CREM是NK细胞中CAR和IL-15信号的监管检查点
Hind Rafei1,2, Rafet Basar1,2, Sunil Acharya1,2
1Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Nature
|June 4, 2025
概括
循环AMP反应元调节器 (CREM) 调节化学抗原受体 (CAR) 自然杀手 (NK) 细胞的功能. 向CREM增强了CAR-NK细胞对瘤的疗效.
科学领域:
- 免疫学
- 细胞生物学
- 癌症研究
背景情况:
- 化学抗原受体 (CAR) 自然杀手 (NK) 细胞免疫疗法对癌症治疗具有前景.
- 控制CAR-NK细胞活动和潜在功能障碍的分子机制尚未完全理解.
研究的目的:
- 确定CAR-NK细胞功能的关键调节剂.
- 阐明转录因子循环AMP反应元模块 (CREM) 在CAR-NK细胞活性中的作用.
- 探索CREM作为增强抗癌免疫力的潜在治疗点.
主要方法:
- 在瘤小鼠模型中对CAR-NK细胞进行转录组分析.
- 通过CAR激活和互白素-15信号传递来研究CREM诱导.
- 在体外和体内评估CREM删除对CAR-NK细胞功能的影响.
- 通过PKA-CREB信号通路调解CREM诱导.
- 分析CREM对CAR-NK细胞的表观遗传重编效应.
主要成果:
- 在高峰效应器功能期间,CAR-NK细胞显著上调CREM,这与激活和功能障碍的特征相吻合.
- 无论是CAR激活还是IL-15信号都会迅速诱导CREM.
- 删除CREM增强了CAR-NK细胞效应器功能和抵抗瘤诱导的免疫抑制.
- 通过PKA-CREB途径进行CREM诱导.
- 通过表观遗传重编程来调节CAR-NK细胞功能.
结论:
- 它是CAR-NK细胞功能的关键调节剂,影响激活和功能障碍.
- 向CREM是一种可行的策略,可以提高CAR- NK细胞免疫疗法的抗瘤疗效.
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