James Gahan
@jgahan.bsky.social
Associate Professor and ERC Starting Awardee at University of Galway! I work on early animal evolution with a particular interest in gene regulation and chromatin!
https://gahanlab.com
https://chromosome.ie/groups/gahan/
๐ณ๏ธโ๐๐ฎ๐ช He/Him
https://gahanlab.com
https://chromosome.ie/groups/gahan/
๐ณ๏ธโ๐๐ฎ๐ช He/Him
Pinned
James Gahan
@jgahan.bsky.social
ยท Oct 29
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
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!
Reposted by James Gahan
3 lecturer jobs at School of Biological sciences at Bristol! Apply by March 8!
www.bristol.ac.uk/jobs/find/de...
www.bristol.ac.uk/jobs/find/de...
Details | Working at Bristol | University of Bristol
www.bristol.ac.uk
February 11, 2026 at 12:48 PM
3 lecturer jobs at School of Biological sciences at Bristol! Apply by March 8!
www.bristol.ac.uk/jobs/find/de...
www.bristol.ac.uk/jobs/find/de...
Reposted by James Gahan
A position with prospects! We offer excellent researchers again the possibility to apply for a position as a Leader of a Lise Meitner Research Group in all areas of #science. Applications are possible between February 11th and April 15th, 2026. www.mpg.de/lise-meitner... #lisemeitnergroups
February 11, 2026 at 8:31 AM
A position with prospects! We offer excellent researchers again the possibility to apply for a position as a Leader of a Lise Meitner Research Group in all areas of #science. Applications are possible between February 11th and April 15th, 2026. www.mpg.de/lise-meitner... #lisemeitnergroups
Reposted by James Gahan
Applications are now open for funded ECR places at our Workshop 'Integrating Multi-Modal, Multi-Scale Models of Cardiovascular Disease Mechanisms', organised by Jennifer Davis, Christine Mummery & Beth Pruitt. Find out more & apply to attend: biologists.com/workshops/no...
@sharday-penn.bsky.social
@sharday-penn.bsky.social
February 11, 2026 at 1:42 PM
Applications are now open for funded ECR places at our Workshop 'Integrating Multi-Modal, Multi-Scale Models of Cardiovascular Disease Mechanisms', organised by Jennifer Davis, Christine Mummery & Beth Pruitt. Find out more & apply to attend: biologists.com/workshops/no...
@sharday-penn.bsky.social
@sharday-penn.bsky.social
Reposted by James Gahan
Postdoc position on Asgard archaea in Thiagoโs new lab for someone well trained in biochemistry, cloning, and protein purification:
international.au.dk/about/profil...
international.au.dk/about/profil...
Postdoc in Archaea Microbiology - Vacancy at Aarhus University
Vacancy at Department of Biology - Microbiology, Aarhus University
international.au.dk
February 10, 2026 at 2:36 PM
Postdoc position on Asgard archaea in Thiagoโs new lab for someone well trained in biochemistry, cloning, and protein purification:
international.au.dk/about/profil...
international.au.dk/about/profil...
Perhaps some merch for the next Choanocon ๐
February 8, 2026 at 1:18 PM
Perhaps some merch for the next Choanocon ๐
As a choanoflagellate biologist I need this printed on a mug!
February 8, 2026 at 9:23 AM
As a choanoflagellate biologist I need this printed on a mug!
Reposted by James Gahan
Symbiotic entrenchment through ecological Catch-22: Cell www.cell.com/cell/fulltex...
Symbiotic entrenchment through ecological Catch-22
A symbiotic rove beetle develops a stealth phenotype by silencing production of its
hydrocarbon pheromones, enabling it to infiltrate ant colonies, steal ant pheromones,
and achieve social acceptance ...
www.cell.com
February 7, 2026 at 3:45 PM
Symbiotic entrenchment through ecological Catch-22: Cell www.cell.com/cell/fulltex...
Reposted by James Gahan
๐ฃ next Friday weekly DSCB Seminar tomorrow
@devstempasteur.bsky.social
๐๏ธ 2026 Friday Feb. 6th
๐ฃ11am
๐Amphi Ullmann
Detlev Arendt, Ph.D.
Centre for Organismal Studies, University of Heidelberg,
EMBL Heidelberg, Germany
Animal evolution: a cell type perspective
Invited by Thibaut Brunet
@devstempasteur.bsky.social
๐๏ธ 2026 Friday Feb. 6th
๐ฃ11am
๐Amphi Ullmann
Detlev Arendt, Ph.D.
Centre for Organismal Studies, University of Heidelberg,
EMBL Heidelberg, Germany
Animal evolution: a cell type perspective
Invited by Thibaut Brunet
February 4, 2026 at 12:14 PM
๐ฃ next Friday weekly DSCB Seminar tomorrow
@devstempasteur.bsky.social
๐๏ธ 2026 Friday Feb. 6th
๐ฃ11am
๐Amphi Ullmann
Detlev Arendt, Ph.D.
