在CAR T细胞中,CAR 内在设计预先形成了转录和代谢网络
Didem Agac Cobanoglu1,2, Samantha Franklin3, Yue Hu1,2
1Department of Translational Medical Sciences, School of Medicine, Texas A&M University, Houston, TX 77030, USA.
Metabolites
|January 27, 2026
概括
化学抗原受体 (CAR) T细胞设计和代谢支持影响基线信号. 代谢补充增强了CAR T细胞的炎症和生存计划,而不会过度刺激,提供了一种优化癌症治疗的策略.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞的新陈代谢
背景情况:
- 化学抗原受体 (CAR) T细胞疗法的疗效依赖于信号域和新陈代谢.
- 卡尔-T细胞的行为通常在抗原暴露后进行评估,而忽视了内在的信号传递.
- 由CAR设计和代谢形成的基线转录状态可能预先编程T细胞功能.
研究的目的:
- 研究CAR设计和代谢支持如何影响T细胞的基线转录程序.
- 专注于休息的CAR T细胞中的强力信号传递和NF-κB通路.
- 确定CAR协同刺激领域和代谢加油对内在T细胞编程的影响.
主要方法:
- 改造的CAR-T细胞针对HER2或GPC3与4-1BB或CD28共刺激域.
- 利用涉及ADA1和CD26的代谢补充 (MR) 策略来修改T细胞代谢.
- 在休息的T细胞上进行了大量RNA-seq,并分析了基因表达,丰富和转录因子活性.
主要成果:
- 所有CAR T细胞都显示了基线NF-κB通路激活 (增强信号).
- GPC3 CAR T 细胞的基线激活率高于 HER2 CAR T 细胞.
- 代谢加油扩大了炎症,生存和效应器程序,而不改变方向性,RELA,FOS和STAT被确定为关键调节器.
结论:
- 在休息的CAR-T细胞中,CAR固有的特征,特别是共刺激域,决定了在休息的CAR-T细胞中强化NF-κB的激活.
- 代谢加油增强了基线CAR T细胞状态,而不会导致过度刺激.
- 针对CAR信号和新陈代谢的组合策略可以优化用于癌症治疗的CAR T细胞功能.
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