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Hana Polasek-Sedlackova

@hanasedlackova.bsky.social
365 followers 311 following 57 posts

Group leader at the Institute of Biophysics, Czech Academy of Sciences | Czech Science Foundation Junior Star fellow | ERA & EMBO IG fellow | Deciphering DNA replication & genome integrity in normal & cancer development.

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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 06/08/2026
📢 We are looking for a PhD student to join our lab! Explore how DNA replication is regulated during development and disease using quantitative cell biology, advanced microscopy, CRISPR engineering, and AI tools. 👉 Full details: www.ibp.cz/en/for-publi... Thank you for sharing! 🔬
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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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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 06/01/2026
🚀 Qlife Winter School 2026: Quantitative Approaches to DNA Damage and Repair! Hands-on workshops for Master's, PhD, postdocs & junior scientists. 🗓 Apply by Jan 19, 2026! #QlifeWinterSchool #QuantitativeBiology #LifeScienceTraining
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Lopes_Lab @lopeslab.bsky.social · 19/12/2025
Thrilled to share our latest work - now available in full in Nature Communications - led in my lab by @vcherdy.bsky.social, with key collaborative contributions from @nitikataneja.bsky.social . rdcu.be/eVrxX
rdcu.be
Nucleoplasmic Lamin A/C controls replication fork restart upon stress by modulating local H3K9me3 and ADP-ribosylation levels
Nature Communications - Replication fork plasticity upon genotoxic stress is modulated by nuclear architectural components by elusive mechanisms. Here the authors implicate Lamin A/C – best...
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Czech Academy of Sciences @czechacademy.bsky.social · 02/12/2025
Hana Polášek-Sedláčková @hanasedlackova.bsky.social from our Institute of Biophysics is one of 28 group leaders who just became @embo.org Young Investigators for the next four years. #LifeSciences www.avcr.cz/en/media/pre... Details ➡️ www.embo.org/press-releas...
The twenty-eight group leaders who have become EMBO Young Investigators for the next four years. Photo source: EMBO.
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 02/12/2025
Thrilled to be selected as one of the 28 EMBO Young Investigators for 2026! It is an incredible honor, and I am especially proud to be the second scientist from Czechia chosen since the programme began in 2001. Happy to join Tomas Pluskal in representing our country in the EMBO YIP.
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 14/11/2025
Truly delighted to host @agagambus.bsky.social next week in Brno for an IBP Guest Lecture! Her groundbreaking work and genuinely human approach to science have always been a great inspiration to me. Come and join us for her lecture at IBP 👇
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 28/10/2025
📢 Excited to share that our study has just been published in Nature Communications! We uncover how CRL4-DCAF12 regulates the cellular levels of MCMBP, a chaperone essential for assembling nascent MCM2-7 complexes, to ensure accurate and error-free genome duplication.
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altmeyerlab @altmeyerlab.bsky.social · 02/10/2025
A comprehensive genetic catalog of human double-strand break repair | Science www.science.org/doi/10.1126/...
science.org
A comprehensive genetic catalog of human double-strand break repair
The analysis of DNA sequence outcomes provides molecular insights into double-strand break (DSB) repair mechanisms. Using parallel in-pool profiling of Cas9-induced insertions and deletions (indels) w...
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dimitristypas.bsky.social @dimitristypas.bsky.social · 12/08/2025
@natsmb.nature.com has published three pieces on scientists returning to their country of origin after working abroad. www.nature.com/nsmb/article... Two more will come out. The most recent one by @hanasedlackova.bsky.social hits home for me, a very interesting read. www.nature.com/articles/s41...
nature.com
Returning home: there and back again in Czechia - Nature Structural & Molecular Biology
Returning to Central Europe was appealing and challenging. Here, I reflect on my part in rebuilding a research career in Czechia and fostering a collaborative scientific community across the region.
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Nature Structural & Molecular Biology @natsmb.nature.com · 08/08/2025
ICYMI: New online: Returning home: there and back again in Czechia
go.nature.com
Returning home: there and back again in Czechia
Nature Structural & Molecular Biology, Published online: 07 August 2025; doi:10.1038/s41594-025-01642-1Returning to Central Europe was appealing and challenging. Here, I reflect on my part in rebuilding a research career in Czechia and fostering a collaborative scientific community across the region.
