细胞外NCOA4通过激活AGER-NFKB通路来调解败血性死亡
Jiao Liu1, Yichun Wang1,2, Ling Zeng3
1DAMP Laboratory, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China.
Autophagy
|June 25, 2024
概括
感染期间由免疫细胞分泌的细胞外NCOA4通过激活炎症来驱动败血症的严重程度. 准NCOA4或AGER为败血症和相关炎症性疾病提供了潜在的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 病原体感染感染病原体感染
背景情况:
- 败血症是一种危及生命的失调免疫反应对感染.
- 目前的败血症管理面临着重大的临床挑战.
- 自受体在败血症发病过程中的作用在很大程度上是未被探索的.
研究的目的:
- 研究自受体NCOA4在败血症中的新型作用.
- 阐明NCOA4分泌的机制及其在败血症中的作用.
- 评估NCOA4作为毒症的潜在治疗标.
主要方法:
- 研究了从激活的巨细胞和单细胞中分泌的NCOA4.
- 利用内毒性和多微生物性败血症的小鼠模型.
- 使用针对NCOA4和AGER的单克隆中和抗体.
- 在败血症患者中分析了血NCOA4水平.
主要成果:
- 脂聚糖 (LPS) 和细菌感染诱导NCOA4通过自依赖和热的途径分泌.
- 细胞外NCOA4通过NFKBIA的AGER介导降解来激活NF-κB信号传递.
- 在败血症模型中,抗体介导的NCOA4或AGER阻断改善了生存率和减少了器官损伤.
- 败血症患者血NCOA4水平升高与疾病严重程度和炎症标志物相关.
结论:
- 细胞外NCOA4是败血症引起的炎症和死亡的关键媒介.
- NCOA4分泌和信号传递代表了败血症发病的新机制.
- NCOA4和AGER是治疗严重传染病 (如败血症) 的有希望的治疗点.
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