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Olga Rosspopoff

@orpsf.bsky.social
451 followers 744 following 17 posts

ATIP-Avenir PI at @igbmc.bsky.social 🇫🇷 // Postdoc @trono-lab.bsky.social🇨🇭 & PhD @rougeulle-lab.bsky.social 🇫🇷 Fascinated in transposons 🤘 and embryogenesis 👶 Future Lab: orspf.github.io/Rosspopoff.Lab.io

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Reposted by Olga Rosspopoff
Cedric Feschotte @cedricfeschotte.bsky.social · 24/09/2026
Thrilled to see this published today! Truly special because we made the initial discovery >15 yrs ago! We found two copies of a human gene called BC200 embedded in a human poxvirus. BC200 blurs the line between gene & transposon—both functional & mutagenic! www.science.org/doi/10.1126/... 🧵1/n
science.org
Escape of the BC200 gene to a human poxvirus reveals its persistent transposition in primates
Transposable elements mobilize within and occasionally between genomes, including from host to virus. We identified two insertions of the human BC200 noncoding RNA gene in the poxvirus molluscum conta...
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Reposted by Olga Rosspopoff
Martin Steinegger 🇺🇦 @martinsteinegger.bsky.social · 13/09/2026
Fold Spacer lets you fly through protein structures (Weekend project #2). It’s my first game: I originally set out to build a racer with structures as the tracks, but was a little too crazy. So it became this instead. You can upload your own structures. 🌐 martin-steinegger.github.io/Fold-Spacer/
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Reposted by Olga Rosspopoff
Peiwei Chen @peiwei-chen.bsky.social · 17/07/2026
How do transposons jump when they’re released from host control? I babysat two chromosomes for 2 years, making sure they are ok without most piRNAs. Here’s what we found & excited to share my 1st postdoc paper: “piRNA loss unleashes episodic transposition bursts” www.biorxiv.org/content/10.6...
biorxiv.org
piRNA loss unleashes episodic transposition bursts
In Metazoa, transposon expression is suppressed by the piRNA pathway, and disruption of this pathway leads to rampant transposon expression. However, it remains unclear whether increased transposon ex...
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Reposted by Olga Rosspopoff
Riding With Robots @ridingrobots.bsky.social · 24/08/2026
From NASA: It happened again! Here's Phobos passing in front of the Sun as seen by the Perseverance rover from the surface of Mars on Aug. 12. science.nasa.gov/photojournal...
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Proceedings of the National Academy of Sciences @pnas.org · 24/08/2026
Insights from multiple #species are starting to reveal why #menopause evolved. Researchers are considering fresh theories about the #evolution of the change. A PNAS News Feature: ow.ly/httx50ZEN17 #gorillas #orcas #chimps #InclusiveFitness #GrandmotherHypothesis #cooperation #competition
Chimpanzees in Kibale National Park, Uganda, were found to undergo menopause in 2023. Their promiscuous societies point to reproductive conflict as a potential reason for the evolution of menopause. Image credit: Shutterstock/Lauren Bilboe.
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Reposted by Olga Rosspopoff
Cedric Feschotte @cedricfeschotte.bsky.social · 13/07/2026
📣 Abstract submission deadline for CSHL TEs extended to July 24! Two more weeks to submit your abstract for a short talk or poster — do it! It’s gonna be a fantastic meeting!! meetings.cshl.edu/meetings.asp...
meetings.cshl.edu
Transposable Elements
Cold Spring Harbor Laboratory Meetings & Courses -- a private, non-profit institution with research programs in cancer, neuroscience, plant biology, genomics, bioinformatics.
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The Company of Biologists @biologists.bsky.social · 18/06/2026
Thank you to organisers to James Hombría and Antónia Monteiro @monteirolab.bsky.social and everyone who joined us at this week's Workshop on 'Novelty, Co-option and Divergence During Gene Network Evolution' biologists.com/workshops #BiologistsWorkshops
Group photo of Workshop attendees
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Olga Rosspopoff @orpsf.bsky.social · 18/06/2026
Cannot express how much fun I had the past few days at the workshop “Novelty, Co-option and Divergence During Gene Network Evolution” organized by James Hombría and Antónia Monteiro ! This would not have been possible without the support of @biologists.bsky.social
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Heemskerk Lab @heemskerklab.bsky.social · 18/05/2026
New preprint! We show that cell fate can be predicted from a snapshot of combinatorial signaling — and the underlying map is a single angle in signaling space. Work by first authors Bassit Fijabi and Seth Teague and collaboration with @davidbrueckner.bsky.social. www.biorxiv.org/content/10.6...
