Peroxisome proliferator-activated receptor γ agonist efatutazone impairs transforming growth factor β2-induced motility of epidermal growth factor receptor tyrosine kinase inhibitor-resistant lung cancer cells.
Bottom Line: Efatutazone had no growth-inhibitory effect on the tested cells but inhibited the motility of EGFR-TKI-resistant cells in wound closure and transwell assays.Efatutazone plus erlotinib treatment provided greater inhibition of PC-9ER cell migration than efatutazone or erlotinib alone.These results suggest that efatutazone inhibits cell motility by antagonizing the TGF-β/Smad2 pathway and effectively prevents metastasis in NSCLC patients with acquired resistance to EGFR-TKI regardless of the resistance mechanism.
Affiliation: Drug Discovery and Development Division, Shizuoka Cancer Center Research Institute, Shizuoka, Japan.Show MeSH
Related in: MedlinePlus
Mentions: Efatutazone treatment induced PPARγ-mediated transcriptional activity in PC-9 and PC-9ZD cells, but not in PC-9ER cells (Fig. 4), suggesting that the inhibitory effect of efatutazone on the motility of PC-9ER cells may not be due to direct activation of PPARγ signaling, but rather may be due to off-target effects.
Affiliation: Drug Discovery and Development Division, Shizuoka Cancer Center Research Institute, Shizuoka, Japan.