SCAR and the Arp2/3 complex polarise the actomyosin cortex and plasma membrane organization in asymmetrically dividing neuroblasts
SCAR and the Arp2/3 complex polarise the actomyosin cortex and plasma membrane organization in asymmetrically dividing neuroblasts
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SCAR 和 Arp2/3 复合物使不对称分裂神经母细胞中的肌动球蛋白皮质和质膜组织极化
DOI:
10.1101/2023.01.05.522888
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Cazzagon G
中科院分区:
文献类型:
--
作者:
Cazzagon G
While the Formin-nucleated actomyosin cortex has been shown to drive the changes in cell shape that accompany cell division in both symmetric and asymmetric cell divisions, it is not clear whether or not Arp2/3-nucleated branched actin filament networks also play a role. In order to look for mitotic roles of the Arp2/3 complex, here we useDrosophilaneural stem cells as a model system. These cells are unusual in that they divide asymmetrically to produce a large and small daughter cell with different fates. Our analysis identifies a pool of Arp2/3-dependent actin-based membrane protrusions that form at the apical cortex of these cells as they enter mitosis. Strikingly, at metaphase, these protrusions co-localise with components of the SCAR complex. By perturbing Arp2/3 complex activity we show that this apical pool of actin likely functions to limit the accumulation of apical Myosin in metaphase. Following the onset of anaphase, the loss of these SCAR and Arp2/3 dependent structures then leads to a delay in the clearance of apical Myosin and to cortical instability at cytokinesis. These data point to a role for a polarised branched actin filament network in fine tuning the apical actomyosin cortex to enable the precise control of cell shape during asymmetric cell division.
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影响因子:
8.8
作者:
Mateusz Trylinski;F. Schweisguth
通讯作者:
F. Schweisguth
DOI:
10.1083/jcb.200109057
发表时间:
2002-02-18
期刊:
The Journal of cell biology
影响因子:
--
作者:
Zallen JA;Cohen Y;Hudson AM;Cooley L;Wieschaus E;Schejter ED
通讯作者:
Schejter ED
影响因子:
64.8
作者:
Rodrigues, Nelio T. L.;Lekomtsev, Sergey;Baum, Buzz
通讯作者:
Baum, Buzz
DOI:
10.1083/jcb.201007136
发表时间:
2010-11-01
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mitsushima M;Aoki K;Ebisuya M;Matsumura S;Yamamoto T;Matsuda M;Toyoshima F;Nishida E
通讯作者:
Nishida E
影响因子:
9.2
作者:
Mateusz Trylinski;Khalil Mazouni;F. Schweisguth
通讯作者:
F. Schweisguth