave up on this piece.

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2 weeks ago
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Clonal-aggregative multicellularity tuned by salinity in a choanoflagellate - Nature The choanoflagellate Choanoeca flexa forms motile and contractile cell monolayers purely clonally, purely aggregatively or through a combination of both processes depending on environmental condi...

Clonal-aggregative multicellularity tuned by salinity in a choanoflagellate www.nature.com/articles/s41... #jcampubs

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2 weeks ago
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Five ways to spot when a paper is a fraud Science sleuths share their common-sense tips for sniffing out fishy articles.

“We know the fraudsters are going to fraud. We’re gonna make it a little bit harder for them”. @elisabethbik.bsky.social @abalkina.bsky.social & other sleuths share tips for detecting dodgy papers. By @sjmelchor.bsky.social @nature.com 🧪 www.nature.com/articles/d41...

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2 weeks ago
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Chromatin spatial analysis by METALoci unveils sex-determining 3D regulatory hubs Nature Structural & Molecular Biology - METALoci, a new three-dimensional genome computational tool, reveals a major rewiring of regulatory interactions during sex determination. By combining...

🚨 We’re happy to announce (finally!) the publication of METALoci, in collaboration with @dariloops.bsky.social and heroes: @jrotwitguez.bsky.social & @imotagom.bsky.social.

METALoci integrates #3DGenome and #Epigenetics data into a unified framework we believe is very useful!

Here 👉🏻 rdcu.be/e5sm2

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2 weeks ago

In academic depts, ‘jobs’ for many folks increased manifold in the past 15 months with no pay increases. They talk to your trainees & junior colleagues and talk them off high ledges. They organize and fight for the greater good.

Find them. Celebrate them. Reward them.

Don’t take them for granted.

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2 weeks ago

postdoc recruitment still open!

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3 weeks ago
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Global reorganization of genome architecture at the transition to gametogenesis - Nature Structural & Molecular Biology Huang, Rigau and colleagues observe major changes in how DNA is organized in early germ cells before they start developing into sperm or eggs. These results show that germline removes structural ‘memo...

Happy to share our latest paper.

Our findings uncover a unique chromatin architecture and spatial chromosome arrangement in gonadal germ cells and document that alongside global DNA demethylation, the germline epigenetic reprogramming involves reorganisation of the 3D genome.

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3 weeks ago

#mustread

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3 weeks ago

So excited to share this manuscript led by the inimitable Cara Brand, who discovered that Topoisomerase II evolution causes hybrid female lethality in Drosophila.

Congrats to Cara, @nickbr0wn.bsky.social, Anirban, and
@buszczaklab.bsky.social!

www.biorxiv.org/content/10.6...

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3 weeks ago
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Ancient co-option of LTR retrotransposons as yeast centromeres - Nature Evolutionarily related ‘proto-point’ centromeres providing resolution to the evolutionary origins of point centromeres are identified in yeast, and comparison shows they evolved in an ancestor with re...

Our paper is now out in Nature:

“Ancient co-option of LTR retrotransposons as yeast centromeres”

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

A short thread on how retrotransposons helped give rise to yeast point centromeres.

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