Mitochondria-dependent Mechanisms Involved in HepG2 cell Apoptosis Induced by Uncarinic Acid E
Ming Zhao
Abstract
Ming Zhao
Abstract
Aim To study the mechanisms of uncarinic acid E-induced HepG2 cell apoptosis. Methods Cytotoxicity assay by MTT, observasion of morphology, LDH release and Western blot analysis were carried out. Results Uncarinic acid E inhibited HepG2 cell growth in a dose- and time-dependent manner, and did not show inhibitory action on marrow in mice in vitro. Apoptotic bodies were observed in Hoechst33258 fluorescein stain. LDH assay proved that apoptosis and necrosis undertook simultaneously in death of HepG2 cell treated with uncarinic acid E. Up-regulation of Bax and down-regulation of Bcl-2 and Bcl-xL expression contributed to uncarinic acid E induced HepG2 cell apoptosis, and led to release of cytochrome c. Conclusion Mitochondria-dependent signal transduction pathways are involved in uncarinic acid E-induced HepG2 cell apoptosis.
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Aim To study the mechanisms of uncarinic acid E-induced HepG2 cell apoptosis. Methods Cytotoxicity assay by MTT, observasion of morphology, LDH release and Western blot analysis were carried out. Results Uncarinic acid E inhibited HepG2 cell growth in a dose- and time-dependent manner, and did not show inhibitory action on marrow in mice in vitro. Apoptotic bodies were observed in Hoechst33258 fluorescein stain. LDH assay proved that apoptosis and necrosis undertook simultaneously in death of HepG2 cell treated with uncarinic acid E. Up-regulation of Bax and down-regulation of Bcl-2 and Bcl-xL expression contributed to uncarinic acid E induced HepG2 cell apoptosis, and led to release of cytochrome c. Conclusion Mitochondria-dependent signal transduction pathways are involved in uncarinic acid E-induced HepG2 cell apoptosis.
Key concepts: Apoptosis, Cytochrome c, Cell biology, Programmed cell death, Mitochondrion, Cell, Cytotoxicity, Molecular biology