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Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models
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Loss of miR-217 promotes osteosarcoma cell proliferation through targeting SETD8

Guangshi Yang, Jiefeng Wang, Botao Huang

    Die Pharmazie
    |December 8, 2018
    PubMed

    Insights

    MicroRNA-217 (miR-217) acts as a tumor suppressor in osteosarcoma (OS). Downregulation of miR-217 inhibits cancer cell proliferation and invasion by targeting SET Domain-Containing Protein 8 (SETD8).

    Area of Science:

    • Oncology
    • Molecular Biology
    • Genetics

    Background:

    • MicroRNAs (miRNAs) are crucial in osteosarcoma (OS) progression.
    • The tumor-suppressive role of miR-217 in cancers is known, but its mechanism in OS requires elucidation.

    Purpose of the Study:

    • To investigate the role and mechanism of miR-217 in osteosarcoma (OS).
    • To determine if miR-217 functions as a tumor suppressor in OS and identify its target.

    Main Methods:

    • Bioinformatic analysis to identify miR-217 targets.
    • In vitro experiments to assess the effect of miR-217 on OS cell proliferation and invasion.
    • Correlation analysis between miR-217 and SETD8 expression in OS tissues.

    Main Results:

    • miR-217 was found to be downregulated in OS tissues, correlating with poor patient survival.
    • Reduced miR-217 expression inhibited OS cell proliferation and invasion in vitro.
    • miR-217 directly targets SET Domain-Containing Protein 8 (SETD8), with an inverse correlation observed in OS tissues.
    • miR-217 counteracted the proliferative and invasive effects stimulated by SETD8.

    Conclusions:

    • miR-217 functions as a tumor suppressor in osteosarcoma (OS).
    • The tumor-suppressive function of miR-217 in OS is mediated through its interaction with SETD8.

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