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Rowan Mac Gabhann

@rmacgabhann.bsky.social
128 followers 213 following 0 posts

Doctoral candidate in the Uri Frank Lab. Studying epigenetics in Hydractinia.

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Reposted by Rowan Mac Gabhann
Mike Connelly @michaeltconnelly.bsky.social · 17/07/2026
Happy to share that our manuscript "A chromosome-level reference genome for the colonial marine hydrozoan Podocoryna americana" is now available at G3: doi.org/10.1093/g3jo... Many thanks to @baxevanislab.bsky.social, @pcart.bsky.social, @amkatzer.bsky.social and all the co-authors!
doi.org
A chromosome-level reference genome for the colonial marine hydrozoan Podocoryna americana
Abstract. Cnidarians are important models for studying the evolution of animal development, regeneration, cell type differentiation, and allorecognition. T
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James Gahan @jgahan.bsky.social · 22/06/2026
Very saddened to learn that @wellcometrust.bsky.social has decided to no longer fund Irish researchers through their discovery grants. This is a major blow for those who do truly blue skies research in Ireland as the ecosystem (i.e. @researchireland.ie) only funds research with perceived "impact"!
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paveltomancak.bsky.social @paveltomancak.bsky.social · 18/06/2026
Big paper from @hejnol.bsky.social lab. Title says it all. Congrats, Stanislav Kremnyov and the team. www.nature.com/articles/s41...
nature.com
A blastoporal organizer in a ctenophore - Nature
Experiments using the comb jelly Mnemiopsis leidyi and the sea anemone Nematostella vectensis reveal that the emergence of a core signalling pathway may have been a key innovation enabling the transit...
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All-Ireland Chromatin Consortium @aicc-ireland.bsky.social · 28/05/2026
What better way to spend a sunny day than hearing all about the amazing chromatin research happening in Ireland! ☀️ 🧬 It was a pleasure to host the @aicc-ireland.bsky.social symposium at @ucddublin.bsky.social Conway Institute yesterday - with record number of attendees, posters & temperature 🥵
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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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Manuel Irimia @mirimiam.bsky.social · 20/04/2026
Thrilled to present our comparative study on the evolution of zygotic genome activation (ZGA)!! 🥚🧬 Amazing PhD work of @campobes.bsky.social together with @fedemantica.bsky.social and many collaborators! @melisupf.bsky.social @crg.eu. Thread below 1/15 www.biorxiv.org/content/10.6...
biorxiv.org
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 22/12/2025
Excited to share the final version of our study on Nematostella cell type regulatory programs. Part of our @erc.europa.eu StG project, this was a challenging 5-year effort extraodinarily led by @aelek.bsky.social and @martaig.bsky.social. www.nature.com/articles/s41...
nature.com
Decoding cnidarian cell type gene regulation - Nature Ecology & Evolution
This study reconstructs the gene regulatory networks that define cell types in the sea anemone Nematostella vectensis, providing a valuable resource for comparative regulatory genomics and the evoluti...
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Alex de Mendoza @alexdemendoza.bsky.social · 18/11/2025
Out today, our take on 6-methyladenine #6mA evolution in Eukaryotes @natgenet.nature.com. We asked a simple question, is really DNA 6mA common across the eukaryotes? The answer is "yes" if you're a unicellular eukaryote 🦠, not so if you're multicellular 🐝🌱🍄. www.nature.com/articles/s41... 1/9
nature.com
Adenine DNA methylation associated with transcriptionally permissive chromatin is widespread across eukaryotes - Nature Genetics
Long-read sequencing in 18 unicellular eukaryotes reveals that 6mA is widespread across eukaryotes and is enriched at transcriptionally permissive regions, which are also marked by H3K4me3.
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James Gahan @jgahan.bsky.social · 29/10/2025
Very happy to see our paper published online natcomms.nature.com. Thank you to @wellcometrust.bsky.social for funding this work during my time with @robklose.bsky.social and David Booth! Thanks also to collaborators @garcialabms.bsky.social @alexdemendoza.bsky.social and the other authors!
rdcu.be
Chromatin profiling identifies putative dual roles for H3K27me3 in regulating cell type-specific genes and transposable elements in choanoflagellates
Nature Communications - Here, the authors investigate chromatin-based gene regulation in the closest relative of animal, choanoflagellates. They uncover a putative dual role for the histone...
