TABLE 1

IC50 and IC50 resistance ratio of cisplatin, Nultin-3, and RITA in A2780, 2780CP/Cl-16, and 2780CP/Cl-24 cells

Results are presented as mean ± S.D. of three independent determinations and as ratios of IC50 in resistant cells to IC50 in sensitive (A2780) cells. The values in parentheses indicate the 95% confidence intervals calculated by propagation of error.

Cell LineParameterCisplatinaNutlin-3RITA
A2780IC50 (µM)0.25 ± 0.0240.69 ± 0.0231.07 ± 0.024
IC50 ratio111
2780CP/Cl-16IC50 (µM)6.45 ± 0.282.26 ± 0.0583.51 ± 0.37
IC50 ratio25.8 (22.0, 30.9)3.28 (3.06, 3.51)3.28 (2.72, 3.85)
2780CP/Cl-24IC50 (µM)6.78 ± 0.774.37 ± 0.652.80 ± 0.089
IC50 ratio27.1 (21.2, 34.4)6.33 (4.80, 7.90)2.62 (2.46, 2.78)
  • a The IC50 values for cisplatin were previously reported by us (Xie et al., 2017).