PMID: 9184637Jun 1, 1997Paper

In vitro modulation of human, autoreactive MBP-specific CD4 + T-cell clones by cyclosporin A

Journal of Neuroimmunology
M PetteH F McFarland

Abstract

Cyclosporin A (CsA) is a potent immunosuppressant affecting many components of cellular and humoral immunity. Its main action probably results from inhibition of T-lymphocyte activation and interference with secretion of cytokines like IL-2, IL-4, IFN-gamma and TNF-alpha. Correspondingly, CsA has beneficial effects on the course of several autoimmune diseases thought to be mediated by T-lymphocytes, including a mild effect on multiple sclerosis. We exposed CD4 + cytotoxic T-lymphocytes specific for myelin basic protein, a putative target autoantigen in MS, to CsA in vitro, and determined the drug's effects on proliferation, expression of high affinity IL-2R, secretion of the proinflammatory cytokines IFN-gamma and TNF-alpha as well as on the secretion of the chemokines MIP-1 alpha and MIP-1 beta. In all instances, we observed a partial to complete inhibition. In contrast, the response of activated cells to IL-2 was resistant to CsA. Our observations are in line with results obtained in different experimental systems. The discrepancy between the profound inhibition of T-cells and the modest therapeutic effects on MS is discussed.

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Citations

Jun 5, 2002·Journal of Neuroimmunology·Peter A CalabresiKatharine A Whartenby
Feb 7, 2001·The Journal of Immunology : Official Journal of the American Association of Immunologists·C G LernerJ D Powell

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