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Claudia Keller Valsecchi @kellervalsecchi.bsky.social · 08/05/2026
Two new papers 📖 from our lab 1️⃣ What is epigenetics (and why X inactivation is?) rdcu.be/fhzSz and 2️⃣ A Baculovirus-based tool to express any gene of interest with high efficiency in Anopheles cells rdcu.be/fhzTy
rdcu.be
The epigenetic nature of X chromosome inactivation
Nature Reviews Genetics - In this Journal Club, Claudia Keller Valsecchi recalls two seminal studies by Csankovszki et al. and by Wutz and Jaenisch that defined X-chromosome inactivation as an...
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 07/05/2026
#RIP Pierre Chambon (1931-2026) via @alainberetz.bsky.social one of the last giants in biology: PARP, nuclear receptors, RNA Pol II, nucleosome, promoters, split genes
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Benoit Bruneau @benoitbruneau.bsky.social · 30/04/2026
But wait! There’s more! So you thought you knew nucleosome structure? Think again! @vram142.bsky.social @gladstoneinst.bsky.social and @genophoria.bsky.social @arcinstitute.org show that there is plenty of distortion largely due to TFs butting in www.nature.com/articles/s41...
nature.com
Pervasive and programmed nucleosome distortion on single chromatin fibres - Nature
An analytical pipeline called Iteratively Defined Lengths of Inaccessibility (IDLI) maps the genome-wide occupancy of a range of nucleosome types and shows that most nucleosomes exhibit programmed ‘di...
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sandraduharcourt.bsky.social @sandraduharcourt.bsky.social · 20/04/2026
now published at BMC Biology! rdcu.be/fdITD
rdcu.be
The tiny germline chromosomes of Paramecium aurelia have an exceptionally high recombination rate and are capped by a new class of Helitrons
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Thomas Balan @thomasbalan.bsky.social · 20/04/2026
Really happy to share that our preprint is now published in @narjournal.bsky.social! 🎉
academic.oup.com
A developmental condensin I complex assists the Paramecium PiggyMac domesticated transposase during programmed DNA elimination
Abstract. Prokaryotes and eukaryotes use diverse strategies to cope with invading mobile genetic elements, including programmed DNA elimination (PDE). In t
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Reposted by Olga Rosspopoff
sandraduharcourt.bsky.social @sandraduharcourt.bsky.social · 08/04/2026
Our latest publication is now out at Genome Biology! link.springer.com/article/10.1... We uncover a unique association between a H3K27me3 reader complex and active transcription. A thread with our key findings: (1/8) #TEsky #Polycomb #transcription #smallRNAs
link.springer.com
A H3K27me3 reader complex couples H3K27me3 accumulation to nascent transcription of transposable elements in Paramecium - Genome Biology
Background The ability to deposit histone H3K27-trimethyl (me3) marks is essential for transcriptional repression by Polycomb Repressive Complex 2 (PRC2). This is largely attributed to Polycomb repres...
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Olga Rosspopoff @orpsf.bsky.social · 13/03/2026
Very happy to have been selected for the Young investigator award ✨ See you in Copenhangen folks ! Many thanks to @official-smbe.bsky.social !!
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Reposted by Olga Rosspopoff
Ana Gázquez-Gutiérrez @anagazquezg.bsky.social · 05/03/2026
I'm so happy to share our latest paper! Now out in @narjournal.bsky.social 🥳 Did you know that transposable elements embedded in mRNAs can form dsRNA and activate innate immunity? 🧬🦠 Have a look! academic.oup.com/nar/article/... #TEsky #RNAsky #RNAbiology #immunity #NAR
academic.oup.com
Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
Abstract. The type I interferon (IFN) response is the main innate immune pathway against viruses in mammals. This pathway must be tightly regulated to prev
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Reposted by Olga Rosspopoff
Timothy Fuqua @timothyfuqua.bsky.social · 10/02/2026
I'm looking for a Swiss department to host me for an SNSF Starting Grant. I research how gene expression evolves and emerges by combining wet lab + computational work in a variety of model systems (E. coli, Drosophila, yeast). More: timothyfuqua.com If your department might be a match, let’s chat!
