RT Journal Article SR Electronic T1 Tanshinone functions as a coenzyme that confers gain of function of NQO1 to suppress ferroptosis JF Life Science Alliance JO Life Sci. Alliance FD Life Science Alliance LLC SP e202201667 DO 10.26508/lsa.202201667 VO 6 IS 1 A1 Wang, Tian-Xiang A1 Duan, Kun-Long A1 Huang, Zi-Xuan A1 Xue, Zi-An A1 Liang, Jun-Yun A1 Dang, Yongjun A1 Zhang, Ao A1 Xiong, Yue A1 Ding, Chunyong A1 Guan, Kun-Liang A1 Yuan, Hai-Xin YR 2023 UL https://www.life-science-alliance.org/content/6/1/e202201667.abstract AB Ferroptosis is triggered by the breakdown of cellular iron-dependent redox homeostasis and the abnormal accumulation of lipid ROS. Cells have evolved defense mechanisms to prevent lipid ROS accumulation and ferroptosis. Using a library of more than 4,000 bioactive compounds, we show that tanshinone from Salvia miltiorrhiza (Danshen) has very potent inhibitory activity against ferroptosis. Mechanistically, we found that tanshinone functions as a coenzyme for NAD(P)H:quinone oxidoreductase 1 (NQO1), which detoxifies lipid peroxyl radicals and inhibits ferroptosis both in vitro and in vivo. Although NQO1 is recognized as an oxidative stress response gene, it does not appear to have a direct role in ferroptosis inhibition in the absence of tanshinone. Here, we demonstrate a gain of function of NQO1 induced by tanshinone, which is a novel mechanism for ferroptosis inhibition. Using mouse models of acute liver injury and ischemia/reperfusion heart injury, we observed that tanshinone displays protective effects in both the liver and the heart in a manner dependent on NQO1. Our results link the clinical use of tanshinone to its activity in ferroptosis inhibition.