Search results for " Cancer Stem Cells"

showing 6 items of 66 documents

Genetic and Molecular Characterization of The Human Osteosarcoma 3AB-OS Cancer Stem Cell Line: A Possible Model For Studying Osteosarcoma Origin and …

2013

Finding new treatments targeting cancer stem cells (CSCs) within a tumor seems to be critical to halt cancer and improve patient survival. Osteosarcoma is an aggressive tumor affecting adolescents, for which there is no second-line chemotherapy. Uncovering new molecular mechanisms underlying the development of osteosarcoma and origin of CSCs is crucial to identify new possible therapeutic strategies. Here, we aimed to characterize genetically and molecularly the human osteosarcoma 3AB-OS CSC line, previously selected from MG63 cells and which proved to have both in vitro and in vivo features of CSCs. Classic cytogenetic studies demonstrated that 3AB-OS cells have hypertriploid karyotype wit…

cancer stem cellsPhysiologyClinical Biochemistrymedicine.disease_causePolymerase Chain ReactionOsteosarcoma cancer stem cellSettore BIO/10 - BiochimicaChromosomes HumanGene Regulatory NetworksCopy-number variationOligonucleotide Array Sequence AnalysisGeneticsComparative Genomic HybridizationOsteosarcomabiologychromosomal aberrationGene Expression Regulation NeoplasticPhenotypemiRNAsNeoplastic Stem CellsOsteosarcomaMitosisBone NeoplasmsHMGA2Cancer stem cellCell Line TumormicroRNABiomarkers Tumorgene expression profilingmedicineHumansOsteosarcoma cancer stem cells; karyotype; chromosomal aberrations; gene expression profiling; miRNAsCell LineageGenetic Predisposition to DiseaseRNA MessengerCell NucleusChromosome AberrationsPloidiesModels GeneticComputational BiologyCancerCell Biologymedicine.diseasekaryotypeMicroRNAsKaryotypingbiology.proteinCancer researchCarcinogenesisComparative genomic hybridization
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TAZ is required for metastatic activity and chemoresistance of breast cancer stem cells

2015

Metastatic growth in breast cancer (BC) has been proposed as an exclusive property of cancer stem cells (CSCs). However, formal proof of their identity as cells of origin of recurrences at distant sites and the molecular events that may contribute to tumor cell dissemination and metastasis development are yet to be elucidated. In this study, we analyzed a set of patient-derived breast cancer stem cell (BCSC) lines. We found that in vitro BCSCs exhibit a higher chemoresistance and migratory potential when compared with differentiated, nontumorigenic, breast cancer cells (dBCCs). By developing an in vivo metastatic model simulating the disease of patients with early BC, we observed that BCSCs…

cancer stem cellsTAZAnimals; Biomarkers Tumor; Breast Neoplasms; Cell Line Tumor; Disease-Free Survival; Female; Gene Expression Regulation Neoplastic; Humans; Mice; Neoplasm Metastasis; Neoplasm Recurrence Local; Neoplastic Stem Cells; Transcription Factors; Xenograft Model Antitumor AssaysCancer ResearchBioinformaticschemotherapyMetastasistaz; breast cancerMiceNeoplasm Metastasiseducation.field_of_studyTumorIntracellular Signaling Peptides and ProteinsCell cycleGene Expression Regulation NeoplasticLocalNeoplastic Stem Cellsbreast cancer; cancer stem cells; chemotherapy; metastasis; TAZ; Animals; Biomarkers Tumor; Breast Neoplasms; Cell Line Tumor; Disease-Free Survival; Female; Gene Expression Regulation Neoplastic; Humans; Intracellular Signaling Peptides and Proteins; Mice; Neoplasm Metastasis; Neoplasm Recurrence Local; Neoplastic Stem Cells; Xenograft Model Antitumor Assays; Molecular Biology; Genetics; Cancer ResearchFemaleStem cellPopulationBreast NeoplasmsBiologyDisease-Free SurvivalCell Linebreast cancer cancer stem cells TAZBreast cancerbreast cancerCancer stem cellSettore MED/04 - PATOLOGIA GENERALECell Line TumormedicineBiomarkers TumorGeneticsmetastasisAnimalsHumanseducationMolecular BiologyHippo signaling pathwayNeoplasticCancermedicine.diseaseXenograft Model Antitumor AssaysNeoplasm RecurrenceGene Expression RegulationTranscriptional Coactivator with PDZ-Binding Motif ProteinsCancer researchTrans-ActivatorsNeoplasm Recurrence LocalBiomarkersTranscription Factors
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Estrogens and Stem Cells in Thyroid Cancer