timothyfuqua.com
Home | Timothy Fuqua
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Reposted by Olga Rosspopoff
Physics of Life Dresden @poldresden.bsky.social · 05/02/2026
⚡👩‍🔬Electrical signals are key for promoting organ regenerative growth, a new study! Out now in Science Advances, from the Mateus group @ritamateus.bsky.social at PoL and @mpi-cbg.de along with the lab of Frank Jülicher @mpipks.bsky.social Read the news here: tud.link/7jzptz Video:©️ Mateus group
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Melanie Blokesch @mblokesch.bsky.social · 03/02/2026
This feeling of panic when university tells you that ordering system will undergo change+you cannot order for 10 days 😰Tried to order primers ahead of time but as new data come in, I feel paralyzed to not react+plan follow-up experiments😆 Even after being PI for 17yrs, my❤️ for science never changed!
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Danica Milovanović @1995dana.bsky.social · 29/01/2026
It is finally out! If you are interested in TE-derived CREs, and newly described, but evolutionary old KZFP-TE mechanistic modalities, read it at www.cell.com/cell-reports.... Thankful to everyone who took part in this work, namely @orpsf.bsky.social and other @trono-lab.bsky.social members. 🫀🧬✨
cell.com
Tissue-specific restriction of transposon-derived regulatory elements safeguards cell-type identity
Milovanović et al. uncover a mechanism by which KZFPs restrict the activity of transposon-derived cis-regulatory elements to safeguard cardiomyocyte functionality. This work extends the classical TE-K...
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Olga Rosspopoff @orpsf.bsky.social · 30/01/2026
🚨 The final version is out: how transposons help keep our hearts beating ❤️ Proud of this one with @1995dana.bsky.social, huge thanks to @trono-lab.bsky.social. Give it a read! #TEsky
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Rougeulle lab @rougeulle-lab.bsky.social · 19/01/2026
New paper: Remodeling of XIST regulatory landscape during primate evolution We are glad to share with you our latest publication investigating the evolution of XIST regulation in primates ES cells. urlr.me/eyG38M @manucazottes.bsky.social @crougeulle.bsky.social @charbel-alfeghaly.bsky.social
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Sven Klumpe @svenklumpe.bsky.social · 13/01/2026
We are very excited to see this work out in its final form at Ultramicroscopy! Knife edge measurements of beam shapes and improved scanned versus shaped beam material removal comparisons. Find the OA article here: doi.org/10.1016/j.ul...
doi.org
Redirecting
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Guillaume Andrey @guandrey.bsky.social · 12/01/2026
Our work on #RegulatoryTrajectories is out today in Nat. Comms: www.nature.com/articles/s41... Led by @raquelrouco.bsky.social, this study establishes a new framework to study how enhancer landscapes act sequentially at developmental loci and are silenced to shape gene expression patterns. (1/n)
nature.com
Client Challenge
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MadScientist @mads100tist.bsky.social · 16/09/2025
This is the equivalent of Jesus on a toast for developmental biologists 🧪
A dark stain on a bow with the shape on some sort of embryo. You can see a head, the trunk, limb buds
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Simon Cook @drsimoncook.bsky.social · 23/12/2025
Christmas has come early. Fantastic to see this beautiful study from Peter Rugg-Gunn's lab at The Babraham Institute published today. Congratulations to Matteo Mole, Sarah Elderkin, Irene Zorzan and all other authors! www.cell.com/cell/fulltex...
cell.com
Modeling human embryo implantation in vitro
Building an in vitro model of receptive endometrium allows investigation of human embryo implantation and early post-implantation development and recapitulates the earliest stages in establishing the ...
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Reposted by Olga Rosspopoff
Michelle Percharde @mpercharde.bsky.social · 22/12/2025
🚨Our story is published! Same bones but + dissection of MERVL’s role integrating signals from #ZGA factors, & + about pathological DUX4 activation of NOXA #TEsky. Thanks to all revs for their helpful comments improving the ms. Even #rev3 - until they ghosted us 😜 www.science.org/doi/epdf/10....
science.org
CRISPRa-mediated disentanglement of the Dux-MERVL axis in the 2C-like state, totipotency, and cell death
You have to enable JavaScript in your browser's settings in order to use the eReader.
