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MicroRNA-124 Functions as a Tumor Suppressor by Regulating CDH2 and Epithelial-Mesenchymal Transition in Non-Small

Teng Ma, Ye Zhao, Ke Wei

    Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
    |April 14, 2016
    PubMed
    Abstract

    Insights

    MicroRNA-124 (miR-124) is downregulated in non-small cell lung cancer (NSCLC). This study shows miR-124 inhibits CDH2 expression and epithelial-mesenchymal transition (EMT) in NSCLC, offering a potential therapeutic target.

    Area of Science:

    • Molecular Biology
    • Oncology
    • Gene Regulation

    Background:

    • Non-small cell lung cancer (NSCLC) is associated with abnormal microRNA-124 (miR-124) expression.
    • The relationship between miR-124 and CDH2 in NSCLC remains unexplored.
    • This research investigates the inhibitory role of miR-124 on CDH2 expression in NSCLC.

    Purpose of the Study:

    • To elucidate the effect of miR-124 on CDH2 expression in non-small cell lung cancer.
    • To explore the potential of targeting miR-124 and CDH2 for lung cancer therapy.

    Main Methods:

    • Quantitative real-time polymerase chain reaction (qRT-PCR) to measure miR-124 and CDH2 levels in NSCLC tissues and cell lines.
    • In vitro assays (cell viability, apoptosis, invasion) to assess the impact of miR-124 overexpression.
    • Luciferase reporter assays and Western blot (WB) to confirm the regulatory mechanism and CDH2 as a target gene.

    Main Results:

    • NSCLC tissues and cell lines exhibited significantly reduced miR-124 expression.
    • Overexpression of miR-124 suppressed NSCLC cell proliferation and invasion.
    • CDH2 was identified as a direct target gene of miR-124.
    • Upregulation of miR-124 inhibited epithelial-mesenchymal transition (EMT) in NSCLC cells.

    Conclusions:

    • This study provides the first evidence that miR-124 suppresses CDH2 expression and regulates EMT in NSCLC.
    • Targeting the miR-124/CDH2 axis presents a promising therapeutic strategy for human lung cancer.

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