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Article Abstract
Non-small-cell lung cancer (NSCLC) predominates lung cancer with a striking percentage of 85%. Eupafolin is documented to possess anti-tumor efficacy, which prompts efforts to uncover its impacts on the pathology of diseases including cancers. Focal adhesion kinase (FAK)-mediated phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) has been found to be associated with several carcinomas. Nevertheless, how eupafolin exerts its effects in NSCLC and whether FAK/PI3K/AKT is related to the corresponding mechanism remain unclear. Thus, the relevant experiments were carried out with NSCLC cells treated with eupafolin and/or LY294002 at first. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), colony formation, wound healing, and transwell assays were used to assess cell viability, proliferation, migration, and invasion, respectively. Western blot assay was performed to measure the relative protein expressions of phosphorylated (p)-FAK/FAK, p-PI3K/ PI3K, p-AKT/AKT, matrix metalloproteinase 9 (MMP9), and homolog gene family member A (RhoA), and to determine transfection efficiency. From experimental results, it was found that eupafolin inhibited the viability, proliferation, migration, and invasion of NSCLC cells, and inactivated the FAK/PI3K/AKT pathway by downregulating the ratios of p-FAK/FAK, p-PI3K/PI3K, and p-AKT/AKTand the expressions of MMP9 and RhoA. On the contrary, overexpressed FAK upregulated the expressions of FAK, MMP9, and RhoA and the ratios of p-PI3K/ PI3K and p-AKT/AKT, and promoted cell proliferation, migration, and invasion. LY294002, conversely, could partly reverse the effects of FAK on the aforementioned aspects of NSCLC cells. Collectively, it was verified in our study that eupafolin regulates the proliferation, migration, and invasion of NSCLC cells by downregulating MMP9 and RhoA expressions via the FAK/PI3K/AKT axis, which may provide a promising avenue for cancer therapy.
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