在CRISPR无RNA基编辑中介的PTC阅读恢复了Otof无意义突变的小鼠的听力
Hanxiao Sun1, Qi Teng2, Wenqing Liu3,4
1The National Key Laboratory of Gene Function Studies and Manipulation, School of Life Sciences, Peking University, Beijing, China.
Nature communications
|December 6, 2025
概括
使用AAV介导的奥托费林过度表达的基因治疗显示出对先天性聋的有前途. 一种新的RNA基编辑器成功地恢复了特定的奥托费林无意义突变的小鼠模型中的听力,为临床翻译提供了希望.
科学领域:
- 遗传学 是一个遗传学.
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 分子生物学分子生物学
背景情况:
- 先天性聋是一种重大挑战,基因疗法通过AAV介导的奥托费林过度表达是一种潜在的策略.
- 实现奥托费林的生理和内源表达模式仍然是对聋症基因疗法的障碍.
研究的目的:
- 通过在Otof基因中引入同源无意义突变来创建对深度聋的小鼠模型.
- 评估"RESTART v3"RNA基编辑系统在纠正Otof无意义突变和恢复听力方面的有效性.
主要方法:
- 产生了一种具有Otof c.1315 C>T (p.R439*) 无意义突变的小鼠模型,反映了人类聋突变.
- 将没有CRISPR的"RESTART v3"RNA基编辑器送入聋小鼠模型的耳.
- 通过听觉惊反射测试,评估奥托费林表达,过早终止的编码子校正和听力恢复.
主要成果:
- 成功创建了一个无意义突变诱导的聋老鼠模型.
- 通过RNA编辑来实现生理性奥托费林表达,并纠正过早终止的编码子.
- 在接受治疗的小鼠中,观察到听力显著恢复和听力起伏反射的增强.
结论:
- 这项研究表明,在特定Otof无意义突变引起的遗传性聋症中,RNA编辑策略取得了成功.
- 在临床前的小鼠模型中",RESTART v3"系统有效地恢复了听力.
- 这种方法对未来的临床转化在治疗遗传形式的聋症中具有显著的潜力.
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