Identification of a Long Noncoding RNA TRAF3IP2-AS1 as Key Regulator of IL-17 Signaling through the SRSF10-IRF1-Act1 Axis in Autoimmune Diseases

J Immunol. 2021 May 15;206(10):2353-2365. doi: 10.4049/jimmunol.2001223. Epub 2021 May 3.

Abstract

IL-17A plays an essential role in the pathogenesis of many autoimmune diseases, including psoriasis and multiple sclerosis. Act1 is a critical adaptor in the IL-17A signaling pathway. In this study, we report that an anti-sense long noncoding RNA, TRAF3IP2-AS1, regulates Act1 expression and IL-17A signaling by recruiting SRSF10, which downregulates the expression of IRF1, a transcriptional factor of Act1. Interestingly, we found that a psoriasis-susceptible variant of TRAF3IP2-AS1 A4165G (rs13210247) is a gain-of-function mutant. Furthermore, we identified a mouse gene E130307A14-Rik that is homologous to TRAF3IP2-AS1 and has a similar ability to regulate Act1 expression and IL-17A signaling. Importantly, treatment with lentiviruses expressing E130307A14-Rik or SRSF10 yielded therapeutic effects in mouse models of psoriasis and experimental autoimmune encephalomyelitis. These findings suggest that TRAF3IP2-AS1 and/or SRSF10 may represent attractive therapeutic targets in the treatment of IL-17-related autoimmune diseases, such as psoriasis and multiple sclerosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptor Proteins, Signal Transducing / metabolism*
  • Animals
  • Cell Cycle Proteins / genetics
  • Cell Cycle Proteins / metabolism*
  • Encephalomyelitis, Autoimmune, Experimental / metabolism*
  • Gene Knockout Techniques
  • HaCaT Cells
  • HeLa Cells
  • Humans
  • Interferon Regulatory Factor-1 / metabolism*
  • Interleukin-17 / metabolism*
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Mice, Inbred C57BL
  • Psoriasis / metabolism*
  • RNA / genetics
  • RNA / metabolism*
  • RNA, Long Noncoding / genetics
  • RNA, Long Noncoding / metabolism*
  • Repressor Proteins / genetics
  • Repressor Proteins / metabolism*
  • Serine-Arginine Splicing Factors / genetics
  • Serine-Arginine Splicing Factors / metabolism*
  • Signal Transduction / genetics*
  • Transfection

Substances

  • Adaptor Proteins, Signal Transducing
  • Cell Cycle Proteins
  • IL17A protein, human
  • IRF1 protein, human
  • Il17a protein, mouse
  • Interferon Regulatory Factor-1
  • Interleukin-17
  • Irf1 protein, mouse
  • RNA, Long Noncoding
  • Repressor Proteins
  • SRSF10 protein, human
  • SRSF10 protein, mouse
  • TRAF3IP2 protein, human
  • TRAF3IP2-AS1 antisense RNA, human
  • Traf3ip2 protein, mouse
  • Serine-Arginine Splicing Factors
  • RNA