BI-847325 is a selective dual inhibitor of MEK and aurora kinases (AK) with IC50 values of 4 and 15 nM for human MEK2 and AK-C, respectively.

MEK:4nM, Aurora kinase:15 nM

BI-847325 shows growth-inhibitory effects on BRAF-mutant and vemurafenib-resistant melanoma cells with IC50 ranging from 0.3 nM to 2 μM, and prevents colony formation in six BRAF-mutant melanoma cell lines. BI-847325 also induces apoptosis by reducing Mcl-1 expression. [1]

In mice bearing 1205Lu and 1205LuR xenografts, BI-847325 (75 mg/kg, p.o.) causes significant tumor suppression without significant alteration in the body weights. [1]

Assays are run in the presence of 100 μM ATP using 10 μM of substrate. 30 μL PROTEIN-MIX in 25% DMSO and incubated for 15 min at room temperature. 10 μL PEPTIDE-MIX is added, the mixture is incubated for 60 min at RT and stopped by adding 180 μL 6.4% TCA (final concentration: 5%). Incorporated phosphate is measured in a scintillation counter and IC50 values are calculated using a sigmoidal curve analysis program with variable hill slope[1].

Cells are plated at a density of 2.5 × 103 cells per 100 μL and left to grow overnight before being treated with increasing concentrations of BI-847325 for 72 hours. The metabolic activity is determined using Alamar blue reagent as per the manufacturer's protocol.(Only for Reference)