Switch from hapten-specific immunoglobulin M to immunoglobulin D secretion in a hybrid mouse cell line - PubMed (original) (raw)

Switch from hapten-specific immunoglobulin M to immunoglobulin D secretion in a hybrid mouse cell line

M S Neuberger et al. Proc Natl Acad Sci U S A. 1981 Feb.

Abstract

From a hybrid mouse cell line (B1-8) that secreted an IgM, lambda 1 anti-(4-hydroxy-3-nitrophenyl)acetyl antibody but that had no detectable surface IgM, selection for a variant with lambda 1 chains on the surface resulted in the isolation of a line that had switched from mu to delta expression. The surface and secreted Igs of this line were typed as IgD with two monoclonal antibodies, and the parental IgM and variant IgD molecules carried the same variable regions as judged by hapten-binding and idiotypic analysis. The surface and secreted delta chains of the IgD variant have apparent molecular weights of 64,000 and 61,000, respectively. However, the unglycosylated secreted delta polypeptide chain has a molecular weight of only 44,000. The secreted IgD exists predominantly in the delta 2 lambda A2 form, does not contain J protein, is relatively stable in serum, and does not fix complement.

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References

    1. J Immunol. 1979 Sep;123(3):1155-61 - PubMed
    1. J Exp Med. 1965 Jan 1;121:171-84 - PubMed
    1. Biochem Biophys Res Commun. 1971 Jul 16;44(2):390-5 - PubMed
    1. Anal Biochem. 1974 Jul;60(1):149-52 - PubMed
    1. J Immunol Methods. 1975 Apr;7(1):25-38 - PubMed

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