The role of cytokines in polymyositis: interferon-gamma induces class II and enhances class I major histocompatibility complex antigen expression on cultured human muscle cells.
Kalovidouris, AE
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Aberrant expression of class II major histocompatibility complex molecules has been found on target cells of various autoimmune diseases, including muscle fibers in patients with polymyositis-dermatomyositis. In this study the effects of a number of recombinant human cytokines, individually and in combination, on class I and class II molecule expression by cultured human muscle cells were examined with monoclonal antibodies and an immunoperoxidase technique. The following cytokines were tested: interferon-gamma, tumor necrosis factor-alpha, tumor necrosis factor-beta, interleukin-2, interleukin-1 alpha and interleukin-1 beta. Only IFN-gamma induced expression of class II molecules in muscle cells. It also enhanced the preexisting class I molecule expression by muscle cells. These findings suggest that IFN-gamma is involved in the aberrant expression of major histocompatibility complex molecules in the affected muscles of patients with polymyositis-dermatomyositis.
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. J Lab Clin Med
120(2):244-51
1992
http://www.ncbi.nlm.nih.gov/pubmed/1500823
