Crawling in a Fluid

Alexander Farutin, Jocelyn Étienne, Chaouqi Misbah, and Pierre Recho
Phys. Rev. Lett. 123, 118101 – Published 13 September 2019
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Abstract

There is increasing evidence that mammalian cells not only crawl on substrates but can also swim in fluids. To elucidate the mechanisms of the onset of motility of cells in suspension, a model which couples actin and myosin kinetics to fluid flow is proposed and solved for a spherical shape. The swimming speed is extracted in terms of key parameters. We analytically find super- and subcritical bifurcations from a nonmotile to a motile state and also spontaneous polarity oscillations that arise from a Hopf bifurcation. Relaxing the spherical assumption, the obtained shapes show appealing trends.

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  • Received 1 February 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.118101

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Physics of Living Systems

Authors & Affiliations

Alexander Farutin*, Jocelyn Étienne, Chaouqi Misbah, and Pierre Recho

  • Univ. Grenoble Alpes, CNRS, LIPhy, F-38000 Grenoble, France

  • *alexandr.farutin@univ-grenoble-alpes.fr

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Issue

Vol. 123, Iss. 11 — 13 September 2019

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