基于codon优化的基数编辑器可以在大西洋鱼中有效地进行基数替换
Jinhai Wang1, Jiaqi Wang2, Alexandra Florea2
1The Roslin Institute, University of Edinburgh, Edinburgh EH25 9RG, UK; College of Animal Science and Technology, Northwest A&F University, Yangling 712100, PR China.
Trends in biotechnology
|February 28, 2026
概括
我们优化了大西洋鱼的基础编辑器 (BEs),使用鱼喜欢的编码子,提高基因编辑效率,减少非模型生物体的意外编辑. 这一进步扩大了鱼生物技术的工具箱.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 水产养殖 生物技术 生物技术
背景情况:
- 基因编辑器 (BEs) 是强大的基因编辑工具,但由于代码子使用偏差,在非模型生物中面临挑战.
- 现有的BEs,如ABE8e和CBE4max-SpRY,针对哺乳动物细胞进行了优化,限制了它们在其他物种中的有效性.
研究的目的:
- 设计和验证编码器优化的基因编辑器 (ss-ABE8e和ss-CBE4max-SpRY),用于大西洋鱼 (Salmo salar) 的增强基因编辑.
- 评估这些优化编辑器的效率和特异性,与它们的哺乳动物衍生的对应物相比.
主要方法:
- 重新设计的ABE8e和CBE4max-SpRY使用大西洋鱼喜欢的编码子.
- 在鱼细胞中使用体外记者测定验证的性能.
- 在体内通过微注射到受精的鱼卵中进行了评估,以评估编辑效率.
主要成果:
- 在大西洋鱼的体外和体内表现出高效的基替代 (ss-ABE8e,ss-CBE4max-SpRY).
- 与原始BEs相比,工程编辑显示出更高的效率和更低的旁观者活动.
- 编码于mRNA的BEs的编辑模式比编码于等离子体的BEs低,这可能是由于mRNA的稳定性.
- 通过突变多个位点,成功诱导蛋白质功能的丧失,以过早停止编码子.
结论:
- 编码优化显著提高了大西洋鱼的基编辑器效率和特异性.
- 开发的鱼特定基因编辑器 (ss-ABE8e,ss-CBE4max-SpRY) 为鱼基因编辑和生物技术应用提供了宝贵的工具.
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