对细胞疗法适用的差异化和持久的全基因策略
Utsav Jetley1, Ishina Balwani1, Palak Sharma1
1Intellia Therapeutics, Inc, Cambridge, MA, USA.
Cytotherapy
|November 7, 2025
概括
这项研究提出了一种使用基因编辑来预防免疫排斥的"现成"全基因T细胞疗法. 这种可扩展的方法可以有效地生产强大的异种CAR T细胞,并为再生医学带来希望.
科学领域:
- 免疫治疗是一种免疫疗法.
- 基因编辑 基因编辑
- 再生医学是一种再生医学.
背景情况:
- 自主T细胞疗法有前途,但面临制造方面的挑战.
- 个性化生产限制了T细胞疗法的广泛使用.
研究的目的:
- 开发一种持久的,现成的全源性 (Allo) T细胞疗法.
- 为了克服自身T细胞制造的局限性.
主要方法:
- 使用多重的Nme2Cas9基编辑器淘汰人类白细胞抗原 (HLA) 类I和II等位基因 (HLA-A,HLA-B,CIITA),同时保留HLA-C.
- 采用CRISPR/Cas9和腺相关病毒用于特定站点的CAR或TCR集成到TRAC位点.
- 优化的T细胞工程与正交的CRISPR/Cas9裂变,基编辑器和脂质纳米粒子输送.
主要成果:
- 实现了具有高编辑速率和可扩展性的全源CAR T细胞 (Allo-CAR T) 的高效生产.
- 在临床前试验中,表现出异性T细胞与自身同类细胞的可比功能活性.
- 使用基因编辑方法将染色体异常最小化.
结论:
- 匹配剩余的HLA-C等位基因可以防止宿主T细胞和NK细胞对捐赠T细胞进行排斥.
- 这种方法通过去除内源性TCR来预防移植对宿主疾病.
- 全基因T细胞疗法和基因编辑iPSC (TKO) 显示出再生医学应用的潜力.
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