Search results for " Transcription"

showing 10 items of 810 documents

Mast Cells and Th17 Cells Contribute to the Lymphoma-Associated Pro-Inflammatory Microenvironment of Angioimmunoblastic T-Cell Lymphoma

2010

Reports focusing on the immunological microenvironment of peripheral T-cell lymphomas (PTCL) are rare. Here we studied the reciprocal contribution of regulatory (Treg) and interleukin-17-producing (Th17) T-cells to the composition of the lymphoma-associated microenvironment of angioimmunoblastic T-cell lymphoma (AITL) and PTCL not otherwise specified on tissue microarrays from 30 PTCLs not otherwise specified and 37 AITLs. We found that Th17 but not Treg cells were differently represented in the two lymphomas and correlated with the amount of mast cells (MCs) and granulocytes, which preferentially occurred in the cellular milieu of AITL cases. We observed that MCs directly synthesized inter…

Angioimmunoblastic T-cell lymphomaLymphomaInflammationBiologymedicine.disease_causeCXCR3Lymphoma T-CellCXCR5Pathology and Forensic MedicineAutoimmunityAnimals Chemokine CXCL13; immunology Cytokines; genetics/immu/nology Forkhead Transcription Factors; immunology Gene Expression Profiling Humans Immunoblastic Lymphadenopathy; immunology/pathology Inflammation; immunology Interleukin-17; immunology Interleukin-6; immunology Lymphoma; T-Cell; immunology/pathology Mast Cells; immunology Microarray Analysis Th17 Cells; immunology Tumor MicroenvironmentimmunologymedicineTumor MicroenvironmentAnimalsHumansMast CellsInflammationTumor microenvironmentInterleukin-6Gene Expression ProfilingInterleukin-17Forkhead Transcription FactorsMast cellmedicine.diseaseT-CellMicroarray AnalysisChemokine CXCL13humanitiesgenetics/immu/nologyLymphomamedicine.anatomical_structureImmunoblastic LymphadenopathyImmunologyCytokinesimmunology/pathologyTh17 CellsMast Cell microenvironment angioimmunoblasticmedicine.symptomRegular Articles
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Glycogen synthase 2 is a novel target gene of peroxisome proliferator-activated receptors.

2007

International audience; Glycogen synthase 2 (Gys-2) is the ratelimiting enzyme in the storage of glycogen in liver and adipose tissue, yet little is known about regulation of Gys-2 transcription. The peroxisome proliferator-activated receptors (PPARs) are transcription factors involved in the regulation of lipid and glucose metabolism and might be hypothesized to govern glycogen synthesis as well. Here, we show that Gys-2 is a direct target gene of PPARalpha, PPARbeta/delta and PPARgamma. Expression of Gys-2 is significantly reduced in adipose tissue of PPARalpha-/-, PPARbeta/delta-/- and PPARgamma+/- mice. Furthermore, synthetic PPARbeta/delta, and gamma agonists markedly up-regulate Gys-2…

