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Kumar Somyajit & Lab

@ksomyajit.bsky.social
536 followers 447 following 23 posts

Associate Professor @University of Southern Denmark, Odense, Denmark Genome-and Cell cycle-surveillance in (patho)physiology

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Reposted by Kumar Somyajit & Lab
Dirk Remus @dirkremus.bsky.social · 13/06/2026
If you have experience in biochemistry/cryo-EM, are interested in DNA replication, and would like to do a postdoc in New York - our lab has positions available! Just DM or email me with your CV.
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Alberto Ciccia @albertociccia.bsky.social · 08/06/2026
Excited to finally share our preprint on mapping the genetic interaction network of the DNA damage response with combinatorial knockout screens led by Sam Hayward, Alina Vaitsiankova, and Tomas Lama-Diaz! www.biorxiv.org/cgi/content/...
biorxiv.org
Mapping the genetic landscape of the DNA damage response with Cas12a-based combinatorial knockout screens
The DNA damage response (DDR) is a complex network of cellular pathways that ensures the faithful maintenance of our genomes upon a wide array of genomic insults. To elucidate the functional architect...
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 05/05/2026
Many congratulations Anders!!! Amazing work!!!
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Reposted by Kumar Somyajit & Lab
Alberto Ciccia @albertociccia.bsky.social · 02/05/2026
Happy to share our new review in @annualreviews.bsky.social on abasic sites and their impact on DNA replication written by @angelotaglialatela.bsky.social. www.annualreviews.org/content/jour...
annualreviews.org
Endogenous Sources of Abasic Sites and Implications for DNA Replication: Mechanisms of Fork Stalling and Recovery
Apurinic/apyrimidinic (AP) sites, also known as abasic sites, are among the most frequent DNA lesions, arising spontaneously or as intermediates in base excision repair. Their structural impediment to...
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GIIN @genomeiinetwork.bsky.social · 21/04/2026
We are excited to launch the full program for the 2026-2027 season of the Genome Integrity Italian Network webinars! Join us every first Tuesday of the month via Zoom: uzh.zoom.us/j/6598481621... Subscribe here to receive a calendar file with all webinars: docs.google.com/forms/d/e/1F...
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Annabel Quinet Lab @quinet.bsky.social · 17/04/2026
📣 New meeting on RAD51 biology! 🌐 lnkd.in/eyV8dY_S 🔬 🧬 Come explore the latest discoveries on RAD51 biology, and its central roles in DNA repair, replication, and meiosis. ✨ Fantastic invited speakers and ample opportunities for oral presentations.
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Reposted by Kumar Somyajit & Lab
Lopes_Lab @lopeslab.bsky.social · 01/04/2026
Another great opportunity for genome integrity / replication stress aficionados to attend two excellent seminars with a simple click. Join us in a few days (Tue April 7th)! 👇
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Nature @nature.com · 27/03/2026
Nature research paper: Androgen activity in the male embryonic hindbrain drives lethal PFA ependymoma go.nature.com/4t2SpS5
go.nature.com
Androgen activity in the male embryonic hindbrain drives lethal PFA ependymoma - Nature
Androgen activity in the male embryonic hindbrain prolongs hindbrain differentiation in male individuals and drives sex differences in the incidence and prognosis of posterior fossa type A (PFA) ependymoma, an aggressive childhood brain tumour.
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The Francis Crick Institute @crick.ac.uk · 23/03/2026
“I think it’s a real mistake to forget where the pipeline for all this begins.” John Diffley reflects on the importance of basic research, his mission to decode DNA replication and recreate it in the lab, and the scientific optimism of the 1960s that helped shape it. www.crick.ac.uk/news/2026-03...
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Nature Portfolio @natureportfolio.nature.com · 27/02/2026
A study published in Nature has identified a new mechanism that controls DNA’s ability to replicate – and thereby a cell’s ability to divide. A protein, PAF15, acts as the brake, preventing the replication machinery from becoming overloaded and protecting cells from replication catastrophe. 🧪
go.nature.com
PAF15–PCNA exhaustion governs the strand-specific control of DNA replication - Nature
PCNA–PAF15 has a key role in determining replisome dynamics during genome replication and protecting against genome instability.
