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Article Open Access

lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop

  • Authors:
    • Chun Qiu
    • Sai Li
    • Datong Sun
    • Shenghui Yang
  • View Affiliations / Copyright

    Affiliations: Department of Medical Oncology, Hainan Provincial People's Hospital, Haikou, Hainan 570311, P.R. China
    Copyright: © Qiu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1267-1272
    |
    Published online on: December 20, 2019
       https://doi.org/10.3892/ol.2019.11237
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Abstract

Biological function of plasmacytoma variant translocation 1 (PVT1) in influencing the progression of non‑small cell lung cancer (NSCLC) through Micro ribonucleic acid (miRNA)‑526b/EZH2 regulatory loop was elucidated. Relative levels of PVT1 and miRNA‑526b in NSCLC tissues were detected by quantitative real‑time polymerase chain reaction (qRT‑PCR). Prognostic potential of PVT1 in NSCLC was assessed by Kaplan‑Meier curves. The interaction among PVT1/miRNA‑526b/EZH2 regulatory loop was confirmed by dual‑luciferase reporter gene assay. Regulatory effects of PVT1/miRNA‑526b/EZH2 axis on viability and wound closure of A549 cells were evaluated by cell counting kit‑8 (CCK‑8) and wound closure assay, respectively. PVT1 was upregulated in NSCLC tissues, while miRNA‑526b was downregulated. PVT1 level was negatively related to that of miR‑526 in NSCLC tissues. Worse survival was seen in NSCLC patients expressing high level of PVT1 compared to those with low level. Knockdown of PVT1 attenuated viability and wound closure ability in A549 cells, which were partially reversed after miRNA‑526b knockdown. miRNA‑526b is the downstream target of PVT1 and its level was negatively regulated by PVT1. EZH2 is the target gene of miRNA‑526b. Transfection of miRNA‑526b mimic remarkably downregulated EZH2 in A549 cells. Importantly, the attenuated viability and wound closure ability in A549 cells overexpressing miRNA‑526b were reversed after EZH2 overexpression. PVT1 is upregulated in NSCLC, and predicts a poor prognosis. PVT1 accelerates the progression of NSCLC via targeting miRNA‑526b/EZH2 regulatory loop.
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Copy and paste a formatted citation
Spandidos Publications style
Qiu C, Li S, Sun D and Yang S: lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop. Oncol Lett 19: 1267-1272, 2020.
APA
Qiu, C., Li, S., Sun, D., & Yang, S. (2020). lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop. Oncology Letters, 19, 1267-1272. https://doi.org/10.3892/ol.2019.11237
MLA
Qiu, C., Li, S., Sun, D., Yang, S."lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop". Oncology Letters 19.2 (2020): 1267-1272.
Chicago
Qiu, C., Li, S., Sun, D., Yang, S."lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop". Oncology Letters 19, no. 2 (2020): 1267-1272. https://doi.org/10.3892/ol.2019.11237
Copy and paste a formatted citation
x
Spandidos Publications style
Qiu C, Li S, Sun D and Yang S: lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop. Oncol Lett 19: 1267-1272, 2020.
APA
Qiu, C., Li, S., Sun, D., & Yang, S. (2020). lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop. Oncology Letters, 19, 1267-1272. https://doi.org/10.3892/ol.2019.11237
MLA
Qiu, C., Li, S., Sun, D., Yang, S."lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop". Oncology Letters 19.2 (2020): 1267-1272.
Chicago
Qiu, C., Li, S., Sun, D., Yang, S."lncRNA PVT1 accelerates progression of non‑small cell lung cancer via targeting miRNA‑526b/EZH2 regulatory loop". Oncology Letters 19, no. 2 (2020): 1267-1272. https://doi.org/10.3892/ol.2019.11237
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