Induction of protective immunity in rhesus monkey by inoculation with recombinant fusion protein of cholera toxin B subunit-multivalent epitopes of Plasmodium falciparum.
- Author:
Ping LI
1
;
Hui ZHONG
;
Cheng-Hua SHI
;
Jie-Zhi LI
;
Yan-Hong ZHANG
;
Chu-Fang LI
;
Yun-Lin SHI
;
Qing-Jun MA
;
Cheng CAO
Author Information
1. Beijing Institute of Biotechnology, Beijing 100850, China.
- Publication Type:Journal Article
- MeSH:
Animals;
Antibodies, Bacterial;
blood;
Antibodies, Protozoan;
blood;
Cholera Toxin;
genetics;
immunology;
Erythrocytes;
parasitology;
Macaca mulatta;
Malaria;
prevention & control;
veterinary;
Malaria Vaccines;
immunology;
Monkey Diseases;
prevention & control;
Plasmodium cynomolgi;
Plasmodium falciparum;
immunology;
Recombinant Fusion Proteins;
immunology;
Vaccines, Synthetic;
immunology
- From:
Chinese Journal of Biotechnology
2004;20(4):516-519
- CountryChina
- Language:Chinese
-
Abstract:
Rhesus monkeys (5 in each group) were inoculated with recombinant fusion protein of cholera toxin B subunit and multi-valent epitopes of Plasmodium falciparum intranasal or intramuscular (i.m.). Immune-responses and protective effect were evaluated. The antibody titer (Geometry mean) against CTB reached 1:512 (intranasal) and 1:10000 (i.m.) 14 day after 3rd immunization, and antibodies against P. falciparum were also elucidated, the titers in i.m. group were also significantly higher than that in intranasal group. The monkeys were challenged with 1.25 x 10(8) sporozoites of P. cynomolgi, Patent infection was observed in all 5 monkeys in control group inoculated with PBS in 10 - 14 days after challenge. Patent infection was also observed in 5 animals inoculated via intranasal and 2 animals in intramuscular group 19th days after challenge, But the infection last only 4 days in 3 animals in intranasal group and 2 animals in intramuscular group. The results demonstrated that the vaccine candidate could induce protective immune-responses in rhesus monkey against the challenge of P. cynomolgi.