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Reposted by Kumar Somyajit & Lab
GIIN @genomeiinetwork.bsky.social · 26/02/2026
Another great science appointment is coming up with @centromellone.bsky.social, Michele Pagano and Gergely Róna! Join us live on Tuesday, March 3rd at 5pm (Rome) / 11am (NYC). Zoom link: uniroma1.zoom.us/j/95149984403 Register here to stay in the loop: docs.google.com/forms/d/e/1F...
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 29/01/2026
Indeed, your work is so interesting and we are very much keen on exploring p15-911. Will keep you posted. Thank you.
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 29/01/2026
Can't thank enough @lundbeckfonden.bsky.social, @erc.europa.eu, @novo-nordisk.bsky.social, @cancer.dk for believing in us and supporting our research. Department of Biochemistry and Molecular Biology, University of Southern Denmark @sdu.dk We hope you enjoy reading this story. 🙏🙏🙏
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 29/01/2026
This would not have been possible without the exceptional generosity and expertise of outstanding collaborators Nataliya Petryk, Narcis-Adrian Petriman, Jens Andersen, @jespergrud.bsky.social , @hanasedlackova.bsky.social, Ole Nørregaard Jensen, @ravnskjaer-lab.bsky.social, Jonathan Brewer. 🙏🙏🙏
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 29/01/2026
The work was spearheaded by the supremely talented PhD student Gita Chhetri, and the wholehearted, indispensable contributions of the entire lab.
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 29/01/2026
Dear Colleagues, Delighted to share that our first lab paper is now published in Nature.!!! 😊😊😊 We identify a previously concealed “safety limit” in DNA replication program: cells intrinsically rate-limit PCNA via PAF15, shaping strand-specific and global replication dynamics. 👉 rdcu.be/e1bBt
rdcu.be
PAF15–PCNA exhaustion governs the strand-specific control of DNA replication
Nature - PCNA–PAF15 has a key role in determining replisome dynamics during genome replication and protecting against genome instability.
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Science X / Phys.org @sciencex.bsky.social · 28/01/2026
Cells possess a built-in limit for DNA replication, controlled by the protein PAF15, which may offer a new approach to targeting rapidly dividing cancer cells.
phys.org
Cells' built-in capacity limit for copying DNA could impact cancer treatment
For almost 60 years, scientists have tried to understand why DNA doesn't replicate wildly and uncontrollably every time a cell divides, which happens constantly.
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Reposted by Kumar Somyajit & Lab
Di Jiang @dijiang319.bsky.social · 09/01/2026
@science.org Deep contrastive learning enables genome-wide virtual screening | Science www.science.org/doi/10.1126/...
science.org
Deep contrastive learning enables genome-wide virtual screening
Recent breakthroughs in protein structure prediction have opened new avenues for genome-wide drug discovery, yet existing virtual screening methods remain computationally prohibitive. We present DrugC...
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Reposted by Kumar Somyajit & Lab
IMP @impvienna.bsky.social · 10/11/2025
🌍Open call: Junior Group Leader positions! Join a world-class biomedical research institute at the heart of the Vienna BioCenter, where curiosity drives discovery. Lead your own lab, pursue bold ideas, and shape the future of science at the IMP: www.imp.ac.at/career/open-...
