title: The repertoire of anti-TNP antibodies in mice neonatally suppressed with anti-IgM.
abstract: Previous studies have shown that mice immunized with TNP-Ficoll when young, adult, or aged expressed different repertoires of anti-TNP antibodies. The aim of the present study was to find out whether this age-related nonrandom progression was driven by antigen, and whether it was regulated by the immune network through surface-Ig receptors on B lymphocytes. The approach utilized was to block receptor expression on B lymphocytes of mice by the chronic administration of anti-IgM from birth for approximately 1 year, and then compare their subsequent antibody response to that of age-matched control animals. The results obtained have shown that the age-dependent shift in the anti-TNP repertoire expressed could take place in animals whose B lymphocytes were blind to antigen and anti-id for the greater part of their lives and thus suggest that the regulatory events responsible for this shift may be (surface Ig) receptor independent.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000276:immunology; D000906:Antibodies / Q000145:classification / Q000276:immunology*; D000888:Antibodies, Anti-Idiotypic / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D005362:Ficoll / Q000031:analogs & derivatives / Q000276:immunology; D007114:Immunization; D007070:Immunoglobulin A / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis / Q000276:immunology*; D007165:Immunosuppression Therapy; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D014301:Trinitrobenzenes / Q000276:immunology
chemical_list: D000906:Antibodies; D000888:Antibodies, Anti-Idiotypic; D007070:Immunoglobulin A; D007075:Immunoglobulin M; C020529:TNP-ficoll; D014301:Trinitrobenzenes; C044203:anti-IgM; D005362:Ficoll