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Tadasu Nozaki

@tadasu443.bsky.social
138 followers 96 following 7 posts

Chromosome researcher at UMass Amherst #LiveCell #SingleMolecule #Meiosis #Chromatin #pairing scholar.google.com/citations?user=u…

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Reposted by Tadasu Nozaki
Harvard_MCB @harvardmcb.bsky.social · 30/09/2026
FishExplorer Opens New Window on How Brains Evolve Across Species 🔬 🧠 🧪🧬 #AcademicSky #higherEd www.mcb.harvard.edu/department/n... @engertlab.bsky.social @harvardbrainsci.bsky.social @embl.org @zuseinstitute.bsky.social @owenrandlett.bsky.social @naoshigeuchida.bsky.social @natcomms.nature.com
mcb.harvard.edu
FishExplorer Opens New Window on How Brains Evolve Across Species - Harvard University - Department of Molecular & Cellular Biology
How much of the way a brain works reflects fundamental principles shared across species—and how much has been shaped by the particular environments and behaviors a species has […]
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Masahiro Kanai @masakanai.bsky.social · 30/09/2026
Our single-nucleus immune multiome atlas is now out in @nature.com! 🧬 10M PBMCs from 1,108 @finngen.bsky.social donors recruited by Finnish Blood Service, profiled at @broadinstitute.org with chromatin accessibility and gene expression in the same nuclei, to trace how disease variants act 🧵👇
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Tadasu Nozaki @tadasu443.bsky.social · 29/09/2026
Meiotic chormosomal pairing in mouse by live-cell imaging. Very interesting. www.nature.com/articles/s41...
nature.com
Stepwise pairing and fast transition regulated by recombination drive meiotic chromosome interactions - Nature Communications
Chromosomes must pair accurately to form healthy reproductive cells. Here, the authors show in mice that this pairing occurs in defined steps controlled by DNA recombination and chromosome-joining str...
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Reposted by Tadasu Nozaki
Corentin Claeys Bouuaert @ccb-lab.bsky.social · 21/08/2026
Happy to see this paper published in Nucleic Acids Research! academic.oup.com/nar/article/...
academic.oup.com
Insights into the recruitment of the H3K4me3 reader Spp1 by the meiotic double-strand break protein Mer2
Abstract. The formation of DNA double-strand breaks (DSBs) by Spo11 is tied to the loop-axis organization of meiotic chromosomes. Before DSB formation, chr
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Bungo Akiyoshi @bungoakiyoshi.bsky.social · 14/09/2026
New preprint from the lab. We developed the first protein depletion method in Diplonema papillatum!
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RNA & Ribosome Homeostasis Lab @École Polytechnique / @CNRS @aribio.bsky.social · 15/09/2026
PAPER ALERT!!! For over 20 years, circular pre-rRNA intermediates were thought to be a specific and universal requirement for archaeal ribosome biogenesis. doi.org/10.1261/rna.... #Archaea #Ribosome #RNAProcessing #Archaeasky #RNAsky
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Kazuhiro Maeshima @kazu-maeshima.bsky.social · 15/09/2026
How are mitotic chromosomes built? Our Review @cp-trendsgenetics.bsky.social revisits the classical chromosome scaffold model and connects it to condensins, topoIIα, and physical forces. We propose interphase chromatin domains as “building blocks”🧩of chromosomes: authors.elsevier.com/a/1nmwrcQbJI...
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Soni Lacefield @lacefieldlab.bsky.social · 23/02/2026
I am so honored to give the Ira Herskowitz Award lecture at #Yeast26! Please join us, it’s going to be a fantastic meeting! @genetics-gsa.bsky.social
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Aurele Piazza @aurelepiazza.bsky.social · 06/01/2026
SMC and recombination enthusiasts: we updated our work describing the loop extrusion properties of budding yeast condensin and its function in biasing donor usage for mating-type switching. Lots of cool new data, check it out! www.biorxiv.org/content/10.1...
