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1.  Defective Aire-Dependent Central Tolerance to P0 Is Linked to Autoimmune Peripheral Neuropathy 
Chronic Inflammatory Demyelinating Polyneuropathy is a debilitating autoimmune disease characterized by peripheral nerve demyelination and dysfunction. How the autoimmune response is initiated, identity of provoking antigens, and pathogenic effector mechanisms are not well-defined. The Autoimmune Regulator (Aire) plays a critical role in central tolerance by promoting thymic expression of self-antigens and deletion of self-reactive T cells. Here, we utilized mice with hypomorphicAire function and two patients with Aire mutations to define how Aire deficiency results in spontaneous autoimmune peripheral neuropathy. Autoimmunity against peripheral nerves in both mice and humans targets Myelin Protein Zero (P0), an antigen whose expression is Aire-regulated in the thymus. Consistent with a defect in thymic tolerance, CD4+ T cells are sufficient to transfer disease in mice and produce IFN-gamma in infiltrated peripheral nerves. Our findings suggest that defective Aire-mediated central tolerance to P0 initiates an autoimmune Th1 effector response toward peripheral nerves.
PMCID: PMC3579634  PMID: 22490868

Results 1-2 (2)