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Nowotny HF, Marchant Seiter T, Ju J, Gottschlich A, Schneider H, Zopp S, Vogel F, Tschaidse L, Auer MK, Lottspeich C, Kobold S, Rothenfusser S, Beuschlein F, Reincke M, Braun L, Reisch N. Major immunophenotypic abnormalities in patients with primary adrenal insufficiency of different etiology. Front Immunol 2023; 14:1275828. [PMID: 38045693 PMCID: PMC10690587 DOI: 10.3389/fimmu.2023.1275828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/27/2023] [Indexed: 12/05/2023] Open
Abstract
Introduction Patients with primary adrenal insufficiency (PAI) suffer from increased risk of infection, adrenal crises and have a higher mortality rate. Such dismal outcomes have been inferred to immune cell dysregulation because of unphysiological cortisol replacement. As the immune landscape of patients with different types of PAI has not been systematically explored, we set out to immunophenotype PAI patients with different causes of glucocorticoid (GC) deficiency. Methods This cross-sectional single center study includes 28 patients with congenital adrenal hyperplasia (CAH), 27 after bilateral adrenalectomy due to Cushing's syndrome (BADx), 21 with Addison's disease (AD) and 52 healthy controls. All patients with PAI were on a stable GC replacement regimen with a median dose of 25 mg hydrocortisone per day. Peripheral blood mononuclear cells were isolated from heparinized blood samples. Immune cell subsets were analyzed using multicolor flow cytometry after four-hour stimulation with phorbol myristate acetate and ionomycin. Natural killer (NK-) cell cytotoxicity and clock gene expression were investigated. Results The percentage of T helper cell subsets was downregulated in AD patients (Th1 p = 0.0024, Th2 p = 0.0157, Th17 p < 0.0001) compared to controls. Cytotoxic T cell subsets were reduced in AD (Tc1 p = 0.0075, Tc2 p = 0.0154) and CAH patients (Tc1 p = 0.0055, Tc2 p = 0.0012) compared to controls. NKCC was reduced in all subsets of PAI patients, with smallest changes in CAH. Degranulation marker CD107a expression was upregulated in BADx and AD, not in CAH patients compared to controls (BADx p < 0.0001; AD p = 0.0002). In contrast to NK cell activating receptors, NK cell inhibiting receptor CD94 was upregulated in BADx and AD, but not in CAH patients (p < 0.0001). Although modulation in clock gene expression could be confirmed in our patient subgroups, major interindividual-intergroup dissimilarities were not detected. Discussion In patients with different etiologies of PAI, distinct differences in T and NK cell-phenotypes became apparent despite the use of same GC preparation and dose. Our results highlight unsuspected differences in immune cell composition and function in PAI patients of different causes and suggest disease-specific alterations that might necessitate disease-specific treatment.
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Affiliation(s)
- Hanna F. Nowotny
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Jing Ju
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Adrian Gottschlich
- Division of Clinical Pharmacology, University Hospital, LMU Munich, Munich, Germany
- Department of Medicine III, LMU University Hospital, LMU Munich, Munich, Germany
| | - Holger Schneider
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Stephanie Zopp
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Frederick Vogel
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Lea Tschaidse
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Matthias K. Auer
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Sebastian Kobold
- Division of Clinical Pharmacology, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Einheit für Klinische Pharmakologie (EKLiP), Helmholtz Munich, Research Center for Environmental Health (HMGU), Neuherberg, Germany
| | - Simon Rothenfusser
- Division of Clinical Pharmacology, University Hospital, LMU Munich, Munich, Germany
- Einheit für Klinische Pharmakologie (EKLiP), Helmholtz Munich, Research Center for Environmental Health (HMGU), Neuherberg, Germany
| | - Felix Beuschlein
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
- Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, Universitätsspital Zürich (USZ) und Universität Zürich (UZH), Zurich, Switzerland
| | - Martin Reincke
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Leah Braun
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
| | - Nicole Reisch
- Department of Medicine IV, LMU University Hospital, LMU Munich, Munich, Germany
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Wawina-Bokalanga T, Vanmechelen B, Lhermitte V, Martí-Carreras J, Vergote V, Koundouno FR, Akoi-Boré J, Thom R, Tipton T, Steeds K, Moussa KB, Amento A, Laenen L, Duraffour S, Gabriel M, Ruibal P, Hall Y, Kader-Kondé M, Günther S, Baele G, Muñoz-Fontela C, Van Weyenbergh J, Carroll MW, Maes P. Human Diversity of Killer Cell Immunoglobulin-Like Receptors and Human Leukocyte Antigen Class I Alleles and Ebola Virus Disease Outcomes. Emerg Infect Dis 2021; 27:76-84. [PMID: 33350932 PMCID: PMC7774578 DOI: 10.3201/eid2701.202177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We investigated the genetic profiles of killer cell immunoglobulin-like receptors (KIRs) in Ebola virus–infected patients. We studied the relationship between KIR–human leukocyte antigen (HLA) combinations and the clinical outcomes of patients with Ebola virus disease (EVD). We genotyped KIRs and HLA class I alleles using DNA from uninfected controls, EVD survivors, and persons who died of EVD. The activating 2DS4–003 and inhibitory 2DL5 genes were significantly more common among persons who died of EVD; 2DL2 was more common among survivors. We used logistic regression analysis and Bayesian modeling to identify 2DL2, 2DL5, 2DS4–003, HLA-B-Bw4-Thr, and HLA-B-Bw4-Ile as probably having a significant relationship with disease outcome. Our findings highlight the importance of innate immune response against Ebola virus and show the association between KIRs and the clinical outcome of EVD.
