Restricted TCR V beta repertoire in the human mixed lymphocyte reaction is determined by the TCR on the responder cell and not by the stimulating antigen on the stimulator cell.
The use of a restricted TCR repertoire has been reported in antigen-stimulated T cells. We have examined by flow cytometry and polymerase chain reaction the changes in the TCR variable beta (V beta) repertoire as they occur in the mixed leukocyte reaction. The HLA class I-negative lymphoblastoid B cell line, Daudi, an HLA class I-positive variant of the Daudi cell line, and the homozygous typing cell line HTC 9062 were used to stimulate HLA-mismatched responder cells from 8 individuals. The magnitude of HLA incompatibility in various combinations ranged from single DR10 and DR13 differences to full 6-antigen differences at the HLA-A, -B, and -DR loci. Using a panel of 19 V beta-specific oligonucleotide primers, changes in the level of TCR V beta mRNA were assessed. The observed V beta repertoire was not specific for the stimulator cell antigens used. We did not find a correlation between the number of mismatched HLA antigens and the number of V beta elements involved. It rather appeared that individual responder cells displayed a uniform V beta pattern following exposure to single and multiple HLA antigens. We conclude that the V beta repertoire was largely determined by factors associated with the TCR on the responder cells, and not as obviously influenced by the HLA antigen(s) on the stimulator cells.
Barth
C
C
Department of Medicine, Beth Israel Hospital, Boston, Massachusetts, USA.
Pavlakis
M
M
Lavery
P
P
Strom
T B
TB
Loertscher
R
R
D017951:Antigen Presentation; D001402:B-Lymphocytes / Q000276:immunology*; D001483:Base Sequence; D002460:Cell Line; D015395:Histocompatibility Antigens Class I / Q000276:immunology; D006801:Humans; D007135:Immunoglobulin Variable Region / Q000276:immunology; D008213:Lymphocyte Activation / Q000276:immunology*; D007959:Lymphocyte Culture Test, Mixed; D008969:Molecular Sequence Data; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000276:immunology*
D015395:Histocompatibility Antigens Class I; D007135:Immunoglobulin Variable Region; D016693:Receptors, Antigen, T-Cell, alpha-beta