Cytomegalovirus (CMV)-specific CD8+ T cells in individuals with HIV infection: correlation with protection from CMV disease.
CD8+ cytotoxic T cells play a key role in immunological protection from clinical cytomegalovirus (CMV) disease. Numbers of CMV-specific CD8+ T cells are increased in untreated and antiretroviral-treated HIV patients compared with healthy controls. Accumulation of CMV-specific CD8+ T cells during HIV infection may reflect persistent reactivation of CMV owing to suboptimal immune control and/or oligoclonal expansion of the limited populations of CMV-specific CD8+ T cells present before antiretroviral therapy (ART). CD8+ T cells directed against the CMV immediate early (IE)-1 protein may play an important role in preventing CMV replication to pathogenic levels. However, immunological protection from CMV disease in HIV-infected individuals on ART does not appear to depend on total numbers of CMV-specific CD8+ T cells but rather on the presence of both effector-memory and effector CMV-specific CD8+ T cells that produce interferon-gamma and/or perforin in response to CMV antigens.
Stone
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SF
School of Medicine, Division of Infectious Diseases, Case Western Reserve University, Cleveland, OH 44106, USA. sfs13@case.edu
Price
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P
French
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MA
D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D003587:Cytomegalovirus / Q000276:immunology*; D003586:Cytomegalovirus Infections / Q000276:immunology / Q000517:prevention & control*; D015658:HIV Infections / Q000276:immunology*; D006801:Humans; D007371:Interferon-gamma / Q000378:metabolism; D008562:Membrane Glycoproteins / Q000378:metabolism; D054353:Perforin; D010750:Phosphoproteins / Q000276:immunology; D052899:Pore Forming Cytotoxic Proteins; D014763:Viral Matrix Proteins / Q000276:immunology
D008562:Membrane Glycoproteins; D010750:Phosphoproteins; D052899:Pore Forming Cytotoxic Proteins; D014763:Viral Matrix Proteins; C065418:cytomegalovirus matrix protein 65kDa; D054353:Perforin; D007371:Interferon-gamma