Search results for " STEM CELLS"

showing 10 items of 881 documents

Conditioned Medium from Human Amnion-Derived Mesenchymal Stromal/Stem Cells Attenuating the Effects of Cold Ischemia-Reperfusion Injury in an In Vitr…

2021

The clinical results of lung transplantation (LTx) are still less favorable than other solid organ transplants in both the early and long term. The fragility of the lungs limits the procurement rate and can favor the occurrence of ischemia-reperfusion injury (IRI). Ex vivo lung perfusion (EVLP) with Steen SolutionTM (SS) aims to address problems, and the implementation of EVLP to alleviate the activation of IRI-mediated processes has been achieved using mesenchymal stromal/stem cell (MSC)-based treatments. In this study, we investigated the paracrine effects of human amnion-derived MSCs (hAMSCs) in an in vitro model of lung IRI that includes cold ischemia and normothermic EVLP. We found tha…

0301 basic medicinemedicine.medical_treatmentApoptosislcsh:Chemistry0302 clinical medicinelcsh:QH301-705.5Cells CulturedSpectroscopyamnion-derived mesenchymal stem cellsCell CycleCold IschemiaNF-kappa BCell DifferentiationGeneral MedicineComputer Science Applicationsconditioned mediummedicine.anatomical_structureReperfusion Injury030220 oncology & carcinogenesisCytokinesStem cellStromal cellCell Survivalex vivo lung perfusionArticleCatalysisInorganic Chemistry03 medical and health sciencesParacrine signallingDownregulation and upregulationmedicineHumansLung transplantationAmnionlung ischemia-reperfusion injuryPhysical and Theoretical ChemistryMolecular BiologyLungbusiness.industryOrganic ChemistryMesenchymal stem cellMesenchymal Stem Cellsmedicine.disease030104 developmental biologyGene Expression Regulationlcsh:Biology (General)lcsh:QD1-999A549 CellsAlveolar Epithelial CellsCulture Media ConditionedCancer researchbusinessReperfusion injuryInternational Journal of Molecular Sciences
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CHK1-targeted therapy to deplete DNA replication-stressed, p53-deficient, hyperdiploid colorectal cancer stem cells.

2017

ObjectiveCancer stem cells (CSCs) are responsible for tumour formation and spreading, and their targeting is required for tumour eradication. There are limited therapeutic options for advanced colorectal cancer (CRC), particularly for tumours carrying RAS-activating mutations. The aim of this study was to identify novel CSC-targeting strategies.DesignTo discover potential therapeutics to be clinically investigated as single agent, we performed a screening with a panel of FDA-approved or investigational drugs on primary CRC cells enriched for CSCs (CRC-SCs) isolated from 27 patients. Candidate predictive biomarkers of efficacy were identified by integrating genomic, reverse-phase protein mic…

0301 basic medicinep53DNA ReplicationCELL CYCLE CONTROLDNA damageColorectal cancerColonmedicine.medical_treatmentAntineoplastic AgentsBiologyBioinformaticsmedicine.disease_causeDNA DAMAGETargeted therapy03 medical and health sciencesCancer stem cellCell Line TumormedicineHumansCHEK11506DRUG DEVELOPMENTOligonucleotide Array Sequence AnalysisMutationCOLORECTAL CANCERSettore MED/06 - ONCOLOGIA MEDICAGastroenterologyCHEMOTHERAPYmedicine.diseaseImmunohistochemistryPrexasertib030104 developmental biologyPyrazinesCheckpoint Kinase 1MutationCancer researchNeoplastic Stem CellsPyrazolesStem cellTumor Suppressor Protein p53Colorectal NeoplasmsGut
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Continuous Electrical Stimulation Affects Initial Growth and Proliferation of Adipose-Derived Stem Cells

2020

The aim of the study was to establish electrical stimulation parameters in order to improve cell growth and viability of human adipose-derived stem cells (hADSC) when compared to non-stimulated cells in vitro. hADSC were exposed to continuous electrical stimulation with 1.7 V AC/20 Hz. After 24, 72 h and 7 days, cell number, cellular surface coverage and cell proliferation were assessed. In addition, cell cycle analysis was carried out after 3 and 7 days. After 24 h, no significant alterations were observed for stimulated cells. At day 3, stimulated cells showed a 4.5-fold increase in cell numbers, a 2.7-fold increase in cellular surface coverage and a significantly increased proliferation.…

0301 basic medicineproliferationMedicine (miscellaneous)Adipose tissueStimulationGeneral Biochemistry Genetics and Molecular BiologyArticle03 medical and health sciences0302 clinical medicineTissue engineeringelectrical stimulationlcsh:QH301-705.5continuous stimulationChemistryCell growth030206 dentistryIn vitroCell biologyCell cycle analysis030104 developmental biologylcsh:Biology (General)Apoptosistissue engineeringhuman adipose-derived stem cellsStem cellalternating currentBiomedicines
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Modulating Neuronal Competition Dynamics in the Dentate Gyrus to Rejuvenate Aging Memory Circuits.

