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- W2138341116 abstract "G protein-coupled receptor ligand-dependent transactivation of growth factor receptors has been implicated in human cancer cell proliferation, migration, and cell survival. For example, prostaglandin E(2) (PGE(2))-induced transactivation of the EGF receptor (EGFR) in colorectal carcinoma cells is mediated by means of a c-Src-dependent mechanism and regulates cell proliferation and migration. Recent evidence indicates that beta-arrestin 1 may act as an important mediator in G protein-coupled receptor-induced activation of c-Src. Whether beta-arrestin 1 serves a functional role in these events is, however, unknown. We investigated the effects of PGE(2) on colorectal cancer cells expressing WT and mutant beta-arrestin 1. Here we report that PGE(2) induces the association of a prostaglandin E receptor 4/beta-arrestin 1/c-Src signaling complex resulting in the transactivation of the EGFR and downstream Akt (PKB) signaling. The interaction of beta-arrestin 1 and c-Src is critical for the regulation of colorectal carcinoma cell migration in vitro as well as metastatic spread of disease to the liver in vivo. These results show that the prostaglandin E/beta-arrestin 1/c-Src signaling complex is a crucial step in PGE(2)-mediated transactivation of the EGFR and may play a pivotal role in tumor metastasis. Furthermore, our data implicate a functional role for beta-arrestin 1 as a mediator of cellular migration and metastasis." @default.
- W2138341116 created "2016-06-24" @default.
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- W2138341116 date "2006-01-23" @default.
- W2138341116 modified "2023-10-06" @default.
- W2138341116 title "Role of β-arrestin 1 in the metastatic progression of colorectal cancer" @default.
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- W2138341116 doi "https://doi.org/10.1073/pnas.0510562103" @default.
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