Search results for "casp8"

showing 10 items of 19 documents

Lauroside B, a Megastigmane Glycoside from Laurus Nobilis (Bay Laurel) Leaves, Induces Apoptosis in Human Melanoma Cell Lines by Inhibiting NF-κB Act…

2010

Malignant melanoma is a highly aggressive tumor that frequently resists chemotherapy, so the search for new agents for its treatment is of great importance. In the present study, the antiproliferative propensity against human melanoma cell lines of lauroside B (1), a megastigmane glycoside isolated from Laurus nobilis (bay laurel) leaves, was investigated. This compound suppressed the proliferation of three human melanoma cell lines, namely, A375, WM115, and SK-Mel-28. The 1-induced inhibition of human melanoma cell proliferation was due to the induction of apoptosis, as demonstrated by FACS analysis with annexin V/PI staining and confirmed by activation of caspase-3 and by the cleavage of …

Poly ADP ribose polymeraseCASP8 and FADD-Like Apoptosis Regulating ProteinPharmaceutical ScienceApoptosisX-Linked Inhibitor of Apoptosis ProteinBiologyLaurusLauroside BAnalytical ChemistryLaurus nobilisfoodAnnexinDrug DiscoverymedicineHumansGlycosidesCytotoxicityMelanomaCancerPharmacologyMolecular StructureCell growthMelanomaOrganic ChemistryNF-kappa Bmedicine.diseaseAntineoplastic Agents Phytogenicfood.foodI-kappa B KinasePlant LeavesItalyComplementary and alternative medicineBiochemistryCell cultureApoptosisCancer researchMolecular MedicineDrug Screening Assays AntitumorPoly(ADP-ribose) PolymerasesNorisoprenoidsJournal of Natural Products
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Loss of cellular FLICE-inhibitory protein promotes acute cholestatic liver injury and inflammation from bile duct ligation.

2017

Cholestatic liver injury results from impaired bile flow or metabolism and promotes hepatic inflammation and fibrogenesis. Toxic bile acids that accumulate in cholestasis induce apoptosis and contribute to early cholestatic liver injury, which is amplified by accompanying inflammation. The aim of the current study was to evaluate the role of the antiapoptotic caspase 8-homolog cellular FLICE-inhibitory (cFLIP) protein during acute cholestatic liver injury. Transgenic mice exhibiting hepatocyte-specific deletion of cFLIP (cFLIP−/−) were used for in vivo and in vitro analysis of cholestatic liver injury using bile duct ligation (BDL) and the addition of bile acids ex vivo. Loss of cFLIP in h…

0301 basic medicineLiver CirrhosisTime FactorsPhysiologyCASP8 and FADD-Like Apoptosis Regulating ProteinInflammationApoptosisp38 Mitogen-Activated Protein KinasesHepatitisBile Acids and Salts03 medical and health sciencesNecrosisCholestasisPhysiology (medical)medicineHepatic Stellate CellsAnimalsASK1Genetic Predisposition to DiseaseLigationCells CulturedTumor Necrosis Factor alpha-Induced Protein 3chemistry.chemical_classificationLiver injuryCommon Bile DuctMice KnockoutReactive oxygen speciesHepatologyBile duct ligationGastroenterologyTranscription Factor RelAmedicine.diseaseOxidative Stress030104 developmental biologyCholedocholithiasisPhenotypechemistryLiverNeutrophil InfiltrationApoptosisFLICE Inhibitory ProteinCancer researchHepatocytesCytokinesmedicine.symptomInflammation MediatorsSignal TransductionAmerican journal of physiology. Gastrointestinal and liver physiology
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Chemotherapy overcomes TRAIL-R4-mediated TRAIL resistance at the DISC level

2011

International audience; TNF-related apoptosis-inducing ligand or Apo2L (Apo2L/TRAIL) is a promising anti-cancer drug owing to its ability to trigger apoptosis by binding to TRAIL-R1 or TRAIL-R2, two membrane-bound receptors that are often expressed by tumor cells. TRAIL can also bind non-functional receptors such as TRAIL-R4, but controversies still exist regarding their potential to inhibit TRAIL-induced apoptosis. We show here that TRAIL-R4, expressed either endogenously or ectopically, inhibits TRAIL-induced apoptosis. Interestingly, the combination of chemotherapeutic drugs with TRAIL restores tumor cell sensitivity to apoptosis in TRAIL-R4-expressing cells. This sensitization, which ma…

