Induction of Protective Immune Response in Mice and Rhesus Monkeys by Immunization with Fusion Protein of Cholera Toxin B Subunit and Multiples of Plasmodium falciparum
重组霍乱毒素B亚基与疟原虫多表位融合蛋白的免疫保护作用研究

Recombinant fusion protein of cholera toxin B subunit (CTB) and poly\|valent protective epitopes of plasmodium falciparum was given to i.m to C57BL/6j mice and rhesus monkeys three times. In rhesus monkeys,high level of antibodies for CTB (1:6400) and malaria epitopes (1:3200) amtobpdoes were elicited as well as the specific CTL activity for P. plasmodium . After the mice were challenged with sporozoites of P.yeolli , about 50% of them were protected from the patent infection. A blood\|stage challenge with 10 8 of P.cynomolgi parasite were given to rhesus monkeys, which showed that two animals in control group were patent infection for at least 30 days,in contrast,the two animals immunized were recovered respectively at the day of 11 and 15 after challenges. The results suggested that cholera toxin acts as an effective adjuvent in the development of malaria vaccine.