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- W2783409418 abstract "LIM kinases (LIMK1/2) are LIM domain‐containing serine/threonine/tyrosine kinases that mediate multiple cellular processes in mitosis. In the present study, we explored the functional roles and potential signaling pathway of LIMK1/2 during mouse oocyte meiosis. Disruption of LIMK1/2 activity and expression significantly decreased oocyte polar body extrusion. Live‐cell imaging revealed that spindle migration was disturbed after both LIMK1 and LIMK2 knock down, and this might be due to aberrant distribution of actin filaments in the oocyte cytoplasm and cortex. Meanwhile, our results demonstrated that the function of LIMK1 and LIMK2 in actin assembly was related to cofilin phosphorylation levels. In addition, disruption of LIMK1/2 activity significantly increased the percentage of oocytes with abnormal spindle morphologies, which was confirmed by the abnormal p‐MAPK localization. We further, explored the upstream molecules of LIMK1/2, and we found that after depletion of ROCK, phosphorylation of LIMK1/2 and cofilin were significantly decreased. Moreover, RhoA inhibition caused the decreased expression of ROCK, p‐LIMK1/2, and cofilin. In summary, our results indicated that the small GTPase RhoA regulated LIMK1/2‐cofilin to modulate cytoskeletal dynamics during mouse oocyte meiosis." @default.
- W2783409418 created "2018-01-26" @default.
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- W2783409418 date "2018-03-06" @default.
- W2783409418 modified "2023-10-17" @default.
- W2783409418 title "The small GTPase RhoA regulates the LIMK1/2‐cofilin pathway to modulate cytoskeletal dynamics in oocyte meiosis" @default.
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- W2783409418 doi "https://doi.org/10.1002/jcp.26450" @default.
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