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Max Haase @maxhaase.bsky.social · 18/02/2026
Our paper is now out in Nature: “Ancient co-option of LTR retrotransposons as yeast centromeres” www.nature.com/articles/s41... A short thread on how retrotransposons helped give rise to yeast point centromeres. 1/14
nature.com
Ancient co-option of LTR retrotransposons as yeast centromeres - Nature
Evolutionarily related ‘proto-point’ centromeres providing resolution to the evolutionary origins of point centromeres are identified in yeast, and comparison shows they evolved in an ancestor with re...
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Karolin Luger @nucleosomepolice.bsky.social · 02/02/2026
Unquestionably the result of combined effort from all current and former lab members, support from colleagues @CSU and @CU, and support from @hhmi-science.bsky.social and NIH over decades. A heartfelt 🙏 to my nominators and of course @vilcekfoundation.bsky.social. vilcek.org/prizes/prize...
vilcek.org
Karolin Luger - Vilcek Foundation
Karolin Luger's research led to the capture of a high resolution image of chromatin, resulting in the development of innovative drug treatments for diseases like cancer.
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Kazuhiro Maeshima @kazu-maeshima.bsky.social · 28/12/2025
So proud of my former PhD student ‪@tadasu443.bsky.social‬ for starting his own lab at @umassamherst.bsky.social ! Wishing him all the best in this exciting new chapter. Looking forward to his future discoveries! 🎉🧬
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Gerlich Lab @gerlichlab.bsky.social · 05/12/2025
Excited to share our latest fully in-house paper! 🎉 We show how cohesin integrates loop extrusion with sister tethering to guide the homology search during DNA repair. Huge congratulations to all authors, and to @fedeteloni.bsky.social for leading this work 👏 We’re excited to see his next steps!
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Federico Teloni @fedeteloni.bsky.social · 04/12/2025
I am happy to share that my postdoctoral work in the @gerlichlab.bsky.social at @imbavienna.bsky.social is finally out 🎉! Our study reveals how cohesin guides focused and accurate homology search. Read more 👉 www.science.org/doi/10.1126/... Follow along for key insights and updates! 🧵
science.org
Cohesin guides homology search during DNA repair using loops and sister chromatid linkages
Accurate repair of DNA double-strand breaks (DSBs) is essential for genome stability, and defective repair underlies diseases such as cancer. Homologous recombination uses an intact homologous sequenc...
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Alberto Marin @albertomarin.bsky.social · 04/12/2025
Thrilled to share that my postdoc research is published today in @science.org! We found that DNA repair uses cohesin complexes to build new chromatin loops that guide the homology search and boost accurate repair! 1/n www.science.org/doi/10.1126/...
science.org
Cohesin drives chromatin scanning during the RAD51-mediated homology search
Cohesin folds genomes into chromatin loops, the roles of which are under debate. We found that double-strand breaks (DSBs) induce de novo formation of chromatin loops in human cells, with the loop bas...
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Ian Henderson @hendersi.bsky.social · 21/11/2025
Chromosome Dynamics 2026 @ Awaji Japan www.fbs.osaka-u.ac.jp/labs/fukagaw...
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Tadasu Nozaki @tadasu443.bsky.social · 13/11/2025
I launched my lab at UMass Amherst this fall. We study the mechanisms of meiotic homolog pairing using advanced live‑cell and super‑resolution imaging. Currently in budding yeast, with plans to expand to other eukaryotes. #Chromosome #Meiosis #Mitosis www.umass.edu/biology/abou...
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Valérie Borde @lab-borde.bsky.social · 03/08/2025
www.biorxiv.org/content/10.1...
biorxiv.org
RPA directly stimulates Mer3/HFM1 helicase processivity to ensure normal crossover formation in meiosis
Meiotic crossover formation is critical for generating viable gametes and enhancing genetic diversity. The helicase Mer3 (HFM1 in humans) is a highly conserved factor essential for promoting crossover...
