Search results for " APOPTOSIS"

showing 10 items of 372 documents

NAIP-deltaEx10-11: a novel splice variant of the apoptosis inhibitor NAIP differently expressed in drug-sensitive and multidrug-resistant HL60 leukem…

2002

Alterations of neuronal apoptosis inhibitory protein (NAIP), a member of the inhibitory of apoptosis protein (IAP) family of inhibitors of apoptosis, have been previously associated with different neurodegenerative disorders. This study indicated the existence of a novel NAIP splice variant. This isoform, NAIP-deltaEx10-11, was found in tumor cell lines of different origin and in normal adult brain. Analysis of the putative protein predicted that the NAIP variant lacks part of the third BIR domain as well as the COOH-terminal tail of regular NAIP. This might suggest that it is endowed with a reduced antiapoptotic activity. This view is supported by the fact that NAIP-deltaEx10-11 mRNA and p…

Gene isoformCancer ResearchApoptosis InhibitorHL60ApoptosisHL-60 CellsNerve Tissue ProteinsBiologyExonchemistry.chemical_compoundmedicineRNA PrecursorsTumor Cells CulturedHumansProtein IsoformsRNA NeoplasmSequence DeletionGeneticsBrain ChemistryAlternative splicingHematologyExonsmedicine.diseaseDrug Resistance MultipleNeuronal Apoptosis-Inhibitory ProteinNeoplasm ProteinsProtein Structure TertiaryLeukemiaAlternative SplicingOncologychemistryApoptosisDrug Resistance NeoplasmCancer researchNAIPLeukemia research
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2013

Clusterin, also known as apolipoprotein J, is expressed from a variety of tissues and implicated in pathological disorders such as neurodegenerative diseases, ischemia and cancer. In contrast to secretory clusterin (sCLU), which acts as an extracellular chaperone, the synthesis, subcellular localization and function(s) of intracellular CLU isoforms is currently a matter of intense discussion. By investigating human CLU mRNAs we here unravel mechanisms leading to the synthesis of distinct CLU protein isoforms and analyze their subcellular localization and their impact on apoptosis and on NF-κB-activity. Quantitative PCR-analyses revealed the expression of four different stress-inducible CLU …

Gene isoformMessenger RNAMultidisciplinaryBcl-2-associated X proteinClusterinbiologyIntrinsic apoptosisHEK 293 cellsbiology.proteinSignal transductionSubcellular localizationMolecular biologyPLOS ONE
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C1q acts in the tumour microenvironment as a cancer-promoting factor independently of complement activation

2015

Complement C1q is the activator of the classical pathway. However, it is now recognized that C1q can exert functions unrelated to complement activation. Here we show that C1q, but not C4, is expressed in the stroma and vascular endothelium of several human malignant tumours. Compared with wild-type (WT) or C3- or C5-deficient mice, C1q-deficient (C1qa−/−) mice bearing a syngeneic B16 melanoma exhibit a slower tumour growth and prolonged survival. This effect is not attributable to differences in the tumour-infiltrating immune cells. Tumours developing in WT mice display early deposition of C1q, higher vascular density and an increase in the number of lung metastases compared with C1qa−/− mi…

