铁通过调节ILC2代谢和效应器功能来控制气道过敏反应的发展
Benjamin P Hurrell1, Yoshihiro Sakano1, Stephen Shen1
1Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
Science translational medicine
|May 8, 2024
概括
细胞铁调节2组先天性淋巴细胞 (ILC2s),是过敏性喘的关键驱动因素. 缺铁会损害ILC2的功能,并减少气道的过敏反应,突出显示铁.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 代谢调节 代谢调节 代谢调节
背景情况:
- 2组先天性淋巴细胞 (ILC2s) 对于启动2型肺炎至关重要,特别是对过敏原的反应.
- 喘病原发生涉及复杂的细胞和代谢途径,铁等营养元素发挥着潜在的重要作用.
研究的目的:
- 研究细胞铁在调节ILC2活动中的功能作用及其对过敏性喘的影响.
- 阐明在缺铁条件下ILC2s的代谢重编程及其对免疫反应的影响.
主要方法:
- 在激活过程中对肺ILC2s的转移林受体1 (TfR1) 表达和功能的分析.
- 评估ILC2扩张,激活和代谢概况 (糖解,氧化活性) 在铁操纵 (剥夺,化) 后.
- 在实验性喘模型中评估呼吸道过敏反应,使用铁化或诱导低血.
- 检查人类循环ILC2 TfR1表达和效应器功能与铁的可用性和患者喘状态的关系.
主要成果:
- 转激素受体1 (TfR1) 在激活的肺部ILC2s上升调节;阻断转激素吸收会抑制ILC2的扩张和激活.
- 缺铁会诱导依赖HIF-1α的糖解,并抑制ILC2s中的线粒体氧化活性.
- 在体内铁化或低血改善了实验性过敏喘模型中的呼吸道过敏反应.
- 人类ILC2s在激活时升调TfR1,铁的抑制降低了它们的效应器功能.
- 在喘患者中,循环ILC2 TfR1表达和呼吸道功能之间存在负相关性.
结论:
- 细胞铁是ILC2功能的关键调节者,影响它们的新陈代谢,扩张和效应反应.
- 准铁的可用性是管理ILC2驱动过敏喘的潜在治疗策略.
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