Table 5. Intracellular pH (pHi) Values of Sensitive, Wild-Type Resistant, and P-gp KO- and hCA XII KO-Resistant HT29 and A549 Cells.
| cell lines | pHia | cell lines | pHia |
|---|---|---|---|
| HT29 | 7.41 ± 0.05 | A549 | 7.39 ± 0.03 |
| HT29/DOX | 7.64 ± 0.06 | A549/DOX | 7.66 ± 0.06 |
| HT29/DOX KO P-gp | 7.61 ± 0.08 | A549/DOX KO P-gp | 7.69 ± 0.05 |
| HT29/DOX KO CAXII | 7.42 ± 0.07 | A549/DOX KO CAXII | 7.41 ± 0.03 |
The pHi was measured by a pH-sensitive fluorescent probe. Data are means ± standard deviation (SD) (n = 3).