title: MiR-451 suppresses proliferation, migration and promotes apoptosis of the human osteosarcoma by targeting macrophage migration inhibitory factor.
abstract: Previous studies have shown that MiR-451 plays an important role in human osteosarcoma carcinogenesis, but the underlying mechanism by which MiR-451 affects the osteosarcoma has not been fully understood. This study intends to uncover the mechanism by which MiR-451 functions as a tumor suppressor. The expression of MiR-451 in osteosarcoma tissues and osteosarcoma cell lines was monitored by real-time PCR. The proliferation ability was examined by MTT and cell cycle assay. The migration and apoptosis of cells were monitored by migration assay and flow cytometry, respectively. Moreover, the angiogenesis of HUVEC cells transfected with MiR-451 mimics was examined by tube formation assay. The effect of MiR-451 on MIF was determined by luciferase assays and Western blot assay. The results showed that MiR-451 expression level was significantly reduced in the osteosarcoma compared with normal bone tissues. Overexpression of MiR-451 significantly attenuated the proliferation and migration, and induced the apoptosis of osteosarcoma cells. Furthermore, the angiogenesis of HUVEC cells transfected with MiR-451 mimics was assayed and the decreased angiogenic ability was detected compared to the controls. Finally, we demonstrated that MiR-451 overexpression inhibited the malignant behavior of osteosarcoma by downregulating MIF. These findings suggest that MiR-451 may act as a tumor suppressor in osteosarcoma. MiR-451 inhibited cell proliferation, migration and angiogenesis and promoted apoptosis of human osteosarcoma cells, at least partially, by inhibiting the expression of MIF. MiR-451/MIF may be a novel therapeutic target in treatment of osteosarcoma.
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China; Department of Orthopedics, The People's Hospital of Gaoming District of Foshan City, Guangdong 528500, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China.
authors.forename: Sheng-Yao
authors.initials: SY
authors.lastname: Liu
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China.
authors.forename: Yong-Bin
authors.initials: YB
authors.lastname: He
authors.affiliation: Department of Orthopedics, The People's Hospital of Gaoming District of Foshan City, Guangdong 528500, China.
authors.forename: Rui-Liang
authors.initials: RL
authors.lastname: Huang
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China.
authors.forename: Song-Yun
authors.initials: SY
authors.lastname: Deng
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China; Department of Rehabilitation Medicine, First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou 350005, China. Electronic address: fgxni@graduate.hku.hk.
authors.forename: Guo-Xin
authors.initials: GX
authors.lastname: Ni
authors.affiliation: Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue (N), Guangzhou 510515, China. Electronic address: yubincsgk@163.com.
authors.forename: Bin
authors.initials: B
authors.lastname: Yu
mesh_terms: D017209:Apoptosis / Q000235:genetics*; D001859:Bone Neoplasms / Q000235:genetics* / Q000473:pathology; D002453:Cell Cycle / Q000235:genetics; D002460:Cell Line; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000235:genetics*; D049109:Cell Proliferation / Q000235:genetics*; D015536:Down-Regulation / Q000235:genetics; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics; D016147:Genes, Tumor Suppressor / Q000502:physiology; D061307:Human Umbilical Vein Endothelial Cells; D006801:Humans; D019746:Intramolecular Oxidoreductases / Q000235:genetics*; D008263:Macrophage Migration-Inhibitory Factors / Q000235:genetics*; D035683:MicroRNAs / Q000235:genetics*; D009361:Neoplasm Invasiveness / Q000235:genetics; D009389:Neovascularization, Pathologic / Q000235:genetics / Q000473:pathology; D012516:Osteosarcoma / Q000235:genetics* / Q000473:pathology
chemical_list: C531201:MIRN451 microRNA, human; D008263:Macrophage Migration-Inhibitory Factors; D035683:MicroRNAs; D019746:Intramolecular Oxidoreductases; C515598:MIF protein, human
keywords: Apoptosis; MIF; MiR-451; Migration; Osteosarcoma; Proliferation