Animals; Chromatin/ultrastructure; DNA Primers; Gene Expression Regulation Enzymologic; Glycogen Synthase/genetics; Hepatocytes/enzymology; Hepatocytes/physiology; Mice; Mice Knockout; Peroxisome Proliferator-Activated Receptors/deficiency; Peroxisome Proliferator-Activated Receptors/genetics; Polymerase Chain Reaction; RNA/genetics; RNA/isolation & purification; Rats; Transcription GeneticTranscription GeneticPeroxisome proliferator-activated receptorMESH : HepatocytesPPREPolymerase Chain Reactionadipose-tissuePPARMESH: HepatocytesMice0302 clinical medicineMESH: Animals610 Medicine & healthchemistry.chemical_classificationRegulation of gene expression0303 health sciencesGlycogenglycogen-synthaseChromatinGlycogen Synthase030220 oncology & carcinogenesisMESH : DNA PrimersmicroarrayMESH: DNA Primersmedicine.medical_specialtyHealth aging / healthy living [IGMD 5]fatty-acid oxidationliverGene Expression Regulation EnzymologicMESH: Chromatin03 medical and health sciencesskeletal-muscleGlycogen synthaseMolecular Biology[ SDV.BBM ] Life Sciences [q-bio]/Biochemistry Molecular BiologyHNF4αVLAGPharmacologybeta/deltaMESH: Polymerase Chain Reactionresponse elementsMESH : Peroxisome Proliferator-Activated ReceptorsEndocrinologychemistryMicrobial pathogenesis and host defense [UMCN 4.1]Response elementPeroxisome Proliferator-Activated ReceptorsAdipose tissueMESH: Peroxisome Proliferator-Activated Receptorsin-vivoMESH: Mice KnockoutTransactivationchemistry.chemical_compoundVoeding Metabolisme en GenomicaMESH : RNAMESH : Polymerase Chain ReactionMice KnockoutMESH : ChromatinMESH : RatsMESH: Gene Expression Regulation EnzymologicMetabolism and Genomicsadipose tissueMetabolisme en GenomicaMolecular MedicineNutrition Metabolism and GenomicsMESH : Glycogen SynthaseResearch ArticleMESH: Ratsglycogen synthase 2610 Medicine & healthBiologyMESH : Gene Expression Regulation EnzymologicCellular and Molecular NeuroscienceVoedingMESH: RNAInternal medicineMESH : MicemedicineAnimals[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular BiologyTranscription factorMESH: Micealpha ppar-alpha030304 developmental biologyNutritionDNA PrimersMESH: Glycogen SynthaseMESH: Transcription GeneticMESH : Transcription GeneticCell BiologyRatsgene transcriptionbiology.proteinHepatocytesRNAMESH : Mice KnockoutgammaMESH : Animalsmetabolism
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Anti-inflammatory and tight junction protective activity of the herbal preparation STW 5-II on mouse intestinal organoids

2021

Abstract Background Irritable bowel syndrome (IBS) is a functional bowel disorder, in which recurrent abdominal pain is associated with defecation or a change in bowel habits. STW 5-II is a combination of six medicinal herbs with a clinically proven efficacy in managing IBS. Aim This study aims to establish an in vitro IBS model using mouse intestinal organoids and to explore the anti-inflammatory and tight junction protective activities of the multi-herbal preparation STW 5-II. Methods Intestinal organoids were cultured in 1:1 Matrigel™ and medium domes. Inflammation and tight junction disruption were induced by a cocktail of cytokines (TNFα, IFNγ, IL-1β, IL-6) and bacterial proteins (LPS,…

Anti-Inflammatory AgentsPharmaceutical ScienceInflammationPharmacologyTight JunctionsProinflammatory cytokineIrritable Bowel SyndromeMice03 medical and health sciencesOrgan Culture Techniques0302 clinical medicineWestern blotDownregulation and upregulationDrug DiscoverymedicineOrganoidAnimalsComputer SimulationIntestinal MucosaIrritable bowel syndrome030304 developmental biologyPharmacology0303 health sciencesTight junctionmedicine.diagnostic_testPlant Extractsbusiness.industryNF-kappa Bmedicine.diseaseIntestinesOrganoidsDisease Models AnimalSTAT1 Transcription FactorGene Expression RegulationComplementary and alternative medicine030220 oncology & carcinogenesisZonula Occludens-1 ProteinMolecular MedicineTumor necrosis factor alphaInflammation Mediatorsmedicine.symptombusinessPhytomedicine
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Generation of monoclonal antibodies against human regulatory T cells.

2009

Abstract Natural CD4 + CD25 + Foxp3 + regulatory T cells (Tregs) control the activation of the immune system and therefore have become a major area of research in immunology. The generation of monoclonal antibodies against human Tregs offers the possibility to discover novel Treg-specific or Treg-associated surface markers and to identify targets for a therapeutic modulation of Tregs. Here we present a methodology optimized to efficiently induce and select mAb against human Tregs by repeated immunization of mice with Tregs from a single donor and a differential two-step flow cytometry-based hybridoma screening procedure.

