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Neoplasma Vol.61, No.3, p.265-273, 2014 |
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Title: MicroRNA-19b targets Mfn1 to inhibit Mfn1-induced apoptosis in osteosarcoma cells | ||
Author: X. Li, F. S. Wang, Z. Y. Wu, J. L. Lin, W. B. Lan, J. H. Lin | ||
Abstract: Accumulative evidence has confirmed that, miR-17-92, a typical polycistronic mRNA cluster, was up-regulated in various solid tumors, and play an important role in the occurrence and development progress of tumors. In our study, we detected the six members of miR-17-92 cluster in osteosarcoma cell line, finding that the expression of miR-17 and miR-19b was up-regulated significantly. Further studies have found that Mfn1 was one of the target genes of miR-19b and the transcription and expression level of Mfn1 were down-regulated by miR-19b. MTS, flow cytometry, TUNEL-DAPI, Annexin V-FITC and transwell assay demonstrated that Mfn1 significantly blocked the cell cycle, promoted apoptosis and inhibited proliferation and invasion of osteosarcoma cells. Whereas, miR-19b targets 3’UTR sequences of Mfn1 genes inhibit the expression of Mfn1, thus inhibited Mfn1 triggered anti-cancer effect. Taken together, miR-19b functions by targeting Mfn1 reduce the protein expression level, thus provides a novel target to understand the molecular biology and genetics mechanisms of occurrence and development of osteosarcoma, contributing to the diagnosis and therapy of osteosarcoma. |
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Keywords: Mfn1, miR-19b, osteosarcoma, cell cycle arrest, apoptosis | ||
Published online: 31-Jan-2014 | ||
Year: 2014, Volume: 61, Issue: 3 | Page From: 265, Page To: 273 | |
doi:10.4149/neo_2014_034 |
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