Genetics and Molecular Biology (all)0301 basic medicinePROTEINGeneral Physics and AstronomyMELANOMAApoptosisInbred C57BLBiochemistryDISEASEAnimals; Apoptosis; Cell Line Tumor; Cell Movement; Cell Proliferation; Complement Activation; Complement C1q; Complement C3; Complement C5; Humans; Mice; Mice Inbred C57BL; Mice Knockout; Neoplasms; Biochemistry Genetics and Molecular Biology (all); Chemistry (all); Physics and Astronomy (all)Micefluids and secretionsCell Movementimmune system diseasesNeoplasmsIMMUNE-RESPONSEskin and connective tissue diseasesComplement ActivationComplement C1qMice KnockoutComplement component 5TumorMultidisciplinaryQChemistry (all)Complement C5Complement C33. Good healthCell biologyMultidisciplinary SciencesDEFICIENCYmedicine.anatomical_structureScience & Technology - Other TopicsHumanKnockoutSciencechemical and pharmacologic phenomenaBiologyArticleGeneral Biochemistry Genetics and Molecular BiologyTROPHOBLAST INVASIONMECHANISMSCell LinePhysics and Astronomy (all)03 medical and health sciencesClassical complement pathwayImmune systemINFLAMMATIONCell Line TumormedicineAnimalsHumansCell ProliferationScience & TechnologyBiochemistry Genetics and Molecular Biology (all)AnimalCell growthEFFECTOR SYSTEMComplement C1qApoptosiGeneral ChemistryComplement systemMice Inbred C57BL030104 developmental biologyCancer cellNeoplasmBone marrowANTIBODY THERAPYNature Communications
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Identification and characterization of novel associations in the CASP8/ALS2CR12 region on chromosome 2 with breast cancer risk.

2014

Previous studies have suggested that polymorphisms in CASP8 on chromosome 2 are associated with breast cancer risk. To clarify the role of CASP8 in breast cancer susceptibility, we carried out dense genotyping of this region in the Breast Cancer Association Consortium (BCAC). Single-nucleotide polymorphisms (SNPs) spanning a 1 Mb region around CASP8 were genotyped in 46 450 breast cancer cases and 42 600 controls of European origin from 41 studies participating in the BCAC as part of a custom genotyping array experiment (iCOGS). Missing genotypes and SNPs were imputed and, after quality exclusions, 501 typed and 1232 imputed SNPs were included in logistic regressionmodels adjusting for stud…

Genotyping TechniquesResearch Support U.S. Gov't P.H.S.CASP8 and FADD-Like Apoptosis Regulating ProteinGenome-wide association studyP.H.S.Medical and Health SciencesBreast and Ovarian Cancer Susceptibility (BOCS) StudyMedizinische FakultätGenetics(clinical)Non-U.S. Gov'tGenetics (clinical)GeneticsGenetics & HeredityvariantsCaspase 8Research Support Non-U.S. Gov'tAssociation Studies ArticlesGeneral MedicineBiological Sciencesddc:Chromosomes Human Pair 2kConFab InvestigatorsFemaleGENICA NetworkAustralian Ovarian Cancer Study GroupEuropean Continental Ancestry GroupNon-P.H.S.Single-nucleotide polymorphismBreast Neoplasms-BiologyResearch SupportPolymorphism Single NucleotideWhite PeopleN.I.H.Breast cancerResearch Support N.I.H. ExtramuralSDG 3 - Good Health and Well-beingmedicineGeneticsJournal ArticleHumansGenetic Predisposition to Diseaseddc:610geneGenotyping TechniquesGenotypingMolecular BiologyGenetic associationdiseaseExtramuralProteinsOdds ratiomedicine.diseasesusceptibility lociMinor allele frequencyCase-Control Studiesgenome-wide associationenhancersU.S. Gov'tcasp8Research Support U.S. Gov't Non-P.H.S.Genome-Wide Association Study
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Induction of apoptosis in the blue mussel Mytilus galloprovincialis by tri-n-butyltin chloride

2001

Induction of apoptosis by tri-n-butyltin (TBT) in gill tissue of the mussel Mytilus galloprovincialis was investigated. The terminal dUTP nick-end labeling technique (TUNEL) was used to detect cells displaying DNA fragmentation within gill structures. Genomic DNA fragmentation was detected as characteristically ladder-like pattern of DNA fragments induced by single injection of different doses of TBT (1-5 microg/g) below the mantle, directly into the pallial fluid, after 24 h of incubation. DNA degradation of higher order DNA structure, as well as reduced G(0)/G(1) cell cycle region (the sub-G(1) region) was detectable after 1.5 h of TBT incubation. Presence of apoptotic cells in mussels' g…

