UniCAR T细胞功率 - 适应器分子和适应器CAR T细胞之间的亲和关系问题?
Hugo Boutier1, Liliana R Loureiro1, Lydia Hoffmann1
1Department of Radioimmunology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328 Dresden, Germany.
International journal of molecular sciences
|July 13, 2024
概括
这项研究调查了适应器CAR系统,发现改变UniCAR表位亲和力不会显著影响T细胞对抗癌症点的功效. 这表明更高的亲和力对适配器CAR疗效并不至关重要.
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细胞疗法在血液性恶性瘤中表现有前途,但存在严重副作用的风险.
- 适配器CAR平台,如UniCAR系统,正在开发,以提高CART细胞的安全性和有效性.
- UniCAR T 细胞激活需要一个目标模块 (TM) 来连接T 细胞和瘤细胞.
研究的目的:
- 研究在目标模块 (TM) 中改变E5B9表位素对与UniCAR T细胞相互作用的影响.
- 评估UniCAR表皮层亲和度的变化是否会影响针对纤维细胞激活蛋白 (FAP) 表达标的UniCAR T细胞的强度.
主要方法:
- 确定了一种新的表位,E5B9L,对单克隆抗体5B9.9具有很高的亲和力.
- 将E5B9L合到针对FAP的TM中 (反FAP-E5B9LTM).
- 对抗FAP-E5B9LTMs与现有的抗FAP-E5B9TMs的结合特性和T细胞重定向能力进行了比较.
主要成果:
- 产生了抗FAP-E5B9LTMs,与UniCAR有不同的亲和力.
- 通过TMs重定向的UniCAR T细胞在细胞毒性活性或细胞因子释放概况上没有观察到显著的差异,具有不同的E5B9表位亲缘关系.
- 尽管TM-UniCAR结合亲和力有所变化,但T细胞功效保持一致.
结论:
- 增加UniCAR T细胞和目标模块之间的亲和力并不会极大地提高这种适配器CAR系统的功效.
- 这些发现表明,其他因素可能对优化UniCAR T细胞功能比简单地最大化TM-UniCAR结合亲和力更重要.
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