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Abe K, Kitago M, Kosaki K, Yamada M, Iwasaki E, Kawasaki S, Mizukami K, Momozawa Y, Terao C, Yagi H, Abe Y, Hasegawa Y, Hori S, Tanaka M, Nakano Y, Kitagawa Y. Genomic analysis of familial pancreatic cancers and intraductal papillary mucinous neoplasms: A cross-sectional study. Cancer Sci 2022; 113:1821-1829. [PMID: 35238112 PMCID: PMC9128188 DOI: 10.1111/cas.15316] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/08/2022] [Accepted: 02/15/2022] [Indexed: 11/28/2022] Open
Abstract
Environmental and genetic factors play a critical role in the pathogenesis of pancreatic cancer, which is likely to follow a multistep process that includes intraductal papillary mucinous neoplasm. The pathogenesis of familial pancreatic cancer has been reported; however, epidemiological characteristics and causative genes remain unclear. This study aimed to determine the relationship between the family history of pancreatic cancer and tumor malignancy and identify novel susceptible germline variants of pancreatic cancer. We performed an epidemiologic study at our institute on a cohort of 668 patients with intraductal papillary mucinous neoplasm and 242 with pancreatic cancer but without associated intraductal papillary mucinous neoplasm stratified by family history of pancreatic cancer. Whole-exome sequencing was conducted for 10 patients from seven families with familial pancreatic cancer and intraductal papillary mucinous neoplasm. We found that patients who had intraductal papillary mucinous neoplasm with positive family history of pancreatic cancer within first-degree relatives were more likely to develop malignancy in a shorter period than those without family history. Duplicate frameshift variants in TET2 c.3180dupG (p.Pro1061fs) and ASXL1 c.1934dupG (p.Gly646fs) in one family and POLN c.1194dupT (p.Glu399fs) in another were identified as pathogenic truncating germline variants which were previously recognised susceptibility genes. Moreover, PDIA2 c.1403C>T (p.Pro468Leu) and DPYSL4 c.926C>A (p.Pro309Gln) were shared in four and two patients, respectively. In particular, PDIA2 was identified as a novel candidate for one of the deleterious variants of familial pancreatic cancer.
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Affiliation(s)
- Kodai Abe
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Minoru Kitago
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Kenjiro Kosaki
- Center for Medical GeneticsKeio University School of MedicineTokyoJapan
| | - Mamiko Yamada
- Center for Medical GeneticsKeio University School of MedicineTokyoJapan
| | - Eisuke Iwasaki
- Department of Internal MedicineKeio University School of MedicineTokyoJapan
| | - Shintaro Kawasaki
- Department of Internal MedicineKeio University School of MedicineTokyoJapan
| | - Keijiro Mizukami
- Laboratory for Genotyping DevelopmentRIKEN Center for Integrative Medical SciencesYokohamaJapan
| | - Yukihide Momozawa
- Laboratory for Genotyping DevelopmentRIKEN Center for Integrative Medical SciencesYokohamaJapan
| | - Chikashi Terao
- Laboratory for Statistical and Translational GeneticsRIKEN Center for Integrative Medical SciencesYokohamaJapan
| | - Hiroshi Yagi
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Yuta Abe
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Yasushi Hasegawa
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Shutaro Hori
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Masayuki Tanaka
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Yutaka Nakano
- Department of SurgeryKeio University School of MedicineTokyoJapan
| | - Yuko Kitagawa
- Department of SurgeryKeio University School of MedicineTokyoJapan
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2
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Merry TL, Petrov MS. The rise of genetically engineered mouse models of pancreatitis: A review of literature. Biomol Concepts 2018; 9:103-114. [DOI: 10.1515/bmc-2018-0011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/19/2018] [Indexed: 12/15/2022] Open
Abstract
AbstractPancreatitis is increasingly recognized as not merely a local inflammation of the pancreas but also a disease with high frequency of systemic sequelae. Current understanding of the cellular mechanisms that trigger it and affect the development of sequelae are limited. Genetically engineered mouse models can be a useful tool to study the pathophysiology of pancreatitis. This article gives an overview of the genetically engineered mouse models that spontaneously develop pancreatitis and discusses those that most closely replicate different pancreatitis hallmarks observed in humans.