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Tabellini G, Patrizi O, Dobbs K, Lougaris V, Baronio M, Coltrini D, Plebani A, Badolato R, Notarangelo LD, Parolini S. From Natural Killer Cell Receptor Discovery to Characterization of Natural Killer Cell Defects in Primary Immunodeficiencies. Front Immunol 2019; 10:1757. [PMID: 31396241 PMCID: PMC6668486 DOI: 10.3389/fimmu.2019.01757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/11/2019] [Indexed: 01/09/2023] Open
Abstract
Alessandro Moretta was Professor of Histology at University of Brescia from 1994 to 1997. It was in that period that we met and started a collaboration that continued in the years to follow. He immediately involved us in the production of monoclonal antibodies (mAbs) that allowed the identification and fine characterization of novel receptor molecules that were able to activate or inhibit human Natural Killer cell function, including several antibodies specific for Natural Cytotoxicity Receptor (NCR) and Killer-cell Immunoglobulin-like Receptor (KIR) molecules. These reagents, generated in our laboratory in Brescia, contributed to complete the studies aimed to characterize innate lymphoid NK cells, that had been initiated by Alessandro and his brother Lorenzo in Genoa. Soon, we identified an anti-KIR3DL2 that was subsequently shown to be helpful for the diagnosis and treatment of various forms of cutaneous T cell lymphoma. While in Brescia, Alessandro established a partnership with those of us who were working in the Department of Pediatrics; together, in short time we tackled the goal of studying the role of NK cells in patients with primary immunodeficiencies. This collaboration led to novel discoveries that shed light on the critical role played by NK cells in the immune response against virus and tumors in humans, as best exemplified by our characterization of the molecular mechanisms of impaired control of Epstein-Barr Virus (EBV) infection in patients with X-linked lymphoproliferative (XLP) disease. After Alessandro left Brescia to return to Genoa, our collaboration continued with the same enthusiasm, and even from a distance he remained an extraordinary example of an inspirational and generous mentor. This review is a sign of our gratitude to a mentor and a friend whom we deeply miss.
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Affiliation(s)
- Giovanna Tabellini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Ornella Patrizi
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Kerry Dobbs
- Laboratory of Host Defenses, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Vassilios Lougaris
- Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Manuela Baronio
- Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Daniela Coltrini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Alessandro Plebani
- Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Raffaele Badolato
- Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Luigi D Notarangelo
- Laboratory of Host Defenses, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Silvia Parolini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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Rodig SJ, Gusenleitner D, Jackson DG, Gjini E, Giobbie-Hurder A, Jin C, Chang H, Lovitch SB, Horak C, Weber JS, Weirather JL, Wolchok JD, Postow MA, Pavlick AC, Chesney J, Hodi FS. MHC proteins confer differential sensitivity to CTLA-4 and PD-1 blockade in untreated metastatic melanoma. Sci Transl Med 2018; 10:10/450/eaar3342. [DOI: 10.1126/scitranslmed.aar3342] [Citation(s) in RCA: 282] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/24/2018] [Accepted: 06/29/2018] [Indexed: 12/14/2022]
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Identification of GAD65 AA 114-122 reactive 'memory-like' NK cells in newly diagnosed Type 1 diabetic patients by HLA-class I pentamers. PLoS One 2017; 12:e0189615. [PMID: 29236750 PMCID: PMC5728516 DOI: 10.1371/journal.pone.0189615] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/29/2017] [Indexed: 01/24/2023] Open
Abstract
Type 1 diabetes is an autoimmune disease, in which pancreatic β cells are destroyed by autoreactive T cells in genetically predisposed individuals. Serum beta cell autoantibody specificities have represented the mainstay for classifying diabetes as autoimmune-mediated and for stratifying risk in first-degree relatives. In recent years, approaches were attempted to solve the difficult issue of detecting rare antigen-specific autoreactive T cells and their significance to etiopathogenesis such as the use of the MHC multimer technology. This tool allowed the specific detection of increased percentages of GAD65 autoreactive T cells by means of HLA A*02:01 GAD65 AA 114–122 pentamers in newly diagnosed diabetics. Here we provide evidence that GAD65 AA 114–122 pentamers can depict a GAD65 AA114-122 peptide expandable population of functionally and phenotypically skewed, preliminary characterized CD3-CD8dullCD56+ ‘memory-like’ NK cells in PBMC of newly diagnosed diabetics. Our data suggest that the NK cell subset could bind the HLA class I GAD65 AA 114–122 pentamer through ILT2 inhibitory receptor. CD107a expression revealed increased degranulation of CD3-CD8dullCD56+ NK cells in GAD65 AA 114–122 and FLU peptide expanded peripheral blood mononuclear cells of diabetics following GAD65 AA 114–122 peptide HLA A*02:01 presentation in respect to the unpulsed condition. CD107a expression was enriched in ILT2 positive NK cells. As opposite to basal conditions where similar percentages of CD3-CD56+ILT2+ cells were detected in diabetics and controls, CD3-CD56+CD107a+ and CD3-CD56+ILT2+CD107a+ cells were significantly increased in T1D PBMC either GAD65 AA 114–122 or FLU peptides stimulated after co-culture with GAD65 AA 114–122 pulsed APCs. As control, healthy donor NK cells showed similar degranulation against both GAD65 AA 114–122 pulsed and unpulsed APCs. The pathogenetic significance of the CD3-CD8dullCD56+ ‘memory-like NK cell subset’ with increased response upon secondary challenge in diabetics remains to be elucidated.
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Pesce S, Thoren FB, Cantoni C, Prato C, Moretta L, Moretta A, Marcenaro E. The Innate Immune Cross Talk between NK Cells and Eosinophils Is Regulated by the Interaction of Natural Cytotoxicity Receptors with Eosinophil Surface Ligands. Front Immunol 2017; 8:510. [PMID: 28503177 PMCID: PMC5408020 DOI: 10.3389/fimmu.2017.00510] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 04/13/2017] [Indexed: 01/21/2023] Open
Abstract
Previous studies suggested that the cross talk between NK cells and other cell types is crucial for the regulation of both innate and adaptive immune responses. In the present study, we analyzed the phenotypic and functional outcome of the interaction between resting or cytokine-activated NK cells and eosinophils derived from non-atopic donors. Our results provide the first evidence that a natural cytotoxicity receptor (NCR)/NCR ligand-dependent cross talk between NK cells and eosinophils may be important to upregulate the activation state and the effector function of cytokine-primed NK cells. This interaction also promotes the NK-mediated editing process of dendritic cells that influence the process of Th1 polarization. In turn, this cross talk also resulted in eosinophil activation and acquisition of the characteristic features of antigen-presenting cells. At higher NK/eosinophil ratios, cytokine-primed NK cells were found to kill eosinophils via NKp46 and NKp30, thus suggesting a potential immunoregulatory role for NK cells in dampening inflammatory responses involving eosinophils.
