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Updated: Aug 7, 2026
Modeling Hepatitis B Virus Infection in Non-Hepatic 293T-NE-3NRs Cells
Published on: June 5, 2020
[Stable expression of HBV C gene mutants in immortalized human B-cell lines]
Ming-xia Zhang1, Fu-yuan Zhou, Zhi-hong Diao
1Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. zhangmx@fimmu.com
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.
