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- W1548796301 abstract "The incidence of lupus nephritis is low in autoimmune NZB mice, but when they are crossed with normal SWR mice, almost 100% of the female F1 hybrids (SNF1) develop lethal glomerulonephritis. In a previous study we showed that anti-DNA auto-antibodies produced by the SNF1 mice were qualitatively different from those made by the NZB parents with respect to their isotype, charge, and antigenic specificity patterns. Here we studied idiotypic cross-reactions among the 65 monoclonal anti-DNA antibodies that were derived from four NZB and seven SNF1 mice. A library of 15 anti-idiotypic antibodies were prepared by immunizing rabbits with 15 monoclonal anti-DNA antibodies selected from the panel of 65. We identified 10 cross-reactive idiotype (CRI) families among this large collection of autoantibodies. Five of these CRI families were restricted to cationic anti-DNA antibodies that were exclusively of SNF1 origin, and the strongly cross-reacting members were predominantly IgG2b auto-antibodies with the allotype of the normal SWR parent. The cationic anti-DNA CRI families could be grouped into an interrelated cluster called the Id564 cluster. The other five anti-DNA CRI families were not restricted to any particular parental allotype or charge, although two of these CRI were shared exclusively by SNF1-derived autoantibodies and four of these CRI families could also be grouped into an idiotypically interrelated cluster called the Id512 cluster. In the case of seven out of the 10 CRI families, the idiotypic determinants detected were close to the antigen-binding site of the anti-DNA antibodies. The results indicate that the idiotypic repertoire of anti-DNA autoantibodies produced by the SNF1 mice is different from the NZB parents, and potentially pathogenic (cationic) antibodies produced by the SNF1 mice that are encoded by genes from the normal SWR parent can be identified as distinct CRI families. In the accompanying paper we demonstrate the role of these anti-DNA CRI families in the development of lupus nephritis." @default.
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- W1548796301 date "1987-01-01" @default.
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- W1548796301 title "The NZB X SWR model of lupus nephritis. I. Cross-reactive idiotypes of monoclonal anti-DNA antibodies in relation to antigenic specificity, charge, and allotype. Identification of interconnected idiotype families inherited from the normal SWR and the autoimmune NZB parents." @default.
- W1548796301 doi "https://doi.org/10.4049/jimmunol.138.1.128" @default.
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