Human monoclonal striational autoantibodies isolated from thymic B lymphocytes of patients with myasthenia gravis use VH and VL gene segments associated with the autoimmune repertoire Academic Article uri icon


MeSH Major

  • Antibodies, Monoclonal
  • Autoantibodies
  • B-Lymphocytes
  • Genes, Immunoglobulin
  • Immunoglobulin Heavy Chains
  • Immunoglobulin Light Chains
  • Immunoglobulin Variable Region
  • Muscles
  • Myasthenia Gravis
  • Protein Kinases


  • The production of autoantibodies reactive with components of skeletal muscle is characteristic of myasthenia gravis (MG) and is strongly associated with the presence of thymic epithelial tumors in patients with MG. The nucleotide sequences of the heavy and light chain variable regions (VH and VL) of three human monoclonal striated muscle antibodies (StrAb) isolated from thymic B lymphocyte lines from two patients with MG and thymoma were analyzed. The VH and VL gene segments used by these anti-striated muscle antibodies appear to be derived from the same repertoire of gene segments as have been found in other autoantibodies isolated from patients with a number of different autoimmune diseases. While the IgM StrAb SA-1A is a direct copy of germ-line VH and VL gene segments, analysis of the IgG StrAb SA-4A and SA-4B, which may be more representative of antibodies found in the serum of MG patients, suggests that the processes of antigenic selection and somatic mutation may contribute to the generation of autoantibodies in MG.

publication date

  • January 1992



  • Academic Article



  • eng

Digital Object Identifier (DOI)

  • 10.1002/eji.1830220908

PubMed ID

  • 1516616

Additional Document Info

start page

  • 2231

end page

  • 6


  • 22


  • 9