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  • Title: miR-376a inhibits the proliferation and invasion of osteosarcoma by targeting FBXO11.
    Author: Xu Q, Cheng L, Chen J, Lu W, Wang P.
    Journal: Hum Cell; 2019 Jul; 32(3):390-396. PubMed ID: 31079326.
    Abstract:
    Dysregulation of microRNAs (miRNAs) is frequently found in the tumorigenesis of osteosarcoma (OS). miR-376a was found to play tumor suppressive roles in human cancers. However, the role of miR-376a in OS remains unclear. The expression of miR-376a was analyzed by quantitative real-time PCR (qRT-PCR) in OS cell lines. Cell proliferation assay, cell invasion assay, and cell apoptosis assay were performed to detect the biological function of miR-376a after synthetic miRNA transfection. The target of miR-376a was predicted by TargetScan and miRDB, and further validated by luciferase activity reporter assay and western blot. miR-376a expression was revealed to be decreased in OS cell lines. In vitro experiments showed that overexpression of miR-376a inhibits OS cell proliferation and invasion but promotes apoptosis. Luciferase activity reporter assay and western blot assay showed F-box protein 11 (FBXO11) was a direct target of miR-376a. Furthermore, FBXO11 mediated the role of miR-376a on the proliferation, invasion, and apoptosis of OS cells. Collectively, these results revealed miR-376a functions as a tumor suppressor by targeting FBXO11 in OS. It may be developed as a therapeutic target for OS patients.
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