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Ossart J, Moreau A, Autrusseau E, Ménoret S, Martin JC, Besnard M, Ouisse LH, Tesson L, Flippe L, Kisand K, Peterson P, Hubert FX, Anegon I, Josien R, Guillonneau C. Breakdown of Immune Tolerance in AIRE-Deficient Rats Induces a Severe Autoimmune Polyendocrinopathy-Candidiasis-Ectodermal Dystrophy-like Autoimmune Disease. J Immunol 2018; 201:874-887. [PMID: 29959280 DOI: 10.4049/jimmunol.1701318] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 06/02/2018] [Indexed: 12/31/2022]
Abstract
Autoimmune regulator (AIRE) deficiency in humans induces a life-threatening generalized autoimmune disease called autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED), and no curative treatments are available. Several models of AIRE-deficient mice have been generated, and although they have been useful in understanding the role of AIRE in central tolerance, they do not reproduce accurately the APECED symptoms, and thus there is still a need for an animal model displaying APECED-like disease. We assessed, in this study, the potential of the rat as an accurate model for APECED. In this study, we demonstrate that in rat, AIRE is expressed by MHC class II (MCH-II)+ and MHC-II- medullary thymic epithelial cells in thymus and by CD4int conventional dendritic cells in periphery. To our knowledge, we generated the first AIRE-deficient rat model using zinc-finger nucleases and demonstrated that they display several of the key symptoms of APECED disease, including alopecia, skin depigmentation, and nail dystrophy, independently of the genetic background. We observed severe autoimmune lesions in a large spectrum of organs, in particular in the pancreas, and identified several autoantibodies in organs and cytokines such as type I IFNs and IL-17 at levels similar to APECED. Finally, we demonstrated a biased Ab response to IgG1, IgM, and IgA isotypes. Altogether, our data demonstrate that AIRE-deficient rat is a relevant APECED animal model, opening new opportunity to test curative therapeutic treatments.
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Affiliation(s)
- Jason Ossart
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Anne Moreau
- Anatomie et Cytologie Pathologiques, CHU Nantes, 44093 Nantes, France
| | - Elodie Autrusseau
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Séverine Ménoret
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France.,Transgenesis Rat Immunophenomic Platform, INSERM 1064 and SFR Francois Bonamy, CNRS UMS3556, 44093 Nantes, France
| | - Jérôme C Martin
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Marine Besnard
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Laure-Hélène Ouisse
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France.,Transgenesis Rat Immunophenomic Platform, INSERM 1064 and SFR Francois Bonamy, CNRS UMS3556, 44093 Nantes, France
| | - Laurent Tesson
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France.,Transgenesis Rat Immunophenomic Platform, INSERM 1064 and SFR Francois Bonamy, CNRS UMS3556, 44093 Nantes, France
| | - Léa Flippe
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Kai Kisand
- Molecular Pathology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia; and
| | - Pärt Peterson
- Molecular Pathology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia; and
| | - François-Xavier Hubert
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
| | - Ignacio Anegon
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France.,Transgenesis Rat Immunophenomic Platform, INSERM 1064 and SFR Francois Bonamy, CNRS UMS3556, 44093 Nantes, France
| | - Régis Josien
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France.,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France.,Laboratoire d'Immunologie, CHU Nantes, 44093 Nantes, France
| | - Carole Guillonneau
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM Université de Nantes, 44093 Nantes, France; .,Institut de Transplantation Urologie Néphrologie, CHU Nantes, 44093 Nantes, France
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2
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Martin JCJ, Bériou G, Heslan M, Chauvin C, Utriainen L, Aumeunier A, Scott CL, Mowat A, Cerovic V, Houston SA, Leboeuf M, Hubert FX, Hémont C, Merad M, Milling S, Josien R. Interleukin-22 binding protein (IL-22BP) is constitutively expressed by a subset of conventional dendritic cells and is strongly induced by retinoic acid. Mucosal Immunol 2014; 7:101-13. [PMID: 23653115 PMCID: PMC4291114 DOI: 10.1038/mi.2013.28] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 04/08/2013] [Indexed: 02/04/2023]
Abstract
Interleukin-22 (IL-22) is mainly produced at barrier surfaces by T cells and innate lymphoid cells and is crucial to maintain epithelial integrity. However, dysregulated IL-22 action leads to deleterious inflammation and is involved in diseases such as psoriasis, intestinal inflammation, and cancer. IL-22 binding protein (IL-22BP) is a soluble inhibitory IL-22 receptor and may represent a crucial regulator of IL-22. We show both in rats and mice that, in the steady state, the main source of IL-22BP is constituted by a subset of conventional dendritic cells (DCs) in lymphoid and non-lymphoid tissues. In mouse intestine, IL-22BP was specifically expressed in lamina propria CD103(+)CD11b(+) DC. In humans, IL-22BP was expressed in immature monocyte-derived DC and strongly induced by retinoic acid but dramatically reduced upon maturation. Our data suggest that a subset of immature DCs may actively participate in the regulation of IL-22 activity in the gut by producing high levels of IL-22BP.
