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The role of cytotoxic T-cells in HIV infection. 1998

S Rowland-Jones, and T Dong, and P Krausa, and J Sutton, and H Newell, and K Ariyoshi, and F Gotch, and S Sabally, and T Corrah, and J Kimani, and K MacDonald, and F Plummer, and J Ndinya-Achola, and H Whittle, and A McMichael
Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford, U.K.

HIV-specific cytotoxic T lymphocytes (CTL) are believed to play a major role in controlling virus levels through the asymptomatic period of HIV infection. For the rational design of an HIV vaccine, we need to know whether protective immunity can ever develop following HIV exposure in people who remain uninfected. We have detected HIV-specific CTL in 5/6 repeatedly exposed, persistently seronegative female sex-workers in The Gambia. Their CTL, repeatedly detected over two years, recognise epitopes presented by HLA-B35 which are cross-reactive between HIV-1 & HIV-2, suggesting they could have been primed first by HIV-2 exposure and subsequently boosted by exposure to HIV-1. Using previously identified clade B HIV-1 epitope peptides, we have now detected HIV-specific CTL in 6/15 highly exposed and apparently HIV-resistant Kenyan prostitutes, predominantly towards epitopes highly conserved between B and the Kenyan A & D clades of HIV-1. This CTL activity towards conserved virus epitopes may represent protective immunity to HIV generated in response to repeated exposure, and prophylactic HIV vaccines should aim to generate similar CTL responses.

UI MeSH Term Description Entries
D007630 Kenya A republic in eastern Africa, south of ETHIOPIA, west of SOMALIA with TANZANIA to its south, and coastline on the Indian Ocean. Its capital is Nairobi. Republic of Kenya
D011477 Sex Work The act or practice of engaging in sexual relations for money or other benefit. Commercial Sex,Prostitution,Sex Industry,Industries, Sex,Sex Industries,Sex, Commercial,Work, Sex
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D003429 Cross Reactions Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. Cross Reaction,Reaction, Cross,Reactions, Cross
D005260 Female Females
D005714 Gambia A republic in western Africa, constituting an enclave within SENEGAL extending on both sides of the Gambia River. Its capital is Banjul, formerly Bathurst. Republic of the Gambia
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013602 T-Lymphocytes, Cytotoxic Immunized T-lymphocytes which can directly destroy appropriate target cells. These cytotoxic lymphocytes may be generated in vitro in mixed lymphocyte cultures (MLC), in vivo during a graft-versus-host (GVH) reaction, or after immunization with an allograft, tumor cell or virally transformed or chemically modified target cell. The lytic phenomenon is sometimes referred to as cell-mediated lympholysis (CML). These CD8-positive cells are distinct from NATURAL KILLER CELLS and NATURAL KILLER T-CELLS. There are two effector phenotypes: TC1 and TC2. Cell-Mediated Lympholytic Cells,Cytotoxic T Cells,Cytotoxic T Lymphocyte,Cytotoxic T-Lymphocytes,TC1 Cell,TC1 Cells,TC2 Cell,TC2 Cells,Cell Mediated Lympholytic Cells,Cell, Cell-Mediated Lympholytic,Cell, TC1,Cell, TC2,Cell-Mediated Lympholytic Cell,Cytotoxic T Cell,Cytotoxic T Lymphocytes,Cytotoxic T-Lymphocyte,Lymphocyte, Cytotoxic T,Lympholytic Cell, Cell-Mediated,Lympholytic Cells, Cell-Mediated,T Cell, Cytotoxic,T Lymphocyte, Cytotoxic,T Lymphocytes, Cytotoxic,T-Lymphocyte, Cytotoxic
D015497 HIV-1 The type species of LENTIVIRUS and the etiologic agent of AIDS. It is characterized by its cytopathic effect and affinity for the T4-lymphocyte. Human immunodeficiency virus 1,HIV-I,Human Immunodeficiency Virus Type 1,Immunodeficiency Virus Type 1, Human
D015498 HIV-2 An HIV species related to HIV-1 but carrying different antigenic components and with differing nucleic acid composition. It shares serologic reactivity and sequence homology with the simian Lentivirus SIMIAN IMMUNODEFICIENCY VIRUS and infects only T4-lymphocytes expressing the CD4 phenotypic marker. HTLV-IV,Human T-Lymphotropic Virus Type IV,Human immunodeficiency virus 2,LAV-2,HIV-II,Human Immunodeficiency Virus Type 2,Human T Lymphotropic Virus Type IV,Immunodeficiency Virus Type 2, Human,SBL-6669

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