Cell AgingTumor Suppressor Protein p53Cyclin-Dependent Kinase Inhibitor p16Tumor Suppressor ProteinsFibroblastsCell Line, TumorTelomereGenes, Tumor SuppressorCyclin-Dependent Kinase Inhibitor p21DNA DamageCell ProliferationNeoplasmsCell Transformation, NeoplasticAging, PrematureSignal TransductionTelomeraseCells, CulturedCell CycleTelomere ShorteningTumor Suppressor Protein p14ARFbeta-GalactosidaseRetinoblastoma ProteinAgingApoptosisCell LineCell DivisionCell Cycle CheckpointsNuclear ProteinsGene Expression Regulation, NeoplasticMutationRNA, Small InterferingMice, NudeDNA-Binding ProteinsDown-RegulationTumor BurdenTumor Necrosis Factor-alphaTumor Markers, BiologicalNeoplasms, ExperimentalPhenotypeMice, Inbred C57BLTranscription FactorsMice, KnockoutModels, BiologicalGene Expression RegulationRNA InterferenceTransfectionRNA, MessengerGenes, p53Oxidative StressReverse Transcriptase Polymerase Chain ReactionBlotting, WesternGenes, p16Cell Cycle ProteinsNeoplasm ProteinsGene Knockdown TechniquesMolecular Sequence DataGenes, rasGene SilencingProto-Oncogene Proteins c-mdm2Time FactorsPromoter Regions, GeneticBase SequenceLongevityUp-RegulationMice, Transgenicras ProteinsProtein-Serine-Threonine KinasesSirtuin 1Repressor ProteinsTranscription, GeneticMice, Inbred BALB CCell SurvivalSuppression, GeneticPhosphorylationOncogenesReactive Oxygen SpeciesHCT116 CellsProtein BindingProto-Oncogene Proteins c-mycPTEN PhosphohydrolaseImmunohistochemistryWilms TumorGenomic InstabilityTransplantation, HeterologousCyclin-Dependent Kinase Inhibitor p27Ubiquitin-Protein LigasesSkin NeoplasmsGene ExpressionProgeriaCell Line, TransformedMammary Neoplasms, ExperimentalTelomeric Repeat Binding Protein 2DiploidyXenograft Model Antitumor AssaysGene Expression ProfilingAntineoplastic AgentsTOR Serine-Threonine KinasesBrain NeoplasmsProto-Oncogene ProteinsCell Nucleus