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Affiliation(s)
- Troy L. Merry
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Maxim S. Petrov
- Department of Surgery, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
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3
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Nalawade SA, Ji N, Raphael I, Pratt A, Kraig E, Forsthuber TG. Aire is not essential for regulating neuroinflammatory disease in mice transgenic for human autoimmune-diseases associated MHC class II genes HLA-DR2b and HLA-DR4. Cell Immunol 2018; 331:38-48. [PMID: 29789121 PMCID: PMC6092225 DOI: 10.1016/j.cellimm.2018.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 05/06/2018] [Indexed: 12/30/2022]
Abstract
The human autoimmune disease-associated HLA alleles HLA-DR2b (DRB1*1501) and HLA-DR4 (DRB1*0401) are strongly linked to increased susceptibility for multiple sclerosis (MS) and rheumatoid arthritis (RA), respectively. The underlying mechanisms are not fully understood, but these MHC alleles may shape the repertoire of pathogenic T cells via central tolerance. The transcription factor autoimmune regulator (AIRE) promotes central T cell tolerance via ectopic expression of tissue-specific antigens (TSAs). Aire deficiency in humans causes autoimmune polyendocrinopathy syndrome type 1 (APS1), and Aire knockout mice (Aire-/-) develop spontaneous autoimmune pathology characterized by multi-organ lymphocytic infiltrates. Here, we asked whether impaired TSAs gene expression in the absence of Aire promoted spontaneous MS- or RA-like autoimmune pathology in the context of human HLA alleles in HLA-DR2b or HLA-DR4 transgenic (tg) mice. The results show that reduced TSAs gene expression in the thymus of Aire-deficient HLA-DR2b or HLA-DR4 tg mice corresponded to mild spontaneous inflammatory infiltrates in salivary glands, liver, and pancreas. Moreover, Aire-deficiency modestly enhanced experimental autoimmune encephalomyelitis (EAE) in HLA-DR tg mice, but the animals did not show signs of spontaneous neuroinflammation or arthritis. No significant changes were observed in CD4+ T cell numbers, T cell receptor (TCR) distribution, regulatory T cells (Treg), or antigen-induced cytokine production. Abrogating Treg function by treatment with anti-CTLA-4 or anti-CD25 mAb in Aire-deficient HLA-DR tg mice did not trigger EAE or other autoimmune pathology. Our results suggest a redundant role for Aire in maintaining immune tolerance in the context of autoimmune disease-associated human HLA alleles.
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MESH Headings
- Animals
- Antigens/immunology
- Antigens/metabolism
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/metabolism
- Autoimmune Diseases/genetics
- Autoimmune Diseases/immunology
- Autoimmune Diseases/metabolism
- Encephalomyelitis, Autoimmune, Experimental/genetics
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- HLA-DR2 Antigen/genetics
- HLA-DR2 Antigen/immunology
- HLA-DR2 Antigen/metabolism
- HLA-DR4 Antigen/genetics
- HLA-DR4 Antigen/immunology
- HLA-DR4 Antigen/metabolism
- Humans
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Multiple Sclerosis/genetics
- Multiple Sclerosis/immunology
- Multiple Sclerosis/metabolism
- Organ Specificity/immunology
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Transcription Factors/genetics
- Transcription Factors/immunology
- Transcription Factors/metabolism
- AIRE Protein
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Affiliation(s)
- Saisha A Nalawade
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States
| | - Niannian Ji
- Department of Urology, School of Medicine, University of Texas Health, San Antonio, TX 78229, United States
| | - Itay Raphael
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, United States
| | - Andrew Pratt
- U.S. Naval Medical Research Unit, San Antonio, TX 78234, United States
| | - Ellen Kraig
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, TX 78229, United States
| | - Thomas G Forsthuber
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States.