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 07/08/2025
📢 Excited to share my World View article, just published in @NatureSMB, where I reflect on returning to Czechia and building research group grounded in collaboration🤝, resilience and curiosity💡. www.nature.com/articles/s41...
nature.com
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Journal of Cell Biology @jcb.org · 04/08/2025
🧑‍🔬🎙️ When you publish with JCB, you can reach more of your community by submitting a short video! Want to promote your research in your own voice? 🎦 See our guidelines: rupress.org/jcb/pages/vi... ▶️ Watch video summaries from our authors: www.youtube.com/@JCellBiol
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Cahir O'Kane @cahirokane.bsky.social · 23/07/2025
Another reason to consider HaloTag as an alternative to GFP for tagging
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Eva Petermann @petermannlab.bsky.social · 23/07/2025
We're very proud that our recent PhD graduate (and now postdoc) Rosie Wilkins' study on RNase H2 overexpression in human cells has been published in Oncogene. www.nature.com/articles/s41...
nature.com
Human RNase H2 upregulation counteracts oncogene- and chemotherapy-induced replication stress - Oncogene
Oncogene - Human RNase H2 upregulation counteracts oncogene- and chemotherapy-induced replication stress
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Journal of Cell Biology @jcb.org · 23/07/2025
A Biotin-HaloTag ligand enables efficient affinity capture of protein variants from live cells. New tools developed by Anoop Kumar Yadav, Abhijeet Jadhav, Hana Polasek-Sedlackova @hanasedlackova.bsky.social and colleagues: rupress.org/jcb/article/... #Technology #Chromatin #epigenetics #CellCycle
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Francesca Mattiroli @fmattiroli.bsky.social · 22/07/2025
Thank you, Melina, for the interview!
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 23/07/2025
📢 For all HaloTag lovers💙💚💛❤️💜🩶 we are excited to share that our work, in which we developed a new biotin-HaloTag ligand, is now published in @jcb.org! Full link here: rupress.org/jcb/article-...
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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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Rockefeller University Press @rupress.org · 16/07/2025
In @jcb.org, the @hanasedlackova.bsky.social lab presents 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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Aga Gambus @agagambus.bsky.social · 10/07/2025
It is finally out 👍😀. Great job of the team (mostly absent from Bsky) and @m-saponaro.bsky.social CDK-driven phosphorylation of TRAIP is essential for mitotic replisome disassembly and MiDAS url: academic.oup.com/nar/article/...
academic.oup.com
CDK-driven phosphorylation of TRAIP is essential for mitotic replisome disassembly and MiDAS
Abstract. Disassembly of the replication machinery (replisome) from chromatin is an active process driven by two ubiquitin ligases Cul2LRR1 and TRAIP, whic
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Francesca Mattiroli @fmattiroli.bsky.social · 10/07/2025
Apply to our PhD program!!
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Kai Johnsson @kjohnsson.bsky.social · 03/07/2025
Finally out in Nature Chem Bio: SNAP-tag2 for faster and brighter protein labeling www.nature.com/articles/s41... Thank you Steffi and Veselin.
nature.com
SNAP-tag2 for faster and brighter protein labeling - Nature Chemical Biology
SNAP-tag is a widespread tool for labeling protein for bioimaging. Now, Kühn et al. report SNAP-tag2 with increased labeling kinetics and brightness, which translates into a better performance in live...
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Communications Biology @commsbio.nature.com · 27/06/2025
This review discusses the cellular pathways mediating Targeted Protein Degradation approaches and points to some gaps in our understanding of the biology of novel therapeutic tools such as PROTACs. doi.org/10.1038/s420...
doi.org
Cellular parameters shaping pathways of targeted protein degradation - Communications Biology
This review discusses the cellular pathways mediating Targeted Protein Degradation approaches and points to some gaps in our understanding of the biology of novel therapeutic tools such as PROTACs.
