0000000000381487

AUTHOR

Gabriella Pietra

showing 2 related works from this author

Human CD8 T lymphocytes recognize Mycobacterium tuberculosis antigens presented by HLA-E during active tuberculosis and express type 2 cytokines

2015

CD8 T cells contribute to protective immunity against Mycobacterium tuberculosis. In humans, M. tuberculosis reactive CD8 T cells typically recognize peptides associated to classical MHC class Ia molecules, but little information is available on CD8 T cells recognizing M. tuberculosis Ags presented by nonclassical MHC class Ib molecules. We show here that CD8 T cells from tuberculosis (TB) patients recognize HLA-E-binding M. tuberculosis peptides in a CD3/TCR αβ mediated and CD8-dependent manner, and represent an additional type of effector cells playing a role in immune response to M. tuberculosis during active infection. HLA-E-restricted recognition of M. tuberculosis peptides is detectab…

MaleTetramersCytotoxicHLA-EReceptors Antigen T-Cell alpha-betaT-LymphocytesEpitopes T-LymphocyteHIV InfectionsMycobacterium tuberculosiEpitopesHLA-EReceptorsImmunology and AllergyCells CulturedType 2 cytokinealpha-betaCulturedbiologyCoinfectionType 2 cytokinesMedicine (all)BacterialMiddle AgedAcquired immune systemAntibodies Bacterialmedicine.anatomical_structureTBAntigenCytokinesFemaleNK Cell Lectin-Like Receptor Subfamily CNK Cell Lectin-Like Receptor Subfamily DCD8 T lymphocyteProtein BindingAdultTuberculosisSettore MED/17 - Malattie InfettiveT cellCellsImmunologyAntibodiesMycobacterium tuberculosisImmune systemAntigenMHC class ImedicineHumansTuberculosisAntigensSettore MED/04 - Patologia GeneraleAntigens BacterialCD8 T lymphocytes; HLA-E; Mycobacterium tuberculosis; TB; Tetramers; Type 2 cytokines; Adult; Antibodies Bacterial; Antigens Bacterial; Cells Cultured; Coinfection; Cytokines; Epitopes T-Lymphocyte; Female; HIV Infections; Histocompatibility Antigens Class I; Humans; Male; Middle Aged; Mycobacterium tuberculosis; NK Cell Lectin-Like Receptor Subfamily C; NK Cell Lectin-Like Receptor Subfamily D; Protein Binding; Receptors Antigen T-Cell alpha-beta; T-Lymphocytes Cytotoxic; Tuberculosis; Immunology; Immunology and Allergy; Medicine (all)Histocompatibility Antigens Class IMycobacterium tuberculosismedicine.diseasebiology.organism_classificationT-CellVirologyCD8 T lymphocytesT-LymphocyteImmunologybiology.proteinTetramerT-Lymphocytes CytotoxicCD8 T lymphocytes; HLA-E; Mycobacterium tuberculosis; TB; Tetramers; Type 2 cytokines; Immunology; Immunology and Allergy
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Chronic lymphocytic leukemia nurse-like cells express hepatocyte growth factor receptor (c-MET) and indoleamine 2,3-dioxygenase and display features …

2014

Hepatocyte growth factor, produced by stromal and follicular dendritic cells, and present at high concentrations in the sera of patients with chronic lymphocytic leukemia, prolongs the survival of leukemic B cells by interacting with their receptor, c-MET. It is, however, unknown whether hepatocyte growth factor influences microenvironmental cells, such as nurse-like cells, which deliver survival signals to the leukemic clone. We evaluated the expression of c-MET on nurse-like cells and monocytes from patients with chronic lymphocytic leukemia and searched for phenotypic/functional features supposed to be influenced by the hepatocyte growth factor/c-MET interaction. c-MET is expressed at hi…

STAT3 Transcription FactorC-MetStromal cellmedicine.medical_treatmentGene ExpressionBiologyMonocyteschemistry.chemical_compoundT-Lymphocyte SubsetsmedicineHumansIndoleamine-Pyrrole 23-DioxygenaseGrowth factor receptor inhibitorPhosphorylationIndoleamine 23-dioxygenaseCells CulturedFollicular dendritic cellsMacrophagesGrowth factorArticlesHematologyProto-Oncogene Proteins c-metLeukemia Lymphocytic Chronic B-CellCoculture TechniquesInterleukin-10C-MET; INDOLEAMINE 23-DIOXYGENASEchronic lymphocytic leukemia hepatocyte growth factor c-MET nurse-like cellshepatocyte growth factornurse-like cellschemistryHepatocyte Growth Factor ReceptorCancer researchchronic lymphocytic leukemiaHepatocyte growth factorC-METINDOLEAMINE 23-DIOXYGENASEmedicine.drugHaematologica
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