Abstract: Objective To investigate the regulation mechanism of miR-107 on proliferation, migration and invasion of glioma cells. Methods RT-qPCR was used to detect the expression of miR-107 and FOXK1 in human normal astrocytes NHA, glioma cell lines U87, A172 and U251. miR-NC(miR-NC group), miR-107 mimics(miR-107 group), si-NC(si-NC group), si-FOXK1(si-FOXK1 group), miR-107+pcDNA3.1(miR-107 mimics and pcDNA3.1 group), miR-107 +pcDNA3.1-FOXK1(miR-107 mimics and pcDNA3.1-FOXK1 group), were transfected respectively into U87 cells by liposome method. The proliferation of the cells was detected by CCK-8 method.The migration and invasion of the cells were detected by Transwell chamber assay. The protein expression of FOXK1 in the cells was detected by Western blot.The fluorescence activity of the cells was detected by the dual luciferase reporter assay. Results Compared with normal astrocyte NHA, the expression of miR-107 was down-regulated and the expression of FOXK1 was up-regulated in glioma cell lines U87, A172 and U251(P＜0.05). Over-expression of miR-107 and knockdown of FOXK1 inhibited U87 cell proliferation, migration and invasion. MiR-107 can inhibit the cytosolic activity of wild-type FOXK1 and negatively regulate the expression of FOXK1; over-expression of FOXK1 can reverse the inhibitory effect of miR-107 on proliferation and migration of U87 cells. Conclusions The mechanism of miR-107 inhibiting proliferation, migration and invasion of glioma cells may be related to the targeted negative regulation of FOXK1, which will provide a basis for the diagnosis and targeted therapy of glioma.

Key words: miR-107, FOXK1, glioma