Search results for " mouse embryonic fibroblasts"

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Microvesicles shed by oligodendroglioma cells and rheumatoid synovial fibroblasts contain aggrecanase activity

2012

Membrane microvesicle shedding is an active process and occurs in viable cells with no signs of apoptosis or necrosis. We report here that microvesicles shed by oligodendroglioma cells contain an ‘aggrecanase’ activity, cleaving aggrecan at sites previously identified as targets for adamalysin metalloproteinases with disintegrin and thrombospondin domains (ADAMTSs). Degradation was inhibited by EDTA, the metalloproteinase inhibitor GM6001 and by tissue inhibitor of metalloproteinases (TIMP)-3, but not by TIMP-1 or TIMP-2. This inhibitor profile indicates that the shed microvesicles contain aggrecanolytic ADAMTS(s) or related TIMP-3-sensitive metalloproteinase(s). The oligodendroglioma cells…

OligodendrogliomaMembrane vesicleRA rheumatoid arthritisADAMTSMatrix metalloproteinaseCell Physiological PhenomenaAdamalysin03 medical and health sciences0302 clinical medicineSettore BIO/10 - BiochimicaEndopeptidasesHumansAggrecansADAM adamalysinADAMTS a disintegrin and metalloproteinase with thrombospondin motifsMolecular BiologyMetalloproteinase030304 developmental biologyAggrecanaseTissue Inhibitor of Metalloproteinase-3MEF mouse embryonic fibroblasts0303 health sciencesMetalloproteinaseChemistryBrief ReportMVs microvesiclesADAMTSMicrovesicleCytoplasmic VesiclesDipeptidesFibroblastsMolecular biologyRecombinant ProteinsMicrovesiclesECM extracellular matrixMembrane vesiclesCell biologyEnzyme ActivationMMP matrix metalloproteinaseADAM ProteinsADAMTS4030220 oncology & carcinogenesisProteolysisADAMTS5 ProteinRheumatic FeverTIMP tissue inhibitor of metalloproteinaseAggrecan
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Age-dependent regulation of antioxidant genes by p38α MAPK in the liver

2018

p38α is a redox sensitive MAPK activated by pro-inflammatory cytokines and environmental, genotoxic and endoplasmic reticulum stresses. The aim of this work was to assess whether p38α controls the antioxidant defense in the liver, and if so, to elucidate the mechanism(s) involved and the age-related changes. For this purpose, we used liver-specific p38α-deficient mice at two different ages: young-mice (4 months-old) and old-mice (24 months-old). The liver of young p38α knock-out mice exhibited a decrease in GSH levels and an increase in GSSG/GSH ratio and malondialdehyde levels. However, old mice deficient in p38α had higher hepatic GSH levels and lower GSSG/GSH ratio than young p38α knock-…

ROS Reactive oxygen species;RSK1 Ribosomal S6 kinase10301 basic medicineMAPK/ERK pathwayAgingHPLC High-performance liquid chromatographyAntioxidantmedicine.medical_treatmentTBP TATA-binding proteinClinical BiochemistryDEN Diethyl nitrosamine;MKP-1 MAPK phosphatase-1IκB kinaseGCLc Glutamate cysteine ligase catalytic subunitp38 Mitogen-Activated Protein KinasesG6PDH Glucose-6-phosphate dehydrogenaseBiochemistryAntioxidantsMicechemistry.chemical_compoundSuperoxide Dismutase-1Akt Protein kinase B0302 clinical medicineNrf2 Nuclear factor erythroid 2-related factor-2IL InterleukinSOD1 Cu/Zn-superoxide dismutaselcsh:QH301-705.5Mice KnockoutMK2 MAP-activated protein kinase 2;PGC-1α Peroxisome proliferator-activated receptor gamma coactivator 1-alphachemistry.chemical_classificationlcsh:R5-920Trx ThioredoxinGlutathione DisulfideTNF-α Tumor necrosis factor-alphabiologyLPS Lipopolysaccharide;GSSG Oxidized glutathione;MEF Mouse embryonic fibroblastsNF-kappa BGstm1 Glutathione S-transferase mu 1CatalaseEndoplasmic Reticulum StressGlutathioneLiverGSH Reduced glutathione;Catalase030220 oncology & carcinogenesisJNK c-Jun N-terminal kinaselcsh:Medicine (General)Research Papermedicine.medical_specialtyNF-E2-Related Factor 2Glutamate-Cysteine LigaseMKK MAPK kinaseAP-1 Activator protein-1IKK IƙB KinaseGene Expression Regulation EnzymologicSuperoxide dismutase03 medical and health sciencesInternal medicineGlutamate cysteine ligaseEGFR Epidermal growth factor receptormedicineAnimalsNuclear factor ƙBAnd catalaseChIP Chromatin immunoprecipitation;Protein kinase BNF-ƙB Nuclear factor kappa BSuperoxide DismutaseSuperoxide dismutase 1Superoxide dismutase 2Organic ChemistryGlutathioneASK1 Apoptosis signal-regulating kinase 1ATF2 activating transcription factor 2;030104 developmental biologyEndocrinologyEnzymeHsp Heat shock proteinlcsh:Biology (General)chemistrybiology.proteinSOD2 Mn-superoxide dismutaseMAPK mitogen activated protein kinaseNEM N-ethyl maleimide;Redox Biology
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