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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sun, Tao Xu, Jiajun Hu, Xuebing |
| Description | Author Affiliation: Xu J ( Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, Jinan, Shandong 250021, P.R. China.); Sun T ( Department of Neurosurgery, Zaozhuang Hospital of Zaozhuang Coal Mining Group, Zaozhuang, Shandong 277101, P.R. China.); Hu X ( Department of Neurosurgery, Tengzhou Workers Hospital, Tengzhou, Shandong 277500, P.R. China.) |
| Abstract | Aberrant activation of the Wnt/ß-catenin signaling pathway is frequently observed in glioblastoma (GBM) cells. Therefore, it was hypothesized that lowdensity lipoprotein receptorrelated protein 6 (LRP6) may be involved in activating the Wnt/ßcatenin pathway in the progression of GBM. The present study reported that the expression of microRNA (miR)513c was markedly downregulated in GBM cells and GBM tissues compared with that in normal human astrocytes and normal brain tissues. Previous studies have demonstrated that miR513c is critical in a variety of biological processes in various human cancer cells. The role of this miR in GBM cells was therefore investigated in the present study. Ectopic expression of miR513c reduced the proliferation and anchorageindependent growth of GBM cells, whereas inhibition of miR513c promoted this effect. Bioinformatic analysis further identified LRP6, a putative tumor suppressor, as a potential target of miR513c. Luciferase reporter assays revealed that miR513c directly bound to the 3'untranslated region of LRP6 mRNA and repressed the expression at the transcriptional as well as the translational level. In functional assays, miR513c suppressed GBM cell proliferation, which was reversed by an inhibitor of miR513c. In conclusion, the present study provided compelling evidence that miR513c functions as a tumor suppressor miRNA, which may be important in the inhibition of cell proliferation in GBM. In addition, the tumor suppressive effects were mediated predominantly through the direct suppression of the expression of LRP6. |
| ISSN | 17912997 |
| e-ISSN | 17913004 |
| Journal | Molecular Medicine Reports |
| Issue Number | 3 |
| Volume Number | 12 |
| Language | English |
| Publisher | Spandidos Publications |
| Publisher Date | 2015-09-01 |
| Publisher Place | Greece |
| Access Restriction | Open |
| Subject Keyword | Brain Neoplasms Metabolism Glioblastoma Low Density Lipoprotein Receptor-related Protein-6 Genetics Micrornas 3' Untranslated Regions Binding Sites Tumor Markers, Biological Pathology Cell Line, Tumor Cell Proliferation Gene Expression Regulation, Neoplastic Biosynthesis Rna Interference Research Support, Non-u.s. Gov't Discipline Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Biochemistry Molecular Biology Cancer Research Molecular Medicine Oncology |
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