EWI-2 regulates α3β1 integrin–dependent cell functions on laminin-5

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EWI-2 regulates α3β1 integrin–dependent cell functions on laminin-5

EWI-2, a cell surface immunoglobulin SF protein of unknown function, associates with tetraspanins CD9 and CD81 with high stoichiometry. Overexpression of EWI-2 in A431 epidermoid carcinoma cells did not alter cell adhesion or spreading on laminin-5, and had no effect on reaggregation of cells plated on collagen I (alpha2beta1 integrin ligand). However, on laminin-5 (alpha3beta1 integrin ligand)...

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Laminin 5 regulates polycystic kidney cell proliferation and cyst formation.

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The Rac activator Tiam1 is required for α3β1-mediated laminin-5 deposition, cell spreading, and cell migration

The Rho-like guanosine triphosphatase Rac1 regulates various signaling pathways, including integrin-mediated adhesion and migration of cells. However, the mechanisms by which integrins signal toward Rac are poorly understood. We show that the Rac-specific guanine nucleotide exchange factor Tiam1 (T-lymphoma invasion and metastasis 1) is required for the integrin-mediated laminin (LN)-5 depositi...

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ژورنال

عنوان ژورنال: Journal of Cell Biology

سال: 2003

ISSN: 1540-8140,0021-9525

DOI: 10.1083/jcb.200309113