Genetic Diversity and Natural Selection in 42 kDa Region of Plasmodium vivax Merozoite Surface Protein-1 from China-Myanmar Endemic Border.
10.3347/kjp.2017.55.5.473
- Author:
Xia ZHOU
1
;
Ernest TAMBO
;
Jing SU
;
Qiang FANG
;
Wei RUAN
;
Jun Hu CHEN
;
Ming Bo YIN
;
Xiao Nong ZHOU
Author Information
1. Medical College of Soochow University, Suzhou 215123, P. R. China.
- Publication Type:Original Article
- Keywords:
Plasmodium vivax;
merozoite surface protein-1;
genetic polymorphism;
natural selection;
Myanmar;
China
- MeSH:
China;
Genetic Variation*;
Haplotypes;
Malaria;
Merozoite Surface Protein 1*;
Merozoites*;
Myanmar;
Plasmodium vivax*;
Plasmodium*;
Polymorphism, Genetic;
Selection, Genetic*;
Silent Mutation
- From:The Korean Journal of Parasitology
2017;55(5):473-480
- CountryRepublic of Korea
- Language:English
-
Abstract:
Plasmodium vivax merozoite surface protein-1 (PvMSP1) gene codes for a major malaria vaccine candidate antigen. However, its polymorphic nature represents an obstacle to the design of a protective vaccine. In this study, we analyzed the genetic polymorphism and natural selection of the C-terminal 42 kDa fragment within PvMSP1 gene (Pv MSP142) from 77 P. vivax isolates, collected from imported cases of China-Myanmar border (CMB) areas in Yunnan province and the inland cases from Anhui, Yunnan, and Zhejiang province in China during 2009–2012. Totally, 41 haplotypes were identified and 30 of them were new haplotypes. The differences between the rates of non-synonymous and synonymous mutations suggest that PvMSP142 has evolved under natural selection, and a high selective pressure preferentially acted on regions identified of PvMSP133. Our results also demonstrated that PvMSP142 of P. vivax isolates collected on China-Myanmar border areas display higher genetic polymorphisms than those collected from inland of China. Such results have significant implications for understanding the dynamic of the P. vivax population and may be useful information towards China malaria elimination campaign strategies.