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Affiliation(s)
- JCJ Martin
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France,CHU Nantes, Laboratoire d’immunologie, Nantes, F-44000, France,Université de Nantes, Faculté de Médecine, Nantes, F-44000, France
| | - G Bériou
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France
| | - M Heslan
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France
| | - C Chauvin
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France
| | - L Utriainen
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - A Aumeunier
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - CL Scott
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - A Mowat
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - V Cerovic
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - SA Houston
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - M Leboeuf
- Department of Gene and Cell medicine and the Department of Medicine, Mount Sinai School of Medicine, New York 10029, USA
| | - FX Hubert
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France,Université de Nantes, Faculté de Médecine, Nantes, F-44000, France
| | - C Hémont
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France,CHU Nantes, Laboratoire d’immunologie, Nantes, F-44000, France,Université de Nantes, Faculté de Médecine, Nantes, F-44000, France
| | - M Merad
- Department of Gene and Cell medicine and the Department of Medicine, Mount Sinai School of Medicine, New York 10029, USA
| | - S Milling
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - R Josien
- INSERM Center of Research in Transplantation and Immunology, UMR1064, Nantes, F - 44000, France,CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F-44000, France,CHU Nantes, Laboratoire d’immunologie, Nantes, F-44000, France,Université de Nantes, Faculté de Médecine, Nantes, F-44000, France
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Anjubault T, Martin J, Hubert FX, Chauvin C, Heymann D, Josien R. Constitutive expression of TNF-related activation-induced cytokine (TRANCE)/receptor activating NF-κB ligand (RANK)-L by rat plasmacytoid dendritic cells. PLoS One 2012; 7:e33713. [PMID: 22428075 PMCID: PMC3302772 DOI: 10.1371/journal.pone.0033713] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 02/15/2012] [Indexed: 02/02/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a subset of DCs whose major function relies on their capacity to produce large amount of type I IFN upon stimulation via TLR 7 and 9. This function is evolutionary conserved and place pDC in critical position in the innate immune response to virus. Here we show that rat pDC constitutively express TNF-related activation-induced cytokine (TRANCE) also known as Receptor-activating NF-κB ligand (RANKL). TRANCE/RANKL is a member of the TNF superfamily which plays a central role in osteoclastogenesis through its interaction with its receptor RANK. TRANCE/RANK interaction are also involved in lymphoid organogenesis as well as T cell/DC cross talk. Unlike conventional DC, rat CD4high pDC were shown to constitutively express TRANCE/RANKL both at the mRNA and the surface protein level. TRANCE/RANKL was also induced on the CD4low subsets of pDC following activation by CpG. The secreted form of TRANCE/RANKL was also produced by rat pDC. Of note, levels of mRNA, surface and secreted TRANCE/RANKL expression were similar to that observed for activated T cells. TRANCE/RANKL expression was found on pDC in all lymphoid organs as well blood and BM with a maximum expression in mesenteric lymph nodes. Despite this TRANCE/RANKL expression, we were unable to demonstrate in vitro osteoclastogenesis activity for rat pDC. Taken together, these data identifies pDC as novel source of TRANCE/RANKL in the immune system.
