Abstract
Individuals infected with human immunodeficiency virus type-1 (HIV-1) show metabolic alterations of CD4+ T cells through unclear mechanisms with undefined consequences. We analyzed the transcriptome of CD4+ T cells from patients with HIV-1 and revealed that the elevated oxidative phosphorylation (OXPHOS) pathway is associated with poor outcomes. Inhibition of OXPHOS by the US Food and Drug Administration-approved drug metformin, which targets mitochondrial respiratory chain complex-I, suppresses HIV-1 replication in human CD4+ T cells and humanized mice. In patients, HIV-1 peak viremia positively correlates with the expression of NLRX1, a mitochondrial innate immune receptor. Quantitative proteomics and metabolic analyses reveal that NLRX1 enhances OXPHOS and glycolysis during HIV-1-infection of CD4+ T cells to promote viral replication. At the mechanistic level, HIV infection induces the association of NLRX1 with the mitochondrial protein FASTKD5 to promote expression of mitochondrial respiratory complex components. This study uncovers the OXPHOS pathway in CD4+ T cells as a target for HIV-1 therapy.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Animals
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Antiviral Agents / pharmacology
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CD4-Positive T-Lymphocytes / drug effects
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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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Disease Models, Animal
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Female
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Gene Expression Profiling
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Gene Regulatory Networks
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Genomics*
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HEK293 Cells
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HIV Infections / drug therapy
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HIV Infections / immunology
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HIV Infections / metabolism
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HIV Infections / virology*
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HIV-1 / drug effects
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HIV-1 / growth & development*
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HIV-1 / immunology
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HIV-1 / metabolism
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Host-Pathogen Interactions
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Humans
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Jurkat Cells
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Male
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Metabolome*
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Metabolomics*
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Metformin / pharmacology
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Mice
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Mitochondrial Proteins / genetics
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Mitochondrial Proteins / metabolism
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Oxidative Phosphorylation* / drug effects
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Proteome*
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Proteomics
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RNA-Binding Proteins / genetics
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RNA-Binding Proteins / metabolism
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Transcriptome*
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Viral Load
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Virus Replication* / drug effects
Substances
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Antiviral Agents
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Mitochondrial Proteins
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NLRX1 protein, human
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Proteome
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RNA-Binding Proteins
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TBRG4 protein, human
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Metformin