Preferential usage of T-cell receptor V beta 17 by dengue virus-specific human T lymphocytes in a donor with immunity to dengue virus type 4.
In order to better understand human T-cell responses to dengue viruses (DV), we analyzed T-cell receptor (TCR) V beta gene usage in DV-specific T lymphocytes. Peripheral blood T lymphocytes from a DV type 4 immune donor were stimulated in vitro with DV type 4 antigen, and TCR usage was examined by reverse transcriptase PCR. TCR V beta 17 was preferentially used (P = 0.020) among T cells stimulated by DV type 4 in bulk culture. Furthermore, 8 of 19 DV type 4-specific CD4+ T-cell clones established from the peripheral blood mononuclear cells expressed V beta 17 (P = 0.008). Preferential usage of TCR V alpha was not found among T cells expressing V beta 17. These results indicate that there is preferential usage of TCR V beta 17 among DV-specific T cells in this donor and suggest that T cells with certain TCRs may be important in immune responses to DV.
Okamoto
Y
Y
Department of Medicine, University of Massachusetts Medical Center, Worcester 01655.
Gagnon
S J
SJ
Kurane
I
I
Leporati
A M
AM
Ennis
F A
FA
D000595:Amino Acid Sequence; D001483:Base Sequence; D001782:Blood Donors; D003716:Dengue Virus / Q000276:immunology*; D006801:Humans; D007109:Immunity; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000235:genetics*; D013601:T-Lymphocytes / Q000276:immunology*
D016693:Receptors, Antigen, T-Cell, alpha-beta