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lncRNA-PVT1 Facilitates Invasion Through Upregulation of MMP9 in Nonsmall Cell Lung Cancer Cell.
DNA and Cell Biology 2017 September
Lung cancer is the most common solid tumor around the world. It has been reported that upregulation of long noncoding RNA (lncRNA) plasmacytoma variant translocation 1 (lncRNA-PVT1) is closely associated with tumor metastasis. However, the function and underlying molecular mechanism of lncRNA-PVT1 in nonsmall cell lung cancer (NSCLC) invasion remain unknown. In this study, we found that overexpression of lncRNA-PVT1 promoted the invasive ability of NSCLC cells, whereas silence of lncRNA-PVT1 suppressed cell invasion. Furthermore, we found that lncRNA-PVT1 upregulated MMP9 expression in a post-transcriptional manner. Specifically, lncRNA-PVT1 directly interacted with miR-200a and miR-200b, which suppressed MMP9 expression. Taken together, lncRNA-PVT1 functions as a competitive endogenous RNA to regulate MMP9 expression through competitively binding the common microRNAs, miR-200a and miR-200b. These findings suggest that lncRNA-PVT1 could predispose NSCLC patients to metastases and may serve as a promising target for antimetastatic therapies.
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