Abstract
Persistent viral infections are characterized by the simultaneous presence of chronic inflammation and T cell dysfunction. In prototypic models of chronicity--infection with human immunodeficiency virus (HIV) or lymphocytic choriomeningitis virus (LCMV)--we used transcriptome-based modeling to reveal that CD4(+) T cells were co-exposed not only to multiple inhibitory signals but also to tumor-necrosis factor (TNF). Blockade of TNF during chronic infection with LCMV abrogated the inhibitory gene-expression signature in CD4(+) T cells, including reduced expression of the inhibitory receptor PD-1, and reconstituted virus-specific immunity, which led to control of infection. Preventing signaling via the TNF receptor selectively in T cells sufficed to induce these effects. Targeted immunological interventions to disrupt the TNF-mediated link between chronic inflammation and T cell dysfunction might therefore lead to therapies to overcome persistent viral infection.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Adult
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Aged
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Animals
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CD4-Positive T-Lymphocytes / immunology*
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CD4-Positive T-Lymphocytes / metabolism
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CD4-Positive T-Lymphocytes / virology
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Flow Cytometry
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HEK293 Cells
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HIV / immunology*
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HIV / physiology
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HIV Infections / genetics
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HIV Infections / immunology*
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HIV Infections / virology
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Host-Pathogen Interactions / immunology
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Humans
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Immunoblotting
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Lymphocytic Choriomeningitis / genetics
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Lymphocytic Choriomeningitis / immunology*
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Lymphocytic Choriomeningitis / virology
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Lymphocytic choriomeningitis virus / immunology*
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Lymphocytic choriomeningitis virus / physiology
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Mice, Inbred C57BL
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Mice, Knockout
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Mice, Transgenic
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Middle Aged
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Oligonucleotide Array Sequence Analysis
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Programmed Cell Death 1 Receptor / genetics
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Programmed Cell Death 1 Receptor / immunology
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Programmed Cell Death 1 Receptor / metabolism
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Receptors, Tumor Necrosis Factor / genetics
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Receptors, Tumor Necrosis Factor / immunology
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Receptors, Tumor Necrosis Factor / metabolism
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Reverse Transcriptase Polymerase Chain Reaction
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Transcriptome / drug effects
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Transcriptome / genetics
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Transcriptome / immunology
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Tumor Necrosis Factor-alpha / immunology*
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Tumor Necrosis Factor-alpha / metabolism
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Tumor Necrosis Factor-alpha / pharmacology
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Young Adult
Substances
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Programmed Cell Death 1 Receptor
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Receptors, Tumor Necrosis Factor
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Tumor Necrosis Factor-alpha