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MicroRNA-1225-5p inhibits the development and progression of thyroid cancer via targeting sirtuin 3

Sanming Wang, Xiaohang Chen, Zhenwei Zhang

    Die Pharmazie
    |July 11, 2019
    PubMed

    Insights

    microRNA-1225-5p is downregulated in thyroid cancer, inhibiting proliferation and metastasis. Targeting SIRT3 and the Wnt/β-catenin pathway, it shows potential as an anti-cancer therapeutic for thyroid cancer.

    Area of Science:

    • Molecular Biology
    • Oncology
    • Biochemistry

    Background:

    • Thyroid cancer is a prevalent endocrine malignancy.
    • MicroRNAs (miRNAs) play crucial roles in cancer development and progression.
    • Dysregulation of specific miRNAs, like miR-1225-5p, is implicated in various cancers.

    Purpose of the Study:

    • To investigate the expression and function of microRNA-1225-5p (miR-1225-5p) in human thyroid cancer.
    • To identify the molecular targets and signaling pathways regulated by miR-1225-5p.
    • To evaluate the therapeutic potential of miR-1225-5p in thyroid cancer.

    Main Methods:

    • Quantitative real-time PCR to detect miR-1225-5p and SIRT3 expression.
    • Cell proliferation, apoptosis, migration, and invasion assays.
    • Western blotting to assess Wnt/β-catenin pathway activation.
    • Bioinformatic analysis and luciferase reporter assays to confirm target interactions.

    Main Results:

    • miR-1225-5p expression was significantly downregulated in thyroid cancer tissues and cell lines.
    • Overexpression of miR-1225-5p suppressed thyroid cancer cell proliferation, migration, and invasion, while promoting apoptosis.
    • Sirtuin 3 (SIRT3) was identified as a direct target of miR-1225-5p, with its expression inversely correlated.
    • miR-1225-5p inhibited the Wnt/β-catenin pathway, and this effect was mediated through SIRT3.

    Conclusions:

    • Downregulation of miR-1225-5p contributes to thyroid cancer progression by promoting proliferation and metastasis via targeting SIRT3.
    • The miR-1225-5p/SIRT3 axis regulates thyroid cancer via the Wnt/β-catenin pathway.
    • miR-1225-5p represents a promising therapeutic target for thyroid cancer treatment.

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