title: Spontaneous contractility-mediated cortical flow generates cell migration in three-dimensional environments.
abstract: We present a model of cell motility generated by actomyosin contraction of the cell cortex. We identify, analytically, dynamical instabilities of the cortex and show that they yield steady-state cortical flows, which, in turn, can induce cell migration in three-dimensional environments. This mechanism relies on the regulation of contractility by myosin, whose transport is explicitly taken into account in the model. Theoretical predictions are compared to experimental data of tumor cells migrating in three-dimensional matrigel and suggest that this mechanism could be a general mode of cell migration in three-dimensional environments.
authors: UMR 7600, Université Pierre et Marie Curie/CNRS (Centre National de la Recherche Scientifique), Paris, France. rhoda.hawkins@physics.org
authors: Rhoda J
authors: RJ
authors: Hawkins
authors: Renaud
authors: R
authors: Poincloux
authors: Olivier
authors: O
authors: Bénichou
authors: Matthieu
authors: M
authors: Piel
authors: Philippe
authors: P
authors: Chavrier
authors: Raphaël
authors: R
authors: Voituriez
mesh_terms: D000205:Actomyosin / Q000378:metabolism*; D045744:Cell Line, Tumor; D002465:Cell Movement; D060833:Cellular Microenvironment; D003094:Collagen / Q000737:chemistry*; D003593:Cytoplasm / Q000378:metabolism*; D004338:Drug Combinations; D006801:Humans; D007797:Laminin / Q000737:chemistry*; D008954:Models, Biological; D011509:Proteoglycans / Q000737:chemistry*
chemical_list: D004338:Drug Combinations; D007797:Laminin; D011509:Proteoglycans; C059485:matrigel; D003094:Collagen; D000205:Actomyosin