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Affiliation(s)
- Silvia Pesce
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy
| | - Fredrik B Thoren
- Sahlgrenska Cancer Center, University of Gothenburg, Göteborg, Sweden
| | - Claudia Cantoni
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy.,Istituto Giannina Gaslini, Genova, Italy.,Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova, Genova, Italy
| | - Carola Prato
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy
| | - Lorenzo Moretta
- Department of Immunology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Alessandro Moretta
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy.,Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova, Genova, Italy.,Department of Immunology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Emanuela Marcenaro
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy.,Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova, Genova, Italy
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7
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Tabellini G, Vairo D, Scomodon O, Tamassia N, Ferraro RM, Patrizi O, Gasperini S, Soresina A, Giardino G, Pignata C, Lougaris V, Plebani A, Dotta L, Cassatella MA, Parolini S, Badolato R. Impaired natural killer cell functions in patients with signal transducer and activator of transcription 1 (STAT1) gain-of-function mutations. J Allergy Clin Immunol 2017; 140:553-564.e4. [PMID: 28069426 DOI: 10.1016/j.jaci.2016.10.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 09/19/2016] [Accepted: 10/19/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Gain-of-function (GOF) mutations affecting the coiled-coil domain or the DNA-binding domain of signal transducer and activator of transcription 1 (STAT1) cause chronic mucocutaneous candidiasis disease. This condition is characterized by fungal and bacterial infections caused by impaired generation of TH17 cells; meanwhile, some patients with chronic mucocutaneous candidiasis disease might also have viral or intracellular pathogen infections. OBJECTIVE We sought to investigate the effect of STAT1 GOF mutations on the functioning of natural killer (NK) cells. METHODS Because STAT1 is involved in the signaling response to several cytokines, we studied NK cell functional activities and STAT1 signaling in 8 patients with STAT1 GOF mutations. RESULTS Functional analysis of NK cells shows a significant impairment of cytolytic and degranulation activities in patients with STAT1 GOF mutations. Moreover, NK cells from these patients display lower production of IFN-γ in response to IL-15 and reduced proliferation after stimulation with IL-2 or IL-15, suggesting that STAT5 signaling is affected. In addition, signaling studies demonstrate that the increased phosphorylation of STAT1 in response to IFN-α is associated with detectable activation of STAT1 and increased STAT1 binding to the interferon-induced protein with tetratricopeptide repeats 1 (IFIT1) promoter in response to IL-15, whereas STAT5 phosphorylation and DNA binding to IL-2 receptor α (IL2RA) are reduced or not affected in response to the same cytokine. CONCLUSION These observations suggest that persistent activation of STAT1 might affect NK cell proliferation and functional activities.
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Affiliation(s)
- Giovanna Tabellini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Donatella Vairo
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy; Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy
| | - Omar Scomodon
- Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy; Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Nicola Tamassia
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | - Rosalba Monica Ferraro
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy; Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy
| | - Ornella Patrizi
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Sara Gasperini
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | | | - Giuliana Giardino
- Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
| | - Claudio Pignata
- Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
| | - Vassilios Lougaris
- Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy; Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Alessandro Plebani
- Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy; Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Laura Dotta
- Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy; Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy
| | - Marco A Cassatella
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | - Silvia Parolini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Raffaele Badolato
- Institute of Molecular Medicine "Angelo Nocivelli," University of Brescia, Brescia, Italy; Department of Experimental and Clinical Sciences, University of Brescia, Brescia, Italy.
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Della Chiesa M, Pesce S, Muccio L, Carlomagno S, Sivori S, Moretta A, Marcenaro E. Features of Memory-Like and PD-1(+) Human NK Cell Subsets. Front Immunol 2016; 7:351. [PMID: 27683578 PMCID: PMC5021715 DOI: 10.3389/fimmu.2016.00351] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/31/2016] [Indexed: 12/15/2022] Open
Abstract
Human NK cells are distinguished into CD56brightCD16− cells and CD56dimCD16+ cells. These two subsets are conventionally associated with differential functional outcomes and are heterogeneous with respect to the expression of KIR and CD94/NKG2 heterodimers that represent the two major types of HLA-class I-specific receptors. Recent studies indicated that immature CD56bright NK cells, homogeneously expressing the inhibitory CD94/NKG2A receptor, are precursors of CD56dim NK cells that, in turn, during their process of differentiation, lose expression of CD94/NKG2A and subsequentially acquire inhibitory KIRs and LIR-1. The terminally differentiated phenotype of CD56dim cells is marked by the expression of the CD57 molecule that is associated with poor responsiveness to cytokine stimulation, but retained cytolytic capacity. Remarkably, this NKG2A−KIR+LIR-1+CD57+CD56dim NK cell subset when derived from individuals previously exposed to pathogens, such as human cytomegalovirus (HCMV), may contain “memory-like” NK cells. These cells are generally characterized by an upregulation of the activating receptor CD94/NKG2C and a downregulation of the inhibitory receptor Siglec-7. The “memory-like” NK cells are persistent over time and display some hallmarks of adaptive immunity, i.e., clonal expansion, more effective antitumor and antiviral immune responses, longevity, as well as given epigenetic modifications. Interestingly, unknown cofactors associated with HCMV infection may induce the onset of a recently identified fully mature NK cell subset, characterized by marked downregulation of the activating receptors NKp30 and NKp46 and by the unexpected expression of the inhibitory PD-1 receptor. This phenotype correlates with an impaired antitumor NK cell activity that can be partially restored by antibody-mediated disruption of PD-1/PD-L interaction.
