Table 1. Anticancer Activity (IC50 Values after 72 h) of the Indicated Thiosemicarbazones and Metal Complexes in SW480 and Thiosemicarbazone-Resistant SW480/Coti and SW480/Tria Colon Cancer Cells.
compound | SW480 (IC50, μM)a | SW480/Coti (IC50, μM)a | relative resistanceb | SW480/Tria (IC50, μM)a | relative resistanceb |
---|---|---|---|---|---|
COTI-2 | 0.56 ± 0.16 | 9.51 ± 3.11 | 18.9* | 0.41 ± 0.16. | 0.8n.s |
Triapine | 0.82 ± 0.18 | 0.81 ± 0.08 | 1.0n.s. | >50c | >61 |
COTI-NH2 | 7.85 ± 0.92 | 4.39 ± 0.56 | 0.6*** | >20 | >2.5 |
Fe-COTI-2 | 9.32 ± 3.29 | 7.13 ± 2.91 | 0.7n.s. | 3.62 ± 0.80 | 0.3** |
Cu-COTI-2 | 0.04 ± 0.01 | 0.48 ± 0.05 | 12.0** | 0.04 ± 0.01 | 1.1n.s. |
IC50 values were calculated from concentration–response curves. Values are given as mean ± SD of three independent experiments performed in triplicates.
Differences in sensitivity calculated by dividing the IC50 values of the resistant subline by those of the parental line. ***p ≤ 0.001, **p ≤ 0.01, *p ≤ 0.05; n.s. (not significantly different), calculated by one-sample t-test.
Taken from ref.9