Neuronal PlasticityCell Line, TumorNeuronsHippocampusLong-Term PotentiationTumor Cells, CulturedSynapsesBrain-Derived Neurotrophic FactorRats, Sprague-DawleyBrainNerve Tissue ProteinsSynaptic TransmissionSignal TransductionMice, Inbred C57BLTumor Markers, BiologicalTime FactorsReceptors, N-Methyl-D-AspartateImmunohistochemistryCells, CulturedNeoplasms, ExperimentalLearningMemoryTumor BurdenTumor Necrosis Factor-alphaBehavior, AnimalCerebral CortexGAP-43 ProteinDendritic SpinesDendritesRNA, MessengerExcitatory Postsynaptic PotentialsElectric StimulationMice, TransgenicDisease Models, AnimalNeoplasmsGene Expression RegulationMice, KnockoutAnimals, NewbornNeoplasm MetastasisCell ProliferationNeurogenesisAmygdalaTumor Suppressor Protein p53NeuritesNerve NetCell SurvivalMolecular Sequence DataCarcinoma, Ehrlich TumorBlotting, WesternMammary Neoplasms, ExperimentalNeuropeptidesWilms TumorMutationAction PotentialsNeural PathwaysDose-Response Relationship, DrugBrain NeoplasmsPhosphorylationGenes, Tumor SuppressorReceptors, AMPADentate GyrusConditioning, ClassicalCyclic AMP Response Element-Binding ProteinRats, WistarCell DivisionApoptosisNeoplasm TransplantationAnalysis of VarianceMice, NudePC12 CellsCell LineTumor MicroenvironmentNerve Growth FactorsAntigens, NeoplasmNeovascularization, PathologicNeoplastic Cells, CirculatingMice, Inbred BALB CAxonsCalciumTransplantation, HeterologousTumor Suppressor ProteinsCarcinoid TumorAdenocarcinomaMaze LearningCalcium-Calmodulin-Dependent Protein Kinase Type 2TransfectionNeoplasm ProteinsExcitatory Amino Acid AntagonistsFibrosarcomaXenograft Model Antitumor AssaysReceptor, trkBPresynaptic TerminalsElectrophysiologyUp-RegulationProto-Oncogene Proteins c-fosSpinal CordCerebellumCell MovementNeuroendocrine TumorsColonic Neoplasms