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Reposted by Tadasu Nozaki
Anton Goloborodko @golobor.bsky.social · 15/07/2025
We found a new asymmetry in the large-scale chromosome structure: sister chromatids are systematically shifted by hundreds of kb in the 5′→3′ direction of their inherited strands! The work was led by Flavia Corsi, in close collaboration with the Daniel Gerlich lab. www.biorxiv.org/content/10.1... 1/
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Bungo Akiyoshi @bungoakiyoshi.bsky.social · 30/05/2025
Dynamic chromosomes
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Yeast Journal @yeast-journal.bsky.social · 22/05/2025
In the latest #Yeast research article of the series #FantasticYeasts, Pei-Jie Han, Feng-Yan Bai & team describe a new yeast species isolated from a Chinese forest: Saccharomycopsis yichangensis, that can prey on Saccharomyces cerevisiae and other yeasts 😲 onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Saccharomycopsis yichangensis sp. nov., a Novel Predacious Yeast Species Isolated From Soil
Saccharomycopsis yichangensis sp. nov. occurs in soil from a subtropical forest in central China. This novel species is homothallic and produces asci containing four spheroidal ascospores, which can ...
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Petr Cejka @cejkalab.bsky.social · 05/05/2025
Please see our latest paper on the role of EXO1 in meiosis: "EXO1 promotes the meiotic MLH1-MLH3 endonuclease through conserved interactions with MLH1, MSH4 and DNA". Congratulations to both first authors, Megha Roy and Aurore Sanchez and thanks to all our collaborators!
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Kazuhiro Maeshima @kazu-maeshima.bsky.social · 25/04/2025
🧬My retrospective chromatin review is out @Proc Jpn Acad: doi.org/10.2183/pjab... The textbook view of #chromatin as 30-nm fibers is fading. A new paradigm: chromatin forms #liquid-like domains—locally dynamic, yet globally stable at the chromosome level (viscoelastic)—supporting genome function. ✨
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Bungo Akiyoshi @bungoakiyoshi.bsky.social · 27/04/2025
A blutorial on my latest manuscript, which will appear as a Hypothesis article in Journal of Cell Science (no embargo requested as far as I am aware). If you are interested in mitosis/meiosis/kinetochores/evolution/deep phylogeny, please read it (1/n)
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NealeLab @labneale.bsky.social · 22/04/2025
New open access review from Jon Harper and George Brown—charting the evolutionary history of Spo11 and its regulation. portlandpress.com/biochemsoctr... #meiosis4eva
portlandpress.com
Spo11: from topoisomerase VI to meiotic recombination initiator
Meiotic recombination is required to break up gene linkage and facilitate faithful chromosome segregation during gamete formation. By inducing DNA double-strand breaks, Spo11, a protein that is conser...
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Reposted by Tadasu Nozaki
Wataru Kobayashi @wkobayashi.bsky.social · 22/04/2025
I’m pleased to announce that I have now officially started my research group at the University of Dundee, UK. My laboratory focus on how transcription factors orchestrate epigenetic reprogramming in mammalian embryos.
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Job Dekker @jobdekker.bsky.social · 11/04/2025
Excited to share our latest work on how cells fold their genomes, and build mitotic chromosomes! Out in Science today! Lots of interesting results and proposals for those interested in loop extrusion, and chromosomes! With @golobor.bsky.social, Leonid Mirny, Bill Earnshaw labs. See thread below:
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Harvard_MCB @harvardmcb.bsky.social · 31/03/2025
James M. Berger will Deliver the Paul Doty Lecture on April 10 www.mcb.harvard.edu/department/n... @rachellegaudet.bsky.social @dulaclab.bsky.social @neurovenki.bsky.social @naoshigeuchida.bsky.social @rivaselenarivas.bsky.social @fleshball.bsky.social @jeeyunc.bsky.social @hekstralab.bsky.social
mcb.harvard.edu
James Berger will Deliver the Paul Doty Lecture on April 10 - Harvard University - Department of Molecular & Cellular Biology
This year, James M Berger, of Johns Hopkins University School of Medicine will return to Harvard to present the Doty Lecture, “Still Unscrambling the Puzzle of Biological Machines: […]
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Reposted by Tadasu Nozaki
Kazuhiro Maeshima @kazu-maeshima.bsky.social · 29/03/2025
Our new paper is out@ScienceAdvances👇 www.science.org/doi/10.1126/... 🧬Our Repli-Histo labeling marks nucleosomes in euchromatin and heterochromatin in live human cells. 🔍 @katsuminami.bsky.social et al. have developed a chromatin behavior atlas within the nucleus. 1/2
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Petr Cejka @cejkalab.bsky.social · 25/03/2025
Check out our review on DNA end resection! With Raphael Ceccaldi, www.nature.com/articles/s41...
