CRISPR/Cas9 技術 The Guide-it CRISPR/Cas9 System (Green, Cat. No. 632601; Red, Cat. No. 632602) is a complete system for the cloning and expression of a target single guide RNA (sgRNA) for mammalian gene modification studies using CRISPR/Cas9 technology. The included vector is used to simultaneously express Cas9, a target-specific sgRNA, and an exceptionally bright fluorescent protein (either ZsGreen1 or tdTomato) for monitoring transfection efficiency and/or for further enriching/isolating transfected cells by flow cytometry. The vector is pre-linearized for simple insertion of a target sequence for sgRNA expression from the human U6 promoter; Cas9 nuclease and either ZsGreen1 or tdTomato are co-expressed from a bidirectional CMV promoter. Sufficient reagents are provided in this kit for construction of 10 different target (sgRNA) expression plasmids. To construct the vector, a pair of user-provided oligos corresponding to the target genomic sequence of interest are annealed to form a duplex. Then, the duplexed DNA is cloned into the pre-linearized vector using the included high-efficiency ligation mix. This kit also contains necessary controls and Stellar? Competent Cells.

Cloning and Expression System for sgRNAs
The Guide-it CRISPR/Cas9 Systems are kits for the cloning and expression of target single guide RNAs (sgRNAs) for mammalian genome editing using CRISPR/Cas9 technology. The vector in this system simultaneously expresses Cas9 nuclease, a target-specific sgRNA, and an exceptionally bright fluorescent protein for monitoring transfection efficiency and/or for further enriching/isolating transfected cells by flow cytometry (ZsGreen1 and tdTomato versions are available). Generating a plasmid that expresses a sequence-specific sgRNA with this system is simple; a pair of user-provided oligos corresponding to the target genomic sequence of interest are annealed to form a duplex, and the duplexed oligos are inserted into the pre-linearized vector using the included high-efficiency ligation mix. The kit also includes Stellar competent cells to ensure high efficiency transformation.

Features
A single vector expresses your target-specific sgRNA from the human U6 promoter, and Cas9 nuclease and a bright fluorescent marker (either ZsGreen1 or tdTomato) are expressed from a bidirectional CMV promoter tdTomato and ZsGreen1 are exceptionally bright fluorescent proteins, 6x and 2.5x brighter than EGFP, respectively; these markers can be used to monitor transfection  efficiency and/or to enrich/isolate transfected cells by flow cytometry Simple plasmid construction—design oligos specific to your target sequence, and clone into the pre-linearized plasmid using the included ligation reagents and high- efficiency competent cells Includes sufficient reagents for construction of 10 different target (sgRNA) expression plasmids

Applications
Cloning and expression of a target single guide RNA (sgRNA) for mammalian genome editing using CRISPR/Cas9 technology