GillsGillanimal structuresDNA damageHealth Toxicology and MutagenesisApoptosisDNA FragmentationAquatic ScienceBiologychemistry.chemical_compoundIn Situ Nick-End LabelingAnimalsTUNEL assayCell CyclefungiMusselAnatomyFlow Cytometrybiology.organism_classificationImmunohistochemistryMolecular biologyMytilusBivalviaElectrophoresis Gel Pulsed-FieldchemistryTributyltinDNA damage; apoptosis; tributyltin; musselDNA fragmentationTrialkyltin CompoundsWater Pollutants ChemicalBlue musselAquatic Toxicology
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HISTONE DEACETYLASE INHIBITORS SENSITIZE HEPATOMA CELLS TO TRAIL_INDUCED APOPTOSIS

2008

HDACI HEPATOMA APOPTOSIS
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Activation of a caspase-3-independent mode of cell death associated with lysosomal destabilization in cultured human retinal pigment epithelial cells…

2008

International audience; Purpose: To characterize the possible cytotoxic effects of oxysterols (7-hydroxycholesterol (7-OH), 25-hydroxycholesterol (25-OH)) in human retinal pigment epithelial cells (ARPE-19) and to detail the relationships between some of these effects. Methods: ARPE-19 cells were treated with 7-OH and 25-OH. Cell viability was measured with the MTT assay. Membrane permeability, mitochondrial potential, and lysosomal integrity were measured by flow cytometry with propidium iodide, DiOC6(3), and acridine orange, respectively. Cell death was characterized by staining with Hoechst 33342, transmission electron microscopy, and analysis of the DNA fragmentation pattern. Caspase ac…

HUMAN BRUCHS MEMBRANECell Membrane PermeabilityMembrane PotentialsAGE-RELATED MACULOPATHYchemistry.chemical_compound0302 clinical medicineFluorescent Antibody Technique IndirectPigment Epithelium of EyeCaspaseCells CulturedElectrophoresis Agar Gel0303 health sciencesbiologyCell DeathCaspase 3CHOLESTEROLAcridine orangeApoptosis Inducing FactorCytochromes cDipeptidesKetonesFlow CytometrySensory SystemsCell biologyMitochondrial MembranesDNA fragmentationCOLORIMETRIC ASSAYMembrane permeabilityCell SurvivalBlotting WesternLOW-DENSITY-LIPOPROTEINCaspase 3DNA FragmentationCysteine Proteinase Inhibitors03 medical and health sciencesCellular and Molecular NeuroscienceBASAL DEPOSITSAPOPTOSIS-INDUCING FACTORHumansRPE CELLSViability assayPropidium iodide[SDV.MHEP.OS]Life Sciences [q-bio]/Human health and pathology/Sensory Organs030304 developmental biologyMACULAR DEGENERATIONMolecular biologyHydroxycholesterolsEnzyme ActivationOphthalmologychemistryApoptosis030221 ophthalmology & optometrybiology.proteinLysosomes7-KETOCHOLESTEROL-INDUCED APOPTOSIS[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
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Mutant p53 gain of function can be at the root of dedifferentiation of human osteosarcoma MG63 cells into 3AB-OS cancer stem cells

2014

Osteosarcoma is a highly metastatic tumor affecting adolescents, for which there is no second-line chemotherapy. As suggested for most tumors, its capability to overgrow is probably driven by cancer stem cells (CSCs), and finding new targets to kill CSCs may be critical for improving patient survival. TP53 is the most frequently mutated tumor suppressor gene in cancers and mutant p53 protein (mutp53) can acquire gain of function (GOF) strongly contributing to malignancy. Studies thus far have not shown p53-GOF in osteosarcoma. Here, we investigated TP53 gene status/role in 3AB-OS cells-a highly aggressive CSC line previously selected from human osteosarcoma MG63 cells-to evaluate its involv…