Anticorps monoclonalmedicine.drug_classImmunologyReceptors Antigen T-Cellchemical and pharmacologic phenomenaCell SeparationBiologyMonoclonal antibodyT-Lymphocytes RegulatoryFlow cytometryEpitopesMiceImmune systemAntibody SpecificitymedicineImmunology and AllergyAnimalsHumansIL-2 receptorLeukapheresisImmunization ScheduleHybridomasmedicine.diagnostic_testInterleukin-2 Receptor alpha SubunitFOXP3Antibodies Monoclonalhemic and immune systemsForkhead Transcription FactorsT lymphocyteFlow CytometryImmunizationImmunologyFemaleEpitope MappingJournal of immunological methods
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Depletion of alloreactive T cells via CD69: implications on antiviral, antileukemic and immunoregulatory T lymphocytes

2005

Selective depletion of alloreactive T cells from stem-cell allografts should abrogate graft-versus-host disease while preserving beneficial T cell specificities to facilitate engraftment and immune reconstitution. We therefore explored a refined immunomagnetic separation strategy to effectively deplete alloreactive donor lymphocytes expressing the activation antigen CD69 upon stimulation, and examined the retainment of antiviral, antileukemic, and immunoregulatory T cells. In addition to the CD69high T cell fraction, our studies retrieved two T cell subsets based on residual CD69 expression. Whereas, truly CD69(neg) cells were devoid of detectable alloresponses to original stimulators, CD69…

Antigens Differentiation T-LymphocyteCD4-Positive T-LymphocytesEpstein-Barr Virus InfectionsHerpesvirus 4 HumanT cellCytomegalovirusGraft vs Host DiseaseCell Cycle Proteinschemical and pharmacologic phenomenaStreptamerBiologyLymphocyte ActivationLymphocyte DepletionCell LineInterleukin 21Antigens CDmedicineHumansTransplantation HomologousCytotoxic T cellLectins C-TypeIL-2 receptorAntigen-presenting cellTransplantationHematopoietic Stem Cell TransplantationNuclear ProteinsForkhead Transcription FactorsReceptors Interleukin-2hemic and immune systemsHematologyT lymphocyteNatural killer T cellDNA-Binding Proteinsmedicine.anatomical_structureCytomegalovirus InfectionsImmunologyRNA Splicing FactorsCarrier ProteinsImmunologic MemoryBone Marrow Transplantation
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NF-ATp plays a prominent role in the transcriptional induction of Th2-type lymphokines

1997

Antigens Differentiation T-LymphocyteCD4-Positive T-LymphocytesTranscription GeneticImmunologyCell CountSpleenDNA-binding proteinMiceTh2 CellsAntigens CDmedicineAnimalsImmunology and AllergyLectins C-TypeLymphocytesL-SelectinNuclear proteinTranscription factorLymphokinesNFATC Transcription FactorsbiologyChemistryLymphokineNuclear ProteinsGene deletionNFATC Transcription FactorsCell biologyDNA-Binding ProteinsHyaluronan Receptorsmedicine.anatomical_structureImmunologybiology.proteinL-selectinGene DeletionSpleenTranscription FactorsImmunology Letters
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Mycobacterial antigen(s) induce anergy by altering TCR- and TCR/CD28-induced signalling events: insights into T-cell unresponsiveness in leprosy.

2009

Present study investigates the role of Mycobacterium leprae (M. leprae) antigens on TCR- and TCR/CD28-induced signalling leading to T-cell activation and further correlates these early biochemical events with T-cell anergy, as prevailed in advanced stages of leprosy. We observed that both whole cell lystae (WCL) and soluble fraction of M. leprae sonicate (MLSA) not only inhibited TCR, thapsigargin and ionomycin induced calcium fluxes by diminishing the opening of calcium channels, but also TCR- or TCR/CD28-induced proximal signalling events like phosphorylation of Zap-70 and protein kinase-C (PKC) activity. Study of TCR- and TCR/CD28-induced downstream signals revealed that M. leprae antige…