MESH: CASP8 and FADD-Like Apoptosis Regulating ProteinMESH : Antineoplastic Combined Chemotherapy ProtocolsCASP8 and FADD-Like Apoptosis Regulating ProteinTRAILApoptosisMESH : Models BiologicalMitochondrionMESH : RNA Small InterferingMESH: Caspase 8TNF-Related Apoptosis-Inducing LigandMESH : TNF-Related Apoptosis-Inducing LigandMESH : Tumor Necrosis Factor Decoy Receptors0302 clinical medicineRNA interferenceNeoplasmsAntineoplastic Combined Chemotherapy ProtocolsMESH: RNA Small InterferingMESH: NeoplasmsRNA Small InterferingReceptorSensitizationCaspase 80303 health sciencesMESH : Caspase 8MESH: Drug Resistance Neoplasm3. Good healthCell biologyMESH: Antineoplastic Combined Chemotherapy ProtocolsMESH : Drug Resistance Neoplasmmedicine.anatomical_structure030220 oncology & carcinogenesisRNA InterferenceMESH : GPI-Linked ProteinsMESH: TNF-Related Apoptosis-Inducing LigandDeath Domain Receptor Signaling Adaptor ProteinsProgrammed cell deathMESH: Cell Line Tumorc-FLIPMESH: RNA InterferenceBiologyGPI-Linked ProteinsCaspase 8Models Biological03 medical and health sciencesCell Line TumorReceptors Tumor Necrosis Factor Member 10cmedicineTRAIL-R4HumanscancerChemotherapy[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular BiologyMESH: Receptors TNF-Related Apoptosis-Inducing LigandMESH : Receptors TNF-Related Apoptosis-Inducing Ligand[ SDV.BBM ] Life Sciences [q-bio]/Biochemistry Molecular BiologyMolecular Biology030304 developmental biologyOriginal PaperMESH: HumansMESH : Cell Line TumorMESH: ApoptosisMESH : HumansMESH: Models BiologicalMESH : CASP8 and FADD-Like Apoptosis Regulating ProteinCell BiologyMESH: Tumor Necrosis Factor Decoy ReceptorsMESH : NeoplasmsReceptors TNF-Related Apoptosis-Inducing LigandTumor Necrosis Factor Decoy ReceptorsDrug Resistance NeoplasmApoptosisMESH : RNA InterferenceMESH: GPI-Linked ProteinsMESH : ApoptosisMESH : Death Domain Receptor Signaling Adaptor ProteinsMESH: Death Domain Receptor Signaling Adaptor ProteinsTumor Necrosis Factor Decoy Receptors
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Up-regulation of c-FLIPshort and reduction of activation-induced cell death in T-cells from patients with Type 1 diabetes

2004

AICD of T-cells is an efficient way of removing activated T-lymphocytes. In this study we investigated the molecular basis of AICD upon reactivation in peripheral T-lymphocytes from newly diagnosed T1DM patients and age-matched healthy controls. In an in vitro model system, PHA-stimulated T-cells, upon prolonged culture in IL-2, acquire a sensitive phenotype to Fas-mediated apoptosis. This phenomenon is less pronounced in T1DM T-cells. Moreover, the restimulation of activated T-cells via TCR/CD3 and/or via CD28 inhibits Fas-mediated apoptosis in T1DM in comparison to control T-cells. After Fas triggering, the generation of the active sub-units of caspase-8 is significantly reduced in T1DM T…

MaleCaspase 8Adolescenttype 1 diabetesT-LymphocytesCASP8 and FADD-Like Apoptosis Regulating ProteinIntracellular Signaling Peptides and ProteinsApoptosisLymphocyte ActivationCaspase InhibitorsSettore MED/13 - EndocrinologiaUp-RegulationDiabetes Mellitus Type 1CD28 AntigensReceptor-CD3 Complex Antigen T-CellCase-Control StudiesCaspasesHumansFemaleCarrier Proteins
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Histone deacetylase inhibition by valproic acid down-regulates c-FLIP/CASH and sensitizes hepatoma cells towards CD95-and TRAIL receptor-mediated apo…

2005

Hepatocellular carcinoma (HCC) is highly resistant to chemotherapy, leading to a poor prognosis of advanced disease. Inhibitors of histone deacetylase (HDACi) induce re-differentiation in tumor cells and thereby re-establish sensitivity towards apoptotic stimuli. HDACi are entering the clinical stage of tumor treatment, and several substances are currently being tested in clinical trials to prove their efficacy in the treatment of leukemias and solid tumors. In this study, we investigated the impact of the HDACi valproic acid (VA) on TRAIL- and CD95-mediated apoptosis in hepatoma cells, as well as its sensitizing effect on a chemotherapeutic agent. Treatment of HepG2 cells with VA increased…

