Cell CycleCell ProliferationCell DifferentiationCell Line, TumorCell DivisionCell Cycle ProteinsTumor Cells, CulturedCells, CulturedSignal TransductionApoptosisCell LineRNA, MessengerCell SurvivalImmunohistochemistryTranscription FactorsCell Cycle CheckpointsReverse Transcriptase Polymerase Chain ReactionFlow CytometryMolecular Sequence DataMice, Inbred C57BLBlotting, WesternTumor Suppressor Protein p53PhosphorylationGene Expression RegulationG1 PhaseTransfectionGene Expression Regulation, NeoplasticTime FactorsTumor Markers, BiologicalDNA-Binding ProteinsStem CellsTumor Suppressor ProteinsCell MovementDown-RegulationBase SequenceBromodeoxyuridineMitosisRNA, Small InterferingGene ExpressionMice, NudeNeoplasms, ExperimentalNeoplasmsMutationMice, Inbred BALB CCyclinsS PhaseTumor BurdenTumor Necrosis Factor-alphaNeoplasm ProteinsMice, TransgenicAntineoplastic AgentsMice, KnockoutGene Expression Regulation, DevelopmentalCell Transformation, NeoplasticCyclin-Dependent Kinase Inhibitor p27Up-RegulationCyclin-Dependent Kinase Inhibitor p21PhenotypeModels, BiologicalDose-Response Relationship, DrugTranscription, GeneticGene Expression ProfilingCyclin D1FibroblastsRetinoblastoma ProteinProtein-Serine-Threonine KinasesProto-Oncogene ProteinsBreast NeoplasmsNuclear ProteinsEpithelial CellsRNA InterferenceCell Growth ProcessesAmino Acid SequenceLymphocyte ActivationDNAPromoter Regions, GeneticProliferating Cell Nuclear AntigenNeoplasm TransplantationKi-67 AntigenNeovascularization, PathologicGenes, Tumor SuppressorTransplantation, HeterologousXenograft Model Antitumor AssaysCell NucleusColonic NeoplasmsT-LymphocytesAdenocarcinomaEnzyme InhibitorsNeoplasm MetastasisProtein BindingEnzyme ActivationMammary Neoplasms, ExperimentalDNA PrimersBrain NeoplasmsAntibodies, MonoclonalG2 PhaseCell AdhesionGene Knockdown TechniquesTrans-ActivatorsRecombinant Proteins