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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cancer+Res 2016 ; 76 (6): 1451-62 Nephropedia Template TP
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AKT1 inhibits epithelial-to-mesenchymal transition in breast cancer through phosphorylation-dependent Twist1 degradation #MMPMID26759241
Li CW; Xia W; Lim SO; Hsu JL; Huo L; Wu Y; Li LY; Lai CC; Chang SS; Hsu YH; Sun HL; Kim J; Yamaguchi H; Lee DF; Wang H; Wang Y; Chou CK; Hsu JM; Lai YJ; LaBaff AM; Ding Q; Ko HW; Tsai FJ; Tsai CH; Hortobagyi GN; Hung MC
Cancer Res 2016[Mar]; 76 (6): 1451-62 PMID26759241show ga
Epithelial-to-mesenchymal transition (EMT) is an essential physiological process that promotes cancer cell migration, invasion, and metastasis. Several lines of evidence from both cellular and genetic studies suggest that AKT1/PKB?, but not AKT2 or AKT3, serves as a negative regulator of EMT and breast cancer metastasis. However, the underlying mechanism by which AKT1 suppresses EMT remains poorly defined. Here, we demonstrate that phosphorylation of Twist1 by AKT1 is required for ?-TrCP-mediated Twist1 ubiquitination and degradation. The clinically used AKT inhibitor MK-2206, which possesses higher specificity toward AKT1, stabilized Twist1 and enhanced EMT in breast cancer cells. However, we discovered that resveratrol, a naturally occurring compound, induced ?-TrCP-mediated Twist1 degradation to attenuate MK-2206-induced EMT in breast cancer cells. Taken together, our findings demonstrate that resveratrol counteracts the unexpected metastatic potential induced by anti-AKT therapy, and therefore suggest that the addition of resveratrol to an anti-AKT therapeutic regimen may provide extra support for limiting EMT.