Therapeutic efficacy of hepatitis B surface antigen-antibodies-recombinant DNA composite in HBsAg transgenic mice

Bo Jian Zheng, Mun Hon Ng, Li Fang He, Xin Yao, Kwok Wah Chan, Kwok Yung Yuen, Yu Mei Wen

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Therapeutic efficacy of HBsAg-anti-HBs-recombinant DNA harboring hepatitis B virus (HBV) S gene complex was compared with three other therapeutic vaccine candidates (recombinant HBsAg, HBsAg complexed to anti-HBs antibodies and naked plasmid DNA encoding the HBV S gene). After four injections at 3-week intervals, the most pronounced decrease of serum HBsAg, the highest titer of anti-HBs response, the highest level of interferon-γ produced by splenocytes and potent cytotoxicity T cell response were observed in the HBsAg-anti HBs-sDNA immunized group. Reduced expression of HBsAg in hepatocytes was also shown. The therapeutic mechanism of HBsAg-anti-HBs-DNA was speculated as modulation of HBsAg presentation via both endogenous and exogenous pathways.

Original languageEnglish
Pages (from-to)4219-4225
Number of pages7
JournalVaccine
Volume19
Issue number30
DOIs
Publication statusPublished - Jul 20 2001
Externally publishedYes

ASJC Scopus Subject Areas

  • Molecular Medicine
  • General Immunology and Microbiology
  • General Veterinary
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

Keywords

  • Hepatitis B virus
  • Immune tolerance
  • Therapeutic vaccine

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