Effect of Long Non-coding RNA SPRY4-IT1 on Invasion and Migration of A549 Cells

Background and objective The abnormal expression of human long chain non encoding RNA gene is related to many kinds of tumors. The aim of this study is to investigate the expression of long non-coding RNA maternally expressed gene 3 (SPRY4-IT1) in lung cancer (A549) cells, and to observe the effect of SPRY4-IT1 on the invasion and migration of A549 cells. Methods The levels of SPRY4-IT1 in A549 was detected by Real-time PCR. The effects of SPRY4-IT1 on the invasion and migration of A549 cell were analyzed by MTT and Transwell assay. The expression of matrix metalloproteinase (MMP) family proteins was determined by Western blot. Results The invasion and migration of A549 cells were increased after SPRY4-IT1 over-expression. The cell spaces were narrower after SPRY4-IT1 over expression in the wound healing assay. Transwell assays showed that the numbers of transmembrane A549 cells were significantly higher in SPRY4-IT1 over expression group than that in control group (P<0.05). Meanwhile, over expression of SPRY4-IT1 reduced the expression of MMP-2 and MMP-9. Conclusion Over expression of SPRY4-IT1 enhanced the invasion and migration of A549 cells. MMP-2 and MMP-9 might play an important role in this regulation.