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Amodio G, Mandelli A, Curto R, Rancoita PMV, Stabilini A, Bonfanti R, de Pellegrin M, Bosi E, Di Serio C, Battaglia M, Gregori S. Altered Frequency and Phenotype of HLA-G-Expressing DC-10 in Type 1 Diabetes Patients at Onset and in Subjects at Risk to Develop the Disease. Front Immunol 2021; 12:750162. [PMID: 34659254 PMCID: PMC8517474 DOI: 10.3389/fimmu.2021.750162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/06/2021] [Indexed: 01/21/2023] Open
Abstract
Type 1 diabetes (T1D) is a chronic autoimmune disease resulting in progressive destruction of β-cells. Several factors affecting lymphocyte and antigen-presenting cells, including dendritic cells (DCs), contribute to defective maintenance of tolerance in T1D. DC-10 are a subset of human DCs involved in IL-10-mediated tolerance. A precise monitoring of DC-10 in the peripheral blood is possible thanks to the discovery of specific biomarkers. DC-10, being cells that naturally express HLA-G, may be used for the appropriate staging of the disease. By enumerating and phenotypically characterizing DC-10 in the peripheral blood of subjects at different stages of T1D development-first-degree relatives (FDRs) of T1D patients, without (Abneg) or with (Abpos) autoantibodies, T1D patients at onset, and age-matched healthy controls (HCs)-we showed that DC-10 contain a high proportion of HLA-G-expressing cells as compared with monocytes. We reported that a low frequency of DC-10 during disease development is paralleled with the increased proportion of pro-inflammatory cDC2 cells. Moreover, DC-10 number and phenotype differ from Abneg FDRs, Abpos FDRs, and T1D patients compared with HCs, and DC-10 from T1D patients express low levels of CD83. Finally, multiple regression analysis, considering DC-10 and HLA-G-related parameters, showed that Abneg FDRs are more similar to subjects with autoimmunity than to HCs. This is the first demonstration that impairment in DC-10 number and phenotype, specifically CD83 expression, is associated with risk of developing T1D, suggesting a possible use of CD83+ DC-10 to stratify individuals at risk of T1D in conjunction with classical prognostic factors.
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Affiliation(s)
- Giada Amodio
- Mechanisms of Peripheral Tolerance Unit, San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
| | - Alessandra Mandelli
- Immune-Mediated Diseases Unit: From Pathogenesis to Treatment, Diabetes Research Institute (DRI), Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Rosalia Curto
- Mechanisms of Peripheral Tolerance Unit, San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
| | - Paola M. V. Rancoita
- University Center for Statistics in the Biomedical Sciences (CUSSB), Vita-Salute San Raffaele University, Milan, Italy
| | - Angela Stabilini
- Immune-Mediated Diseases Unit: From Pathogenesis to Treatment, Diabetes Research Institute (DRI), Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Riccardo Bonfanti
- Immune-Mediated Diseases Unit: From Pathogenesis to Treatment, Diabetes Research Institute (DRI), Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Department of Pediatrics and Neonatology, IRCCS San Raffaele Hospital, Milan, Italy
| | | | - Emanuele Bosi
- Immune-Mediated Diseases Unit: From Pathogenesis to Treatment, Diabetes Research Institute (DRI), Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Department of Internal Medicine, IRCCS San Raffaele Hospital, Milan, Italy
- TrialNet Clinical Center, IRCCS San Raffaele Hospital, Milan, Italy
| | - Clelia Di Serio
- University Center for Statistics in the Biomedical Sciences (CUSSB), Vita-Salute San Raffaele University, Milan, Italy
| | - Manuela Battaglia
- Immune-Mediated Diseases Unit: From Pathogenesis to Treatment, Diabetes Research Institute (DRI), Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Silvia Gregori
- Mechanisms of Peripheral Tolerance Unit, San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
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Ben Azzouz E, Boumaza A, Mezouar S, Bardou M, Carlini F, Picard C, Raoult D, Mège JL, Desnues B. Tropheryma whipplei Increases Expression of Human Leukocyte Antigen-G on Monocytes to Reduce Tumor Necrosis Factor and Promote Bacterial Replication. Gastroenterology 2018; 155:1553-1563. [PMID: 30076840 DOI: 10.1053/j.gastro.2018.07.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 07/10/2018] [Accepted: 07/27/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS Infection with Tropheryma whipplei has a range of effects-some patients can be chronic carriers without developing any symptoms, whereas others can develop systemic Whipple disease, characterized by a lack a protective inflammatory immune response. Alterations in HLA-G function have been associated with several diseases. We investigated the role of HLA-G during T whipplei infection. METHODS Sera, total RNA, and genomic DNA were collected from peripheral blood from 22 patients with classic Whipple's disease, 19 patients with localized T whipplei infections, and 21 asymptomatic carriers. Levels of soluble HLA-G in sera were measured by enzyme-linked immuosorbent assay, and expressions of HLA-G and its isoforms were monitored by real-time polymerase chain reaction. HLA-G alleles were identified and compared with a population of voluntary bone marrow donors. Additionally, monocytes from healthy subjects were stimulated with T whipplei, and HLA-G expression was monitored by real-time polymerase chain reaction and flow cytometry. Bacterial replication was assessed by polymerase chain reaction in the presence of HLA-G or inhibitor of tumor necrosis factor (TNF) (etanercept). RESULTS HLA-G mRNAs and levels of soluble HLA-G were significantly increased in sera from patients with chronic T whipplei infection compared with sera from asymptomatic carriers and control individuals. No specific HLA-G haplotypes were associated with disease or T whipplei infection. However, T whipplei infection of monocytes induced expression of HLA-G, which was associated with reduced secretion of TNF compared with noninfected monocytes. A neutralizing antibody against HLA-G increased TNF secretion by monocytes in response to T whipplei, and a TNF inhibitor promoted bacteria replication. CONCLUSIONS Levels of HLA-G are increased in sera from patients with T whipplei tissue infections, associated with reduced production of TNF by monocytes. This might promote bacteria colonization in patients.
