尖端:STING通过TBK1诱导人类巨细胞中的ACLY激活和代谢适应
Maximilian Nickenig1, Matthew S J Mangan1, Hye Eun Lee2
1Institute of Innate Immunity, University Hospital Bonn, University of Bonn, Bonn, Germany.
Journal of immunology (Baltimore, Md. : 1950)
|December 1, 2023
概括
这条cGAS-STING通路感知到DNA和压力. 这项研究揭示了STING信号在巨细胞中激活ACLY,改变细胞代谢以获得强大的DNA感应反应.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
背景情况:
- 该cGAS-STING通路检测细胞质DNA,启动免疫反应.
- STING激活导致转录因子 (IRF3,NF-κB) 诱导和自.
- STING信号对巨细胞代谢的影响仍然未被探索.
研究的目的:
- 调查STING信号是否影响巨细胞代谢.
- 为了确定由STING调节的特定代谢途径.
- 了解代谢重编程在DNA感知反应中的作用.
主要方法:
- 利用了人类的巨细胞.
- 雇佣了遗传和药理学的干扰.
- 研究了STING信号传递,TANK结合激酶1 (TBK1) 和ATP-酸酶 (ACLY) 的激活.
- 在cGAMP刺激后分析了细胞代谢变化.
主要成果:
- 发现STING信号通过人类巨细胞的酸化来激活ATP-酸酶 (ACLY).
- 已经证明,STING通过其下游效应器TBK1.1来准ACLY.
- 确定TBK1是cGAMP诱导的代谢变化的关键调解者.
- 通过STING介导的代谢重编程被证明可以补充转录和自反应.
结论:
- 刺激信号积极重编程巨细胞的新陈代谢.
- 通过STING激活ACLY是这种代谢转变的关键组成部分.
- 代谢重编程增强了细胞对细胞核DNA传感的细胞反应.
- 这项研究扩展了STING通路的已知功能,超出了免疫基因诱导和自的范围.
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