通过集成的计算-实验框架,设计 MmeFz2-ωRNA 系统以实现高效的基因组编辑.
Shangpu Li1,2, Kun Xu1,2, Guoling Li3,4
1International Joint Agriculture Research Center for Animal Bio-Breeding of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
Nature communications
|January 19, 2026
概括
改造的Fanzor蛋白在哺乳动物细胞中显示出更高的基因组编辑效率. 人工智能引导的优化带来了显著的改进,使得治疗应用,如在小鼠模型中杜氏肌肉发育不良的纠正.
科学领域:
- 分子生物学分子生物学
- 生物技术是生物技术.
- 遗传学 遗传学 是一个
背景情况:
- 细胞Fanzor蛋白质是RNA引导的核酶,具有基因组编辑潜力.
- 目前的Fanzor系统在哺乳动物细胞中表现出低于最佳的效率,限制了它们的治疗应用.
研究的目的:
- 优化 MmeFz2-ωRNA Fanzor 系统,以在哺乳动物细胞中进行增强的基因组编辑.
- 为潜在的治疗应用开发改进的Fanzor变种.
主要方法:
- 利用AlphaFold3对 ωRNA 支架进行合理的重新设计,从而产生更小和更高效的结构.
- 采用结构引导和人工智能增强的蛋白质工程来产生新的Fanzor变体 (enMmeFz2,evoMmeFz2).
- 融合了Fanzor变体与HMG-DDNA结合域,以进一步提高编辑性能.
主要成果:
- 最小化的 ωRNA 支架保持了高效率 (高达 82.2%) 并比较小 30%.
- 设计的Fanzor变体 (enMmeFz2,evoMmeFz2) 在38个基因组位点的平均活动增加了32倍.
- 范泽-HMG-D融合证明了增强的编辑,evoMmeFz2-HMG-D通过AAV传递成功地在杜申肌肉发育不良的小鼠模型中恢复了dystrophin.
结论:
- Fanzor2代表了一个有前途的基因编辑平台,用于基因组工程和治疗开发.
- 人工智能引导的工程显著加速了基因组编辑器的开发,并减少了实验工作量.
- 优化的Fanzor系统有潜力治疗诸如杜申尼肌肉发育不良等遗传疾病.
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