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• W1982178124 abstract "In certain instances of developing and adult organism, epithelial cells can change morphology and transform into mesenchymal-like type in order to move through the extracellular matrix. However, because of the multiplicity and complexity of signaling pathways that contribute to these processes, their molecular dissection has remained difficult. By using a pharmacological approach on the rat bladder carcinoma cell line NBT-II dispersion system, we have identified distinct signaling events for adhesion and motility in response to collagen, both activities depending on alpha2beta1 integrin. Treatment of cells with PKC inhibitors markedly impaired initial attachment on collagen without affecting the capacity of cells to move, suggesting that PKC activity is required for initial adhesion strength during cell translocation. Both adhesion and motility were diminished by tyrosine kinase inhibitors herbimycin and tyrphostin whereas tyrosine phosphatase inhibitors amplified cell scattering. The collagen-induced dispersion was insensitive to genistein which we previously showed to abrogate growth factor-induced scattering, thus demonstrating inducer specificity. Finally. Ras inhibitors and expression of a dominant negative form of Ras (N17Ras) while affecting initial cell attachment, did not prevent cell migration, and instead favored the dissociated state on collagen. The specific signaling pathways identified for adhesion and motility should help to understand the sequential processes associated with cell migration." @default.
• W1982178124 created "2016-06-24" @default.
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• W1982178124 date "1999-01-01" @default.
• W1982178124 modified "2023-10-18" @default.
• W1982178124 title "Characterization of the signaling pathways Regulating α2β1 integrin-mediated events by a pharmacological approach" @default.
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• W1982178124 doi "https://doi.org/10.3109/15419069909010799" @default.
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