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. 2019 Jul 26;10:784. doi: 10.3389/fphar.2019.00784

Figure 4.

Figure 4

Effects of 3-chloroplumbagin on the inhibition of MAP kinase signaling in breast cancer cells. (A) Effects of ChPL on the expression levels of proteins involved in MAP kinase signaling. Protein levels were assessed by Western blot analysis. Densitometric analysis represents protein levels normalized to total ERK1/2 and MEK1/2 levels. (B) Effects of ChPL on the levels of p-ERK 1/2 (Thr202/Tyr204) in MDA-MB-468 and MCF-7 cells. Protein levels were determined with the AlphaScreen assay. (C) Effects of ChPL and AG1478 on the levels of p-ERK 1/2 (Thr202/Tyr204) in MDA-MB-468 and MCF-7 cells. Protein levels were determined with the AlphaScreen assay. Data were analyzed by one-way ANOVA with Tukey’s post hoc tests [p < 0.05 (*), p < 0.01 (**), p < 0.001 (***); n = 3].