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4
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Yamada K, Zuka M, Ito K, Mizuguchi K, Kakuchi Y, Onoe T, Suzuki Y, Yamagishi M, Izui S, Malissen M, Malissen B, Kawano M. LatY136F knock-in mouse model for human IgG4-related disease. PLoS One 2018; 13:e0198417. [PMID: 29902238 PMCID: PMC6002065 DOI: 10.1371/journal.pone.0198417] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/19/2018] [Indexed: 12/24/2022] Open
Abstract
Background The adaptor protein Linker for activation of T cell (LAT) is a key signaling hub used by the T cell antigen receptor. Mutant mice expressing loss-of-function mutations affecting LAT and including a mutation in which tyrosine 136 is replaced by a phenylalanine (LatY136F) develop lymphoproliferative disorder involving T helper type 2 effector cells capable of triggering a massive polyclonal B cell activation that leads to hypergammaglobulinemia G1 and E and to non-resolving inflammation and autoimmunity. The purpose of this study was to evaluate whether the phenotypes of LatY136F knock-in mice resemble the immunohistopathological features of immunoglobulin G4-related disease (IgG4-RD). Methods LatY136F knock-in mice were sacrificed at 4–20 weeks of age, and pancreas, kidney, salivary gland and lung were obtained. All organs were stained with hematoxylin-eosin and with Azan for estimation of collagen in fibrosis, and the severity scores of inflammation and fibrosis were evaluated. Immunostainings were performed to analyze the types of infiltrating cells. In addition, the effects of corticosteroid treatment on the development of tissue lesions and serum levels of IgG1 were assessed. Results Tissue lesions characterized by inflammatory mononuclear cell infiltration and fibrosis were detected in pancreas, kidney, and salivary gland starting from 6 weeks of age. Immunostainings showed pronounced infiltration of plasma cells, CD4-positive T cells, and macrophages. Infiltrating plasma cells predominantly expressed IgG1. The extent of inflammation in pancreas and salivary glands was markedly reduced by corticosteroid treatment. Conclusions LatY136F knock-in mice displayed increased production of Th2-type IgG1 (a homologue of human IgG4) and developed multiple organ tissue lesions reminiscent of those seen in patients with IgG4-RD. Moreover, the development of these tissue lesions was highly sensitive to corticosteroid treatment like in IgG4-RD. For these reasons we consider the LatY136F knock-in mouse strain to represent a promising model for human IgG4-RD.
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Affiliation(s)
- Kazunori Yamada
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- Department of Advanced Research in Community Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masahiko Zuka
- Department of Forensic Medicine and Pathology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kiyoaki Ito
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Keishi Mizuguchi
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Yasushi Kakuchi
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tamehito Onoe
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yasunori Suzuki
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masakazu Yamagishi
- Division of Cardiology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shozo Izui
- Department of Pathology and Immunology, University Medical Center, University of Geneva, Switzerland
| | - Marie Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Bernard Malissen
- Centre d’Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Mitsuhiro Kawano
- Division of Rheumatology, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
- * E-mail:
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5
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Abstract
About two decades ago, cloning of the autoimmune regulator (AIRE) gene materialized one of the most important actors on the scene of self-tolerance. Thymic transcription of genes encoding tissue-specific antigens (ts-ags) is activated by AIRE protein and embodies the essence of thymic self-representation. Pathogenic AIRE variants cause the autoimmune polyglandular syndrome type 1, which is a rare and complex disease that is gaining attention in research on autoimmunity. The animal models of disease, although not identically reproducing the human picture, supply fundamental information on mechanisms and extent of AIRE action: thanks to its multidomain structure, AIRE localizes to chromatin enclosing the target genes, binds to histones, and offers an anchorage to multimolecular complexes involved in initiation and post-initiation events of gene transcription. In addition, AIRE enhances mRNA diversity by favoring alternative mRNA splicing. Once synthesized, ts-ags are presented to, and cause deletion of the self-reactive thymocyte clones. However, AIRE function is not restricted to the activation of gene transcription. AIRE would control presentation and transfer of self-antigens for thymic cellular interplay: such mechanism is aimed at increasing the likelihood of engagement of the thymocytes that carry the corresponding T-cell receptors. Another fundamental role of AIRE in promoting self-tolerance is related to the development of thymocyte anergy, as thymic self-representation shapes at the same time the repertoire of regulatory T cells. Finally, AIRE seems to replicate its action in the secondary lymphoid organs, albeit the cell lineage detaining such property has not been fully characterized. Delineation of AIRE functions adds interesting data to the knowledge of the mechanisms of self-tolerance and introduces exciting perspectives of therapeutic interventions against the related diseases.
