Volume 28, Issue 4 pp. 1172-1180
Article
Free Access

Evidence for the persistence of monoclonal expansions of CD8+ T cells following primary simian immunodeficiency virus infection

Jamie D. K. Wilson

Jamie D. K. Wilson

Molecular Immunology Group, Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, GB

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Martin Cranage

Martin Cranage

Centre for Applied Microbiology & Research (CAMR), Porton Down, Salisbury, GB

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Nicola Cook

Nicola Cook

Centre for Applied Microbiology & Research (CAMR), Porton Down, Salisbury, GB

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Sharon Leech

Sharon Leech

Centre for Applied Microbiology & Research (CAMR), Porton Down, Salisbury, GB

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Andrew J. McMichael

Andrew J. McMichael

Molecular Immunology Group, Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, GB

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Margaret F. C. Callan

Margaret F. C. Callan

Molecular Immunology Group, Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, GB

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Abstract

A longitudinal study of the CD8+ TCR variable (Vβ) chain repertoire was performed in rhesus macaques experimentally infected with simian immunodeficiency virus (SIV) using both TCR Vβ chain-specific monoclonal antibodies and TCR β chain CDR3 length analysis. Expansions of subpopulations of CD8+ T cells were detected during the acute phase of SIV infection. In all monkeys studied, monoclonal expansions persisted for at least 18 months and increasingly dominated the repertoire of CD8+ T cells expressing the relevant Vβ chain. This study shows that persistent CD8+ T cell expansions develop in response to a virus infection. This is important not only for our understanding of the T cell response to viruses but also for understanding the factors that determine the normal CD8+ TCR repertoire.

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