期刊
ELIFE
卷 10, 期 -, 页码 -出版社
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.68082
关键词
-
类别
资金
- Centre National de la Recherche Scientifique
- Agence Nationale de la Recherche [ANR-17-CE11-0029-01, ANR-10-IDEX-0001-02PSL]
- Agence Nationale de la Recherche LabexCelTisPhyBio [11-LBX-0038]
- National Institutes of Health [F31GM128325, R01GM122917]
- Agence Nationale de la Recherche (ANR) [ANR-17-CE11-0029] Funding Source: Agence Nationale de la Recherche (ANR)
This study reveals that filopodia initiation requires close collaboration between an actin-binding protein, the state of the actin cytoskeleton, and MF myosin activity.
Filopodia are thin, actin-based structures that cells use to interact with their environments. Filopodia initiation requires a suite of conserved proteins but the mechanism remains poorly understood. The actin polymerase VASP and a MyTH-FERM (MF) myosin, DdMyo7 in amoeba, are essential for filopodia initiation. DdMyo7 is localized to dynamic regions of the actin-rich cortex. Analysis of VASP mutants and treatment of cells with anti-actin drugs shows that myosin recruitment and activation in Dictyostelium requires localized VASP-dependent actin polymerization. Targeting of DdMyo7 to the cortex alone is not sufficient for filopodia initiation; VASP activity is also required. The actin regulator locally produces a cortical actin network that activates myosin and together they shape the actin network to promote extension of parallel bundles of actin during filopodia formation. This work reveals how filopodia initiation requires close collaboration between an actin-binding protein, the state of the actin cytoskeleton and MF myosin activity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据