Centre for Organismal Studies, University of Heidelberg,
EMBL Heidelberg, Germany
Animal evolution: a cell type perspective
Invited by Thibaut Brunet
@devstempasteur.bsky.social
๐๏ธ 2026 Friday Feb. 6th
๐ฃ11am
๐Amphi Ullmann
Detlev Arendt, Ph.D.
Centre for Organismal Studies, University of Heidelberg,
EMBL Heidelberg, Germany
Animal evolution: a cell type perspective
Invited by Thibaut Brunet
Reposted by James Gahan
Sign up date coming quickly!
Come join us in beautiful Roscoff for this Conference Jacques Monod on Developmental regulation: from molecular to ecological niches
May 18-22, 2026 Roscoff, France
Abstract deadline: January 31, 2026
Apply here: cjm.sb-roscoff.fr/en
Come join us in beautiful Roscoff for this Conference Jacques Monod on Developmental regulation: from molecular to ecological niches
May 18-22, 2026 Roscoff, France
Abstract deadline: January 31, 2026
Apply here: cjm.sb-roscoff.fr/en
January 15, 2026 at 10:31 PM
Sign up date coming quickly!
Come join us in beautiful Roscoff for this Conference Jacques Monod on Developmental regulation: from molecular to ecological niches
May 18-22, 2026 Roscoff, France
Abstract deadline: January 31, 2026
Apply here: cjm.sb-roscoff.fr/en
Come join us in beautiful Roscoff for this Conference Jacques Monod on Developmental regulation: from molecular to ecological niches
May 18-22, 2026 Roscoff, France
Abstract deadline: January 31, 2026
Apply here: cjm.sb-roscoff.fr/en
Reposted by James Gahan
There's still time to apply to be a 2026 @dev-journal.bsky.social Pathway to Independence fellow
For those about to apply for their first independent academic position, the programme offers
- mentoring
- leadership training
- profile rising
- networking
journals.biologists.com/dev/pages/pi...
For those about to apply for their first independent academic position, the programme offers
- mentoring
- leadership training
- profile rising
- networking
journals.biologists.com/dev/pages/pi...
Pathway to Independence programme | Development | The Company of Biologists
Pathway to Independence programme | Development | The Company of Biologists
Development's Pathway to Independence programme
Launched in 2022, Developmentโs Pathway Independence programm...
journals.biologists.com
January 13, 2026 at 5:29 PM
There's still time to apply to be a 2026 @dev-journal.bsky.social Pathway to Independence fellow
For those about to apply for their first independent academic position, the programme offers
- mentoring
- leadership training
- profile rising
- networking
journals.biologists.com/dev/pages/pi...
For those about to apply for their first independent academic position, the programme offers
- mentoring
- leadership training
- profile rising
- networking
journals.biologists.com/dev/pages/pi...
Reposted by James Gahan
The Young Investigator Travel Award provides support for young researchers (postdoctoral researchers and graduate students) to attend SMBE2026.
๐จ Award applications
smbe2026.org/abstracts
#SMBE2026
๐จ Award applications
smbe2026.org/abstracts
#SMBE2026
January 13, 2026 at 10:06 AM
The Young Investigator Travel Award provides support for young researchers (postdoctoral researchers and graduate students) to attend SMBE2026.
๐จ Award applications
smbe2026.org/abstracts
#SMBE2026
๐จ Award applications
smbe2026.org/abstracts
#SMBE2026
Reposted by James Gahan
EMBO fosters life science excellence at every level โ nationally, across Europe and globally โ through its programmes, scientific #publishing, #policy as well as #innovation. ๐งช
Our focus this week: #Norway
https://www.embo.org/the-embo-communities/embo-communities-by-country/focus-on-norway/
Our focus this week: #Norway
https://www.embo.org/the-embo-communities/embo-communities-by-country/focus-on-norway/
January 12, 2026 at 7:50 AM
EMBO fosters life science excellence at every level โ nationally, across Europe and globally โ through its programmes, scientific #publishing, #policy as well as #innovation. ๐งช
Our focus this week: #Norway
https://www.embo.org/the-embo-communities/embo-communities-by-country/focus-on-norway/
Our focus this week: #Norway
https://www.embo.org/the-embo-communities/embo-communities-by-country/focus-on-norway/
Congratulations @meleonora-rossi.bsky.social and all the authors! Very interesting study!
