Supplementary Figures 1-12 from CHK1 Inhibition Is Synthetically Lethal with Loss of B-Family DNA Polymerase Function in Human Lung and Colorectal Cancer Cells

Abstract

<p>Supplementary Figures - SF1: GI50 determinations for CHK1 inhibitor SRA737 in A549 and SW620 cells. SF2: Knockdown of POLA1, POLE or POLE2 sensitises A549 and SW620 cells to the CHK1 inhibitor MK-8776. SF3: Knockdown of CHK1 sensitises A549 cells to the DNA polymerase inhibitor aphidicolin. SF4: POLA1, POLE or POLE2 knockdown is synthetically lethal with the CHK1 inhibitor SRA737 in additional NSCLC and colorectal cancer cell lines. SF5: Western blot analysis of POLA1, POLE and POLE2 knockdown in additional NSCLC cell lines. Western blot analysis of POLA1, POLE and POLE2 knockdown in additional colorectal cancer cell lines. SF7: SRA737 and gemcitabine synergistically inhibit the proliferation of 4 NSCLC cell lines. SF8: An additive interaction between SRA737 and aphidicolin in the HBEC3-KT cell line. SF9: Effect of CHK1 or B-family DNA polymerase pharmacological inhibition alone or in combination on RPA32 phosphorylation in A549 cells. SF10: Effect of CHK1 or B-family DNA polymerase pharmacological inhibition alone or in combination on �H2AX foci in A549 cells. SF 11: Correlation between POLA1, POLE and POLE2 basal protein expression in NSCLC and colorectal cancer cell lines. SF12: Lack of correlation between POLA, POLE and POLE2 basal protein expression and SRA737 or aphidicolin combination indices in NSCLC and colorectal cancer cell lines.</p>