克隆新抗原引起T细胞免疫反应和对免疫检查点阻塞的敏感性
Nicholas McGranahan1, Andrew J S Furness2, Rachel Rosenthal3
1The Francis Crick Institute, London WC2A 3LY, UK. Centre for Mathematics and Physics in the Life Sciences and Experimental Biology (CoMPLEX), University College London (UCL), London WC1E 6BT, UK. Cancer Research UK Lung Cancer Centre of Excellence, UCL Cancer Institute, London WC1E 6BT, UK.
概括
瘤新抗原异质性会影响免疫反应. 针对克隆新抗原可以提高免疫检查点抑制剂在肺癌和黑色素瘤的疗效.
科学领域:
- 癌症学
- 免疫学
- 遗传学
背景情况:
- 瘤会积累突变,产生影响免疫检查点抑制剂反应的新抗原.
- 内瘤新抗原异质性 (ITH) 在抗瘤免疫中起作用.
研究的目的:
- 研究新抗原ITH对抗瘤免疫力的影响.
- 探索新抗原负担与患者生存之间的关系.
主要方法:
- 综合分析ITH和新抗原负荷.
- 对新抗原反应的CD8透淋巴细胞的鉴定.
- 分析患者对PD-1和CTLA-4阻塞的反应.
主要成果:
- 克隆新抗原负荷与肺腺癌的整体存活率相关.
- 针对克隆新抗原的CD8(+) T细胞表达PD-1,在早期非小细胞肺癌中发现.
- 在晚期NSCLC和黑色素瘤中,具有克隆新抗原的瘤对PD- 1/ CTLA- 4阻断的敏感性增加.
- 化学疗法的亚克隆新抗原与某些患者的反应不佳有关.
结论:
- 新抗原异质性影响免疫监测.
- 针对克隆新抗原显示免疫检查点封锁的治疗潜力.
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