Search results for " MAPK"

showing 10 items of 27 documents

Cigarette Smoke Extract Induces p38 MAPK-Initiated, Fas-Mediated Eryptosis

2022

Eryptosis is a physiological mechanism for the clearance of senescent or damaged erythrocytes by phagocytes. Excessive eryptosis is stimulated under several pathologies and associated with endothelial injury and thrombosis. Cigarette smoke (CS) is an established risk factor for vascular diseases and cigarette smokers have high-levels of eryptotic erythrocytes. This study, for the first time, investigates the mechanism by which CS damages red blood cells (RBCs). CS extract (CSE) from commercial cigarettes was prepared and standardized for nicotine content. Cytofluorimetric analysis demonstrated that treatment of human RBCs with CSE caused dose-dependent, phosphatidylserine externalization an…

Caspase 8ErythrocytesCaspase 3cigarette smokeOrganic ChemistryGeneral Medicinep38 MAPKCeramidesp38 Mitogen-Activated Protein KinasesCatalysisComputer Science ApplicationsInorganic Chemistryeryptosis; cigarette smoke; death-inducing signaling complex (DISC); p38 MAPK; ceramide; caspasescaspasesSmokeeryptosisSettore BIO/10 - BiochimicaTobaccodeath-inducing signaling complex (DISC)HumansceramidePhysical and Theoretical ChemistryReactive Oxygen SpeciesMolecular BiologySpectroscopy

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Early asymmetric cues triggering the dorsal/ventral gene regulatory network of the sea urchin embryo

2014

Dorsal/ventral (DV) patterning of the sea urchin embryo relies on a ventrally-localized organizer expressing Nodal, a pivotal regulator of the DV gene regulatory network. However, the inceptive mechanisms imposing the symmetry-breaking are incompletely understood. In Paracentrotus lividus, the Hbox12 homeodomain-containing repressor is expressed by prospective dorsal cells, spatially facing and preceding the onset of nodal transcription. We report that Hbox12 misexpression provokes DV abnormalities, attenuating nodal and nodal-dependent transcription. Reciprocally, impairing hbox12 function disrupts DV polarity by allowing ectopic expression of nodal. Clonal loss-of-function, inflicted by b…

Embryo NonmammalianTranscription GeneticEctodermp38 Mitogen-Activated Protein Kinasessymmetry breakingdorsal ventral axis sea urchin embryo nodal homeodomain repressor p38 MAPKAnimals Genetically ModifiedCell polarityMorphogenesisGene Regulatory NetworksBiology (General)ZebrafishSea urchinsea urchin embryoGeneticsbiologyGeneral NeuroscienceQRdorsal/ventral polarityCell PolarityGene Expression Regulation DevelopmentalEmbryoGeneral MedicineCell biologymedicine.anatomical_structureGene Knockdown Techniquesembryonic structuresParacentrotusMedicineCuesResearch Articleanimal structuresQH301-705.5Nodal ProteinScienceEmbryonic DevelopmentSettore BIO/11 - Biologia Molecolarep38 MAPKModels BiologicalGeneral Biochemistry Genetics and Molecular Biologybiology.animalEctodermmedicineAnimalsBody PatterningHomeodomain ProteinsGeneral Immunology and MicrobiologyotherCell Biologybiology.organism_classificationEmbryonic stem cellhomeodomain repressorRepressor ProteinsDevelopmental Biology and Stem CellsnodalNODALDevelopmental biologyeLife

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Effects of two organotin(IV)(sulfonato phenyl)porphynates on the MAPKs and on the growth of A375 human melanoma cells

2009

Previously we showed apoptotic induction in A375 human melanoma cells using two complexes of the meso-tetra(4-sulfonatophenyl)porphinate (TPPS), (Bu 2 Sn) 2 TPPS and (Bu 3 Sn) 4 TPPS. To understand how these compounds activate apoptosis in melanoma cells we studied MAPKs and the (Bu 2 Sn) 2 TPPS and (Bu 3 Sn) 4 TPPS cellular uptake. Western blotting experiments showed activated protein kinases ERK 1/2, JNK and p38 in 10 μM (Bu 2 Sn) 2 TPPS- and 1 μM (Bu 3 Sn) 4 TPPS-treated melanoma cells, which suggests that the three MAP kinases are involved in the apoptotic death of A375-treated cells. By taking advantage of the porphyrin fluorescence, we found a fast concentration of (Bu 2 Sn) 2 TPPS an…

MAPK/ERK pathwayCancer ResearchPorphyrinsp38 mitogen-activated protein kinasesBlotting WesternAntineoplastic AgentsApoptosischemistry.chemical_compoundCell Line TumorOrganotin CompoundsHumansMelanomaCell ProliferationbiologyKinaseCell growthGeneral MedicineA375 melamoma cells meso-tetra(4-sulfonato phenyl)porphinate MAPKs FAK cell growthMolecular biologyPorphyrinIn vitroMicroscopy Fluorescence MultiphotonOncologyBiochemistrychemistryApoptosisSettore CHIM/03 - Chimica Generale E InorganicaMitogen-activated protein kinasebiology.proteinMitogen-Activated Protein Kinases

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Manganese overload affects p38 MAPK phosphorylation and metalloproteinase activity during sea urchin embryonic development.

