活跃的LXR信号传递,加上较高的线粒体和糖溶性代谢,有助于GM-CSF诱导的训练免疫
Yuanyuan Liu1, Arslan Hamid2, Hannah Hardege1
1Department of Cardiology I - Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, Münster, Germany.
Frontiers in immunology
|January 23, 2026
概括
颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 通过促进细胞代谢和表观遗传变化,诱导训练免疫. 肝脏X受体 (LXRs) 将新陈代谢与这些变化联系起来,为炎症性疾病提供潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢调节 代谢调节 代谢调节
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 涉及宿主防御和炎症性疾病.
- 已知GM-CSF在诱导训练免疫 (TI) 中的作用,但基本机制,特别是代谢和表观遗传重编程,尚不清楚.
研究的目的:
- 系统地调查与GM-CSF诱导的训练免疫相关的代谢和表观遗传重编程.
- 阐明肝X受体 (LXRs) 在这个过程中的特定作用.
主要方法:
- 在人体单细胞的体外分离,细胞因子测定,定量PCR,海马代谢分析,流细胞计,染色体免疫沉 (ChIP).
- 使用枪支脂管学和转录学数据分析来研究GM-CSF诱导的训练免疫力.
主要成果:
- 转基因-CSF增强细胞代谢,包括糖解,线粒体活性,脂肪酸氧化和酸盐代谢,对于建立TI至关重要.
- 脂质组学和转录组学揭示了脂质合成,甘油三储存和乙-CoA通路的增加,导致GM-CSF训练的细胞中素乙化升高.
- 潜在通过PPARγ媒介的LXR信号传递起着关键作用;其抑制减弱了GM-CSF诱导的TI,而激活则通过影响糖分溶解流和基因素乙化来放大了它.
结论:
- 转基因-CSF通过代谢增强和表观遗传修饰诱导训练免疫力,LXRs作为关键环节.
- 升高的代谢活性和活跃的LXR信号传递对于GM-CSF诱导的训练免疫是必不可少的.
- 针对这些代谢和LXR途径可能为GM-CSF驱动的慢性炎症疾病提供新的治疗策略.
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