Simian Immunodeficiency Virus-Specific CD8+ T Cells Recognize Vpr- and Rev-Derived Epitopes Early after Infection

JB Sacha, MB Buechler, LP Newman, J Reed… - Journal of …, 2010 - Am Soc Microbiol
JB Sacha, MB Buechler, LP Newman, J Reed, LT Wallace, JT Loffredo, NA Wilson…
Journal of virology, 2010Am Soc Microbiol
The kinetics of CD8+ T cell epitope presentation contribute to the antiviral efficacy of these
cells yet remain poorly defined. Here, we demonstrate presentation of virion-derived Vpr
peptide epitopes early after viral penetration and prior to presentation of Vif-derived
epitopes, which required de novo Vif synthesis. Two Rev epitopes exhibited differential
presentation kinetics, with one Rev epitope presented within 1 h of infection. We also
demonstrate that cytolytic activity mirrors the recognition kinetics of infected cells. These …
Abstract
The kinetics of CD8+ T cell epitope presentation contribute to the antiviral efficacy of these cells yet remain poorly defined. Here, we demonstrate presentation of virion-derived Vpr peptide epitopes early after viral penetration and prior to presentation of Vif-derived epitopes, which required de novo Vif synthesis. Two Rev epitopes exhibited differential presentation kinetics, with one Rev epitope presented within 1 h of infection. We also demonstrate that cytolytic activity mirrors the recognition kinetics of infected cells. These studies show for the first time that Vpr- and Rev-specific CD8+ T cells recognize and kill simian immunodeficiency virus (SIV)-infected CD4+ T cells early after SIV infection.
American Society for Microbiology