How forces and mechanics influence and regulate living cells remains elusive. Mechanomemory, the response to a mechanical perturbation that persists after the perturbation is removed, is believed to be a key to understanding the impact of forces and mechanics on cell functions. Recently, our lab has demonstrated the presence of mechanomemory that lasts for â¼30âmin after applying external stress via integrins. Herein, we test the hypothesis that applications of short intermittent episodes of stress exert long-term effects on mechanomemory via the process of mechanotransduction. An Arginine-Glycine-Aspartic acid (RGD)-peptides-coated 4-μm magnetic bead was bound to the integrin receptors to apply stresses to the surface of a Chinese Hamster Ovary cell. At the same stress magnitude and frequency (15âPa at 0.3âHz), multiple cycles of externally applied intermittent 2 or 10âmin stresses with 15âmin intervals, 10âmin stresses with 10âmin intervals, or a 30âmin stress plus a 30âmin load-free interval increased nuclear translocation of YAP (Yes-Associated Protein) and Ctgf gene expression, like that by a 60âmin continuous stress, but a 30âmin continuous stress did not. Short durations of intermittent stresses increased F-actin in the cytoplasm, which coincided with the elevated YAP translocation. Inhibiting F-actin or actomyosin but not microtubules blocked stress-induced YAP translocation to the nucleus. Cells on soft substrates translocate more YAP than on stiff substrates after external load release. These results highlight the impact of multiple intermittent stresses-induced cytoplasmic mechanomemory on cell biological functions via YAP translocation.
Mechanomemory after short episodes of intermittent stresses induces YAP translocation via increasing F-actin.
阅读:2
作者:Rashid Fazlur, Njoki Elvis, Kabbo Sadia Amin, Wang Ning
期刊: | APL Bioengineering | 影响因子: | 4.100 |
时间: | 2025 | 起止号: | 2025 Apr 18; 9(2):026107 |
doi: | 10.1063/5.0253046 |
特别声明
1、本文转载旨在传播信息,不代表本网站观点,亦不对其内容的真实性承担责任。
2、其他媒体、网站或个人若从本网站转载使用,必须保留本网站注明的“来源”,并自行承担包括版权在内的相关法律责任。
3、如作者不希望本文被转载,或需洽谈转载稿费等事宜,请及时与本网站联系。
4、此外,如需投稿,也可通过邮箱info@biocloudy.com与我们取得联系。