Vaccination of chickens with DNA vaccine expressing Eimeria tenella MZ5-7 against coccidiosis

被引:32
作者
Geriletu [1 ]
Xu, Lixin [1 ]
Xurihua [2 ]
Li, Xiangrui [1 ]
机构
[1] Nanjing Agr Univ, Coll Vet Med, Nanjing 210095, Peoples R China
[2] Inner Mongolia Agr Univ, Coll Vet Med, Hohhot 010018, Inner Mongolia, Peoples R China
关键词
Eimeria tenella; MZ5-7; DNA vaccine; IL17; Chicken; PROTECTIVE IMMUNITY; INTERFERON-GAMMA; INTERLEUKIN-17; FAMILY; RESPONSES; ANTIGEN; IMMUNIZATION; STRATEGIES; INFECTION; CYTOKINES; ANTIBODY;
D O I
10.1016/j.vetpar.2010.11.041
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
A chimeric DNA vaccine co-expressing Eimeria tenella MZ5-7 and chicken IL-17 gene was constructed and its efficacy against E. tenella challenge was evaluated. The ORF of MZ5-7 from E. tenella's second generation merozoite and the mature interleukin 17 gene of chicken were cloned into the expression vector of pcDNA4.0 to construct DNA vaccine pcDNA4.0-MZ and pcDNA4.0-MZ-IL17. The expression of aim gene products in vivo was detected by western blotting. The expression of IL-2 and IFN-gamma in chicken splenocytes was detected by RT-PCR 7 days post-immunization. The expression levels of the two cytokines in the pcDNA4.0-MZ-IL17 DNA vaccine immunized group were significantly higher than that in the pcDNA4.0-MZ immunized group (p < 0.05). Either pcDNA4.0-MZ or pcDNA4.0-MZ-IL17 DNA vaccine could obviously alleviate cecal lesions, body weight loss and increase oocyst decrease ratio. The ACI of pcDNA4.0-MZ-IL17 group was 190, which is higher than that of pcDNA4.0-MZ group and all the three control groups. In short, MZ5-7 was an effective candidate antigen for vaccine and co-expression of cytokine with antigen was an alternative method to enhance the immunity DNA vaccine. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:6 / 12
页数:7
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