Skip to main content
. 2016 Aug 12;10(8):e0004791. doi: 10.1371/journal.pntd.0004791

Table 2. Drug sensitivity profile of Tb427WT cells expressing either the wild-type F1 subunit γ gene, or the same gene with mutation S284*, either exposed to ethidium bromide or ISM, or not exposed to any trypanocide.

All data are the mean of three independent experiments and SEM.

WT ATPase γ S284* ATPase γ Unexposed S284* ATPase γ Isometamidium Exposed S284* ATPase γ Ethidium Bromide Exposed
Compound Mean EC50 (nM) Mean EC50 (nM) Resistance Factor vs. WT ATPase γ Mean EC50 (nM) Resistance Factor vs. WT ATPase γ Resistance Factor vs. Unexposed Mean EC50 (nM) Resistance Factor vs. WT ATPase γ Resistance Factor vs. Unexposed
Isometamidium 0.31 ± 0.06 31.9 ± 6.1 104* 172 ± 59 560*** 5.4*** 162 ± 46 529*** 5.1***
Ethidium Bromide 1.49 ± 0.21 554 ± 50 372*** 361 ± 16 242*** 0.65 322 ± 36 216*** 0.58
Diminazene 20.3 ± 0.8 108 ± 6.4 5.3** 132 ± 24 6.5*** 1.2 136 ± 26 6.7*** 1.3
Pentamidine 2.8 ± 0.3 7.22 ± 0.66 2.6** 2.3 ± 0.3 0.82 0.32 2.38 ± 0.73 0.84 0.33
Oligomycin 270 ± 33 1410 ± 90 5.2*** 872 ± 282 3.2** 0.62 1180 ± 170 4.4*** 0.83

Asterisks represent P-values for statistically significant resistance, as calculated using a one-tailed Student’s t-test:

*, P-value <0.05;

**, P-value <0.01;

***, P-value <0.001.