title: The role of antigen in the activation of regulatory T cells by immune B cells.
abstract: The transfer of B cells from mice immunized with Type III pneumococcal polysaccharide (SSS-III) results in the activation of suppressor and amplifier T cells that control the magnitude of the antibody response in recipient mice, immunized subsequently with SSS-III. Prior treatment of transferred B cells with an excess of enzyme (polysaccharide depolymerase) capable of hydrolyzing SSS-III, does not alter the capacity of these cells to activate regulatory T cells. These findings indicate that the activation of regulatory T cells by immune B cells is not mediated by residual antigen on the surface of transferred cells.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D004306:Dose-Response Relationship, Immunologic; D005260:Female; D006026:Glycoside Hydrolases / Q000378:metabolism; D007108:Immune Tolerance; D007116:Immunization, Passive; D008211:Lymphocyte Cooperation; D051379:Mice; D008807:Mice, Inbred BALB C; D011135:Polysaccharides, Bacterial / Q000276:immunology; D013329:Structure-Activity Relationship; D013601:T-Lymphocytes / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D011135:Polysaccharides, Bacterial; D006026:Glycoside Hydrolases; C022562:capsular-polysaccharide galactohydrolase