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Affiliation(s)
- Roberto Perniola
- Department of Pediatrics, Neonatal Intensive Care, Vito Fazzi Regional Hospital, Lecce, Italy
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6
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Ludwig RJ, Vanhoorelbeke K, Leypoldt F, Kaya Z, Bieber K, McLachlan SM, Komorowski L, Luo J, Cabral-Marques O, Hammers CM, Lindstrom JM, Lamprecht P, Fischer A, Riemekasten G, Tersteeg C, Sondermann P, Rapoport B, Wandinger KP, Probst C, El Beidaq A, Schmidt E, Verkman A, Manz RA, Nimmerjahn F. Mechanisms of Autoantibody-Induced Pathology. Front Immunol 2017; 8:603. [PMID: 28620373 PMCID: PMC5449453 DOI: 10.3389/fimmu.2017.00603] [Citation(s) in RCA: 307] [Impact Index Per Article: 43.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/08/2017] [Indexed: 12/22/2022] Open
Abstract
Autoantibodies are frequently observed in healthy individuals. In a minority of these individuals, they lead to manifestation of autoimmune diseases, such as rheumatoid arthritis or Graves' disease. Overall, more than 2.5% of the population is affected by autoantibody-driven autoimmune disease. Pathways leading to autoantibody-induced pathology greatly differ among different diseases, and autoantibodies directed against the same antigen, depending on the targeted epitope, can have diverse effects. To foster knowledge in autoantibody-induced pathology and to encourage development of urgently needed novel therapeutic strategies, we here categorized autoantibodies according to their effects. According to our algorithm, autoantibodies can be classified into the following categories: (1) mimic receptor stimulation, (2) blocking of neural transmission, (3) induction of altered signaling, triggering uncontrolled (4) microthrombosis, (5) cell lysis, (6) neutrophil activation, and (7) induction of inflammation. These mechanisms in relation to disease, as well as principles of autoantibody generation and detection, are reviewed herein.
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Affiliation(s)
- Ralf J. Ludwig
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Frank Leypoldt
- Neuroimmunology, Institute of Clinical Chemistry, University Hospital Schleswig-Holstein, Kiel, Germany
- Neuroimmunology, Institute of Clinical Chemistry, University Hospital Schleswig-Holstein, Lübeck, Germany
- Department of Neurology, University of Kiel, Kiel, Germany
| | - Ziya Kaya
- Department of Internal Medicine III, University of Heidelberg, Heidelberg, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Sandra M. McLachlan
- Thyroid Autoimmune Disease Unit, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, CA, United States
| | - Lars Komorowski
- Institute for Experimental Immunology, Affiliated to Euroimmun AG, Lübeck, Germany
| | - Jie Luo
- Department of Neuroscience, University of Pennsylvania Medical School, Philadelphia, PA, United States
| | | | | | - Jon M. Lindstrom
- Department of Neuroscience, University of Pennsylvania Medical School, Philadelphia, PA, United States
| | - Peter Lamprecht
- Department of Rheumatology, University of Lübeck, Lübeck, Germany
| | - Andrea Fischer
- Department of Internal Medicine III, University of Heidelberg, Heidelberg, Germany
| | | | - Claudia Tersteeg
- Laboratory for Thrombosis Research, IRF Life Sciences, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | | | - Basil Rapoport
- Thyroid Autoimmune Disease Unit, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, CA, United States
| | - Klaus-Peter Wandinger
- Department of Neurology, Institute of Clinical Chemistry, University Medical-Centre Schleswig-Holstein, Lübeck, Germany
| | - Christian Probst
- Institute for Experimental Immunology, Affiliated to Euroimmun AG, Lübeck, Germany
| | - Asmaa El Beidaq
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Enno Schmidt
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Alan Verkman
- Department of Medicine, University of California, San Francisco, CA, United States
- Department of Physiology, University of California, San Francisco, CA, United States
| | - Rudolf A. Manz
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Falk Nimmerjahn
- Department of Biology, Institute of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany
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7
