title: Comprehensive analysis of the functional TCR repertoire at the single-cell level.
abstract: A Vbeta TCR repertoire is analyzed for understanding the T-cell population in the immune response. However, the TCR repertoire of the Valpha-Vbeta pair is difficult to analyze because no suitable analytical method is available. Here, we have applied the single-cell 5'-RACE method for amplifying TCR cDNAs from single T-cells and analyzed the repertoire of Valpha-Vbeta pairs in human T-cells that responded to a superantigen, SEB. We found that the TCR Vbeta profile of the SEB-stimulated CD4(+) T-cells was in accordance with the previous reports, that the TCR Valpha profile also exhibited a prominent difference, and that the TCR Valpha-Vbeta pairs of the SEB-responding T-cells were promiscuous. We have also found a significant dual TCRalpha expression in single T-cells. This is the first report of a comprehensive analysis of the functional repertoire of Valpha-Vbeta pairs at the single T-cell level. This novel method may contribute to TCR-based immunotherapeutics.
authors.affiliation: Department of Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
authors.forename: Tatsuhiko
authors.initials: T
authors.lastname: Ozawa
authors.forename: Kazuto
authors.initials: K
authors.lastname: Tajiri
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kishi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Muraguchi
mesh_terms: D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D002478:Cells, Cultured; D019672:Genes, T-Cell Receptor / Q000276:immunology*; D006801:Humans; D007113:Immunity, Innate / Q000276:immunology*; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000276:immunology*
chemical_list: D016693:Receptors, Antigen, T-Cell, alpha-beta