ZERUMBONE (ZER) INDUCES APOPTOSIS IN HEPG2 CELLS VIA MITOCHONDRIAL PATHWAY
Keywords:
Zerumbone, HepG2, Apoptosis, Caspase-3, Caspase-9Abstract
Objective: The aim of the study is to determine the anti-cancer effect of ZER on the human hepatocellular carcinoma (HepG2) cell line.
Methods: The anti-cancer mechanisms investigated were apoptosis and anti-proliferation. The assays used in the in vitro study were 3-4-5-dimethylthiazol-2-yl-2, 5-diphenyltetrazolium bromide (MTT), annexin V and acridine orange/propidium iodide staining, and cell cycle analysis to determine apoptosis. Colorimetric assays were employed for caspase-3 and 9 determinations. The morphological changes were determined by scanning electron microscopy.
Results: Zerumbone inhibited the proliferation of HepG2 cells in a dose-dependent manner and induced cell cycle arrest at the G2/M phase and apoptosis, shown by chromatin condensation, cell shrinkage and formation of apoptotic bodies, in the HepG2 cells in a time-dependent manner. Zerumbone also stimulated caspase-3 and-9 activities in the HepG2 cells.
Conclusions: This study suggests that the induction of apoptosis of ZER on HepG2 was via the mitochondrial pathway.
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