The transmembrane endoplasmic reticulum-associated E3 ubiquitin ligase TRIM13 restrains the pathogenic-DNA-triggered inflammatory response.

The transmembrane endoplasmic reticulum-associated E3 ubiquitin ligase TRIM13 restrains the pathogenic-DNA-triggered inflammatory response.
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跨膜内质网相关的E3泛素连接酶TRIM13抑制病原性DNA触发的炎症反应。

DOI:
10.1126/sciadv.abh0496
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发表时间:
2022-01-28
期刊:
影响因子:
13.6
通讯作者:
Chen T
Chen T
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Li X;Yu Z;Fang Q;Yang M;Huang J;Li Z;Wang J;Chen T

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内质网 (ER) 干扰素基因局部刺激物 (STING) 是致病性 DNA 触发的先天反应的核心适配器。 STING 的异常激活会导致自身炎症和自身免疫性疾病,这引起了人们对 STING 在对致病性 DNA 的先天反应过程中如何进行微调的担忧。在这里,我们报道了含有跨膜结构域(TM)的内质网定位E3泛素连接酶TRIM13(含有13的三联基序)是抑制对致病性DNA的炎症反应所必需的。 TRIM13 缺陷会增强致病性 DNA 触发的炎症细胞因子的产生,抑制 DNA 病毒复制,并导致与年龄相关的自身炎症。从机制上讲,TRIM13 通过 TM 与 STING 相互作用,并催化 STING 的 Lys6 连接的多泛素化,导致 ER 退出减慢并加速 ER 引发的 STING 降解。 STING 缺陷逆转了 TRIM13 敲除小鼠增强的先天抗 DNA 病毒反应。我们的研究描绘了在致病性 DNA 触发的炎症反应期间通过跨膜 ER 相关 TRIM13 控制 STING 稳态的潜在策略。 E3 连接酶 TRIM13 调节 STING 泛素化并抑制对致病性 DNA 的炎症反应。
The endoplasmic reticulum (ER)–localized stimulator of interferon genes (STING) is the core adaptor for the pathogenic-DNA–triggered innate response. Aberrant activation of STING causes autoinflammatory and autoimmune diseases, raising the concern about how STING is finely tuned during innate response to pathogenic DNAs. Here, we report that the transmembrane domain (TM)–containing ER-localized E3 ubiquitin ligase TRIM13 (tripartite motif containing 13) is required for restraining inflammatory response to pathogenic DNAs. TRIM13 deficiency enhances pathogenic-DNA–triggered inflammatory cytokine production, inhibits DNA virus replication, and causes age-related autoinflammation. Mechanistically, TRIM13 interacts with STING via the TM and catalyzes Lys6-linked polyubiquitination of STING, leading to decelerated ER exit and accelerated ER-initiated degradation of STING. STING deficiency reverses the enhanced innate anti-DNA virus response in TRIM13 knockout mice. Our study delineates a potential strategy for controlling the homeostasis of STING by transmembrane ER-associated TRIM13 during the pathogenic-DNA–triggered inflammatory response. The E3 ligase TRIM13 modulates STING ubiquitylation and restrains inflammatory responses to pathogenic DNAs.
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