关键词: NS5A基因, 肝炎病毒, 丙型

Abstract: To construct an eukaryotic expression vector of the hepatitis C virus（HCV）NS5A gene. and obtain a stable transfected Huh-7 cell line which provides a basis for further investigation of the hepatitis virus C NS5A protein. Methods The HCV NS5A gene from the pcDNA3.1(+)/HCV NS345 plasmid with HCV NS5A gene was amplified by PCR， and cloned to pGEM-T vector，and transformed into E. coli JM109.The positive colonies were first confirmed by restriction enzyme digestion and sequencing and then were inserted to eukaryotic expression vector pCI-neo，and verified by enzyme digestion and sequencing. Results After TA colon of the HCV NS5A was amplified by PCR，the positive colonies were finally verified by sequencing, which were totally in line with the designed coding sequence of HCV NS5A gene.Conclusion Eukaryotic expression vector of HCV NS5A gene has been successfully constructed.

Key words: HCV NS5A gene, hepatitis C virus