GlioblastomaBrain NeoplasmsDacarbazineGliomaCell Line, TumorAstrocytomaAntineoplastic Agents, AlkylatingDNA Modification MethylasesNeoplastic Stem CellsMice, NudeGene Expression Regulation, NeoplasticTumor Cells, CulturedXenograft Model Antitumor AssaysCell ProliferationNeoplasm InvasivenessSupratentorial NeoplasmsCentral Nervous System NeoplasmsTransplantation, HeterologousApoptosisNeoplasm TransplantationKarnofsky Performance StatusDNA Repair EnzymesAntineoplastic AgentsReceptor, Epidermal Growth FactorPTEN PhosphohydrolaseCombined Modality TherapyNimustineGliosarcomaSignal TransductionCell MovementNeovascularization, PathologicOligodendrogliomaNeoplasm Recurrence, LocalRNA, Small InterferingSpheroids, CellularRats, NudeIsocitrate DehydrogenaseBlotting, WesternTumor Suppressor ProteinsCarmustineImmunohistochemistryMagnetic Resonance ImagingO(6)-Methylguanine-DNA MethyltransferasePrognosisCell SurvivalGene Expression ProfilingMice, SCIDGene Knockdown TechniquesAngiogenesis InhibitorsInterleukin-13 Receptor alpha2 SubunitReverse Transcriptase Polymerase Chain ReactionKaplan-Meier EstimateGenes, erbB-1Tumor Markers, BiologicalAstrocytesSurvival AnalysisRadiation ToleranceDrug Resistance, NeoplasmCell Growth ProcessesRadiation-Sensitizing AgentsRNA, Messenger