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J. Exp. Med.
© The Rockefeller University Press
0022-1007/97/07/159/06 $2.00
Volume 186, Number 1, July 7, 1997 159-164

BRIEF DEFINITIVE REPORT:
Treatment of Experimental Autoimmune Encephalomyelitis with Genetically Modified Memory T Cells

By Peter M. Mathisen,* Min Yu,* Justin M. Johnson,* Judith A. Drazba,Dagger and Vincent K. Tuohy*

From * The Cleveland Clinic Foundation, Research Institute, Department of Immunology, FFb-1, and Dagger  The Cleveland Clinic Confocal Core Facility, Cleveland, Ohio 44195

The migratory properties of memory T cells provide a model vector system for site-specific delivery of therapeutic transgene factors to autoimmune inflammatory lesions. Lymph node cells from (SWR×SJL)F1 mice immunized with the p139-151 determinant of myelin proteolipid protein (PLP) were transfected with a DNA construct that placed the anti-inflammatory cytokine interleukin-10 (IL-10) cDNA under control of an antigen-inducible IL-2 promoter region. Isolated T cell clones demonstrated antigen-inducible expression of transgene IL-10 and expressed cell surface markers consistent with the phenotype of normal memory T cells. Upon adoptive transfer, transfected T cell clones were able to inhibit onset of experimental autoimmune encephalomyelitis (EAE) and to treat EAE animals therapeutically after onset of neurologic signs. Semiquantitative immunocytochemistry showed a significant correlation between decreased demyelination and treatment with the transfected T cells. Taken together, these data indicate the autoreactive T cells can be genetically designed to produce therapeutic factors in an antigen-inducible manner resulting in a decreased severity of clinical and histological autoimmune demyelinating disease.


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