Search results for "Intracellular Signaling Peptides and Proteins"

showing 10 items of 140 documents

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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Humanin: A mitochondria-derived peptide with emerging properties.

2020

AgingPeptideApoptosisMitochondrionDNA MitochondrialMitochondrial Proteinschemistry.chemical_compoundMedicineHumansInsulinProtein IsoformsAmino AcidsReceptors LipoxinReceptorHumaninchemistry.chemical_classificationbusiness.industryLipoxin metabolismIntracellular Signaling Peptides and ProteinsReceptors Formyl PeptideAmino acidMitochondriachemistryBiochemistryApoptosisCardiology and Cardiovascular MedicinebusinessEnergy MetabolismDNABiomarkersCiliary Neurotrophic Factor Receptor alpha SubunitAnnales de cardiologie et d'angeiologie
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Agonist potency differentiates G protein activation and Ca2+ signalling by the orexin receptor type 1.

2005

The G protein coupling characteristics of a flag epitope-tagged orexin receptor type 1 (OX1R) was investigated in HEK293 cells. Immunoprecipitation of the OX1R and immunoblotting revealed interactions with Gq/G11 proteins as well as with Gs and Gi proteins. Stimulation with orexin-A did not affect the ability of the OX1R to coprecipitate Gq/G11 proteins, but it robustly elevated the intracellular concentration of Ca2+, [Ca2+]i. No changes in cAMP levels could be detected upon receptor stimulation. To get further insight into the functional correlation of G protein activation and Ca2+ signalling, we used baculovirus transduction to express chimeric G proteins, containing the Galphas protein …

AgonistReceptors Neuropeptidemedicine.drug_classG proteinBiologyKidneyBiochemistryCell LineReceptors G-Protein-CoupledGTP-binding protein regulatorsGTP-Binding ProteinsOrexin ReceptorsTransduction GeneticMuscarinic acetylcholine receptormedicineCyclic AMPHumansCalcium SignalingPharmacologyReceptor Muscarinic M3Neurotransmitter AgentsOrexinsDose-Response Relationship DrugNeuropeptidesIntracellular Signaling Peptides and ProteinsMuscarinic acetylcholine receptor M3Fusion proteinOrexin receptorCell biologyBiochemistryCalciumSignal transductionBaculoviridaeSignal TransductionBiochemical pharmacology
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Common genetic denominators for Ca++-based skeleton in Metazoa: role of osteoclast-stimulating factor and of carbonic anhydrase in a calcareous spong…

2012

Calcium-based matrices serve predominantly as inorganic, hard skeletal systems in Metazoa from calcareous sponges [phylum Porifera; class Calcarea] to proto- and deuterostomian multicellular animals. The calcareous sponges form their skeletal elements, the spicules, from amorphous calcium carbonate (ACC). Treatment of spicules from Sycon raphanus with sodium hypochlorite (NaOCl) results in the disintegration of the ACC in those skeletal elements. Until now a distinct protein/enzyme involved in ACC metabolism could not been identified in those animals. We applied the technique of phage display combinatorial libraries to identify oligopeptides that bind to NaOCl-treated spicules: those oligop…

Anatomy and PhysiologyMarine and Aquatic Scienceslcsh:MedicineBiochemistryCalcium Chloridechemistry.chemical_compoundMolecular Cell BiologySycon raphanuslcsh:ScienceCarbonic AnhydrasesSclerocytechemistry.chemical_classification0303 health sciencesMultidisciplinaryCalcareous spongebiology030302 biochemistry & molecular biologyIntracellular Signaling Peptides and ProteinsRecombinant ProteinsAmorphous calcium carbonatePoriferaEnzymesChemistrymedicine.anatomical_structureBiochemistryMedicineOligopeptidesResearch ArticleBiotechnologyDNA ComplementaryMolecular Sequence DataMarine BiologyCalcium Carbonate03 medical and health sciencesSponge spiculeOsteoclastCarbonic anhydraseChemical BiologymedicineAnimalsAmino Acid SequenceBiology030304 developmental biologySequence Homology Amino AcidEvolutionary Developmental Biologylcsh:Rbiology.organism_classificationEnzymechemistryEarth Sciencesbiology.proteinCalciumlcsh:QPeptidesPhysiological ProcessesDevelopmental BiologyPLoS ONE
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Amyloid-β toxicity and tau hyperphosphorylation are linked via RCAN1 in Alzheimer's disease.

