来自工程诱导多能干细胞的抗TIM3仿真抗原受体-自然杀手细胞有效向急性髓性白血病细胞
Phatchanat Klaihmon1, Sudjit Luanpitpong1,2, Xing Kang1
1Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Cancer cell international
|November 28, 2023
概括
针对TIM3+AML干细胞的工程CAR-NK细胞显示出增强的抗瘤活性. 这项研究表明iPSC衍生的CAR-NK细胞作为复发性/耐药性AML的现成疗法的潜力.
科学领域:
- 免疫治疗是一种免疫疗法.
- 干细胞生物学 干细胞生物学
- 血液学恶性瘤是什么
背景情况:
- 急性髓性白血病 (AML) 是由白血病发起细胞 (LSC) 驱动的,通常会导致复发.
- 化学抗原受体 (CAR) -T细胞疗法显示出有前途,但有局限性.
- 自然杀手 (NK) 细胞提供了一个更安全的替代方案,避免了移植与宿主疾病,并使现成应用成为可能.
研究的目的:
- 从诱导多能干细胞 (iPSCs) 来设计抗TIM3 CAR-NK细胞以向AML LSCs.
- 评估这些CAR-NK细胞对AML的抗瘤疗效.
主要方法:
- 开发了一个CAR-TIM3结构,使用TIM3 scFv,CD28,4-1BB和CD3ζ信号.
- 使用CAR-TIM3构造设计了一个主iPSC线.
- 在无血清和无料条件下,分化CAR-TIM3 iPSCs变成CAR-TIM3 NK细胞.
主要成果:
- 成功生成和验证了一个CAR-TIM3 iPSC克隆.
- 确认了CAR-TIM3 iPSCs的多能性和差异化能力.
- 与野生型NK细胞相比,CAR-TIM3NK细胞对TIM3+AML细胞表现出增强的抗瘤活性.
结论:
- 来自iPSC的CAR-NK细胞是现有免疫疗法的可行来源.
- 该差异化协议支持开发符合良好制造实践 (GMP) 的CAR-NK细胞疗法,用于临床使用.
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