Abstract
Migration is a complex process in which cells move in a given direction either in response to changes in the extracellular environment or as a consequence of an intrinsic propensity for directional movement. Migration plays key roles in many physiological and pathological processes, including development, angiogenesis, tissue regeneration and metastasis. An important role in migration is played by caveolin-1 and caveolae. Caveolae compartmentalize intracellular signalling pathways to orchestrate cell migration. Caveolin-1 presents a polarized distribution in migrating cells and is linked to the cytoskeleton, and changes in its expression modulate migration. Although there are some discrepancies regarding the regulatory effect of caveolin-1, most studies show that it promotes cell movement and polarity. The importance of caveolin-1 has recently been reinforced by studies with Cav1 −/− cells, which indicate that it establishes polarity during directional migration by coordinating Src kinase and Rho GTPase signalling.
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