Liyang Shi

@liyangshi.bsky.social

PhD student in Genomic Medicine at Kyoto & McGill joint program #epigenetics #centromere #TE

New issue alert👉https://cell.com/cell/current On the cover: The Telomere-to-Telomere Consortium has finished the complete, diploid genome of a person. The cover is inspired by a karyotype of the chromosomes in metaphase, representing the two haplotypes as different colors.

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👀"These results establish that naturally occurring copy-number variation within repetitive pericentromeric DNA is not merely noise, but a functional source of variation in chromosome segregation and gene regulation."

bioRxiv Genetics@biorxiv-genetic.bsky.social · 4mo ago

Pericentromeric repeat copy number tunes heterochromatin dosage to control chromosome segregation and gene expression in fission yeast https://www.biorxiv.org/content/10.64898/2026.05.08.723760v1

Happy to share our latest paper. Our findings uncover a unique chromatin architecture and spatial chromosome arrangement in gonadal germ cells and document that alongside global DNA demethylation, the germline epigenetic reprogramming involves reorganisation of the 3D genome.

Global reorganization of genome architecture at the transition to gametogenesis - Nature Structural & Molecular Biology

Huang, Rigau and colleagues observe major changes in how DNA is organized in early germ cells before they start developing into sperm or eggs. These results show that germline removes structural ‘memo...

nature.com

Lesson learned: Repetitive regions of the genome, like the short arms of the acrocentrics, are prone to recombination and duplication. This makes them a pain to sequence, but also very dynamic. Natural selection can take advantage of that instability to effect rapid change [19/21]

Our findings identify centromeric cohesion protection as a modifiable determinant of egg quality. This is, to our knowledge, the first molecular intervention shown to improve chromosome cohesion in human eggs. (9/10)

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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/...

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 ...

link.springer.com