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J. Exp. Med.,
Volume 187, Number 9, May 4, 1998 1543-1548
By



From the * Microbiology and Tumorbiology Center, Karolinska Institute, S-171 77 Stockholm,
Sweden; the We explore here if vaccination with DNA encoding an autoantigenic peptide can suppress autoimmune disease. For this purpose we used experimental autoimmune encephalomyelitis
(EAE), which is an autoaggressive disease in the central nervous system and an animal model
for multiple sclerosis. Lewis rats were vaccinated with DNA encoding an encephalitogenic T
cell epitope, guinea pig myelin basic protein peptide 68-85 (MBP68-85), before induction of
EAE with MBP68-85 in complete Freund's adjuvant. Compared to vaccination with a control
DNA construct, the vaccination suppressed clinical and histopathological signs of EAE, and reduced the interferon
Neuroimmunology Unit, Center for Molecular Medicine, Karolinska Hospital, S-171
76 Stockholm, Sweden; and the § Neurological Institute, University of Vienna, A-1090 Vienna, Austria
production after challenge with MBP68-85. Targeting of the gene product to Fc of IgG was essential for this effect. There were no signs of a Th2 cytokine bias.
Our data suggest that DNA vaccines encoding autoantigenic peptides may be useful tools in
controlling autoimmune disease.
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