Genetic polymorphism of vir genes of Plasmodium vivax in Myanmar.

Autor: Na BK; Department of Parasitology and Tropical Medicine, Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Republic of Korea., Kim TS; Department of Tropical Medicine, Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon 22212, Republic of Korea., Lin K; Department of Medical Research Pyin Oo Lwin Branch, Pyin Oo Lwin, Myanmar., Baek MC; Department of Molecular Medicine, CMRI, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea., Chung DI; Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea., Hong Y; Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea., Goo YK; Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea. Electronic address: kuku1819@knu.ac.kr.
Jazyk: angličtina
Zdroj: Parasitology international [Parasitol Int] 2021 Feb; Vol. 80, pp. 102233. Date of Electronic Publication: 2020 Nov 02.
DOI: 10.1016/j.parint.2020.102233
Abstrakt: The Plasmodium vivax variant proteins encoded by vir genes are highly polymorphic antigens and are considered as one of key proteins of P. vivax for host immune evasion via antigenic variations. Because genetic diversity of these antigens is a critical hurdle in the development of an effective vaccine, understanding the genetic nature of the vir genes in natural population is important. In this study, we selected four vir genes (vir 4, vir 12, vir 21, and vir 27) previously used for genetic analysis in several studies and evaluated the genetic polymorphisms and phylogenetic relationship of these 4 vir genes in Myanmar P. vivax population. Taken all genetic diversity values, the vir 12 (S = 168, H = 17, Hd = 0.854, Tajima's D value = 2.91524) was the most genetically diverse gene and the vir 4 (S = 9, H = 4, Hd = 0.744, Tajima's D value = -0.49151) was the most conserved gene. All phylogenetic trees showed two clades, and vir 4 and 12 haplotypes from Myanmar were clustered in a distinct clade with those from India and Republic of Korea. These results confirmed the pattern of high genetic polymorphism of vir genes and provided information on vir gene for further functional research and studies focused toward the practical use of vir genes.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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