Abstract
Synthetic peptides are potential vaccine candidates because they may be able to induce high antibody titres and specific cellular immune responses against native proteins and thus the whole invading organism1. In a previous study we showed that immunization with molecules of relative molecular mass (Mr) 155,000 (155K) 83K, 55K and 35K, specific for the late schizont and merozoite stages of Plasmodium falciparum, could elicit either partial or total protection in Aotus trivirgatus monkeys experimentally infected with P. falciparum2. Here we have chemically synthesized 18 peptides corresponding to different fragments of these proteins to immunize Aotus trivirgatus monkeys. Some peptides gave partial protection from challenge with P. falciparum parasites, but none provided complete protection individually. A combination of three partially protective peptides gave complete or almost complete protection, however, suggesting that this particular combination of peptides is a good candidate for a malaria vaccine.
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Patarroyo, M., Romero, P., Torres, M. et al. Induction of protective immunity against experimental infection with malaria using synthetic peptides. Nature 328, 629–632 (1987). https://doi.org/10.1038/328629a0
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DOI: https://doi.org/10.1038/328629a0
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