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Review
. 2013 Oct;25(5):543-9.
doi: 10.1016/j.ceb.2013.04.010. Epub 2013 May 28.

Mechanical guidance of cell migration: lessons from chemotaxis

Pere Roca-Cusachs  1 , Raimon Sunyer, Xavier Trepat
Affiliations
Review

Mechanical guidance of cell migration: lessons from chemotaxis

Pere Roca-Cusachs et al. Curr Opin Cell Biol. 2013 Oct.

Abstract

For an organism to develop, for a wound to heal, or for a tumor to invade, cells must be able to migrate following directional cues. It is widely accepted that directed cell migration is enabled by cellular sensing of local gradients in the concentration of chemical factors. The main molecular players involved in this mode of cellular guidance--chemotaxis--have been identified and the combination of modeling and experimental approaches is progressively unveiling a clear picture of the underlying mechanisms. Evidence obtained over the past decade has shown that cells can also be guided by mechanical stimuli such as physical forces or gradients in extracellular matrix stiffness. Mechanical guidance, which we refer here globally as mechanotaxis, is also thought to drive processes in development, cancer, and wound healing, but experimental evidence is scattered and mechanisms remain largely unknown. Here we use the better understood process of chemotaxis as a reference to define the building blocks that are required for cell guidance, and then discuss how these building blocks might be organized in mechanotaxis. We show that both chemotaxis and mechanotaxis involve an exquisite interplay between physical and chemical mechanisms to sense gradients, establish polarization, and drive directed migration.

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