Definition
Viruses, including HIV-like viruses, have been infecting primates and other hosts for millions of years. During this long-term common history, viruses and hosts have constantly put pressure on each other for survival. Over time, hosts have evolved first lines of defense against viruses, the cellular restriction factors, while pathogens have developed mechanisms of evasion and antagonism. These antagonistic relationships have set up genetic conflicts between viruses and hosts that drive their evolution and interactions. Therefore, over evolutionary time and as a result of virus-host arms races, host restriction factors have been rapidly evolving and display signatures of positive selection, in particular at the virus-host interface.
Introduction
Lentiviruses are retroviruses that have been infecting various mammals and in particular primates for millions of years (Gifford 2012). The virus responsible for the AIDS (acquired immune deficiency syndrome) pandemic in humans, HIV...
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Acknowledgment
LE is supported by an amfAR Mathilde Krim Fellowship in Basic Biomedical Research (108499-53-RKGN) and the Centre National de Recherche Scientifique (CNRS). Thank you to Molly Ohainle and Kevin Tartour for their comments on the manuscript, the members of the Emerman and Malik Labs for helpful discussions on these concepts.
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Etienne, L. (2018). Virus-Host Evolution and Positive Selection. In: Hope, T.J., Richman, D.D., Stevenson, M. (eds) Encyclopedia of AIDS. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-7101-5_373
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DOI: https://doi.org/10.1007/978-1-4939-7101-5_373
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