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Affiliation(s)
- Mariella Della Chiesa
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova , Genova , Italy
| | - Silvia Pesce
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova , Genova , Italy
| | - Letizia Muccio
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova , Genova , Italy
| | - Simona Carlomagno
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova , Genova , Italy
| | - Simona Sivori
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy; CEBR, Università degli Studi di Genova, Genova, Italy
| | - Alessandro Moretta
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy; CEBR, Università degli Studi di Genova, Genova, Italy
| | - Emanuela Marcenaro
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy; CEBR, Università degli Studi di Genova, Genova, Italy
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Laroni A, Armentani E, Kerlero de Rosbo N, Ivaldi F, Marcenaro E, Sivori S, Gandhi R, Weiner HL, Moretta A, Mancardi GL, Uccelli A. Dysregulation of regulatory CD56 bright NK cells/T cells interactions in multiple sclerosis. J Autoimmun 2016; 72:8-18. [DOI: 10.1016/j.jaut.2016.04.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/15/2016] [Accepted: 04/19/2016] [Indexed: 01/22/2023]
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Pesce S, Greppi M, Tabellini G, Rampinelli F, Parolini S, Olive D, Moretta L, Moretta A, Marcenaro E. Identification of a subset of human natural killer cells expressing high levels of programmed death 1: A phenotypic and functional characterization. J Allergy Clin Immunol 2016; 139:335-346.e3. [PMID: 27372564 DOI: 10.1016/j.jaci.2016.04.025] [Citation(s) in RCA: 343] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/18/2016] [Accepted: 04/19/2016] [Indexed: 01/07/2023]
Abstract
BACKGROUND Programmed death 1 (PD-1) is an immunologic checkpoint that limits immune responses by delivering potent inhibitory signals to T cells on interaction with specific ligands expressed on tumor/virus-infected cells, thus contributing to immune escape mechanisms. Therapeutic PD-1 blockade has been shown to mediate tumor eradication with impressive clinical results. Little is known about the expression/function of PD-1 on human natural killer (NK) cells. OBJECTIVE We sought to clarify whether human NK cells can express PD-1 and analyze their phenotypic/functional features. METHODS We performed multiparametric cytofluorimetric analysis of PD-1+ NK cells and their functional characterization using degranulation, cytokine production, and proliferation assays. RESULTS We provide unequivocal evidence that PD-1 is highly expressed (PD-1bright) on an NK cell subset detectable in the peripheral blood of approximately one fourth of healthy subjects. These donors are always serologically positive for human cytomegalovirus. PD-1 is expressed by CD56dim but not CD56bright NK cells and is confined to fully mature NK cells characterized by the NKG2A-KIR+CD57+ phenotype. Proportions of PD-1bright NK cells were higher in the ascites of a cohort of patients with ovarian carcinoma, suggesting their possible induction/expansion in tumor environments. Functional analysis revealed a reduced proliferative capability in response to cytokines, low degranulation, and impaired cytokine production on interaction with tumor targets. CONCLUSIONS We have identified and characterized a novel subpopulation of human NK cells expressing high levels of PD-1. These cells have the phenotypic characteristics of fully mature NK cells and are increased in patients with ovarian carcinoma. They display low proliferative responses and impaired antitumor activity that can be partially restored by antibody-mediated disruption of PD-1/programmed death ligand interaction.
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Affiliation(s)
- Silvia Pesce
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Marco Greppi
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | | | - Fabio Rampinelli
- Department of Obstetrics and Gynecology, Spedali Civili of Brescia, Brescia, Italy
| | - Silvia Parolini
- Department of Molecular and Translational Medicine, Brescia, Italy
| | - Daniel Olive
- CRCM, Equipe Immunité et Cancer, Inserm, U1068, Institut Paoli-Calmettes, Aix-Marseille Université, Marseille, France
| | - Lorenzo Moretta
- Department of Immunology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Alessandro Moretta
- Department of Experimental Medicine, University of Genoa, Genoa, Italy; Center of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy.
| | - Emanuela Marcenaro
- Department of Experimental Medicine, University of Genoa, Genoa, Italy; Center of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
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Baek HJ, Kim DW, Phan MTT, Kim JS, Yang JH, Choi JI, Lee JJ, Shin MG, Ryang DW, Kim SK, Lee SH, Kook H, Cho D. Comparison of FcRγ-Deficient and CD57+ Natural Killer Cells Between Cord Blood and Adult Blood in the Cytomegalovirus-Endemic Korean Population. Ann Lab Med 2015; 35:423-8. [PMID: 26131414 PMCID: PMC4446581 DOI: 10.3343/alm.2015.35.4.423] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 12/03/2014] [Accepted: 04/02/2015] [Indexed: 12/19/2022] Open
Abstract
Background FcRγ-deficient natural killer (NK) cells (g-NK cells) have been associated with cytomegalovirus (CMV) infection. However, the frequency of g-NK cells in a CMV-endemic area (i.e., Korea) has not yet been studied. We examined the frequency of g-NK cells and expression of CD57 on NK cells in cord blood (CB) and adult blood (AB). Methods Of the 24 AB samples collected, 95.8% (23/24) were CMV IgG+/IgM-, while 100% of the 13 healthy CB samples were CMV IgG+/IgM-. We performed whole-blood flow cytometry assays to analyze intracellular FcRγ and CD3ζ expression of CD3-/CD56dim NK cells from 13 CB and 24 AB samples, and surface CD57 expression on CD3-/CD56dim/CD16+ NK cells from 13 CB and 19 AB samples. Results All CMV seropositive AB samples contained g-NK cells (23/23), and the median proportion of g-NK cells in the CD3-/CD56dim NK cell pool was 35.0% (range: 11-77%). CD57+ NK cells in the CD3-/CD56dim/CD16+ NK cell population were detected in all 19 AB samples tested, but not in any CB samples. Conclusions Our data suggest that g-NK cells and CD57+ NK cells are present at a very high frequency in CMV-seropositive AB, but rare in CMV-naïve CB.
