(a) Schematic of screen, which is based on comparing gene
essentiality both in WT versus ΔG6PD knockout cells and in ΔG6PD
versus ΔG6PD/ΔIDH1 knockout cells. (b) Top 10
conditional essential genes in ΔG6PD compared to WT HCT 116 cells based
on Z score. (c) Top 10 conditional essential genes in
ΔG6PD/ΔIDH1 compared to ΔG6PD cells based on Z score.
(d) Cell growth of targeted pooled CRISPR knockout of DCXR,
ENOX1 or ME1 in the ΔG6PD/ΔIDH1 background (mean ± SD, n =
4). After puromycin selection of transfected cells, only ME1, but not the other
tested screen hits, was validated in the targeted knockout experiments.