2014

Abstract In the marine environment, manganese represents a potential emerging contaminant, resulting from an increased production of manganese-containing compounds. In earlier reports we found that the exposure of Paracentrotus lividus sea urchin embryos to manganese produced phenotypes with no skeleton. In addition, manganese interfered with calcium uptake, perturbed extracellular signal-regulated kinase (ERK) signaling, affected the expression of skeletogenic genes, and caused an increase of the hsc70 and hsc60 protein levels. Here, we extended our studies focusing on the temporal activation of the p38 mitogen-activated protein kinase (p38 MAPK) and the proteolytic activity of metalloprot…

MAPK/ERK pathwayEmbryo NonmammalianAquatic ScienceBiologyMatrix metalloproteinaseOceanographyp38 Mitogen-Activated Protein KinasesParacentrotus lividusbiology.animalECM ERK Embryo-toxicity Immunoblotting MAPK MMPs Marine organisms' calcification Mn SDS-PAGE Zymography extracellular matrix extracellular signal-regulated kinase manganese metalloproteinases mitogen-activated protein kinase p38 MAPK sodium dodecyl sulfate-polyacrylamide gel electrophoresisAnimalsSettore BIO/06 - Anatomia Comparata E CitologiaPhosphorylationProtein kinase ASea urchinManganeseKinaseGeneral Medicinebiology.organism_classificationPollutionMatrix MetalloproteinasesBiochemistryMitogen-activated protein kinasebiology.proteinParacentrotusPhosphorylationWater Pollutants ChemicalMarine environmental research

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Mitochondrial dynamics in type 2 diabetes: Pathophysiological implications

2017

Mitochondria play a key role in maintaining cellular metabolic homeostasis. These organelles have a high plasticity and are involved in dynamic processes such as mitochondrial fusion and fission, mitophagy and mitochondrial biogenesis. Type 2 diabetes is characterised by mitochondrial dysfunction, high production of reactive oxygen species (ROS) and low levels of ATP. Mitochondrial fusion is modulated by different proteins, including mitofusin-1 (MFN1), mitofusin-2 (MFN2) and optic atrophy (OPA-1), while fission is controlled by mitochondrial fission 1 (FIS1), dynamin-related protein 1 (DRP1) and mitochondrial fission factor (MFF). PARKIN and (PTEN)-induced putative kinase 1 (PINK1) partici…

MiD51 mitochondrial dynamics proteins of 51 kDaΔΨm mitochondrial membrane potential0301 basic medicineMitochondrial fission factorClinical BiochemistryMitochondrial DegradationMFN2Review ArticleTXNIP thioredoxin interacting proteinMitochondrial DynamicsBiochemistryAdenosine TriphosphateGRP78 78 kDa glucose-regulated proteinMFF mitochondrial fission factorMFN2 mitofusin 2TRX2 thioredoxin 2Redox biologylcsh:QH301-705.5NF-κB nuclear factor kappa Blcsh:R5-920MitophagyType 2 diabetesDRP1 dynamin-related protein 1FIS1 fission protein 1BNIP3 BCL2/adenovirus E1B 19 kDa interacting protein 3MitochondriaOPA1 optic atrophy 1SIRT1/3 sirtuin 1/3Biochemistrymitochondrial fusionTGF-β1 transforming growth factor-β1Mitochondrial fissionOMM outer mitochondrial membranelcsh:Medicine (General)MiD49 mitochondrial dynamics proteins of 49Nox 4 NADPH oxidase-4IMM inner mitochondrial membraneFIS1ATF6 activating transcription factor 6PINK1mTOR mammalian target of rapamycinCHOP C/EBP homologous proteinBiologymdivi-1 mitochondrial division inhibitor-1Mitochondrial Proteins03 medical and health sciencesROS reactive oxygen speciessXBP1 spliced X-box binding protein 1UCP-1 uncoupling protein-1MFN1 mitofusin 1SOD superoxide dismutaseLC3 1 A/1B-light chain 3HumansPINK1 (PTEN)-induced putative kinase 1S3 15-OxospiramilactoneOrganic ChemistrymtDNA mitochondrial DNAAMPK AMP-activated protein kinase030104 developmental biologyDiabetes Mellitus Type 2Mitochondrial biogenesislcsh:Biology (General)Oxidative stressp38 MAPK p38 mitogen-activated protein kinasep62/SQSTM1 ubiquitin and sequestosome-1Reactive Oxygen SpeciesRedox Biology

