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Research Article Free access | 10.1172/JCI119111

Repertoire cloning of lupus anti-DNA autoantibodies.

P Roben, S M Barbas, L Sandoval, J M Lecerf, B D Stollar, A Solomon, and G J Silverman

The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

Find articles by Roben, P. in: PubMed | Google Scholar

The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

Find articles by Barbas, S. in: PubMed | Google Scholar

The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

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The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

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The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

Find articles by Stollar, B. in: PubMed | Google Scholar

The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

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The Sam and Rose Stein Institute for Research on Aging and the Theodore Gildred Cancer Center, Department of Medicine, University of California, San Diego, La Jolla 92093, USA.

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Published December 15, 1996 - More info

Published in Volume 98, Issue 12 on December 15, 1996
J Clin Invest. 1996;98(12):2827–2837. https://doi.org/10.1172/JCI119111.
© 1996 The American Society for Clinical Investigation
Published December 15, 1996 - Version history
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Abstract

To investigate the autoantibody repertoire associated with SLE, we have created phage display IgG Fab libraries from two clinically active SLE patients and from the healthy identical twin of one of these patients. The libraries from the lupus discordant twins were found to both include unusually large representations of the V(H)5 gene family. By panning with DNA, the SLE libraries each yielded IgG anti-double-stranded (ds) DNA autoantibodies, which are characteristic of lupus disease. These included a V(H)5 autoantibody from the affected twin, that has a targeted cluster of mutations that potentially improves binding affinity. The recovered IgG anti-dsDNA autoantibodies expressed the same idiotypes associated with the in vivo IgG anti-dsDNA response of the respective SLE donor. Heavy-light chain shuffling experiments demonstrated a case in which the in vitro creation of anti-dsDNA binding activity required restrictive pairing of a heavy chain with Vlambda light chains similar to those in circulating anti-dsDNA autoantibodies. By contrast, IgG anti-ds autoantibodies could not be recovered from the library from the healthy twin, or from shuffled libraries with heavy chains from the healthy twin. These repertoire analyses illustrate how inheritance and somatic processes interplay to produce lupus-associated IgG autoantibodies.

Version history
  • Version 1 (December 15, 1996): No description

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