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- W2201926879 abstract "Integrins regulate adhesion-dependent growth, survival and invasion of tumor cells. In particular, expression of integrin αvβ3 is associated with progression of a variety of human tumors. Here we reveal a previously undescribed adhesion-independent role for integrin αvβ3 in pancreatic cancer and other carcinomas. Specifically, αvβ3 expressed in carcinoma cells enhanced anchorage-independent tumor growth in vitro and increased lymph node metastases in vivo. These effects required recruitment of c-Src to the β3 integrin cytoplasmic tail, leading to c-Src activation, Crk-associated substrate (CAS) phosphorylation and tumor cell survival that, unexpectedly, was independent of cell adhesion or focal adhesion kinase (FAK) activation. Pharmacological blockade of c-Src kinase activity or decreased expression of endogenous αvβ3 integrin or c-Src not only inhibited anchorage-independent growth but also suppressed metastasis in vivo, yet these manipulations did not affect tumor cell migration or invasion. These data define an unexpected role for an integrin as a mediator of anchorage independence, suggesting that an αvβ3–c-Src signaling module may account for the aggressive behavior of integrin αvβ3–expressing tumors in humans." @default.
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- W2201926879 date "2009-09-06" @default.
- W2201926879 modified "2023-09-29" @default.
- W2201926879 title "An integrin αvβ3–c-Src oncogenic unit promotes anchorage-independence and tumor progression" @default.
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- W2201926879 doi "https://doi.org/10.1038/nm.2009" @default.
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