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Susi Bantele @sbantele.bsky.social · 06/11/2025
𝗖𝗮𝗻 𝗰𝗲𝗹𝗹𝘀 𝗲𝘃𝗲𝗿 𝘁𝗿𝘂𝗹𝘆 𝗿𝗲𝗰𝗼𝘃𝗲𝗿 𝗳𝗿𝗼𝗺 𝗗𝗡𝗔 𝗱𝗮𝗺𝗮𝗴𝗲?Excited to share our new study “Repair of DNA double-strand breaks leaves heritable impairment to genome function”, revealing DNA repair’s hidden cost, out now @science.org tinyurl.com/5n6zw3ye. Led by @sbantele.bsky.social and Jiri Lukas.🧵👇1/n
tinyurl.com
Repair of DNA double-strand breaks leaves heritable impairment to genome function
Upon DNA breakage, a genomic locus undergoes alterations in three-dimensional chromatin architecture to facilitate signaling and repair. Although cells possess mechanisms to repair damaged DNA, it is ...
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 07/11/2025
Many many congratulations Susi!!! Wow!! Exciting to see this out! Such a great work!!👏👏👏👏
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Basil Greber @bjgreber.bsky.social · 16/10/2025
Now out in Science! Cyclin-dependent kinases (CDKs) are key regulators of the cell cycle. In @vcushing.bsky.social's magnum opus, we use #cryoEM to figure out how the CDK-activating kinase recognises CDKs to fully activate them - a key step in cell cycle control. www.science.org/doi/10.1126/...
science.org
Structural basis of T-loop–independent recognition and activation of CDKs by the CDK-activating kinase
Cyclin-dependent kinases (CDKs) are prototypical regulators of the cell cycle. The CDK-activating kinase (CAK) acts as a master regulator of CDK activity by catalyzing the activating phosphorylation o...
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 14/10/2025
Wonderful news! Many congratulations!!!
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Daniel Durocher @durocher1.bsky.social · 11/10/2025
9 days to go: * 2 x open positions! * Exceptional environment, competitive start-up package * University of Toronto appointments * Toronto has great (and peaceful) quality of life!
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Alexis Barr @alexisbarr.bsky.social · 18/09/2025
@mariasecrier.bsky.social & I are looking for an enthusiastic & excellent data scientist for a 4-year postdoc to understand cell cycle dysregulation in cancer. Deadline 15th October. Get in touch if you have any questions. Please repost! More details: www.imperial.ac.uk/jobs/search-...
imperial.ac.uk
Description
Please note that job descriptions are not exhaustive, and you may be asked to take on additional duties that align with the key responsibilities ment...
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Reposted by Kumar Somyajit & Lab
Uli Rass @u-rass.bsky.social · 03/09/2025
My first post on bsky to share our latest research in @nature.com: “DNA2 enables growth by restricting recombination-restarted replication” - defines DNA2’s essential function & elucidates links with primordial dwarfism and cancer. Thanks to the lab, collaborators & @ukri.org @acmedsci.bsky.social
nature.com
DNA2 enables growth by restricting recombination-restarted replication - Nature
DNA2 suppresses recombination-restarted replication and checkpoint activation at stalled forks, and its loss triggers recombination-dependent synthesis, checkpoint signalling and cell-cycle exit, high...
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Barbara Marte @barbmarte.bsky.social · 21/08/2025
new out in Nature www.nature.com/articles/s41...
nature.com
Targeting G1–S-checkpoint-compromised cancers with cyclin A/B RxL inhibitors - Nature
Dual cyclin A/B RxL inhibitors selectively kill small cell lung cancer cells and other cancer cells with high E2F activity.
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NealeLab @labneale.bsky.social · 31/07/2025
So utterly honoured to have been recruited, mentored and supported by this incredibly influential individual. Long may he happily retire. @gdsc-sussex.bsky.social
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Barbara Marte @barbmarte.bsky.social · 31/07/2025
new out in Nature: cell cycle meets metabolism www.nature.com/articles/s41...
nature.com
Transient APC/C inactivation by mTOR boosts glycolysis during cell cycle entry - Nature
APC/C activity is transiently inhibited to generate a pulse of glycolysis that is required for mammalian cell cycle entry.