Our latest: Independent origins of spicules reconcile paleontological and molecular evidence of sponge evolutionary history, led by @meleonora-rossi.bsky.social with help from friends @bristolpalaeo.bsky.social including @anariesgo.bsky.social @evopalaeo.bsky.social Davide Pisani and many others
Independent origins of spicules reconcile paleontological and molecular evidence of sponge evolutionary history
Sponges have a cryptic Ediacaran history because ancestral sponges were soft-bodied and had low fossilization potential.
www.science.org
January 8, 2026 at 3:16 PM
Congratulations @meleonora-rossi.bsky.social and all the authors! Very interesting study!
Reposted by James Gahan
Open Senior Bioinformatician position at
@sangerinstitute.bsky.social
Tree of Life, to work on the Biodiversity Cell Atlas initiative with @marakat.bsky.social and me.
๐ Apply by January 18
๐ sanger.wd103.myworkdayjobs.com/en-US/Wellco...
Please share with anyone who might be interested!
@sangerinstitute.bsky.social
Tree of Life, to work on the Biodiversity Cell Atlas initiative with @marakat.bsky.social and me.
๐ Apply by January 18
๐ sanger.wd103.myworkdayjobs.com/en-US/Wellco...
Please share with anyone who might be interested!
Senior Bioinformatician - Biodiversity Cell Atlas
Do you want to help us improve human health and understand life on Earth? Make your mark by shaping the future to enable or deliver life-changing science to solve some of humanityโs greatest challenge...
sanger.wd103.myworkdayjobs.com
January 2, 2026 at 1:12 PM
Open Senior Bioinformatician position at
@sangerinstitute.bsky.social
Tree of Life, to work on the Biodiversity Cell Atlas initiative with @marakat.bsky.social and me.
๐ Apply by January 18
๐ sanger.wd103.myworkdayjobs.com/en-US/Wellco...
Please share with anyone who might be interested!
@sangerinstitute.bsky.social
Tree of Life, to work on the Biodiversity Cell Atlas initiative with @marakat.bsky.social and me.
๐ Apply by January 18
๐ sanger.wd103.myworkdayjobs.com/en-US/Wellco...
Please share with anyone who might be interested!
Reposted by James Gahan
Modern biology research is biased towards investigating genes that are widely conserved and present in humans. What about genes that ARE widely conserved but NOT present in humans? Can genes missing from humans tell us something about what makes our biology different from that of other animals? 1/8
December 31, 2025 at 7:29 PM
Modern biology research is biased towards investigating genes that are widely conserved and present in humans. What about genes that ARE widely conserved but NOT present in humans? Can genes missing from humans tell us something about what makes our biology different from that of other animals? 1/8
Reposted by James Gahan
Have you ever wondered what difference it makes to have 1 or 2 X chromosomes in your cells?
โจ Iโm excited to share that our paper is now out!
Looking for some X-mas content featuring an actual X? ๐ Hereโs the paper: ๐ www.cell.com/current-biol...
โจ Iโm excited to share that our paper is now out!
Looking for some X-mas content featuring an actual X? ๐ Hereโs the paper: ๐ www.cell.com/current-biol...
X chromosome dosage in respiratory stem cells is critical for post-embryonic development and survival
Tourniรจre et al. uncover the biological roles of sex chromosome dosage compensation,
showing it is broadly dispensable except in the respiratory system during metamorphosis,
where X chromosome dose de...
www.cell.com
December 22, 2025 at 4:10 PM
Have you ever wondered what difference it makes to have 1 or 2 X chromosomes in your cells?
โจ Iโm excited to share that our paper is now out!
Looking for some X-mas content featuring an actual X? ๐ Hereโs the paper: ๐ www.cell.com/current-biol...
โจ Iโm excited to share that our paper is now out!
Looking for some X-mas content featuring an actual X? ๐ Hereโs the paper: ๐ www.cell.com/current-biol...
Reposted by James Gahan
Lovely Xmas gift ๐โour paper is out today in @natecoevo.nature.com www.nature.com/articles/s41...! Huge thanks to everyone who made it possible, especially @aelek.bsky.social and @arnausebe.bsky.social
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...
www.nature.com
December 22, 2025 at 11:10 AM
Lovely Xmas gift ๐โour paper is out today in @natecoevo.nature.com www.nature.com/articles/s41...! Huge thanks to everyone who made it possible, especially @aelek.bsky.social and @arnausebe.bsky.social
Reposted by James Gahan
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...
www.nature.com/articles/s41...
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...
www.nature.com
December 22, 2025 at 10:12 AM
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...
www.nature.com/articles/s41...
Reposted by James Gahan
We are thrilled to invite you to the Michael Sars Symposium 2026 - Living systems in a variable ocean, together with our co-organizers at @cbubergen.bsky.social! Mark June 4, 2026 in your calendars, and watch out for our speaker lineup reveal in the new year ๐
December 19, 2025 at 2:54 PM
We are thrilled to invite you to the Michael Sars Symposium 2026 - Living systems in a variable ocean, together with our co-organizers at @cbubergen.bsky.social! Mark June 4, 2026 in your calendars, and watch out for our speaker lineup reveal in the new year ๐
I recommend any Developmental biologists planning to start the road to becoming a PI next year to apply! The help and guidance you will receive are valuable but being a part of a cohort of people living through the same experiences is worth its weight in Gold!
