title: Expression of idiotype on the surface of human B cells producing anti-DNA antibody.
abstract: We analyzed the idiotype (Id) expression on the surface of human anti-DNA antibody-producing cells. Murine monoclonal anti-Id antibodies with a specificity for determinants associated with the antigen-binding sites of human monoclonal anti-DNA autoantibodies were prepared. One anti-Id antibody reacted only with surface Id on anti-ssDNA-producing cells, but not with those on anti-dsDNA-producing B cell clones. Another anti-Id antibody did bind the surface Id on anti-dsDNA clones, but not those on anti-ssDNA clones. The interaction between anti-Id and surface Id was inhibited by pretreatment of the clones with DNA or appropriate polynucleotide antigens, or by preabsorption of anti-Id antibodies with free anti-DNA antibodies. Surface IgM and IgD expressed the same Id as the antibody secreted from the clones. The treatment of Id-positive clones by anti-Id antibody induced the redistribution of surface Id on the cells, indicating that these cells serve as targets for the regulatory action of anti-Id antibody.
mesh_terms: D000818:Animals; D000974:Antibodies, Antinuclear / Q000032:analysis / Q000096:biosynthesis; D000911:Antibodies, Monoclonal / Q000096:biosynthesis* / Q000276:immunology; D000918:Antibody Specificity; D001402:B-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D001666:Binding Sites, Antibody; D001667:Binding, Competitive; D002999:Clone Cells / Q000378:metabolism; D004247:DNA / Q000276:immunology*; D006801:Humans; D007130:Immunoglobulin Idiotypes / Q000032:analysis* / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D011947:Receptors, Antigen, B-Cell / Q000032:analysis*
chemical_list: D000974:Antibodies, Antinuclear; D000911:Antibodies, Monoclonal; D007130:Immunoglobulin Idiotypes; D011947:Receptors, Antigen, B-Cell; D004247:DNA