Precise Tuning of Cortical Contractility Regulates Cell Shape during Cytokinesis.
Precise Tuning of Cortical Contractility Regulates Cell Shape during Cytokinesis.
复制标题
DOI:
10.1016/j.celrep.2020.03.041
复制
发表时间:
2020-04-07
期刊:
影响因子:
8.8
通讯作者:
Burnette DT
中科院分区:
文献类型:
--
作者:
Taneja N;Bersi MR;Baillargeon SM;Fenix AM;Cooper JA;Ohi R;Gama V;Merryman WD;Burnette DT
The mechanical properties of the actin cortex regulate shape changes during cell division, cell migration, and tissue morphogenesis. We show that modulation of myosin II (MII) filament composition allows tuning of surface tension at the cortex to maintain cell shape during cytokinesis. Our results reveal that MIIA generates cortex tension, while MIIB acts as a stabilizing motor and its inclusion in MII hetero-filaments reduces cortex tension. Tension generation by MIIA drives faster cleavage furrow ingression and bleb formation. We also show distinct roles for the motor and tail domains of MIIB in maintaining cytokinetic fidelity. Maintenance of cortical stability by the motor domain of MIIB safeguards against shape instability-induced chromosome missegregation, while its tail domain mediates cortical localization at the terminal stages of cytokinesis to mediate cell abscission. Because most non-muscle contractile systems are cortical, this tuning mechanism will likely be applicable to numerous processes driven by myosin-II contractility. Taneja et al. describe distinct roles for the two myosin-II paralogs in regulating actin cortex mechanics during cell division. Myosin-IIA generates cortex tension, while myosin-IIB maintains cortical stability. Optimal levels of the two paralogs within hetero-filaments at the cortex are required for shape stability and cytokinetic fidelity during cell division.
登录
查看更多内容
影响因子:
7.8
作者:
Fujiwara, K;Pollard, T D
通讯作者:
Pollard, T D
影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1083/jcb.200207130
发表时间:
2003-01-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Maddox AS;Burridge K
通讯作者:
Burridge K
DOI:
10.1073/pnas.0913669107
发表时间:
2010-08-31
影响因子:
11.1
作者:
Brugues, Jan;Maugis, Benoit;Sens, Pierre
通讯作者:
Sens, Pierre
影响因子:
13.6
作者:
Fritzsche M;Erlenkämper C;Moeendarbary E;Charras G;Kruse K
通讯作者:
Kruse K