Antigens Differentiation T-LymphocyteMAP Kinase Signaling SystemT cellT-LymphocytesImmunologyReceptors Antigen T-Cellchemical and pharmacologic phenomenaBiologyLymphocyte ActivationJurkat cellsp38 Mitogen-Activated Protein Kinaseschemistry.chemical_compoundJurkat CellsCD28 AntigensAntigens CDLeprosyCalcium fluxmedicineHumansLectins C-TypeEnzyme InhibitorsPromoter Regions GeneticMolecular BiologyMycobacterium lepraeProtein Kinase CCell ProliferationClonal AnergyAntigens BacterialMitogen-Activated Protein Kinase 3ZAP-70 Protein-Tyrosine KinaseIonophoresNFATC Transcription FactorsIonomycinT-cell receptorInterleukin-2 Receptor alpha SubunitCD28hemic and immune systemsNFATbiology.organism_classificationCell biologyMycobacterium lepraemedicine.anatomical_structurechemistryGene Expression RegulationIonomycinImmunologyInterleukin-2ThapsigarginCalciumMolecular immunology
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Use of Saccharomyces cerevisiae and Caenorhabditis elegans as model organisms to study the effect of cocoa polyphenols in the resistance to oxidative…

2011

Developing functional foods to improve the quality of life for elderly people has great economic and social impact. Searching for and validating ingredients with in vivo antioxidant effects is one of the key steps in developing this kind of food. Here we describe the combined use of simple biological models and transcriptomics to define the functional intracellular molecular targets of a polyphenol-enriched cocoa powder. Cocoa powder supplemented culture medium led to increased resistance to oxidative stress, in both the budding yeast Saccharomyces cerevisiae and the nematode Caenorhabditis elegans, and, in the latter, lifespan was also increased. These effects are fully dependent on the po…

AntioxidantSaccharomyces cerevisiae Proteinsmedicine.medical_treatmentSaccharomyces cerevisiaeGene ExpressionSaccharomyces cerevisiaemedicine.disease_causeModels BiologicalAntioxidantsHistone DeacetylasesIngredientFunctional foodPhenolsFunctional FoodmedicineAnimalsSirtuinsFood scienceCaenorhabditis elegansCaenorhabditis elegans ProteinsCaenorhabditis elegansFlavonoidsCacaobiologybusiness.industryfood and beveragesPolyphenolsForkhead Transcription FactorsGeneral Chemistrybiology.organism_classificationYeastBiotechnologyCulture MediaOxidative StressPolyphenolGeneral Agricultural and Biological SciencesbusinessOxidative stressTranscription FactorsJournal of agricultural and food chemistry
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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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STAT6: its role in interleukin 4-mediated biological functions.

1997

Interleukin (IL) 4 is known to be a cytokine which plays a central role in the regulation of immune response. Studies on cytokine signal transduction have clarified the mechanism by which IL4 exerts its functions. Two cytoplasmic proteins, signal transducer and activator of transcription (STAT) 6 and IL4-induced phosphotyrosine substrate/insulin receptor substrate 2 (4PS/IRS2), are activated in IL4 signal transduction. Recent studies from STAT6-deficient mice have revealed the essential role of STAT6 in IL4-mediated biological actions. In addition, STAT6 has also been demonstrated to be important for the functions mediated by IL13, which is related to IL4. IL4 and IL13 have been shown to in…

BiologyMediatorimmune system diseasesAntigens CDparasitic diseasesDrug DiscoveryAnimalsHumansskin and connective tissue diseasesGenetics (clinical)Interleukin 4STAT6Interleukin-13Interleukinhemic and immune systemsReceptors InterleukinIRS2Cell biologyReceptors Interleukin-4Interleukin 13ImmunologySTAT proteinTrans-ActivatorsMolecular MedicineInterleukin-4Signal transductionSTAT6 Transcription FactorSignal TransductionJournal of molecular medicine (Berlin, Germany)
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