Search results for "Stromal Interaction Molecule 1"

showing 5 items of 5 documents

Cell mechanisms of gustatory lipids perception and modulation of the dietary fat preference.

2014

Dietary lipids are usually responsible of several metabolic disorders. Recent compelling evidences suggest that there is a sixth taste modality, destined for the detection of oro-gustatory fats. The lipid-binding glycoprotein CD36, expressed by circumvallate papillae (CVP) of the mouse tongue, has been shown to be implicated in oro-gustatory perception of dietary lipids. We demonstrate that linoleic acid (LA) by activating sPLA2, cPLA2 and iPLA2 via CD36, produced arachidonic acid (AA) and lyso-phosphatidylcholine (Lyso-PC) which triggered Ca(2+) influx in CD36-positive taste bud cells (TBC), purified from mouse CVP. LA induced the production of Ca(2+) influx factor (CIF). CIF, AA and Lyso-…

CD36 AntigensTasteCD36Linoleic acidBiochemistryModels Biologicalchemistry.chemical_compoundFood PreferencesAnimalsHumansStromal Interaction Molecule 1Calcium signalingbiologyORAI1Endoplasmic reticulumMembrane ProteinsTaste PerceptionSTIM1General MedicineTaste BudsDietary FatsCell biologyNeoplasm ProteinschemistryBiochemistrybiology.proteinArachidonic acidCalciumBiochimie
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The plasma membrane channel ORAI1 mediates detrimental calcium influx caused by endogenous oxidative stress.

2013

The mouse hippocampal cell line HT22 is an excellent model for studying the consequences of endogenous oxidative stress. Addition of extracellular glutamate depletes the cells of glutathione (GSH) by blocking the glutamate-cystine antiporter system x(c)(-). GSH is the main antioxidant in neurons and its depletion induces a well-defined program of cell death called oxytosis, which is probably synonymous with the iron-dependent form of non-apoptotic cell death termed ferroptosis. Oxytosis is characterized by an increase of reactive oxygen species and a strong calcium influx preceding cell death. We found a significant reduction in store-operated calcium entry (SOCE) in glutamate-resistant HT2…

Cancer ResearchProgrammed cell deathORAI1 ProteinSTIM1AntiporterImmunologychemistry.chemical_elementApoptosisCalciumBiologymedicine.disease_causeAntioxidantsCell LineCellular and Molecular Neurosciencechemistry.chemical_compoundMicemedicineAnimalsStromal Interaction Molecule 1RNA Small InterferingStromal Interaction Molecule 2Calcium metabolismMembrane GlycoproteinsORAI1Cell MembraneCell BiologySTIM2GlutathioneGlutathioneCell biologyOxidative StresschemistryCalciumOriginal ArticleCalcium ChannelsReactive Oxygen SpeciesOxidative stressSOCECell deathdisease
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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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Junctophilin-1 is a modifier gene of GDAP1-related Charcot-Marie-Tooth disease.

2014

Mutations in the GDAP1 gene cause different forms of Charcot-Marie-Tooth (CMT) disease, and the primary clinical expression of this disease is markedly variable in the dominant inheritance form (CMT type 2K; CMT2K), in which carriers of the GDAP1 p.R120W mutation can display a wide range of clinical severity. We investigated the JPH1 gene as a genetic modifier of clinical expression variability because junctophilin-1 (JPH1) is a good positional and functional candidate. We demonstrated that the JPH1-GDAP1 cluster forms a paralogon and is conserved in vertebrates. Moreover, both proteins play a role in Ca(2+) homeostasis, and we demonstrated that JPH1 is able to restore the store-operated Ca…

Nerve Tissue ProteinsDiseaseMitochondrionBiologyCell LineEvolution MolecularMiceCharcot-Marie-Tooth DiseaseGeneticsAnimalsHumansGenetic Predisposition to DiseaseStromal Interaction Molecule 1Molecular BiologyGeneGenetics (clinical)PhylogenyGenes ModifierActivator (genetics)Endoplasmic reticulumMembrane ProteinsSTIM1General MedicinePhenotypeMolecular biologyMitochondriaNeoplasm ProteinsMutationCalciumHomeostasisHuman molecular genetics
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Stromal Interaction Molecule 1 (STIM1) Is Involved in the Regulation of Mitochondrial Shape and Bioenergetics and Plays a Role in Oxidative Stress

2012

Calcium ions are involved in a plethora of cellular functions including cell death and mitochondrial energy metabolism. Store-operated Ca(2+) entry over the plasma membrane is activated by depletion of intracellular Ca(2+) stores and is mediated by the sensor STIM1 and the channel ORAI1. We compared cell death susceptibility to oxidative stress in STIM1 knock-out and ORAI1 knockdown mouse embryonic fibroblasts and in knock-out cells with reconstituted wild type and dominant active STIM1. We show that STIM1 and ORAI1 deficiency renders cells more susceptible to oxidative stress, which can be rescued by STIM1 and ORAI1 overexpression. STIM1 knock-out mitochondria are tubular, have a higher Ca…

inorganic chemicalsProgrammed cell deathORAI1 ProteinEukaryotic Initiation Factor-2Active Transport Cell NucleusApoptosisMitochondrionBiologymedicine.disease_causeBiochemistryMiceeIF-2 KinasemedicineAnimalsStromal Interaction Molecule 1PhosphorylationMolecular BiologyTranscription factorCells CulturedMice KnockoutEIF-2 kinaseMembrane GlycoproteinsEndoplasmic reticulumMolecular Bases of DiseaseSTIM1Cell BiologyFibroblastsEmbryo MammalianMitochondriaCell biologyOxidative Stressbiology.proteinCalciumCalcium ChannelsEnergy MetabolismIntracellularOxidative stressJournal of Biological Chemistry
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