产生IL17的 γδ T 细胞通过免疫抑制促进辐射抵抗
Lorenzo Galluzzi1, Toni Celià-Terrassa2
1Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
Trends in cancer
|November 13, 2025
概括
被辐射的肺癌细胞释放出DNA细胞外囊泡,通过巨细胞中的STING信号,通过招募IL17分泌的γδT细胞来促进辐射抵抗.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 干白素-17 (IL17) 分泌的 γδ T 细胞与癌症进展有关,有助于免疫抑制,转移和治疗耐药性.
- 瘤细胞,特别是肺癌,可以对辐射等疗法产生抵抗力.
研究的目的:
- 研究被辐射的肺癌细胞促进放射电阻的机制.
- 阐明细胞外囊泡和免疫细胞招募在这个过程中的作用.
主要方法:
- 从被辐射的肺癌细胞中释放出的含有DNA的细胞外囊泡的分析.
- 研究IL17分泌的γδ T细胞的招募.
- 检查CCL20和STING信号在与瘤相关的巨细胞中的参与.
主要成果:
- 研究人员发现,来自被辐射的肺癌细胞的含有DNA的细胞外囊泡可以增强放射电阻.
- 这些囊泡协调IL17分泌的γδT细胞的招募.
- 招募机制涉及瘤相关巨细胞内的CCL20和STING信号传递.
结论:
- 被辐射的肺癌细胞利用含有DNA的细胞外囊泡来培养一种免疫抑制的微环境.
- 这一过程通过通过涉及巨细胞STING信号的CCL20依赖途径招募IL17分泌的γδT细胞来促进放射电阻.
- 准这种途径可能为克服肺癌治疗耐药性的新策略提供帮助.
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