Figure 2.
A one-step method to generate a multiple sgRNA delivery plasmid. (A) Schematic representation of the Lenti-multi-Guide and Lenti-multi-CRISPR plasmids. LTR, long terminal repeat; U6, U6 promoter; Lac, Lac promoter; Cmr, Chloramphenicol resistance; ccdB, toxin ccdB gene; sg Scaffold, sgRNA scaffold sequence; EF1a, EF1α promoter; Cas9, spCas9; Puro, puromycin resistance; WPRE, Woodchuck hepatitis virus post-transcriptional regulatory element. Retroviral Ψ packaging element and Rev response element were not shown. (B) Overview of the cloning strategy.