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Affiliation(s)
- Thomas Anjubault
- INSERM UMR 1064, Nantes, France
- CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France
| | - Jérôme Martin
- INSERM UMR 1064, Nantes, France
- CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France
- CHU Nantes, Laboratoire d'Immunologie, Nantes, France
| | - François-Xavier Hubert
- INSERM UMR 1064, Nantes, France
- CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France
| | - Camille Chauvin
- INSERM UMR 1064, Nantes, France
- CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France
| | - Dominique Heymann
- INSERM UMR 791, Nantes, France
- Université de Nantes, Faculté de Médecine, Nantes, France
| | - Régis Josien
- INSERM UMR 1064, Nantes, France
- CHU Nantes, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France
- CHU Nantes, Laboratoire d'Immunologie, Nantes, France
- Université de Nantes, Faculté de Médecine, Nantes, France
- * E-mail:
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Hubert FX, Kinkel SA, Davey GM, Phipson B, Mueller SN, Liston A, Proietto AI, Cannon PZF, Forehan S, Smyth GK, Wu L, Goodnow CC, Carbone FR, Scott HS, Heath WR. Aire regulates the transfer of antigen from mTECs to dendritic cells for induction of thymic tolerance. Blood 2011; 118:2462-72. [PMID: 21505196 DOI: 10.1182/blood-2010-06-286393] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
To investigate the role of Aire in thymic selection, we examined the cellular requirements for generation of ovalbumin (OVA)-specific CD4 and CD8 T cells in mice expressing OVA under the control of the rat insulin promoter. Aire deficiency reduced the number of mature single-positive OVA-specific CD4(+) or CD8(+) T cells in the thymus, independent of OVA expression. Importantly, it also contributed in 2 ways to OVA-dependent negative selection depending on the T-cell type. Aire-dependent negative selection of OVA-specific CD8 T cells correlated with Aire-regulated expression of OVA. By contrast, for OVA-specific CD4 T cells, Aire affected tolerance induction by a mechanism that operated independent of the level of OVA expression, controlling access of antigen presenting cells to medullary thymic epithelial cell (mTEC)-expressed OVA. This study supports the view that one mechanism by which Aire controls thymic negative selection is by regulating the indirect presentation of mTEC-derived antigens by thymic dendritic cells. It also indicates that mTECs can mediate tolerance by direct presentation of Aire-regulated antigens to both CD4 and CD8 T cells.
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Affiliation(s)
- François-Xavier Hubert
- Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
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Ko HJ, Kinkel SA, Hubert FX, Nasa Z, Chan J, Siatskas C, Hirubalan P, Toh BH, Scott HS, Alderuccio F. Transplantation of autoimmune regulator-encoding bone marrow cells delays the onset of experimental autoimmune encephalomyelitis. Eur J Immunol 2010; 40:3499-509. [PMID: 21108470 DOI: 10.1002/eji.201040679] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 08/12/2010] [Accepted: 09/02/2010] [Indexed: 01/04/2023]
Abstract
The autoimmune regulator (AIRE) promotes "promiscuous" expression of tissue-restricted antigens (TRA) in thymic medullary epithelial cells to facilitate thymic deletion of autoreactive T-cells. Here, we show that AIRE-deficient mice showed an earlier development of myelin oligonucleotide glycoprotein (MOG)-induced experimental autoimmune encephalomyelitis (EAE). To determine the outcome of ectopic Aire expression, we used a retroviral transduction system to over-express Aire in vitro, in cell lines and in bone marrow (BM). In the cell lines that included those of thymic medullary and dendritic cell origin, ectopically expressed Aire variably promoted expression of TRA including Mog and Ins2 (proII) autoantigens associated, respectively, with the autoimmune diseases multiple sclerosis and type 1 diabetes. BM chimeras generated from BM transduced with a retrovirus encoding Aire displayed elevated levels of Mog and Ins2 expression in thymus and spleen. Following induction of EAE with MOG(35-55), transplanted mice displayed significant delay in the onset of EAE compared with control mice. To our knowledge, this is the first example showing that in vivo ectopic expression of AIRE can modulate TRA expression and alter autoimmune disease development.