2011

Amyloid-β peptide (Aβ) toxicity and tau hyperphosphorylation are hallmarks of Alzheimer’s disease (AD). How their molecular relationships may affect the etiology, progression, and severity of the disease, however, has not been elucidated. We now report that incubation of foetal rat cortical neurons with Aβ up-regulates expression of the Regulator of Calcineurin gene RCAN1, and this is mediated by Aβ-induced oxidative stress. Calcineurin (PPP3CA) is a serine-threonine phosphatase that dephosphorylates tau. RCAN1 proteins inhibit this phosphatase activity of calcineurin. Increased expression of RCAN1 also causes up-regulation of glycogen synthase kinase-3beta (GSK3β), a tau kinase. Thus, incr…

Apolipoprotein EAdultMuscle Proteinstau ProteinsBiologymedicine.disease_causeTransfectionArticleDephosphorylationGlycogen Synthase Kinase 3GSK-3Alzheimer DiseasemedicineAnimalsHumansLymphocytesPhosphorylationRNA Small InterferingGSK3BCells CulturedChromatography High Pressure LiquidRegulation of gene expressionCerebral CortexNeuronsAmyloid beta-PeptidesGlycogen Synthase Kinase 3 betaGeneral NeuroscienceCalcineurinIntracellular Signaling Peptides and ProteinsGeneral MedicineMiddle Agedmedicine.diseaseEmbryo MammalianMolecular biologyGlutathionePeptide FragmentsCell biologyRatsCalcineurinDNA-Binding ProteinsPsychiatry and Mental healthClinical PsychologyOxidative StressGene Expression RegulationFemaleGeriatrics and GerontologyAlzheimer's diseaseOxidative stressJournal of Alzheimer's disease : JAD
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Reduced VLDL clearance in ApoeNpc1 mice is associated with increased Pcsk9 and Idol expression and decreased hepatic LDL-receptor levels

2010

Niemann-Pick type C1 (NPC1) promotes the transport of LDL receptor (LDL-R)-derived cholesterol from late endosomes/lysosomes to other cellular compartments. NPC1-deficient cells showed impaired regulation of liver_X receptor (LXR) and sterol regulatory element-binding protein (SREBP) target genes. We observed that Apoe(-/-)Npc1(-/-) mice displayed a marked increase in total plasma cholesterol mainly due to increased VLDL, reflecting decreased clearance. Although nuclear SREBP-2 and Ldlr mRNA levels were increased in Apoe(-/-)Npc1(-/-) liver, LDL-R protein levels were decreased in association with marked induction of proprotein convertase subtilisin/kexin type 9 (Pcsk9) and inducible degrade…

Apolipoprotein EreceptorCholesterol VLDLLDL/metabolismMacrophages Peritoneal/cytologyBiochemistryMiceEndocrinologyhemic and lymphatic diseasesReceptorsOrphan Nuclear Receptors/geneticspolycyclic compoundsnuclear receptorCells CulturedResearch ArticlesLiver X ReceptorsMice KnockoutCulturedSterol Regulatory Element Binding Protein 2/geneticslipoproteinSerine EndopeptidasesIntracellular Signaling Peptides and ProteinsLamin Type AOrphan Nuclear ReceptorsTriglycerides/bloodCholesterolLiverProteins/geneticsKexinlipids (amino acids peptides and proteins)Proprotein ConvertasesProprotein Convertase 9Sterol Regulatory Element Binding Protein 1Niemann-Pick diseaseSterol Regulatory Element Binding Protein 2medicine.medical_specialtyCellsKnockoutUbiquitin-Protein LigasesReceptors LDL/metabolismSerine Endopeptidases/geneticsQD415-436BiologyCholesterol/blooddigestive systemApolipoproteins ELiver/physiologySterol Regulatory Element Binding Protein 1/geneticsNiemann-Pick C1 ProteinInternal medicinemedicineAnimalsPeritoneal/cytologyCholesterol VLDL/metabolismUbiquitin-Protein Ligases/geneticsLiver X receptorTriglyceridesMacrophagesPCSK9Proteinsnutritional and metabolic diseasesVLDL/metabolismLamin Type A/metabolismCell BiologySterol regulatory element-binding proteinEndocrinologyReceptors LDLLDL receptorMacrophages PeritonealSterol regulatory element-binding protein 2atherosclerosisApolipoproteins E/geneticsLipoproteinJournal of Lipid Research
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JAK3/STAT5/6 Pathway Alterations Are Associated with Immune Deviation in CD8+ T Cells in Renal Cell Carcinoma Patients

