Stochastic resetting and the mean-field dynamics of focal adhesions
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Published version
Author(s)
Bressloff, Paul C
Type
Journal Article
Abstract
In this paper we investigate the effects of diffusion on the dynamics of a single focal adhesion at the leading
edge of a crawling cell by considering a simplified model of sliding friction. Using a mean-field approximation,
we derive an effective single-particle system that can be interpreted as an overdamped Brownian particle with
spatially dependent stochastic resetting. We then use renewal and path-integral methods from the theory of
stochastic resetting to calculate the mean sliding velocity under the combined action of diffusion, active forces,
viscous drag, and elastic forces generated by the adhesive bonds. Our analysis suggests that the inclusion of
diffusion can sharpen the response to changes in the effective stiffness of the adhesion bonds. This is consistent
with the hypothesis that force fluctuations could play a role in mechanosensing of the local microenvironment.
edge of a crawling cell by considering a simplified model of sliding friction. Using a mean-field approximation,
we derive an effective single-particle system that can be interpreted as an overdamped Brownian particle with
spatially dependent stochastic resetting. We then use renewal and path-integral methods from the theory of
stochastic resetting to calculate the mean sliding velocity under the combined action of diffusion, active forces,
viscous drag, and elastic forces generated by the adhesive bonds. Our analysis suggests that the inclusion of
diffusion can sharpen the response to changes in the effective stiffness of the adhesion bonds. This is consistent
with the hypothesis that force fluctuations could play a role in mechanosensing of the local microenvironment.
Date Issued
2020-08
Date Acceptance
2020-08-12
Citation
Physical Review E, 2020, 102 (2)
ISSN
2470-0045
Publisher
American Physical Society (APS)
Journal / Book Title
Physical Review E
Volume
102
Issue
2
Copyright Statement
©2020 American Physical Society
Identifier
http://dx.doi.org/10.1103/physreve.102.022134
Publication Status
Published
Article Number
022134
Date Publish Online
2020-08-24