title: MicroRNA-21 is involved in osteosarcoma cell invasion and migration.
abstract: MicroRNAs are involved in different cancer-related processes. MicroRNA-21 (miR-21), as an oncomiR, is overexpressed in all kinds of tumors and the role of miR-21 in carcinogenesis is elucidated in many cancers gradually. However, the function of miR-21 in osteosarcoma is still unclear. In our study, we found that miR-21 was significantly overexpressed in osteosarcoma tissues. More importantly, we confirmed that knockdown of miR-21 greatly decreased cell invasion and migration of MG-63. Furthermore, we identified that RECK (reversion-inducing-cysteine-rich protein with kazal motifs), a tumor suppressor gene, was a direct target of miR-21. Finally, the expression of RECK protein negatively correlated with the expression of miR-21 in human osteosarcoma tissues, indicating the potential regulation of RECK by miR-21. Our results suggest that miR-21 expression has a key role in regulating cellular processes in osteosarcoma, likely through regulating RECK and may serve as a therapeutic target.
authors.affiliation: Department of Orthopedics, Union Hospital, and Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1277, 430022, Wuhan, China.
authors.forename: Wu
authors.initials: W
authors.lastname: Ziyan
authors.forename: Yang
authors.initials: Y
authors.lastname: Shuhua
authors.forename: Weng
authors.initials: W
authors.lastname: Xiufang
authors.forename: Liu
authors.initials: L
authors.lastname: Xiaoyun
mesh_terms: D015153:Blotting, Western; D001859:Bone Neoplasms / Q000235:genetics* / Q000378:metabolism; D002465:Cell Movement; D058851:GPI-Linked Proteins / Q000096:biosynthesis / Q000235:genetics*; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics*; D006801:Humans; D035683:MicroRNAs / Q000235:genetics*; D009361:Neoplasm Invasiveness / Q000235:genetics; D012516:Osteosarcoma / Q000235:genetics* / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D058851:GPI-Linked Proteins; C524940:MIRN21 microRNA, human; D035683:MicroRNAs; C115460:RECK protein, human