CRISPR Activation (CRISPRa) allows for gene specific up-regulation by using dCas9-VPR. This fusion protein consists of the catalytically dead Cas9 (dCas9) enzyme fused to the tripartite transcriptional activator complex VPR (VP64, p65 and Rta) in dCas9-VPR. sgRNAs are designed to target and guide dCas9-VPR to the upstream 5' UTR promoter region of a specific gene thereby resulting in transcriptional up-regulation.
The CRISPRa Gene Activation Constructs come as a set of three sgRNA targets which are designed to be used with dCas9-VPR (pLenti-SFFV-dCas9-VPR). When paired together, the sgRNAs guide dCas9-VPR to the 5’ UTR of the target gene resulting in transcriptional upregulation.