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Affiliation(s)
- Eya Ben Azzouz
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | - Asma Boumaza
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | - Soraya Mezouar
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | - Matthieu Bardou
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | | | - Christophe Picard
- Aix-Marseille Univ, CNRS, EFS, ADES UMR 7268, Marseille, France; Laboratoire d'immunogénétique, Établissement Français du Sang Provence Alpes Côte d'Azur Corse, Marseille, France
| | - Didier Raoult
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | - Jean-Louis Mège
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France
| | - Benoit Desnues
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Mediterranee Infection, Marseille, France.
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Saurabh A, Chakraborty S, Kumar P, Mohan A, Bhatnagar AK, Rishi N, Mitra DK. Inhibiting HLA-G restores IFN-γ and TNF-α producing T cell in pleural Tuberculosis. Tuberculosis (Edinb) 2018; 109:69-79. [PMID: 29559123 DOI: 10.1016/j.tube.2018.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 12/22/2017] [Accepted: 01/28/2018] [Indexed: 01/19/2023]
Abstract
Human Leukocyte Antigen-G (HLA-G), a non-classical, class Ib molecule, has been shown to mediate immunoregulatory functions by inducing apoptosis, inhibits cytotoxicity and differentiation by modulating cytokine secretion. Due to its immune-suppressive function, it facilitates tolerance in feto-maternal interface and transplantation. In contrary, it favours immune evasion of microbes and tumors by inhibiting immune and inflammatory responses. In Tuberculosis (TB), we previously reported differential expression of HLA-G and its receptor Ig-like transcript -2 (ILT-2) in disseminated vs. localized Tuberculosis. The present study explores the impact of HLA-G inhibition on the function of T cells and monocytes, in TB Pleural Effusion (PE), a localized form of TB. Blocking of HLA-G resulted in significant increase in IFN-γ and TNF-α production by CD3+ T cells. Additionally, we observed that HLA-G influences the apoptosis and cytotoxic effect of T cells from TB- PE patients. Next, we checked the impact of interaction between HLA-G and ILT-4 receptor in monocytes derived from TB-PE patients upon blocking and observed significant increase in IFN-γ production. The present study reveals for the first time HLA-G mediated suppression of Th1 cytokines, especially, IFN-γ and TNF-α in TB-PE patients.
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Affiliation(s)
- Abhinav Saurabh
- Department of Transplant Immunology & Immunogenetics, All India Institute of Medical Sciences, New Delhi, India; Amity Institute of Virology & Immunology, Amity University, Noida, Uttar Pradesh, India
| | - Sushmita Chakraborty
- Department of Transplant Immunology & Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Prabin Kumar
- Department of Transplant Immunology & Immunogenetics, All India Institute of Medical Sciences, New Delhi, India; Amity Institute of Virology & Immunology, Amity University, Noida, Uttar Pradesh, India
| | - Anant Mohan
- Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, New Delhi, India
| | - Anuj K Bhatnagar
- Rajan Babu Institute for Pulmonary Medicine and Tuberculosis, GTB Nagar, Delhi, India
| | - Narayan Rishi
- Amity Institute of Virology & Immunology, Amity University, Noida, Uttar Pradesh, India
| | - Dipendra Kumar Mitra
- Department of Transplant Immunology & Immunogenetics, All India Institute of Medical Sciences, New Delhi, India.
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Hölzemer A, Garcia-Beltran WF, Altfeld M. Natural Killer Cell Interactions with Classical and Non-Classical Human Leukocyte Antigen Class I in HIV-1 Infection. Front Immunol 2017; 8:1496. [PMID: 29184550 PMCID: PMC5694438 DOI: 10.3389/fimmu.2017.01496] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/24/2017] [Indexed: 11/23/2022] Open
Abstract
Natural killer (NK) cells are effector lymphocytes of the innate immune system that are able to mount a multifaceted antiviral response within hours following infection. This is achieved through an array of cell surface receptors surveilling host cells for alterations in human leukocyte antigen class I (HLA-I) expression and other ligands as signs of viral infection, malignant transformation, and cellular stress. This interaction between HLA-I ligands and NK-cell receptor is not only important for recognition of diseased cells but also mediates tuning of NK-cell-effector functions. HIV-1 alters the expression of HLA-I ligands on infected cells, rendering them susceptible to NK cell-mediated killing. However, over the past years, various HIV-1 evasion strategies have been discovered to target NK-cell-receptor ligands and allow the virus to escape from NK cell-mediated immunity. While studies have been mainly focusing on the role of polymorphic HLA-A, -B, and -C molecules, less is known about how HIV-1 affects the more conserved, non-classical HLA-I molecules HLA-E, -G, and -F. In this review, we will focus on the recent progress in understanding the role of non-classical HLA-I ligands in NK cell-mediated recognition of HIV-1-infected cells.
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Affiliation(s)
- Angelique Hölzemer
- First Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel-Riems, Hamburg, Germany
| | | | - Marcus Altfeld
- German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel-Riems, Hamburg, Germany.,Institute for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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