Cell ProliferationCell DivisionCells, CulturedSignal TransductionCell Line, TumorCell DifferentiationApoptosisCell CycleBromodeoxyuridineRNA, MessengerCell MovementCell SurvivalImmunohistochemistryCell LineBlotting, WesternMice, Inbred C57BLProliferating Cell Nuclear AntigenLymphocyte ActivationPhosphorylationStem CellsReverse Transcriptase Polymerase Chain ReactionKi-67 AntigenRNA, Small InterferingTumor Cells, CulturedGene Expression Regulation, NeoplasticDown-RegulationCell Growth ProcessesGene Expression RegulationMice, KnockoutEpithelial CellsFlow CytometryMice, TransgenicDose-Response Relationship, DrugTransfectionTime FactorsT-LymphocytesCyclin D1ThymidineRNA InterferenceMice, NudeMolecular Sequence DataFibroblastsCell LineageCell CountGene ExpressionUp-RegulationProto-Oncogene Proteins c-aktTranscription FactorsMuscle, Smooth, VascularCyclin-Dependent Kinase Inhibitor p27Mice, Inbred BALB CDNA-Binding ProteinsCell Transformation, NeoplasticModels, BiologicalEnzyme ActivationCell Cycle ProteinsMutationDNAPhenotypeProto-Oncogene ProteinsHyperplasiaBase SequenceEnzyme InhibitorsGene Knockdown TechniquesGrowth InhibitorsRats, Sprague-DawleyExtracellular Signal-Regulated MAP KinasesMyocytes, Smooth MuscleProto-Oncogene Proteins c-mycMitogensCyclin-Dependent Kinase Inhibitor p21Protein-Serine-Threonine KinasesNuclear ProteinsMAP Kinase Signaling SystemAntineoplastic AgentsGene Expression Regulation, DevelopmentalG1 PhaseMitogen-Activated Protein Kinase 3Transforming Growth Factor betaBreast NeoplasmsDisease Models, AnimalMitosisTrans-ActivatorsMitogen-Activated Protein Kinase 1Cell AdhesionFibroblast Growth Factor 2Gene Expression ProfilingTumor Suppressor ProteinsGrowth Substancesbeta CateninPlatelet-Derived Growth FactorRecombinant ProteinsTumor Suppressor Protein p53Phosphatidylinositol 3-KinasesIn Situ HybridizationAmino Acid SequenceS PhaseInterleukin-2Transcription, GeneticMitogen-Activated Protein Kinases