Cancer ResearchProgrammed cell deathCarcinoma Hepatocellularmedicine.medical_treatmentCellCASP8 and FADD-Like Apoptosis Regulating ProteinDown-RegulationCaspase 3ApoptosisBiologyReceptors Tumor Necrosis FactorTNF-Related Apoptosis-Inducing LigandAntineoplastic Combined Chemotherapy ProtocolsmedicineHumansfas ReceptorEpirubicinChemotherapyMembrane GlycoproteinsCaspase 3Tumor Necrosis Factor-alphaValproic AcidLiver NeoplasmsIntracellular Signaling Peptides and ProteinsGeneral MedicineCell cycleFas receptorHistone Deacetylase Inhibitorsmedicine.anatomical_structureOncologyApoptosisDrug Resistance NeoplasmCaspasesCancer researchHistone deacetylaseApoptosis Regulatory Proteins
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Parthenolide generates reactive oxygen species and autophagy in MDA-MB231 cells. A soluble parthenolide analogue inhibits tumour growth and metastasi…

2013

Triple-negative breast cancers (TNBCs) are clinically aggressive forms associated with a poor prognosis. We evaluated the cytotoxic effect exerted on triple-negative MDA-MB231 breast cancer cells both by parthenolide and its soluble analogue dimethylamino parthenolide (DMAPT) and explored the underlying molecular mechanism. The drugs induced a dose- and time-dependent decrement in cell viability, which was not prevented by the caspase inhibitor z-VAD-fmk. In particular in the first hours of treatment (1–3 h), parthenolide and DMAPT strongly stimulated reactive oxygen species (ROS) generation. The drugs induced production of superoxide anion by activating NADPH oxidase. ROS generation caused…

Cancer ResearchautophagyCell SurvivalparthenolideFas-Associated Death Domain ProteinImmunologyCASP8 and FADD-Like Apoptosis Regulating ProteinBreast Neoplasmsparthenolide; ROS; NOX; autophagy; breast cancer xenograft.MiceCellular and Molecular Neurosciencechemistry.chemical_compoundDownregulation and upregulationCell Line TumorSettore BIO/10 - BiochimicaAnimalsHumansParthenolidePropidium iodidebreast cancer xenograftMembrane Potential Mitochondrialchemistry.chemical_classificationReactive oxygen speciesNADPH oxidasebiologybreast cancer xenograft.SuperoxideNF-kappa BRNA-Binding ProteinsROSCell BiologyNOXXenograft Model Antitumor AssaysMolecular biologyNuclear Pore Complex ProteinsVascular endothelial growth factorchemistryCell cultureCancer researchbiology.proteinCalciumFemaleOriginal ArticleReactive Oxygen SpeciesSesquiterpenes
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Rho protein inactivation induced apoptosis of cultured human endothelial cells.

2002

Small GTP-binding Rho GTPases regulate important signaling pathways in endothelial cells, but little is known about their role in endothelial cell apoptosis. Clostridial cytotoxins specifically inactivate GTPases by glucosylation [ Clostridium difficile toxin B-10463 (TcdB-10463), C. difficile toxin B-1470 (TcdB-1470)] or ADP ribosylation ( C. botulinum C3 toxin). Exposure of human umbilical cord vein endothelial cells (HUVEC) to TcdB-10463, which inhibits RhoA/Rac1/Cdc42, or to C3 toxin, which inhibits RhoA, -B, -C, resulted in apoptosis, whereas inactivation of Rac1/Cdc42 with TcdB-1470 was without effect, suggesting that Rho inhibition was responsible for endothelial apoptosis. Disruptio…

Pulmonary and Respiratory Medicinerac1 GTP-Binding Proteinrho GTP-Binding ProteinsProgrammed cell deathUmbilical VeinsEndotheliumPhysiologyBacterial ToxinsCASP8 and FADD-Like Apoptosis Regulating ProteinApoptosisBcl-2-associated X proteinBacterial ProteinsPhysiology (medical)Proto-Oncogene ProteinsmedicineCyclic AMPIn Situ Nick-End LabelingHumanscdc42 GTP-Binding ProteinCells Culturedbcl-2-Associated X ProteinAdenosine Diphosphate RibosebiologyCaspase 3Intracellular Signaling Peptides and ProteinsCell BiologyCaspase 9Cell biologyNeoplasm ProteinsEndothelial stem cellmedicine.anatomical_structureCdc42 GTP-Binding ProteinProto-Oncogene Proteins c-bcl-2Cell cultureApoptosisCaspasesbiology.proteinMyeloid Cell Leukemia Sequence 1 ProteinEndothelium VascularSignal transductionCarrier ProteinsrhoA GTP-Binding ProteinBH3 Interacting Domain Death Agonist ProteinSignal TransductionAmerican journal of physiology. Lung cellular and molecular physiology
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Autocrine production of interleukin-4 and interleukin-10 is required for survival and growth of thyroid cancer cells.

