Search results for "Self renewal"

showing 3 items of 13 documents

Relevance of Oxygen Concentration in Stem Cell Culture for Regenerative Medicine

2019

The key hallmark of stem cells is their ability to self-renew while keeping a differentiation potential. Intrinsic and extrinsic cell factors may contribute to a decline in these stem cell properties, and this is of the most importance when culturing them. One of these factors is oxygen concentration, which has been closely linked to the maintenance of stemness. The widely used environmental 21% O2 concentration represents a hyperoxic non-physiological condition, which can impair stem cell behaviour by many mechanisms. The goal of this review is to understand these mechanisms underlying the oxygen signalling pathways and their negatively-associated consequences. This may provide a rationale…

Senescencephysiological oxygen concentrationsenescencemedicine.medical_treatmentphysioxiaCellCell Culture TechniquesReviewBiologyRegenerative MedicineStem cell cultureRegenerative medicineCatalysisenvironmental oxygen concentrationlcsh:ChemistryInorganic ChemistryTissue engineeringmedicineAnimalsHumansCell Self RenewalPhysical and Theoretical Chemistrylcsh:QH301-705.5Molecular BiologyCellular SenescenceSpectroscopyTissue EngineeringStem CellsagingOrganic ChemistryCell DifferentiationGeneral MedicineStem-cell therapyComputer Science ApplicationsCell biologyOxygenmedicine.anatomical_structurelcsh:Biology (General)lcsh:QD1-999redoxLimiting oxygen concentrationStem cellOxidation-ReductionSignal TransductionInternational Journal of Molecular Sciences
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Let-7d miRNA Shows Both Antioncogenic and Oncogenic Functions in Osteosarcoma-Derived 3AB-OS Cancer Stem Cells

2015

Osteosarcoma (OS), an aggressive highly invasive and metastatic bone-malignancy, shows therapy resistance and recurrence, two features that likely depend on cancer stem cells (CSCs), which hold both self-renewing and malignant potential. So, effective anticancer therapies against OS should specifically target and destroy CSCs. We previously found that the let-7d microRNA was downregulated in the 3AB-OS-CSCs, derived from the human OS-MG63 cells. Here, we aimed to assess whether let-7d modulation affected tumorigenic and stemness properties of these OS-CSCs. We found that let-7d-overexpression reduced cell proliferation by decreasing CCND2 and E2F2 cell-cycle-activators and increasing p21 an…

Time FactorsEpithelial-Mesenchymal TransitionTime FactorTranscription FactorPhysiologyClinical BiochemistryDrug ResistanceAntineoplastic AgentsApoptosisBone NeoplasmsCell Cycle ProteinsBone NeoplasmTransfectionCell LineAntineoplastic AgentCell MovementCell Line TumorCell Cycle ProteinHumansNeoplasm InvasivenessCell Self RenewalAntineoplastic Agents; Apoptosis; Apoptosis Regulatory Proteins; Bone Neoplasms; Cell Cycle; Cell Cycle Proteins; Cell Line Tumor; Cell Movement; Cell Self Renewal; Drug Resistance Neoplasm; Epithelial-Mesenchymal Transition; Gene Expression Regulation Neoplastic; Humans; MicroRNAs; Neoplasm Invasiveness; Neoplastic Stem Cells; Osteosarcoma; Phenotype; Signal Transduction; Time Factors; Transcription Factors; Transfection; Physiology; Medicine (all); Clinical Biochemistry; Cell BiologyNeoplasm InvasiveneNeoplasticOsteosarcomaTumorApoptosis Regulatory ProteinMedicine (all)Cell CycleApoptosiMicroRNACell BiologyGene Expression Regulation NeoplasticMicroRNAsPhenotypeGene Expression RegulationDrug Resistance NeoplasmNeoplastic Stem CellsNeoplasmNeoplastic Stem CellApoptosis Regulatory ProteinsTranscription FactorsHumanSignal Transduction
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Cilium induction triggers differentiation of glioma stem cells.

2020

Glioblastoma multiforme (GBM) possesses glioma stem cells (GSCs) that promote self-renewal, tumor propagation, and relapse. Understanding the mechanisms of GSCs self-renewal can offer targeted therapeutic interventions. However, insufficient knowledge of GSCs' fundamental biology is a significant bottleneck hindering these efforts. Here, we show that patient-derived GSCs recruit elevated levels of proteins that ensure the temporal cilium disassembly, leading to suppressed ciliogenesis. Depleting the cilia disassembly complex components is sufficient to induce ciliogenesis in a subset of GSCs via relocating platelet-derived growth factor receptor-alpha (PDGFR-α) to a newly induced cilium. Im…

endocrine systemmedicine.medical_treatmentBiologyGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciencesMice0302 clinical medicineGentamicin protection assayGliomaCiliogenesisCell Line TumormedicineAnimalsHumansCell Self Renewal030304 developmental biologyCell Proliferation0303 health sciencesBrain NeoplasmsCiliumGrowth factorfungiBrainCell DifferentiationGliomaCilium disassemblyCell cyclemedicine.diseaseCell biology030220 oncology & carcinogenesisNeoplastic Stem CellsStem cellNeoplasm Recurrence LocalGlioblastomaCell reports
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