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  • Title: DICER governs characteristics of glioma stem cells and the resulting tumors in xenograft mouse models of glioblastoma.
    Author: Mansouri S, Singh S, Alamsahebpour A, Burrell K, Li M, Karabork M, Ekinci C, Koch E, Solaroglu I, Chang JT, Wouters B, Aldape K, Zadeh G.
    Journal: Oncotarget; 2016 Aug 30; 7(35):56431-56446. PubMed ID: 27421140.
    Abstract:
    The RNAse III endonuclease DICER is a key regulator of microRNA (miRNA) biogenesis and is frequently decreased in a variety of malignancies. We characterized the role of DICER in glioblastoma (GB), specifically demonstrating its effects on the ability of glioma stem-like cells (GSCs) to form tumors in a mouse model of GB. DICER silencing in GSCs reduced their stem cell characteristics, while tumors arising from these cells were more aggressive, larger in volume, and displayed a higher proliferation index and lineage differentiation. The resulting tumors, however, were more sensitive to radiation treatment. Our results demonstrate that DICER silencing enhances the tumorigenic potential of GSCs, providing a platform for analysis of specific relevant miRNAs and development of potentially novel therapies against GB.
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