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Cancer Lett. 2002 Feb 8;176(1):17-23.

Effect of flavonoids on cell cycle progression in prostate cancer cells.

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Department of Biochemistry, Yamagata University School of Medicine, Yamagata 990-9585, Japan.


The effect of some flavonoids, which are components of fruits, vegetables, and peas, on the cell cycle progression of human LNCaP prostate cancer cells has been investigated in this study. Genistein arrested the cell cycle at the G2/M phases, which is attributed to the suppression of cyclin B expression. In addition, genistein induced the cyclin-dependent kinase inhibitor p21, which does not depend on p53 activation. Apigenin and luteolin also increased p21 levels, but quercetin did not. Apigenin induced p21 production through a p53-dependent pathway, but luteolin did so in a p53-independent manner. These results suggest that flavonoids are potent regulators of cyclin B and p21 for cell cycle progression, which may play some roles in prevention of carcinogenesis.

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