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- W2102002182 abstract "Recent studies have revealed that miR-196a is upregulated in glioblastoma multiforme (GBM) and that it correlates with the clinical outcome of patients with GBM. However, its potential regulatory mechanisms in GBM have never been reported. We used quantitative real-time PCR to assess miR-196a expression levels in 132 GBM specimens in a single institution. Oncogenic capability of miR-196a was detected by apoptosis and proliferation assays in U87MG and T98G cells. Immunohistochemistry was used to determine the expression of IκBα in GBM tissues, and a luciferase reporter assay was carried out to confirm whether IκBα is a direct target of miR-196a. In vivo, xenograft tumors were examined for an antiglioma effect of miR-196a inhibitors. We present for the first time evidence that miR-196a could directly interact with IκBα 3′-UTR to suppress IκBα expression and subsequently promote activation of NF-κB, consequently promoting proliferation of and suppressing apoptosis in GBM cells both in vitro and in vivo. Our study confirmed that miR-196a was upregulated in GBM specimens and that high levels of miR-196a were significantly correlated with poor outcome in a large cohort of GBM patients. Our data from human tumor xenografts in nude mice treated with miR-196 inhibitors demonstrated that inhibition of miR-196a could ameliorate tumor growth in vivo. MiR-196a exerts its oncogenic effect in GBM by inhibiting IκBα both in vitro and in vivo. Our findings provide new insights into the pathogenesis of GBM and indicate that miR-196a may predict clinical outcome of GBM patients and serve as a new therapeutic target for GBM." @default.
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- W2102002182 date "2014-01-23" @default.
- W2102002182 modified "2023-09-22" @default.
- W2102002182 title "MiR-196a exerts its oncogenic effect in glioblastoma multiforme by inhibition of IκBα both in vitro and in vivo" @default.
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- W2102002182 doi "https://doi.org/10.1093/neuonc/not307" @default.
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