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Affiliation(s)
- Hee Jo Baek
- Department of Pediatrics, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Da-Woon Kim
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea. ; Department of Laboratory Medicine, KS Hospital, Gwangju, Korea
| | - Minh-Trang Thi Phan
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea. ; Center for Creative Biomedical Scientists, Chonnam National University, Gwangju, Korea. ; Research Center for Cancer Immunotherapy, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Ju-Sun Kim
- Research Center for Cancer Immunotherapy, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Ji-Hoon Yang
- Department of Anesthesiology and Pain Medicine, Chonnan National University Medical School and Hospital, Gwangju, Korea
| | - Jeong Il Choi
- Department of Anesthesiology and Pain Medicine, Chonnan National University Medical School and Hospital, Gwangju, Korea
| | - Je-Jung Lee
- Research Center for Cancer Immunotherapy, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Myung-Geun Shin
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Dong-Wook Ryang
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Sang-Ki Kim
- Department of Companion & Laboratory Animal Science, Kongju National University, Yesan, Korea
| | - Seung-Hwan Lee
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Canada
| | - Hoon Kook
- Department of Pediatrics, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Duck Cho
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea. ; Center for Creative Biomedical Scientists, Chonnam National University, Gwangju, Korea. ; Research Center for Cancer Immunotherapy, Chonnam National University Hwasun Hospital, Hwasun, Korea
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Valenzuela F, Papp KA, Pariser D, Tyring SK, Wolk R, Buonanno M, Wang J, Tan H, Valdez H. Effects of tofacitinib on lymphocyte sub-populations, CMV and EBV viral load in patients with plaque psoriasis. BMC DERMATOLOGY 2015; 15:8. [PMID: 25951857 PMCID: PMC4436155 DOI: 10.1186/s12895-015-0025-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 04/20/2015] [Indexed: 12/16/2022]
Abstract
Background Plaque psoriasis is a debilitating skin condition that affects approximately 2% of the adult population and for which there is currently no cure. Tofacitinib is an oral Janus kinase inhibitor that is being investigated for psoriasis. Methods The design of this study has been reported previously (NCT00678210). Patients with moderate to severe chronic plaque psoriasis received tofacitinib (2 mg, 5 mg, or 15 mg) or placebo, twice daily, for 12 weeks. Lymphocyte sub-populations, cytomegalovirus (CMV) and Epstein-Barr virus (EBV) DNA were measured at baseline and up to Week 12. Results Tofacitinib was associated with modest, dose-dependent percentage increases from baseline in median B cell count at Week 4 (24–68%) and Week 12 (18–43%) and percentage reductions from baseline in median natural killer cell count at Week 4 (11–40%). The proportion of patients with detectable CMV and EBV DNA (defined as >0 copies/500 ng total DNA) increased post-baseline in tofacitinib-treated patients. However, multivariate analyses found no relationship between changes in CMV or EBV viral load and changes in lymphocyte sub-populations or tofacitinib treatment. Conclusions Twelve weeks of treatment with tofacitinib had no clinically significant effects on CMV or EBV viral load, suggesting that lymphocyte sub-populations critical to the response to chronic viral infections and viral reactivation were not significantly affected. Replication of these findings during long-term use of tofacitinib will allow confirmation of this observation.
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Affiliation(s)
- Fernando Valenzuela
- Department of Dermatology, Faculty of Medicine, University of Chile and Probity Medical Research, Santiago, Chile.
| | - Kim A Papp
- Clinical Research and Probity Medical Research, Waterloo, ON, Canada.
| | - David Pariser
- Department of Dermatology, Eastern Virginia Medical School and Virginia Clinical Research Inc., Norfolk, VA, USA.
| | - Stephen K Tyring
- Department of Dermatology, University of Texas Medical School, Houston, TX, USA.
| | | | | | - Jeff Wang
- Quintiles, Cambridge, MA, USA. .,Present address: Statistical Consulting & Solutions, LLC, Brookline, MA, USA.
| | | | - Hernan Valdez
- Pfizer Inc, New York, NY, USA. .,Specialty Care Medicines Development Group, Pfizer Inc, 219 E 42nd Street, 7th Floor Room 50, NYO 219/07/01, New York, NY, 10017, USA.
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13
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Tu TC, Brown NK, Kim TJ, Wroblewska J, Yang X, Guo X, Lee SH, Kumar V, Lee KM, Fu YX. CD160 is essential for NK-mediated IFN-γ production. ACTA ACUST UNITED AC 2015; 212:415-29. [PMID: 25711213 PMCID: PMC4354368 DOI: 10.1084/jem.20131601] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Tu et al. generated a novel CD160-deficient mouse and showed impaired NK cell–mediated tumor elimination and IFN-γ production. CD160+ NK cells are functionally distinct in secretion of IFN-γ from their CD160− NK cell counterparts. NK-derived cytokines play important roles for natural killer (NK) function, but how the cytokines are regulated is poorly understood. CD160 is expressed on activated NK or T cells in humans but its function is unknown. We generated CD160-deficient mice to probe its function. Although CD160−/− mice showed no abnormalities in lymphocyte development, the control of NK-sensitive tumors was severely compromised in CD160−/− mice. Surprisingly, the cytotoxicity of NK cells was not impaired, but interferon-γ (IFN-γ) secretion by NK cells was markedly reduced in CD160−/− mice. Functionally targeting CD160 signaling with a soluble CD160-Ig also impaired tumor control and IFN-γ production, suggesting an active role of CD160 signaling. Using reciprocal bone marrow transfer and cell culture, we have identified the intrinsic role of CD160 on NK cells, as well as its receptor on non-NK cells, for regulating cytokine production. To demonstrate sufficiency of the CD160+ NK cell subset in controlling NK-dependent tumor growth, intratumoral transfer of the CD160+ NK fraction led to tumor regression in CD160−/− tumor-bearing mice, indicating demonstrable therapeutic potential for controlling early tumors. Therefore, CD160 is not only an important biomarker but also functionally controls cytokine production by NK cells.
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Affiliation(s)
- Tony C Tu
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Nicholas K Brown
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Tae-Jin Kim
- Department of Pathology, The University of Chicago, Chicago, IL 60637 Global Research Lab, Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 136-705, South Korea
| | - Joanna Wroblewska
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Xuanming Yang
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Xiaohuan Guo
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Seoyun Hyunji Lee
- Department of Pathology, The University of Chicago, Chicago, IL 60637 Global Research Lab, Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 136-705, South Korea
| | - Vinay Kumar
- Department of Pathology, The University of Chicago, Chicago, IL 60637
| | - Kyung-Mi Lee
- Department of Pathology, The University of Chicago, Chicago, IL 60637 Global Research Lab, Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 136-705, South Korea Department of Melanoma Medical Oncology and Immunology, MD Anderson Cancer Center, Houston, TX 77054
| | - Yang-Xin Fu
- Department of Pathology, The University of Chicago, Chicago, IL 60637
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14
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Lugli E, Marcenaro E, Mavilio D. NK Cell Subset Redistribution during the Course of Viral Infections. Front Immunol 2014; 5:390. [PMID: 25177322 PMCID: PMC4132273 DOI: 10.3389/fimmu.2014.00390] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 08/01/2014] [Indexed: 12/24/2022] Open
Abstract
Natural killer (NK) cells are important effectors of innate immunity that play a critical role in the control of human viral infections. Indeed, given their capability to directly recognize virally infected cells without the need of specific antigen presentation, NK cells are on the first line of defense against these invading pathogens. By establishing cellular networks with a variety of cell types such as dendritic cells, NK cells can also amplify anti-viral adaptive immune responses. In turn, viruses evolved and developed several mechanisms to evade NK cell-mediated immune activity. It has been reported that certain viral diseases, including human immunodeficiency virus-1 as well as human cytomegalovirus infections, are associated with a pathologic redistribution of NK cell subsets in the peripheral blood. In particular, it has been observed the expansion of unconventional CD56(neg) NK cells, whose effector functions are significantly impaired as compared to that of conventional CD56(pos) NK cells. In this review, we address the impact of these two chronic viral infections on the functional and phenotypic perturbations of human NK cell compartment.
