Proposed role of Vav3 in formation of the macrophage phagocytic synapse and its implications in wound regeneration. Based on the study by Sindrilaru et al, Vav3 stimulates a bidirectional signal to control (1) the avidity of CD18/β2 integrin toward ICAM on the apoptotic cell, and (2) the β2-integrin activation of Rac1 to stimulate phagocytosis and activate the NADPH complex that generates reactive oxygen species to activate latent TGF-β. Active TGF-β, in turn, coordinates a response within the microenvironment by acting on multiple cells, including macrophages, myofibroblasts, and endothelial cells that control wound healing.

Proposed role of Vav3 in formation of the macrophage phagocytic synapse and its implications in wound regeneration. Based on the study by Sindrilaru et al, Vav3 stimulates a bidirectional signal to control (1) the avidity of CD18/β2 integrin toward ICAM on the apoptotic cell, and (2) the β2-integrin activation of Rac1 to stimulate phagocytosis and activate the NADPH complex that generates reactive oxygen species to activate latent TGF-β. Active TGF-β, in turn, coordinates a response within the microenvironment by acting on multiple cells, including macrophages, myofibroblasts, and endothelial cells that control wound healing.

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