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. 1983 Feb;80(3):850–854. doi: 10.1073/pnas.80.3.850

Use of monoclonal antibodies to identify shared idiotypes on human antibodies to native DNA from patients with systemic lupus erythematosus.

G Solomon, J Schiffenbauer, H D Keiser, B Diamond
PMCID: PMC393478  PMID: 6187005

Abstract

Antinative DNA antibodies were purified from the serum of a patient with active systemic lupus erythematosus. Using hybridoma technology, we produced several mouse monoclonal antibodies directed against idiotypic determinants on these antinative DNA antibodies. One of these monoclonal anti-idiotypic antibodies, 3I, an IgG2a Kappa, was extensively characterized. 3I is believed to be directed against an idiotypic determinant because (i) its reactivity with antinative DNA antibodies is not inhibited by a large excess of pooled human serum, (ii) it reacts with F(ab')2 fragments of antinative DNA antibodies, and (iii) it reacts with antinative DNA antibodies of all IgG subclasses. 3I is not directed against the antigen binding site in that native DNA and 3I do not compete for binding to antinative DNA antibodies. Eight of nine sera containing antinative DNA activity as determined by the Millipore filter assay reacted with 3I in a solid-phase radioimmunoassay. These findings suggest that antinative DNA antibodies from nonrelated patients with systemic lupus erythematosus share a common idiotype.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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