在临床前模型中,CDK12/13无活化触发了STING介导的抗瘤免疫
Yi Bao1,2, Yu Chang1,2, Jean Ching-Yi Tien1,2
1Michigan Center for Translational Pathology.
The Journal of clinical investigation
|September 16, 2025
概括
通过激活STING信号传递,使循环素依赖性激酶12 (CDK12) 和CDK13无活化可以增强抗瘤免疫力. 这增强了T细胞的反应,并改善了抗PD-1等癌症免疫疗法的结果.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 循环素依赖性激酶12 (CDK12) 失活与具有基因组不稳定的免疫性前列腺癌亚型有关.
- 这种亚型表现出瘤内T细胞透率增加.
研究的目的:
- 研究CDK12及其对应物CDK13在癌症免疫中的作用.
- 探索针对癌症治疗的CDK12/13的治疗潜力.
主要方法:
- 在各种癌症模型中,CDK12和CDK13的遗传和药理失活.
- 对临床队列的分析,将CDK12/13表达与患者的存活率和免疫检查点阻塞 (ICB) 的反应相关联.
- 研究在CDK12/13耗尽时STING通路激活的机制,包括细胞核酸释放.
主要成果:
- CDK12/13的非激活强烈地激活干扰素基因刺激器 (STING) 在多种癌症类型中发出信号.
- 减少CDK12/13表达与改善的生存率和对ICB的更好的反应相关.
- CDK12/13的耗尽或降解触发了STING激活,延迟了瘤的生长,并与抗PD-1疗法产生协同作用.
- 组合疗法增强了STING活性,CD8+ T细胞透和激活瘤中的激活,依赖于STING和CD8+ T细胞.
结论:
- 在CDK12突变癌症中,STING激活是驱动T细胞透和免疫热微环境的关键机制.
- 双重CDK12/13抑制剂和降解剂可以激活抗瘤免疫力.
- 向CDK12/13有望增强对癌症免疫疗法的反应.
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