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Glennis Logsdon

@glennislogsdon.bsky.social
654 followers 62 following 8 posts

Assistant Professor of Genetics and Core Member of the Epigenetics Institute at UPenn | T2T, HPRC, and HGSVC member | Loves genomics, epigenomics, and synthetic biology | logsdonlab.com

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Reposted by Glennis Logsdon
Bungo Akiyoshi @bungoakiyoshi.bsky.social · 22/12/2025
The discovery of the first kinetochore proteins (CENP-A, CENP-B, CENP-C) was reported by Bill Earnshaw and Naomi Rothfield in 1985 in Chromosoma. Forty years later, Chromosoma/Chromosome Research has published a special issue (most articles are open access) link.springer.com/collections/...
link.springer.com
40 years of CENP-A
In 1985, Earnshaw and Rothfield published in Chromosoma a landmark discovery of the centromere-specific protein CENP-A. Subsequent research has shown that ...
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Reposted by Glennis Logsdon
bioRxiv Genomics @biorxiv-genomic.bsky.social · 18/12/2025
Human acrocentric chromosome short arm de novo mutation and recombination www.biorxiv.org/content/10.64898/20…
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Thanks, Kaia! I hope all is well with you!
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Hats off to our two co-first authors, Shenghan Gao and @koisland.bsky.social for leading the work, and many thanks to our collaborators, Shu-Cheng Chuang, Mark Loftus, PingHsun Hsieh, Miriam Konkel, Mario Ventura, and others, for making this work possible!
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Our work reveals an "arms race" between centromeric sequences and proteins, with frequent mutations within the site of the kinetochore that lead to changes in genetic and epigenetic landscapes and, ultimately, rapid evolution of these critically important regions.
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Finally, comparison with 6,230 centromeres assembled by the HPRC and a 4-generation pedigree (8,340 centromeres total) reveals that centromeres vary in mutation rate by >50-fold. Surprisingly, the kinetochore site is often the most rapidly mutating region in the centromere.
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Additionally, we show that some centromeres have evidence of introgression from archaic hominins, with Neanderthal and Denisovan DNA enriched in a subset of centromeres from chromosomes 10 and 21.
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
We find that the location of the kinetochore depends on the underlying sequence and structure of the centromere, with some chromosomes having a single kinetochore location and others having multiple, distinct locations that stratify by haplotype structure.
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Glennis Logsdon @glennislogsdon.bsky.social · 16/12/2025
Absolutely thrilled to share the latest work from my lab focused on the variation and evolution of human centromeres among global populations! We assembled 2,110 human centromeres, identifying 226 new major haplotypes and 1,870 α-satellite HOR variants. www.biorxiv.org/content/10.6...
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Reposted by Glennis Logsdon
UC Santa Cruz Genomics Institute @ucscgenomics.bsky.social · 01/08/2025
It's exciting to see the continuing legacy of T2T sequencing methods being discussed on @scifri.bsky.social ! 🧬 Complete genomes are helping us understand more and more about genetic function and diversity in areas of our DNA that were unreadable just a few years ago.
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Reposted by Glennis Logsdon
Christine Beck @christinebeck.bsky.social · 01/08/2025
This was both fun and terrifying to tape! Awesome to talk with @glennislogsdon.bsky.social and @aphillippy.bsky.social about our sequencing data / paper, the improvements to large-scale sequencing projects, and what this means for our understanding of our DNA!
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Reposted by Glennis Logsdon
Adam Phillippy @aphillippy.bsky.social · 01/08/2025
Complete genomes alert! @glennislogsdon.bsky.social, @christinebeck.bsky.social, and I were on @scifri.bsky.social today talking about "Complex genetic variation in nearly complete human genomes" 📄 www.nature.com/articles/s41... 📻 www.sciencefriday.com/segments/65-...
sciencefriday.com
65 Genomes Expand Our Picture Of Human Genetics
Researchers closely examined the genomes of 65 individuals to paint a more complex, and more complete, picture of human genetic diversity.
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Reposted by Glennis Logsdon
Simon Fisher @profsimonfisher.bsky.social · 23/07/2025
Telomere-to-telomere DNA sequencing is set to transform the field of human genetics in coming years. For a flavour of what's coming, see this exciting work on nearly complete genomes of 65 individuals from diverse populations, out today in @nature.com by @glennislogsdon.bsky.social & colleagues. 👇🧬🧪
nature.com
Complex genetic variation in nearly complete human genomes - Nature
Using sequencing and haplotype-resolved assembly of 65 diverse human genomes, complex regions including the major histocompatibility complex and centromeres are analysed.
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Reposted by Glennis Logsdon
Yuichi Shiraishi @friend1ws.bsky.social · 30/07/2025
🚨New preprint out! 🧬Short reads can now decode centromeres. 🌍We reveal population-scale centromere haplogroups and their links to disease. biorxiv.org/content/10.1... (1/n)
biorxiv.org
Rare k-mers reveal centromere haplogroups underlying human diversity and cancer translocations
Centromeres are among the most diverse and dynamically evolving regions of the human genome and are commonly affected in various human cancers. However, organized into highly repetitive α-satellite hi...
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Reposted by Glennis Logsdon
F. Kumara Mastrorosa @fkma.bsky.social · 18/07/2025
We updated our preprint describing chr21 centromere genetics/epigenetics in families with Down syndrome and general population! We found transgenerational methylation changes in a subset of families and that centromere size asymmetry is exclusive to T21! www.biorxiv.org/content/10.1...
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Reposted by Glennis Logsdon
Adam Phillippy @aphillippy.bsky.social · 22/04/2024
ModDotPlot preprint is now out! Winner of best poster at RECOMB 2023, it can generate either static or interactive dotplots in minutes using hierarchical modimizers. With @alexsweeten.bsky.social and @mikeschatz.bsky.social Preprint: www.biorxiv.org/content/10.1... Code: github.com/marbl/ModDot...
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Animated GIF - Find & Share on GIPHY
Discover & share this Animated GIF with everyone you know. GIPHY is how you search, share, discover, and create GIFs.
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Reposted by Glennis Logsdon
Vikram Paralkar @paralkarlab.bsky.social · 06/04/2024
Out in Nature from @glennislogsdon.bsky.social. Amazing work on human centromeres and their evolution! www.nature.com/articles/s41...
nature.com
The variation and evolution of complete human centromeres - Nature
A comparison of two complete sets of human centromeres reveals that the centromeres show at least a 4.1-fold increase in single-nucleotide variation compared with their unique flanks, and up to 3-fold...
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Reposted by Glennis Logsdon
Adam Phillippy @aphillippy.bsky.social · 18/03/2024
We demonstrate a single-platform solution for complete T2T genomes on the ONT PromethION: Duplex + Ultra-long + Pore-C, aka "TNT" 🧨 Expecting rapid improvements in the coming year. Congrats @sergek.bsky.social @zbao.bsky.social @awngs.bsky.social @awngs.bsky.social @khmiga.bsky.social et al.!
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Glennis Logsdon @glennislogsdon.bsky.social · 21/03/2024
Thank you for the warm welcome, @nucleosomepolice.bsky.social! So excited to be on this platform with amazing and inspiring scientists like yourself!
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