(A and B) (A) Cellular and (B) media-derived metabolites from neurons expressing either an NTG guide (control) or a CRISPRi sgRNA targeting pyruvate kinase (PKM KD). Groups were compared for fractional [U-13C]glucose labeling (top) and total relative metabolite levels (bottom). See Figure S1D for corresponding isotopologue data. Data are means ± SEM. n = 4 samples/group.
(C) Schematic of PKM KD impact on [U-13C] glucose metabolism.
*p < 0.05, **p < 0.01, and ***p < 0.001 by Welch’s t tests.