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- W1994448145 abstract "Cardiotoxin III (CTX III), a basic polypeptide isolated from Naja naja atra venom, has been demonstrated to display anticancer activity. Breast cancer is a highly malignant carcinoma and most deaths of breast cancer are caused by metastasis. In this study, we show that CTX III blocks migration and invasion of MDA-MB-231 breast cancer cells without affecting apoptosis or cell cycle arrest. CTX III caused significant block of Src kinase activity in MDA-MB-231 cells. Moreover, CTX III treatment was correlated with reduced phosphorylation of FAK at Tyr576, 861 and 925 sites, p130(Cas) at Tyr410, and paxillin at Tyr118. CTX III also suppressed the activation of extracellular signal-regulated kinase1/2 and phosphatidylinositol 3-kinase/Akt. Consistent with inhibition of these signaling pathways and invasion, CTX III inhibited the expression of matrix metalloproteinase-9. In addition, Src specific inhibitor PP2 caused a significant decrease in the phosphorylation of FAK, p130(Cas), paxillin, PI3K/Akt, and ERK1/2. Taken together, CTX III significantly inhibited phosphorylation of Src and downstream molecules as well as cell migration and invasion. Our findings provide evidences that CTX III inhibits Src-mediated signaling pathways involved in controlling MDA-MB-231 cell migration and invasion, suggesting that it has therapeutic potential in breast cancer treatment." @default.
- W1994448145 created "2016-06-24" @default.
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- W1994448145 date "2013-11-01" @default.
- W1994448145 modified "2023-10-18" @default.
- W1994448145 title "Inhibition of Src activation with cardiotoxin III blocks migration and invasion of MDA-MB-231 cells" @default.
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- W1994448145 doi "https://doi.org/10.1016/j.toxicon.2013.07.021" @default.
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