The following vectors have been deposited at Addgene: lenti-EF1a-dCas9-VP64-Puro, lenti-EF1a-dCas9-VPR-Puro, lenti-EF1a-dCas9-KRAB-Puro, lentiGuide-Hygro-mTagBFP2, lentiGuide-Hygro-eGFP, lentiGuide-Hygro-dTomato, lentiGuide-Hygro-iRFP670, and pLV-TetO-hNGN2-Neo.