在粘膜皮肤屏障中平衡IL-17介导的保护和IFN-γ驱动的病理
Lucas Dos Santos Dias1, Michail S Lionakis1
1Fungal Pathogenesis Section, Laboratory of Clinical Immunology & Microbiology (LCIM), National Institute of Allergy & Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA.
Trends in immunology
|September 27, 2025
概括
互白素-17 (IL-17) 维持屏障完整性,而过度的干扰素- (IFN-γ) 可能会损害它,导致粘膜皮肤感染. 这表明免疫病理,而不仅仅是免疫缺陷,导致屏障感染.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 皮肤病学 皮肤病学
背景情况:
- 粘膜皮肤表面需要产生IL-17的淋巴细胞来保持屏障的完整性,并防止微生物过度生长.
- 缺少IL-17与增加对细菌和真菌感染的易感性有关.
- 在粘膜部位过度的干扰因子马 (IFN-γ) 活性可以悖论地损害上皮质完整性并促进感染,即使 IL-17 反应正常.
研究的目的:
- 探索IL-17和IFN-γ在维持粘膜皮肤屏障功能的不同作用.
- 研究异常免疫反应导致粘膜皮肤感染的机制.
主要方法:
- 审查关于IL-17和IFN-γ在粘膜皮肤免疫中的现有文献.
- 分析了来自自身免疫性多胞体内膜异位症 - 候群病 - 皮外缩症等疾病的临床数据.
- 综合来自各种细菌,真菌和原生动物感染的证据.
主要成果:
- IL-17对于促进对微生物入侵的屏障抵抗性至关重要.
- 失控的IFN-γ活动会侵蚀上皮质的完整性,增加感染的易感性.
- 有证据表明,IFN-γ驱动的病理有助于粘膜皮肤感染.
结论:
- 提出了一个模型,其中IL-17支持屏障防御,而过度的IFN-γ破坏了它.
- 免疫病理学,以由于免疫反应引起的上皮干扰为特征,是粘膜皮肤感染易感性的重要因素.
- 这挑战了传统的免疫缺陷观点,认为免疫缺陷是障碍感染的唯一原因.
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