JIPB|安徽省农业科学院水稻研究所魏鹏程研究员开发高效植物胞嘧啶和腺嘌呤双重编辑器的研制

利用日本七鳃鳗CDA1-like 4建立了一个eCDAL作为c -末端胞嘧啶碱基编辑器(CT-CBE),在广泛的区域内实现了高编辑频率。将TadA-8e集成到eCDAL中,开发了一种新的植物双基编辑器DuBE (pDuBE1)pDuBE1的编辑效率可达87.6%,在稳定转化的植物细胞中,A-to-G和C-to-T同时转化的频率高达49.7%。结果表明,pDuBE1可以介导植物基因组的稳健双编辑,为作物的精确育种和植物直接进化的筛选提供了强有力的操作工具。

An eCDAL was established from Japanese lamprey CDA1-like 4 to achieve a high editing frequency in a broad region as a C-terminal cytosine base editors (CT-CBE). Then, a novel plant dual-base editors DuBE (pDuBE1) was developed by integrating TadA-8e into eCDAL. The editing efficiency of pDuBE1 could reach to 87.6%, with frequencies of concurrent A-to-G and C-to-T conversions as high as 49.7% in stably transformed plant cells. Our results showed that pDuBE1 could mediate robust dual editing in plant genome, providing a powerful manipulation tool for precise crop breeding and screening platforms for in planta direct evolution.

https://doi.org/10.1111/jipb.13146

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