在B-ALL患者中,CAR-T细胞的功能多样化和动态
Zongcheng Li1, Lei Zhao2, Yuanyuan Zhang2
1State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Senior Department of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, China.
Cell reports
|October 18, 2023
概括
这项研究绘制了白血病患者输液后的仿制抗原受体 (CAR) -T细胞进化图. 细胞毒性CAR-T细胞占主导地位与缓解相关,而与B细胞相似的CAR-T细胞可以预测复发.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 了解输液后的化学抗原受体 (CAR) -T细胞行为对于改善癌症疗法至关重要.
- 细胞进化和CAR-T细胞的分子程序影响B细胞急性淋巴细胞白血病 (B-ALL) 的治疗疗效.
研究的目的:
- 在B-ALL患者的输液后构建CAR-T细胞的详细转录基因格局.
- 识别不同的CAR-T细胞亚型及其与治疗结果的关联.
- 阐明驱动CAR-T细胞功能多样化和进化中的分子机制.
主要方法:
- 从26名B-ALL患者的7,578个CAR-T细胞的纵向单细胞RNA测序.
- 生物信息分析以确定CAR-T细胞亚型并推断细胞进化.
- 在体外验证CAR-T细胞分化的途径.
主要成果:
- 确定了8种CAR-T细胞亚型,包括细胞毒性和双重身份 (非T细胞) 亚型.
- 长期缓解与主要的细胞毒性CAR-T细胞亚型相关.
- 观察到与白血病进展和复发预测相关的类似B细胞的CAR-T细胞的出现.
- 实验室研究表明,B特征的CAR-T细胞生成受抗原刺激和TCR信号的影响,可以通过IL-12调节.
结论:
- 输液后,CAR-T细胞种群多样化,与临床结果相关的不同亚型.
- 类似于B细胞的CAR-T细胞代表了功能障碍的状态,这可能预测B-ALL的复发.
- 这些发现为CAR-T细胞动态提供了洞察力,并为优化免疫治疗提供了潜在的目标.
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