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Populations of Plasmodium falciparum, the most virulent human malaria parasite, are diverse owing to wide levels of transmission and endemicity of infection. Genetic diversity of P. falciparum antigens, within and between parasite populations, remains a confounding factor in malaria pathogenesis as well as clinical trials of vaccine candidates. Variation of target antigens in parasite populations...
The Plasmodium MSP-1 is a promising malaria vaccine candidate. However, the highly polymorphic nature of the MSP-1 gene (msp1) presents a potential obstacle for effective vaccine development. To investigate the evolutionary history of msp1 polymorphism in P. vivax, we construct phylogenetic trees of msp1 from P. vivax and related monkey malaria parasite species. All P. vivax msp1 alleles cluster in...
Allelic dimorphism is a characteristic feature of the Plasmodium falciparum msp1 gene encoding the merozoite surface protein 1, a strong malaria vaccine candidate. Meiotic recombination is a major mechanism for the generation of msp1 allelic diversity. Potential recombination sites have previously been mapped to specific regions within msp1 (a 5′ 1-kb region and a 3′ 0.4-kb region) with no evidence...
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