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Syddansk Universitet @sdu.dk · 28/07/2025
Tillykke til alle nye SDU-studerende Den 28. juli er 4.415 blevet tilbudt en studieplads på Syddansk Universitet. Stort tillykke og husk at takke ja til pladsen senest den 4. august. Der er fortsat få ledige studiepladser - få et overblik her: ledigepladser.sdu.dk #studiestart #uddpol
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Journal of Cell Biology @jcb.org · 16/07/2025
Yadav, Jadhav, @hanasedlackova.bsky.social et al present a novel cell-permeable biotin-HaloTag ligand. The reported ligand expands the HaloTag toolbox by enabling in vivo labeling & providing capabilities for efficient affinity capture of protein variants from live cells rupress.org/jcb/article/...
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Ellenberg Lab @ellenberglab.bsky.social · 21/07/2025
Our new non-denaturing nanoscale 3D DNA tracing technology provides single-cell (and sister-chromatid specific!) readout of chromatin structure with 10kb genomic resolution - Check it out! www.nature.com/articles/s41... Congratulations to Kai and Oyvind!!
nature.com
Nanoscale 3D DNA tracing in non-denatured cells resolves the Cohesin-dependent loop architecture of the genome in situ - Nature Communications
A nanoscale 3D DNA tracing workflow visualizes Cohesin-dependent loops in single, structurally well-preserved cells. Computer simulations based on the tracing data give further insight into how Cohesi...
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Barbara Marte @barbmarte.bsky.social · 26/06/2025
new out in Nature, the latest on the cell cycle in fission yeast, lovely basic biology www.nature.com/articles/s41...
nature.com
Spatiotemporal orchestration of mitosis by cyclin-dependent kinase - Nature
Experiments in fission yeast show that cyclin-dependent kinase is first activated in the nucleus, from which the mitotic signal is propagated from CDK at the centrosome to the cytoplasm.
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nussenza.bsky.social @nussenza.bsky.social · 25/06/2025
Cytarabine has been the mainstay for AML treatment for over 50 years. This chemotherapy can lead to problems with movement and balance. Here we explain this neurotoxic side-effect. www.nature.com/articles/s41... Work led by Jia-Cheng Liu, Donpeng Wang and Elsa Callen and terrific collaborators!
nature.com
Mechanism of cytarabine-induced neurotoxicity - Nature
Certain antimetabolites used to treat cancer are more neurotoxic than others, and it is now shown that this is due to their greater tendency to generate DNA double-stranded breaks, whereas less n...
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Andreas Panagopoulos @apanagopoulos.bsky.social · 21/05/2025
Delighted to share that the results of my main postdoc project are now published in @nature.com 🔗 doi.org/10.1038/s415...
doi.org
Multigenerational cell tracking of DNA replication and heritable DNA damage - Nature
A multigenerational single-cell tracking approach provides a framework to dissect phenotypic plasticity at the single-cell level, offering insights into cellular processes that may resemble early even...
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 21/05/2025
Amazing work Andreas!!! Beautiful!! Huge congratulations to you, Matthias and everyone involved. 👏👏👏👏👏👏
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Grant Stewart @profstewartlab.bsky.social · 14/05/2025
Proud to present our work identifying a role for DIAPH1 and gamma-actin in regulating DSB repair and how defects in this pathway give rise to human disease. Big thanks to everyone involved, especially Beth Woodward, Sudipta Lahiri and @anoopsinghchauhan.bsky.social. www.nature.com/articles/s41...
nature.com
Inherited deficiency of DIAPH1 identifies a DNA double strand break repair pathway regulated by γ-actin - Nature Communications
DNA double strand break repair pathways ensure genome stability and prevent disease. Here the authors show that the actin nucleating factor DIAPH1 and γ-actin promote homologous recombination (HR)-dep...
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Anders Sejr Hansen @andersshansen.bsky.social · 15/05/2025
(1/n) Thread @matteomazzocca.bsky.social @domenicnarducci.bsky.social Simon Grosse-Holz @jessematthias.bsky.social preprint Q: how does chromatin move? Using MINFLUX, SPT & SRLCI, we track chromatin dynamics across 7 orders of magnitude in time to provide answers www.biorxiv.org/content/10.1...
