title: Accessory cell function of Th2 clones.
abstract: We have investigated the ability of T helper clones to serve as accessory cells and in the presence of mitogen activate freshly-isolated, splenic T cells. In this type of costimulatory assay, the Th cells that secrete IL-4 but not the Th cells that secrete IL-2 function as AC to induce T cell proliferation in the presence of various T cell mitogens (Con A, anti-CD3 mAb, anti-TCR mAb, and anti-Thy-1 mAb). The signal provided by the accessory Th2 cells occurred independently of MHC restriction, and the analysis of dose-response curves showed the involvement of a single stimulator cell. CD4, as well as CD8 expressing splenic T cells were induced to proliferate by the Th2 clones and mitogen, but mAb specific for CD4 or CD8 failed to affect the response. These findings indicate that cloned Th2 cells functioned as accessory cells and induced naive T cells to proliferate in the presence of mitogen.
authors.affiliation: Department of Pathology, University of Chicago, IL 60637.
authors.forename: B D
authors.initials: BD
authors.lastname: Evavold
authors.forename: J
authors.initials: J
authors.lastname: Quintans
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000502:physiology; D000938:Antigen-Presenting Cells / Q000145:classification / Q000276:immunology* / Q000502:physiology; D000945:Antigens, Differentiation, T-Lymphocyte / Q000378:metabolism; D017252:CD3 Complex; D002450:Cell Communication; D002999:Clone Cells / Q000145:classification / Q000276:immunology / Q000502:physiology; D004306:Dose-Response Relationship, Immunologic; D005260:Female; D005404:Fixatives; D005557:Formaldehyde; D007135:Immunoglobulin Variable Region / Q000276:immunology; D008213:Lymphocyte Activation; D051379:Mice; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D008934:Mitogens / Q000494:pharmacology; D010641:Phenotype; D011108:Polymers; D011948:Receptors, Antigen, T-Cell / Q000276:immunology / Q000378:metabolism; D006377:T-Lymphocytes, Helper-Inducer / Q000145:classification / Q000276:immunology* / Q000502:physiology
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D017252:CD3 Complex; D005404:Fixatives; D007135:Immunoglobulin Variable Region; D008934:Mitogens; D011108:Polymers; D011948:Receptors, Antigen, T-Cell; D005557:Formaldehyde; C003043:paraform