The Journal of Experimental Medicine
Keystone Symposia
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J. Exp. Med., Volume 187, Number 9, May 4, 1998 1543-1548

BRIEF DEFINITIVE REPORT:
Vaccination with DNA Encoding an Immunodominant Myelin Basic Protein Peptide Targeted to Fc of Immunoglobulin G Suppresses Experimental Autoimmune Encephalomyelitis

By Anna Lobell,* Robert Weissert,Dagger Maria K. Storch,§ Cecilia Svanholm,* Katrien L. de Graaf,Dagger Hans Lassmann,§ Roland Andersson,* Tomas Olsson,Dagger and Hans Wigzell*

From the * Microbiology and Tumorbiology Center, Karolinska Institute, S-171 77 Stockholm, Sweden; the Dagger  Neuroimmunology Unit, Center for Molecular Medicine, Karolinska Hospital, S-171 76 Stockholm, Sweden; and the § Neurological Institute, University of Vienna, A-1090 Vienna, Austria

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 gamma  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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