title: Concanavalin A-induced interferon gamma production by murine spleen cells and T cell lines. Lack of correlation with Lyt 1,2 phenotype.
abstract: Concanavalin A(Con A)-induced interferon-gamma (IFN gamma) production by resting or preactivated murine spleen cells negatively selected with monoclonal antibodies specific for Lyt 1,2 antigens plus complement (C) and by interleukin 2(IL-2)-dependent T cell lines of different Lyt phenotype was studied. The data show that most of the IFN-gamma produced upon stimulation of resting spleen cells was a product of Lyt 1+2+ cells. Lyt 1-2+ cells were negative for IFN gamma production. When spleen cells that had been preactivated for 3 days with Con A were restimulated with Con A, Lyt 1+2+, Lyt 1+2- as well as Lyt 1-2+ cells produced IFN gamma in a relationship of approximately 5:3:1. In both cases the picture remained unaltered independently when the supernatants were harvested after 1, 3 or 5 days. Furthermore, two IL-2 dependent T cell lines were studied in regard to Con A-induced IFN gamma production. Line 1.3 was Thy 1+, Lyt 1-2+, whereas line 20.9. was Thy 1+, Lyt 1+2-. Both lines produced initially high titers of IFN gamma upon stimulation with Con A. After prolonged passage in vitro, however, they progressively lost the capacity to produce IFN gamma.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D002460:Cell Line; D002478:Cells, Cultured; D003165:Complement System Proteins / Q000276:immunology; D003208:Concanavalin A / Q000494:pharmacology*; D005455:Fluorescent Antibody Technique; D007074:Immunoglobulin G / Q000032:analysis; D007369:Interferon Inducers; D007371:Interferon-gamma / Q000096:biosynthesis*; D007376:Interleukin-2 / Q000276:immunology; D051379:Mice; D008810:Mice, Inbred C57BL; D010641:Phenotype; D013154:Spleen / Q000166:cytology / Q000276:immunology / Q000378:metabolism*; D013601:T-Lymphocytes / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D007074:Immunoglobulin G; D007369:Interferon Inducers; D007376:Interleukin-2; D003208:Concanavalin A; D007371:Interferon-gamma; D003165:Complement System Proteins