Cell CycleCell Line, TumorCell ProliferationApoptosisCell Cycle ProteinsTumor Cells, CulturedCell DivisionSignal TransductionCells, CulturedCell SurvivalCell Cycle CheckpointsCell LineEndoreduplicationTumor Suppressor Protein p53Flow CytometryRNA, MessengerCell DifferentiationMitosisPhosphorylationAntineoplastic AgentsCaspasesApoptosis Regulatory ProteinsTransfectionImmunohistochemistryTime FactorsCaspase 3Molecular Sequence DataProto-Oncogene Proteins c-bcl-2Tumor Necrosis Factor-alphaBlotting, WesternMice, Inbred C57BLG1 Phase Cell Cycle CheckpointsDown-RegulationG1 PhaseTumor Markers, BiologicalModels, BiologicalCell MovementDNA-Binding ProteinsTumor Suppressor ProteinsGene Expression Regulation, NeoplasticInhibitor of Apoptosis ProteinsGene Expression RegulationNeoplasmsTranscription FactorsTumor BurdenReverse Transcriptase Polymerase Chain ReactionNeoplasms, ExperimentalFibroblastsMice, NudeGene ExpressionRNA, Small InterferingCyclinsS PhaseNeoplasm ProteinsIn Situ Nick-End LabelingAmino Acid SequenceDose-Response Relationship, DrugCyclin-Dependent Kinase Inhibitor p21Enzyme ActivationProto-Oncogene ProteinsMice, Inbred BALB CMutationProtein-Serine-Threonine KinasesDNA FragmentationTranscription, GeneticXenograft Model Antitumor Assaysbcl-2-Associated X ProteinUp-RegulationBreast NeoplasmsEnzyme InhibitorsCyclin-Dependent Kinase Inhibitor p27Cell Transformation, NeoplasticNeoplasm TransplantationGenes, Tumor SuppressorBase SequenceRetinoblastoma ProteinColonic NeoplasmsCell AdhesionG2 PhaseDNA DamageNeovascularization, PathologicNeoplasm MetastasisTransplantation, HeterologousCyclin D1AdenocarcinomaMice, KnockoutRNA InterferenceMice, TransgenicMammary Neoplasms, ExperimentalCell NucleusBrain NeoplasmsHeLa CellsCell Growth ProcessesBromodeoxyuridineGene Expression ProfilingDNACell DeathNuclear ProteinsMitochondriaKi-67 Antigen