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抵抗是徒劳的:集中力产生用于不对称细胞分裂。

Resistance is futile: Centering forces yield for asymmetric cell division.

机构信息

Department of Physics and Astronomy and Department of Biological Sciences, Eukaryotic Pathogen Innovation Center Faculty Scholar, Clemson University, Clemson, SC

Departments of Cell and Developmental Biology, Chemical and Biomolecular Engineering, and Biochemistry, Vanderbilt University, Nashville, TN

出版信息

J Cell Biol. 2019 Mar 4;218(3):727-728. doi: 10.1083/jcb.201902039. Epub 2019 Feb 15.

DOI:10.1083/jcb.201902039
PMID:30770435
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6400559/
Abstract

Asymmetric cell division relies on microtubule-based forces to asymmetrically position the mitotic apparatus. In this issue, Sallé et al. (2019. https://doi.org/10.1083/jcb.201807102) use magnetic tweezers to induce asymmetric division in sea urchin zygotes, demonstrating that asymmetry could arise from a time-dependent weakening of centering forces.

摘要

不对称细胞分裂依赖于基于微管的力来将有丝分裂装置不对称定位。在本期中,Sallé 等人(2019. https://doi.org/10.1083/jcb.201807102)使用磁镊在海胆受精卵中诱导不对称分裂,证明不对称性可能源于中心体定位力的时间依赖性减弱。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01e7/6400559/d7e0c65149fa/JCB_201902039_Fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01e7/6400559/d7e0c65149fa/JCB_201902039_Fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01e7/6400559/d7e0c65149fa/JCB_201902039_Fig1.jpg

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本文引用的文献

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Analysis of the Role of Astral Rays in Pronuclear Migration in Sand Dollar Eggs by the Colcemid-UV Method: (sperm aster/pronuclear migration/sand dollar/colcemid-UV method).用秋水仙酰胺-紫外线法分析海胆卵中星体射线在原核迁移中的作用:(精子星体/原核迁移/海胆/秋水仙酰胺-紫外线法)
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A force-generating machinery maintains the spindle at the cell center during mitosis.
一种产生力的机制在有丝分裂期间将纺锤体维持在细胞中心。
Science. 2016 May 27;352(6289):1124-7. doi: 10.1126/science.aad9745.
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Cortical dynein controls microtubule dynamics to generate pulling forces that position microtubule asters.皮质动力蛋白控制微管动力学,产生牵拉微管星体的力。
Cell. 2012 Feb 3;148(3):502-14. doi: 10.1016/j.cell.2012.01.007.
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Intracellular organelles mediate cytoplasmic pulling force for centrosome centration in the Caenorhabditis elegans early embryo.细胞内细胞器介导细胞质牵拉力,使中心体在秀丽隐杆线虫早期胚胎中定位于中心。
Proc Natl Acad Sci U S A. 2011 Jan 4;108(1):137-42. doi: 10.1073/pnas.1013275108. Epub 2010 Dec 20.
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Curr Biol. 2010 Nov 23;20(22):2040-5. doi: 10.1016/j.cub.2010.10.024. Epub 2010 Nov 4.
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Computer simulations and image processing reveal length-dependent pulling force as the primary mechanism for C. elegans male pronuclear migration.计算机模拟和图像处理表明,长度依赖性拉力是秀丽隐杆线虫雄性原核迁移的主要机制。
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