Autoimmune-associated lymphoid tyrosine phosphatase is a gain-of-function variant

Vang, Torkel and Congia, Mauro and Macis, Maria Doloretta and Musumeci, Lucia and Orrù, Valeria and Zavattari, Patrizia and Nika, Konstantina and Tautz, Lutz and Taskén, Kjetil and Cucca, Francesco and Mustelin, Tomas and Bottini, Nunzio (2005) Autoimmune-associated lymphoid tyrosine phosphatase is a gain-of-function variant. Nature Genetics, Vol. 37 (12), p. 1317-1319. eISSN 1546-1718. Article.

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DOI: 10.1038/ng1673

Abstract

A SNP in the gene PTPN22 is associated with type 1 diabetes, rheumatoid arthritis, lupus, Graves thyroiditis, Addison disease and other autoimmune disorders. T cells from carriers of the predisposing allele produce less interleukin-2 upon TCR stimulation, and the encoded phosphatase has higher catalytic activity and is a more potent negative regulator of T lymphocyte activation. We conclude that the autoimmune-predisposing allele is a gain-of-function mutant.

Item Type:	Article
ID Code:	4197
Status:	Published
Refereed:	Yes
Uncontrolled Keywords:	Single-nucleotide polymorphism, t-cells, gene, PTPN22, arthritis, mutation, disease, mice, pep
Subjects:	Area 06 - Scienze mediche > MED/03 Genetica medica
Divisions:	001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
Publisher:	Nature Publishing Group
eISSN:	1546-1718
Deposited On:	16 Jul 2010 12:20

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