Cells respond to space microgravity through cytoskeleton reorganization

细胞骨架 空格(标点符号) 细胞生物学 物理
作者
Xin-Tong Wu,Xiao Yang,Ran Tian,Ying‐Hui Li,Chengzhi Wang,Yubo Fan,Lianwen Sun
出处
期刊:The FASEB Journal [Wiley]
卷期号:36 (2)
标识
DOI:10.1096/fj.202101140r
摘要

Decades of spaceflight studies have provided abundant evidence that individual cells in vitro are capable of sensing space microgravity and responding with cellular changes both structurally and functionally. However, how microgravity is perceived, transmitted, and converted to biochemical signals by single cells remains unrevealed. Here in this review, over 40 cellular biology studies of real space fights were summarized. Studies on cells of the musculoskeletal system, cardiovascular system, and immune system were covered. Among all the reported cellular changes in response to space microgravity, cytoskeleton (CSK) reorganization emerges as a key indicator. Based on the evidence of CSK reorganization from space flight research, a possible mechanism from the standpoint of “cellular mechanical equilibrium” is proposed for the explanation of cellular response to space microgravity. Cytoskeletal equilibrium is broken by the gravitational change from ground to space and is followed by cellular morphological changes, cell mechanical properties changes, extracellular matrix reorganization, as well as signaling pathway activation/inactivation, all of which ultimately lead to the cell functional changes in space microgravity.
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