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Virus Res. 2016 Apr 2. pii: S0168-1702(16)30092-2. doi: 10.1016/j.virusres.2016.04.003. [Epub ahead of print]
CRISPR/Cas9 produces anti-hepatitis B virus effect in hepatoma cells and transgenic mouse.Zhu W1, Xie K2, Xu Y2, Wang L2, Chen K2, Zhang L2, Fang J3.
Author information
- 1Laboratory of Molecular Medicine, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China. Electronic address: [email protected].
- 2Laboratory of Molecular Medicine, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
- 3Laboratory of Molecular Medicine, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China. Electronic address: [email protected].
AbstractChronic infection of hepatitis B virus (HBV) is at risk of liver cirrhosis and hepatocellular carcinoma and remains one of the major public health problems worldwide. It is a major barrier of persistence HBV cccDNA under current antiviral therapy as novel strategies of disrupting HBV cccDNA is pressing. The (CRISPR)/Cas9 system is presently emerging in gene editing and we also apply it for targeting and deleting the conserved regions of HBV genome. Two homologous sequences of HBV S and X genes were carried with CRISPR/Cas9 endonuclease to build pCas9 constructs, which may mediate anti-HBV effects of in vitro and in vivo systems in this study. The results showed the better anti-HBV productions by pCas9-2 and without significant differences in between Huh7 and HepG2 cells. CRISPR/Cas9 direct cleavage and mutagenesis were further analyzed of in vitro system. In the M-TgHBV mouse model of HBV, injection of pCas9 constructs by hydrodynamics decreased HBsAg of sera and liver HBcAg. In conclusion, this designed CRISPR/Cas9 system can induce anti-HBV effects and potentially consider as a novel therapeutic agent against chronic HBV infection.
Copyright © 2016. Published by Elsevier B.V.
KEYWORDS: CRISPR/Cas9; HBV; Hydrodynamics; cccDNA
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