Figure 4. Synergistic toxic effect of AZD7762 and gemcitabine on Lkb1-null cells.
Lkb1-null t2, t4, and t5 cells were treated with AZD7762 (0-500 nM) alone or in combination with gemcitabine at the indicated concentration for 4 days and then cell viability was determined using CellTiter-Glo Assays.
A, plot of relative cell viability (%) versus AZD7762 at gradient constant and gemcitabine (Gemc) at constant concentration. Significance of AZD7762 alone versus combined AZD7762 and gemcitabine was calculated by two-way ANOVA. ****, p value ≤ 0.0001.
B, bar graph showing IC50 of AZD7762 alone or in combination with gemcitabine (Gemc) on Lkb1-null cell lines as calculated by GraphPad.
C, CI values calculated using CalcuSyn software. A CI of 0.1-0.3 indicates a strong synergy effect, and a CI of 0.3-0.7 indicates a synergy effect.