Mechanics of the F-actin cytoskeleton.

Mechanics of the F-actin cytoskeleton.
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DOI:
10.1016/j.jbiomech.2009.09.003
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发表时间:
2010-01-05
影响因子:
2.4
通讯作者:
Gardel, Margaret L.
Gardel, Margaret L.
中科院分区:
工程技术3区
文献类型:
--
作者:
Stricker, Jonathan;Falzone, Tobias;Gardel, Margaret L.

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丝状肌动蛋白(F-肌动蛋白)细胞骨架的动态调节对许多物理细胞过程至关重要,包括细胞黏附、迁移和分裂。这些过程中的每一个都需要对细胞形状和机械力的产生进行精确的调节,这在很大程度上是由不同种类的F-肌动蛋白网络和束的动态力学行为调节的。在这篇综述中,我们回顾了目前对F-肌动蛋白网络机制的理解,并确定了建立物理模型所需的进一步研究领域。我们首先回顾了我们对在体外重组的F-肌动蛋白网络的力学行为的理解,重点是“活跃的”F-肌动蛋白网络的非线性力学响应和行为。然后,我们探索在活细胞中形成的细胞骨架F-肌动蛋白网络和束的机械反应的类型,并确定这些测量结果如何与在体外形成的重组F-肌动蛋白网络上的测量结果相对应。总之,这些方法确定了活的细胞骨架物质研究中的挑战和机遇。
Dynamic regulation of the filamentous actin (F-actin) cytoskeleton is critical to numerous physical cellular processes, including cell adhesion, migration and division. Each of these processes require precise regulation of cell shape and mechanical force generation which, to a large degree, is regulated by the dynamic mechanical behaviors of a diverse assortment of F-actin networks and bundles. In this review, we review the current understanding of the mechanics of F-actin networks and identify areas of further research needed to establish physical models. We first review our understanding of the mechanical behaviors of F-actin networks reconstituted in vitro, with a focus on the nonlinear mechanical response and behavior of “active” F-actin networks. We then explore the types of mechanical response measured of cytoskeletal F-actin networks and bundles formed in living cells and identify how these measurements correspond to those performed on reconstituted F-actin networks formed in vitro. Together, these approaches identify the challenges and opportunities in the study of living cytoskeletal matter.
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