阻断HIF-1α/糖解轴通过降低ILC2代谢和功能来抑制过敏呼吸道炎症
Xiaogang Zhang1, Jingping Liu2, Xinyao Li3
1Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences); Department of Immunology, School of Basic Medical Sciences; Department of Clinical Laboratory, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou, China.
缺氧诱导因子-1α (HIF-1α) /糖解途径对于过敏性喘中2组先天性淋巴细胞 (ILC2) 激活至关重要. 针对这一轴可能为喘治疗提供新的免疫治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 代谢途径 代谢途径
背景情况:
- 第二组先天性淋巴细胞 (ILC2s) 在过敏喘的发病过程中起着重要作用.
- 在ILC2-介导的呼吸道炎症中,缺氧诱导因子-1α (HIF-1α) 驱动的糖解的精确调节机制尚未完全理解.
研究的目的:
- 阐明HIF-1α/糖解轴在ILC2-介导的过敏气道炎症中的作用.
- 在喘模型中调查向这种途径的治疗潜力.
主要方法:
- 在小鼠和人类ILC2s中利用糖解和HIF-1α抑制剂,在体外和体内.
- 采用了条件HIF-1α缺乏的小鼠和IL-33/家用灰尘虫刺激模型.
- 进行了转录基因,代谢和染色素免疫沉分析.
主要成果:
- 在IL-33刺激后,在肺部ILC2s中观察到HIF-1α上调和增加的葡萄糖分解.
- 抑制糖解 (2-DG) 或HIF-1α (2-ME) 抑制了ILC2功能和废除了气道炎症.
- 在小鼠中,有条件的HIF-1α缺乏减少了ILC2的反应和呼吸道炎症,导致ILC2s中的糖解受损.
- 在人类喘患者中,受损的HIF-1α/糖解轴激活与减少的ILC2s相关.
结论:
- 在过敏呼吸道炎症中,HIF-1α/糖解轴对ILC2功能至关重要.
- 这一途径代表了喘免疫治疗的有希望的目标.
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