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dimitristypas.bsky.social @dimitristypas.bsky.social · 19/06/2025
This editorial details why we think it's a good idea to standarise reporting of microscopy data and what we are doing towards that. I also feel that it is both important and a step towards helping the community. www.nature.com/articles/s41...
nature.com
Reporting light microscopy data in our pages - Nature Structural & Molecular Biology
We outline a pilot starting at several Nature Portfolio journals aimed at improving and standardizing the reporting of light and fluorescence microscopy experiments.
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Alessandro Costa @costalaboratory.bsky.social · 20/06/2025
Postdoc positions open in my lab (Francis Crick Institute) to study 1. initiation of DNA replication. 2. chromatin replication/epigenetic inheritance. Great for biochemists, biophysicists and cryo-EM/cryo-tomography scientists. Deadline 3 August 2025. crick.wd3.myworkdayjobs.com/External/job...
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kstewartmorgan.bsky.social @kstewartmorgan.bsky.social · 17/06/2025
If you are interested in working on chromatin and oogenesis in the mouse in beautiful Copenhagen, we are recruiting a postdoc! jobportal.ku.dk/videnskabeli... Please share!
app.beetween.com
Beetween
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Čajánek lab @cajaneklab.bsky.social · 10/06/2025
📣Check out our recent review (written with Martina Huranova lab) on converging mechanisms controlling #cilia #dynamics during #cell #cycle, #cell #signaling, and cross-talk of ciliary modules. rdcu.be/epVDc
rdcu.be
Cilia at the crossroad: convergence of regulatory mechanisms to govern cilia dynamics during cell signaling and the cell cycle
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dimitristypas.bsky.social @dimitristypas.bsky.social · 10/06/2025
So excited to share that we @natsmb.nature.com are hiring a new editor! If you are interested about working with an intelligent, compassionate and funny team helping scientists publish great research, please consider applying. Deadline June 20th. springernature.wd3.myworkdayjobs.com/SpringerNatu...
springernature.wd3.myworkdayjobs.com
Associate or Senior Editor (Nature Structural & Molecular Biology and Nature Communications)
Job Title: Associate or Senior Editor (Nature Structural & Molecular Biology and Nature Communications) Location: New York, Shanghai, Beijing, Madrid or Milan Closing date: June 20th About Springe...
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GIIN @genomeiinetwork.bsky.social · 28/05/2025
Next Tuesday's webinar will feature @agagambus.bsky.social and @chowdhurylab.bsky.social. Join us on June 3rd at 5PM Rome / 11AM NYC for a lively discussion on DNA replication and repair! Zoom link: uniroma1.zoom.us/j/95149984403 Become part of our community: docs.google.com/forms/d/e/1F...
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Simon Hammann @simonhammann.bsky.social · 02/06/2025
Oh wow. Starting grant 0-10 years post PhD from 2027, Consolidator 5-15
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Andreas Panagopoulos @apanagopoulos.bsky.social · 21/05/2025
Lastly, many thanks to Sarah Aitken (@s-j-aitken.bsky.social) and Emma Reilly for writing a great News & Views article that summarizes our findings and puts them into perspective. You can find it here: doi.org/10.1038/d415...
doi.org
Under the microscope: DNA damage tracked through cell generations
An ingenious technique reveals how stressed cells divide to produce progeny that have different traits — a phenomenon that can initiate cancer.
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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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Lopes_Lab @lopeslab.bsky.social · 07/05/2025
Exciting PhD project available in our lab (time sensitive)! 👇
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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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Journal of Cell Science @jcellsci.bsky.social · 02/05/2025
Also in Issue 8: - Research Highlights on tracking leukocytes, trap formation and pluripotency transitions - Interview with @hanasedlackova.bsky.social - In memoriam – Angelika Noegel - Epithelial cell extrusion at a glance journals.biologists.com/jcs/issue/13...