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Affiliation(s)
- Hyun-Ja Ko
- Department of Immunology, Central Clinical School, Monash University, Melbourne, VIC, Australia
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6
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Campbell IK, Kinkel SA, Drake SF, van Nieuwenhuijze A, Hubert FX, Tarlinton DM, Heath WR, Scott HS, Wicks IP. Autoimmune regulator controls T cell help for pathogenetic autoantibody production in collagen-induced arthritis. Arthritis Rheum 2009; 60:1683-93. [PMID: 19479827 DOI: 10.1002/art.24501] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
OBJECTIVE Autoimmune regulator (Aire) promotes the ectopic expression of tissue-restricted antigens in medullary thymic epithelial cells (mTECs), leading to negative selection of autoreactive T cells. This study was undertaken to determine whether loss of central tolerance renders Aire-deficient (Aire-/-) mice more susceptible to the induction of autoimmune arthritis. METHODS Medullary TECs were isolated from Aire-/- and wild-type C57BL/6 mice for gene expression analysis. Collagen-induced arthritis (CIA) was elicited by injection of chick type II collagen (CII) in adjuvant. Cellular and humoral immune responses to CII were evaluated. Chimeric mice were created by reconstituting lymphocyte-deficient mice with either Aire-/- or wild-type CD4 T cells and wild-type B cells. RESULTS Wild-type, but not Aire-/-, mTECs expressed the CII gene Col2a1. Aire-/- mice developed more rapid and severe CIA, showing elevated serum anti-CII IgG levels, with earlier switching to arthritogenic IgG subclasses. No evidence was found of enhanced T cell responsiveness to CII in Aire-/- mice; however, Aire-/- CD4 T cells were more efficient at stimulating wild-type B cells to produce anti-CII IgG following immunization of chimeric mice with CII. CONCLUSION Our findings indicate that Aire-dependent expression of CII occurs in mTECs, implying that there is central tolerance to self antigens found in articular cartilage. Reduced central tolerance to CII in Aire-/- mice manifests as increased CD4 T cell help to B cells for cross-reactive autoantibody production and enhanced CIA. Aire and central tolerance help prevent cross-reactive autoimmune responses to CII initiated by environmental stimuli and limit spontaneous autoimmunity.
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Affiliation(s)
- Ian K Campbell
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
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7
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Hubert FX, Kinkel SA, Crewther PE, Cannon PZF, Webster KE, Link M, Uibo R, O'Bryan MK, Meager A, Forehan SP, Smyth GK, Mittaz L, Antonarakis SE, Peterson P, Heath WR, Scott HS. Aire-deficient C57BL/6 mice mimicking the common human 13-base pair deletion mutation present with only a mild autoimmune phenotype. J Immunol 2009; 182:3902-18. [PMID: 19265170 DOI: 10.4049/jimmunol.0802124] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Autoimmune regulator (AIRE) is an important transcription regulator that mediates a role in central tolerance via promoting the "promiscuous" expression of tissue-specific Ags in the thymus. Although several mouse models of Aire deficiency have been described, none has analyzed the phenotype induced by a mutation that emulates the common 13-bp deletion in human APECED (autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy) by disrupting the first plant homeodomain in exon 8. Aire-deficient mice with a corresponding mutation showed some disturbance of the medullary epithelial compartment, but at the phenotypic level their T cell compartment appeared relatively normal in the thymus and periphery. An increase in the number of activated T cells was evident, and autoantibodies against several organs were detected. At the histological level, lymphocytic infiltration of several organs indicated the development of autoimmunity, although symptoms were mild and the quality of life for Aire-deficient mice appeared equivalent to wild-type littermates, with the exception of male infertility. Vbeta and CDR3 length analysis suggested that each Aire-deficient mouse developed its own polyclonal autoimmune repertoire. Finally, given the prevalence of candidiasis in APECED patients, we examined the control of infection with Candida albicans in Aire-deficient mice. No increase in disease susceptibility was found for either oral or systemic infection. These observations support the view that additional genetic and/or environmental factors contribute substantially to the overt nature of autoimmunity associated with Aire mutations, even for mutations identical to those found in humans with APECED.
