T-cell receptor gene expression by human gamma delta T-cell clones from peripheral blood and reproductive tissues in relation to non-MHC-restricted cytotoxic function.
T-cell receptor gamma and delta gene expression was determined using V-region-specific monoclonal antibodies in conjunction with Southern blot analysis in panels of gamma delta T-cell clones from human peripheral blood (n = 77) and reproductive tissue (n = 9). Whereas 53 out of 77 (69%) clones from peripheral blood expressed V gamma 9 and V delta 2J1, only 2 out of 9 (22%) from reproductive tissues expressed V delta 2J1. Two out of eight decidual clones expressed both V gamma 9 and V delta 1J1, while this configuration was rare in clones from peripheral blood. The majority of clones from the peripheral blood of one donor expressed V gamma 8 and V delta 3J1. Clones were identified which expressed V delta 1J1 in the disulphide-linked C gamma 1 form of the receptor and which expressed a gene other than V delta 1 in the non-disulphide-linked C gamma 2 form, indicating incomplete concordance between expression of V delta 1 and C gamma 2. V delta 3 could be expressed in the disulphide-linked or non-disulphide-linked form of the receptor. At least 5 out of 77 peripheral clones were expressing V delta genes other than V delta 1, V delta 2, or V delta 3 in conjunction with C gamma 1 or C gamma 2. There was a strong but incomplete correlation between high non-NHC-restricted cytotoxic function and C gamma 1 expression. Clones from the same donor expressing both V gamma 9JPC gamma 1 and V delta 2J1 showed either high or negligible cytotoxicity, and cytotoxic clones expressing C gamma 2 were found. Thus no complete correlation between cytotoxic function and expression of a particular form of the gamma delta heterodimer was identified. The results also suggest that gamma delta T cells from reproductive tissues are less likely to express V delta 2J1 than those from peripheral blood.
Christmas
S E
SE
Department of Immunology, University of Liverpool, UK.
D000911:Antibodies, Monoclonal / Q000276:immunology; D015139:Blotting, Southern; D002584:Cervix Uteri / Q000276:immunology; D002999:Clone Cells; D003602:Cytotoxicity, Immunologic; D004247:DNA / Q000032:analysis; D003656:Decidua / Q000276:immunology; D004848:Epithelium / Q000276:immunology; D005260:Female; D015870:Gene Expression; D015329:Gene Rearrangement, T-Lymphocyte / Q000276:immunology; D006801:Humans; D016130:Immunophenotyping; D008285:Major Histocompatibility Complex / Q000276:immunology*; D011247:Pregnancy; D011948:Receptors, Antigen, T-Cell / Q000235:genetics*; D016692:Receptors, Antigen, T-Cell, gamma-delta; D013601:T-Lymphocytes / Q000276:immunology; D014407:Tumor Cells, Cultured
D000911:Antibodies, Monoclonal; D011948:Receptors, Antigen, T-Cell; D016692:Receptors, Antigen, T-Cell, gamma-delta; D004247:DNA