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Idiotypic network: the MOPC 460 system

P A Cazenave, C Le Guern, C Bona

    Progress in Clinical and Biological Research
    |January 1, 1980
    PubMed
    Summary
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    Mice with the IghCa haplotype can produce anti-TNP antibodies sharing specific idiotypic determinants. These specific genes exist in other strains and can be activated, with T cells regulating their expression in BALB/c mice.

    Area of Science:

    • Immunology
    • Genetics

    Background:

    • The IghCa haplotype influences antibody production.
    • Idiotypic determinants are unique antibody features.

    Purpose of the Study:

    • To investigate the genetic basis of anti-TNP antibody idiotypes.
    • To explore the regulation of silent antibody clones.

    Main Methods:

    • Analysis of anti-TNP antibody production in mice with different haplotypes.
    • Immunological stimulation to activate silent clones.
    • Hybridoma technology for preserving antibody-producing cells.
    • T cell-mediated regulation studies in BALB/c mice.

    Main Results:

    • Mice with the IghCa haplotype produce anti-TNP antibodies with shared idiotypic determinants (Id) with M460 myeloma protein.

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  • The genes encoding this specificity are present in mice lacking the IghCa haplotype.
  • Silent clones expressing 460 Id can be stimulated and preserved in hybridomas.
  • T cells specific for 460 Id regulate the expression of 460 Id positive anti-TNP antibody-forming cells in BALB/c mice.

    • Conclusions:

    • Antibody idiotypic specificities can be encoded by genes present in non-expressing mouse strains.
    • Silent antibody clones can be immunologically activated and maintained.
    • T cell populations play a crucial role in regulating the expression of specific antibody idiotypes.