在癌症免疫治疗中修复DNA不匹配
1Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, China.
NAR cancer
|June 16, 2023
概括
具有缺陷DNA不匹配修复 (dMMR) 的瘤对免疫检查点抑制剂 (ICI) 反应良好. 本综述探讨了dMMR免疫疗法机制,耐药性问题以及改善MSI瘤治疗有效性的策略.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 在DNA不匹配修复 (dMMR) 中的缺陷导致瘤中的微卫星不稳定性 (MSI).
- 患有dMMR/MSI瘤的患者可以从免疫检查点抑制剂 (ICI) 治疗中获益,特别是针对PD-1/PDL1通路.
研究的目的:
- 审查dMMR介导免疫治疗的发现,发展和分子基础.
- 讨论dMMR瘤中ICI反应的机制,并解决治疗耐药性的挑战.
主要方法:
- 对dMMR,MSI和ICI治疗研究的文献综述.
- 对驱动dMMR瘤ICI反应和耐药性的分子机制的分析.
主要成果:
- dMMR瘤产生新抗原,激活cGAS-STING通路,表现出I型干扰素信号,并招募瘤透的淋巴细胞,有助于ICI敏感性.
- 大约50%的dMMR瘤对当前的ICI治疗没有反应,表明显著的耐药性.
结论:
- 了解dMMR介导免疫疗法对于优化癌症治疗至关重要.
- 进一步研究克服抗药性机制对于改善接受ICI治疗的dMMR瘤患者的临床结果至关重要.
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