title: Induction and characterization of isogeneic anti-idiotypic antibodies to BALB/c myeloma S117: lack of reactivity with major idiotypic determinants.
abstract: Isogeneic anti-idiotypic antibodies were induced by immunization of BALB/c mice with the BALB/c-derived myeloma protein S117 which binds N-acetylglucosamine-containing antigens including Group A streptococcal carbohydrate (A-CHO). Most BALB/c mice produced anti-S 117 idiotypic antibodies, as shown by various different immunization protocols. The antibodies of individual mice were of intermediate to high affinity (2.8 x 10(6) M-1 to 1.4 x 10(8) M-1). In isoelectric focusing, most individual antibodies were shown to consist of a small number of clonotypes, but each mouse produced its own unique set of clones so that the potential clonal repertoire of strain BALB/c is rather large. Most importantly, all isogeneic anti-idiotypic antibodies were directed against idiotypic determinants of S117 that are not shared with induced anti-A-CHO antibodies, whereas it has been shown previously that allogeneic and xenogeneic anti-S 117 idiotypic antibodies react with idiotypic determinants unique to S 117 as well as with those that are shared with anti-A-CHO antibodies. The data suggest that the expression of S 117 idiotypic determinants in strain BALB/c is not under antibody-mediated, anti-idiotypic feedback control.
mesh_terms: D000117:Acetylglucosamine / Q000276:immunology; D000818:Animals; D000915:Antibody Affinity; D000917:Antibody Formation; D000918:Antibody Specificity; D000939:Epitopes; D006241:Haptens / Q000276:immunology; D007113:Immunity, Innate; D007130:Immunoglobulin Idiotypes; D007525:Isoelectric Focusing; D051379:Mice; D008807:Mice, Inbred BALB C; D010954:Plasmacytoma / Q000276:immunology*
chemical_list: D000939:Epitopes; D006241:Haptens; D007130:Immunoglobulin Idiotypes; D000117:Acetylglucosamine