Search results for "5-AZA-2'-DEOXYCYTIDINE"

showing 3 items of 3 documents

DNA demethylation caused By 5-Aza-2'-Deoxycytidine induces mitotic alterations and aneuploidy

2016

Aneuploidy, the unbalanced number of chromosomes in a cell, is considered a prevalent form of genetic instability and is largely acknowledged as a condition implicated in tumorigenesis. Epigenetic alterations like DNA hypomethylation have been correlated with cancer initiation/progression. Furthermore, a growing body of evidence suggests the involvement of epigenome-wide disruption as a cause of global DNA hypomethylation in aneuploidy generation. Here, we report that the DNA hypomethylating drug 5-aza-2′-deoxycytidine (DAC), affects the correct ploidy of nearly diploid HCT-116 human cells by altering the methylation pattern of the chromosomes. Specifically, we show that a DAC-induced reduc…

0301 basic medicineAntimetabolites Antineoplastic5-aza-2'-deoxycytidine (DAC); Aneuploidy; Chromosome methylation pattern; Chromosome Section; DNA demethylation; OncologyBlotting WesternAneuploidyMitosisApoptosisBiologymedicine.disease_causeDecitabineReal-Time Polymerase Chain ReactionChromosome Section03 medical and health scienceschromosome methylation patternChromosome instabilitymedicineTumor Cells CulturedHumansEpigeneticsaneuploidyRNA Messenger5-aza-2′-deoxycytidine (DAC)Cell ProliferationGeneticsChromosome AberrationsPloidiesReverse Transcriptase Polymerase Chain ReactionDNA Methylationmedicine.disease5-aza-2'-deoxycytidine (DAC)Gene Expression Regulation NeoplasticResearch Paper: ChromosomeSettore BIO/18 - Genetica030104 developmental biologyDNA demethylationOncologyMicroscopy FluorescenceDNA methylationColonic NeoplasmsCytogenetic AnalysisCancer researchDNA demethylationAzacitidinePloidyCarcinogenesisDNA hypomethylation
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DNA Hypomethylation and Histone Variant macroH2A1 Synergistically Attenuate Chemotherapy-Induced Senescence to Promote Hepatocellular Carcinoma Progr…

2016

Abstract Aging is a major risk factor for progression of liver diseases to hepatocellular carcinoma (HCC). Cellular senescence contributes to age-related tissue dysfunction, but the epigenetic basis underlying drug-induced senescence remains unclear. macroH2A1, a variant of histone H2A, is a marker of senescence-associated heterochromatic foci that synergizes with DNA methylation to silence tumor-suppressor genes in human fibroblasts. In this study, we investigated the relationship between macroH2A1 splice variants, macroH2A1.1 and macroH2A1.2, and liver carcinogenesis. We found that protein levels of both macroH2A1 isoforms were increased in the livers of very elderly rodents and humans, a…

0301 basic medicineEpigenomicsCHROMATINCancer ResearchLIVERCancer Research; OncologyGene ExpressionSECRETORY PHENOTYPEHCV CORE PROTEINHistonesCell MovementProtein IsoformsCellular SenescenceEpigenomicsAged 80 and overMice KnockoutbiologyLiver NeoplasmsMETHYLATIONHep G2 CellsCANCERChromatinHistoneOncologyDNA methylationAzacitidineDisease ProgressionCell agingSTEM-CELLSSenescenceAdultEXPRESSIONCarcinoma HepatocellularArticle5-AZA-2'-DEOXYCYTIDINE03 medical and health sciencesCell Line TumorAnimalsHumansEpigeneticsCell ProliferationDNA Methylationbeta-GalactosidaseMolecular biologyMice Inbred C57BLMICE030104 developmental biologybiology.proteinCancer researchDNA hypomethylation
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Inhibition of DNA methylation sensitizes glioblastoma for tumor necrosis factor-related apoptosis-inducing ligand-mediated destruction.

2005

AbstractLife expectancy of patients affected by glioblastoma multiforme is extremely low. The therapeutic use of tumor necrosis factor–related apoptosis-inducing ligand (TRAIL) has been proposed to treat this disease based on its ability to kill glioma cell lines in vitro and in vivo. Here, we show that, differently from glioma cell lines, glioblastoma multiforme tumors were resistant to TRAIL stimulation because they expressed low levels of caspase-8 and high levels of the death receptor inhibitor PED/PEA-15. Inhibition of methyltransferases by decitabine resulted in considerable up-regulation of TRAIL receptor-1 and caspase-8, down-regulation of PED/PEA-15, inhibition of cell growth, and …

MaleCancer ResearchMethyltransferaseNudeDrug ResistanceApoptosisReceptors Tumor Necrosis FactorTNF-Related Apoptosis-Inducing LigandCASPASE-8 EXPRESSIONMiceNude mouseSIGNALING COMPLEXReceptorsAntineoplastic Combined Chemotherapy ProtocolsTumor Cells CulturedDNA Modification MethylasesIN-VIVOHeterologousCaspase 8CulturedMembrane GlycoproteinsbiologyIntracellular Signaling Peptides and ProteinsMiddle AgedTumor CellsGene Expression Regulation NeoplasticMALIGNANT GLIOMA-CELLSOncologyCaspasesDNA methylationAzacitidineTumor necrosis factor alphaFemalemedicine.drugSignal TransductionAdultBRAIN-TUMORSTransplantation HeterologousCHEMOTHERAPEUTIC-AGENTSDecitabineMice NudeDecitabineDRUG-INDUCED APOPTOSISDEATH RECEPTOR5-AZA-2'-DEOXYCYTIDINEIn vivoSettore MED/04 - PATOLOGIA GENERALEmedicineAnimalsHumansneoplasmsAgedTransplantationNeoplasticCell growthTumor Necrosis Factor-alphaHistocompatibility Antigens Class IDNA Methylationbiology.organism_classificationPhosphoproteinsReceptors TNF-Related Apoptosis-Inducing LigandGene Expression RegulationApoptosisDrug Resistance NeoplasmImmunologyCancer researchNeoplasmAdult; Aged; Animals; Antineoplastic Combined Chemotherapy Protocols; Apoptosis; Apoptosis Regulatory Proteins; Azacitidine; Caspase 8; Caspases; DNA Modification Methylases; Drug Resistance Neoplasm; Female; Glioblastoma; Histocompatibility Antigens Class I; Humans; Intracellular Signaling Peptides and Proteins; Male; Membrane Glycoproteins; Mice; Mice Nude; Middle Aged; Phosphoproteins; Receptors TNF-Related Apoptosis-Inducing Ligand; Receptors Tumor Necrosis Factor; Signal Transduction; TNF-Related Apoptosis-Inducing Ligand; Transplantation Heterologous; Tumor Cells Cultured; Tumor Necrosis Factor-alpha; DNA Methylation; Gene Expression Regulation Neoplastic; Cancer Research; OncologyTumor Necrosis FactorTRAIL-INDUCED APOPTOSISApoptosis Regulatory ProteinsGlioblastomaCancer research
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