2006

AbstractAlthough CD95 and its ligand are expressed in thyroid cancer, the tumor cell mass does not seem to be affected by such expression. We have recently shown that thyroid carcinomas produce interleukin (IL)-4 and IL-10, which promote resistance to chemotherapy through the up-regulation of Bcl-xL. Here, we show that freshly purified thyroid cancer cells were completely refractory to CD95-induced apoptosis despite the consistent expression of Fas-associated death domain and caspase-8. The analysis of potential molecules able to prevent caspase-8 activation in thyroid cancer cells revealed a remarkable up-regulation of cellular FLIPL (cFLIPL) and PED/PEA-15, two antiapoptotic proteins whos…

Cancer Researchmedicine.medical_treatmentNF-KAPPA-BOligonucleotidesC-FLIPCASP8 and FADD-Like Apoptosis Regulating ProteinApoptosisSuppressor of Cytokine Signaling ProteinsSIGNALING COMPLEXThyroid cancerTumorCARCINOMA CELLSANDROGEN RECEPTORIntracellular Signaling Peptides and ProteinsInterleukinHASHIMOTOS-THYROIDITISMiddle AgedProtein-Tyrosine KinasesInterleukin-10Up-RegulationMALIGNANT GLIOMA-CELLSInterleukin 10CytokineOncologyAged; Antibodies; Apoptosis; CASP8 and FADD-Like Apoptosis Regulating Protein; Cell Growth Processes; Cell Line Tumor; Humans; Interleukin-10; Interleukin-4; Intracellular Signaling Peptides and Proteins; Janus Kinase 1; Middle Aged; Oligonucleotides Antisense; Phosphoproteins; Protein-Tyrosine Kinases; Repressor Proteins; STAT6 Transcription Factor; Suppressor of Cytokine Signaling 1 Protein; Suppressor of Cytokine Signaling Proteins; Thyroid Neoplasms; Up-Regulation; fas Receptor; Oncology; Cancer Researchmedicine.medical_specialtyANTIAPOPTOTIC PROTEINSCell Growth ProcessesAntibodiesCell LineThyroid carcinomaSuppressor of Cytokine Signaling 1 ProteinSettore MED/04 - PATOLOGIA GENERALEInternal medicineCell Line TumormedicineHumansThyroid Neoplasmsfas ReceptorAntisenseAutocrine signallingInterleukin 4AgedAPOPTOSIS-INDUCING LIGANDbusiness.industryJanus Kinase 1Oligonucleotides Antisensemedicine.diseasePhosphoproteinsRepressor ProteinsEndocrinologyCancer cellCancer researchInterleukin-4businessApoptosis Regulatory ProteinsSTAT6 Transcription FactorCancer research
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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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Control of target cell survival in thyroid autoimmunity by T helper cytokines via regulation of apoptotic proteins

2000

After autoimmune inflammation, interactions between CD95 and its ligand (CD95L) mediate thyrocyte destruction in Hashimoto's thyroiditis (HT). Conversely, thyroid autoimmune processes that lead to Graves' disease (GD) result in autoantibody-mediated thyrotropin receptor stimulation without thyrocyte depletion. We found that GD thyrocytes expressed CD95 and CD95L in a similar manner to HT thyrocytes, but did not undergo CD95-induced apoptosis either in vivo or in vitro. This pattern was due to the differential production of TH1 and TH2 cytokines. Interferon gamma promoted caspase up-regulation and CD95-induced apoptosis in HT thyrocytes, whereas interleukin 4 and interleukin 10 protected GD …

Adultendocrine systemmedicine.medical_specialtyFas Ligand Proteinendocrine system diseasesCell SurvivalImmunologyCASP8 and FADD-Like Apoptosis Regulating ProteinThyroid Glandbcl-X ProteinApoptosisMice TransgenicIn Vitro TechniquesThyroiditisThyrotropin receptorMiceTh2 CellsSettore MED/04 - PATOLOGIA GENERALEInternal medicinemedicineImmunology and AllergyAnimalsHumansInterferon gammafas ReceptorInterleukin 4CaspaseMembrane GlycoproteinsbiologyThyroidIntracellular Signaling Peptides and ProteinsThyroiditis AutoimmuneT-Lymphocytes Helper-InducerMiddle AgedTh1 CellsFas receptormedicine.diseaseGraves DiseaseInterleukin 10medicine.anatomical_structureEndocrinologyProto-Oncogene Proteins c-bcl-2biology.proteinCytokinesCarrier Proteinsmedicine.drug
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