We were delighted to welcome our most recent Pathway to Independence (PI) fellows to our offices at @biologists.bsky.social for leadership training.
Find out more about our PI fellows and how to apply here:
journals.biologists.com/dev/pages/pi...
Application deadline: 2 February 2026.
Find out more about our PI fellows and how to apply here:
journals.biologists.com/dev/pages/pi...
Application deadline: 2 February 2026.
December 18, 2025 at 9:28 AM
I recommend any Developmental biologists planning to start the road to becoming a PI next year to apply! The help and guidance you will receive are valuable but being a part of a cohort of people living through the same experiences is worth its weight in Gold!
Reposted by James Gahan
Stoked that this paper, summarizing a vast series of experiments from past and present members of the team is out. A great way to end this year.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Whole body regeneration deploys a rewired embryonic gene regulatory network logic - Nature Communications
To what extent regeneration recapitulates embryonic development is a longstanding question. Here, they show that embryonic gene modules are re-used, rewired, and interconnected to specific injury-indu...
www.nature.com
December 17, 2025 at 3:57 PM
Stoked that this paper, summarizing a vast series of experiments from past and present members of the team is out. A great way to end this year.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by James Gahan
๐กHow does nutrition regulate cell cycle in stem cells? Check out our new paper from @prhsteinmetz.bsky.social lab & @msarscentre.bsky.social, out now in
@plosbiology.org (plos.io/48J2o6P)
#SeaAnemone #Nematostella #StemCell #CellCycle #Quiescence #TORsignalling 1/12
@plosbiology.org (plos.io/48J2o6P)
#SeaAnemone #Nematostella #StemCell #CellCycle #Quiescence #TORsignalling 1/12
Prolonged starvation deepens quiescence in Vasa2/Piwi1-expressing cells of a sea anemone
Animals with lifelong growth modulate cell proliferation in response to nutrient availability, but the underlying mechanisms are not fully understood. This study shows that starvation induces a revers...
plos.io
December 16, 2025 at 4:48 PM
๐กHow does nutrition regulate cell cycle in stem cells? Check out our new paper from @prhsteinmetz.bsky.social lab & @msarscentre.bsky.social, out now in
@plosbiology.org (plos.io/48J2o6P)
#SeaAnemone #Nematostella #StemCell #CellCycle #Quiescence #TORsignalling 1/12
@plosbiology.org (plos.io/48J2o6P)
#SeaAnemone #Nematostella #StemCell #CellCycle #Quiescence #TORsignalling 1/12
Congratulations Eudald and the rest of the team! Great so see this out!
December 16, 2025 at 6:56 PM
Congratulations Eudald and the rest of the team! Great so see this out!
Reposted by James Gahan
Excited to share our story nutrition and cell quiescence in sea anemones, great postdoctoral work of
@eudaldpascual.bsky.social
Finally out in @plosbiology.org
And thanks to @msarscentre.bsky.social for the nice news piece:
www.uib.no/en/michaelsa...
@eudaldpascual.bsky.social
Finally out in @plosbiology.org
And thanks to @msarscentre.bsky.social for the nice news piece:
www.uib.no/en/michaelsa...
December 16, 2025 at 6:24 PM
Excited to share our story nutrition and cell quiescence in sea anemones, great postdoctoral work of
@eudaldpascual.bsky.social
Finally out in @plosbiology.org
And thanks to @msarscentre.bsky.social for the nice news piece:
www.uib.no/en/michaelsa...
@eudaldpascual.bsky.social
Finally out in @plosbiology.org
And thanks to @msarscentre.bsky.social for the nice news piece:
www.uib.no/en/michaelsa...
Congratulations @inesfournon.bsky.social ! This is a very beautiful story :)
Thrilled to share the preprint from my PhD! ๐ฅณ Where I characterised epithelial cell extrusion in a sea anemone
๐ www.biorxiv.org/content/10.6...
Big thanks to my supervisor @prhsteinmetz.bsky.social and coauthors @noahbruderer.bsky.social @lionlchristiaen.bsky.social at๐ณ๐ด @msarscentre.bsky.social โฌ๏ธ๐งต
๐ www.biorxiv.org/content/10.6...
Big thanks to my supervisor @prhsteinmetz.bsky.social and coauthors @noahbruderer.bsky.social @lionlchristiaen.bsky.social at๐ณ๐ด @msarscentre.bsky.social โฌ๏ธ๐งต
December 16, 2025 at 1:16 PM
Congratulations @inesfournon.bsky.social ! This is a very beautiful story :)