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Affiliation(s)
- Enrico Lugli
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center , Milan , Italy
| | - Emanuela Marcenaro
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
| | - Domenico Mavilio
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center , Milan , Italy ; Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy ; Department of Medical Biotechnologies and Translational Medicine, University of Milan , Milan , Italy
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15
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Sivori S, Carlomagno S, Pesce S, Moretta A, Vitale M, Marcenaro E. TLR/NCR/KIR: Which One to Use and When? Front Immunol 2014; 5:105. [PMID: 24678311 PMCID: PMC3958761 DOI: 10.3389/fimmu.2014.00105] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/01/2014] [Indexed: 01/06/2023] Open
Abstract
By means of a complex receptor array, Natural killer (NK) cells can recognize variable patterns of ligands and regulate or amplify accordingly their effector functions. Such NK receptors include old, rather conserved, molecules, such as toll-like receptors (TLRs), which enable NK cells to respond both to viral and bacterial products, and newer and evolving molecules, such as killer Ig-like receptors and natural cytotoxicity receptors, which control NK cytotoxicity and are responsible for the elimination of virus-infected or tumor cells without damaging self-unaltered cells. In addition, to rapidly gain new functions NK cells also can acquire new receptors by trogocytosis. Thus, NK cells may have adapted their receptors to different functional needs making them able to play a key role in the modulation of critical events occurring in several compartments of human body (primarily in SLCs but also in decidua during pregnancy). In this review, we will discuss on how the various types of receptors can be used to address specific functions in different immunological contexts.
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Affiliation(s)
- Simona Sivori
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
| | - Simona Carlomagno
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
| | - Silvia Pesce
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
| | - Alessandro Moretta
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
| | - Massimo Vitale
- IRCCS Azienda Ospedaliera Universitaria San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro , Genova , Italy
| | - Emanuela Marcenaro
- Dipartimento di Medicina Sperimentale, Centro di Eccellenza per le Ricerche Biomediche, Università degli Studi di Genova , Genova , Italy
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Della Chiesa M, Marcenaro E, Sivori S, Carlomagno S, Pesce S, Moretta A. Human NK cell response to pathogens. Semin Immunol 2014; 26:152-60. [PMID: 24582551 DOI: 10.1016/j.smim.2014.02.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/04/2014] [Indexed: 12/23/2022]
Abstract
NK cells represent important effectors of the innate immunity in the protection of an individual from microbes. During an NK-mediated anti-microbial response, the final fate (survival or death) of a potential infected target cell depends primarily on the type and the number of receptor/ligand interactions occurring at the effector/target immune synapse. The identification of an array of receptors involved in NK cell triggering has been crucial for a better understanding of the NK cell biology. In this context, NCR play a predominant role in NK cell activation during the process of natural cytotoxicity. Regarding the NK-mediated pathogen recognition and NK cell activation, an emerging concept is represented by the involvement of TLRs and activating KIRs. NK cells express certain TLRs in common with other innate cell types. This would mean that specific TLR ligands are able to promote the simultaneous and synergistic stimulation of these innate cells, providing a coordinated mechanism for regulating the initiation and amplification of immune responses. Evidences have been accumulated indicating that viral infections may have a significant impact on NK cell maturation, promoting the expansion of phenotypically and functionally aberrant NK cell subpopulations. For example, during chronic HIV-infection, an abnormal expansion of a dysfunctional CD56neg NK cell subset has been detected that may explain, at least in part, the defective NK cell-mediated antiviral activity. An analogous imbalance of NK cell subsets has been detected in patients receiving HSCT to cure high risk leukemias and experiencing HCMV infection/reactivation. Remarkably, NK cells developing after CMV reactivation may contain "memory-like" or "long-lived" NK cells that could exert a potent anti-leukemia effect.
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Affiliation(s)
- Mariella Della Chiesa
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Emanuela Marcenaro
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Simona Sivori
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Simona Carlomagno
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Silvia Pesce
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Alessandro Moretta
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy.
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17
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Occurrence of nodular lymphocyte-predominant hodgkin lymphoma in hermansky-pudlak type 2 syndrome is associated to natural killer and natural killer T cell defects. PLoS One 2013; 8:e80131. [PMID: 24302998 PMCID: PMC3841159 DOI: 10.1371/journal.pone.0080131] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 09/29/2013] [Indexed: 01/21/2023] Open
Abstract
Hermansky Pudlak type 2 syndrome (HPS2) is a rare autosomal recessive primary immune deficiency caused by mutations on β3A gene (AP3B1 gene). The defect results in the impairment of the adaptor protein 3 (AP-3) complex, responsible for protein sorting to secretory lysosomes leading to oculo-cutaneous albinism, bleeding disorders and immunodeficiency. We have studied peripheral blood and lymph node biopsies from two siblings affected by HPS2. Lymph node histology showed a nodular lymphocyte predominance type Hodgkin lymphoma (NLPHL) in both HPS2 siblings. By immunohistochemistry, CD8 T-cells from HPS2 NLPHL contained an increased amount of perforin (Prf) + suggesting a defect in the release of this granules-associated protein. By analyzing peripheral blood immune cells we found a significant reduction of circulating NKT cells and of CD56(bright)CD16(-) Natural Killer (NK) cells subset. Functionally, NK cells were defective in their cytotoxic activity against tumor cell lines including Hodgkin Lymphoma as well as in IFN-γ production. This defect was associated with increased baseline level of CD107a and CD63 at the surface level of unstimulated and IL-2-activated NK cells. In summary, these results suggest that a combined and profound defect of innate and adaptive effector cells might explain the susceptibility to infections and lymphoma in these HPS2 patients.
