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. 1993 Oct;94(1):134–139. doi: 10.1111/j.1365-2249.1993.tb05990.x

Polynucleotide specificity of anti-reactive oxygen species (ROS) DNA antibodies.

J Ara 1, R Ali 1
PMCID: PMC1534370  PMID: 8403495

Abstract

Hydrogen peroxide in the presence of short wavelength UV light was able to induce alterations in native DNA fragments of 300 bp (ROS-DNA), thereby rendering it immunogenic in experimental animals. The specificity of induced antibodies was investigated by direct binding and competition ELISA. Inhibition studies revealed nearly 89% inhibition in the antibody binding by the immunogen and recognition of native B-, A- and allied conformations presented by various synthetic polynucleotides. Gel retardation assay reiterated the formation of immune complexes between induced antibodies and native and ROS-DNA fragments. It was observed that naturally occurring anti-DNA autoantibodies from systemic lupus erythematosus (SLE) sera recognize ROS-DNA. The comparison of the specificities of anti-DNA autoantibodies from 10 SLE patients showed a 20-50-fold preference for ROS-DNA over native DNA. These results demonstrate that anti-DNA antibodies can be induced by ROS-DNA, and that some of the autoimmune DNA binding antibodies found in SLE may result from response to reactive oxygen species.

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Selected References

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