2010

To investigate the molecular mechanisms underlying altered T cell response in renal cell carcinoma (RCC) patients, we compared autologous and allogeneic CD8(+) T cell responses against RCC line from RCC patients and their HLA-matched donors, using mixed lymphocyte/tumor cell cultures (MLTCs). In addition, we analyzed the expression of molecules associated with cell cycle regulation. Autologous MLTC responder CD8(+) T cells showed cytotoxic activity against RCC cell lines; however the analysis of the distribution of CD8(+) T-cell subsets revealed that allogenic counterparts mediate superior antitumor efficacy. In RCC patients, a decreased proliferative response to tumor, associated with defe…

Article SubjectCell Survivallcsh:Biotechnologylcsh:MedicineEnzyme-Linked Immunosorbent AssayE2F4 Transcription FactorCD8-Positive T-Lymphocytesurologic and male genital diseaseslcsh:TP248.13-248.65Chromium IsotopesSTAT5 Transcription FactorTumor Cells CulturedHumansCarcinoma Renal CellInhibitor of Differentiation Protein 2Microscopy Confocallcsh:RCell CycleIntracellular Signaling Peptides and ProteinsJanus Kinase 3Flow Cytometryfemale genital diseases and pregnancy complicationsKidney NeoplasmsGene Expression Regulation NeoplasticCase-Control StudiesLymphocyte Culture Test MixedSTAT6 Transcription FactorCyclin-Dependent Kinase Inhibitor p27Research ArticleSignal TransductionJournal of Biomedicine and Biotechnology
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Pharmacological blockade of the fatty acid amide hydrolase (FAAH) alters neural proliferation, apoptosis and gliosis in the rat hippocampus, hypothal…

2015

Endocannabinoids participate in the control of neurogenesis, neural cell death and gliosis. The pharmacological effect of the fatty acid amide hydrolase (FAAH) inhibitor URB597, which limits the endocannabinoid degradation, was investigated in the present study. Cell proliferation (phospho-H3(+) or BrdU(+) cells) of the main adult neurogenic zones as well as apoptosis (cleaved caspase-3(+)), astroglia (GFAP(+)), and microglia (Iba1(+) cells) were analyzed in the hippocampus, hypothalamus and striatum of rats intraperitoneally treated with URB597 (0.3 mg/kg/day) at one dose/4-days resting or 5 doses (1 dose/day). Repeated URB597 treatment increased the plasma levels of the N-acylethanolamine…

AstrocitosNeurobiologia del desenvolupamentAmidohidrolasasCannabinoid receptorCarbamatos:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Intracellular Signaling Peptides and Proteins::Apoptosis Regulatory Proteins::Caspases [Medical Subject Headings]:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Differentiation::Neurogenesis [Medical Subject Headings]medicine.medical_treatment:Chemicals and Drugs::Carbohydrates::Monosaccharides::Hexoses::Glucose [Medical Subject Headings]Apoptosis:Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Body Weight [Medical Subject Headings]chemistry.chemical_compound:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Membrane Proteins::Receptors Cell Surface::Receptors G-Protein-Coupled::Receptors Cannabinoid::Receptor Cannabinoid CB1 [Medical Subject Headings]0302 clinical medicine:Chemicals and Drugs::Organic Chemicals::Carboxylic Acids::Acids Acyclic::Carbamates [Medical Subject Headings]Fatty acid amide hydrolaseReceptor cannabinoide CB1:Organisms::Eukaryota::Animals [Medical Subject Headings]FAAHGliosishealth care economics and organizations:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleosides::Deoxyribonucleosides::Deoxyuridine::Bromodeoxyuridine [Medical Subject Headings]:Chemicals and Drugs::Lipids::Glycerides::Triglycerides [Medical Subject Headings]Original Research0303 health sciencesNeurogenesisBenzamidas:Chemicals and Drugs::Polycyclic Compounds::Steroids::Cholestanes::Cholestenes::Cholesterol [Medical Subject Headings]Endocannabinoid systemEtanolaminas3. Good healthEndocannabinoides:Chemicals and Drugs::Lipids::Fatty Acids::Fatty Acids Unsaturated::Fatty Acids Monounsaturated::Oleic Acids [Medical Subject Headings]CannabinoidesMicroglíalipids (amino acids peptides and proteins)medicine.symptomColesterol:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Terpenes::Cannabinoids [Medical Subject Headings]:Chemicals and Drugs::Lipids::Fatty Acids::Palmitic Acids [Medical Subject Headings]psychological phenomena and processesProliferación celularmedicine.medical_specialtyCerebroNeurogenesiseducationBiologyBromodesoxiuridina:Anatomy::Nervous System::Neuroglia::Microglia [Medical Subject Headings]Triglicéridoslcsh:RC321-571Ácidos oléicosRatas03 medical and health sciencesCellular and Molecular NeuroscienceInternal medicineHipocampomedicineCaspasa 3:Anatomy::Nervous System::Central Nervous System::Brain::Limbic System::Hippocampus [Medical Subject Headings]:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Growth Processes::Cell Proliferation [Medical Subject Headings]lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry030304 developmental biologyPalmitoylethanolamide:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Molecular Mechanisms of Pharmacological Action::Neurotransmitter Agents::Endocannabinoids [Medical Subject Headings]:Chemicals and Drugs::Enzymes and Coenzymes::Enzymes::Hydrolases::Amidohydrolases [Medical Subject Headings]Cannabinoids:Anatomy::Cells::Neuroglia::Astrocytes [Medical Subject Headings]Peso corporalEnergy metabolism:Anatomy::Nervous System::Central Nervous System::Brain [Medical Subject Headings]:Anatomy::Nervous System::Central Nervous System::Brain::Limbic System::Hypothalamus [Medical Subject Headings]URB597:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Death [Medical Subject Headings]:Diseases::Pathological Conditions Signs and Symptoms::Pathologic Processes::Gliosis [Medical Subject Headings]:Chemicals and Drugs::Organic Chemicals::Amines::Amino Alcohols::Ethanolamines [Medical Subject Headings]Muerte celular:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Death::Apoptosis [Medical Subject Headings]:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Rodentia::Muridae::Murinae::Rats [Medical Subject Headings]EndocrinologyURB597chemistryGliosisnervous systemGlucosaCannabinoidEnergy Metabolism:Chemicals and Drugs::Organic Chemicals::Amides::Benzamides [Medical Subject Headings]HipotálamoÁcidos palmíticos030217 neurology & neurosurgeryNeuroscienceFrontiers in Cellular Neuroscience
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De novo design of protein kinase inhibitors by in silico identification of hinge region-binding fragments.

