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Title: [Stable expression of HBV C gene mutants in immortalized human B-cell lines]. Author: Zhang MX, Zhou FY, Diao ZH, He HT, Hou JL, Luo KX. Journal: Nan Fang Yi Ke Da Xue Xue Bao; 2006 Jun; 26(6):725-9. PubMed ID: 16793585. Abstract: OBJECTIVE: To provide an cell model of immortalized lymphoblstoid B-cell lines for studying the biological characteristics of full-length hepatitis B virus (HBV) genome carrying the hot-spot mutations V60, G87, and L97. METHODS: V60, G87, and L97 mutation points were introduced into HBV p3.8 II plasmid containing 1.2 copy of HBV genome by means of site-directed mutagenesis. The HBV genome was amplified by PCR from p3.8 II and p3.8 II-V60, G87, L97 plasmid, and the PCR product was inserted into EBO-plpp eukaryotic expression vector. The recombinant vectors and the EBO-plpp vector were transfected into immortalized human lymphoblasts with lipofectamine 2000 and selected with hygromycin. Steady expression of the target genes was determined by RT-PCR, Western blotting and microparticle enzyme immunoassay. RESULTS: DNA sequence analysis indicated that the desired mutation was introduced into wild-type HBV DNA. HBsAg, HBeAg and HBcAg could be detected in EBO-HBV-transfected cell lysate or culture supernatant. CONCLUSION: Transfectants that stably express HBV mutant antigen may provide a cell model to study the biological characteristics of HBV carrying hot-spot mutation in vitro.[Abstract] [Full Text] [Related] [New Search]