Brain NeoplasmsMedulloblastomaEpendymomaCerebellar NeoplasmsBrain Stem NeoplasmsTumor Suppressor Protein p53AstrocytomaGliomaTumor Suppressor ProteinsGenes, Tumor SuppressorNeuroectodermal Tumors, PrimitiveInfratentorial NeoplasmsNeuronavigationGlioblastomaCraniopharyngiomaVon Hippel-Lindau Tumor Suppressor ProteinMagnetic Resonance ImagingCell Line, TumorTumor Markers, BiologicalTumor Suppressor Protein p14ARFCentral Nervous System NeoplasmsRetinoblastoma ProteinTumor Cells, CulturedSurvivorsAntineoplastic AgentsPediatricsProto-Oncogene Proteins c-mdm2Brain InjuriesMagnetic Resonance SpectroscopyMaximum Tolerated DoseBrain ChemistryBrainMutationMolecular Sequence DataGene Expression Regulation, NeoplasticGenes, p53ApoptosisCell LineTransfectionMeningiomaProtein BindingCell ProliferationNuclear ProteinsReproducibility of ResultsInfant, NewbornDNA-Binding ProteinsSignal TransductionTranscription FactorsCell CycleTumor BurdenNeurofibromin 2Cell Transformation, NeoplasticBase SequenceRNA, MessengerSurvival AnalysisTumor Necrosis Factor-alphaAdenomatous Polyposis Coli ProteinAmino Acid SequenceNeoplasmsPTEN PhosphohydrolaseNeoplasm ProteinsCell DivisionCyclin-Dependent Kinase Inhibitor p16Proto-Oncogene ProteinsPromoter Regions, GeneticBlotting, WesternUbiquitin-Protein LigasesPhosphorylationCyclin-Dependent Kinase Inhibitor p21ImmunohistochemistryCell Cycle ProteinsTreatment OutcomeGenes, SuppressorNeoplasms, ExperimentalGliosarcomaBrain MappingWilms TumorTranscription, GeneticDown-RegulationDNA DamageMice, NudeProteinsRepressor ProteinsCells, CulturedReverse Transcriptase Polymerase Chain ReactionMice, Inbred C57BLMeningeal NeoplasmsCyclinsKidney NeoplasmsTime FactorsLigasesTranscriptional ActivationE2F Transcription FactorsProtein Structure, TertiaryTransplantation, HeterologousCarrier ProteinsLoss of HeterozygosityGene SilencingRNA, Small InterferingGene Expression Regulation