Relative Dominance of Gag p24-Specific Cytotoxic T Lymphocytes Is Associated with Human Immunodeficiency Virus Control

Author:

Zuñiga Rosario1,Lucchetti Aldo1,Galvan Patricia1,Sanchez Shyla1,Sanchez Carmen1,Hernandez Ana1,Sanchez Hugo1,Frahm Nicole2,Linde Caitlyn H.2,Hewitt Hannah S.2,Hildebrand William3,Altfeld Marcus2,Allen Todd M.2,Walker Bruce D.2,Korber Bette T.4,Leitner Thomas4,Sanchez Jorge1,Brander Christian2

Affiliation:

1. Asociación Civil IMPACTA Salud y Educación, Lima, Peru

2. Partners AIDS Research Center, Massachusetts General Hospital, Charlestown, Massachusetts

3. University of Oklahoma, Norman, Oklahoma

4. Los Alamos National Laboratory, Los Alamos, and Santa Fe Institute, Santa Fe, New Mexico

Abstract

ABSTRACT Conflicting data on the role of total virus- and protein-specific cytotoxic-T-lymphocyte (CTL) responses in the control of human immunodeficiency virus (HIV) disease progression exist. We present data generated from a Peruvian cohort of untreated, clade B-infected subjects, demonstrating that the proportion of Gag-specific, and in particular p24-reactive, CTL responses among the total virus-specific CTL activity is associated with individuals' CD4 counts and viral loads. Analyses in a second cohort in the United States confirm these findings and point towards a dominant role of Gag-specific immunity in effective control of HIV infection, providing important guidance for HIV vaccine development.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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