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KMID : 0613820120220070964
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Journal of Life Science
2012 Volume.22 No. 7 p.964 ~ p.969
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Genistein Suppresses TPA-Induced Matrix Metalloproteinases Activity and Cell Invasion in Human Breast Adenocarcinoma Cells
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Choi Yung-Hyun
Kim Sung-Ok
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Abstract
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Genistein, a predominant isoflavone, has been shown to inhibit the growth of various cancer cells in vitro and in vivo without toxicity to normal cells. In the present study, we investigated the effects of genistein on the activity and the expression of matrix metalloproteinases (MMPs) in MCF-7 and MDA-MB-231 human breast adenocarcinoma cells. Our findings showed that MMP-9 and -2 activation was significantly increased in response to 12-O-tetradecanoyl phorbol-13-acetate (TPA). However, the increased activities of MMP-9 and -2 in TPA-treated cells were concentration-dependently inhibited by treatment with genistein, and this was also correlated with a decrease in the expression of their mRNA and proteins. In addition, a matrigel invasion assay showed that genistein reduced TPA-induced invasion of MCF-7 and MDA-MB-231 cells. Although further in vivo studies are needed, these results suggest that genistein treatment may inhibit tumor cell invasion and, therefore, act as a dietary source to decrease the risk of cancer metastasis.
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KEYWORD
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Genistein, breast cancer, 12-O-tetradecanoyl phorbol-13-acetate (TPA), matrix metalloproteinases (MMPs), invasion
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