单细胞RNA测序揭示了CCDC86驱动的免疫调节和头支状细胞癌中的抗原呈现细胞动态
Xinchen Sun1, Bingruo Zheng1, Xiaoyu Teng1
1Department of Otolaryngology and Ophthalmology, The First Clinical Medical College Nanjing University of Chinese Medicine, 210023, Nanjing, China.
免疫基因CCDC86调节了头部和部状细胞癌 (HNSCC) 的抗原呈现细胞. 它影响T细胞相互作用,影响瘤微环境中的免疫逃避和激活.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 基因组学就是基因组学.
背景情况:
- 头部和部状细胞癌 (HNSCC) 具有免疫抑制性瘤微环境的特征,这有助于其侵略性和不良预后.
- 免疫相关的基因CCDC86,以其在免疫细胞中的表达而闻名,在HNSCC的背景下以前没有被研究过.
研究的目的:
- 研究CCDC86在HNSCC中的表达模式和免疫功能.
- 分析CCDC86在免疫细胞特异性和HNSCC.内相关的转录程序中的作用.
主要方法:
- 批量和单细胞RNA测序数据 (TCGA和GEO:GSE139324) 的综合分析,以评估CCD86表达和免疫细胞特异性.
- 对高CCDC86和低CCDC86种群进行了差异表达,通路丰富,转录因子调节和细胞间通信分析.
- qPCR验证是在CCDC86淘汰后在FadU细胞中进行的,以确认生物信息学识别的转录变化.
主要成果:
- CCDC86主要表达在瘤透的抗原呈现细胞 (APC) 中,包括巨细胞和树突细胞.
- 高CCDC86的APC显示了增强的SPI1/CEBPA活性,代谢重编程和改变的抗原呈现特征,通过共刺激和检查点通路与T细胞相互作用.
- 高CCDC86的APC与增加的细胞毒性T细胞透,以及T细胞功能障碍有关,这表明它在慢性免疫激活和耐受性中起作用.
结论:
- CCDC86是HNSCC中免疫通信的关键调节者,调节APC-T细胞相互作用并塑造瘤免疫微环境.
- CCDC86将抗原呈现与检查点信号联系起来,有助于免疫逃避,同时保持局部免疫激活.
- CCDC86成为HNSCC的潜在预后生物标志物和免疫治疗点.
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