title: Murine anti-TNP antibodies positive for either lambda 1 or lambda 2 light chains express common idiotypic determinants.
abstract: Although the lambda-bearing antibodies represent only 5% of the total mouse serum immunoglobulins, some antigens such as B1355 dextran (alpha (1-3)Dex), the 4-hydroxy-3-nitrophenyl acetyl (NP) and 2,4-dinitro or 2,4,6-trinitrophenyl (DNP/TNP) antigens can induce lambda-positive immune responses. In contrast to the lambda antibody response against alpha (1-3)Dex and NP antigens which is restricted to the lambda 1 isotype it was shown that the response to the DNP (or TNP) antigen uses lambda 1 and lambda 2 and lambda 3 isotypes. The idiotypy of the alpha (1-3)Dex and NP systems has been well characterized contrary to that of the lambda-positive anti-TNP/DNP response which has been poorly studied. In this paper, we describe two idiotopes (Id C19-3 and Id D11-2) shared by two BALB/c monoclonal anti-TNP antibodies (TNP5 and TNP9) which, respectively, use the lambda 1 and lambda 2 light chains. These idiotopes were independently expressed on other monoclonal anti-TNP/DNP antibodies and appear to require the use of a unique VH gene associated with a particular V lambda region. After TNP-Ficoll immunization, BALB/c mice recurrently express both idiotopes on lambda 1 and (lambda 2 + lambda 3) anti-TNP antibodies. In addition, all the mouse strains immunized against TNP-Ficoll give a lambda 1- and (lambda 2 + lambda 3)-positive immune response with the exception of SJL and SJA strains which present a deficit for the expression of lambda 1 light chain. The expression of Id C19-3 was restricted to the strains with the Igh-Va allotypic haplotype (including SJA) whereas the Id D11-2 was extensively expressed in the various strains.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D000918:Antibody Specificity; D001483:Base Sequence; D005362:Ficoll / Q000031:analogs & derivatives / Q000276:immunology; D007130:Immunoglobulin Idiotypes / Q000032:analysis*; D007135:Immunoglobulin Variable Region / Q000235:genetics; D007146:Immunoglobulin lambda-Chains / Q000032:analysis*; D051379:Mice; D008815:Mice, Inbred Strains; D008969:Molecular Sequence Data; D009578:Nitrobenzenes / Q000276:immunology*; D012313:RNA / Q000032:analysis; D014301:Trinitrobenzenes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D007130:Immunoglobulin Idiotypes; D007135:Immunoglobulin Variable Region; D007146:Immunoglobulin lambda-Chains; D009578:Nitrobenzenes; C020529:TNP-ficoll; D014301:Trinitrobenzenes; D005362:Ficoll; D012313:RNA