JCS poster - 'Epithelial cell extrusion at a glance' Aline Grata, Romain Levayer
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Chromatin organization and function @pecinka-grp.bsky.social · 22/04/2025
We are looking for a motivated postdoc to study genomic imprinting in barley. @apecinka.bsky.social @beata-strej.bsky.social
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 22/04/2025
Truly honored that my career path and laboratory were featured in the 'Cell Scientist to Watch' interview series. A huge thank you to Sara Morais da Silva and @jcellsci.bsky.social for this wonderful opportunity 🙏
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Valentin Flury @flurylab.bsky.social · 31/03/2025
(jobs.ie-freiburg.mpg.de/jobposting/4...)
jobs.ie-freiburg.mpg.de
Postdoctoral Position (m/f/div)
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Pavel Moudrý @3reak.bsky.social · 30/03/2025
Our new preprint is now on bioRxiv! 📄 We introduce qAID, an AI-based workflow for automated analysis of DNA replication dynamics. Glad to have contributed a small part to this study.
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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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Kumar Somyajit & Lab @ksomyajit.bsky.social · 20/03/2025
Thrilled to share our lab's first preprint, led by an exceptional PhD student Gita Chhetri and with the support of wonderful collaborators, we find that replisome function is rate-limited by strand-specific PCNA dynamics. Hope you will enjoy reading. www.biorxiv.org/content/10.1... Brief teaser:
biorxiv.org
PAF15-PCNA assembly exhaustion governs lagging strand replication and replisome integrity
Genome replication in eukaryotic cells is surveyed by the S-phase checkpoint, which orchestrates sequential replication origin activation to avoid exhaustion of hitherto poorly defined rate-limiting r...
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altmeyerlab @altmeyerlab.bsky.social · 18/03/2025
How are chromosome breaks repaired and how is their repair influenced and facilitated by nuclear and genome dynamics? Fantastic initiative and collaboration with @karimmekhail.bsky.social, @chiololab.bsky.social, and @lablegube.bsky.social. @natrevmcb.bsky.social Link to article: rdcu.be/edViW
rdcu.be
Nuclear and genome dynamics underlying DNA double-strand break repair
Nature Reviews Molecular Cell Biology - Changes in nuclear and genome organization promote the repair of DNA double-strand breaks and genome stability. Processes that are involved include the...
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Lopes_Lab @lopeslab.bsky.social · 17/03/2025
Exciting seminar series from Genome integrity italian Network (GiiN), chaired by myself and Raffaella Di Micco! Short talks (2x30’), at convenient time for EU/USA attendees. Big shots and raising stars in an expanding field. See flyers + link to receive email alerts. Please repost to your network!👇
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Hana Polasek-Sedlackova @hanasedlackova.bsky.social · 19/02/2025
Had an absolutely fantastic time in Essen! Thank you so much, Dominik Boos, for kind invitation and the inspiring discussions that sparked many ideas💡Hemmo Meyer, Michael Ehrmann, Boris Pfander, Simon Popsel, @hellerschmiedlab.bsky.social & students & postdocs 💚 I appreciated every moment 🙏
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CRC 1430 @crc1430.bsky.social · 17/02/2025
Join us tomorrow, February 18, for an exciting @crc1430.bsky.social seminar at @unidue.bsky.social! We’re happy to welcome @hanasedlackova.bsky.social, who will present on 'Molecular Homeostasis of DNA Replication Origins in Human Cells.' #DNAreplication #ResearchCollaboration
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Romain Koszul @rkoszul.bsky.social · 07/02/2025
Our latest work: how can compartmentalization emerge in a eukaryotic genome lacking canonical heterochromatin? By investigating bacterial genomes put in yeast, we show that the presence or absence of transcription is sufficient! #chromatin #3Dgenome #generegulation www.science.org/doi/10.1126/... 👇
science.org
Sequence-dependent activity and compartmentalization of foreign DNA in a eukaryotic nucleus
In eukaryotes, DNA-associated protein complexes coevolve with genomic sequences to orchestrate chromatin folding. We investigate the relationship between DNA sequence and the spontaneous loading and a...
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Sarah Lambert's Lab @lambertsarahlab.bsky.social · 05/02/2025
Dead line is approaching. Have a look on the prg.
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Sarah Lambert's Lab @lambertsarahlab.bsky.social · 04/01/2025
Please RT. Join the sixth edition of our Training Unit @institut_curie international course on Genome Instability & Human Disease open to master students, PhDs and researchers! Amazing program. Registration dead line 2nd March 2025 at training.institut-curie.org/courses/geno...
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