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Updated: Jan 21, 2026
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A Spheroid Killing Assay by CAR T Cells
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使用纵向阻抗基于瘤细胞活力测量的连续杀伤试验 - 评估T细胞性能的一种有用方法
Tengis Tschaidse1, Marcel P Trefny2, Emanuele Carlini2
1Division of Clinical Pharmacology, LMU University Hospital; Department of General, Visceral and Transplantation Surgery, LMU University Hospital.
Journal of visualized experiments : JoVE
|January 19, 2026
概括
一种新的分析量化了仿真抗原受体 (CAR) T 细胞的连续杀伤能力,揭示了T 细胞耗尽标记. 这种方法提供了一种具有成本效益的方法来评估CAR T细胞功能,以改进细胞治疗设计.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 化学抗原受体 (CAR) T细胞疗法对血液性恶性瘤有希望,但面临诸如因抗原损失或T细胞枯竭而复发等挑战.
- 现有的功能测定可能无法完全捕捉慢性抗原刺激下CAR T细胞的连续杀伤能力和耐久性.
研究的目的:
- 开发和验证一种基于阻抗的测定方法,用于量化在体外中通过CAR T细胞介导的连续杀戮.
- 评估CAR T细胞功能,识别疲劳标记,并使成本有效的临床前评估.
主要方法:
- 使用实时细胞分析 (RTCA) 系统与E板进行无标签,持续监测瘤细胞活力.
- 通过重复播种瘤细胞和在定义的效应因子与点 (E:T) 比率上添加CAR T细胞,实施了一种连续杀死试验.
- 开发了一种洗盘的程序,使E盘能够重复使用,提高了成本效益.
主要成果:
- 该试验准确量化了CAR T细胞杀死率,目标清除时间和细胞指数 (CI) 动力学.
- 证明,在瘤重复接触时,杀死能力的逐渐下降作为获得的CAR T细胞功能障碍 (疲劳) 的标记.
- 用可重复使用的E板验证了测试的成本效益和分析稳定性.
结论:
- 开发的基于阻抗的连续杀死试验提供了一个精确,可扩展和负担得起的方法,用于临床前评估CAR T细胞功能.
- 这种测定有助于评估CAR T细胞的耐用性,功效以及识别耗尽标记,有助于优化细胞治疗设计.
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