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  • Title: Downregulation of NEAT1 Suppresses Cell Proliferation, Migration, and Invasion in NSCLC Via Sponging miR-153-3p.
    Author: Zhao L, Bi M, Zhang H, Shi M.
    Journal: Cancer Biother Radiopharm; 2020 Jun; 35(5):362-370. PubMed ID: 32380843.
    Abstract:
    Background: Long noncoding RNA nuclear enriched abundant transcript 1 (NEAT1) has been reported to play a promotive role in nonsmall cell lung cancer (NSCLC) progression through microRNAs (miRNAs). However, the exact influence and mechanism of NEAT1 were unsatisfied. Methods: Quantitative real-time polymerase chain reaction was applied to examine the expression of NEAT1 and miR-153-3p. The cell proliferation ability, apoptosis rate, migration, and invasion were measured by Cell Counting Kit-8 (CCK8) assay, flow cytometry, and transwell assay, respectively. The epithelial-mesenchymal transition process and Wnt/β-catenin signaling pathway were verified by Western blot. The interaction between NEAT1 and miR-153-3p was confirmed by dual-luciferase reporter assay and RNA immunoprecipitation assay. Results: These data showed that NEAT1 is highly expressed in NSCLC tissues and cell lines. Knockdown of NEAT1 suppresses cell proliferation, invasion, migration, and induces the cell apoptosis in NSCLC cell lines. At the same time, NEAT1 directly interacts with miR-153-3p in NSCLC. In addition, upregulation of miR-153-3p inhibits the cell progression, and miR-153-3p inhibitor recovers the inhibition effect of si-NEAT1 in NSCLC cell lines. Subsequently, si-NEAT1 inhibits Wnt/β-catenin signaling pathway, which is reactivated by miR-153-3p inhibitor. Conclusions: Knockdown of NEAT1 could suppress cell proliferation, migration, and invasion of NSCLC while promoting cell apoptosis through sponging miR-153-3p.
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