德克萨米他抑制了Mycobacterium结核病诱导的糖解,但在人类主要巨细胞中保留了抗菌功能
Lorraine Thong1, Olivia Sandby Thomas1, Oisin Ó Gallchobhair1
1Trinity College Dublin, Trinity Translational Medicine Institute, St James's Hospital, The University of Dublin, Dublin 8, Dublin, Ireland.
Scientific reports
|October 9, 2025
概括
德克萨米他是一种葡萄糖皮质激素 (GC),它重编程人类巨细胞以减少糖解,增强它们控制Mycobacterium tuberculosis (Mtb) 感染的能力. 这种代谢转变有助于在结核病 (TB) 中保护宿主,而不会影响抗菌活性.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢过程中的代谢.
- 传染性疾病 传染性疾病
背景情况:
- 巨细胞对于控制Mycobacterium结核病 (Mtb) 感染至关重要.
- 巨细胞依赖于糖溶性重编程来进行有效的宿主防御.
- 葡萄糖皮质激素 (GC) 在Mtb感染期间对巨细胞代谢的影响尚不清楚.
研究的目的:
- 研究德克萨米他 (GC) 对人类巨细胞代谢和功能反应的影响.
- 了解德克萨米他如何影响巨细胞糖解和Mtb控制.
主要方法:
- 主要的人类呼吸道巨细胞 (AM) 和单细胞衍生巨细胞 (MDM) 用德克萨米他治疗.
- 进行了代谢测试,以评估糖解和氧化代谢.
- 测量了巨对Mtb感染的反应,包括细胞因子分泌和细菌负担.
主要成果:
- 在AM和MDM中,甲显著降低了基底和Mtb诱导的糖解.
- 德克萨米他以细胞特异的方式降低了PFKFB3的表达,并改变了氧化代谢.
- 在MTB感染后,用甲治疗的巨细胞表现出增强的生存率,减少的细菌负担和受损的细胞因子分泌 (IL-1β,TNF,IL-6,IL-8,IL-10).
- 格索姆酸化与德克萨米他介导的抗菌作用有关.
结论:
- 德克萨米他将人类巨细胞重新编程到一个不太具有甘油性代谢状态.
- 这种新陈代谢重编程保留和增强巨细胞限制Mtb生长的能力.
- 这些发现支持GCs在结核病的临床使用,并建议将GC疗法向巨细胞,以改善宿主防御.
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