Abstract
Hepatocarcinoma is the third leading cause of cancer-related deaths around the world. Recently, some studies have reported that Epigallocatechin-3-gallate (EGCG) may have the anti-cancer potential. However, the affection and putative mechanisms of cytotoxicity induced by EGCG in HepG2 cells remain unknown. Based on the above, the present study evaluated the effect of EGCG on the cytotoxic and anti-cancer mechanisms of HepG2 cells. The effect of EGCG on the apoptosis of Hep-G2 cells and its mechanism were studied by cell counting kit-8, mitochondrial membrane potential assay with JC-1, Annexin V-FITC apoptosis detection, cell cycle, and apoptosis analysis, one step TUNEL apoptosis assay, caspase 3 activity assay, caspase 9 activity Assay, Reactive Oxygen Species assay, and Western blot. EGCG-induced HepG2 cell apoptosis was confirmed by accumulation of the sub-G1 cells population, translocation of phosphatidylserine, depletion of mitochondrial membrane potential, DNA fragmentation, caspase-3 activation, caspase-9 activation, and poly (ADP-ribose) polymerase cleavage. Furthermore, EGCG enhanced cytotoxic effects on HepG2 cells and triggered intracellular reactive oxygen species; the signaling pathways of AKT, JNK, and p53 were activated to advance cell apoptosis. The results reveal that EGCG may provide useful information on EGCG-induced HepG2 cell apoptosis and be an appropriate candidate for cancer chemotherapy.
Published Version
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