Figure 3. Inhibition of basal ERK activity in H226, MSTO211H and H2452 cells by ponatinib.
The indicated cell lines were incubated in serum-free medium for 2 hours in the presence of increasing concentrations of ponatinib. Cell extracts were prepared and immunoblotted for phospho-ERK and as described in the Materials and Methods. The filters were stripped and reprobed for total ERK to verify equal protein loading.