title: Idiotype expression and fine specificity of Glu60Ala30Tyr10-specific T proliferating cells.
abstract: The fine specificity of anti-Glu60Ala30Tyr10 (GAT) and anti-Glu60Ala40 (GA) proliferating cells was studied. T cells primed with GAT proliferate both to GAT and GA and GA-primed T cells proliferate also to GA and GAT. This cross-reactivity was unexpected given the results previously reported on the fine specificity of anti-GAT antibodies. The effect on the proliferation of BALB/c lymph node cells (LNC) of a syngeneic anti-idiotypic serum, prepared in BALB/c against anti-GAT antibodies, was studied. Two major points are made in this paper: (i) the in vitro addition of the anti-idiotypic serum in cultures containing GAT-primed LNC and GAT enhances the proliferation of GAT-specific T cells; (ii) the anti-idiotypic serum is effective in priming in vivo LNC which then acquire the capacity to proliferate specifically with GAT in vitro. These results further confirm the existence of idiotype-like determinants on T cells.
mesh_terms: D000818:Animals; D000961:Antilymphocyte Serum / Q000494:pharmacology; D000939:Epitopes; D007130:Immunoglobulin Idiotypes / Q000032:analysis* / Q000276:immunology; D008198:Lymph Nodes / Q000166:cytology; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000961:Antilymphocyte Serum; D000939:Epitopes; D007130:Immunoglobulin Idiotypes; C022204:anti-GAT antibodies, idiotypic