通过mRNA输送进行体内造血干细胞的修饰
Laura Breda1, Tyler E Papp2, Michael P Triebwasser1,3
1Department of Pediatrics, Hematology, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Science (New York, N.Y.)
|July 27, 2023
概括
这项研究引入了一种针对造血干细胞 (HSC) 的新型CD117/LNP-mRNA系统. 这种平台可以在体内进行基因编辑和干细胞移植的非遗传毒性调节,
科学领域:
- 血液学
- 基因治疗
- 纳米医学
背景情况:
- 造血干细胞 (HSC) 对于终身血液细胞的产生至关重要.
- 血造干细胞移植 (HSCT) 用于取代患病的HSC,但具有显著的副作用和有限的可用性.
- 目前的HSCT调节方法往往具有基因毒性和侵入性.
研究的目的:
- 开发一个新的针对性交付系统.
- 为了使HSCT能够进行体内基因编辑和非基因毒性调节.
- 通过直接修改HSC来探索遗传性血液疾病的潜在治疗方法.
主要方法:
- 开发CD117/LNP-mRNA,一种囊括mRNA的脂质纳米粒子 (LNP),并向HSC上的CD117受体.
- 在人体内提供基于CD117/LNP的编辑系统.
- 使用CD117/LNP系统在体内输送亲细胞亡的PUMA (p53上调调节细胞亡的mRNA).
主要成果:
- 通过CD117/LNP编辑系统实现了近乎完整的造血状细胞校正.
- 在体内通过CD117/LNP调节的HSC功能传递PUMA mRNA.
- CD117/LNP系统为HSCT提供了非遗传毒性条件.
结论:
- 用CD117/LNP-mRNA在体内向HSC提供了一个有前途的非遗传毒性调节策略.
- 这种平台有可能在体内进行基因编辑来治疗遗传疾病,从而消除传统的HSCT的需要.
- CD117/LNP系统代表了血液疾病基因治疗的重大进步.
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