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 24/09/2025
Happy to share the Biodiversity Cell Atlas white paper, out today in @nature.com. We look at the possibilities, challenges, and potential impacts of molecularly mapping cells across the tree of life. www.nature.com/articles/s41...
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Uri Frank @thecocodium.bsky.social · 27/06/2025
't was lovely to host @julianolab.bsky.social here @uniofgalway.bsky.social. Great presentation and lots of fun later on a pint with @jgahan.bsky.social @rmacgabhann.bsky.social @hrhorkan.bsky.social and friends.
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Uri Frank @thecocodium.bsky.social · 20/06/2025
I am looking for a new postdoc to join the lab. Interested in pluripotency, germ cells, and in investigating these in a genetically tractable cnidarian? Get in touch! We offer a long-term contract, excellent research environment, and a lovely city #Galway. www.urifranklab.org
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All-Ireland Chromatin Consortium @aicc-ireland.bsky.social · 24/03/2025
We are very excited to launch the registration for our 2025 symposium on 'Chromatin, Epigenetics and Transcription' today! Join us at @tcddublin.bsky.social on May 28th for this event featuring keynote, new PI and PhD/postdoc talks and posters! allirelandchromatinconsortium.ie/annual-meeti...
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Jordi Solana @jordisolana.bsky.social · 03/03/2025
Happy to present the peer-reviewed version of our Hydractinia Cell Atlas paper out today in Nature Communications! As I presented this back when we were in “that other” social network, let me recap the basic findings and revision items in this thread: www.nature.com/articles/s41...
nature.com
The Hydractinia cell atlas reveals cellular and molecular principles of cnidarian coloniality - Nature Communications
Here they generate a cell type atlas of the colonial cnidarian Hydractinia symbiolongicarpus, which reveals that distinct colony parts are mostly made from unique combinations of shared cell types, an...
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Uri Frank @thecocodium.bsky.social · 03/03/2025
The Hydractinia cell atlas is out. This remarkable animal has those cells, i-cells, that are pluripotent just like mammalian blastocyst inner cell mass. There is a difference, though––inner cell mass cells persist for only a few cell cycles before they differentiate; i-cells are adult cells.
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Camille Curantz @camillectz.bsky.social · 08/01/2025
New insight on gonad morphogenesis ! Our new paper reveals how germ & somatic cells interact through TGF-Beta feedback loop to drive gonad morphogenesis in Hydractinia. Check out the full paper in Science Advances ! tinyurl.com/245rw699
tinyurl.com
A positive feedback loop between germ cells and gonads induces and maintains sexual reproduction in a cnidarian
Cnidarian germ cells secrete TGF-β to induce gonad development, and gonads induce germ cells by activating Tfap2 in stem cells.
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Uri Frank @thecocodium.bsky.social · 06/01/2025
#Hydractinia takes regeneration to the extreme¬in a new preprint, Curantz et al. show that dissociated, reaggregated cells can form a new individual. We also show how they do it and which cells types actually contribute to the new individual (tip: not many of them). tinyurl.com/mr2s9zyf
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All-Ireland Chromatin Consortium @aicc-ireland.bsky.social · 04/12/2024
Our final webinar before Christmas 🎅 is coming up! We will be joined by Luciano Di Croce for his webinar on 'Dissecting Dynamics of Chromatin Function in Cell Differentiation and Cancer'. Register here: us06web.zoom.us/webinar/regi... @activemotifusa.bsky.social
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Alex de Mendoza @alexdemendoza.bsky.social · 14/11/2024
SOX and POU are crucial Transcription Factors in animal development, believed to be innovations of this group. Here we find them in unicellular relatives of animals. And hold tight, you can use a choanoflagellate 🦠 SOX gene to make a full chimeric 🐁 ! Read more here 🧵: rdcu.be/d0dPN 1/6
rdcu.be
The emergence of Sox and POU transcription factors predates the origins of animal stem cells
Nature Communications - The pluripotency program is maintained by transcription factors from the Sox and POU families. Here they identify SOX and POU factors from unicellular relatives of animals...
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