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Polymorphisms within the TNFSF4 and mapkapk2 loci influence the risk of developing invasive aspergillosis: A two-stage case control study in the cont…

2020

Here, we assessed whether 36 single nucleotide polymorphisms (SNPs) within the TNFSF4 and MAPKAPK2 loci influence the risk of developing invasive aspergillosis (IA). We conducted a twostage case control study including 911 high-risk patients diagnosed with hematological malignancies that were ascertained through the aspBIOmics consortium. The meta-analysis of the discovery and replication populations revealed that carriers of the TNFSF4rs7526628T/T genotype had a significantly increased risk of developing IA (p = 0.00022). We also found that carriers of the TNFSF4rs7526628T allele showed decreased serum levels of TNFSF14 protein (p = 0.0027), and that their macrophages had a decreased fungi…

Microbiology (medical)Thymic stromal lymphopoietinCiências Médicas::Ciências da Saúde:Ciências da Saúde [Ciências Médicas]lnfectious Diseases and Global Health Radboud Institute for Molecular Life Sciences [Radboudumc 4]Context (language use)Single-nucleotide polymorphismPlant ScienceCD38BiologyMonocytes03 medical and health sciencesAll institutes and research themes of the Radboud University Medical Center0302 clinical medicineGenotypeB cells; MAPKAPK2; TNFSF14; TNFSF4; TSLP; genetic susceptibility; invasive aspergillosis; monocytes; serum biomarkersB cells; Genetic susceptibility; Invasive aspergillosis; MAPKAPK2; Monocytes; Serum biomarkers; TNFSF14; TNFSF4; TSLPGenetic predispositionGenetic susceptibilityddc:610Allelelcsh:QH301-705.5Ecology Evolution Behavior and Systematics030304 developmental biology0303 health sciencesB cellsTNFSF14Science & TechnologyTNFSF4Case-control studyMAPKAPK2Serum biomarkersTNFSF43. Good healthSettore MED/15 - MALATTIE DEL SANGUEMAPKAPK2lcsh:Biology (General)TSLPImmunologyInvasive aspergillosis030215 immunology

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Redox signaling in acute pancreatitis

2015

Acute pancreatitis is an inflammatory process of the pancreatic gland that eventually may lead to a severe systemic inflammatory response. A key event in pancreatic damage is the intracellular activation of NF-κB and zymogens, involving also calcium, cathepsins, pH disorders, autophagy, and cell death, particularly necrosis. This review focuses on the new role of redox signaling in acute pancreatitis. Oxidative stress and redox status are involved in the onset of acute pancreatitis and also in the development of the systemic inflammatory response, being glutathione depletion, xanthine oxidase activation, and thiol oxidation in proteins critical features of the disease in the pancreas. On th…

NecrosisGSH reduced glutathioneSTAT3 signal transducer and activator of transcription 3ERK extracellular signal-regulated kinasesClinical BiochemistryCCK cholecystokininTRAFs TNF receptor associated factorsReview ArticleIκB kinasePharmacologymedicine.disease_causeBiochemistrySHP small heterodimer partnerSTIM1 stromal interaction molecule 1chemistry.chemical_compoundHATs histone acetyltransferasesMedicineASK1GCL glutamate cysteine ligaseTNF-α tumor necrosis factor alphaIKK IκB kinaseNOS nitric oxide synthaseAcute inflammationHIF hypoxia inducible factorlcsh:QH301-705.5NF-κB nuclear factor kappa BDAMPs damage-associated molecular pattern moleculeslcsh:R5-920biologyGSSG oxidized glutathioneNF-kappa BNLRs nucleotide-binding oligomerization domain (NOD) like receptorsTRADD tumor necrosis factor receptor type 1-associated DEATH domain proteinTRPC3 transient receptor potential channel 3VEGF vascular endothelial growth factorGlutathioneTNFR tumor necrosis factor receptorHMGB1 high-mobility group Box 1 proteinIP3R inositol 145-trisphosphate receptor type 3VCAM-1 Vascular Cell adhesion protein 1Acute DiseaseJNK c-Jun N-terminal kinaseAcute pancreatitisTLRs toll-like receptorsmedicine.symptomlcsh:Medicine (General)Oxidation-ReductionAP-1 activator protein-1Signal TransductionmRNA messenger ribonucleic acidHMGB1ASC apoptosis-associated speck-like protein containing a carboxy-terminal CARDRNS reactive nitrogen speciesPTPs protein tyrosine phosphatasesROS reactive oxygen speciesNADH nicotinamide adenine dinucleotidepHe extracellular pHFAEE fatty acid ethyl estersAP acute pancreatitisHumansXanthine oxidaseCBP CREB-binding proteinRyR endoplasmic reticulum membrane ryanodine receptorsMDA malondialdehydeNO nitric oxideXO xanthine oxidaseASK1 apoptosis signal-regulating kinase-1business.industryOrganic ChemistryAutophagyNADPH nicotinamide adenine dinucleotide phosphateHDACs histone deacetylasesmedicine.diseaseCARS compensatory anti-inflammatory response syndromeXDH xanthine dehydrogenaseIL interleukinIκB inhibitor of kappa BAcute pancreatitisETC Electron transport chainPancreatitisMKPs MAPK phosphatasesSAP severe acute pancreatitischemistrylcsh:Biology (General)DTT dithiothreitolOxidative stressNAC N-acetyl cysteineImmunologybiology.proteinCalciumLysosomesReactive Oxygen SpeciesbusinessMAPK mitogen-activated protein kinaseOxidative stressERCP endoscopic retrograde cholangiopancreatographyRedox Biology