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18
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Balsamo M, Manzini C, Pietra G, Raggi F, Blengio F, Mingari MC, Varesio L, Moretta L, Bosco MC, Vitale M. Hypoxia downregulates the expression of activating receptors involved in NK-cell-mediated target cell killing without affecting ADCC. Eur J Immunol 2013; 43:2756-64. [PMID: 23913266 DOI: 10.1002/eji.201343448] [Citation(s) in RCA: 195] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 06/03/2013] [Accepted: 07/05/2013] [Indexed: 12/21/2022]
Abstract
In certain infection sites or tumor tissues, the disruption of homeostasis can give rise to a hypoxic microenvironment, which, in turn, can alter the function of different immune cell types and favor the progression of the disease. Natural killer (NK) cells are directly involved in the elimination of virus-infected or transformed cells, however it is unknown whether their function is affected by hypoxia or not. In this study, we show that NK cells adapt to a hypoxic environment by upregulating the hypoxia-inducible factor 1α. However, NK cells lose their ability to upregulate the surface expression of the major activating NK-cell receptors (NKp46, NKp30, NKp44, and NKG2D) in response to IL-2 (or other activating cytokines, including IL-15, IL-12, and IL-21). These altered phenotypic features correlate with reduced responses to triggering signals resulting in impaired capability of killing infected or tumor target cells. Remarkably, hypoxia does not significantly alter the surface density and the triggering function of the Fc-γ receptor CD16, thus allowing NK cells to maintain their capability of killing target cells via antibody-dependent cellular cytotoxicity. This finding offers an important clue for exploitation of NK cell in antibody-based immunotherapy of cancer.
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Affiliation(s)
- Mirna Balsamo
- Dipartimento di Medicina Sperimentale, Università di Genova, Genova, Italy
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19
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Montaldo E, Del Zotto G, Della Chiesa M, Mingari MC, Moretta A, De Maria A, Moretta L. Human NK cell receptors/markers: a tool to analyze NK cell development, subsets and function. Cytometry A 2013; 83:702-13. [PMID: 23650273 DOI: 10.1002/cyto.a.22302] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/22/2013] [Accepted: 04/03/2013] [Indexed: 01/09/2023]
Abstract
Natural killer (NK) cells are important components of the innate immunity and play a key role in host defense by virtue of their ability to release cytokines and to mediate cytolytic activity against tumor cells and virus-infected cells. NK cells were first described more than 30 years ago on the basis of their peculiar functional capabilities. Subsequently, thanks to the production of a variety of monoclonal antibodies, it became possible to identify surface receptors and markers expressed by NK cells as well as to characterize their functional properties. Here, we provide a brief historical overview about the discovery of human NK cell receptors and we delineate the main phenotypic features of differentiating and mature NK cells in healthy donors as well as their alterations in certain pathologic conditions.
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Affiliation(s)
- Elisa Montaldo
- Department of Experimental Medicine-DIMES, University of Genova, Genova, Italy
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20
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Müller L, Chehrazi CVE, Henderson MW, Noah TL, Jaspers I. Diesel exhaust particles modify natural killer cell function and cytokine release. Part Fibre Toxicol 2013; 10:16. [PMID: 23618096 PMCID: PMC3637383 DOI: 10.1186/1743-8977-10-16] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 04/13/2013] [Indexed: 11/12/2022] Open
Abstract
Background Natural killer (NK) cells are an important lymphocyte population in the nasal mucosa and play important roles in linking the innate and the adaptive immune response. Their two main functions are direct cell-mediated cytotoxicity and the release of cytokines. They are important during viral infections and cancer. Due to their location in the nasal mucosa, NK cells are likely exposed to inhaled pollutants, such as diesel exhaust. Whether and how exposure to diesel exhaust particles (DEP) affects NK cell function in the context of viral infections has not been investigated. Methods NK cells were isolated from peripheral blood obtained from normal healthy volunteers and subsequently stimulated with the viral mimetic polyinosinic:polycytidylic acid (pI:C), DEP, or pI:C+DEP for 18 hours. NK cells were subsequently analyzed for changes in surface marker expression, cytokine production, gene expression changes, and cytotoxic function using flow cytometry, ELISA, qRT-PCR, and cell-mediated cytotoxicity assay, respectively. Results Stimulation of NK cells with pI:C and pI:C+DEP, but not DEP alone, increased the release of IL-1β, IL-2, IL-4, IL-8, IL-10, IL-12p70, IFN-γ and TNF-α. As compared to pI:C alone or pI:C+DEP, the release of IL-1β, IL-8 and TNF-α was significantly lower after DEP stimulation alone. Stimulation with pI:C alone increased the gene and protein expression of granzyme B and perforin, which was completely blunted by adding DEP. Addition of DEP further reduced CD16 expression in pI:C stimulated cells. Similarly, cell-mediated cytotoxicity was significantly reduced by the addition of DEP. Conclusions In the context of viral infection, DEP potentially reduces NK cells' ability to kill virus-infected host cells, in spite of normal cytokine levels, and this may increase susceptibility to viral infections . This reduction in the potential ability of NK cells to kill virus-infected host cells may increase the susceptibility to viral infections after DEP exposure.
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Harms R, Morsey B, Boyer CW, Fox HS, Sarvetnick N. Methamphetamine administration targets multiple immune subsets and induces phenotypic alterations suggestive of immunosuppression. PLoS One 2012; 7:e49897. [PMID: 23227154 PMCID: PMC3515581 DOI: 10.1371/journal.pone.0049897] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 10/17/2012] [Indexed: 01/24/2023] Open
Abstract
Methamphetamine (Meth) is a widely abused stimulant and its users are at increased risk for multiple infectious diseases. To determine the impact of meth on the immune system, we utilized a murine model that simulates the process of meth consumption in a typical addict. Our phenotypic analysis of leukocytes from this dose escalation model revealed that meth affected key immune subsets. Meth administration led to a decrease in abundance of natural killer (NK) cells and the remaining NK cells possessed a phenotype suggesting reduced responsiveness. Dendritic cells (DCs) and Gr-1high monocytes/macrophages were also decreased in abundance while Gr-1low monocytes/macrophages appear to show signs of perturbation. CD4 and CD8 T cell subsets were affected by methamphetamine, both showing a reduction in antigen-experienced subsets. CD4 T cells also exhibited signs of activation, with increased expression of CD150 on CD226-expressing cells and an expansion of KLRG1+, FoxP3− cells. These results exhibit that meth has the ability to disrupt immune homeostasis and impact key subsets of leukocytes which may leave users more vulnerable to pathogens.
