通过PIM3抑制进行代谢重编程,可以逆转在固体瘤中缺氧诱导的CAR-T细胞功能障碍
Muya Zhou1, Luxia Xu2, Jinhua Hu2
1Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, 1 WenYuan Road, Nanjing, 210023, China. muyazhou@njnu.edu.cn.
Journal of translational medicine
|November 6, 2025
概括
缺氧会损害固体瘤中CAR-T细胞的功能. 抑制PIM3可以逆转这种功能障碍,增强抗瘤活性并改善治疗潜力.
科学领域:
- 免疫治疗是一种免疫疗法.
- 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细胞疗法在血液癌症中有效,但在固体瘤中有限.
- 免疫抑制性瘤微环境 (TME),特别是缺氧,阻碍了CAR-T细胞的疗效.
- 将缺氧与CAR-T细胞功能障碍联系在一起的分子机制尚未完全理解.
研究的目的:
- 为了研究缺氧对CAR-T细胞功能的影响.
- 为了确定低氧诱导的CAR-T细胞功能障碍的分子媒介.
- 评估PIM3抑制作为克服缺氧驱动损伤的策略.
主要方法:
- 在正常和缺氧条件下培养的抗MSLNCAR-T细胞.
- 评估了CAR-T细胞增殖,表型,细胞毒性和新陈代谢.
- 利用RNA测序来识别缺氧诱导的基因表达变化.
- 与抗CD70CAR-T细胞和PIM3抑制的验证结果.
主要成果:
- 缺氧降低了CAR-T细胞的增殖,增加了细胞灭亡和细胞毒性受损.
- 转录和代谢分析显示,葡萄糖分解增加,氧化酸化减少.
- 确定PIM3是低氧诱导的CAR-T细胞功能障碍的关键调解者.
- 抑制PIM3增强了CAR-T细胞记忆表型和抗瘤活性在体外和体内.
结论:
- 在固体瘤中,PIM3是一种新的标,将低氧与CAR-T细胞功能障碍联系起来.
- 抑制PIM3可以逆转低氧诱导的CAR-T细胞功能的损害.
- 向PIM3提供了一种有希望的策略,以增强对缺氧固体瘤的CAR-T细胞疗法.
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