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Abstract Title:

A novel anti-cancer effect of genistein: reversal of epithelial mesenchymal transition in prostate cancer cells.

Abstract Source:

Acta Pharmacol Sin. 2008 Sep;29(9):1060-8. PMID: 18718175

Abstract Author(s):

Lin-lin Zhang, Lei Li, Da-peng Wu, Jin-hai Fan, Xiang Li, Kai-jie Wu, Xin-yang Wang, Da-lin He

Abstract:

AIM: The aim of the present study was to investigate whether low dose genistein affects the invasion and epithelial mesenchymal transition (EMT) of prostate cancer (PCa) cells. METHODS: Human PCa cell lines, IA8-ARCaP and LNCaP/ HIF-1a, were used in this study. The cell lines were found to process EMT in our previous study. The PCa cells were treated with increasing concentrations, from 0.1 to 75 micromol/L. Proliferation was assessed with 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide assay. EMT was proven by cell morphological transition and the expression changes of EMT-related markers, which were confirmed by RT-PCR, Western blotting, and indirect immunofluorescence labeling. Transwell invasion assay was used to analyze the invasive potency. RESULTS: The addition of genistein to the medium reduced the IA8-ARCaP and LNCaP/HIF-1a viable cell number in a dose-dependent manner (with increasing concentrations from 15 to 75 micromol/L). Less than 15 micromol/L genistein was selected as the low dose concentration, which did not affect cell proliferation. The treatment of cells with low-dose genistein induced the reversal of EMT, which was confirmed by cell morphological transition and the expression changes of EMT-related markers. The reversal of EMT in the PCa cells by low-dose genistein was in a dose-dependent manner. Moreover, low-dose genistein effectively inhibited invasion of the PCa cells in vitro. CONCLUSION: These results showed that treatment with low-dose genistein may be a potential strategy for the suppression of invasive growth through the reversal of EMT in cancer cells, which justifies the potential use of soybean foods as a practical chemopreventive approach for patients with PCa.

Study Type : In Vitro Study

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Sayer Ji
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