In vivo targeted single-nucleotide editing in zebrafish.

In vivo targeted single-nucleotide editing in zebrafish.
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DOI:
10.1038/s41598-018-29794-9
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发表时间:
2018-07-30
期刊:
影响因子:
4.6
通讯作者:
Maegawa S
Maegawa S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tanaka S;Yoshioka S;Nishida K;Hosokawa H;Kakizuka A;Maegawa S

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迄今为止,已经开发了几种基因组编辑技术,并广泛用于生物学的许多领域。这些技术中的大多数(如果不是全部)使用核酸酶来产生DNA双链断裂(DSB),从而增加了细胞死亡和/或致癌转化的潜在风险。这些风险阻碍了它们在人类中的治疗应用。在这里,我们表明,在体内有针对性的单核苷酸编辑在斑马鱼,脊椎动物模式生物,可以成功地完成与目标-AID系统,其中涉及脱氨基的靶向胞苷创建一个核苷酸取代从胞嘧啶到胸腺嘧啶复制后。将该系统应用于斑马鱼的两个基因chordin(chd)和one-eyed pinhead(oep),成功地将提前终止密码子(TAG或TAA)引入目标基因组位点。这些修饰是可遗传的,并且忠实地产生了每个基因的已知纯合突变体的表型。这些结果首次证明了Target-AID系统可以在脊椎动物即斑马鱼中以可编程的方式在体内产生可遗传的核苷酸取代。
To date, several genome editing technologies have been developed and are widely utilized in many fields of biology. Most of these technologies, if not all, use nucleases to create DNA double-strand breaks (DSBs), raising the potential risk of cell death and/or oncogenic transformation. The risks hinder their therapeutic applications in humans. Here, we show that in vivo targeted single-nucleotide editing in zebrafish, a vertebrate model organism, can be successfully accomplished with the Target-AID system, which involves deamination of a targeted cytidine to create a nucleotide substitution from cytosine to thymine after replication. Application of the system to two zebrafish genes, chordin (chd) and one-eyed pinhead (oep), successfully introduced premature stop codons (TAG or TAA) in the targeted genomic loci. The modifications were heritable and faithfully produced phenocopies of well-known homozygous mutants of each gene. These results demonstrate for the first time that the Target-AID system can create heritable nucleotide substitutions in vivo in a programmable manner, in vertebrates, namely zebrafish.
纤维蛋白-2在斑马鱼脊索和血管形态发生中的重要作用。
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