2014

Recent discoveries highlight the emerging role of estrogens in the initiation and progression of different malignancies through their interaction with stem cell compartment. Estrogens play a relevant role especially for those tumors bearing a gender disparity in incidence and aggressiveness, as occurs for most thyroid diseases. Although several experimental lines suggest that estrogens promote thyroid cell proliferation and invasion, their precise contribution in stem cell compartment still remains unclear. This review underlines the interplay between hormones and thyroid function, which could help to complete the puzzle of gender discrepancy in thyroid malignancies. Defining the associatio…

cancer stem cellsendocrine systemendocrine system diseasesMini ReviewEndocrinology Diabetes and MetabolismEstrogen receptorlcsh:Diseases of the endocrine glands. Clinical endocrinologyEndocrinologyCancer stem cellstem cellsgrowth factorsmedicinethyroid cancerThyroid cancerSettore MED/04 - Patologia Generalecancer stem cells (CSC)thyroid hormoneslcsh:RC648-665business.industryThyroidmedicine.diseasethyroid cancer stem cells cancer stem cells estrogens thyroid hormones growth factorsmedicine.anatomical_structureImmunologyCancer researchSignal transductionStem cellThyroid functionbusinessHormoneestrogensFrontiers in Endocrinology
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A short story of 3AB-OS Cancer Stem Cells, a possible model for studying cancer stemness

2014

All tumors contain a population of Cancer Stem Cells (CSCs) responsible for the initiation, growth and development of the tumor and a challenge in cancer research is their identification and eradication. In our laboratory, by chemical treatment of the human osteosarcoma MG63 cell line, we have isolated and characterized the human OS CSC line (3AB-OS). 3AB-OS CSCs have a significant chromosomal complexity and a large number of molecular abnormalities which appear to be strongly congruent with those described in a large number of pediatric and adult osteosarcomas. 3AB-OS cells transdifferentiated in vitro into cells of all three primary germ layers and, when xenografted in athymic mice they w…

education.field_of_studyMutationPopulationCancerGeneral MedicineGerm layerBiologymedicine.disease_causemedicine.diseaseMolecular biologyIn vitroCancer stem cellCancer researchmedicineOsteosarcoma3AB-OS cancer stem cells cancer stemnesseducationGeneCancer Cell & Microenvironment
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Correlative Raman-Electron-Light (CREL) Microscopy Analysis of Lipid Droplets in Melanoma Cancer Stem Cells.

2022

Among all neoplasms, melanoma is characterized by a very high percentage of cancer stem cells (CSCs). Several markers have been proposed for their identification, and lipid droplets (LDs) are among them. Different techniques are used for their characterization such as mass spectrometry, imaging techniques, and vibrational spectroscopies. Some emerging experimental approaches for the study of LDs are represented by correlative light–electron microscopy and by correlative Raman imaging–scanning electron microscopy (SEM). Based on these scientific approaches, we developed a novel methodology (CREL) by combining Raman micro-spectroscopy, confocal fluorescence microscopy, and SEM coupled with an…

electron microscopyClinical BiochemistrySettore MED/50 - Scienze Tecniche Mediche ApplicateBiomedical Engineeringmelanoma cancer stem cellRaman micro-imaginglipid dropletElectronsGeneral MedicineLipid DropletsSpectrum Analysis RamanAnalytical Chemistrycorrelative microscopy; lipid droplets; melanoma cancer stem cells; Raman micro-imaging; electron microscopyMicroscopy Electron ScanningNeoplastic Stem CellsHumanscorrelative microscopySettore MED/46 - Scienze Tecniche Di Medicina Di LaboratorioInstrumentationEngineering (miscellaneous)MelanomaBiotechnologyBiosensors
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In human osteosarcoma 3AB-OS cancer stem cells let-7d seems to have the dual function of oncogene/tumor-suppressor miRNA

2015

Introduction: Osteosarcoma (OS), an aggressive tumor a!ecting adolescents, shows therapy resistance and recurrence which can depend on cancer stem cells (CSCs), the source for tissue renewal and hold malignant potential; thus, OS treatment requires their eradication. Here, using 3AB-OS CSCs previously obtained from the OS-MG63 cells, we focused on the role of let-7d in managing stemness properties of 3AB-OS CSCs. Methods: 3AB-OS CSCs were stably transfected with pCDomH-plasmid, containing mir-let7-d, or empty vector as a control. Cell proliferation and viability were evaluated by EdU and Trypan blue assays, respectively. Sarcosphere and colony assays and wound healing and transwell invasion…

osteosarcoma cancer stem cells let-7d
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