Cell AgingCyclin-Dependent Kinase Inhibitor p16TelomereFibroblastsTumor Suppressor Protein p53Aging, PrematureTelomere ShorteningCyclin-Dependent Kinase Inhibitor p21Telomerasebeta-GalactosidaseAgingDNA DamageCells, CulturedCell ProliferationRetinoblastoma ProteinCell Cycle CheckpointsCell CycleCell Line, TumorOxidative StressCell Transformation, NeoplasticSignal TransductionTumor Suppressor Protein p14ARFCell LineTumor Suppressor ProteinsSirtuin 1ProgeriaLongevityTelomeric Repeat Binding Protein 2NeoplasmsNuclear ProteinsRNA, Small InterferingGenes, p16Reactive Oxygen SpeciesDiploidyPhenotypeGene Expression RegulationRNA InterferenceApoptosisHeterochromatinDown-RegulationModels, BiologicalWerner SyndromeHydrogen PeroxideDNA-Binding ProteinsGene Knockdown TechniquesCell Divisionras ProteinsPlant LeavesRepressor ProteinsTranscription FactorsOxidantsOncogenesUp-RegulationForeskinNevus, PigmentedCell Cycle ProteinsBlotting, WesternMutationMice, KnockoutGene SilencingHCT116 CellsTOR Serine-Threonine KinasesGenes, rasHistonesCyclin-Dependent Kinase Inhibitor p15Polycomb Repressive Complex 1Proto-Oncogene Proteins c-mycCell Line, TransformedInhibitor of Differentiation Protein 1Gene Expression Regulation, NeoplasticReverse Transcriptase Polymerase Chain ReactionSirtuinsRadiationToyocamycinGenomic InstabilityJumonji Domain-Containing Histone DemethylasesTelomere HomeostasisGenes, p53Cyclin-Dependent Kinase Inhibitor p27MicroRNAsIsopropyl ThiogalactosideIntranuclear Inclusion BodiesRNA, MessengerEmbryo, MammalianProtein-Serine-Threonine KinasesPromoter Regions, GeneticMice, Inbred C57BLCell ShapeEndothelial CellsAntigens, NuclearTranscription, GeneticTransfectionTime FactorsCyclin-Dependent Kinase 6Epithelial CellsBiological MarkersProto-Oncogene Proteins c-mdm2Papillomavirus E7 ProteinsMolecular Sequence DataPhosphorylation