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.
Copyright © 2021 by The American Association of Immunologists, Inc.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adaptor Proteins, Signal Transducing / metabolism*
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Animals
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Cell Cycle Proteins / genetics
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Cell Cycle Proteins / metabolism*
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Encephalomyelitis, Autoimmune, Experimental / metabolism*
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Gene Knockout Techniques
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HaCaT Cells
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HeLa Cells
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Humans
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Interferon Regulatory Factor-1 / metabolism*
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Interleukin-17 / metabolism*
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Male
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Mice
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Mice, Inbred BALB C
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Mice, Inbred C57BL
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Psoriasis / metabolism*
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RNA / genetics
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RNA / metabolism*
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RNA, Long Noncoding / genetics
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RNA, Long Noncoding / metabolism*
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Repressor Proteins / genetics
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Repressor Proteins / metabolism*
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Serine-Arginine Splicing Factors / genetics
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Serine-Arginine Splicing Factors / metabolism*
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Signal Transduction / genetics*
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Transfection
Substances
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Adaptor Proteins, Signal Transducing
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Cell Cycle Proteins
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IL17A protein, human
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IRF1 protein, human
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Il17a protein, mouse
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Interferon Regulatory Factor-1
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Interleukin-17
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Irf1 protein, mouse
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RNA, Long Noncoding
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Repressor Proteins
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SRSF10 protein, human
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SRSF10 protein, mouse
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TRAF3IP2 protein, human
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TRAF3IP2-AS1 antisense RNA, human
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Traf3ip2 protein, mouse
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Serine-Arginine Splicing Factors
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RNA