Search results for "GATA3"

showing 4 items of 14 documents

Human CD8+ T-cells Recognizing Peptides from Mycobacterium tuberculosis (Mtb) Presented by HLA-E Have an Unorthodox Th2-like, Multifunctional, Mtb In…

2015

Mycobacterial antigens are not exclusively presented to T-cells by classical HLA-class Ia and HLA-class II molecules, but also through alternative antigen presentation molecules such as CD1a/b/c, MR1 and HLA-E. We recently described mycobacterial peptides that are presented in HLA-E and recognized by CD8+ T-cells. Using T-cell cloning, phenotyping, microbiological, functional and RNA-expression analyses, we report here that these T-cells can exert cytolytic or suppressive functions, inhibit mycobacterial growth, yet express GATA3, produce Th2 cytokines (IL-4,-5,-10,-13) and activate B-cells via IL-4. In TB patients, Mtb specific cells were detectable by peptide-HLA-E tetramers, and IL-4 and…

MaleMacrophageQH301-705.5ImmunologyAntigen presentationBacterial ProteinMycobacterium tuberculosiHuman leukocyte antigenGATA3 Transcription FactorCD8-Positive T-LymphocytesMicrobiologyMicrobiologyMycobacterium tuberculosisImmune systemTh2 CellsGeneticHLA-EBacterial ProteinsVirologyGeneticsCytotoxic T cellHumansBiology (General)Th2 CellCytokineMolecular BiologyAntigen PresentationbiologyMacrophagesHistocompatibility Antigens Class ICD8-Positive T-LymphocyteMycobacterium tuberculosisRC581-607biology.organism_classificationBacterial Proteins; CD8-Positive T-Lymphocytes; Cytokines; Female; GATA3 Transcription Factor; Histocompatibility Antigens Class I; Humans; Macrophages; Male; Mycobacterium tuberculosis; Peptides; Th2 Cells; Antigen Presentation; Microbiology; Parasitology; Virology; Immunology; Genetics; Molecular BiologyPhenotypeVirology3. Good healthPeptideCytokinesParasitologyFemaleImmunologic diseases. AllergyPeptidesCD8HumanResearch ArticlePLoS Pathogens
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Cyclic AMP-induced Chromatin Changes Support the NFATc-mediated Recruitment of GATA-3 to the Interleukin 5 Promoter

2008

Elevated intracellular cyclic AMP levels, which suppress the proliferation of naive T cells and type 1 T helper (Th1) cells are a property of T helper 2 (Th2) cells and regulatory T cells. While cyclic AMP signals interfere with the IL-2 promoter induction, they support the induction of Th2-type genes, in particular of il-5 gene. We show here that cyclic AMP signals support the generation of three inducible DNase I hypersensitive chromatin sites over the il-5 locus, including its promoter region. In addition, cyclic AMP signals enhance histone H3 acetylation at the IL-5 promoter and the concerted binding of GATA-3 and NFATc to the promoter. This is facilitated by direct protein-protein inte…

Quantitative Trait LociGATA3 Transcription FactorBiologyBiochemistryCell LineHistonesMiceTh2 CellsCyclic AMPTranscriptional regulationAnimalsHumansTranscription Chromatin and EpigeneticsPromoter Regions GeneticHistone H3 acetylationMolecular BiologyInterleukin 5Cell ProliferationMice Inbred BALB CNFATC Transcription FactorsEffectorLymphokineAcetylationZinc FingersPromoterCell BiologyDNA-binding domainTh1 CellsChromatin Assembly and DisassemblyMolecular biologyChromatinProtein Structure TertiaryChromatinGene Expression RegulationInterleukin-2Interleukin-5Signal TransductionJournal of Biological Chemistry
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Foxp3 and gata3 polymorphisms, vitamin d3 and multiple sclerosis

2021

Background: Regulatory T cells (Tregs) alterations have been implicated in the pathogenesis of Multiple Sclerosis (MS). Recently, a crucial role of the X-Linked Forkhead Box P3 (FoxP3) for the development and the stability of Tregs has emerged, and FOXP3 gene polymorphisms have been associated with the susceptibility to autoimmune diseases. The expression of Foxp3 in Tregs is regulated by the transcription factor GATA binding-protein 3 (GATA3) and vitamin D3. The aim of this retrospective case-control study was to investigate the potential association between FOXP3 and GATA3 genetic variants, Vitamin D3, and MS risk. Methods: We analyzed two polymorphisms in the FOXP3 gene (rs3761547 and rs…

VitaminFOXP3chemical and pharmacologic phenomenaSingle-nucleotide polymorphismArticlelcsh:RC321-571Multiple sclerosis03 medical and health scienceschemistry.chemical_compound0302 clinical medicineGeneticPolymorphism (computer science)GATA3Vitamin D and neurologymedicineAlleleVitamin Dlcsh:Neurosciences. Biological psychiatry. Neuropsychiatry030304 developmental biology0303 health sciencesbusiness.industryGeneral NeuroscienceMultiple sclerosisGATA3FOXP3hemic and immune systemsmedicine.diseasechemistryImmunologybusinessPolymorphisms030217 neurology & neurosurgery
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THU0045 IL-25/IL-17RB AXIS IS ACTIVATED AND ASSOCIATED WITH ILC2 EXPANSION IN GRANULOMATOSIS WITH POLYANGIITIS (GPA)

2019

Background: Pathogenesis of Granulomatosis with polyangiitis (GPA) is still unknown. However, it has been observed a skewing of circulating CD4+ T cells toward the Th17 and Th2 phenotype. The pro-inflammatory cytokine interleukin 25 (IL-25) is a member of IL-17 cytokine family associated to the Th2 immune phenotype. Through the receptor IL17RB, IL-25 further sustains the Th2-type immune response and elicits the expansion of the type 2 innate lymphoid cells (ILC2) and M2 macrophages. A pathogenic role of the innate lymphoid cells in GPA has been recently demonstrated; however, the relevance of IL-25 in this condition remains unexplored. Objectives: Aim of the study was to evaluate the expres…

medicine.medical_specialtybusiness.industrymedicine.medical_treatmentInnate lymphoid cellConsensus conferenceGATA3medicine.diseaseGastroenterologyPathogenesisImmune systemCytokineInternal medicineMedicineRituximabbusinessGranulomatosis with polyangiitismedicine.drugPoster Presentations
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