[Impact of different adjuvants on immunogenicity of the HBV particle vaccine containing the S + preS1 fusion antigen in Balb/C mice].

Abstract

We previous reported the development of novel hepatitis B virus(HBV) vaccine containing the surface antigen(S) plus PreS1 fusion derived from Chinese hamster ovary (CHO) cells system. In this study, we analyzed the impact of different adjuvants on immunogenicity of the HBV particle vaccine in Balb/C mice, including alum alone, CpG oligodeoxynucleotides (CpG-ODN) alone and CpG-ODN in combination with alum adjuvant. We first detected the antigen specific humoral response in mice, including total IgG antibody and IgG subtyping. Then, we characterized the specific cell-mediated immune (CMI) response by detection of gamma-interferon secreting splenocytes after stimulating with S or PreS1 peptide pool. Our results showed that: CpG-ODN adjuvanted vaccine could rapidly induce higher level of anti-PreS 1 and anti-S antibodies, and a higher ratio of IgG2a/IgG1 antibody than that of alum adjuvanted vaccine. At the same time, CpG-ODN adjuvanted vaccine induced robust antigen-specific cellular immune responses in mice, which was superior to that of alum adjuvanted vaccine and CpG-ODN in combination with alum adjuvanted vaccine; however, the vaccine candidate with CpG-ODN in combination with alum adjuvant induced highest anti-S antibody and mixed IgG subclasses in mice after twice immunization. There exists dominant HBV CMI epitopes in the N-terminal of S antigen. These results provided important evidence that CpG-ODN adjuvanted HBSS1 particles vaccine may serve as a novel candidate in the development of new preventive and therapeutic agents against hepatitis B infection.

• Authors: Hong Chen, Yao Deng, Wenjie Tan, Wen Wang, Xiao Yin, Jie Guan, Wenling Wang, Li Ruan
• Journal: Sheng wu gong cheng xue bao = Chinese journal of biotechnology (Sheng Wu Gong Cheng Xue Bao) Vol. 26 Issue 1 Pg. 74-8 (Jan 2010) ISSN: 1000-3061 [Print] China
• PMID: 20353095 (Publication Type: English Abstract, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Adjuvants, Immunologic
• CPG-oligonucleotide
• Hepatitis B Surface Antigens
• Hepatitis B Vaccines
• Oligodeoxyribonucleotides
• Protein Precursors
• Recombinant Fusion Proteins
• Vaccines, Synthetic
• presurface protein 1, hepatitis B surface antigen

Topics

• Adjuvants, Immunologic (pharmacology)
• Animals
• CHO Cells
• Cricetinae
• Cricetulus
• Female
• Hepatitis B Surface Antigens (biosynthesis, genetics, immunology)
• Hepatitis B Vaccines (biosynthesis, immunology)
• Immunization
• Mice
• Mice, Inbred BALB C
• Oligodeoxyribonucleotides (immunology)
• Protein Precursors (biosynthesis, genetics, immunology)
• Recombinant Fusion Proteins (biosynthesis, genetics, immunology)
• Vaccines, Synthetic (biosynthesis, immunology)