Cell CycleCell Cycle ProteinsCell Line, TumorCheckpoint Kinase 2S PhaseG1 PhaseDisease ProgressionMitosisCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesCell DivisionDNA DamageTumor Cells, CulturedGenes, cdcCell ProliferationCyclinsM Phase Cell Cycle CheckpointsApoptosisTumor Suppressor Protein p53PhosphorylationRetinoblastoma ProteinSignal TransductionTumor Suppressor ProteinsCyclin-Dependent Kinase Inhibitor p27Cyclin-Dependent KinasesCyclin-Dependent Kinase Inhibitor p21DNA-Binding ProteinsG2 Phase Cell Cycle CheckpointsCell LineProtein KinasesCyclin-Dependent Kinase 2Cyclin D1Nuclear ProteinsMutationCDC2 Protein KinaseDNA ReplicationSpindle ApparatusCyclin ECyclin BFlow CytometryMolecular Sequence Datacdc25 PhosphatasesCyclin ACell SurvivalHeLa CellsRNA, MessengerCells, CulturedGene Expression Regulation, NeoplasticTranscription FactorsCDC2-CDC28 KinasesBlotting, WesternSaccharomyces cerevisiae ProteinsE2F Transcription FactorsNeoplasmsCyclin-Dependent Kinase 4Time FactorsRNA, Small InterferingCyclin B1Ataxia Telangiectasia Mutated ProteinsTransfectionE2F1 Transcription FactorS Phase Cell Cycle CheckpointsTumor Markers, BiologicalAntineoplastic AgentsModels, BiologicalSaccharomyces cerevisiaeG0 PhaseHydroxyureaCell NucleusDown-RegulationAmino Acid SequenceBase SequenceSchizosaccharomycesProtein BindingNeoplasm ProteinsG1 Phase Cell Cycle CheckpointsCell Transformation, NeoplasticKinetochoresGene Expression RegulationFibroblastsNocodazoleSchizosaccharomyces pombe ProteinsNeoplasms, ExperimentalTranscription, GeneticDNA RepairRNA InterferenceReverse Transcriptase Polymerase Chain ReactionProto-Oncogene ProteinsDNACyclin DTumor BurdenCarrier ProteinsBreast NeoplasmsMice, NudeImmunohistochemistryFungal ProteinsGenes, Tumor SuppressorUbiquitin-Protein Ligase ComplexesTumor Necrosis Factor-alpha