Search results for " unfolded protein response"

showing 6 items of 6 documents

Targeting COPZ1 non-oncogene addiction counteracts the viability of thyroid tumor cells

2017

Abstract Thyroid carcinoma is generally associated with good prognosis, but no effective treatments are currently available for aggressive forms not cured by standard therapy. To find novel therapeutic targets for this tumor type, we had previously performed a siRNA-based functional screening to identify genes essential for sustaining the oncogenic phenotype of thyroid tumor cells, but not required to the same extent for the viability of normal cells (non-oncogene addiction paradigm). Among those, we found the coatomer protein complex ζ1 (COPZ1) gene, which is involved in intracellular traffic, autophagy and lipid homeostasis. In this paper, we investigated the mechanisms through which COPZ…

0301 basic medicineCancer ResearchTime FactorsCOPZ1ApoptosisCOPZ1Thyroid cancerThyroid NeoplasmThyroidRNAi TherapeuticCell death; COPZ1; Non-oncogene addiction; Thyroid carcinoma; Animals; Apoptosis; Autophagy; Cell Line Tumor; Cell Survival; Coatomer Protein; Endoplasmic Reticulum Stress; Female; Gene Expression Regulation Neoplastic; Humans; Mice Nude; RNA Interference; Signal Transduction; Thyroid Neoplasms; Time Factors; Transfection; Tumor Burden; Unfolded Protein Response; Xenograft Model Antitumor Assays; RNAi Therapeutics; Oncology; Cancer ResearchEndoplasmic Reticulum StressOncogene AddictionTumor BurdenGene Expression Regulation Neoplasticmedicine.anatomical_structureOncologyFemaleRNA InterferenceNon-oncogene addictionHumanSignal TransductionCell deathProgrammed cell deathXenograft Model Antitumor AssayTime FactorCell SurvivalMice NudeBiologyTransfectionCoatomer ProteinThyroid carcinomaThyroid carcinoma03 medical and health sciencesCell Line TumorAutophagymedicineAnimalsHumansThyroid NeoplasmsEndoplasmic Reticulum StreAnimalAutophagyApoptosimedicine.diseaseXenograft Model Antitumor AssaysRNAi Therapeutics030104 developmental biologyImmunologyUnfolded Protein ResponseCancer researchUnfolded protein response
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Mitochondrial oxidative injury: a key player in nonalcoholic fatty liver disease.

2020

Nonalcoholic fatty liver disease (NAFLD) has become the most prevalent liver disease worldwide. NAFLD is tightly linked to the metabolic syndrome, insulin resistance, and oxidative stress. Globally, its inflammatory form, nonalcoholic steatohepatitis (NASH), has become the main cause of liver-related morbidity and mortality, mainly due to liver cirrhosis and primary liver cancer. One hallmark of NASH is the presence of changes in mitochondrial morphology and function that are accompanied by a blocked flow of electrons in the respiratory chain, which increases formation of mitochondrial reactive oxygen species in a self-perpetuating vicious cycle. Consequences are oxidation of DNA bases and …

Liver Cirrhosismedicine.medical_specialtyMitochondrial DNAMitochondrial DiseasesPhysiologyMitochondrial TurnoverRespiratory chainBiologymedicine.disease_causedigestive system03 medical and health sciences0302 clinical medicineNon-alcoholic Fatty Liver DiseasePhysiology (medical)Internal medicineMitochondrial unfolded protein responseMitophagyNonalcoholic fatty liver diseasemedicineAnimalsHumans030304 developmental biology0303 health sciencesHepatologyGastroenterologynutritional and metabolic diseasesmedicine.diseasedigestive system diseases3. Good healthFatty LiverOxidative StressEndocrinologyMitochondrial biogenesis030211 gastroenterology & hepatologyOxidative stressAmerican journal of physiology. Gastrointestinal and liver physiology
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The cytoprotective protein MANF promotes neuronal survival independently from its role as a GRP78 cofactor

2021

Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER)-stress-regulated protein exhibiting cytoprotective properties through a poorly understood mechanism in various in vitro and in vivo models of neuronal and non-neuronal damage. Although initially characterized as a secreted neurotrophic factor for midbrain dopamine neurons, MANF has recently gained more interest for its intracellular role in regulating the ER homeostasis, including serving as a cofactor of the chaperone glucose-regulated protein 78 (GRP78). We aimed for a better understanding of the neuroprotective mechanisms of MANF. Here we show for the first time that MANF promotes the survival of …

