摘要
Focal adhesion complexes function as the mediators of cell-extracellular matrix interactions to sense and transmit the extracellular signals.Previous studies have demonstrated that cardiomyocyte focal adhesions can be modulated by surface topographic features.However,the response of focal adhesions to dynamic surface topographic changes remains underexplored.To study this dynamic responsiveness of focal adhesions,we utilized a shape memory polymer-based substrate that can produce a flat-to-wrinkle surface transition triggered by an increase of temperature.Using this dynamic culture system,we analyzed three proteins(paxillin,vinculin and zyxin)from different layers of the focal adhesion complex in response to dynamic extracellular topographic change.Hence,we quantified the dynamic profile of cardiomyocyte focal adhesion in a time-dependent manner,which provides new understanding of dynamic cardiac mechanobiology.
基金
supported by the NIH NICHD[R01HD101130]
NSF[CBET-1804875,CBET-1943798 and CMMI-2130192]
NSF[DMR-1609523 and CMMI-2022421]
Syracuse University intramural CUSE Grant
Gerber Grant
BioInspired Institute Seed Grant.
