使用AND门适配器RevCAR T细胞向结肠直肠癌细胞
Karla E G Soto1, Liliana R Loureiro1, Tabea Bartsch1
1Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
Frontiers in immunology
|January 3, 2024
概括
新的适应性CAR T细胞系统提高了癌症治疗的安全性. 研究人员为双RevCAR T细胞开发了新的向模块,提高了特异性,减少了结直肠癌治疗中的副作用.
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:
- 化学抗原受体 (CAR) T细胞疗法对血液性恶性瘤有前途,但面临着"在点上,瘤外"毒性的挑战,特别是当向存在于健康组织上的瘤相关抗原 (TAA) 时.
- 提高CAR T细胞的安全性对于其临床转化至关重要,尤其是在TAA经常表现出更广泛表达模式的固体瘤中.
研究的目的:
- 开发新的可切换适配器CAR系统,特别是RevCAR和双RevCAR平台,以增强瘤特异性和减少瘤以外的毒性.
- 设计和验证针对结直肠癌 (CRC) 相关抗原,癌胚抗原 (CEA) 和上皮细胞粘附分子 (EpCAM) 的新目标模块 (RevTM).
主要方法:
- 开发针对CEA和EpCAM的四个新的,结构上不同的RevTM.
- 使用RevCAR和双RevCAR平台对单特异性和AND门准的反CEA和反EpCAMRevTM进行验证.
- 通过在体外和体内杀死CEA+和EpCAM+癌细胞的试验来评估双RevCART细胞疗效.
主要成果:
- 成功验证了新的抗CEA和抗EpCAM RevTMs.
- 证明使用这些RevTM的双RevCART细胞可以同时向CEA+和EpCAM+癌细胞.
- 双RevCAR T细胞在体外和体内实现了对结直肠癌细胞的特定杀死,这表明瘤向和特异性得到了增强.
结论:
- CEA和EpCAM特定适配器RevTMs的开发为单特异性和AND门向结直肠癌细胞提供了一种多功能工具.
- 通过这些新型RevTM增强的RevCAR平台,代表了提高CAR T细胞疗法的瘤特异性和安全性的改进方法.
- 这一策略有可能在固体瘤治疗中得到更广泛的应用,减轻与健康组织表达的TAA相关的风险.
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