HistologyTumor suppressor genePhysiologyEndocrinology Diabetes and MetabolismApoptosisIn situ hybridizationBiologyTNF-Related Apoptosis-Inducing LigandCell MovementCancer stem cellCell Line TumorSettore BIO/10 - BiochimicaBiomarkers TumormedicineHumansNeoplasm Invasiveness3AB-OS cells CSCs Cancer cell dedifferentiation Cancer stem cells FISH Fluorescent in situ hybridization GOF Gain of function Human osteosarcoma MMPs Matrix metalloproteinases Mutant p53 Mutant p53 gain of function Mutp53 OS OsteosarcomaClonogenic assayTumor Stem Cell AssayCell ProliferationMembrane Potential MitochondrialOsteosarcomaCancerReceptors Death DomainCell DedifferentiationCell cyclemedicine.diseaseMolecular biologyAmino Acid SubstitutionProto-Oncogene Proteins c-bcl-2Gene Knockdown TechniquesMutationNeoplastic Stem CellsCancer researchOsteosarcomaEctopic expressionTumor Suppressor Protein p53Bone
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Immunohistochemical expression of apoptotic factors, cytokeratins, and metalloproteinase-9 in periapical and epithelialized gingival lesions

2012

Bellmann K, 2010, CELL STRESS CHAPERON, V15, P101, DOI 10.1007-s12192-009-0126-9; Cappello Francesco, 2011, Front Biosci (Schol Ed), V3, P341, DOI 10.2741-s155; Cappello F, 2006, CANCER, V107, P2417, DOI 10.1002-cncr.22265; Cappello F, 2002, EUR J HISTOCHEM, V46, P199; Carneiro E, 2009, ORAL SURG ORAL MED O, V107, P127, DOI 10.1016-j.tripleo.2008.07.030; Chandra D, 2007, J BIOL CHEM, V282, P31289, DOI 10.1074-jbc.M702777200; Fujita Y, 2011, ODONTOLOGY, V100, P215; Garcia Celia Carrillo, 2007, Med Oral Patol Oral Cir Bucal, V12, pE585; Garcia CC, 2009, ORAL SURG ORAL MED O, V107, pE43, DOI 10.1016-j.tripleo.2008.12.002; Gregory CD, 2011, J PATHOL, V223, P177, DOI 10.1002-path.2792; Gupta S, …

Histologybusiness.industryCaspase 3GingivaApoptosisGeneral MedicineMolecular biologyImmunohistochemistryCaspase 9EpitheliumPathology and Forensic MedicineCell stressMatrix Metalloproteinase 9cytokeratins MMP-9 caspase-3 caspase-9 perapical lesions epithelial gingival lesions apoptosisIHC PCNA TUNELProliferating Cell Nuclear AntigenMedicineHumansKeratinsbusinessApoptosis Regulatory ProteinsPeriapical Granuloma
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SELECTION OF THE BEST OOCYTES FOR INTRACYTOPLASMICSPERM INJECTION (ICSI) USING APOPTOTIC ANALYSIS OF CUMULUS CELLS

2015

Introduction: We studied the apoptosis rate of the cumulus cells of individual cumulus-oocyte complex (COC), to verify a relationship with clinical outcomes, in terms of pregnancy and implantation rates. Usually oocytes are selected using morphological criteria. We tried to verify if cumulus cell apoptotic rate could be used as molecular criteria in selecting oocytes with higher implantation potentiality (1;2). Materials and Methods: The study design consisted in two different trials: in the first, we investigated apoptosis rate in cumulus cells of the three selected oocytes, to be fertilized by intracytoplasmic sperm injection (ICSI); in a second trial, average apoptosis rate of the cumulu…

ICSI APOPTOSISApoptosis cumulus cells ICSISettore BIO/06 - Anatomia Comparata E Citologia
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