Journal: Nature Communications
Article Title: Glucose-6-phosphate dehydrogenase maintains redox homeostasis and biosynthesis in LKB1 -deficient KRAS -driven lung cancer
doi: 10.1038/s41467-024-50157-8
Figure Lengend Snippet: a Scheme illustrating KL tumor-derived cell lines (TDCLs) generation (Created with BioRender.com released under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International license). b Western blot of G6pd WT and G6pd KO KL TDCLs. Uncropped Western blot image is shown in Source Data file. c Pool size of NADPH and NADP + , and NADPH/NADP + ratio of KL TDCLs in nutrient rich conditions (complete RPMI medium). n = 4 replicates for each clone. d Pool size of GSH and GSSG, and GSH/GSSG ratio of KL TDCLs in nutrient rich conditions. n = 4 replicates for each clone. e Basal ROS level of KL TDCLs in nutrient rich conditions. n = 3 replicates for each clone. f Proliferation rate of KL TDCLs in nutrient rich conditions measured by Incucyte for 4 days (left) with statistical analysis at day 4 (right). n = 3 replicates for each clone. g Relative proliferation rate of KL TDCLs treated with G6PDi-1 for 48 hours. n = 6 replicates for each clone at different G6PDi-1 concentrations, except 2489-2 at 40 μmol/L G6PDi-1 with n = 5 replicates. h Relative proliferation rate of KL TDCLs treated with H 2 O 2 for 24 hours. For each clone, n = 6 replicates at 0 μmol/L H 2 O 2 , n = 3 replicates at 20, 40, 80 μmol/L H 2 O 2 . i ROS levels of KL TDCLs treated with 20 μmol/L H 2 O 2 for 24 hours. For each clone, n = 3 replicates at 0 and 20 μmol/L H 2 O 2 . j Growth curve of KL allograft tumors from mice treated with or without high-dose Vitamin C (Vit C). n = 10 allograft tumors for each group. k Gross pathology of allograft tumors from ( j ). Scale bar = 1 cm. l Graph of allograft tumor weight from ( k ). m Representative IHC images and quantification of NRF2 ( n = 15 images for each quantification), NQO1 ( n = 10 images for each quantification), and 8-oxo-dG ( n = 15 images for each quantification) of allograft tumors from ( k ). Scale bar = 100 μm. Data are presented as mean ± SEM, significance was calculated by two-tailed unpaired t -test (NADPH and NADP + in c , GSSG and GSH/GSSG in d ), two-tailed unpaired t -test with Welch’s correction (NADPH/NADP + in c , GSH in d ), one-way ANOVA followed by Bonferroni’s multiple comparisons test ( e , f , g , h , i , m ), or one-way ANOVA followed by t -test ( l ). Source data are provided as a Source Data file.
Article Snippet: G6pd WT ;KL and G6pd KO ;KL TDCLs were cultured in customized complete RPMI medium (RPMI medium without glucose, serine, and glycine (Teknova, Cata#R9660), supplemented with 2 g/L glucose (Sigma, Cata#G8270-1KG), 10 mg/L glycine (Sigma, Cata#50046-50 G) and 30 mg/L serine (Sigma, Cata#S4311-25G)) with 10% fetal FBS, 1% Penicillin-Streptomycin, 0.075% sodium bicarbonate, at 37°C with 5% CO 2 .
Techniques: Derivative Assay, Western Blot, Two Tailed Test