0301 basic medicineBiFC bimolecular fluorescence complementationMST microscale thermophoresisPDIA1 protein disulfide isomerase family A member 1ApoptosisNEUROTROPHIC FACTOR MANFEndoplasmic ReticulumBiochemistryprotein-protein interactionMiceBimolecular fluorescence complementationUPR unfolded protein responseENDOPLASMIC-RETICULUM STRESSMesencephalonNeurotrophic factorsInsulin-Secreting CellsProtein Interaction MappingBINDINGCOMPREHENSIVE RESOURCEATF6unfolded protein response (UPR)PDIA6 protein disulfide isomerase family A member 6PPIs protein-protein interactionsEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsNPTN neuroplastinbiologyChemistryapoptosisunfolded protein responsedopamine neurons3. Good healthCell biologyGDNF glial cell line–derived neurotrophic factorIRE1-ALPHASBD substrate-binding domainendoplasmic reticulum stressMANF mesencephalic astrocyte-derived neurotrophic factorTm tunicamycinneuroprotectionResearch ArticleProtein BindingSignal TransductionGRP78Protein Disulfide-Isomerase FamilyCell SurvivalTH tyrosine hydroxylasePrimary Cell CultureSCG superior cervical ganglionProtein Disulfide-IsomerasesIRE1 inositol-requiring enzyme 1ER-STRESSER endoplasmic reticulum03 medical and health sciencesohjelmoitunut solukuolemaC-MANF C-terminal domain of MANFCSPs chemical shift perturbationsAnimalsHumansHSP70 Heat-Shock ProteinsNerve Growth FactorsNBD nucleotide-binding domainNMR nuclear magnetic resonanceMolecular Biology030102 biochemistry & molecular biologyBIPATF6Dopaminergic NeuronsGene Expression ProfilingBinding proteinneuronal cell deathDISSOCIATIONCell BiologyNEI nucleotide exchange inhibitorEmbryo MammalianadenosiinitrifosfaattiATPhermosolutmesencephalic astrocyte-derived neurotrophic factorprotein–protein interactionPERK protein kinase RNA-like ER kinaseHEK293 Cells030104 developmental biologyGene Expression RegulationChaperone (protein)Tg thapsigarginbiology.proteinUnfolded protein responseAP-MS affinity purification mass spectrometry1182 Biochemistry cell and molecular biologyGFP-SH SH-tagged GFPendoplasmic reticulum stress (ER stress)DA dopaminemesencephalic astrocyte-derived neurotrophic factor (MANF)proteiinitNeuroplastin
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Brief Report: Functional Interaction of Endoplasmic Reticulum Aminopeptidase 2 and HLA-B27 Activates the Unfolded Protein Response.

2017

Objective: The basic mechanisms underlying the pathogenesis of ankylosing spondylitis (AS) remain unresolved. We previously reported an association of the single-nucleotide polymorphism (SNP) rs2549782 in the endoplasmic reticulum aminopeptidase 2 gene (ERAP2) with AS. It is known that patients homozygous for the G allele (GG) of another ERAP2 SNP, rs2248374, lack expression of ERAP2 (ERAP2 null). The present study utilized this information to study the impact of ERAP2 deficiency on HLA–B27 expression in patients with AS, specifically focusing on the functional interaction of ERAP2 and HLA–B27 in peripheral blood mononuclear cells (PBMCs) from patients with AS and assessing the effects …

0301 basic medicineMaleX-Box Binding Protein 1Aminopeptidases0302 clinical medicineImmunology and AllergyRNA Small InterferingEndoplasmic Reticulum Chaperone BiPHLA-B27 AntigenHeat-Shock ProteinsAlleleBlottingReverse Transcriptase Polymerase Chain ReactionHeat-Shock ProteinSingle NucleotideMiddle AgedFlow CytometryCCAAT-Enhancer-Binding Protein3. Good healthUp-RegulationFemaleWesternHumanAnkylosingAdultAminopeptidaseMononuclearImmunologyBlotting WesternSingle-nucleotide polymorphismBiologyMajor histocompatibility complexSmall InterferingPolymorphism Single NucleotideAdult; Alleles; Aminopeptidases; Blotting Western; CCAAT-Enhancer-Binding Proteins; Cell Line; Female; Flow Cytometry; HLA-B27 Antigen; Heat-Shock Proteins; Humans; Leukocytes Mononuclear; Male; Middle Aged; Polymorphism Single Nucleotide; RNA Small Interfering; Reverse Transcriptase Polymerase Chain Reaction; Spondylitis Ankylosing; Unfolded Protein Response; Up-Regulation; X-Box Binding Protein 1; Immunology and Allergy; Rheumatology; ImmunologyCell Line03 medical and health sciencesDownregulation and upregulationRheumatologyHumansSpondylitis AnkylosingAllelePolymorphismAlleles030203 arthritis & rheumatologySpondylitiHLA-B27LeukocyteEndoplasmic reticulum aminopeptidase 2X-Box Binding Protein 1Molecular biologySettore MED/16 - Reumatologia030104 developmental biologyUnfolded protein responsebiology.proteinCCAAT-Enhancer-Binding ProteinsLeukocytes MononuclearUnfolded Protein ResponseRNAArthritisrheumatology (Hoboken, N.J.)
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Protein misfolding, amyotrophic lateral sclerosis and guanabenz: Protocol for a phase II RCT with futility design (ProMISe trial)

