双重准的乒乓球CAR T细胞:利用外围扩张来改善固体瘤免疫疗法
Amanda V Finck1,2, Ziming Wang1,2, Donna Gonzales1,2
1Department of Pathology and Laboratory Medicine, Center for Cellular Immunotherapies, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104.
概括
通过识别CD19+ B细胞,工程双向CAR T细胞通过识别CD19+ B细胞,在固体瘤中增强了外周扩张和抗瘤活性. 这一策略改善了CAR T细胞治疗对没有淋巴细胞减少的固体瘤的治疗结果.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- 针对CD19导向的CAR T细胞治疗的临床反应与周围血液中的CAR T细胞扩张相关.
- 针对固体瘤的CAR T细胞由于缺乏外周抗原识别,表现出有限的外周扩张.
研究的目的:
- 设计双向和双刺激的CAR T细胞 (CD19/28ζ-M5BBζ),以克服固体瘤CAR T细胞治疗的局限性.
- 为了增强CAR T细胞对固体瘤的外周扩张和抗瘤疗效.
主要方法:
- 工程双向CAR T细胞识别CD19+B细胞和固体瘤抗原.
- 在胰腺管道腺癌和黑色素瘤的免疫能力较强的小鼠模型中测试了双重向的CAR T细胞.
- 人类CAR T细胞胰腺/异种移植模型中的验证结果与外围CD19+B细胞.
主要成果:
- 双重向的CAR-T细胞在小鼠模型中表现出增强的外周扩张.
- 与单个向的CAR T细胞相比,与双重向的CAR T细胞相比,观察到更好的抗瘤疗效和更高的存活率.
- 在人性化的异种移植模型中,双 CAR T 细胞显著提高了瘤清除和存活率.
结论:
- 双重向的CAR T细胞促进了外围扩张和抗瘤功效.
- 这一策略增强了CAR T细胞池,可以在没有淋巴缺血的情况下瘤透.
- 提供了一种新的方法来改善接受CAR T细胞治疗固体瘤的患者的治疗结果.
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