Effect of Natural Compounds on Catechol Estrogen-Induced Carcinogenesis

다국어 초록 (Multilingual Abstract)

The hydroxylation of estradiol results in the formation of catechol estrogens such as 2-hydroxyestradiol (2-OHE2) and 4-hydroxyestradiol (4-OHE2). These catechol estrogens are further oxidized to quinone metabolites by peroxidases or cytochrome P450 (CYP450) enzymes. Catechol estrogens contribute to hormone-induced carcinogenesis by generating DNA adducts or reactive oxygen species (ROS). Interestingly, many of the natural products found in living organisms have been reported to show protective effects against carcinogenesis induced by catechol estrogens. Although some compounds have been reported to increase the activity of catechol estrogens via oxidation to quinone metabolites, many natural products decreased the activity of catechol estrogens by inhibiting DNA adduct formation, ROS production, or oxidative cell damage. Here we focus specifically on the chemopreventive effects of these natural compounds against carcinogenesis induced by catechol estrogens.

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