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2X Rapid Ligation Buffer

Company: Promega
Catalog#: C671A
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Generation of Mutant Pigs by Direct Pronuclear Microinjection of CRISPR/Cas9 Plasmid Vectors
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2017-06-05
[Abstract]  A set of Cas9 and single guide CRISPR RNA expression vectors was constructed. Only a very simple procedure was needed to prepare specific single-guide RNA expression vectors with high target accuracy. Since the de novo zygotic transcription had been detected in mouse embryo at the 1-cell stage, the plasmid DNA vectors encoding Cas9 and GGTA1 gene specific single-guide RNAs were micro-injected into zygotic pronuclei to confirm such phenomenon in 1-cell pig embryo. Our results demonstrated that mutations caused by these CRISPR/Cas9 plasmids occurred before and at the 2-cell stage of pig embryos, indicating that besides the cytoplasmic microinjection of in vitro transcribed RNA, the pronuclear microinjection of CRISPR/Cas9 DNA vectors provided an efficient solution to ... [摘要]  构建了一套Cas9和单引导CRISPR RNA表达载体。 需要一个非常简单的程序来制备具有高目标精度的特异性单向RNA表达载体。 由于在1细胞期的小鼠胚胎中已经检测到了合并的合子转录,所以将编码Cas9和GGTA1基因特异性单向RNA的质粒DNA载体微注射到合子原核中以确认 1细胞猪胚胎现象。 我们的研究结果表明,这些CRISPR / Cas9质粒引起的突变发生在猪胚胎的2细胞阶段之前和之后,表明除了体外转录的RNA的细胞质显微注射外,CRISPR / Cas9 DNA载体为产生基因敲除猪提供了有效的解决方案。

背景 由于最初发现了大肠杆菌基因组(Ishino)中的大肠杆菌基因组下游的32bp间隔的串联重复的高度保守的29个碱基对(bp)序列,等等,1987; Nakata等人,1989),在约50%至50bp的大小变化的短定期间隔重复序列的家族中发现约50%细菌和90%的古细菌(Makarova等人,2015)。根据它们的特征结构,Mojica(Mojica等人,2009)和Jansen(Jansen等人)引入了定期交织的短回文重复序列(CRISPR)的名称, ,2002),目前普遍使用。首先通过核苷酸序列比对(Jansen等人,2002)在CRISPR基因座的侧翼首先鉴定了一组CRISPR相关基因 cas1 ...

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