2015

The neural circuit mechanisms underlying the integration and functions of adult-born dentate granule cell (DGCs) are poorly understood. Adult-born DGCs are thought to compete with mature DGCs for inputs to integrate. Transient genetic overexpression of a negative regulator of dendritic spines, Kruppel-like factor 9 (Klf9), in mature DGCs enhanced integration of adult-born DGCs and increased NSC activation. Reversal of Klf9 overexpression in mature DGCs restored spines and activity and reset neuronal competition dynamics and NSC activation, leaving the DG modified by a functionally integrated, expanded cohort of age-matched adult-born DGCs. Spine elimination by inducible deletion of Rac1 in …

0301 basic medicinerac1 GTP-Binding ProteinAgingDendritic spineCell SurvivalDendritic SpinesNeurogenesisKruppel-Like Transcription FactorsRAC1BiologyNegative regulator03 medical and health sciencesMice0302 clinical medicineDownregulation and upregulationNeural Stem CellsMemorymedicineAnimalsCell ProliferationNeuronsMemory circuitsGeneral NeuroscienceDentate gyrusNeuropeptidesGranule cellUp-RegulationKLF9Adult Stem Cells030104 developmental biologymedicine.anatomical_structureDentate GyrusMutationNeuroscience030217 neurology & neurosurgeryNeuron
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STRIPAK Members Orchestrate Hippo and Insulin Receptor Signaling to Promote Neural Stem Cell Reactivation

2019

Summary Adult stem cells reactivate from quiescence to maintain tissue homeostasis and in response to injury. How the underlying regulatory signals are integrated is largely unknown. Drosophila neural stem cells (NSCs) also leave quiescence to generate adult neurons and glia, a process that is dependent on Hippo signaling inhibition and activation of the insulin-like receptor (InR)/PI3K/Akt cascade. We performed a transcriptome analysis of individual quiescent and reactivating NSCs harvested directly from Drosophila brains and identified the conserved STRIPAK complex members mob4, cka, and PP2A (microtubule star, mts). We show that PP2A/Mts phosphatase, with its regulatory subunit Widerbors…

0301 basic medicinereactivationendocrine systemMitosisNerve Tissue ProteinsProtein Serine-Threonine KinasesBiologyArticleGeneral Biochemistry Genetics and Molecular BiologyAnimals Genetically ModifiedPhosphatidylinositol 3-Kinases03 medical and health sciences0302 clinical medicineNeural Stem CellsAnimalsDrosophila ProteinsquiescenceProtein Phosphatase 2lcsh:QH301-705.5Protein kinase BCells CulturedPI3K/AKT/mTOR pathwayTissue homeostasisAdaptor Proteins Signal TransducingCell ProliferationHippo signaling pathwayGene Expression ProfilingHippo signalingInR/PI3K/Akt signalingfungiIntracellular Signaling Peptides and ProteinsBrainSTRIPAK membersProtein phosphatase 2Receptor InsulinNeural stem cellCell biologyDrosophila melanogaster030104 developmental biologylcsh:Biology (General)nervous systemHippo signalingSingle-Cell AnalysisTranscriptomeProto-Oncogene Proteins c-akt030217 neurology & neurosurgeryAdult stem cellCell Reports
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Spray dried hyaluronic acid microparticles for adhesion controlled aggregation and potential stimulation of stem cells

2017

Spray-dried microparticles of a derivative of hyaluronic acid (HA) have been engineered to obtain a controlled aggregation with Human Mesenchymal Stem Cells (hMSCs) into 3D constructs. We demonstrated the utility of chemical functionalization of a native constituent of the extracellular matrix to improve processing performances and to control on stem cell adhesion and differentiation. Native hyaluronic acid (HA), cell adhesive peptides (RGD), transforming growth factor β3, dexamethasone are biological agents potentially suitable for chondrogenic stimulation of hMSCS. However unmodified HA suffers of drawbacks in terms of stability and versatility of processing. Functionalization strategies…

