posted on 2023-05-21, 06:59authored byKrakoff, E, Gagne, RB, VandeWoude, S, Scott CarverScott Carver
Lentiviral replication mediated by reverse transcriptase is considered to be highly error prone, leading to a high intra-individual evolution rate that promotes evasion of neutralization and persistent infection. Understanding lentiviral intra-individual evolutionary dynamics on a comparative basis can therefore inform research strategies to aid in studies of pathogenesis, vaccine design, and therapeutic intervention. We conducted a systematic review of intra-individual evolution rates for three species groups of lentiviruses—feline immunodeficiency virus (FIV), simian immunodeficiency virus (SIV), and human immunodeficiency virus (HIV). Overall, intra-individual rate estimates differed by virus but not by host, gene, or viral strain. Lentiviral infections in spillover (nonadapted) hosts approximated infections in primary (adapted) hosts. Our review consistently documents that FIV evolution rates within individuals are significantly lower than the rates recorded for HIV and SIV. FIV intra-individual evolution rates were noted to be equivalent to FIV interindividual rates. These findings document inherent differences in the evolution of FIV relative to that of primate lentiviruses, which may signal intrinsic difference of reverse transcriptase between these viral species or different host-viral interactions. Analysis of lentiviral evolutionary selection pressures at the individual versus population level is valuable for understanding transmission dynamics and the emergence of virulent and avirulent strains and provides novel insight for approaches to interrupt lentiviral infections.
Funding
National Science Foundation
History
Publication title
Journal of Virology
Volume
93
Issue
16
Article number
e00538-19
Number
e00538-19
ISSN
1098-5514
Department/School
School of Natural Sciences
Publisher
American Society for Microbiology
Place of publication
United States
Rights statement
Copyright 2019 American Society of Microbiology
Repository Status
Open
Socio-economic Objectives
Control of pests, diseases and exotic species in terrestrial environments