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Reposted by Olga Rosspopoff
Graziano Martello @grazianomartello.bsky.social · 11/12/2025
🚨 New paper out! A human epiblast model reveals how dynamic TGF‑β signalling controls epithelial identity in early mammalian development Here is the full paper: rdcu.be/eSWEs 🧵 A twittorial: THREAD
rdcu.be
A human epiblast model reveals dynamic TGFβ-mediated control of epithelial identity during mammalian epiblast development
Nature Cell Biology - The authors optimize an in vitro human epiblast model, which they utilize to show that early TGFβ family inhibition prevents epithelial identity, whereas it is...
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Agnese Loda @agneseloda.bsky.social · 15/12/2025
Very happy to share our paper rdcu.be/eUImj out today in @natcellbio.nature.com 🎉🎉🎉 We uncover an unexpected role for endogenous Xist RNA in regulating X-linked genes that escape X-inactivation.
rdcu.be
Escape from X inactivation is directly modulated by Xist noncoding RNA
Nature Cell Biology - The authors show that increased Xist RNA levels can induce de novo silencing of genes that normally escape X inactivation. SPEN depletion prevents the silencing of escape...
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Giovanni D’Angelo @giodang.bsky.social · 19/12/2025
Join us for the 2026 Glycolipid & Sphingolipid Biology Gordon Research Conference (GRC). 📍 Renaissance Tuscany Il Ciocco (Italy) 🗓️ March 22 - 27, 2026 Theme: "Molecular Codes of Cell Identity and Recognition" #LipidResearch #Sphingolipids #GRC2026 #ScienceConference #Lipidtime
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Development @dev-journal.bsky.social · 03/12/2025
Attending #EMBOevoChromo25 next week? Our Reviews Editor @ingridtsang.bsky.social will be attending - feel free to talk to her about the journal or @biologists.bsky.social activities!
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Sergio Menchero @sermenchero.bsky.social · 02/12/2025
The new issue @cp-devcell.bsky.social brings the final form of our opossum heterochrony work www.cell.com/developmenta... And it also brings two great papers from @oliveringe.bsky.social @santoslab.bsky.social and @tobyandrews.bsky.social @rashmi-priya.bsky.social 🙌 great #DevBio from @crick.ac.uk
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Michael Hiller @hillermich.bsky.social · 23/11/2025
Happy to present TOGA2, developed by Yury Malovichko @ymalovichko.bsky.social, the faster, memory-efficient & more accurate TOGA1 successor (github.com/hillerlab/TO...). And annotations, orthologs & gene loss/dup data generated with 4 references for 883 placental mammal and with 5 refs for 676 ...
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Current Biology @currentbiology.bsky.social · 20/11/2025
Check out our latest issue where we interview Cassandra Extavour, who studies the evolution of the genetic mechanisms employed during early animal embryogenesis to specify cell fate, development, and differentiation at Harvard University. www.cell.com/current-biol...
cell.com
Q & A
Interview with Cassandra Extavour, who studies the evolution of the genetic mechanisms employed during early animal embryogenesis to specify cell fate, development, and differentiation at Harvard Univ...
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Cedric Feschotte @cedricfeschotte.bsky.social · 18/11/2025
TE x ZFP = Evolution! Writing this with Olga @orpsf.bsky.social & Didier @trono-lab.bsky.social was a major highlight of my 🇨🇭sabbatical. Such a treat! 🍫Hope you enjoy it as much as we enjoy piecing it together.
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Olga Rosspopoff @orpsf.bsky.social · 15/11/2025
Thrilled to share our new review in Current Opinion in Genetics & Development on TE driven innovation in gene regulation🤘. I am honored to be part of this with two major TE aficionados @cedricfeschotte.bsky.social and @trono-lab.bsky.social #TEsky #TEworldwide authors.elsevier.com/c/1m6MC,LqAZ...
