Dalmelitinib

Dalmelitinib is an orally active selective c-Met kinase inhibitor (IC50: 2.9 nM) that binds to the ATP-binding region of c-Met. Dalmelitinib induces the phosphorylation of MET, partially or completely inhibits the phosphorylation of AKT and ERK. Dalmelitinib potently inhibits cancer cell (c-Met oncogene amplification) proliferation, and is used for the research of cancers like human non-small cell lung cancer (NSCLC).

Dalmelitinib (Compound 4 d) binds to the ATP-binding region of c-Met kinase, and shows slective inhibitory activity against c-Met with an IC50 value of 2.9 nM[1].Dalmelitinib (0-1 μM approximately, 3 days) inhibits cell proliferation in various c-Met oncogene amplification cancer cell lines, with IC50 values ranging from 6 nM to 33 nM[1].Dalmelitinib (0.1-1 μM, 6-24 h) significantly induces the phosphorylation of the tyrosine kinases (MET), partially or completely inhibits the downstream phosphorylation of ERK and AKT in HCCLM3 cells[1].

Dalmelitinib (Compound 4 d, intragastric administration, 10-60 mg/kg) significantly inhibits the tumor growth in a dose-dependent manner in MKN-45 tumor xenograft nude mice[1].Dalmelitinib (intragastric administration, 5 mg/kg for a single dose) shows a high plasma concentration, longer half-life and mean residence time, low clearance rates in BALB/c small nude mice[1].Dalmelitinib shows a high level of No Observed Adverse Effect Level (NOAEL) in mice long-term toxicity (225 mg/kg/day) and acute toxicity (600 mg/kg/day)[1].

References:
[1]. Junjun Zhao, et al. Synthesis and biological evaluation of new [1,2,4]triazolo[4,3-a]pyridine derivatives as potential c-Met inhibitors. Bioorg Med Chem. 2016 Aug 15;24(16):3483-93.