ZO-1 shuttles between tight junctions and podosomes by riding ERK activation waves during collective cell migration
Hirano, S.; Kondo, Y.; Kinoshita, N.; Otani, T.; Furuse, M.; Ueno, N.; Aoki, K.
Show abstract
Collective cell migration is essential in various physiological processes, including embryonic development, wound healing, and cancer metastasis. However, the mechanisms by which individual cells achieve coordinated movement remain elusive. Here, we demonstrate that zonula occludens-1 (ZO-1), a scaffolding protein of tight junctions (TJs), dynamically translocates to form cell-to- extracellular matrix (ECM) adhesion complexes, podosomes, at the basal cell surface during migration. The translocation of ZO-1 is regulated by extracellular signal-regulated kinase (ERK) activity and its interaction with F-actin. ZO-1 at podosomes contributes to traction force generation and cell invasion, while ZO-1 at TJs mediates intercellular propagation of ERK activation, facilitating collective cell migration. These findings elucidate the versatile roles of ZO-1 in cell adhesion and movement, providing insights into the mechanisms coordinating the discrete movements of individual cells into a cohesive and directed collective cell migration.
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