Search results for "Drp1"

showing 3 items of 3 documents

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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PD‐1‐induced T cell exhaustion is controlled by a Drp1‐dependent mechanism

2022

Programmed cell death‐1 (PD‐1) signaling downregulates the T‐cell response, promoting an exhausted state in tumor‐infiltrating T cells, through mostly unveiled molecular mechanisms. Dynamin‐related protein‐1 (Drp1)‐dependent mitochondrial fission plays a crucial role in sustaining T‐cell motility, proliferation, survival, and glycolytic engagement. Interestingly, such processes are exactly those inhibited by PD‐1 in tumor‐infiltrating T cells. Here, we show that PD‐1pos CD8+ T cells infiltrating an MC38 (murine adenocarcinoma)‐derived murine tumor mass have a downregulated Drp1 activity and more elongated mitochondria compared with PD‐1neg counterparts. Also, PD‐1pos lymphocytic elements in…

DynaminsCancer Researchendocrine systemSettore BIO/06T cellmedicine.medical_treatmentProgrammed Cell Death 1 ReceptorDrp1CD8-Positive T-LymphocytesSettore MED/08 - Anatomia PatologicaMitochondrial Dynamicstumor‐infiltrating lymphocytesMiceImmune systemDownregulation and upregulationDrp1 mitochondria PD-1 T cell tumor-infiltrating lymphocytesPD-1GeneticsmedicineAnimalsHumansSettore MED/05 - Patologia ClinicaResearch ArticlesPI3K/AKT/mTOR pathwayRC254-282Tumor-infiltrating lymphocytesChemistryPD‐1T cellNeoplasms. Tumors. Oncology. Including cancer and carcinogensGeneral MedicineImmunotherapyCell biologymitochondriamedicine.anatomical_structureOncologytumor-infiltrating lymphocytesMolecular MedicineMitochondrial fissionCD8Research ArticleMolecular Oncology
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Drp1 Controls Effective T Cell Immune-Surveillance by Regulating T Cell Migration, Proliferation, and cMyc-Dependent Metabolic Reprogramming

2018

Summary Mitochondria are key players in the regulation of T cell biology by dynamically responding to cell needs, but how these dynamics integrate in T cells is still poorly understood. We show here that the mitochondrial pro-fission protein Drp1 fosters migration and expansion of developing thymocytes both in vitro and in vivo. In addition, we find that Drp1 sustains in vitro clonal expansion and cMyc-dependent metabolic reprogramming upon activation, also regulating effector T cell numbers in vivo. Migration and extravasation defects are also exhibited in Drp1-deficient mature T cells, unveiling its crucial role in controlling both T cell recirculation in secondary lymphoid organs and acc…

Genetics and Molecular Biology (all)0301 basic medicinecell migrationT-LymphocytesCellCell CountMitochondrionLymphocyte ActivationBiochemistryCell MovementHomeostasismetabolic reprogrammingcell migration; cell proliferation; cMyc; Drp1; exhaustion; metabolic reprogramming; mitochondrial dynamics; T cells; thymocytes; tumor immune-surveillance; Biochemistry Genetics and Molecular Biology (all)lcsh:QH301-705.5cMycImmunologic SurveillanceMice KnockoutThymocytesEffectorDrp1; T cells; cMyc; cell migration; cell proliferation; exhaustion; metabolic reprogramming; mitochondrial dynamics; thymocytes; tumor immune-surveillanceCell migrationCell DifferentiationCell biologymedicine.anatomical_structurePhenotypeDynaminsendocrine systemSettore BIO/06Cell SurvivalLymphoid TissueMAP Kinase Signaling SystemT cellT cellsReceptors Antigen T-CellDrp1BiologyGeneral Biochemistry Genetics and Molecular BiologyArticleProto-Oncogene Proteins c-myc03 medical and health sciencestumor immune-surveillancemitochondrial dynamicexhaustionHomeostasimedicineAnimalsCell ProliferationTumor microenvironmentBiochemistry Genetics and Molecular Biology (all)Cell growthAnimalT cellthymocytemitochondrial dynamicsDynamin030104 developmental biologylcsh:Biology (General)T-LymphocyteT cell migration
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