使用CRISPR-Cas9基的细胞素和腺素基编辑器编辑Drosophila的生殖系编辑
Nirav Thakkar1,2, Adela Hejzlarova1, Vaclav Brabec1
1Biology Center of the Academy of Sciences of the Czech Republic, Institute of Entomology, Ceske Budejovice, Czech Republic.
The CRISPR journal
|November 2, 2023
概括
基编辑器在果 (Drosophila melanogaster) 中有效地实现了生殖基因编辑,在28°C的温度下性能最佳. 这项研究还产生了无时代基因的新等位基因,影响昼夜节律.
科学领域:
- 遗传学和基因组学 在
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 基因编辑提供了精确的基因组修改,但需要优化生殖系应用.
- 果Drosophila melanogaster是用于遗传研究的强大的模型生物.
研究的目的:
- 评估不同基因编辑器 (Target-AID,BE3,ABE7.10) 在Drosophila melanogaster中进行生殖基因编辑的效率.
- 为了确定在果中进行基调编辑的最佳温度条件.
- 通过基数编辑创建无时代基因的新型突变等位基因.
主要方法:
- 开发了一种指导RNA表达结构 (白色-4gRNA),针对白色基因中的拼接部位.
- 在多种温度下对转基因Drosophila菌株的基基编辑器效率进行了测试.
- 使用经典的Cas9作为非同类末端连接的参考.
- 使用Target-AID基础编辑器创建了永恒基因的新等位基因.
主要成果:
- 生殖系基因编辑效率在28°C时最高,这是果的最佳温度.
- 目标-AID,BE3和ABE7.10在生殖线编辑方面表现出不同的效率.
- 成功生成了无时代基因 (timSS308-9FL) 的一个新的基基编辑等位基因.
结论:
- 基编辑器是Drosophila melanogaster中稳定的生殖基因编辑的有效工具.
- 温度显著影响果的基编辑效率.
- 白-4gRNA 飞行线作为测试新型基准编辑器的有价值平台.
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