Abstract
Background
Long noncoding RNAs (lncRNAs) OGFRP1 is up-regulated in endometrial cancer and cervical carcinoma, and OGFRP1 suppression inhibits the malignant behaviour of cancer cells. However, the role of OGFRP1 in non-small-cell lung cancer (NSCLC) have not been investigated. Here, we evaluated the expression pattern, biological function and potential mechanism of OGFRP1 in NSCLC.
Methods
We screened the siRNA (siOGFRP1) to down-regulate the expression of OGFRP1 in A549 and H1299 cells. The biological function of A549 and H1299 cells were examined by CCK8, wound healing and transwell assays. The molecular mechanism of OGFRP1 was further explored.
Results
siOGFRP1 significantly inhibited the cell proliferation, migration and invasion of A549 and H1299 cells. In addition, the expression of EMT-related and apoptosis-related proteins was changed by siOGFRP1 transfection. MiR-4640-5p could directly bind to the 3’ UTR region of eIF5A1. Moreover, OGFRP1 bound to miR-4640-5p through the same binding site, which facilitated the expression of eIF5A1. eIF5A1 overexpression rescued cell proliferation, migration and invasion inhibition induced by OGFRP1 down-regulation and miR-4640-5p up-regulation in A549 and H1299 cells.
Conclusions
Taken together, we demonstrated that down-regulation of OGFRP1 inhibited the progression of NSCLC through miR-4640-5p/eIF5A1 axis.