Abstract
Neutralizing antibody (nAb) responses to lymphocytic choriomeningitis virus (LCMV) in mice and immunodeficiency virus and hepatitis C virus in humans are usually weak and slow to develop. This may be the result of structural properties of the surface glycoprotein, a low frequency of B cells with neutralizing specificity, and the necessity of prolonged affinity maturation of specific nAbs. In this study, we show that during LCMV infection, CD27 signaling on CD4+ T cells enhances the secretion of interferon-gamma and tumor necrosis factor-alpha. These inflammatory cytokines lead to the destruction of splenic architecture and immunodeficiency with reduced and delayed virus-specific nAb responses. Consequently, infection with the otherwise persistent LCMV strain Docile was eliminated after CD27 signaling was blocked. Our data provide a novel mechanism by which LCMV avoids nAb responses and suggest that blocking the CD27-CD70 interaction may be an attractive strategy to prevent chronic viral infection.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adoptive Transfer
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Animals
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Antibodies, Viral / biosynthesis
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Antibodies, Viral / immunology
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Antigens, CD / immunology
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CD27 Ligand
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CD4-Positive T-Lymphocytes / immunology*
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CD4-Positive T-Lymphocytes / metabolism
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Chronic Disease
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Humans
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Immunosuppression Therapy
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Interferon-gamma / immunology
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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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Membrane Proteins / immunology
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Mice
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Mice, Knockout
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Neutralization Tests
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Signal Transduction*
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Spleen / cytology
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Spleen / immunology
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Spleen / pathology
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Tumor Necrosis Factor Receptor Superfamily, Member 7 / genetics
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Tumor Necrosis Factor Receptor Superfamily, Member 7 / metabolism*
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Tumor Necrosis Factor-alpha / immunology
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Tumor Necrosis Factors / immunology
Substances
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Antibodies, Viral
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Antigens, CD
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CD27 Ligand
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CD70 protein, human
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Cd70 protein, mouse
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Membrane Proteins
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Tumor Necrosis Factor Receptor Superfamily, Member 7
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Tumor Necrosis Factor-alpha
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Tumor Necrosis Factors
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Interferon-gamma