TABLE 1

Summary of the IC50 values for the effect of PABA/NO on NIH3T3 cells transfected with GSTπ, γGCS, MRP1, or appropriate combinations compared with sham-transfected parental cells (3T3/pc)

Data are represented as means ± S.D. of three independent experiments.

IC50 Ratio
3T3/pc 11 ± 1.5 1.0
3T3/GCS 16 ± 3.6 1.5
3T3/GST 10 ± 1.6 0.9
3T3/GCS/GST 19 ± 2.1 1.7
3T3/MRP 51 ± 6.5 4.6
3T3/MRP/GCS 22 ± 1.3 2.0
3T3/MRP/GST 39 ± 3.0 3.5
3T3/MRP/GCS/GST 46 ± 6.3 4.2