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- W4366773229 abstract "Several cellular processes during morphogenesis, tissue healing or cancer progression involve epithelial to mesenchymal plasticity that leads to collective motion (plasticity?). Even though a rich variety of EMP programs exist, a major hallmark unifying them is the initial breaking of symmetry that modifies the epithelial phenotype and axis of polarity. During this process, the actin cytoskeleton and cellular junctions are extensively remodelled correlating with the build-up of mechanical forces. As the collective migration proceeds, mechanical forces generated by the actin cytoskeleton align with the direction of migration ensuring an organized and efficient collective cell behaviour, but how forces are regulated during the breaking of symmetry at the onset of EMP remains an unaddressed question. It is known that the polarity complex CRB3/PALS1/PATJ, and in particular, CRB3 regulates the organization of the actin cytoskeleton associated to the apical domain thus pointing at a potential role of CRB3 in controlling mechanical forces. Whether and how CRB3 influences epithelial biomechanics during the epithelial-mesenchymal plasticity remains, however, largely unexplored. Here, we systematically combine mechanical and molecular analyses to show that CRB3 regulates the biomechanical properties of collective epithelial cells during the initial breaking of symmetry of the EMP. CRB3 interacts with ARP2/3 and controls the remodelling of actin throughout the monolayer via the modulation of the Rho-/Rac-GTPase balance. Taken together, our results identified CRB3, a polarity protein, as a regulator of epithelial monolayer mechanics during EMP" @default.
- W4366773229 created "2023-04-25" @default.
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- W4366773229 date "2023-04-21" @default.
- W4366773229 modified "2023-10-09" @default.
- W4366773229 title "CRB3 and ARP2/3 regulate cell biomechanical properties to set epithelial monolayers for collective movement" @default.
- W4366773229 doi "https://doi.org/10.1101/2023.04.18.537332" @default.
- W4366773229 hasPublicationYear "2023" @default.
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