Journal: PLoS ONE
Article Title: CRISPR/Cas-based customization of pooled CRISPR libraries
doi: 10.1371/journal.pone.0199473
Figure Lengend Snippet: The gRNA-encoding plasmid DNA in the pooled CRISPR library contained the nucleotide sequence 5’-CGG-3’, which could be used as the PAM sequence for Cas9 proteins. Cas9 RNPs, which are complexes of Cas9 proteins and rc-gRNAs, could selectively cleave plasmid DNA possessing complementary sequences with rc-gRNA. Based on this principle, only the desired gRNAs could be depleted from the pooled CRISPR library.
Article Snippet: For generating the gRNA-depleted library, 20 μg of pooled CRISPR library plasmids DNA (human GeCKO v1 and v2 lentiviral sgRNA libraries, Addgene #1000000049) was incubated with NEBuffer 3.1 containing 1× Cas9 RNPs and a complex of 10 μg of Cas9 proteins and 7.5 μg of rc-gRNAs for 8 h at 37°C.
Techniques: Plasmid Preparation, CRISPR, Sequencing