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Eur J Immunol. 2000 Jan;30(1):254-61.

Comparable heavy and light chain pairings in normal and systemic lupus erythematosus IgG(+) B cells.

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1
Department of Biochemistry University of Nijmegen, Nijmegen, The Netherlands. rdw@mrc-lmb.cam.ac.uk

Abstract

Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterized by the presence of high immunoglobulin serum titers, but the mechanism by which these arise remains unclear. It has been suggested that the disease is associated with specific antibody features, including variable gene use, the presence of charged complementarity-determining region residues and/or an aberrant process of secondary light chain rearrangement. To study this in more detail, we compared variable, diversity and joining gene segment use, somatic mutation, and heavy and light chain pairings in single peripheral IgG(+) B cells between one normal (209 B cells) and two SLE (156 B cells) donors. In contrast to others, we found no systematic differences, indicating that the memory B cell repertoires in normal and SLE donors are shaped in a similar way.

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