Behavior of the idiotypic network in conventional immune responses. II. Affinity and heterogeneity of idiotypic and anti-idiotypic antibodies following immunization with T-independent and T-dependent antigens. 1992

M Segre, and R M Weigel, and A J Schlueter, and D Segre
Department of Veterinary Pathobiology, University of Illinois, Urbana 61801.

The relative affinity and heterogeneity of affinity of idiotypic and anti-idiotypic antibodies in mice immunized with the T-independent antigen DNP-Ficoll and the T-dependent antigen DNP-HGG were measured by a plaque inhibition assay. Idiotypic plaque-forming cells (PFC) were detected by a conventional assay utilizing DNP-coated SRBC. Anti-idiotypic PFC were detected with SRBC coated with affinity-purified anti-DNP antibody of rabbit origin. It was found that both idiotypic and anti-idiotypic antibodies elicited by immunization with the T-independent antigen had lower affinity and were less heterogeneous than the corresponding antibodies originating in mice immunized with the T-dependent antigen. In addition, the affinity and heterogeneity values of the idiotypic antibodies were correlated with the affinity and heterogeneity values of the anti-idiotypic antibodies from the same mice. This finding indicates that idiotypic and anti-idiotypic antibodies mutually regulate each other, thus pointing to internal immunoregulatory effects of the idiotypic network with respect to these parameters.

UI MeSH Term Description Entries
D007114 Immunization Deliberate stimulation of the host's immune response. ACTIVE IMMUNIZATION involves administration of ANTIGENS or IMMUNOLOGIC ADJUVANTS. PASSIVE IMMUNIZATION involves administration of IMMUNE SERA or LYMPHOCYTES or their extracts (e.g., transfer factor, immune RNA) or transplantation of immunocompetent cell producing tissue (thymus or bone marrow). Immunologic Stimulation,Immunostimulation,Sensitization, Immunologic,Variolation,Immunologic Sensitization,Immunological Stimulation,Sensitization, Immunological,Stimulation, Immunologic,Immunizations,Immunological Sensitization,Immunological Sensitizations,Immunological Stimulations,Sensitizations, Immunological,Stimulation, Immunological,Stimulations, Immunological,Variolations
D007130 Immunoglobulin Idiotypes Unique genetically-controlled determinants present on ANTIBODIES whose specificity is limited to a single group of proteins (e.g., another antibody molecule or an individual myeloma protein). The idiotype appears to represent the antigenicity of the antigen-binding site of the antibody and to be genetically codetermined with it. The idiotypic determinants have been precisely located to the IMMUNOGLOBULIN VARIABLE REGION of both immunoglobin polypeptide chains. Idiotypes, Immunoglobulin,Ig Idiotypes,Idiotype, Ig,Idiotype, Immunoglobulin,Idiotypes, Ig,Ig Idiotype,Immunoglobulin Idiotype
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D005260 Female Females
D005362 Ficoll A sucrose polymer of high molecular weight.
D005719 gamma-Globulins Serum globulins that migrate to the gamma region (most positively charged) upon ELECTROPHORESIS. At one time, gamma-globulins came to be used as a synonym for immunoglobulins since most immunoglobulins are gamma globulins and conversely most gamma globulins are immunoglobulins. But since some immunoglobulins exhibit an alpha or beta electrophoretic mobility, that usage is in decline. gamma-Globulin,gamma Globulin,gamma Globulins
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000888 Antibodies, Anti-Idiotypic Antibodies which react with the individual structural determinants (idiotopes) on the variable region of other antibodies. Anti-Antibodies,Anti-Idiotype Antibodies,Antibodies, Internal Image,Antigamma Globulin Antibodies,Antiglobulins,Anti Antibodies,Anti-gamma Globulin Antibodies,Anti Idiotype Antibodies,Anti gamma Globulin Antibodies,Anti-Idiotypic Antibodies,Antibodies, Anti,Antibodies, Anti Idiotypic,Antibodies, Anti-Idiotype,Antibodies, Anti-gamma Globulin,Antibodies, Antigamma Globulin,Globulin Antibodies, Anti-gamma,Globulin Antibodies, Antigamma,Image Antibodies, Internal,Internal Image Antibodies
D000915 Antibody Affinity A measure of the binding strength between antibody and a simple hapten or antigen determinant. It depends on the closeness of stereochemical fit between antibody combining sites and antigen determinants, on the size of the area of contact between them, and on the distribution of charged and hydrophobic groups. It includes the concept of "avidity," which refers to the strength of the antigen-antibody bond after formation of reversible complexes. Affinity, Antibody,Antibody Avidity,Avidity, Antibody,Affinities, Antibody,Antibody Affinities,Antibody Avidities,Avidities, Antibody
D000918 Antibody Specificity The property of antibodies which enables them to react with some ANTIGENIC DETERMINANTS and not with others. Specificity is dependent on chemical composition, physical forces, and molecular structure at the binding site. Antibody Specificities,Specificities, Antibody,Specificity, Antibody

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