ArticleNature communications2025
Centromere protection requires strict mitotic inactivation of the Bloom syndrome helicase complex.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Review
- Mitotic BLM functions are required to maintain genomic stability.Nucleic acids research · 2026Article
- The interplay of the translocase activity and protein recruitment function of PICH in ultrafine anaphase bridge resolution and genomic stability.Nucleic acids research · 2025Article
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Authors and funding
9 authors.
Funding
Abstract
The BTRR (BLM/TOP3A/RMI1/RMI2) complex resolves DNA replication and recombination intermediates to maintain genome stability. Alongside PICH, they target mitotic DNA intertwinements, known as ultrafine DNA bridges, facilitating chromosome segregation. Both BLM and PICH undergo transient mitotic hyper-phosphorylation, but the biological significance of this remains elusive. Here, we uncover that during early mitosis, CDK1 and PLK1 constrain BTRR complex activities at centromeres. CDK1 destabilises the complex, limiting its binding to PICH at specialised chromatin underneath kinetochores. Inactivating the BLM-TOP3A interaction compromises the UFB-binding complex functions and prevents centromere destruction. Different phosphorylation on BLM affects the TRR subcomplex interaction and the mitotic activity, particularly phosphorylation at Ser144 and multiple PLK1-target sites suppresses illegitimate centromeric DNA unwinding. However, unleashing such activity after sister-chromatid cohesion inactivation facilitates the separation of entangled chromosomes. Here, we show a centromere protection pathway in human mitotic cells, heavily reliant on a tight spatiotemporal control of the BTRR complex.
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