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Affiliation(s)
- Robert Harms
- Department of Surgery-Transplant, University of Nebraska Medical Center, Omaha, Nebraska, United States of America.
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22
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Oakes JL, O'Connor BP, Warg LA, Burton R, Hock A, Loader J, Laflamme D, Jing J, Hui L, Schwartz DA, Yang IV. Ozone enhances pulmonary innate immune response to a Toll-like receptor-2 agonist. Am J Respir Cell Mol Biol 2012; 48:27-34. [PMID: 23002100 DOI: 10.1165/rcmb.2012-0187oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Previous work demonstrated that pre-exposure to ozone primes innate immunity and increases Toll-like receptor-4 (TLR4)-mediated responses to subsequent stimulation with LPS. To explore the pulmonary innate immune response to ozone exposure further, we investigated the effects of ozone in combination with Pam3CYS, a synthetic TLR2/TLR1 agonist. Whole-lung lavage (WLL) and lung tissue were harvested from C57BL/6 mice after exposure to ozone or filtered air, followed by saline or Pam3CYS 24 hours later. Cells and cytokines in the WLL, the surface expression of TLRs on macrophages, and lung RNA genomic expression profiles were examined. We demonstrated an increased WLL cell influx, increased IL-6 and chemokine KC (Cxcl1), and decreased macrophage inflammatory protein (MIP)-1α and TNF-α in response to Pam3CYS as a result of ozone pre-exposure. We also observed the increased cell surface expression of TLR4, TLR2, and TLR1 on macrophages as a result of ozone alone or in combination with Pam3CYS. Gene expression analysis of lung tissue revealed a significant increase in the expression of genes related to injury repair and the cell cycle as a result of ozone alone or in combination with Pam3CYS. Our results extend previous findings with ozone/LPS to other TLR ligands, and suggest that the ozone priming of innate immunity is a general mechanism. Gene expression profiling of lung tissue identified transcriptional networks and genes that contribute to the priming of innate immunity at the molecular level.
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Affiliation(s)
- Judy L Oakes
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045, USA
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Brenu EW, van Driel ML, Staines DR, Ashton KJ, Hardcastle SL, Keane J, Tajouri L, Peterson D, Ramos SB, Marshall-Gradisnik SM. Longitudinal investigation of natural killer cells and cytokines in chronic fatigue syndrome/myalgic encephalomyelitis. J Transl Med 2012; 10:88. [PMID: 22571715 PMCID: PMC3464733 DOI: 10.1186/1479-5876-10-88] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Accepted: 03/15/2012] [Indexed: 12/19/2022] Open
Abstract
Background Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME) is an etiologically unexplained disorder characterised by irregularities in various aspects of the immunological function. Presently, it is unknown whether these immunological changes remain consistent over time. This study investigates Natural Killer (NK) cell cytotoxic activity, NK cell subsets (CD56brightCD16- and CD56dimCD16+) and cytokines, over the course of a12 month period in patients with CFS/ME. Methods The participants in the study comprised 65 (47.2 ± 11.5 years) CFS/ME participants and 21 (45.2 ±9.3 years) non-fatigued controls. Flow cytometry protocols were used to assess NK subsets and NK cytotoxic activity at various time points that included baseline (T1), 6 (T2) and 12 months (T3). Cytokine secretions were measured following mitogenic stimulation of peripheral blood mononuclear cells. Results NK cytotoxic activity was significantly decreased in the CFS/ME patients at T1, T2 and T3 compared to the non-fatigued group. Additionally, in comparison to the non-fatigued controls, the CFS/ME group had significantly lower numbers of CD56brightCD16- NK cells at both T1 and T2. Interestingly, following mitogenic stimulation, cytokine secretion revealed significant increases in IL-10, IFN-γ and TNF-α at T1 in the CFS/ME group. A significant decrease was observed at T2 in the CFS/ME group for IL-10 and IL-17A while at T3, IL-2 was increased in the CFS/ME group in comparison to the non-fatigued controls. Overall cytotoxic activity was significantly decreased at T3 compared to T1 and T2. CD56brightCD16- NK cells were much lower at T2 compared to T1 and T3. IL-10 and IL-17A secretion was elevated at T2 in comparison to T1 and T3. Conclusion These results confirm decreases in immune function in CFS/ME patients, suggesting an increased susceptibility to viral and other infections. Furthermore, NK cytotoxic activity may be a suitable biomarker for diagnosing CFS/ME as it was consistently decreased during the course of the 12 months study.
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Affiliation(s)
- Ekua W Brenu
- Population Health and Neuroimmunology Unit, Bond University, Robina, QLD, Australia.
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Identification and characterization of equine herpesvirus type 1 pUL56 and its role in virus-induced downregulation of major histocompatibility complex class I. J Virol 2012; 86:3554-63. [PMID: 22278226 DOI: 10.1128/jvi.06994-11] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Major histocompatibility complex class I (MHC-I) molecules play an important role in host immunity to infection by presenting antigenic peptides to cytotoxic T lymphocytes (CTLs), which recognize and destroy virus-infected cells. Members of the Herpesviridae have developed multiple mechanisms to avoid CTL recognition by virtue of downregulation of MHC-I on the cell surface. We report here on an immunomodulatory protein involved in this process, pUL56, which is encoded by ORF1 of equine herpesvirus type 1 (EHV-1), an alphaherpesvirus. We show that EHV-1 pUL56 is a phosphorylated early protein which is expressed as different forms and predominantly localizes to Golgi membranes. In addition, the transmembrane (TM) domain of the type II membrane protein was shown to be indispensable for correct subcellular localization and a proper function. pUL56 by itself is not functional with respect to interference with MHC-I and likely needs another unidentified viral protein(s) to perform this action. Surprisingly, pUL49.5, an inhibitor of the transporter associated with antigen processing (TAP) and encoded by EHV-1 and related viruses, appeared not to be required for pUL56-induced early MHC-I downmodulation in infected cells. In conclusion, our data identify a new immunomodulatory protein, pUL56, involved in MHC-I downregulation which is unable to perform its function outside the context of viral infection.
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