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  • Title: Tolerance induction to myelin basic protein by intravenous synthetic peptides containing epitope P85 VVHFFKNIVTP96 in chronic progressive multiple sclerosis.
    Author: Warren KG, Catz I, Wucherpfennig KW.
    Journal: J Neurol Sci; 1997 Nov 06; 152(1):31-8. PubMed ID: 9395124.
    Abstract:
    Peptide-based tolerance induction may be useful for antigen-specific immunotherapy of human autoimmune diseases. Induction of tolerance to myelin basic protein (MBP) was examined in a Phase I clinical trial in multiple sclerosis (MS) patients with chronic progressive disease using a peptide that is immunodominant for MBP specific T cells and B cells. Tolerance induction was monitored by quantification of MBP specific autoantibodies in cerebrospinal fluid (CSF). The route of peptide administration was important since only intravenous but not intrathecal or subcutaneous injection induced tolerance to MBP. Following a single intravenous injection of a peptide containing epitope P85VVHFFKNIVTP96, MBP autoantibodies were undetectable for three to four months. Tolerance was more prolonged following a second injection since autoantibodies were low or undetectable after one year in the majority of patients. Duration of tolerance to MBP depended on MHC class II haplotypes of patients; tolerance was long-lived in all patients with disease associated HLA-DR2. No neurological or systemic side effects were observed, regardless of the route of peptide administration. These data demonstrate that intravenous administration of a soluble peptide can result in long-lasting tolerance to an autoantigen in humans.
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