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EMBL Events @events.embl.org · 06/11/2025
Welcome to Day 3 of #EMBOMobileGenome 🙌🏼 While this morning's session is already underway, here's a few snaps from yesterday's 🔸last minute breakthrough talk 🔸 ➡️ 'Transposable element co-option drives transcription factor neofunctionalization' presented by Olga Rosspopoff (EPFL, Switzerland)
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Olga Rosspopoff @orpsf.bsky.social · 05/11/2025
Had an absolute blast presenting my “Last Minute Breakthrough talk” at #EMBOmobilegenome today! 🔥 What an incredible crowd, the energy in the room was unreal. Huge thanks to the organizers for selecting me and to everyone who came, asked questions, and made it such a fun session! 🙌
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Dylan Burnette @mag2art.bsky.social · 04/11/2025
An iPSC-derived heart muscle cell assembling sarcomeres videoed through a spinning disk confocal microscope by Burnette Lab graduate student, Emma Koory. Alpha-actinin-2 is shown. Colors denote Z slices (red-bottom; green-middle; blue-top). Movie length- 40 hours.
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EMBL Events @events.embl.org · 04/11/2025
Welcome to Day 1 of 'The mobile genome: genetic and physiological impacts of transposable elements'! 🧬 The opening remarks by Julius Brennecke accompanied by his fellow scientific organisers: 🔹Déborah Bourc'his 🔹Josefa González 🔹Joseph Peters #EMBOMobileGenome
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Oded Rechavi @odedrechavi.bsky.social · 31/10/2025
“The bad review will come from your list of suggested reviewers”
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Campàs Lab @campaslab.bsky.social · 28/10/2025
Really excited to present the results of a fantastic collaboration with Jesse Veenvliet @jesseveenvliet.bsky.social @mpi-cbg.de @poldresden.bsky.social 🤩 We find a unique mechanism for body axis elongation in mammals, different from other vertebrate species ➡️ www.biorxiv.org/content/10.1...
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Jesse Veenvliet @jesseveenvliet.bsky.social · 28/10/2025
📣 New preprint! Stoked to share a fantastic collaboration with @campaslab.bsky.social! We discover a unique mammalian mechanism for body axis elongation using mouse and human gastruloids, and confirm central findings in mouse embryos. Check out the 🧵 👇 @mpi-cbg.de @poldresden.bsky.social
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Gioele La Manno @gioelelamanno.bsky.social · 16/10/2025
🧠 The Lipid #Brain Atlas is out now! If you think #lipids are boring and membranes are all the same, prepare to be surprised. Led by @lucafusarbassini.bsky.social with Giovanni D'Angelo's lab, we mapped membrane lipids in the mouse brain at high resolution. www.biorxiv.org/cgi/content/...
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Prachiti Moghe @prachitimoghe.bsky.social · 10/10/2025
How do embryos develop robustly despite variability in gene expression, cell properties, and tissue growth? In our new review, we explore how optimal selection of coupled parameters can contribute to robustness in development. Have a look at the article: doi.org/10.1016/j.tc...
doi.org
Redirecting
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Guillaume Bourque @guilbourque.bsky.social · 09/10/2025
🚨 New paper alert on telomeres! 🚨 Something different from the group! Thanks to Yuxin, a talented student in the lab, we used long-reads in 75 human trios to study telomeres and their inheritance.
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Kurianlab @kurianlab.bsky.social · 08/10/2025
We lost another Gem of a scientist: www.cam.ac.uk/research/new... His work inspired so many of us, such a brilliant mind and a kind human Apart from rewriting our fundamental understanding of cell identity, his love for science is equally legendary
youtube.com
"I was the worst out of 250." John Gurdon, Nobel Prize in Physiology or Medicine 2012
YouTube video by Nobel Prize
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Miki Ebisuya @ebisuyamiki.bsky.social · 08/10/2025
New preprint from the lab! We discovered a transient fluidization in the basal region of human forebrains by tracking microdroplets in cerebral organoids.This “basal fluidization”, absent in gorilla and mouse, may contribute to greater surface expansion in human forebrains 1/ doi.org/10.1101/2025...
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Institut Curie @institutcurie.bsky.social · 01/10/2025
🔬For the 2025 Fête de la Science, Institut Curie opens its doors to the public! Follow the steps of Marie Curie’s research in Paris and explore the fascinating world of biology. ⏩https://www.fetedelascience.fr/la-fete-de-la-science-2025-l-institut-curie
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