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Iain Cheeseman @iaincheeseman.bsky.social · 25/03/2025
Countdown to an epic new pre-print. Mitochondria are cells within our cells. They need the same core activities - replication, transcription, translation. How do cells enable these diverse activities in both compartments? We uncover an unexpected + broad strategy with ancient origins. Stay tuned!
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Ellenberg Lab @ellenberglab.bsky.social · 24/03/2025
Our new findings on how chromosomes get ready for cell division are now published in @cellpress.bsky.social! Congratulations, Kai, @andibrunner.bsky.social and everyone else involved! 🤩 www.sciencedirect.com/science/arti...
sciencedirect.com
Nanoscale DNA tracing reveals the self-organization mechanism of mitotic chromosomes
How genomic DNA is folded during cell division to form the characteristic rod-shaped mitotic chromosomes essential for faithful genome inheritance is …
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Bungo Akiyoshi @bungoakiyoshi.bsky.social · 24/03/2025
There are ~180 chromosomes in this diplonemid, which organize into two rings during mitosis. Chromosomal passenger complex proteins localize in between the rings. Indirect evidence suggests that the cell is in metaphase but the two rings are separated by up to 1 µm. How are they connected?
Fluorescence microscopy images showing a diplonema cell
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Bungo Akiyoshi @bungoakiyoshi.bsky.social · 24/03/2025
I am happy to share a preprint on the marine plankton project I started one year ago (thanks to Julius and Drahomira's help) www.biorxiv.org/content/10.1...
biorxiv.org
Discovery of unique mitotic mechanisms in Paradiplonema papillatum
Diplonemids are highly diverse and abundant marine plankton with significant ecological importance. However, little is known about their biology, even in the model diplonemid Paradiplonema papillatum ...
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Mitosis Lab @mitosislab.bsky.social · 17/03/2025
Happy that Jon Chen @jonchenjk.bsky.social's cryo-ET and confocal study of RPE-1 chromatin in situ is online www.embopress.org/doi/full/10.1038/s44318-025-00407-2 Congrats also to coauthors Tingsheng Liu, @shujuncai.bsky.social, Cai Tong Ng, Jian Shi and collaborators Weimei Ruan Uttam Surana.
Cryo-ET visualization of chromatin at the nucleosome level in RPE-1 cells arrested in G1 phase and metaphase.Cryotomograms of a metaphase RPE-1 cell.3-D class averages of mononucleosomes and ordered stacked dinucleosomes in G1 and metaphase.
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Stowers Institute @stowersinstitute.bsky.social · 18/03/2025
NEW #research from the Zanders Lab & Halfmann Lab in @plos.org shows how selfish genes “cheat” inheritance to ensure they’re passed to the next generation. Learn how the discovery could help scientists better understand #fertility & #neurodegeneration. Learn more: bit.ly/41uOr8V WATCH: (part 1/3)
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semeigazin.bsky.social @semeigazin.bsky.social · 12/11/2024
We are finally published in HCB journal! My sincere gratitude to all co-authors who made it possible, and separate thanks to my supervisor, Dr. Kazuhiro Maeshima, for his strong initiative to reporting our important findings! PDF link: rdcu.be/dHXJF
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Greg Copenhaver @copenhaverlab.bsky.social · 07/03/2025
Our (@jeffsekelsky.bsky.social, Corbin Jones, & me) #Meiosis, Recombination & Evolution of Sex class @uncchapelhill.bsky.social loved talking w/ Bengt Hansson from @lund-university.bsky.social about his lab's #G3journal paper on bird male-biased CO patterning + new work: doi.org/10.1093/g3jo...
