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Statins are the most effective drugs used in the reduction of intracellular synthesis of cholesterol. Numerous studies have confirmed that statins reduce the risk of multiple types of cancers. Statin use in cancer patients is associated with reduced cancer-related mortality. Epithelial-to-mesenchymal transition (EMT), a complicated process programmed by multiple genes, is an important mechanism of cancer metastasis. We explored the effect and mechanism of atorvastatin on the EMT process in A549 cells by establishing an EMT model in vitro induced by TGF-β1, and evaluated the effects of atorvastatin on the lower signaling pathway of TGF-β1 stimulation. Our results showed that atorvastatin partially inhibited the EMT process, and inhibited cell migration and actin filament remodeling. Transcriptional upregulation of ZEB1 and protein sphingosine kinase 1 (SphK1) induced by TGF-β1 was also suppressed. SphK1 plasmid transient transfection strengthened the EMT process induced by TGF-β1 in the presence of atorvastatin. Our experiments confirmed that atorvastatin can partially inhibit the EMT process of non-small cell lung cancer cells induced by TGF-β1 by attenuating the upregulation of SphK1.

Atorvastatin partially inhibits the epithelial-mesenchymal transition in A549 cells induced by TGF-β1 by attenuating the upregulation of SphK1