Project description:Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with glioma initiating cells (GICs) implicated to be critical for tumor progression and resistance to therapy. The hypoxic tumor microenvironment has been shown to play an important role to maintain the GICs; however, the mechanisms regulating responses of GICs to hypoxia remain poorly understood. We used microarray to to detail the global change of gene expression in GICs cultured under hypoxia compared to normoxia and identified de-regulated genes during hypoxia.
Project description:Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with glioma initiating cells (GICs) implicated to be critical for tumor progression and resistance to therapy. The hypoxic tumor microenvironment has been shown to play an important role to maintain the GICs; however, the mechanisms regulating responses of GICs to hypoxia remain poorly understood. We used microarray to to detail the global change of gene expression in GICs cultured under hypoxia compared to normoxia and identified de-regulated genes during hypoxia. CD133+ D456MG GICs were cultured under 1% O2 or 20% O2 for 12 hours. Then RNA was extracted and gene expression was profiled by microarray.
Project description:Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with glioma initiating cells (GICs) implicated to be critical for tumor progression and resistance to therapy. KDM1B is involved in regulating GICs' responses to hypoxia, since over-expression of KDM1B delays the cell growth under hypoxia while knocking-down of KDM1B in GICs promotes their survival and tumorigenic abilities.
Project description:Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with glioma initiating cells (GICs) implicated to be critical for tumor progression and resistance to therapy. The hypoxic tumor microenvironment has been shown to play an important role to maintain the GICs; however, the mechanisms regulating responses of GICs to hypoxia remain poorly understood.
Project description:To identify a novel miRNA that is aberrantly expressed in GICs, we analyzed differences in miRNA expression between the mouse GICs, NSCL61 and OPCL61, showing characteristic features of cancer stem cell, and their parental cells by miRNA microarrays. neural stem cells, glioma-initiating cells (GICs) from neural stem cells, oligodendrocyte precursor cells, glioma-initiating cells (GICs) from oligodendrocyte precursor cells.
Project description:To identify factors involved in glioma-initiating cells (GICs), we compared gene expression between GIC-like cells and non-GICs. Neural stem cells (NSCs) were transfected with pCMS-EGFP-HRasL61 and pBabe-neo by electroporation and cultured in 0.5 mg/ml neomycin. The GFP-positive stable NSCs (NSCL61s) were purified by flow cytometry. Total RNA was prepared using RNeasy Mini Kit (QIAGEN).
