Immune response and protection elicited by DNA immunisation against Taenia cysticercosis

被引:34
作者
Wang, QM [1 ]
Sun, SH [1 ]
Hu, ZL [1 ]
Wu, D [1 ]
Wang, ZC [1 ]
机构
[1] Second Mil Med Univ, Dept Med Genet, Shanghai 200433, Peoples R China
关键词
DNA vaccine; cysticercosis; apoptosis;
D O I
10.1016/S0264-410X(02)00661-8
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 study evaluated DNA vaccination in Taenia solium cysticercosis prevention by using cDNA of an antigen (cC1) from T solium metacestode. pcDNA3-cC1 DNA vaccine was constructed by inserting the cDNA into the eukaryotic expression plasmid pcDNA3. Positive expression of the pcDNA3-cC1 product was confirmed by its transfection into COS7 cell and enzyme-linked immunoabsorbent assay using serum of pigs infected with T solium metacestode. Immunisation of BALB/c mice with three injections of pcDNA3-cC1 induced antigen-specific immune responses of the Thl phenotype. Inoculation of new-born pigs induced protection against challenge with T solium by 73.3% reduction of the metacestode number. Antibodies elicited by DNA immunisation with pcDNA3-cC1 specifically reacted with native cC1 protein, which was mainly restricted to the cyst wall of T solium metacestode. Positive apoptosis signals were also detected in the cyst wall cells of metacestode slices from pigs immunised with pcDNA3-cC1 by TUNEL staining method. Those suggested that apoptosis played a role in protecting pigs immunised with pcDNA3-cC1 nucleic acid vaccine from pathogen challenge. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1672 / 1680
页数:9
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