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Mitotic motor CENP-E cooperates with PRC1 in temporal control of central spindle assembly

Journal of Molecular Cell Biology 2020年第8期12卷 654-665页

作者： Xu Liu Leilei Xu Junying Li Phil Y.Yao Wanjuan Wang Hazrat Ismail Haowei Wang bryce liao Zhihong Yang Tarsha Ward Ke Ruan Jianchun Zhang Quan Wu Ping He Xia Ding Dongmei Wang Chuanhai Fu Zhen Dou Feng Yan Wenwen Wang Xing Liu Xuebiao Yao MOE Key Laboratory for Cellular Dynamics&Anhui Key Laboratory for Chemical Biology CAS Center for Excellence in Molecular Cell ScienceHefei National Science Center for Physical Sciences at Microscale&University of Science and Technology of ChinaHefei 230027China Department of Physiology Morehouse School of MedicineAtlantaGA 30310USA School of Basic Medical Sciences Beijing University of Chinese MedicineBeijing 100029China Department of Biology Duke University DurhamNC 27708USA Institute of ProteoGenomics Beijing 100029China Harvard Medical School BostonMA 02115USA

Error-free cell division depends on the accurate assembly of the spindle midzone from dynamic spindle microtubules to ensure chromatid segregation during metaphase-anaphase ***,the mechanism underlying the key transition from the mitotic spindle to central spindle before anaphase onset remains *** the prevalence of chromosome instability phenotype in gastric tumorigenesis,we developed a strategy to model context-dependent cell division using a combination of light sheet microscope and 3D gastric *** sheet microscopic image analyses of 3D organoids showed that CENP-E inhibited cells undergoing aberrant metaphase-anaphase transition and exhibiting chromosome segregation errors during *** real-time imaging analyses of 2D cell culture revealed that CENP-E inhibited cells undergoing central spindle splitting and chromosome instability *** biotinylated syntelin as an affinity matrix,we found that CENP-E forms a complex with PRC1 in mitotic *** inhibition of CENP-E in metaphase by syntelin prevented accurate central spindle assembly by perturbing temporal assembly of PRC1 to the ***,CENP-E-mediated PRC1 assembly to the central spindle constitutes a temporal switch to organize dynamic kinetochore microtubules into stable midzone *** findings reveal a previously uncharacterized role of CENP-E in temporal control of central spindle *** CENP-E is absent from yeast,we reasoned that metazoans evolved an elaborate central spindle organization machinery to ensure accurate sister chromatid segregation during anaphase and cytokinesis.

关键词： organoids.cell division central spindle CENP-E syntelin PRC1

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