0000000000294636

AUTHOR

Giovanni Delogu

0000-0003-0182-8267

showing 3 related works from this author

Janus -faced liposomes enhance antimicrobial innate immune response in Mycobacterium tuberculosis infection

2012

We have generated unique asymmetric liposomes with phosphatidylserine (PS) distributed at the outer membrane surface to resemble apoptotic bodies and phosphatidic acid (PA) at the inner layer as a strategy to enhance innate antimycobacterial activity in phagocytes while limiting the inflammatory response. Results show that these apoptotic body-like liposomes carrying PA (ABL/PA) ( i ) are more efficiently internalized by human macrophages than by nonprofessional phagocytes, ( ii ) induce cytosolic Ca 2+ influx, ( iii ) promote Ca 2+ -dependent maturation of phagolysosomes containing Mycobacterium tuberculosis (MTB), ( iv ) induce Ca 2+ -dependent reactive oxygen species (ROS) production, (…

MaleAntitubercular AgentsApoptosisSettore MED/07Mice0302 clinical medicineInnateInbred BALB CMycobacterium tuberculosis liposomes0303 health sciencesMice Inbred BALB CMultidisciplinaryLeukemiaTumorbiologyMacrophages; Leukemia Monocytic Acute; Animals; Apoptosis; Calcium; Humans; Disease Models Animal; Mice; Cell Line Tumor; Immunity Innate; Reactive Oxygen Species; Mice Inbred BALB C; Liposomes; Phosphatidylserines; Tuberculosis Pulmonary; Adult; Bronchoalveolar Lavage Fluid; Middle Aged; Antitubercular Agents; Phagocytosis; Male; Mycobacterium tuberculosis; IsoniazidInterleukinPulmonaryMiddle AgedSettore BIO/193. Good healthPNAS PlusLeukemia Monocytic AcuteTumor necrosis factor alphaBronchoalveolar Lavage FluidIntracellularAdultPhagocytosisPhosphatidylserinesAcutePhagolysosomeSettore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICAMicrobiologyCell LineMycobacterium tuberculosis03 medical and health sciencesPhagocytosisCell Line TumorIsoniazidTuberculosisAnimalsHumansTuberculosis Pulmonary030304 developmental biologySettore MED/04 - Patologia GeneraletherapyInnate immune systemMonocyticAnimalMacrophagesImmunityMycobacterium tuberculosisbiology.organism_classificationImmunity InnateDisease Models AnimalApoptosisImmunologyDisease ModelsLiposomesCalciumReactive Oxygen Species030215 immunology
researchProduct

HLA-E-Restricted CD8+ T Lymphocytes Efficiently Control Mycobacterium tuberculosis and HIV-1 Co-Infection

2020

We investigated the contribution of human leukocyte antigen A2 (HLA-A2) and HLA-E-restricted CD8+ T cells in patients with Mycobacterium tuberculosis and human immunodeficiency virus 1 (HIV-1) coinfection. HIV-1 downregulates HLA-A, -B, and -C molecules in infected cells, thus influencing recognition by HLA class I-restricted CD8+ T cells but not by HLA-E-restricted CD8+ T cells, owing to the inability of the virus to downmodulate their expression. Therefore, antigen-specific HLA-E-restricted CD8+ T cells could play a protective role in Mycobacterium tuberculosis and HIV-1 coinfection. HLA-E- and HLA-A2-restricted Mycobacterium tuberculosis-specific CD8+ T cells were tested in vitro for cyt…

0301 basic medicinePulmonary and Respiratory MedicineAdultMaleTetramersTuberculosisHLA-EClinical BiochemistryT lymphocytesDown-RegulationHIV InfectionsHuman leukocyte antigenCD8-Positive T-Lymphocytes+Lymphocyte ActivationMycobacterium tuberculosis03 medical and health sciences0302 clinical medicineAntigenHLA-A2 AntigenmedicineCytotoxic T cellHumansTuberculosisLymphocyte CountMolecular BiologyAntigens BacterialbiologyCoinfectionHistocompatibility Antigens Class ICD8 T lymphocytes HLA-E Mycobacterium tuberculosis HIV tetramersCell BiologyCD8Mycobacterium tuberculosisMiddle Agedbiology.organism_classificationmedicine.diseaseVirology030104 developmental biology030228 respiratory systemCoinfectionHIV-1FemaleCD8Mycobacterium
researchProduct

Immune characterization of the HBHA-specific response in Mycobacterium tuberculosis-infected patients with or without HIV infection.

2017

Introduction RD1-based Interferon-γ Release Assays (IGRAs) cannot distinguish latent from active tuberculosis (TB) disease. Conversely, a positive response to heparin-binding haemagglutinin (HBHA)-based IGRAs, among TB-infected subjects, correlates with Mycobacterium tuberculosis (Mtb) containment and low risk of TB progression. The aim of this study was to characterize HBHA-immune responses in HIV-infected and uninfected subjects with active TB or latent TB infection (LTBI). Methods 49 subjects were prospectively enrolled: 22 HIV-uninfected (13 TB, 9 LTBI) and 27 HIV-infected (12 HIV-TB, 15 HIV-LTBI). Whole blood and peripheral blood mononuclear cells were stimulated with HBHA and RD1 anti…

Genetics and Molecular Biology (all)0301 basic medicineBacterial DiseasesRNA virusesCD4-Positive T-LymphocytesMalePhysiologylcsh:MedicineHIV InfectionsCD8-Positive T-LymphocytesPathology and Laboratory MedicineBiochemistryMemory T cellsWhite Blood CellsImmunodeficiency VirusesInterferonAnimal CellsImmune PhysiologyLectinsMedicine and Health SciencesProspective Studieslcsh:ScienceInnate Immune SystemMultidisciplinarybiologyT CellsInterleukinvirus diseasesMiddle AgedFlow Cytometry3. Good healthActinobacteriaInfectious DiseasesMedical MicrobiologyViral PathogensVirusesDisease ProgressionCytokinesFemaleCellular TypesPathogensmedicine.drugResearch ArticleAdultTuberculosisImmune CellsImmunologyCytotoxic T cellsEnzyme-Linked Immunosorbent AssayPeripheral blood mononuclear cellMicrobiologySettore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICAMycobacterium tuberculosis03 medical and health sciencesInterferon-gammaImmune systemAntigenRetrovirusesmedicineTuberculosisHumansMicrobial PathogensAdult; CD4-Positive T-Lymphocytes; CD8-Positive T-Lymphocytes; Cytokines; Disease Progression; Enzyme-Linked Immunosorbent Assay; Female; Flow Cytometry; HIV Infections; Humans; Interferon-gamma; Lectins; Male; Middle Aged; Prospective Studies; Tuberculosis; Biochemistry Genetics and Molecular Biology (all); Agricultural and Biological Sciences (all)Blood CellsBacteriaLentiviruslcsh:ROrganismsBiology and Life SciencesProteinsHIVCell BiologyMolecular Developmentbiology.organism_classificationmedicine.diseaseTropical DiseasesVirology030104 developmental biologyAgricultural and Biological Sciences (all)Immune SystemImmunologylcsh:QInterferonsCD8Mycobacterium TuberculosisDevelopmental BiologyPLoS ONE
researchProduct