ArticleNature communications2025
Spindle-localized F-actin regulates polar MTOC organization and the fidelity of meiotic spindle formation.
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 4 papers.
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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
4 citing papers in PubMed.
- Molecular mechanisms of folliculogenesis and oogenesis.Systems biology in reproductive medicine · 2026Review
- From Cytoskeletal Remodeling to Oocyte Quality: The Emerging Role of Mechanics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- KIF23 regulates cytoskeleton dynamics for cytokinesis and mitochondrial function during oocyte meiosis.Cell communication and signaling : CCS · 2026Article
- A Supra-Physiological Dose of 2-Hydroxyestradiol Impairs Meiotic Progression and Developmental Competence of Mouse Antral Oocytes.Journal of developmental biology · 2025Article
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14 authors.
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Abstract
Mammalian oocytes are notoriously prone to chromosome segregation errors leading to aneuploidy. The spindle provides the machinery for accurate chromosome segregation during cell division. Mammalian oocytes lack centrioles and, therefore, mouse meiotic spindle relies on the organization of numerous acentriolar microtubule organizing centers into two poles (polar microtubule organizing centers, pMTOCs). The traditional view is that, in mammalian oocytes, microtubules are the sole cytoskeletal component responsible for regulating pMTOC organization and spindle assembly. We identify a previously unrecognized F-actin pool that surrounds pMTOCs, forming F-actin cage-like structure. We demonstrate that F-actin localization on the spindle depends on unconventional myosins X and VIIb. Selective disruption of spindle-localized F-actin, using myosin X/VIIb knockdown oocytes or photoswitchable Optojasp-1, perturbs pMTOC organization, leading to unfocused spindle poles and chromosome missegregation. Here, we unveil an important function of spindle-localized F-actin in regulating pMTOC organization, a critical process for ensuring the fidelity of meiotic spindle formation and proper chromosome segregation.
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