Abstract
A relatively large number of protein tyrosine phosphatases (PTPs) are known to regulate signaling through the T cell receptor (TCR). Recent human genetics studies have shown that several of these PTPs are encoded by major autoimmunity genes. Here, we will focus on the lymphoid tyrosine phosphatase (LYP), a critical negative modulator of TCR signaling encoded by the PTPN22 gene. The functional analysis of autoimmune-associated PTPN22 genetic variants suggests that genetic variability of TCR signal transduction contributes to the pathogenesis of autoimmunity in humans.
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This work was supported by NIH grant R01AI070544 to N.B. This is publication #1257 from the La Jolla Institute for Allergy and Immunology.
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Stanford, S.M., Mustelin, T.M. & Bottini, N. Lymphoid tyrosine phosphatase and autoimmunity: human genetics rediscovers tyrosine phosphatases. Semin Immunopathol 32, 127–136 (2010). https://doi.org/10.1007/s00281-010-0201-4
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DOI: https://doi.org/10.1007/s00281-010-0201-4