Abstract
Long noncoding RNAs (lncRNAs) play important roles in the formation and progression of many types of human malignancies. The aim of our study was to investigate the expression and biological functions of the lncRNA BRAF-activated noncoding RNA (BANCR) in human osteosarcoma. BANCR expression was quantified by real-time PCR in human osteosarcoma cell lines and tissues. We analyzed the association between BANCR levels and clinicopathological factors and patient prognosis. MTT, flow cytometric, and transwell invasion assays were performed to observe the effects of BANCR on MG-63 cell biological behaviors. BANCR overexpression was observed in osteosarcoma cell lines and clinical specimens. Increased BANCR expression was significantly associated with large tumor size, positive distant metastasis, and advanced clinical stage. High BANCR expression in osteosarcoma was an independent predictor of poor survival. Downregulation of BANCR inhibited MG-63 cell proliferation and invasion and promoted cell apoptosis in vitro. These findings suggested that BANCR may act as a tumor promoter in osteosarcoma and could serve as a potential therapeutic target for this disease.
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