3003Hyaluronic acid0206 medical engineeringPharmaceutical Science02 engineering and technologyDexamethasoneExtracellular matrixchemistry.chemical_compoundTissue engineeringTransforming Growth Factor betaHyaluronic acidCell AdhesionHumansCell adhesionCells CulturedBottom-up approachStem cellMesenchymal Stromal CellTissue EngineeringChemistryMesenchymal stem cellMesenchymal Stem CellsCell DifferentiationAdhesion021001 nanoscience & nanotechnology020601 biomedical engineeringExtracellular MatrixBiochemistryMicroparticleSettore CHIM/09 - Farmaceutico Tecnologico ApplicativoSurface modificationChondrogenesiStem cell0210 nano-technologyChondrogenesisHuman
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Pharmacological activation of CB2 receptors counteracts the deleterious effect of ethanol on cell proliferation in the main neurogenic zones of the a…

2015

Chronic alcohol exposure reduces endocannabinoid activity and disrupts adult neurogenesis in rodents, which results in structural and functional alterations. Cannabinoid receptor agonists promote adult neural progenitor cell (NPC) proliferation. We evaluated the protective effects of the selective CB1 receptor agonist ACEA, the selective CB2 receptor agonist JWH133 and the fatty-acid amide-hydrolase (FAAH) inhibitor URB597, which enhances endocannabinoid receptor activity, on NPC proliferation in rats with forced consumption of ethanol (10%) or sucrose liquid diets for 2 weeks. We performed immunohistochemical and stereological analyses of cells expressing the mitotic phosphorylation of his…

:Phenomena and Processes::Physiological Phenomena::Physiological Processes::Growth and Development::Morphogenesis::Embryonic and Fetal Development::Organogenesis::Neurogenesis [Medical Subject Headings]CB1 receptorTubulina (proteína)Cannabinoid receptorCarbamatosEtanol:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Nuclear Proteins::Histones [Medical Subject Headings]Ventrículos lateralesSacarosaNeuronasSubgranular zone0302 clinical medicine:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Membrane Proteins::Receptors Cell Surface::Receptors G-Protein-Coupled::Receptors Cannabinoid::Receptor Cannabinoid CB1 [Medical Subject Headings]Histonas:Chemicals and Drugs::Organic Chemicals::Carboxylic Acids::Acids Acyclic::Carbamates [Medical Subject Headings]Receptor cannabinoide CB1Cannabinoid receptor type 2:Organisms::Eukaryota::Animals [Medical Subject Headings]:Phenomena and Processes::Metabolic Phenomena::Metabolism::Phosphorylation [Medical Subject Headings]:Anatomy::Cells::Stem Cells::Neural Stem Cells [Medical Subject Headings]:Anatomy::Nervous System::Neurons [Medical Subject Headings]health care economics and organizations:Anatomy::Nervous System::Central Nervous System::Brain::Cerebral Ventricles::Lateral Ventricles [Medical Subject Headings]Original Research:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleosides::Deoxyribonucleosides::Deoxyuridine::Bromodeoxyuridine [Medical Subject Headings]0303 health sciencesAlcoholismoalcoholConsumo de alcoholNeurogenesis:Phenomena and Processes::Genetic Phenomena::Phenotype::Genetic Markers [Medical Subject Headings]:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Molecular Mechanisms of Pharmacological Action::Neurotransmitter Agents::Cannabinoid Receptor Modulators::Cannabinoid Receptor Agonists [Medical Subject Headings]Benzamidas:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Membrane Proteins::Receptors Cell Surface::Receptors G-Protein-Coupled::Receptors Cannabinoid::Receptor Cannabinoid CB2 [Medical Subject Headings]Endocannabinoid system3. Good healthbromodesoxiuridinaneurogenesisEndocannabinoidesmedicine.anatomical_structure:Chemicals and Drugs::Enzymes and Coenzymes::Enzymes::Hydrolases [Medical Subject Headings]ACEADietaAlcoholFosforilaciónAgonistmedicine.medical_specialtyHidrolasasmedicine.drug_classNeurogenesiseducation:Psychiatry and Psychology::Mental Disorders::Substance-Related Disorders::Alcohol-Related Disorders::Alcoholism [Medical Subject Headings]Subventricular zoneBiology:Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Diet [Medical Subject Headings]:Anatomy::Nervous System::Central Nervous System::Brain::Prosencephalon::Telencephalon::Cerebrum::Cerebral Cortex::Hippocampus::Dentate Gyrus [Medical Subject Headings]lcsh:RC321-57103 medical and health sciencesCellular and Molecular NeuroscienceRatasInternal medicine:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Nerve Tissue Proteins::Tubulin [Medical Subject Headings]JWH133medicineGiro dentadolcsh:Neurosciences. Biological psychiatry. Neuropsychiatry030304 developmental biologyCélulas madre nerviosas:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Molecular Mechanisms of Pharmacological Action::Neurotransmitter Agents::Endocannabinoids [Medical Subject Headings]Dentate gyrusmarcadores genéticosCB2 receptor:Chemicals and Drugs::Carbohydrates::Polysaccharides::Oligosaccharides::Disaccharides::Sucrose [Medical Subject Headings]:Anatomy::Nervous System::Central Nervous System::Brain::Prosencephalon::Diencephalon::Hypothalamus [Medical Subject Headings]:Chemicals and Drugs::Organic Chemicals::Alcohols::Ethanol [Medical Subject Headings]Endocrinology:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Rodentia::Muridae::Murinae::Rats [Medical Subject Headings]nervous system:Psychiatry and Psychology::Behavior and Behavior Mechanisms::Behavior::Drinking Behavior::Alcohol Drinking [Medical Subject Headings]:Chemicals and Drugs::Organic Chemicals::Amides::Benzamides [Medical Subject Headings]030217 neurology & neurosurgeryHipotálamoNeuroscience
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Identification and expansion of human colon-cancer-initiating cells