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Truffault F, de Montpreville V, Eymard B, Sharshar T, Le Panse R, Berrih-Aknin S. Thymic Germinal Centers and Corticosteroids in Myasthenia Gravis: an Immunopathological Study in 1035 Cases and a Critical Review. Clin Rev Allergy Immunol 2017; 52:108-124. [PMID: 27273086 DOI: 10.1007/s12016-016-8558-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The most common form of Myasthenia gravis (MG) is due to anti-acetylcholine receptor (AChR) antibodies and is frequently associated with thymic pathology. In this review, we discuss the immunopathological characteristics and molecular mechanisms of thymic follicular hyperplasia, the effects of corticosteroids on this thymic pathology, and the role of thymic epithelial cells (TEC), a key player in the inflammatory thymic mechanisms. This review is based not only on the literature data but also on thymic transcriptome results and analyses of pathological and immunological correlations in a vast cohort of 1035 MG patients without thymoma. We show that among patients presenting a thymic hyperplasia with germinal centers (GC), 80 % are females, indicating that thymic follicular hyperplasia is mainly a disease of women. The presence of anti-AChR antibodies is correlated with the degree of follicular hyperplasia, suggesting that the thymus is a source of anti-AChR antibodies. The degree of hyperplasia is not dependent upon the time from the onset, implying that either the antigen is chronically expressed and/or that the mechanisms of the resolution of the GC are not efficiently controlled. Glucocorticoids, a conventional therapy in MG, induce a significant reduction in the GC number, together with changes in the expression of chemokines and angiogenesis. These changes are likely related to the acetylation molecular process, overrepresented in corticosteroid-treated patients, and essential for gene regulation. Altogether, based on the pathological and molecular thymic abnormalities found in MG patients, this review provides some explanations for the benefit of thymectomy in early-onset MG patients.
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Affiliation(s)
- Frédérique Truffault
- INSERM U974, Paris, France.,CNRS FRE3617, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,AIM, Institut de myologie, Paris, France
| | | | - Bruno Eymard
- Department of Neuromuscular Disorders, CHU Salpêtrière, Paris, France
| | - Tarek Sharshar
- General Intensive Care Medicine, Assistance Publique Hôpitaux de Paris, Raymond Poincaré Hospital, University of Versailles Saint-Quentin en Yvelines, 92380, Garches, France
| | - Rozen Le Panse
- INSERM U974, Paris, France.,CNRS FRE3617, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,AIM, Institut de myologie, Paris, France
| | - Sonia Berrih-Aknin
- INSERM U974, Paris, France. .,CNRS FRE3617, Paris, France. .,Sorbonne Universités, UPMC Univ Paris 06, Paris, France. .,AIM, Institut de myologie, Paris, France. .,UMRS 974 UPMC, INSERM, FRE 3617 CNRS, AIM, Center of Research in Myology, 105 Boulevard de l'Hôpital, Paris, 75013, France.
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8
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Dragin N, Bismuth J, Cizeron-Clairac G, Biferi MG, Berthault C, Serraf A, Nottin R, Klatzmann D, Cumano A, Barkats M, Le Panse R, Berrih-Aknin S. Estrogen-mediated downregulation of AIRE influences sexual dimorphism in autoimmune diseases. J Clin Invest 2016; 126:1525-37. [PMID: 26999605 PMCID: PMC4811157 DOI: 10.1172/jci81894] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 01/21/2016] [Indexed: 01/01/2023] Open
Abstract
Autoimmune diseases affect 5% to 8% of the population, and females are more susceptible to these diseases than males. Here, we analyzed human thymic transcriptome and revealed sex-associated differences in the expression of tissue-specific antigens that are controlled by the autoimmune regulator (AIRE), a key factor in central tolerance. We hypothesized that the level of AIRE is linked to sexual dimorphism susceptibility to autoimmune diseases. In human and mouse thymus, females expressed less AIRE (mRNA and protein) than males after puberty. These results were confirmed in purified murine thymic epithelial cells (TECs). We also demonstrated that AIRE expression is related to sexual hormones, as male castration decreased AIRE thymic expression and estrogen receptor α-deficient mice did not show a sex disparity for AIRE expression. Moreover, estrogen treatment resulted in downregulation of AIRE expression in cultured human TECs, human thymic tissue grafted to immunodeficient mice, and murine fetal thymus organ cultures. AIRE levels in human thymus grafted in immunodeficient mice depended upon the sex of the recipient. Estrogen also upregulated the number of methylated CpG sites in the AIRE promoter. Together, our results indicate that in females, estrogen induces epigenetic changes in the AIRE gene, leading to reduced AIRE expression under a threshold that increases female susceptibility to autoimmune diseases.
