MicroRNA-based regulatory mechanisms underlying the synergistic antioxidant action of quercetin and catechin in H2O2 -stimulated HepG2 cells: Roles of BACH1 in Nrf2-dependent pathways
文献类型： 外文期刊
作者： Wang, Dan 1 ; Jiang, Yang 1 ; Sun-Waterhouse, Dong-Xiao 1 ; Zhai, Hao 2 ; Guan, Hui 1 ; Rong, Xue 1 ; Li, Feng 1 ; Yu, Ji 1 ;
作者机构： 1.Shandong Agr Univ, Coll Food Sci & Engn, Key Lab Food Proc Technol & Qual Control Shandong, Tai An, Shandong, Peoples R China
2.Shandong Inst Pomol, Tai An, Shandong, Peoples R China
3.Univ Auckland, Sch Chem Sci, Auckland, New Zealand
关键词： Quercetin; Catechin; Synergy; MicroRNAs; Oxidative stress
期刊名称：FREE RADICAL BIOLOGY AND MEDICINE （ 影响因子：7.376； 五年影响因子：7.934 ）
ISSN： 0891-5849
年卷期： 2020 年 153 卷
页码：
收录情况： SCI
摘要： The microRNA-based mechanisms underlying the antioxidant action(s) of co-existing flavonoids in response to oxidative stress are of high interest. This study aimed to extend the existing knowledge and provide insights into the potential regulatory network in response to oxidative stress and the co-presence of quercetin and catechin antioxidants, via a preclinical approach using H2O2-stimulated HepG2 cells. It was confirmed that BACH1 serves as an essential and direct negative regulator of the Keap1-Nrf2 signaling pathway and the antioxidant synergism between quercetin and catechin. BACH1 promoted reactive oxygen species (ROS) accumulation while inhibiting cell growth, which could be reversed by the synergistic action of let-7a-5p and miR-25-3p in the co-presence of quercetin and catechin. Both let-7a-5p and miR-25-3p could directly regulate the expression and function of BACH1 (e.g. upregulation of the two miRNAs could rescue largely overexpression of BACH1). Although these molecular interactions likely represented only some aspects of the overall regulatory network, this research confirms the feasibility of the combined uses of dietary flavonoids with chemopreventive properties in synergy during multiple-target interactions and multiple-pathway regulation.
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