Search results for "SIRT1"

showing 6 items of 16 documents

Transgenic expression and activation of PGC-1α protect dopaminergic neurons in the MPTP mouse model of Parkinson’s disease

2011

Mitochondrial dysfunction and oxidative stress occur in Parkinson’s disease (PD), but little is known about the molecular mechanisms controlling these events. Peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) is a transcriptional coactivator that is a master regulator of oxidative stress and mitochondrial metabolism. We show here that transgenic mice overexpressing PGC-1α in dopaminergic neurons are resistant against cell degeneration induced by the neurotoxin MPTP. The increase in neuronal viability was accompanied by elevated levels of mitochondrial antioxidants SOD2 and Trx2 in the substantia nigra of transgenic mice. PGC-1α overexpression also protected against MP…

MaleSOD2Mice TransgenicSubstantia nigraMitochondrionBiologyNeuroprotectionCell LineMiceCellular and Molecular Neurosciencechemistry.chemical_compoundDopaminemedicineAnimalsNeurotoxinParkinson Disease SecondaryMolecular BiologyPGC-1α RSV SIRT1 MPTP Dopaminergic neurons Parkinson’s diseasePharmacologyMPTPDopaminergicBrainParkinson DiseaseCell BiologyPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaMitochondriaCell biologyDisease Models AnimalOxidative Stressnervous systemBiochemistrychemistry1-Methyl-4-phenyl-1236-tetrahydropyridineTrans-ActivatorsMolecular MedicineFemaleTranscription Factorsmedicine.drugCellular and Molecular Life Sciences
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TRPA1 channel is a cardiac target of mIGF-1/SIRT1 signaling.

2014

Cardiac overexpression of locally acting muscle-restricted (m)IGF-1 and the consequent downstream activation of NAD+-dependent protein deacetylase sirtuin 1 (SIRT1) trigger potent cardiac antioxidative and antihypertrophic effects. Transient receptor potential (TRP) cation channel A1 (TRPA1) belongs to the TRP ion channel family of molecular detectors of thermal and chemical stimuli that activate sensory neurons to produce pain. Recently, it has been shown that TRPA1 activity influences blood pressure, but the significance of TRPA1 in the cardiovascular system remains elusive. In the present work, using genomic screening in mouse hearts, we found that TRPA1 is a target of mIGF-1/SIRT1 sign…

Member 1PhysiologyTransgeneHeart; Insulin-like growth factor-1; Member 1; Sirtuin 1; Subfamily A; Transient receptor potential cation channelBlood PressurePharmacologymedicine.disease_causeTransient receptor potential channelMiceTransient Receptor Potential ChannelsSirtuin 1Physiology (medical)medicineAnimalsMyocytes CardiacInsulin-Like Growth Factor IPromoter Regions GeneticTRPA1 Cation ChannelbiologySirtuin 1AntagonistIGF-1 SIRT1 TRPA1 micefood and beveragesHeartTransient receptor potential cation channelInsulin-like growth factor-1Subfamily APurinesbiology.proteinProtein deacetylaseAcetanilidesNAD+ kinaseSignal transductionCardiology and Cardiovascular Medicinepsychological phenomena and processesOxidative stressSignal Transduction
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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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Role of myeloïd derived suppressive cells (MDSC) and Th17 lymphocytes in chemotherapy and immunotherapy efficacy

2017

Actual oncology is still facing resistance and rapid progression of cancer. Intrinsic resistance mechanisms developed by tumor cells determine chemotherapy and immunotherapy efficacy. It is now recognized that the host immune response status is in part implicated in the therapeutic outcome of patients. The aim of our research team is to characterize this response and to study the impact of therapies in order to identify the mechanisms associated with future exhaust of the tumor. In this context, we have shown that chemotherapy (5-FU, oxaliplatin, anti-VEGF: FOLFOX-bevacizumab) in some patients causes a drop in devices gMDSC (granulocytic myeloid derived suppressive cells) that is associated…

SIRT1[SDV.IMM] Life Sciences [q-bio]/ImmunologyImmunothérapieMDSCChemotherapyTh17ImmunotherapyChimiothérapieCancer
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Clivaggio e shuttling nucleo-citoplasmatico della proteina Sirt1, in cellule di carcinoma mammario MDA-MB231.

2013

Sirt1 è una proteina nota per il suo ruolo di istone deacetilasi NAD+ dipendente che sembra essere coinvolta in una ampia gamma di processi cellulari, quali regolazione genica, controllo dello stato metabolico, meccanismi di sopravvivenza allo stress. Dalla letteratura emergono dati contrastanti concernenti la funzione di Sirt1 nei tumori, le vengono infatti attribuiti ruoli sia di oncogene che di soppressore tumorale, argomento fortemente dibattuto. A conferma di ciò, la localizzazione subcellulare e la funzione di Sirt1 variano nei differenti tipi cellulari (1). E’ anche noto che Sirt1 risulta frequentemente clivata in varie linee cellulari grazie ad attività proteolitiche nucleari (2). Q…

Sirt1 cellule MDA-MB231 carcinoma mammario
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Stress induced premature liver senecence in adulthood after transient postnatal overfeeding in mice

2017

IF 2.043; International audience

premature senescence[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular systemSIRT1 deficiency[ SDV.MHEP.CSC ] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system[SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system
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