代谢重编程和失调的IL-17生产会损害CD4 T细胞在败血症后的功能
Patricia A Assis1, Ronald M Allen1, Matthew A Schaller2
1Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA.
iScience
|July 17, 2024
概括
败血症幸存者经历长期免疫功能障碍,CD4 T细胞产生过多的IL-17. 这损害了它们对抗二次感染的能力,并突出了细胞代谢作为治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞的新陈代谢
- 传染性疾病 传染性疾病
背景情况:
- 败血症幸存者面临与感染相关的再住院和死亡风险增加.
- 败血症幸存者的免疫反应受损表明T细胞功能受损.
- CD4 T 细胞对于开发持久的保护性免疫是至关重要的.
研究的目的:
- 为了研究CD4 T细胞的术后功能.
- 确定毒症幸存者的免疫功能障碍背后的机制.
- 探索潜在的治疗点,以减轻败血症幸存者的二次感染.
主要方法:
- 在败血症模型中分析CD4 T细胞功能.
- 测量细胞因子的产生,包括IL-17.
- 评估细胞代谢,包括线粒体功能和糖解.
- 对二次性肺炎的免疫反应的评估挑战.
主要成果:
- 败血症诱导了CD4 T细胞的慢性,增加和非特异性IL-17产生.
- 这种改变的T细胞功能损害了对二次性肺炎的免疫反应.
- 观察到细胞代谢重编程,包括线粒体功能障碍和葡萄糖分解增加.
- 在急性败血症期间启动的代谢变化在解决后长时间持续存在.
结论:
- CD4 T 细胞的慢性IL-17 过度产生有助于败血症幸存者的免疫缺陷.
- 细胞代谢重编程是后败血症免疫功能障碍的一个关键特征.
- 向细胞代谢提供了一个潜在的治疗策略,以改善败血症幸存者的结果.
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