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  • Title: miR-140-5p suppresses BMP2-mediated osteogenesis in undifferentiated human mesenchymal stem cells.
    Author: Hwang S, Park SK, Lee HY, Kim SW, Lee JS, Choi EK, You D, Kim CS, Suh N.
    Journal: FEBS Lett; 2014 Aug 25; 588(17):2957-63. PubMed ID: 24928442.
    Abstract:
    Human mesenchymal stem cells (hMSCs) have self-renewal and differentiation capabilities but the regulatory mechanisms of MSC fate determination remain poorly understood. Here, we aimed to identify microRNAs enriched in hMSCs that modulate differentiation commitments. Microarray analysis revealed that miR-140-5p is commonly enriched in undifferentiated hMSCs from various tissue sources. Moreover, bioinformatic analysis and luciferase reporter assay validated that miR-140-5p directly represses bone morphogenic protein 2 (BMP2). Furthermore, blocking miR-140-5p in hMSCs increased the expression of BMP signaling components and critical regulators of osteogenic differentiation. We propose that miR-140-5p functionally inhibits osteogenic lineage commitment in undifferentiated hMSCs.
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