期刊
INFECTION AND IMMUNITY
卷 68, 期 9, 页码 4986-4991出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/IAI.68.9.4986-4991.2000
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资金
- NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES [R01AI032719] Funding Source: NIH RePORTER
- NIAID NIH HHS [R01 AI032719, R01 AI32719] Funding Source: Medline
A complement regulatory protein (CRP) of Trypanosoma cruzi was evaluated as a vaccine candidate in a murine model of experimental T. cruzi infection. Recombinant CRP derived from an Escherichia coli expression system and a plasmid encoding the full-length crp structural gene under the control of a eukaryotic promoter were used to immunize BALB/c mite. Immunization with both protein and DNA vaccines resulted in a Th1-type T-cell response, comparable antibody titers, and similar immunoglobulin G isotype profiles. Only mice immunized with the crp DNA plasmid produced antibodies capable of lysing the parasites in the presence of complement and were protected against a lethal challenge with T. cruzi trypomastigotes. These results demonstrate the superiority of DNA immunization over protein immunization with the recombinant CRP. The work also supports the further investigation of CRP as a component of a multigene, anti-T. cruzi DNA vaccine.
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