ArticleThe EMBO journal2025
Tension-sensitive LINC-RhoA signaling prevents chromatin bridge breakage in cytokinesis.
Article in The EMBO journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Review
- Maintaining Genome Integrity: Actin Polymerization Stabilizes Chromatin Bridges in Cytokinesis.International journal of molecular sciences · 2026Review
- Stress transmission towards the nucleus of the cell.Frontiers in cell and developmental biology · 2026Review
- ROS-pH Dual-Responsive Polydopamine Nanoparticles for Targeted Fasudil Delivery Ameliorate Multiple Pathologies in Diabetic Retinopathy.International journal of nanomedicine · 2026Article
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Authors and funding
4 authors.
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Abstract
In the presence of chromatin bridges in cytokinesis, human cells retain actin-rich structures (actin patches) at the base of the intercellular canal to prevent chromosome breakage. Here, we show that daughter nuclei connected by chromatin bridges are under mechanical tension that requires interaction of the nuclear membrane Sun1/2-Nesprin-2 Linker of Nucleoskeleton and Cytoskeleton (LINC) complex with the actin cytoskeleton, and an intact nuclear lamina. This nuclear tension promotes accumulation of Sun1/2-Nesprin-2 proteins at the base of chromatin bridges and local enrichment of the RhoA-activator PDZ RhoGEF through PDZ-binding to cytoplasmic Nesprin-2 spectrin repeats. In turn, PDZ RhoGEF activates the small GTPase RhoA and downstream ROCK-LIMK-Cofilin and mDia1 signaling to generate actin patches and prevent chromatin bridge breakage in cytokinesis. These findings identify a novel mechanosensing mechanism by which chromatin bridges promote remodeling of the actin cytoskeleton, through tension-induced activation of LINC-PDZ RhoGEF-RhoA signaling, to generate actin patches to preserve genome integrity.
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