期刊
VACCINE
卷 29, 期 4, 页码 778-783出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2010.11.012
关键词
DNA vaccine cocktail; SAG1; ROP2; Immune response; Toxoplasma gondii
资金
- Tarbiat Modares University
Toxoplasma gondii, the pathogen of toxoplasmosis, can infect most mammals and birds. The high incidence and severe or lethal damages of toxoplasmosis clearly indicate the need for the development of a more effective vaccine. We constructed a DNA cocktail, containing plasmids encoding the full-length SAG1 and ROP2 genes of T. gondii and evaluated its immune response and protective efficacy in comparison with single-gene vaccines and control groups. We immunized BALB/c mice intramuscularly three times. DNA cocktail elicited IgG and IFN-gamma, TNF-alpha and IL-2 greater than single-gene plasmids and increased survival time against a lethal challenge with the highly virulent T. gondii RH strain. The current study shows that pc-SAG1+ pc-ROP2 as a cocktail DNA vaccine produces higher Th1 immune response than single-gene plasmids and cocktail DNA is effective to prime an enhanced and balanced specific immunity. (C) 2010 Elsevier Ltd. All rights reserved.
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