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Affiliation(s)
- François-Xavier Hubert
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
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8
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Irla M, Hugues S, Gill J, Nitta T, Hikosaka Y, Williams IR, Hubert FX, Scott HS, Takahama Y, Holländer GA, Reith W. Autoantigen-specific interactions with CD4+ thymocytes control mature medullary thymic epithelial cell cellularity. Immunity 2008; 29:451-63. [PMID: 18799151 DOI: 10.1016/j.immuni.2008.08.007] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 07/18/2008] [Accepted: 08/28/2008] [Indexed: 11/19/2022]
Abstract
Medullary thymic epithelial cells (mTECs) are specialized for inducing central immunological tolerance to self-antigens. To accomplish this, mTECs must adopt a mature phenotype characterized by expression of the autoimmune regulator Aire, which activates the transcription of numerous genes encoding tissue-restricted self-antigens. The mechanisms that control mature Aire(+) mTEC development in the postnatal thymus remain poorly understood. We demonstrate here that, although either CD4(+) or CD8(+) thymocytes are sufficient to sustain formation of a well-defined medulla, expansion of the mature mTEC population requires autoantigen-specific interactions between positively selected CD4(+) thymocytes bearing autoreactive T cell receptor (TCR) and mTECs displaying cognate self-peptide-MHC class II complexes. These interactions also involve the engagement of CD40 on mTECs by CD40L induced on the positively selected CD4(+) thymocytes. This antigen-specific TCR-MHC class II-mediated crosstalk between CD4(+) thymocytes and mTECs defines a unique checkpoint in thymic stromal development that is pivotal for generating a mature mTEC population competent for ensuring central T cell tolerance.
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Affiliation(s)
- Magali Irla
- University of Geneva Medical School, CMU, 1 Rue Michel-Servet, CH-1211, Geneva, Switzerland
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9
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Hubert FX, Kinkel SA, Webster KE, Cannon P, Crewther PE, Proeitto AI, Wu L, Heath WR, Scott HS. A specific anti-Aire antibody reveals aire expression is restricted to medullary thymic epithelial cells and not expressed in periphery. J Immunol 2008; 180:3824-32. [PMID: 18322189 DOI: 10.4049/jimmunol.180.6.3824] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy is an autoimmune disorder caused by mutations in the autoimmune regulator gene AIRE. We examined the expression of Aire in different organs (thymus, spleen, and lymph nodes) in C57BL/6 mice, using a novel rat mAb, specific for murine Aire. Using flow cytometry, directly fluorochrome-labeled mAb revealed Aire expression in a rare thymic cellular subset that was CD45(-), expressed low levels of Ly51, and was high for MHC-II and EpCam. This subset also expressed a specific pattern of costimulatory molecules, including CD40, CD80, and PD-L1. Immunohistochemical analysis revealed that Aire(+) cells were specifically localized to the thymus or, more precisely, to the cortico-medulla junction and medulla, correlating with the site of negative selection. Although in agreement with previous studies, low levels of Aire mRNA was detected in all dendritic cell subtypes however lacZ staining, immunohistochemistry and flow cytometry failed to detect Aire protein. At a cellular level, Aire was expressed in perinuclear speckles within the nucleus. This report provides the first detailed analysis of Aire protein expression, highlighting the precise location at both the tissue and cellular level.
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Affiliation(s)
- François-Xavier Hubert
- Division of Molecular and Medicine, Walter and Eliza Hall Institute of Medical Research, University of Melbourne, Parkville, Victoria, Australia.
