Filopodia-based contact stimulation of cell migration drives tissue morphogenesis.

Filopodia-based contact stimulation of cell migration drives tissue morphogenesis.
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基于丝状伪足的细胞迁移的接触刺激驱动组织形态发生。

DOI:
10.1038/s41467-020-20362-2
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发表时间:
2021-02-04
影响因子:
16.6
通讯作者:
Bogdan S
Bogdan S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Bischoff MC;Lieb S;Renkawitz-Pohl R;Bogdan S

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在形态发生过程中,细胞集体迁移形成组织和器官。接触运动抑制(CIL)通过抑制细胞-细胞接触处的片脂突起和促进前沿的极化来驱动集体迁移。在这里,我们报告了CIL相关的肌管的集体细胞行为,这些肌管缺乏片脂突起,而是使用丝足以依赖于形成蛋白的方式作为凝聚簇移动。我们进行了遗传学、药理学和机械扰动分析,以揭示rac2、cdc42和Rho1在肌管迁移中的重要作用。这些因素不同地控制着突起动力学和细胞-基质黏附的形成。我们还发现,活性的Rho1 GTP酶定位于收缩自由边的丝状伪足,并且Rok依赖的肌球蛋白的收缩性质并不介导细胞-细胞接触处突起的收缩,但可能在细胞上肌动蛋白缆线的收缩中发挥重要作用。基于这些发现,我们认为细胞-基质黏附的接触依赖的不对称性驱动定向运动,而收缩的肌动蛋白电缆有助于迁移细胞团的完整性。迁移的接触刺激驱动组织形态发生。在这里,作者报告了基于丝足的细胞-基质黏附的接触依赖的不对称性驱动定向运动,而收缩肌动蛋白电缆有助于果蝇发育中的睾丸肌管中迁移细胞团的完整性。
Cells migrate collectively to form tissues and organs during morphogenesis. Contact inhibition of locomotion (CIL) drives collective migration by inhibiting lamellipodial protrusions at cell–cell contacts and promoting polarization at the leading edge. Here, we report a CIL-related collective cell behavior of myotubes that lack lamellipodial protrusions, but instead use filopodia to move as a cohesive cluster in a formin-dependent manner. We perform genetic, pharmacological and mechanical perturbation analyses to reveal the essential roles of Rac2, Cdc42 and Rho1 in myotube migration. These factors differentially control protrusion dynamics and cell–matrix adhesion formation. We also show that active Rho1 GTPase localizes at retracting free edge filopodia and that Rok-dependent actomyosin contractility does not mediate a contraction of protrusions at cell–cell contacts, but likely plays an important role in the constriction of supracellular actin cables. Based on these findings, we propose that contact-dependent asymmetry of cell–matrix adhesion drives directional movement, whereas contractile actin cables contribute to the integrity of the migrating cell cluster. Contact stimulation of migration drives tissue morphogenesis. Here the authors report that filopodia-based contact-dependent asymmetry of cell–matrix adhesion drives directional movement, whereas contractile actin cables contribute to the integrity of the migrating cell cluster in the myotubes of Drosophila developing testes.
肌动蛋白调节波复合物的结构和控制。
DOI: 10.1038/nature09623
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