Autoantibodies, idiotypes, anti-idiotypes and autoimmunity.

The establishment of mouse and human monoclonal anti-DNA antibodies is described. Common idiotypes were identified on these antibodies employing monoclonal (mouse) and polyclonal anti-idiotypic antibodies. The significance of the presence and titer of the common idiotypes as clinical activity marker was examined in patients with systemic lupus erythematosus. Based on Jerne's network theory [Ann. Immunol. 125c: 373-389, 1974], naturally occurring anti-idiotypic antibodies to anti-DNA antibodies were reported. The utilization of this information to understand autoimmunity is discussed.