Nucleosome-restricted antibodies are detected before anti-dsDNA and/or antihistone antibodies in serum of MRL-Mp lpr/lpr and +/+ mice, and are present in kidney eluates of lupus mice with proteinuria - PubMed (original) (raw)

Nucleosome-restricted antibodies are detected before anti-dsDNA and/or antihistone antibodies in serum of MRL-Mp lpr/lpr and +/+ mice, and are present in kidney eluates of lupus mice with proteinuria

Z Amoura et al. Arthritis Rheum. 1994 Nov.

Abstract

Objective: To compare the humoral response to nucleosomes with the response to their individual components (double-stranded DNA [dsDNA] and histones) and to assess the involvement of antinucleosome antibodies in immune deposits in the kidney of MRL mice.

Methods: We used enzyme-linked immunosorbent assays of sera and kidney eluates for antibody activity against purified nucleosomes, dsDNA, and histones.

Results: Antinucleosome antibodies emerged before anti-dsDNA and antihistone antibodies. A fraction of antinucleosome antibodies reacted exclusively with nucleosomes and not with their components, dsDNA and histones. These nucleosome-restricted antibodies were detected in the proteinuric MRL mouse kidney eluate.

Conclusion: Our findings support the notion that nucleosomes play a major role in the emergence of antinuclear autoantibodies and that antinucleosome antibodies might be involved in the nephritogenic process in murine lupus.

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