Extended Data Fig. 7. CRISPR/Cas9-mediated mutagenesis of NELL2 and GLCCI1 does not alter the proliferative capacity of CART-PSMA-TGFβRDN cells.
(a) Efficiency of CRISPR/Cas9-induced mutagenesis of NELL2 and GLCCI1 in CART-PSMA-TGFβRDN cells from n = 4 different individuals, as assessed by Sanger sequencing and TIDE analysis. Knockout (KO) effectiveness is shown relative to AAVS1 in subject-matched CART-PSMA-TGFβRDN cells. (b) In vitro proliferative capacity of CRISPR/Cas9-edited CART-PSMA-TGFβRDN cells (n = 4 independent donor samples) following serial restimulation (indicated by black arrows) with irradiated PC3 prostate tumor cells. Error bars indicate the s.e.m. (c) Antigen-dependent fold expansion of AAVS1 and GLCCI1 KO CART-PSMA-TGFβRDN cells in the presence or absence of dexamethasone (DEX; E-4M). Box plots show minimum, lower quartile, median, upper quartile and maximum (n = 6 biologically independent samples).