cGAS-STING通路重编程巨细胞两极分化,并在头癌中接受新辅助免疫疗法后的响应瘤中高度表达
Zhaohong An1, Xiwei Zhang1, Lin Li2
1Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
Acta biochimica et biophysica Sinica
|December 18, 2025
概括
这项研究表明,STING激动剂可以在头部和部状细胞癌 (HNSCC) 中增强抗瘤免疫力. 刺激激活促进M1巨细胞的两极分化,增强对瘤的免疫反应,特别是免疫疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 循环GMP-AMP合成酶 (cGAS) 刺激干扰素基因 (STING) 途径对于启动对瘤的先天免疫反应至关重要.
- 头部和部状细胞癌 (HNSCC) 是一个重要的健康问题,了解其免疫微环境是开发有效疗法的关键.
研究的目的:
- 调查STING在HNSCC中的作用,并评估STING激动剂的治疗潜力.
- 探索STING对巨细胞极化的影响及其与HNSCC患者临床结果的相关性.
主要方法:
- 对STING (TMEM173) 表达和巨细胞透的TCGA-HNSC数据集的分析.
- 在体外研究中,使用RAW 264.7细胞治疗了STING激动剂MSA-2和抑制剂H-151.
- 临床HNSCC样本上的流细胞计和免疫组织化学.
- 来自新辅助免疫疗法试验的患者数据的单细胞RNA-seq分析.
主要成果:
- 提升的TMEM173表达与增加的M1巨细胞透和HNSCC中的特定信号通路相关.
- MSA-2治疗将M2巨细胞重新编程为M1表型,增加促炎细胞因子并增强MHC II表达.
- 患者的高STING表达与M1-样巨细胞的增加以及对免疫治疗的更好的反应有关.
结论:
- 像MSA-2这样的刺痛激动剂通过调节巨细胞极化来增强HNSCC中的抗瘤免疫力.
- cGAS-STING通路是HNSCC的潜在治疗点,特别是在与免疫疗法结合使用时.
相关概念视频
01:27Tumor Immunotherapy
1.7K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
1.7K
01:19Interactions Between Signaling Pathways
7.1K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.1K