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  • Title: Epitope spread is not critical for the relapse and progression of MOG 8-21 induced EAE in Biozzi ABH mice.
    Author: Smith PA, Morris-Downes M, Heijmans N, Pryce G, Arter E, O'Neill JK, 't Hart B, Baker D, Amor S.
    Journal: J Neuroimmunol; 2005 Jul; 164(1-2):76-84. PubMed ID: 15927270.
    Abstract:
    Emerging autoimmunity (epitope-spreading) generated as a consequence of myelin damage is suggested to underlie the relapses in multiple sclerosis (MS). Myelin oligodendrocyte glycoprotein (MOG 8-21) induces relapsing EAE in ABH mice characterized by broadening of the autoimmune reportoire. Despite epitope spreading tolerance to the priming antigen, but not emerging epitope reactivities, resulted in long-term inhibition of clinical relapse. In contrast, spinal cord homogenate induced EAE was dominated by a proteolipid protein (PLP 56-70) autoreactivity despite the plethora of CNS antigens in the immunogen. This data suggests that during relapsing-remitting demyelinating disease the pathogenic process is dominated by the initiating antigen, with only a minor role played by emerging T-cell populations. These findings may have important implications for the efficacy of antigen-based immune therapies in autoimmune disorders.
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