title: Characterization of virus-specific CD8(+) effector T cells in the course of HIV-1 infection: longitudinal analyses in slow and rapid progressors.
abstract: Studies in humans have provided evidence that CD8(+) T cells exhibit distinct phenotypical and functional properties dependent on virus specificity. It is not known how these T-cell phenotypes develop over the course of infection. Dynamics and properties of T cells specific for human immunodeficiency virus (HIV), cytomegalovirus (CMV), and Epstein-Barr virus (EBV) in HIV infection were investigated in relation to viral load. In rapid progressors, HIV-specific CD8(+) T cells were less differentiated early in infection and did not develop a more differentiated phenotype. In slow progressors, perforin expression of HIV-specific CD8(+) T cells slightly increased over time. HIV and EBV loads were detectable in all individuals, while CMV load could not be detected. Thus, in individuals with progressive HIV infection, HIV-specific T cells are less differentiated already early in infection. This apparent block in differentiation may be partly caused by chronic viremia or lack of CD4(+) T-cell help.
authors.affiliation: Department of Clinical Viro-Immunology, Sanquin Research and Landsteiner Laboratory of the Academic Medical Center, University of Amsterdam, Plesmanlaan 125, 1066 CX Amsterdam, The Netherlands.
authors.forename: Christine A
authors.initials: CA
authors.lastname: Jansen
authors.forename: Erwan
authors.initials: E
authors.lastname: Piriou
authors.forename: Corine
authors.initials: C
authors.lastname: Bronke
authors.forename: José
authors.initials: J
authors.lastname: Vingerhoed
authors.forename: Stefan
authors.initials: S
authors.lastname: Kostense
authors.forename: Debbie
authors.initials: D
authors.lastname: van Baarle
authors.forename: Frank
authors.initials: F
authors.lastname: Miedema
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology / Q000821:virology; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D002454:Cell Differentiation; D003587:Cytomegalovirus / Q000502:physiology; D018450:Disease Progression; D053804:Granzymes; D015658:HIV Infections / Q000276:immunology* / Q000821:virology*; D015497:HIV-1 / Q000276:immunology; D004854:Herpesvirus 4, Human / Q000502:physiology; D006801:Humans; D018655:Lymphocyte Count; D008562:Membrane Glycoproteins / Q000378:metabolism; D054353:Perforin; D010641:Phenotype; D052899:Pore Forming Cytotoxic Proteins; D012697:Serine Endopeptidases / Q000378:metabolism; D013997:Time Factors; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7 / Q000378:metabolism; D019562:Viral Load
chemical_list: D008562:Membrane Glycoproteins; D052899:Pore Forming Cytotoxic Proteins; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7; D054353:Perforin; C509213:GZMB protein, human; D053804:Granzymes; D012697:Serine Endopeptidases