“…The primary mechanism is thought to be Nrf2-mediated induction of carcinogen detoxifying/antioxidant enzymes that stimulate neutralization/removal of carcinogens and their reactive metabolites or potentiate the physiologic defense against oxidative DNA damage(Houghton, Fassett, & Coombes, 2016;James et al, 2012;Russo et al, 2018;Yang, L., Palliyaguru, D. L., & Kensler, 2016). However, other mechanisms have been identified, and the list is expanding to the level covering almost all processes of multistage carcinogenesis(Ferreira et al, 2018;Houghton, 2019;Juge, Mithen, & Traka, 2007;Kamal, M., Akter, S., Lin, C.-N., & Nazzal, 2020;Leone et al, 2017). Besides its effects on the signal transduction mediated by oncogens or tumor suppressor genes, epigenetic regulation is also of importance in cancer chemoprevention with sulforaphane(Atwell et al, 2015;Tortorella, Royce, Licciardi, & Karagiannis, 2015).…”