Journal: Synthetic Biology
Article Title: biGMamAct: efficient CRISPR/Cas9-mediated docking of large functional DNA cargoes at the ACTB locus
doi: 10.1093/synbio/ysaf003
Figure Lengend Snippet: (a) biGMamAct assembly. GOIs inserted into the psLIB shuttle plasmids of the biGMamAct expression system can be PCR amplified using the standard bioinformatically designed primers of the biGBac system for further assembly into the recipient psBIG1a ACTB T2ATetP2AP-mAGH leading to all-in-one pDONOR generation. (b) KI design. Cotransfection of the pDONOR 6colors plasmid with a Cas9-containing one targeting ACTB locus will lead to pDONOR stable and precise integration via HITI at the ACTB locus with high efficiency. Indeed, ACTB sgRNA targeted sequence is present in reverse orientation in pDONOR for linearization by Cas9 endonuclease and orientation-controlled integration in the genome. sgRNA target sequence and resulting junctions are depicted (PAM is underlined, and DNA sequence from pDONOR in bold). (C) Cloning validation. Agarose gels showing recombining and positive pDONOR 6colors clones (left) and correct sgRNA ACTB cloning in pX458 (right).
Article Snippet: ACTB sgRNA cloning is achieved by annealing two ssDNA primers ( ACTB _For 5ʹ CACCGACAGCTCCCCACACACCAC 3ʹ and ACTB _Rev 5ʹ AAACGTGGTGTGTGGGGAGCTGTC 3ʹ) and subsequent ligation in a Bbs1-digested pX458 (Addgene #48138).
Techniques: Expressing, Amplification, Cotransfection, Plasmid Preparation, Sequencing, Cloning, Biomarker Discovery, Clone Assay