γδ T 细胞介导的瘤免疫力受到STING和TGF-β信号通路的严格调节
Jing Luo1,2,3,4, Shengli Wang1,2,3, Quanli Yang1,2,3
1Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital Affiliated with Jinan University, Jinan University, Zhuhai, 519000, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 22, 2024
概括
在玛三角T细胞中激活STING通路促进了早期瘤监测. 然而,TGF-β在晚期瘤中抑制了STING,因此需要结合TGF-β抑制和STING激动剂来进行有效的癌症免疫疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- 干扰素基因刺激 (STING) 途径对于抗瘤免疫非常重要.
- 在癌症进展过程中,STING在调节马三角 (γδ) T 细胞功能的特定作用尚未完全理解.
研究的目的:
- 阐明STING在瘤发育的背景下影响γδT细胞活动的机制.
- 调查向STING通路及其调节器在癌症免疫治疗中的潜力.
主要方法:
- 在早期和晚期瘤阶段对 γδ T 细胞中 STING 通路激活的分析.
- 研究周期性GMP-AMP (cGAMP),TBK1,Eomes,干扰素- (IFN-γ) 和转化生长因子-β (TGF-β) 在这个过程中的作用.
- 评估涉及TGF-β抑制和STING激动剂的组合疗法.
主要成果:
- 瘤衍生的cGAMP在瘤发育早期的γδT细胞中激活STING,通过TBK1-介导的Eomes酸化导致IFN-γ的产生和瘤监测.
- 在晚期瘤中,累积的TGF-β降低了STING的调节,损害了γδ T细胞的功能.
- 结合TGF-β抑制和STING激动剂可以克服瘤诱导的免疫抑制并增强抗瘤作用.
结论:
- 在瘤免疫监测期间,确定了一种新的以STING为媒介的IFN-γ在γδT细胞中的产生机制.
- 这些发现突出了瘤微环境对STING的动态调节,并建议将STING激动剂与TGF-β抑制结合在一起的治疗策略用于癌症治疗.
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