参与TCR的支架可以选择性地扩展抗原特异性T细胞,这些T细胞具有适合采用细胞疗法的表型
Siri Amanda Tvingsholm1, Marcus Svensson Frej2, Vibeke Mindahl Rafa1
1Department of Health Technology, Technical University of Denmark, Lyngby, Denmark.
Journal for immunotherapy of cancer
|August 16, 2023
概括
这项研究引入了用于扩大抗原特异性T细胞的人工抗原呈现性支架 (Ag支架). 这些支架有效地产生强大的T细胞用于采用细胞疗法 (ACT),克服了癌症治疗的关键挑战.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 在瘤学瘤学.
背景情况:
- 采用细胞疗法 (ACT) 对癌症和病毒感染有希望,但在T细胞扩张和持久性方面面临挑战.
- 目前的ACT策略与具有强大的细胞毒性能力的足够T细胞的体外扩张作斗争.
研究的目的:
- 开发一种新技术,用于使用人工抗原呈现支架 (Ag支架) 进行抗原特异性T细胞的ex vivo扩张.
- 优化Ag支架以产生具有ACT增强特征的T细胞.
主要方法:
- 在德克斯骨架上开发了Ag支架,具有质主要基因相容性复合体 (pMHC),细胞因子和协同刺激分子.
- 从健康捐赠者和黑色素瘤患者的外周血液单核细胞中扩展的抗原特异性T细胞.
- 评估T细胞产品的表型和功能特征,包括细胞毒性和自我更新能力.
主要成果:
- 一个最佳的Ag支架 (pMHC,IL-2,IL-21) 有效地扩展了病毒和瘤特异性的CD8+T细胞.
- 扩张的T细胞表现出高抗原特异性,自我更新,低疲劳,以及优越的瘤杀伤能力.
- 一个多目标的Ag支架扩大了T细胞从60-70%的黑色素瘤患者中,产生了表型和功能性改善的T细胞.
结论:
- 抗原特异性CD8+T细胞的选择性ex vivo扩张的Ag支架是一个有前途的技术.
- 这种方法为ACT产生了高度特异和功能增强的T细胞产品.
- 优化的Ag架克服了当前ACT策略中的关键局限性.
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