Upregulation of lncRNA DANCR functions as an oncogenic role in non-small lung cancer by regulating miR-214-5p/CIZ1 axis.

OBJECTIVE:Lung cancer has an unfavorable prognosis due to the lack of efficient diagnostic and therapeutic strategies. Therefore, this study sought to figure out the effect of long non-coding RNA (lncRNA) DANCR on lung cancer progression. PATIENTS AND METHODS:LncRNA DANCR and miR-214-5p expressions in non-small cell lung cancer (NSCLC) were detected by Real Time-quantitative (RT-qPCR). Function assays, including Cell Counting Kit-8 (CCK-8) and flow cytometric analysis were conducted to clarify the role of DANCR and miR-214-5p in the progression of NSCLC. Western blot, Dual-Luciferase reporter assay, and RNA immunoprecipitation assay (RIP) were performed to elucidate the underlying mechanism. RESULTS:LncRNA DANCR was upregulated in NSCLC. The knockdown of lncRNA DANCR inhibited cell proliferation and accelerated cell apoptosis in NSCLC. LncRNA DANCR interacted with miR-214-5p. MiR-214-5p over-expression partially reversed the regulatory effects of DANCR on proliferation and apoptosis in NSCLC. In addition, CIZ1 was the downstream gene binding miR-214-5p. LncRNA DANCR could regulate the miR-214-5p/CIZ1 axis. CONCLUSIONS:Downregulation of lncRNA DANCR inhibited cell proliferation and induced cell apoptosis in NSCLC by regulating the miR-214-5p/CIZ1 axis. LncRNA DANCR may act as an oncogene and promote the progression of NSCLC.

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