2017

IntroductionRecent studies suggest that endoplasmic reticulum stress may play a critical role in the pathogenesis of amyotrophic lateral sclerosis (ALS) through an altered regulation of the proteostasis, the cellular pathway-balancing protein synthesis and degradation. A key mechanism is thought to be the dephosphorylation of eIF2α, a factor involved in the initiation of protein translation. Guanabenz is an alpha-2-adrenergic receptor agonist safely used in past to treat mild hypertension and is now an orphan drug. A pharmacological action recently discovered is its ability to modulate the synthesis of proteins by the activation of translational factors preventing misfolded protein accumula…

0301 basic medicineOncologyPathologyamyotrophic lateral sclerosisamyotrophic lateral sclerosis; motor neurone disease; neuromuscular disease; randomized clinical trial guanabenz; unfolded protein response; adrenergic alpha-2 receptor agonist s; age of onset; amyotrophic lateral sclerosis; disease progression; double-blind method; endoplasmic reticulum stress; guanabenz; humans; italy; medical futility; neuroprotective agents; proteostasis deficienciesamyotrophic lateral sclerosis; motor neurone disease; neuromuscular disease; randomized clinical trial guanabenz; unfolded protein response; Medicine (all)randomized clinical trial guanabenzHelsinki declaration0302 clinical medicineProtocolAdrenergic alpha-2 Receptor Agonists1506Amyotrophic lateral sclerosisAge of OnsetGuanabenzMedicine (all)amyotrophic lateral sclerosis; motor neurone disease; neuromuscular disease; randomized clinical trial guanabenz; unfolded protein responseNeurodegenerationamyotrophic lateral sclerosis; motor neurone disease; neuromuscular disease; randomized clinical trial guanabenz; unfolded protein response;amyotrophic lateral sclerosis; guanabenz; motor neurone disease; neuromuscular disease; randomized clinical trial; unfolded protein response; Adrenergic alpha-2 Receptor Agonists; Age of Onset; Amyotrophic Lateral Sclerosis; Disease Progression; Double-Blind Method; Endoplasmic Reticulum Stress; Guanabenz; Humans; Italy; Medical Futility; Neuroprotective Agents; Proteostasis DeficienciesGeneral Medicineunfolded protein responseEndoplasmic Reticulum StressRiluzoleNeuroprotective AgentsNeurologyTolerabilityItalyDisease Progression1713GuanabenzMedical Futilitymedicine.drugmedicine.medical_specialtyamyotrophic lateral sclerosis; motor neurone disease; neuromuscular disease; randomized clinical trial guanabenz; unfolded protein response; Adrenergic alpha-2 Receptor Agonists; Age of Onset; Amyotrophic Lateral Sclerosis; Disease Progression; Double-Blind Method; Endoplasmic Reticulum Stress; Guanabenz; Humans; Italy; Medical Futility; Neuroprotective Agents; Proteostasis Deficiencies; Medicine (all)Neuroprotection03 medical and health sciencesmotor neurone diseaseDouble-Blind MethodInternal medicinemedicineHumansProteostasis Deficienciesbusiness.industryAmbientaleneuromuscular diseaserandomized clinical trialmedicine.diseaseClinical trial030104 developmental biologybusiness030217 neurology & neurosurgery
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The new murine hepatic 3A cell line responds to stress stimuli by activating an efficient Unfolded Protein Response (UPR)

2012

In the present study we have investigated the properties of a novel cell line (3A cells) obtained from the liver of 14.5. days post coitum (dpc) wild-type mouse embryo. 3A cells morphology was characterized by fluorescent localization of F-actin and β-catenin. The expression of specific genes and proteins essential to liver function in these cells was comparable or even more efficient then in the differentiated hepatocytic cell line MMH-D6. 3A cells also showed the capability to excrete molecules in extracellular spaces resembling functional bile canaliculi, glycogen storage activity and the ability to control retinol-binding protein 4 secretion in response to retinol deprivation. Their re…

Hepatocytes; ER stress; RBP4BiologyToxicologyCellular modelCell LineMicechemistry.chemical_compoundStress PhysiologicalExtracellularAnimalsHepatocyteSecretionActinbeta CateninAnimalReverse Transcriptase Polymerase Chain ReactionRBP4Gene Expression ProfilingTunicamycinDays post coitumCellular model; ER stress; Hepatocytes; RBP4; Actins; Animals; Cell Line; Fluorescein; Gene Expression Profiling; Glycogen; Liver; Retinol-Binding Proteins Plasma; Reverse Transcriptase Polymerase Chain Reaction; Stress Physiological; Tunicamycin; Unfolded Protein Response; beta Catenin; Mice; ToxicologyGeneral MedicineTunicamycinMolecular biologyActinsLiverchemistryCell cultureUnfolded Protein ResponseUnfolded protein responseER streFluoresceinLiver functionCellular modelRetinol-Binding Proteins PlasmaGlycogenToxicology in Vitro
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