FOXO1是CAR T细胞内内存编程的主调节器
Alexander E Doan1, Katherine P Mueller2,3,4, Andy Y Chen5,6,7
1Center for Cancer Cell Therapy, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA.
转录因子FOXO1促进记忆,并防止化学抗原受体 (CAR) T细胞的衰竭. 过度表达FOXO1增强了CAR T细胞的持久性和抗瘤活性,改善了癌症免疫疗法的结果.
科学领域:
- 免疫学
- 细胞生物学
- 癌症治疗
背景情况:
- 化学抗原受体 (CAR) T 细胞疗法具有前景,但由于T 细胞的持久性较差而受到限制.
- 对于持续的CAR T细胞功能和临床疗效,T细胞记忆程序至关重要.
- 确定调节T细胞记忆和疲劳的因素对于改善CART细胞治疗至关重要.
研究的目的:
- 研究转录因子FOXO1在人类CAR T细胞中调节记忆和疲劳的作用.
- 确定FOXO1操纵是否可以增强CAR T细胞功能,持久性和抗瘤活性.
- 评估FOXO1在CAR T细胞治疗和瘤透淋巴细胞中的临床相关性.
主要方法:
- 在CAR T细胞中药理抑制和基因编辑.
- 在CAR T细胞中过度表达FOXO1.
- 对基因表达,染色体可访问性和T细胞表型的分析.
- 评估CAR T细胞持久性和瘤控制的体内研究.
- 对FOXO1活性与临床结果的相关性分析.
主要成果:
- 抑制FOXO1减少了记忆基因表达,诱导疲劳,并降低了抗瘤活性.
- 过度表达FOXO1促进了T细胞记忆基因表达程序,并增加了染色体的可访问性.
- 在长期刺激下,过度表达FOXO1的CAR T细胞维持了功能,记忆潜力和代谢适应性.
- 在体内,FOXO1过度表达增强了CAR T细胞的持久性和瘤控制.
- 过度表达TCF1并没有产生类似的记忆效益.
- 在接受CAR T细胞或TIL治疗的患者中,FOXO1活性与良好的临床结果相关.
结论:
- FOXO1 是人类CAR T细胞内记忆和疲劳的关键调节剂.
- 过度表达FOXO1增强了CAR T细胞的抗瘤活性,持久性和记忆能力.
- 在癌症免疫治疗中,FOXO1 是优化治疗T细胞状态的有希望的标.
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