通过UBE2O介导的单双化许可证NLRP6在肠道中的炎症酶激活
Decai Wang1, Xuequn Chen1, Kaiwen Sui1
1State Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China.
Cell host & microbe
|January 7, 2026
概括
通过UBE2O进行单双化可以控制肠道细胞中的NLRP6炎症酶激活. 这一发现揭示了调节对肠道病原体免疫力的新目标.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 在肠上皮细胞 (IEC) 中的NLRP6炎症酶作为对肠道病原体的关键防御作用.
- 控制NLRP6炎症酶激活的精确机制在很大程度上是未知的.
研究的目的:
- 阐明调节NLRP6炎症酶激活的翻译后修改.
- 为了确定参与NLRP6炎症酶激活的特定E3结合酶.
主要方法:
- 研究了单双化在NLRP6炎症酶激活中的作用.
- 在小鼠模型中利用了UBE2O缺陷和对单基抗性NLRP6突变.
- 对罗塔病毒和Citrobacter rodentium感染的评估敏感性.
- 研究了UBE2O抑制剂三氧化对APL患者IL-18分泌的作用.
主要成果:
- 确定了单双化作为NLRP6炎症酶激活的关键开关.
- 证明了E3结合酶UBE2O催化了NLRP6.6的双位元单双化.
- 在K680-687中以UBE2O为媒介的单双化促进了寡合化,而在K115/130的修饰则强制执行了细胞质局部化.
- 缺乏UBE2O或NLRP6突变会损害炎症酶激活,增加对肠道感染的易感性.
- 三氧化物抑制UBE2O,抑制NLRP6依赖的IL-18分泌在APL患者.
结论:
- 通过UBE2O介导的双位元单双化是许可NLRP6炎症酶激活的中心机制.
- 这一发现揭示了调节肠道免疫力和治疗感染的新型治疗标.
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