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The Autoimmunity-associated Gene PTPN22 Potentiates Toll-like Receptor-driven, Type 1 Interferon-dependent Immunity

Abstract

Immune cells sense microbial products through Toll-like receptors (TLR), which trigger host defense responses including type 1 interferons (IFNs) secretion. A coding polymorphism in the protein tyrosine phosphatase nonreceptor type 22 (PTPN22) gene is a susceptibility allele for human autoimmune and infectious disease. We report that Ptpn22 selectively regulated type 1 IFN production after TLR engagement in myeloid cells. Ptpn22 promoted host antiviral responses and was critical for TLR agonist-induced, type 1 IFN-dependent suppression of inflammation in colitis and arthritis. PTPN22 directly associated with TNF receptor-associated factor 3 (TRAF3) and promotes TRAF3 lysine 63-linked ubiquitination. The disease-associated PTPN22W variant failed to promote TRAF3 ubiquitination, type 1 IFN upregulation, and type 1 IFN-dependent suppression of arthritis. The findings establish a candidate innate immune mechanism of action for a human autoimmunity "risk" gene in the regulation of host defense and inflammation.

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References
1.
Zarnegar B, Wang Y, Mahoney D, Dempsey P, Cheung H, He J . Noncanonical NF-kappaB activation requires coordinated assembly of a regulatory complex of the adaptors cIAP1, cIAP2, TRAF2 and TRAF3 and the kinase NIK. Nat Immunol. 2008; 9(12):1371-8. PMC: 2676931. DOI: 10.1038/ni.1676. View

2.
Ji H, Pettit A, Ohmura K, Ortiz-Lopez A, Duchatelle V, Degott C . Critical roles for interleukin 1 and tumor necrosis factor alpha in antibody-induced arthritis. J Exp Med. 2002; 196(1):77-85. PMC: 2194010. DOI: 10.1084/jem.20020439. View

3.
Gitlin L, Barchet W, Gilfillan S, Cella M, Beutler B, Flavell R . Essential role of mda-5 in type I IFN responses to polyriboinosinic:polyribocytidylic acid and encephalomyocarditis picornavirus. Proc Natl Acad Sci U S A. 2006; 103(22):8459-64. PMC: 1464000. DOI: 10.1073/pnas.0603082103. View

4.
Zhou S, Cerny A, Zacharia A, Fitzgerald K, Kurt-Jones E, Finberg R . Induction and inhibition of type I interferon responses by distinct components of lymphocytic choriomeningitis virus. J Virol. 2010; 84(18):9452-62. PMC: 2937596. DOI: 10.1128/JVI.00155-10. View

5.
He J, Zarnegar B, Oganesyan G, Saha S, Yamazaki S, Doyle S . Rescue of TRAF3-null mice by p100 NF-kappa B deficiency. J Exp Med. 2006; 203(11):2413-8. PMC: 2118128. DOI: 10.1084/jem.20061166. View