Table 1.
Axl inhibition reverses EGFR resistance in mesenchymal cell lines.
| A549 | Calu-1 | H157 | H1299 | H460 | H2882 | |
|---|---|---|---|---|---|---|
| Erlotinib IC50 (μM) | 13.54 | >100 | 48.50 | >100 | >100 | >100 |
| SG-Axl-I IC50 (μM) | 0.92 | 2.44 | 0.74 | 1.74 | 2.01 | 4.29 |
| CI @IC50 | 0.46 | >1.00* | 0.67 | 0.72 | 0.57 | >1.00* |
| Combination: Erlotinib + SG-Axl-I IC50 (μM) | 1.07 + 0.35 | 13.86 + 4.47 | 1.46 + 0.47 | 3.76 + 1.21 | 3.53 + 1.14 | 16.44 + 5.30 |
for Calu-1 and H2882, the combination was antagonistic at IC50 but synergistic at higher concentration of SG-Axl-i.