Proliferative capacity of epitope-specific CD8 T-cell responses is inversely related to viral load in chronic human immunodeficiency virus type 1 infection |
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Authors: | Day Cheryl L Kiepiela Photini Leslie Alasdair J van der Stok Mary Nair Kriebashne Ismail Nasreen Honeyborne Isobella Crawford Hayley Coovadia Hoosen M Goulder Philip J R Walker Bruce D Klenerman Paul |
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Affiliation: | Nuffield Department of Medicine, The Peter Medawar Building for Pathogen Research, South Parks Road, Oxford OX1 3SY, United Kingdom. |
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Abstract: | The relationship between the function of human immunodeficiency virus (HIV)-specific CD8 T-cell responses and viral load has not been defined. In this study, we used a panel of major histocompatibility complex class I tetramers to examine responses to frequently targeted CD8 T-cell epitopes in a large cohort of antiretroviral-therapy-na?ve HIV type 1 clade C virus-infected persons in KwaZulu Natal, South Africa. In terms of effector functions of proliferation, cytokine production, and degranulation, only proliferation showed a significant correlation with viral load. This robust inverse relationship provides an important functional correlate of viral control relevant to both vaccine design and evaluation. |
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