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http://dx.doi.org/10.3746/jkfn.2007.36.8.983

Effect of Epigallocatechin Gallate on Inhibition of Cell Proliferation in MDA-MB-231 Human Breast Cancer Cells  

Hong, Eun-Jung (Dept. of Food Science and Nutrition, Dankook University)
Kim, Woo-Kyung (Institute of Basic Science, Dankook University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.36, no.8, 2007 , pp. 983-988 More about this Journal
Abstract
Epigallocatechin gallate (EGCG), a principal antioxidant derived from green tea, is one of the most extensively investigated chemopreventive phytochemicals. However, the effect of EGCG on proliferation in MDA-MB-231 breast cancer cell is not well known. We investigated the effect of EGCG on protein and mRNA expression related to cell proliferation in MDA-MB-231 human breast cancer cell lines. We cultured MDA-MB-231 cells in the presence of 0, 5, 10 and 20 ${\mu}m$ of EGCG. EGCG significantly inhibited the cancer cell proliferation (p<0.05). In MDA-MB-231 huamn breast cancer cell, EGCG lowered $ErbB_2$ and $ErbB_3$ protein as well as mRNA expression. In addition, protein and mRNA expression of phosphorylated Akt and total Akt were significantly decreased (p<0.05). We suggest that EGCG inhibits cell proliferation through $ErbB_2$, $ErbB_3$ and Akt cell signaling.
Keywords
epigallocatechin gallat; breast cancer; $ErbB_2$; $ErbB_3$; Akt;
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