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Affiliation(s)
- Nadine Dragin
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
| | - Jacky Bismuth
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
| | | | - Maria Grazia Biferi
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
| | - Claire Berthault
- INSERM U668, Unit for Lymphopoiesis, Immunology Department, Pasteur Institute, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Cellule Pasteur, Paris, France
| | - Alain Serraf
- Hôpital Marie Lannelongue, Le Plessis–Robinson, France
| | - Rémi Nottin
- Hôpital Marie Lannelongue, Le Plessis–Robinson, France
| | - David Klatzmann
- Assistance Publique – Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Biotherapy, Paris, France
| | - Ana Cumano
- INSERM U668, Unit for Lymphopoiesis, Immunology Department, Pasteur Institute, Paris, France
| | - Martine Barkats
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
| | - Rozen Le Panse
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
| | - Sonia Berrih-Aknin
- Sorbonne Universités, UPMC University of Paris 06, Paris, France
- INSERM U974, Paris, France
- CNRS FRE 3617, Paris, France
- AIM, Institute of Myology, Paris, France
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9
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Sansom SN, Shikama-Dorn N, Zhanybekova S, Nusspaumer G, Macaulay IC, Deadman ME, Heger A, Ponting CP, Holländer GA. Population and single-cell genomics reveal the Aire dependency, relief from Polycomb silencing, and distribution of self-antigen expression in thymic epithelia. Genome Res 2014; 24:1918-31. [PMID: 25224068 PMCID: PMC4248310 DOI: 10.1101/gr.171645.113] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 09/12/2014] [Indexed: 12/18/2022]
Abstract
Promiscuous gene expression (PGE) by thymic epithelial cells (TEC) is essential for generating a diverse T cell antigen receptor repertoire tolerant to self-antigens, and thus for avoiding autoimmunity. Nevertheless, the extent and nature of this unusual expression program within TEC populations and single cells are unknown. Using deep transcriptome sequencing of carefully identified mouse TEC subpopulations, we discovered a program of PGE that is common between medullary (m) and cortical TEC, further elaborated in mTEC, and completed in mature mTEC expressing the autoimmune regulator gene (Aire). TEC populations are capable of expressing up to 19,293 protein-coding genes, the highest number of genes known to be expressed in any cell type. Remarkably, in mouse mTEC, Aire expression alone positively regulates 3980 tissue-restricted genes. Notably, the tissue specificities of these genes include known targets of autoimmunity in human AIRE deficiency. Led by the observation that genes induced by Aire expression are generally characterized by a repressive chromatin state in somatic tissues, we found these genes to be strongly associated with H3K27me3 marks in mTEC. Our findings are consistent with AIRE targeting and inducing the promiscuous expression of genes previously epigenetically silenced by Polycomb group proteins. Comparison of the transcriptomes of 174 single mTEC indicates that genes induced by Aire expression are transcribed stochastically at low cell frequency. Furthermore, when present, Aire expression-dependent transcript levels were 16-fold higher, on average, in individual TEC than in the mTEC population.
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Affiliation(s)
- Stephen N Sansom
- MRC Computational Genomics Analysis and Training Programme, MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, United Kingdom;
| | - Noriko Shikama-Dorn
- Paediatric Immunology, Department of Biomedicine, University of Basel, and The Basel University Children's Hospital, Basel, 4058, Switzerland
| | - Saule Zhanybekova
- Paediatric Immunology, Department of Biomedicine, University of Basel, and The Basel University Children's Hospital, Basel, 4058, Switzerland
| | - Gretel Nusspaumer
- Paediatric Immunology, Department of Biomedicine, University of Basel, and The Basel University Children's Hospital, Basel, 4058, Switzerland
| | - Iain C Macaulay
- Wellcome Trust Sanger Institute-EBI Single Cell Genomics Centre, Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Mary E Deadman
- Developmental Immunology, Department of Paediatrics, and the Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom
| | - Andreas Heger
- MRC Computational Genomics Analysis and Training Programme, MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, United Kingdom
| | - Chris P Ponting
- MRC Computational Genomics Analysis and Training Programme, MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, United Kingdom; Wellcome Trust Sanger Institute-EBI Single Cell Genomics Centre, Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Georg A Holländer
- Paediatric Immunology, Department of Biomedicine, University of Basel, and The Basel University Children's Hospital, Basel, 4058, Switzerland; Developmental Immunology, Department of Paediatrics, and the Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom
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