miR-590-3p is a novel microRNA which suppresses osteosarcoma progression by targeting SOX9
[Display omitted] •MiR-590-3p down-regulation was observed both in osteosarcoma tissue samples and cell lines.•Over-expression of miR-590-3p significantly inhibits osteosarcoma cells proliferation and metastasis.•SOX9 was identified as a direct target of miR-590-3p.•Enforced SOX9 expression partiall...
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Published in | Biomedicine & pharmacotherapy Vol. 107; pp. 1763 - 1769 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
France
Elsevier Masson SAS
01.11.2018
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Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•MiR-590-3p down-regulation was observed both in osteosarcoma tissue samples and cell lines.•Over-expression of miR-590-3p significantly inhibits osteosarcoma cells proliferation and metastasis.•SOX9 was identified as a direct target of miR-590-3p.•Enforced SOX9 expression partially reversed miR-590-3p effects in osteosarcoma cells.
Osteosarcoma is the most common primary bone malignancy and arises primarily in the metaphyseal ends of long bones in children and adolescents. m iR-590 has been found to have anti-tumor effects in many other cancers. However, the role of miR-590-3p in osteosarcoma is poorly understood. In this study, we show that miR-590-3p was significantly decreased both in osteosarcoma tissues and cell lines, suggesting a potential role of miR-590-3p in osteosarcoma. Over-expression of miR-590-3p inhibited U2OS cell viability as shown by the CCK-8 assay and clonogenic assay. Ki-67 immunofluorescence staining and cell cycle analysis revealed that up-regulation of miR-590-3p inhibited U2OS cell proliferation. Transfection with miR-590-3p mimics suppressed PCNA, Cyclin D1 and CDK4 expression and increased p53 and p21 expression. In addition, U2OS cells transfected with miR-590-3p mimics exhibited reduced cell invasion and migration, characterized by the wound healing assay and transwell assay. Furthermore, bioinformatics analysis demonstrated that SOX9 was a potential target of miR-590-3p. SOX9 was up-regulated in osteosarcoma tissues. Transfection with miR-590-3p mimics markedly suppressed SOX9 expression both at the mRNA level and protein level. Dual luciferase assay validated the direct binding site of miR-590-3p on SOX9. Exogenous SOX9 expression in U2OS cells at least partially reversed the effects of miR-590-3p in U2OS cells. Enforced SOX9 expression restored cell viability in osteosarcoma cells transfected with miR-590-3p mimics. In addition, over-expression of SOX9 restored decreased cell metastasis properties caused by transfection with miR-590-3p mimics in osteosarcoma cells. In summary, these results indicated that miR-590-3p is an anti-cancer miRNA that can inhibit proliferation and metastasis in osteosarcoma cells. Our findings provide a novel insight into the biological function of miR-590-3p in osteosarcoma and SOX9 may be a potential therapeutic target for osteosarcoma. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0753-3322 1950-6007 |
DOI: | 10.1016/j.biopha.2018.06.124 |