自给自足的初级自然杀手细胞被设计成表达T细胞受体和介质白素-15表现出改善的效应器功能和持久性
Els P van Hees1, Laura T Morton1, Dennis F G Remst1
1Department of Hematology, Leiden University Medical Centre (LUMC), Leiden, Netherlands.
Frontiers in immunology
|May 1, 2024
概括
经过基因工程改造的自然杀手 (NK) 细胞表达T细胞受体 (TCR) 并分泌IL-15,表现出增强的抗瘤活性. 这种新的NK:TCR/IL-15疗法对治疗异质瘤有前途,但由于潜在的副作用,需要仔细监测.
科学领域:
- 免疫治疗是一种免疫疗法.
- 细胞工程 细胞工程
- 在瘤学瘤学.
背景情况:
- 自然杀手 (NK) 细胞可以用T细胞受体 (TCR) 进行工程设计,以向瘤.
- NK 细胞的扩张和存活取决于互白素-15 (IL-15).
- 通过NK:TCR细胞自主产生IL-15,可以提高它们的持续性和有效性.
研究的目的:
- 开发和评估一个优化的NK:TCR产品,设计用于自主IL-15生产 (NK:TCR/IL-15).
- 评估NK:TCR/IL-15细胞的增殖,生存和细胞毒性能力.
- 在B细胞恶性瘤的临床前模型中研究NK:TCR/IL-15的治疗潜力.
主要方法:
- 逆转录病毒转导用于表达外周血液NK细胞中的瘤特异性TCR.
- 工程NK:TCR/IL-15细胞与控制NK:TCR细胞进行了比较,用于细胞因子的产生,增殖和生存.
- 对恶性B细胞系的效应器功能进行了评估in vitro和在一个正极形小鼠模型in vivo.
主要成果:
- 病毒IL-15基因被纳入NK:TCR细胞是成功的,保持高TCR表达.
- 由于自给自足的IL-15分泌,NK:TCR/IL-15细胞在没有外源性细胞因子的情况下在体外增殖.
- 在一个实验组中观察到增强的TCR和NK介导细胞毒性和改善的体内表现,以及意外的器官积累和死亡率.
结论:
- NK:TCR/IL-15细胞可以独立于外部细胞因子繁殖,显示出增强的疗效.
- 工程细胞表现出强大的TCR和NK介导的抗瘤活性.
- 虽然有效,但潜在的毒性,如器官积累,需要进一步调查和仔细的临床翻译.
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