Zhang M, Wu X, Lai F, Zhang X, Wu H, Min T. Betaine Inhibits Hepatitis B Virus with an Advantage of Decreasing Resistance to Lamivudine and Interferon α.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016;
64:4068-4077. [PMID:
27144395 DOI:
10.1021/acs.jafc.6b01180]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Betaine (BET) is a native compound known for its ability to protect the liver from toxicants. However, few studies have examined the effects of BET on the most common cause of liver disease, hepatitis B virus (HBV). In this study, the anti-HBV activity of BET was assessed in vitro and in vivo using enzyme-linked immunosorbent assay, quantitative polymerase chain reaction, and Southern blotting. The resistance of HBV to lamivudine and interferon α is challenging in the clinical treatment of HBV. The effect of BET on resistance was also investigated. The results showed that the secretion of HBsAg (HBV surface antigen), HbeAg (HBV e antigen), and HBV DNA in HepG2.2.15 cells was significantly decreased by BET via suppression of GRP78 expression. In duck HBV (DHBV)-infected ducklings, 1.0 or 2.0 g/kg BET significantly reduced serum DHBV DNA, and DHBV DNA did not rebound after the 5 day withdrawal period. BET suppressed HBV DNA rebound produced by the resistance of HBV to lamivudine and decreased the resistance mutation (rtM204V/I) of HBV DNA. Supplementation of BET may improve the anti-HBV effect of interferon α by increasing the expression of antiviral dsRNA-dependent protein kinase induced by the JAK-STAT (JAK = Janus kinase; STAT = signal transducer and activator of transcription) signaling pathway. These results may provide useful information for the clinical application of BET and solution of HBV drug resistance in anti-HBV therapy.
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