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Involvement of microRNA modifications in anticancer effects of major polyphenols from green tea, coffee, wine, and curry

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CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
卷 63, 期 24, 页码 7148-7179

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TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2022.2038540

关键词

microRNA; anticancer effects; chlorogenic acid; curcumin; epigallocatechin gallate; resveratrol

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Epidemiological studies have shown that consumption of green tea, coffee, wine, and curry may reduce the risk of various cancers, although the effects can differ depending on the specific cancer site. Compounds found in these foods, such as chlorogenic acid, curcumin, epigallocatechin gallate, and resveratrol, can act as antioxidants or prooxidants to modulate reactive oxygen species (ROS) and miRNA expression, thereby exerting anticancer effects.
Epidemiological studies have shown that consumption of green tea, coffee, wine, and curry may contribute to a reduced risk of various cancers. However, there are some cancer site-specific differences in their effects; for example, the consumption of tea or wine may reduce bladder cancer risk, whereas coffee consumption may increase the risk. Animal and cell-based experiments have been used to elucidate the anticancer mechanisms of these compounds, with reactive oxygen species (ROS)-based mechanisms emerging as likely candidates. Chlorogenic acid (CGA), curcumin (CUR), epigallocatechin gallate (EGCG), and resveratrol (RSV) can act as antioxidants that activate AMP-activated protein kinase (AMPK) to downregulate ROS, and as prooxidants to generate ROS, leading to the downregulation of NF-kappa B. Polyphenols can modulate miRNA (miR) expression, with these dietary polyphenols shown to downregulate tumor-promoting miR-21. CUR, EGCG, and RSV can upregulate tumor-suppressing miR-16, 34a, 145, and 200c, but downregulate tumor-promoting miR-25a. CGA, EGCG, and RSV downregulate tumor-suppressing miR-20a, 93, and 106b. The effects of miRs may combine with ROS-mediated pathways, enhancing the anticancer effects of these polyphenols. More precise analysis is needed to determine how the different modulations of miRs by polyphenols relate to the cancer site-specific differences found in epidemiological studies related to the consumption of foods containing these polyphenols.

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