干扰素驱动的CAF重编程增加了结直肠癌中对新辅助放射治疗的免疫反应
Lili Huang1, Weiqing Lu1, Ruiyan Wu1
1Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Shanghai Clinical Research Center for Radiation Oncology, Shanghai 20032, China; Shanghai Key Laboratory of Radiation Oncology, Shanghai 20032, China.
Cell reports. Medicine
|July 29, 2025
概括
经过干扰素许可的癌症相关纤维细胞 (CAFs) 通过招募免疫细胞来增强直肠癌放射治疗反应. 激活CAF中的STING信号增强了抗瘤免疫力,提高了放射治疗的疗效.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- 结直肠癌 (RC) 治疗疗效受到癌症相关纤维细胞 (CAF) 异质性的限制.
- 对新辅助放射治疗 (RT) 反应的CAF影响背后的机制尚不清楚.
研究的目的:
- 研究CAFs在调节直肠癌中RT反应中的作用.
- 确定影响RT敏感性的特定CAF亚群和信号通路.
主要方法:
- 在患者获得的RC样本上进行单细胞RNA测序.
- 在CAF中对干扰素 (IFN) 调节因子1 (IRF1) 表达的分析.
- 研究了IFN- (IFN-γ) 和STING信号通路.
- 评估了STING调制对瘤对RT敏感性的影响.
主要成果:
- 确定了一个新的CAF亚群,IFN授权的CAF (ilCAF),具有高IRF1表达.
- 在瘤中,ilCAFs被丰富,显示出更好的RT反应.
- IFN-γ信号传递促进了ilCAF的两极分化,通过CCL4/CCL5.5增强了T细胞和树突细胞的招募.
- IFN-γ/STING信号激活重新编程瘤层,改善抗瘤免疫力和RT敏感性.
- 在CAF中抑制STING可降低ilCAF的丰富度和RT的敏感性.
- 结合STING激动剂与RT可以实现显著的瘤控制.
结论:
- 获得IFN许可的CAF在增强直肠癌对放射治疗反应方面发挥着至关重要的作用.
- 在CAF中准IFN-γ/STING通路是增强抗瘤免疫力和提高RT疗效的有希望的策略.
- 将STING激动剂与RT结合,为直肠癌治疗提供了一个潜在的治疗方法.
关键词:
这些CAF是CAF.通过IFN/STING通道.刺痛激动剂 刺痛激动剂 刺痛激动剂cDC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC1DC2DC1DC1DC2DC2DC2DC2DC2DC3DC4DC4DC4DC5辐射辐射辐射辐射的辐射更多相关视频
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