title: Effective downregulation of HLA-A*2 and HLA-B*57 by primary human immunodeficiency virus type 1 isolates cultured from elite suppressors.
abstract: Elite controllers or suppressors (ES) are human immunodeficiency virus type 1 (HIV-1)-infected patients who control viral replication to <50 copies/ml without antiretroviral therapy. Downregulation of HLA class I molecules is an important mechanism used by HIV-1 to evade the immune system. In this study, we showed that primary isolates from ES are as effective as isolates obtained from patients with progressive HIV-1 disease at downregulating HLA-A*2 and HLA-B*57 molecules on primary CD4(+) T cells. Thus, a diminished ability of viral isolates from ES to evade HIV-specific immune responses probably does not contribute to the control of viral replication in these patients.
authors.affiliation: Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Nou
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Damaris D
authors.initials: DD
authors.lastname: Nou
authors.forename: Joel N
authors.initials: JN
authors.lastname: Blankson
mesh_terms: D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000821:virology; D002478:Cells, Cultured; D015536:Down-Regulation; D015658:HIV Infections / Q000276:immunology*; D020276:HIV Long-Term Survivors; D015497:HIV-1 / Q000276:immunology; D015789:HLA-A2 Antigen / Q000235:genetics / Q000276:immunology*; D015235:HLA-B Antigens / Q000235:genetics / Q000276:immunology*; D006801:Humans
chemical_list: D015789:HLA-A2 Antigen; D015235:HLA-B Antigens; C103707:HLA-B57 antigen