Co-evolution of sites under immune selection shapes Epstein-Barr Virus population structure
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Author(s)
Wegner, Fanny
Lassalle, Florent
Depledge, Daniel P
Balloux, François
Breuer, Judith
Type
Journal Article
Abstract
Epstein-Barr virus (EBV) is one of the most common viral infections in humans and persists within its host for life. EBV therefore represents an extremely successful virus that has evolved complex strategies to evade the host’s innate and adaptive immune response during both initial and persistent stages of infection. Here, we conducted a comparative genomics analysis on 223 whole genome sequences of world-wide EBV strains. We recover extensive genome-wide linkage disequilibrium (LD) despite pervasive genetic recombination. This pattern is explained by the global EBV population being subdivided into three main sub-populations, one primarily found in East Asia, one in Southeast Asia and Oceania, and the third including most of the other globally distributed genomes we analyzed. Additionally, sites in LD were overrepresented in immunogenic genes. Taken together, our results suggest that host immune selection and local adaptation to different human host populations has shaped the genome-wide patterns of genetic diversity in EBV.
Date Issued
2019-11-01
Date Acceptance
2019-06-19
Citation
Molecular Biology and Evolution, 2019, 36 (11), pp.2512-2521
ISSN
0737-4038
Publisher
Oxford University Press
Start Page
2512
End Page
2521
Journal / Book Title
Molecular Biology and Evolution
Volume
36
Issue
11
Copyright Statement
© 2019 The Author(s). Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the
original work is properly cited.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the
original work is properly cited.
Subjects
Evolutionary Biology
0604 Genetics
0603 Evolutionary Biology
0601 Biochemistry and Cell Biology
Publication Status
Published
Date Publish Online
2019-07-02