title: Random T-cell receptor recruitment in human immunodeficiency virus type 1 (HIV-1)-specific CD8+ T cells from genetically identical twins infected with the same HIV-1 strain.
abstract: Human immunodeficiency virus type 1 (HIV-1) cytotoxic T-lymphocyte escape mutations represent both a major reason for loss of HIV immune control and a considerable challenge for HIV-1 vaccine design. Previous data suggest that initial HIV-1-specific CD8(+) T-cell responses are determined largely by viral and host genetics, but the mechanisms influencing the subsequent viral evolution are unclear. Here, we show a random recruitment of T-cell receptor (TCR) alpha and beta clonotypes of the initial HIV-1-specific CD8(+) T cells during primary infection in two genetically identical twins infected simultaneously with the same virus, suggesting that stochastic TCR recruitment of HIV-1-specific CD8(+) T cells contributes to the diverse and unpredictable HIV-1 sequence evolution.
authors.affiliation: Partners AIDS Research Center, Massachusetts General Hospital, Charlestown, MA 02129, USA.
authors.forename: Xu G
authors.initials: XG
authors.lastname: Yu
authors.forename: Mathias
authors.initials: M
authors.lastname: Lichterfeld
authors.forename: Katie L
authors.initials: KL
authors.lastname: Williams
authors.forename: Javier
authors.initials: J
authors.lastname: Martinez-Picado
authors.forename: Bruce D
authors.initials: BD
authors.lastname: Walker
mesh_terms: D000595:Amino Acid Sequence; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology / Q000821:virology*; D004200:Diseases in Twins / Q000276:immunology* / Q000821:virology*; D018984:Epitopes, T-Lymphocyte / Q000276:immunology; D019143:Evolution, Molecular; D015658:HIV Infections / Q000276:immunology*; D015497:HIV-1 / Q000302:isolation & purification; D006801:Humans; D008969:Molecular Sequence Data; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000235:genetics / Q000276:immunology*; D014430:Twins, Monozygotic