TRIM59 interacts with ECSIT and negatively regulates NF-κB and IRF-3/7-mediated signal pathways

• Kondo, Takeshi

• Watanabe, Masashi

• Hatakeyama, Shigetsugu

抄録

Innate immune responses are triggered by pathogen-associated molecular patterns (PAMPs) through pattern recognition receptors (PRRs) and then activate intracellular signaling pathways including NF-κB and interferon regulatory factors. Recently, it has been reported that tripartite motif (TRIM) proteins function as crucial regulators via ubiquitin-mediated modifications for these signaling pathways. In this study, we showed that one of the TRIM family ubiquitin ligases, TRIM59, interacts with ECSIT as an adaptor protein required for the TLR-mediated transduction pathway. Luciferase reporter assays using reporter plasmids including NF-κB responsive element, interferon β (IFN-β) promoter and interferon-sensitive response element (ISRE) showed that overexpression of TRIM59 repressed their transcriptional activities, whereas knockdown of TRIM59 enhanced their transcriptional activities. Furthermore, TRIM59 inhibited phosphorylation and dimerization of IRF3 and IRF7, suggesting that TRIM59 negatively regulates upstream kinases for IRFs. These findings indicate that TRIM59 may serve as a multifunctional regulator for innate immune signaling pathways.

収録刊行物

• Biochemical and Biophysical Research Communications

  Biochemical and Biophysical Research Communications 422 (3), 501-507, 2012-06-08

  Elsevier

キーワード

• NF-κB

詳細情報

• CRID: 1050282813988568832
• NII論文ID: 120004448498
• HANDLE: 2115/49795
• ISSN: 0006291X
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles