Strain-dependent antibody response induced by DNA immunization

被引:16
作者
Ito, K [1 ]
Takeuchi, Y [1 ]
Ito, K [1 ]
Kato, S [1 ]
机构
[1] Sagami Chem Res Ctr, JST, ERATO, Kato Cytoprot Network Project, Sagamihara, Kanagawa 2290012, Japan
关键词
plasmid DNA; DNA immunization; H-2; complex; antibody production;
D O I
10.1016/S0165-2478(00)00266-2
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
The antibody (Ab) response induced by DNA-based immunization was compared in various strains of inbred, H-2 congenic and outbred mice with different haplotypes of mouse major histocompatibility complex (H-2). Two different plasmid expression vectors encoding Aequorea victor ia green fluorescent protein (GFP) or Escherichia coli, beta -galactosidase (beta -gal) were introduced into quadriceps muscle, and Ab production was examined using both enzyme-linked immunosorbent assay and immunoblot analysis. The beta -gal plasmid DNA immunization induced strong Ab production in all inbred, H-2 congenic and outbred strains at the early stages of immunization. By comparison with beta -gal peptide immunization, the degree of Ab response was H-2 haplotype-dependent. On the other hand, Ab production by GFP plasmid DNA immunization was observed in outbred strains, but not in some of the inbred and H-2 congenic strains. Also, outbred strains showed a high Ab response compared with other inbred and H-3 congenic strains by GFP peptide immunization. Reverse transcription-polymerase chain reaction analysis demonstrated the presence of GFP or beta -gal transcripts at the DNA inoculation site in all the strains studied, even in inbred and H-2 congenic strains which showed no Ab production by GFP plasmid DNA immunization. These results indicate that the difference in Ab response induced by DNA immunization as well as by peptide immunization depends upon the H-2 haplotypes of host strains. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:245 / 250
页数:6
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