激活先天性免疫反应会使hPSC衍生的CAR巨细胞再极化,以改善抗瘤活性
Jun Shen1, Shuzhen Lyu1, Yingxi Xu1
1State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin 300020, China.
Cell stem cell
|May 9, 2024
概括
我们开发了一种高效的方法,可以从干细胞中产生化学抗原受体巨细胞 (CAR-Ms),用于癌症免疫治疗. 这些CAR-Ms通过免疫系统激活,在体外和体内显示出增强的瘤杀伤能力.
科学领域:
- 免疫学 免疫学 免疫学
- 干细胞生物学 干细胞生物学
- 癌症研究 癌症研究
背景情况:
- 来自人类多能干细胞 (hPSCs) 的化学抗原受体巨细胞 (CAR-Ms) 对癌症免疫治疗具有前景.
- 目前的挑战包括差异化效率低和CAR-M功能有限.
研究的目的:
- 开发一种高效的hPSC衍生CAR-M生成系统.
- 增强hPSC-CAR-Ms.的体外和体内抗瘤活性.
- 探索hPSC-CAR-Ms.的临床转化策略.
主要方法:
- 建立了一个基于单层的系统,以有效地将hPSC分化为巨细胞.
- 选的CAR结构产生hPSC-CAR-Ms具有稳定的表达和强大的体外活性.
- 利用干扰素-γ和单酸脂A激活先天性免疫力,并在体内再极化巨细胞.
- 研究了先天性和适应性免疫反应的联合激活.
主要成果:
- 在3周内实现了每hPSC大约6,000个巨细胞的高产量生产.
- 在实验室中证明了hPSC-CAR-Ms的稳定CAR表达和强大的瘤杀伤活性.
- 通过激活先天免疫反应和再极化巨细胞,成功增强了体内抗瘤功效.
- 显示,结合天生的适应性免疫激活进一步增强了抗瘤效应.
结论:
- 该研究提出了一个强大的系统,用于高效的hPSC-CAR-M生产.
- 开发了方法来克服CAR-M in vivo功能的局限性.
- 这些发现支持hPSC-CAR-Ms用于增强癌症免疫治疗的临床转化.
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