CX-4945 inhibits TGF-β1-induced Wnt signaling.

<p>The effect of CX-4945 on TGF-β1-induced Wnt activation was evaluated by measuring the transcriptional activity of β-catenin (A) and its expression in cytosolic and nuclear fractions (B). For Western blot analysis, A549 cells were treated with TGF-β1 (5 ng/ml) alone or in combination with CX-4945 in media containing 0.1% FBS for 48 h. Actin was used as a loading control. (C) Nuclear translocation of β-catenin and its inhibition by CX-4945 were confirmed by immunocytochemistry. Nuclei were counterstained with Hoechst 33342. All scale bars represent 20 µm.