Antigen-induced strain-specific autoantiidiotypic antibodies modulate the immune response to dextran B 512.
Sera from CBA and C57BL mice immunized against dextran B 512 eight or more days earlier contain mainly IgG antibodies that specifically suppress the development of plaque-forming cells against dextran in vitro. Suppression was not caused by antibodies against the alpha 1-6 epitope of dextran to any major extent. Sera from CBA mice (IgCH allotype j) suppressed plaque-forming cells from CBA mice, whereas sera from C57BL mice (allotype b) inhibited plaques from C57BL and CBA/Ig-1b mice. Sera from dextran-tolerant mice or from mice that are genetic unresponders to dextran did not suppress plaque-forming cells. Both thymus-independent and thymus-dependent forms of dextran induced the appearance of these autoantiidiotypic antibodies that can distinguish between anti-alpha 1-6 antibodies produced in mouse strains having different IgCH-locus-determined allotypes.
D000818:Animals; D000888:Antibodies, Anti-Idiotypic; D000917:Antibody Formation; D000918:Antibody Specificity; D003911:Dextrans / Q000276:immunology*; D000939:Epitopes; D005802:Genes, MHC Class II; D007108:Immune Tolerance; D007130:Immunoglobulin Idiotypes; D051379:Mice; D008815:Mice, Inbred Strains; D013045:Species Specificity; D013601:T-Lymphocytes / Q000276:immunology
D000888:Antibodies, Anti-Idiotypic; D003911:Dextrans; D000939:Epitopes; D007130:Immunoglobulin Idiotypes