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10
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Hill M, Tanguy-Royer S, Royer P, Chauveau C, Asghar K, Tesson L, Lavainne F, Rémy S, Brion R, Hubert FX, Heslan M, Rimbert M, Berthelot L, Moffett JR, Josien R, Grégoire M, Anegon I. IDO expands human CD4+CD25high regulatory T cells by promoting maturation of LPS-treated dendritic cells. Eur J Immunol 2007; 37:3054-62. [PMID: 17948274 DOI: 10.1002/eji.200636704] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We have previously shown that human monocyte-derived dendritic cells (DC) express indoleamine 2,3-dioxygenase (IDO), as well as several other enzymes of the kynurenine pathway at the mRNA level upon maturation. The tolerogenic mechanisms of this pathway remain unclear. Here we show that LPS-treated DC metabolize tryptophan as far as quinolinate. We found that IDO contributes to LPS and TNF-alpha + poly(I:C)-induced DC maturation since IDO inhibition using two different inhibitors impairs DC maturation. IDO knock-down using short-hairpin RNA also led to diminished LPS-induced maturation. In line with these results, the tryptophan-derived catabolites 3-hydroxyanthranilic acid and 3-hydroxykynurenine increased maturation of LPS-treated DC. Concerning the molecular mechanisms of this effect, IDO acts as an intermediate pathway in LPS-induced production of reactive oxygen species and NF-kappaB activation, two processes that lead to DC maturation. Finally, we show that mature DC expand CD4(+)CD25(high) regulatory T cells in an IDO-dependent manner. In conclusion, we show that IDO constitutes an intermediate pathway in DC maturation leading to expansion of CD4(+)CD25(high) regulatory T cells.
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Guillonneau C, Hill M, Hubert FX, Chiffoleau E, Hervé C, Li XL, Heslan M, Usal C, Tesson L, Ménoret S, Saoudi A, Le Mauff B, Josien R, Cuturi MC, Anegon I. CD40Ig treatment results in allograft acceptance mediated by CD8CD45RC T cells, IFN-gamma, and indoleamine 2,3-dioxygenase. J Clin Invest 2007; 117:1096-106. [PMID: 17404623 PMCID: PMC1839240 DOI: 10.1172/jci28801] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2006] [Accepted: 01/16/2007] [Indexed: 12/12/2022] Open
Abstract
Treatment with CD40Ig results in indefinite allograft survival in a complete MHC-mismatched heart allograft model in the rat. Here we show that serial second, third, and fourth adoptive transfers of total splenocytes from CD40Ig-treated recipients into secondary recipients led to indefinite donor-specific allograft acceptance. Purification of splenocyte subpopulations from CD40Ig-treated recipients demonstrated that only the adoptively transferred CD8(+)CD45RC(low) subset resulted in donor-specific long-term survival, whereas CD8(+)CD45RC(low) T cells from naive animals did not. Accepted grafts displayed increased indoleamine 2,3-dioxygenase (IDO) expression restricted in the graft to ECs. Coculture of donor ECs with CD8(+)CD45RC(low) T cells purified from CD40Ig-treated animals resulted in donor-specific IDO expression dependent on IFN-gamma. Neutralization of IFN-gamma or IDO triggered acute allograft rejection in both CD40Ig-treated and adoptively transferred recipients. This study demonstrates for what we believe to be the first time that interference in CD40-CD40 ligand (CD40-CD40L) interactions induces allospecific CD8(+) Tregs that maintain allograft survival. CD8(+)CD45RC(low) T cells act through IFN-gamma production, which in turn induces IDO expression by graft ECs. Thus, donor alloantigen-specific CD8(+) Tregs may promote local graft immune privilege through IDO expression.
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Affiliation(s)
- Carole Guillonneau
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Marcelo Hill
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - François-Xavier Hubert
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Elise Chiffoleau
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Caroline Hervé
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Xian-Liang Li
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Michèle Heslan
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Claire Usal
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Laurent Tesson
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Séverine Ménoret
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Abdelhadi Saoudi
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Brigitte Le Mauff
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Régis Josien
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Maria Cristina Cuturi
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
| | - Ignacio Anegon
- INSERM U643, Centre Hopitalier Universitaire de Nantes, Institut de Transplantation et de Recherche en Transplantation (ITERT), and Université de Nantes, Faculté de Médecine, Nantes, France.
