Abstract:
:Interleukin 17 (IL-17) is important in infection and autoimmunity; how it signals remains poorly understood. In this study, we identified the ubiquitin-specific protease USP25 as a negative regulator of IL-17-mediated signaling and inflammation. Overexpression of USP25 inhibited IL-17-triggered signaling, whereas USP25 deficiency resulted in more phosphorylation of the inhibitor IκBα and kinase Jnk and higher expression of chemokines and cytokines, as well as a prolonged half-life for chemokine CXCL1-encoding mRNA after treatment with IL-17. Consistent with that, Usp25(-/-) mice showed greater sensitivity to IL-17-dependent inflammation and autoimmunity in vivo. Mechanistically, stimulation with IL-17 induced the association of USP25 with the adaptors TRAF5 and TRAF6, and USP25 induced removal of Lys63-linked ubiquitination in TRAF5 and TRAF6 mediated by the adaptor Act1. Thus, our results demonstrate that USP25 is a deubiquitinating enzyme (DUB) that negatively regulates IL-17-triggered signaling.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Zhong B,Liu X,Wang X,Chang SH,Liu X,Wang A,Reynolds JM,Dong Cdoi
10.1038/ni.2427subject
Has Abstractpub_date
2012-11-01 00:00:00pages
1110-7issue
11eissn
1529-2908issn
1529-2916pii
ni.2427journal_volume
13pub_type
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