通过胆固醇和皮质醇生物合成,ICOS通过二组先天性淋巴细胞调节IL-10的产生
Yoshihiro Sakano1, Kei Sakano1, Benjamin P Hurrell1
1Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, United States of America.
The Journal of clinical investigation
|July 8, 2025
概括
天生的淋巴细胞 (ILCs) 调节肺炎. 抑制ILC2s中的ICOS可提升IL-10,通过改变类固醇代谢和葡萄糖皮质体受体激活来降低呼吸道过敏反应.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 2组先天性淋巴细胞 (ILC2s) 是对过敏原反应的2型肺炎的关键驱动因素.
- 气道过敏反应 (AHR) 是过敏气道疾病的标志.
研究的目的:
- 研究ILC2s.通过ILC2s.产生IL-10的调节机制.
- 确定ICOS对IL-10产生和AHR的影响.
- 阐明类固醇代谢和葡萄糖皮质体受体 (GR) 信号在ILC2功能中的作用.
主要方法:
- 研究了肺部ILC2s中的ICOS抑制.
- 分析了ILC2类固醇代谢,包括胆固醇和皮质醇生物合成.
- 评估了葡萄糖皮质体受体 (GR) 激活及其下游目标 (MAF,NFIL3).
- 使用的小鼠模型具有体内GR抑制或ILC2特异性的GR缺乏.
- 在人类ILC2s中验证的发现.
主要成果:
- 抑制肺部ILC2s中的ICOS显著增强了IL-10的产生.
- 缺少ICOS会重编程ILC2类固醇代谢,增加胆固醇和皮质醇生物合成,导致GR激活.
- 这种重编程激活MAF和NFIL3,促进IL-10的产生.
- 在体内GR抑制或ILC2特异性的GR缺乏在小鼠模型中加剧了AHR.
- 人类ILC2s与小鼠模型显示一致的结果.
结论:
- 通过控制胆固醇和皮质醇生物合成,ICOS通过控制ILLC2s中的IL-10产生负面调节.
- 这个ICOS-GR-IL-10轴提供了一种影响过敏气道炎症的新机制.
- 针对这种途径可能为AHR提供新的治疗策略.
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