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L-selectin regulates human neutrophil transendothelial migration

2021

ABSTRACT The migration of circulating neutrophils towards damaged or infected tissue is absolutely critical to the inflammatory response. L-selectin is a cell adhesion molecule abundantly expressed on circulating neutrophils. For over two decades, neutrophil L-selectin has been assigned the exclusive role of supporting tethering and rolling – the initial stages of the multi-step adhesion cascade. Here, we provide direct evidence for L-selectin contributing to neutrophil transendothelial migration (TEM). We show that L-selectin co-clusters with PECAM-1 – a well-characterised cell adhesion molecule involved in regulating neutrophil TEM. This co-clustering behaviour occurs specifically during …

NeutrophilsPECAM-1p38 mitogen-activated protein kinases137p38 MAPKBiologymedicine.disease_cause03 medical and health sciences0302 clinical medicineCell MovementCell AdhesionmedicineHumansL-Selectin030304 developmental biology0303 health sciencesMutationCell adhesion moleculeTransendothelial and Transepithelial MigrationCell BiologyAdhesion129Cell biologyDiapedesisEctodomainCytoplasmTransmigrationbiology.proteinTumor necrosis factor alphaL-selectinEndothelium VascularJNKResearch Article030215 immunologyJournal of Cell Science

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Phospho-p38 MAPK expression in COPD patients and asthmatics and in challenged bronchial epithelium

2015

Background: The role of mitogen-activated protein kinases (MAPK) in regulating the inflammatory response in the airways of patients with chronic obstructive pulmonary disease (COPD) and asthmatic patients is unclear. Objectives: To investigate the expression of activated MAPK in lungs of COPD patients and in bronchial biopsies of asthmatic patients and to study MAPK expression in bronchial epithelial cells in response to oxidative and inflammatory stimuli. Methods: Immunohistochemical expression of phospho (p)-p38 MAPK, p-JNK1 and p-ERK1/2 was measured in bronchial mucosa in pat…

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Symmetry Breaking and Establishment of Dorsal/Ventral Polarity in the Early Sea Urchin Embryo

2015

The mechanisms imposing the Dorsal/Ventral (DV) polarity of the early sea urchin embryo consist of a combination of inherited maternal information and inductive interactions among blastomeres. Old and recent studies suggest that a key molecular landmark of DV polarization is the expression of nodal on the future ventral side, in apparent contrast with other metazoan embryos, where nodal is expressed dorsally. A subtle maternally-inherited redox anisotropy, plus some maternal factors such as SoxB1, Univin, and p38-MAPK have been identified as inputs driving the spatially asymmetric transcription of nodal. However, all the mentioned factors are broadly distributed in the embryo as early as no…

Physics and Astronomy (miscellaneous)General MathematicsRepressorNodalSettore BIO/11 - Biologia MolecolareBiologyp38 MAPKsymmetry breakingWntTranscription (biology)Computer Science (miscellaneous)dorsal/ventral axiGenePsychological repressionsea urchin embryodorsal/ventral axishypoxialcsh:Mathematicsdorsal/ventral axis; redox gradient; hypoxia; symmetry breaking; organizing centre; Nodal; Hbox12 transcription repressor; p38 MAPK; Wnt; sea urchin embryoWnt signaling pathwayEmbryoBlastomerelcsh:QA1-939Cell biologyorganizing centreChemistry (miscellaneous)Hbox12 transcription repressorredox gradientNODAL

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