Journal
ONCOTARGETS AND THERAPY
Volume 12, Issue -, Pages 135-146Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/OTT.S186607
Keywords
DANCR; NSCLC; progression; biomarker
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Funding
- Guidance Project of Zhenjiang Municipal Science and Technology Bureau [FZ2017038]
- Guidance Project of Nantong Municipal Science and Technology Bureau [HS13922]
- Foundation of Clinical Science and Technology of Wuxi [MS201609]
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Background: Long non-coding RNAs (lncRNAs) play important roles in human cancers. However, the functional roles of lncRNAs in non-small-cell lung cancer (NSCLC) and the underlying mechanisms are not well understood. Methods: We examined the expression of lncRNA DANCR in NSCLC by qRT-PCR and explored its biological roles in NSCLC progression by cell and molecular biology studies. Results: DANCR expression level was increased in human NSCLC. The knockdown of DANCR inhibited NSCLC cell proliferation by inducing cell apoptosis and cell cycle arrest. In addition, DANCR knockdown suppressed NSCLC cell migration and invasion via inhibition of epithelial-mesenchymal transition (EMT). On the contrary, DANCR overexpression had the opposite effects. DANCR knockdown inhibited EZH-2-mediated epigenetic silencing of p21 promoter and increased p21 expression. Moreover, DANCR knockdown inhibited NSCLC cell proliferation, migration, and invasion in a p21-dependent manner. Conclusion: DANCR plays oncogenic roles in NSCLC and may provide a novel biomarker for NSCLC diagnosis and prognosis.
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