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Abstract In migrating cells, the GTPase Rac organizes a protrusive front, whereas Rho organizes a contractile back. How these GTPases are positioned at opposite poles remains unclear. We leverage optogenetics, mechanical perturbations, and mathematical modelling to reveal a surprising mechanochemical long-range mutual activation between front and back polarity programmes that complements their well-known local mutual inhibition.
1Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA 2Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA 3Department of Immunobiology, University of Lausanne, Epalinges, Switzerland 4Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, USA 5Immunology Graduate Group, University of Pennsylvania, Philadelphia, PA, USA 6Children’s Hospital of Philadelphia,...
1Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA 2Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA 3Department of Immunobiology, University of Lausanne, Epalinges, Switzerland 4Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, USA 5Immunology Graduate Group, University of Pennsylvania, Philadelphia, PA, USA 6Children’s Hospital of Philadelphia,...
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