2007

Colon carcinoma is the second most common cause of death from cancer. The isolation and characterization of tumorigenic colon cancer cells may help to devise novel diagnostic and therapeutic procedures. Although there is increasing evidence that a rare population of undifferentiated cells is responsible for tumour formation and maintenance, this has not been explored for colorectal cancer. Here, we show that tumorigenic cells in colon cancer are included in the high-density CD133+ population, which accounts for about 2.5% of the tumour cells. Subcutaneous injection of colon cancer CD133+ cells readily reproduced the original tumour in immunodeficient mice, whereas CD133- cells did not form …

AC133 Antigen; Animals; Antigens CD; Cell Differentiation; Cell Line Tumor; Cell Proliferation; Colonic Neoplasms; Glycoproteins; Humans; Mice; Mice SCID; Neoplasm Transplantation; Neoplastic Stem Cells; Peptides; Phenotype; Transplantation Heterologous; MultidisciplinaryColorectal cancerCellular differentiationPopulationTransplantation HeterologousTumor initiationMice SCIDBiologyColon carcinomasmedicine.disease_causeSCIDCell LineMiceSide populationCancer stem cellAntigens CDSettore MED/04 - PATOLOGIA GENERALECell Line TumormedicineAnimalsHumansAC133 AntigenAntigenseducationCell ProliferationGlycoproteinseducation.field_of_studyTransplantationHeterologousTumorMultidisciplinaryCancerCell Differentiationmedicine.diseaseCDPhenotypeImmunologyColonic NeoplasmsCancer researchNeoplastic Stem CellsCarcinogenesisPeptidesNeoplasm Transplantation
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ADHESION AND OSTEOGENIC DIFFERENTIATION OF NON-ADHERENT PROGENITORS FROM ADIPOSE-DERIVED STEM CELLS (napASCs) OVER INTEGRA DERMAL REGENERATION TEMPLA…

2012

INTRODUCTION: Non-adherent progenitors from adipose-derived stem cells (n.a.p.ASCs) represent an upstream lineage of multipotent stem cell progenitors capable of clonal expansion and asymmetric divisions comparable to stem cell spheres observed in breast, thyroid and colon, and, as such, confirm the stemness of cells extracted from lipoaspirate. The identification of napASCs confirms the stem-cell origin of the more differentiated and commonly used adherent mesenchymal stromal cells (MSCs). NapASCs adhesion for differentiation purposes may be useful in tissue engineering. In this study we investigate the feasibility of napASCs adhesion over Integra® dermal regeneration template for cell col…

ADIPOSE-DERIVED STEM CELLS
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Chapter 6 Colon

2009

Abstract The aim of this chapter is to show the key features of adult colon stem cells and provide a useful tool for their isolation, characterization and propagation.

Abstract The aim of this chapter is to show the key features of adult colon stem cells and provide a useful tool for their isolation characterization and propagation.
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