Abscission Couples Cell Division to Embryonic Stem Cell Fate

Abscission Couples Cell Division to Embryonic Stem Cell Fate
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脱落将细胞分裂与胚胎干细胞的命运联系起来

DOI:
10.1101/798165
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发表时间:
2019
期刊:
影响因子:
11.8
通讯作者:
E. Paluch
E. Paluch
中科院分区:
生物学1区
文献类型:
--
作者:
A. Chaigne;C. Labouesse;Meghan Agnew;É. Hannezo;K. Chalut;E. Paluch

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细胞命运转换是发育和动态平衡的关键。因此,了解控制命运转变的细胞机制是至关重要的。细胞分裂与许多干细胞的命运决定有关,包括神经元和上皮祖细胞。在其他干细胞中,如胚胎干细胞,分裂的作用尚不清楚。在这里,我们表明,在小鼠ES细胞中,退出幼稚的多能性通常发生在分裂之后。我们进一步表明,姐妹细胞之间的退出时间密切相关,这些细胞在分裂后很长一段时间仍然通过细胞质桥梁连接,随着细胞退出天真多能性,桥梁脱落逐渐加速。最后,干扰脱落会损害从天真的多能性中退出。总而言之,我们的数据表明,分裂机制的转换导致更快的分离是多能性退出的关键。我们的研究发现,脱落是连接细胞分裂和命运转换的关键步骤。
Cell fate transitions are key to development and homeostasis. It is thus essential to understand the cellular mechanisms controlling fate transitions. Cell division has been implicated in fate decisions in many stem cells, including neuronal and epithelial progenitors. In other stem cells, such as embryonic stem (ES) cells, the role of division remains unclear. Here we show that exit from naïve pluripotency in mouse ES cells generally occurs after a division. We further show that exit timing is strongly correlated between sister cells, which remain connected by cytoplasmic bridges long after division, and that bridge abscission progressively accelerates as cells exit naïve pluripotency. Finally, interfering with abscission impairs exit from naïve pluripotency. Altogether, our data indicate that a switch in the division machinery leading to faster abscission is crucial for pluripotency exit. Our study identifies abscission as a key step coupling cell division to fate transitions.
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