瘤部位导向的A1R表达增强了CAR T细胞的功能,并提高了对固体瘤的疗效
Kevin Sek1,2, Amanda X Y Chen3,4, Thomas Cole3,4
1Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia. kevin.sek@petermac.org.
Nature communications
|July 3, 2025
概括
在固体瘤中,表达A1受体的工程化化学抗原受体T细胞显示出增强的抗瘤活性. 瘤局部表达改善了疗效和持续性,提供了一种新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 固体瘤微环境中含有像腺素这样的免疫抑制因素.
- 腺素通过A2A受体激活抑制化学抗原受体T细胞.
- 目前的化学抗原受体T细胞疗法在固体瘤治疗方面面临挑战.
研究的目的:
- 为了设计化学抗原受体T细胞来克服腺介导的抑制.
- 研究A1受体信号传递在增强T细胞功能中的作用.
- 开发一种用于改善固体瘤中化学抗原受体T细胞疗效的新策略.
主要方法:
- 工程化学抗原受体T细胞过度表达A1受体.
- 使用CRISPR/Cas9同质性针对瘤局部A1受体表达的定向修复.
- 在小鼠和人类模型中评估抗瘤功效和T细胞功能.
主要成果:
- 构成性A1受体过度表达增强了化学抗原受体T细胞效应器功能,但降低了持久性.
- 瘤局部A1受体表达通过敲入方法改善了抗瘤疗效.
- A1受体表达取决于转录因子IRF8,并显示出独特的转录特征.
结论:
- 瘤局部化的A1受体表达是一种可行的策略,用于增强化学抗原受体T细胞治疗固体瘤.
- 这种方法提供了一种新的方法,用于促进特效T细胞分化因子的定位表达.
- 这些发现为克服瘤微环境中的免疫抑制提供了原则证明.
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