Amuvatinib (MP470) inhibits c-Kit (D816V), c-Kit (D816H), c-Kit (V560G), c-Kit (V654A), PDGFRα (D842V), and PDGFRα (V561D) with IC50s of 950 nM, 10 nM, 34 nM, 127 nM, 81 nM, and 40 nM, respectively.
Amuvatinib (MP470), a novel receptor tyrosine kinase (RTK) inhibitor has shown growth inhibitory activity against a variety of cancer cell lines. Amuvatinib (0.1-10 μM, 4 days incubation) is effective on LNCaP and PC-3 cells with IC50s of ~4 μM and 8 μM, respectively. When Erlotinib (10 μM) is combined with varying doses of Amuvatinib, the IC50 of Amuvatinib decreases to 2 μM on LNCaP cells.
Akt activity (as measured by phosphorylation on Ser473) is significantly reduced by 10 μM Amuvatinib (treated for 30 hours) alone but is not reduced by Erlotinib or Imatinib Mesylate (IM). Moreover, Amuvatinib plus Erlotinib completely abolished Akt phosphorylation in LNCaP cells with an unchanged total protein level of Akt.
Cell Viability Assay
Cell Line: |
Prostate cancer cell lines (LNCaP, PC-3 and DU-145) |
Concentration: |
0.1-10 μM |
Incubation Time: |
4 days |
Result: |
The IC50 for LNCaP and PC-3 was ~4 μM and 8 μM, respectively. Had only a modest effect on the viability of DU-145 cells. |
Western Blot Analysis
Cell Line: |
LNCaP cells
|
Concentration: |
2,5,10 μM |
Incubation Time: |
30 hours |
Result: |
Akt activity (as measured by phosphorylation on Ser473) was significantly reduced at 10 μM. |