在CAR-T细胞中,CXCR4诱导记忆形成而不是消耗,以实现持久的白血病向向
Ari Itoh-Nakadai1,2, Minggao Liang1,3,4, Michiho Shindo1
1Laboratory for Human Disease Models, RIKEN Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan.
Nature communications
|January 26, 2026
概括
工程化学抗原受体 (CAR) -T细胞表达CXCR4提高了它们在急性髓性白血病 (AML) 中的持久性和抗白血病活性. 这一策略增强了CAR-T细胞的记忆和耐用性,为AML免疫疗法提供了一种有前途的方法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞疗法细胞疗法
背景情况:
- 化学抗原受体 (CAR) -T细胞疗法已经彻底改变了B细胞恶性瘤的治疗方法,但在急性髓性白血病 (AML) 中显示出有限的疗效.
- 治疗AML的成功依赖于产生长寿记忆T细胞和防止T细胞枯竭,这对于持久的反应和避免复发至关重要.
研究的目的:
- 调查化学因受体CXCR4在增强CAR-T细胞记忆和AML中的抗白血病活性中的作用.
- 确定在CAR-T细胞上共同表达CXCR4是否可以提高其在AML模型中的持久性和有效性.
主要方法:
- 对AML患者缓解后带血移植后的T细胞进行分析,以确定富含标记物.
- 工程CAR-T细胞共同表达CXCR4并评估其在患者衍生异种移植模型中的表现.
- 利用单细胞分析和代谢分析来阐明CXCR4影响T细胞功能的机制.
主要成果:
- 缓解期的AML患者的记忆T细胞显示CXCR4表达的丰富.
- 在临床前的AML模型中,被设计为共表达CXCR4的CAR-T细胞显示出增强的持久性和抗白血病活性.
- CXCR4表达促进了与记忆相关的转录程序,减少了T细胞疲劳,并支持CAR-T细胞中的氧化代谢.
结论:
- 协同表达CXCR4增强了CAR-T细胞的记忆和耐用性,这是改善AML免疫治疗结果的可行策略.
- 这些发现表明,向CXCR4可能是提高CAR-T细胞治疗急性髓性白血病和潜在的其他癌症疗法的关键方法.
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