Table 2.
EC50 values for DNA-methyltransferase inhibitors
EC50 (μM) 48 h | pcDNA3.1 | hCNT1 | hCNT3 |
---|---|---|---|
Azacytidine | 29.5 ± 2 | 13.6 ± 0.7** | 6.8 ± 0.7*** |
Decitabine | >1000 | >1000 | >1000 |
Zebularine | 62.0 ± 5.9 | 18.5 ± 6.6** | 8.9 ± 2.0*** |
EC50 values were calculated by fitting data by non-linear regression in GraphPad Prism 4.0 software. Data are expressed as the mean ± SEM of at least three independent experiments performed on different days using different passages of cells. Unpaired Student's t-test was performed comparing the EC50 value for mock-transfected cells and hCNT1, hCNT3. (**P < 0.01; ***P < 0.001).