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. 2012 Oct 31;7(10):e48461. doi: 10.1371/journal.pone.0048461

Figure 6. FXR agonist GW4064 inhibits phosphorylation of EGFR (Tyr845), ERK1/2 and Src (Tyr 416) in SNU-C4 cells.

Figure 6

A. Time-course and dose-response for GW4064-induced inhibition of EGFR (Tyr845) phosphorylation. B. Time-course and dose-response for GW4064-induced inhibition of ERK1/2 phosphorylation. C. Time-course and dose-response for GW4064-induced inhibition of Src (Tyr 416) phosphorylation. Phosphorylation of EGFR (Tyr845), ERK1/2 and Src (Tyr 416) was determined by immunoblotting with anti-phospho-EGFR (Tyr845), anti-phospho-ERK1/2 and anti-phospho-Src (Tyr 416) antibody, respectively. For time-course experiments, SNU-C4 cells were treated with 1 µM GW4064 for the indicated times at 37°C. For dose-response experiments, cells were treated with the indicated concentrations of GW4064 for 20 min at 37°C. Immunoblotting for total EGFR, ERK2 or Src was used as a loading control. Immunoblots are representative of at least 3 separate experiments. Numbers between immunoblots represent densitometry. Experimental/control ratios were calculated after normalizing each test band to the respective EGFR, ERK2 or Src band.