在大米中使用CRISPR/Cas12i3进行基因组编辑.
Ping Lv1,2, Fei Su1,2,3, Fangyuan Chen1,2
1Bellagen Biotechnology Co. Ltd, Ji'nan, China.
Plant biotechnology journal
|October 12, 2023
概括
研究人员开发了一个基于CRISPR/Cas12i3的基因组编辑系统iMAGE,用于高效的基因编辑和水的结构变异. 这项技术还使得能够创造出抗除草剂的耐药大米植物.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组编辑技术的技术.
- 生物技术是生物技术.
背景情况:
- 克里斯普尔/卡斯系统是基因组编辑的强大工具.
- 与Cas12i3一样的V-I型CRISPR/Cas系统提供了替代的PAM特异性.
- 有效的基因组编辑工具对于作物改进至关重要.
研究的目的:
- 在大米中描述Cas12i3的基因组编辑能力.
- 使用Cas12i3.3开发一个多重基因组编辑系统.
- 探索Cas12i3在产生作物特征中的应用,例如抗除草剂的耐药性.
主要方法:
- 在大米中Cas12i3内核酶活性的表征.
- 基于CRISPR/Cas12i3的多重复性直接重复 (DR) 间隔数组基因组编辑 (iMAGE) 系统的开发.
- 为目标突变构建已关闭的Cas12i3基编辑器.
主要成果:
- 通过iMAGE系统,在米中证明了高效的多重基因编辑.
- 与CRISPR/Cas9.9相比,基于Cas12i3的编辑导致染色体结构变异的频率更高.
- 通过使用Cas12i3基编辑器成功生成了抗除草剂耐药的米植物.
结论:
- CRISPR/Cas12i3是植物基因组工程的一种多功能工具.
- 该iMAGE系统提供了多重编辑和诱导结构变化的增强功能.
- 基于Cas12i3的基础编辑为通过精密育种开发改进的作物品种提供了途径.
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