title: Affinity-purified antigen-specific products produced by T cells share epitopes recognized by heterologous antisera raised against several different antigen-specific products from T cells.
abstract: Heterologous antisera to murine or rat T-cell antigen-binding molecules (T-ABM) were raised in rabbits or sheep. The T-ABM used for immunization were purified by affinity for antigen and did not bear known immunoglobulin isotypes. T-ABM and anti-T-ABM were raised in three separate laboratories. Antisera to T-ABM were exchanged and tested for binding to T-ABM in three separate laboratories. Thus antisera to at least three distinct T-ABM were tested directly for binding to T-ABM or by adsorption of biological activity. Rabbit antisera to murine trinitrophenol (TNP)-specific T-ABM or rat AgB-specific T-ABM bound both murine or rat T-ABM, indicating evolutionary conservation of T-ABM. Similar results were found with sheep antisera to murine T-ABM. In addition, all heterologous anti-T-ABM antisera used bound murine T-ABM specific for TNP, 4-hydroxy-3-nitrophenyl acetate (NP), SRBC, or T-cell membrane proteins with similar structure. Thus, there is a commonality of antigenic determinants between various T-ABM and T-cell membrane homologues which may be T-cell surface receptors for foreign antigen.
mesh_terms: D000818:Animals; D000961:Antilymphocyte Serum / Q000276:immunology / Q000302:isolation & purification*; D001666:Binding Sites, Antibody; D002846:Chromatography, Affinity; D003429:Cross Reactions; D004591:Electrophoresis, Polyacrylamide Gel; D000939:Epitopes / Q000302:isolation & purification*; D007106:Immune Sera / Q000302:isolation & purification; D007130:Immunoglobulin Idiotypes / Q000276:immunology; D007518:Isoantibodies / Q000302:isolation & purification; D008222:Lymphokines / Q000378:metabolism; D008565:Membrane Proteins / Q000276:immunology / Q000302:isolation & purification; D051379:Mice; D008810:Mice, Inbred C57BL; D009596:Nitrophenols / Q000276:immunology; D011817:Rabbits; D051381:Rats; D011917:Rats, Inbred Lew; D011948:Receptors, Antigen, T-Cell / Q000276:immunology* / Q000302:isolation & purification; D012756:Sheep; D013491:Suppressor Factors, Immunologic; D013601:T-Lymphocytes / Q000276:immunology*; D014301:Trinitrobenzenes / Q000276:immunology
chemical_list: D000961:Antilymphocyte Serum; D000939:Epitopes; D007106:Immune Sera; D007130:Immunoglobulin Idiotypes; D007518:Isoantibodies; D008222:Lymphokines; D008565:Membrane Proteins; D009596:Nitrophenols; D011948:Receptors, Antigen, T-Cell; D013491:Suppressor Factors, Immunologic; D014301:Trinitrobenzenes