Rowan Mac Gabhann
rmacgabhann.bsky.social
Rowan Mac Gabhann
@rmacgabhann.bsky.social
Doctoral candidate in the Uri Frank Lab. Studying epigenetics in Hydractinia.
Reposted by Rowan Mac Gabhann
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
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.
www.nature.com
November 18, 2025 at 12:00 PM
Reposted by Rowan Mac Gabhann
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!
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...
rdcu.be
October 29, 2025 at 1:40 PM
Reposted by Rowan Mac Gabhann
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...
September 24, 2025 at 3:12 PM
Reposted by Rowan Mac Gabhann
'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.
June 27, 2025 at 9:36 AM
Reposted by Rowan Mac Gabhann
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
June 20, 2025 at 1:24 PM
Reposted by Rowan Mac Gabhann
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...
March 24, 2025 at 12:03 PM
Reposted by Rowan Mac Gabhann
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...
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...
www.nature.com
March 3, 2025 at 6:20 PM
Reposted by Rowan Mac Gabhann
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.
March 3, 2025 at 7:26 PM
Reposted by Rowan Mac Gabhann
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
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.
tinyurl.com
January 8, 2025 at 10:24 PM
Reposted by Rowan Mac Gabhann
#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
January 6, 2025 at 7:36 PM
Reposted by Rowan Mac Gabhann
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
December 4, 2024 at 10:50 AM
Reposted by Rowan Mac Gabhann
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
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...
rdcu.be
November 14, 2024 at 5:15 PM