Abstract
T cells of two donors, JR (HLA-A23, 29; B7,7; G; DRw5) and HG (HLA-A2, 23; B40, w44; Cw4), were stimulated with cells from an HLA homozygous lymphoblastoid cell line JY (HLA-A2, 2; B7,7, C-, DRw4, 6) and cloned by limiting dilution after the third stimulation. Two cytotoxic T-cell (CTL) clones, JR-2-16 (from donor JR) and HG-31 (from donor HG), were used for detailed studies. The results of a panel study using lymphocytes from HLA-typed individuals and a study with two HLA recombinant families indicate that the antigens recognized by the CTL clones JR-2-16 and HG-31 were highly associated with HLA-A2 and HLA-B7, respectively. Blocking studies with a monoclonal antibody recognizing a framework determinant on HLA-A, -B and-C antigens and a monoclonal antibody reacting with HLA-A2 support the notion that JR-2-16 and HG-31 interact with the HLA-A2 and the HLA-B7 antigens per se. However, these clones did not recognize the HLA-A2 and HLA-B7 of all donors typed for these antigens, suggesting that the HLA-A2 and HLA-B7 antigens of these particular donors are variants of the serologically defined HLA antigens. These results indicate that in vitro-derived human CTL clones detect variations in the serologically defined allospecificities and can be used as reagents to elucidate the polymorphism of HLA antigens further.
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Abbreviations
- CTL:
-
cytotoxic
- T:
-
lymphocytes
- BSA:
-
bovine serum albumin
- PHA:
-
phytohemagglutinin
- Con A:
-
concanavalin A.
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Spits, H., Breuning, M., Ivanyi, P. et al. In vitro-isolated human cytotoxic T-lymphocyte clones detect variations in serologically defined HLA antigens. Immunogenetics 16, 503–512 (1982). https://doi.org/10.1007/BF00372020
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DOI: https://doi.org/10.1007/BF00372020