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We propose a minimal mathematical model to explain long-range coordination ofdynamics of multiple cells in epithelial spreading, which may be induced, underdifferent conditions, by a chemical signal, or mechanical stress, or both. Themodel is based on chemo-mechanical interactions including a chemical effect ofstress and concentration-dependent traction. The results, showing kinaseconcentration distribution and cell displacement, allow us to reproduce twoactivation waves on different time scales observed in the experiment, anddistinguish between distinct dynamical patterns observed under conditions ofinjury or unconstraining.

Chemical and Mechanical Signaling in Epithelial Spreading