合成免疫检查点吸引剂保护HLA缺乏的iPSC和衍生品免受先天性免疫细胞细胞毒性影响
Alessia Gravina1, Grigol Tediashvili1, Yueting Zheng2
1Transplant and Stem Cell Immunobiology (TSI)-Lab, Department of Surgery, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
Cell stem cell
|November 3, 2023
概括
使用新型免疫检查点诱导剂的工程低免疫细胞可以克服异构细胞疗法中的免疫排斥,改善免疫瘤学和再生医学应用的持久性和有效性.
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:
- 同源细胞疗法面临着显著的免疫排斥,与自身治疗相比,限制了它们的疗效.
- 工程低免疫细胞是一种有前途的策略,可以增强全原细胞产品的治疗益处.
研究的目的:
- 开发一种新型的激动性免疫检查点接触剂,以保护全基细胞治疗药物免受免疫排斥.
- 评估这些参与者的有效性,以防止先天性免疫细胞媒介杀死和抗体媒介排斥.
主要方法:
- 工程人类白细胞抗原 (HLA) 枯竭诱导的多能干干细胞衍生的内皮细胞 (iECs).
- 利用了针对TIM3和SIRPα的激动性免疫检查点参与者.
- 结合SIRPα与切断的CD64进行激活,以增强免疫逃避.
主要成果:
- 激进的TIM3和SIRPα参与者保护工程化iECs免受自然杀手 (NK) 细胞和巨细胞的杀戮.
- 结合SIRPα参与剂和截断的CD64使iECs完全免疫逃避,防止细胞和IgG抗体介导排斥.
- 合成参与者表现出高的目标特异性和没有逆行信号.
结论:
- 合成免疫检查点吸引剂提供了一个模块化的方法,以实现在全基细胞治疗中实现免疫逃避.
- 这一策略有潜力通过改善全原细胞治疗结果来推进免疫瘤学和再生医学.
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