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Lopes_Lab @lopeslab.bsky.social · 07/05/2025
Exciting PhD project available in our lab (time sensitive)! 👇
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Fena Ochs @fenaochs.bsky.social · 06/05/2025
I am overjoyed to share that I have been selected as a Lundbeck Fellow 2025. Thank you to @lundbeckfonden.bsky.social for their trust in me - My lab and I cannot wait to get started on this important work.
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Francesca Mattiroli @fmattiroli.bsky.social · 04/05/2025
Want to learn more about chromatin and its dynamics? Read this review by Charlotte and Jolijn in our lab, aimed at giving an overview on this and the ways this is dealt with during transcription, replication and damage repair. Thanks to Biochemistry for inviting us! doi.org/10.1021/acs....
doi.org
Always on the Move: Overview on Chromatin Dynamics within Nuclear Processes
Our genome is organized into chromatin, a dynamic and modular structure made of nucleosomes. Chromatin organization controls access to the DNA sequence, playing a fundamental role in cell identity and...
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Barbara Marte @barbmarte.bsky.social · 15/04/2025
this week 20 years ago, Nature published two seminal papers showing for the first time that BRCA-mutant cells were selectively sensitive to PARP inhibitors, paving the way for clinical trials and approval of PARP inhibitors for patients with BRCA-mutant ovarian and breast cancers, and beyond.
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Rémi Buisson @buissonlab.bsky.social · 11/04/2025
A beautiful News & Views by @unterholznerlab.bsky.social highlighting our latest paper in @natsmb.nature.com, where we show that transcription stress triggers an inflammatory response through the release of IL-1α. rdcu.be/ehkTV
rdcu.be
Transcription stress causes an inflammatory response via release of IL-1α
Nature Structural & Molecular Biology - DNA damage can be sensed as a danger signal by the innate immune system. Bournique et al. show that the transcription stress caused by DNA lesions can...
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Mark Hedglin @hedglinlab.bsky.social · 01/04/2025
Excited to share our new pre-print. Direct, ensemble FRET assays developed by our lab reveal that assembly of Rad51 filaments at stalled replication sites via RPA/Rad51 exchange causes complete & irreversible PCNA unloading. Big implications for interplay between human DNA damage tolerance pathways
biorxiv.org
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Ravnskjaer_lab @ravnskjaer-lab.bsky.social · 01/04/2025
An insightful preview by Scott Friedman highlighting our recent findings on the role of hepatic stellate cells in metabolic regulation 🙌🏻 Out today in Cell Metabolism @cp-cellmetabolism.bsky.social www.sciencedirect.com/science/arti...
sciencedirect.com
Can we talk? The cryptic communications of hepatic stellate cells in lipid metabolism
The contributions of signals generated by hepatic stellate cells that regulate hepatocyte lipid and glucose homeostasis are largely unexplored. The ar…
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 30/03/2025
Exciting!!! Many Congratulations Hana👏👏👏
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 30/03/2025
📢 For all DNA fiber enthusiasts! 🟥🟩 We are thrilled to announce the release of our long-awaited AI-based workflow for the automated and quantitative analysis of DNA fibers. It's an exciting step forward—check it out on bioRxiv! lnkd.in/dQWUPtsP
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bioRxivpreprint @biorxivpreprint.bsky.social · 17/03/2025
PAF15-PCNA assembly exhaustion governs lagging strand replication and replisome integrity www.biorxiv.org/content/10.1101/202…
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Kumar Somyajit & Lab @ksomyajit.bsky.social · 20/03/2025
Cannot thank enough the collaborative spirit within the lab and with Jens Andersen,@jespergrud.bsky.social, Jonathan Brewer, @ravnskjaer-lab.bsky.social, Ole Jensen, @hanasedlackova.bsky.social labs. Huge thanks to the @lundbeckfonden.bsky.social, @erc.europa.eu, @cancer.dk for supporting our work.
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