TBK1通过介导IRF5/IRF4轴参与M-CSF诱导的巨细胞极化
Yuanyuan Li1,2,3, Le Ji4, Chang Liu1,2,3
1Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
The FEBS journal
|October 22, 2024
概括
坦克结合激酶1 (TBK1) 调节了巨细胞的两极分化. 抑制TBK1促进M1类的前炎性巨细胞,影响先天免疫和瘤发育.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 坦克结合激酶1 (TBK1) 在先天免疫和瘤发育中至关重要.
- 巨细胞殖民地刺激因子 (M-CSF) 在质母细胞瘤中驱动免疫抑制的M2巨细胞.
- TBK1在M-CSF诱导的巨细胞极化中的特定作用尚不清楚.
研究的目的:
- 研究TBK1在调节巨细胞极化中的作用.
- 确定TBK1如何影响M-CSF刺激的巨细胞在质母细胞瘤的背景下.
主要方法:
- 对人类质瘤透性髓状细胞中的TBK1表达的分析.
- 在骨髓细胞和M-CSF刺激的骨髓衍生的巨细胞中条件删除TBK1.
- 对巨细胞极化标记物的评估 (CD86,IL-1β,TNF-α,阿基因酶1).
- 对转录因子干扰素调节因子4 (IRF4) 和IRF5.5的研究.
主要成果:
- 在质瘤透髓状细胞中观察到高的TBK1表达.
- 酸化的TBK1在M-CSF刺激的巨细胞中升高.
- 骨髓细胞中的TBK1缺失诱导了M-CSF刺激的巨细胞中的M1类的炎症前驱表型.
- 抑制TBK1降低了IRF4,并增加了IRF5激活,促进了M1极化.
- 删除IRF5可以抵消TBK1抑制对巨细胞两极分化的影响.
结论:
- TBK1在调节M-CSF介导的巨细胞极化方面发挥着重要作用.
- TBK1-IRF5/IRF4轴是控制巨细胞表型的关键机制.
- 向TBK1可能为调节瘤微环境提供治疗策略.
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