Expression of ENO3 and Its Effect on Sensitivity of Hepatocellular Carcinoma Cells to Oxaliplatin

Abstract

Objective To investigate the expression of ENO3 gene in hepatocellular carcinoma and its effect on the sensitivity of hepatocellular carcinoma cell lines to OXA, and to explore the possible mechanism. Methods qRT-PCR and immunohistochemical analysis were used to detect the expression of ENO3 in 48 pairs of hepatocellular carcinoma tissues and normal liver tissues.Overexpression plasmid was constructed and transfected into MHCC97H and HepG2 cells.The experiments were divided into empty group (Vector group), ENO3 overexpression group (ENO3 group), empty+OXA group (Vector+OXA group) and ENO3 overexpression+OXA group (ENO3+OXA group).The proliferation ability of MHCC97H and HepG2 cells were detected by CCK-8 assay and cell colony formation assay.The apoptosis rate was determined by flow cytometry assay.Protein expressions of Bcl-2, Bax and Caspase-3 were detected by Western blot assay. Results The expression of ENO3 was significantly decreased in hepatocellular carcinoma tissues, compared with normal liver tissues adjacent to the carcinoma.The expression of ENO3 gene in the ENO3 overexpression group was significantly higher than that in the empty group.Compared with the Vector+OXA group, cell viability was decreased, apoptosis rate was increased, Bcl-2 protein expression was decreased, Bax and Caspase-3 protein expression were increased in the ENO3+OXA group. Conclusion The expression of ENO3 is down-regulated in hepatocellular carcinoma tissues, and the overexpression of ENO3 can enhance the sensitivity of hepatocellular carcinoma cell lines to oxaliplatin by promoting cell apoptosis.

Keywords

• eno3
• oxaliplatin
• hepatocellular carcinoma
• apoptosis