INSERM U563, Département Immunologie, Toulouse, France
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Hubert FX, Voisine C, Louvet C, Heslan JM, Ouabed A, Heslan M, Josien R. Differential Pattern Recognition Receptor Expression but Stereotyped Responsiveness in Rat Spleen Dendritic Cell Subsets. J Immunol 2006; 177:1007-16. [PMID: 16818757 DOI: 10.4049/jimmunol.177.2.1007] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Dendritic cells (DC) are a heterogeneous population of APC endowed with specific functions. The nature of the DC subset involved in the course of an immune response to a specific pathogen might be important for inducing the appropriate effectors. In addition, each DC subset might also exhibit intrinsic functional plasticity. In the rat, spleen DC can be separated into three morphological and phenotypical distinct subsets, namely CD4+, CD4-, and plasmacytoid DC (pDC), whose frequencies are strain dependent. We correlated the expression of TLR and nucleotide-binding oligomerization domain 2 (NOD2) in these DC subsets to their in vitro responsiveness to specific ligands. CD4- DC expressed high levels of TLR1, 2, 3, and 10 mRNA, low TLR4, 5, 6, 7, and 9, and very low, if any, TLR8. pDC had a restricted repertoire characterized by high TLR7 and 9. CD4+ DC expressed all TLR and 10-fold higher levels of NOD2 mRNA than CD4- and pDC. Upon stimulation by TLR and NOD2 ligands, each DC subset responded in quite a stereotyped fashion. TLR2/6, 3, 4, 5, 9, and NOD2 triggering induced CD4- DC to mature and produce high IL-12p40, low IL-10, and TNF-alpha. TLR7/8 and 9 triggering induced pDC to mature and produce copious amounts of IL-6, IL-12p40, and TNF-alpha and low IFN-alpha. CD4+ DC were very poor producers of inflammatory cytokines. This study suggests that the nature of spleen DC responses to pathogens is dependent on subset specific-stimulation rather than intrinsic plasticity.
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Affiliation(s)
- François-Xavier Hubert
- INSERM Unité 643, Institut de Transplantation et de Recherche en Transplantation (ITERT), Centre Hospitalo-Universitaire Nantes, Hotel Dieu, 30 boulevard Jean Monnet, 44093 Nantes Cedex 1, France
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Chauveau C, Rémy S, Royer PJ, Hill M, Tanguy-Royer S, Hubert FX, Tesson L, Brion R, Beriou G, Gregoire M, Josien R, Cuturi MC, Anegon I. Heme oxygenase-1 expression inhibits dendritic cell maturation and proinflammatory function but conserves IL-10 expression. Blood 2005; 106:1694-702. [PMID: 15920011 DOI: 10.1182/blood-2005-02-0494] [Citation(s) in RCA: 269] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Heme oxygenase-1 (HO-1) is an intracellular enzyme that degrades heme and inhibits immune responses and inflammation in vivo. In most cell types, HO-1 is inducible by inflammatory stimuli and oxidative stress. Here we demonstrate that human monocyte-derived immature dendritic cells (iDCs) and several but not all freshly isolated rat splenic DC subsets and rat bone marrow-derived iDCs, spontaneously express HO-1. HO-1 expression drastically decreases during human and rat DC maturation induced in vitro. In human tissues, iDCs also express HO-1, whereas mature DCs do not. Induction of HO-1 expression with cobalt protoporphyrin (CoPP) in human and rat DCs inhibits lipopolysaccharide (LPS)-induced phenotypic maturation and secretion of proinflammatory cytokines, resulting in the inhibition of alloreactive T-cell proliferation. CoPP-treated DCs, however, retain the ability to produce the anti-inflammatory cytokine interleukin 10 (IL-10). Reactive oxygen species induced by LPS in DCs were inhibited by induction of HO-1. In conclusion, we identify, for the first time, the capacity of HO-1 to block maturation of DCs and to inhibit proinflammatory and allogeneic immune responses while preserving IL-10 production. This novel immune function for HO-1 may be of interest for the inhibition of immune responses in autoimmune diseases, transplantation, and other conditions involving activation of the immune system.
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Affiliation(s)
- Christine Chauveau
- INSERM U643, CHRU Nantes, 30 boulevard Jean Monnet, 44093 Nantes, France
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