2013

Protein kinases constitute an attractive family of enzyme targets with high relevance to cell and disease biology. Small molecule inhibitors are powerful tools to dissect and elucidate the function of kinases in chemical biology research and to serve as potential starting points for drug discovery. However, the discovery and development of novel inhibitors remains challenging. Here, we describe a structure-based de novo design approach that generates novel, hinge-binding fragments that are synthetically feasible and can be elaborated to small molecule libraries. Starting from commercially available compounds, core fragments were extracted, filtered for pharmacophoric properties compatible w…

Binding SitesMolecular StructureProtein ConformationIntracellular Signaling Peptides and ProteinsArticlesProtein Serine-Threonine KinasesCrystallography X-RayMAP Kinase Kinase KinasesImmediate-Early ProteinsCSK Tyrosine-Protein KinaseMolecular Docking SimulationSmall Molecule Librariessrc-Family KinasesDrug DesignComputer SimulationProtein Kinase InhibitorsACS chemical biology
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Recessive mutations in EPG5 cause Vici syndrome, a multisystem disorder with defective autophagy

2013

Vici syndrome is a recessively inherited multisystem disorder characterized by callosal agenesis, cataracts, cardiomyopathy, combined immunodeficiency and hypopigmentation. To investigate the molecular basis of Vici syndrome, we carried out exome and Sanger sequence analysis in a cohort of 18 affected individuals. We identified recessive mutations in EPG5 (previously KIAA1632), indicating a causative role in Vici syndrome. EPG5 is the human homolog of the metazoan-specific autophagy gene epg-5, encoding a key autophagy regulator (ectopic P-granules autophagy protein 5) implicated in the formation of autolysosomes. Further studies showed a severe block in autophagosomal clearance in muscle a…

BiopsyVesicular Transport ProteinsAutophagy-Related ProteinsGenes RecessiveConsanguinityBiologymedicine.disease_causeArticleCataract03 medical and health sciencesConsanguinity0302 clinical medicineCataractsAntigens NeoplasmGeneticsmedicineAutophagyHumansVici syndromeExomeFamilyMuscle SkeletalExomeImmunodeficiency030304 developmental biologyGenetics0303 health sciencesMutationAutophagyIntracellular Signaling Peptides and ProteinsLysosome-Associated Membrane GlycoproteinsProteinsmedicine.diseaseMutationAutophagy Protein 5Agenesis of Corpus CallosumLysosomes030217 neurology & neurosurgeryNature genetics
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