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Rosana Collepardo @rcollepardo.bsky.social · 07/03/2025
In this wonderful collaboration with K Maeshima and M Shimazoe we show that H1 in living cells acts as a liquid-like glue not a driver of stiff zigzag fibers 🔥🔥🔥 Each H1 bridges multiple nucleosomes and exchanges nucleosomes frequently: boosting both compaction and dynamical behaviour of chromatin
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Kazuhiro Maeshima @kazu-maeshima.bsky.social · 07/03/2025
Our new preprint is out@bioRxiv: www.biorxiv.org/content/10.1... @masaashimazoe.bsky.social et al. reveal that linker histone H1 acts as a liquid-like glue to organize chromatin in living cells. 🎉 Fantastic collab with @rcollepardo.bsky.social @janhuemar.bsky.social and others—huge thanks! 🙌 1/
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Mitosis Lab @mitosislab.bsky.social · 04/03/2025
Zhi Yang Tan & @shujuncai.bsky.social's comparative study of G0 (quiescent) and interphase fission yeast cells is out in @jcellsci.bsky.social doi.org/10.1242/jcs.263654. This study combines multiple cell-biological analyses with in situ cryo-ET. Raw data: www.ebi.ac.uk/empiar/EMPIAR-10339
DIC and cryo-ET images of G1 and G0 fission yeast cells.
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Joe Peters Lab @joepeterslab.bsky.social · 06/03/2025
Telomeric transposons are pervasive in linear bacterial genomes | Science www.science.org/doi/10.1126/...
science.org
Telomeric transposons are pervasive in linear bacterial genomes
Eukaryotes have linear DNA and their telomeres are hotspots for transposons, which in some cases took over telomere maintenance. Here we identify several families of independently evolved telomeric tr...
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Duilio Silva @selfishdna.bsky.social · 03/03/2025
New Akera's lab paper! Congrats @takashiakeralab.bsky.social and Eddie!
nature.com
Meiosis-specific distal cohesion site decoupled from the kinetochore - Nature Communications
In general, the kinetochore position and the sister-chromatid cohesion site are spatially linked. Here, the authors find a meiosis-specific distal cohesion site decoupled from the kinetochore in Perom...
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Romain Koszul @rkoszul.bsky.social · 03/03/2025
Are you curious about eukaryotic plasmids? PhD student Fabien Girard with Axel Cournac in the lab explore the positioning of plasmid 2u, one of these rare (known) episomes, in the budding yeast nucleus. The results were surprising. #plasmids #chromatin #3Dgenome www.embopress.org/doi/full/10....
embopress.org
Parasitic plasmids are anchored to inactive regions of eukaryotic chromosomes through a nucleosome signal | The EMBO Journal
imageimageThe naturally occurring S. cerevisiae 2µ plasmid is one of few documented cases of eukaryotic plasmids, undergoing equal distribution between mother and daughter cells during mitosis. Using ...
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Aurora Ruiz-Herrera @aruizherrera.bsky.social · 23/02/2025
🔖 New collaborative work! It has been fun to team up with Birgitte Regenberg’s group in University of Copenhagen to explore the biology of #circularDNA 👉Now in @naturecomms.bsky.social rdcu.be/eaQsp
rdcu.be
EccDNA atlas in male mice reveals features protecting genes against transcription-induced eccDNA formation
Nature Communications - Extrachromosomal circular DNA (eccDNA) can drive cancer and other age-related diseases. Here, Liang et al. present an atlas of eccDNA in mammals, and demonstrate that the...
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Nature @nature.com · 20/02/2025
An enzyme involved in meiosis can now be studied in detail go.nature.com/416Fnqt
go.nature.com
Key process in sex-cell formation can finally be studied in vitro
Activity of the purified SPO11 enzyme reconstituted in cell-free system.
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Rosana Collepardo @rcollepardo.bsky.social · 24/12/2024
Is chromatin ordered or disordered? It all depends on the linker DNA length. Check our latest work with Mike Rosen and Sy Redding. We explore how changes in linker DNA length (as small as 1 bp) fine-tune chromatin structure, between order and disorder, and the properties of chromatin droplets
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Aurele Piazza @aurelepiazza.bsky.social · 17/02/2025
How do cells prioritize molecular machines working on DNA? With which functional consequences? Here bs-less Yasmina Djeghmoum discovered and characterized transcription-recombination priority rules, and their role in promoting genome maintenance. 🧵 www.biorxiv.org/content/10.1...
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