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Journal of Tea Science ›› 2015, Vol. 35 ›› Issue (2): 130-136.doi: 10.13305/j.cnki.jts.2015.02.004

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Review on Pro-oxidative Properties of EGCG on Cell

CHEN Yijun1, XIONG Ligui1, HUANG Jian′an1,2,3, GONG Yushun1,*, LIU Zhonghua1,2,3,*   

  1. 1. Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China;
    2. National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha 410128, China;
    3. Collaborative Innovation Center of Utilization of Functional Ingredients from Botanicals, Hunan Agriculture University, Changsha 410128, China
  • Received:2014-12-18 Revised:2015-02-03 Online:2015-04-15 Published:2019-08-23

Abstract: EGCG, which is the most abundant catechin in tea, has been demonstrated to possess a wide range of biochemical and pharmacological activities. Recent investigations have revealed that EGCG functions as a pro-oxidant. In this review, we discussed the pro-oxidative mechanism of EGCG in cell culture. Auto-oxidation of EGCG, influenced by the media types, dose- and time-dependent of EGCG addition, contents of serum and pH value etc., forms environmental oxidative stress in cell medium. Furthermore, EGCG produce intracellular ROS and mtROS, and trigger the Fenton reaction to create OH- indirectly. In particular, pro-oxidation of EGCG regulate intracellular transcription factors, signalling pathways, and cell surface receptor to exert many biological actions in cell.

Key words: EGCG, pro-oxidative, cell, biological activity, auto-oxidation, reactive oxidative species

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