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Holmes CM, Babasyan S, Wagner B. Neonatal and maternal upregulation of antileukoproteinase in horses. Front Immunol 2024; 15:1395030. [PMID: 38736885 PMCID: PMC11082313 DOI: 10.3389/fimmu.2024.1395030] [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: 03/02/2024] [Accepted: 04/15/2024] [Indexed: 05/14/2024] Open
Abstract
Introduction The end of gestation, ensuing parturition, and the neonatal period represent highly dynamic phases for immunological changes in both mother and offspring. The regulation of innate immune cells at the maternal-fetal interface during late term pregnancy, after birth, and during microbial colonization of the neonatal gut and other mucosal surfaces, is crucial for controlling inflammation and maintaining homeostasis. Innate immune cells and mucosal epithelial cells express antileukoproteinase (SLPI), which has anti-inflammatory and anti-protease activity that can regulate cellular activation. Methods Here, we developed and validated new monoclonal antibodies (mAbs) to characterize SLPI for the first time in horses. Peripheral blood and mucosal samples were collected from healthy adults horses and a cohort of mares and their foals directly following parturition to assess this crucial stage. Results First, we defined the cell types producing SLPI in peripheral blood by flow cytometry, highlighting the neutrophils and a subset of the CD14+ monocytes as SLPI secreting immune cells. A fluorescent bead-based assay was developed with the new SLPI mAbs and used to establish baseline concentrations for secreted SLPI in serum and secretion samples from mucosal surfaces, including saliva, nasal secretion, colostrum, and milk. This demonstrated constitutive secretion of SLPI in a variety of equine tissues, including high colostrum concentrations. Using immunofluorescence, we identified production of SLPI in mucosal tissue. Finally, longitudinal sampling of clinically healthy mares and foals allowed monitoring of serum SLPI concentrations. In neonates and postpartum mares, SLPI peaked on the day of parturition, with mares returning to the adult normal within a week and foals maintaining significantly higher SLPI secretion until three months of age. Conclusion This demonstrated a physiological systemic change in SLPI in both mares and their foals, particularly at the time around birth, likely contributing to the regulation of innate immune responses during this critical period.
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Affiliation(s)
| | | | - Bettina Wagner
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
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2
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Mahapatra S, Ganguly B, Pani S, Saha A, Samanta M. A comprehensive review on the dynamic role of toll-like receptors (TLRs) in frontier aquaculture research and as a promising avenue for fish disease management. Int J Biol Macromol 2023; 253:126541. [PMID: 37648127 DOI: 10.1016/j.ijbiomac.2023.126541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023]
Abstract
Toll-like receptors (TLRs) represent a conserved group of germline-encoded pattern recognition receptors (PRRs) that recognize pathogen-associated molecular patterns (PAMPs) and play a crucial role in inducing the broadly acting innate immune response against pathogens. In recent years, the detection of 21 different TLR types in various fish species has sparked interest in exploring the potential of TLRs as targets for boosting immunity and disease resistance in fish. This comprehensive review offers the latest insights into the diverse facets of fish TLRs, highlighting their history, classification, architectural insights through 3D modelling, ligands recognition, signalling pathways, crosstalk, and expression patterns at various developmental stages. It provides an exhaustive account of the distinct TLRs induced during the invasion of specific pathogens in various fish species and delves into the disparities between fish TLRs and their mammalian counterparts, highlighting the specific contribution of TLRs to the immune response in fish. Although various facets of TLRs in some fish, shellfish, and molluscs have been described, the role of TLRs in several other aquatic organisms still remained as potential gaps. Overall, this article outlines frontier aquaculture research in advancing the knowledge of fish immune systems for the proper management of piscine maladies.
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Affiliation(s)
- Smruti Mahapatra
- Immunology Laboratory, Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Kausalyaganga, Bhubaneswar 751002, Odisha, India
| | - Bristy Ganguly
- Immunology Laboratory, Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Kausalyaganga, Bhubaneswar 751002, Odisha, India
| | - Saswati Pani
- Immunology Laboratory, Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Kausalyaganga, Bhubaneswar 751002, Odisha, India
| | - Ashis Saha
- Reproductive Biology and Endocrinology Laboratory, Fish Nutrition and Physiology Division, ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Kausalyaganga, Bhubaneswar 751002, Odisha, India
| | - Mrinal Samanta
- Immunology Laboratory, Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Kausalyaganga, Bhubaneswar 751002, Odisha, India.
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3
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Odler B, Tieu J, Artinger K, Chen-Xu M, Arnaud L, Kitching RA, Terrier B, Thiel J, Cid MC, Rosenkranz AR, Kronbichler A, Jayne DRW. The plethora of immunomodulatory drugs: opportunities for immune-mediated kidney diseases. Nephrol Dial Transplant 2023; 38:ii19-ii28. [PMID: 37816674 DOI: 10.1093/ndt/gfad186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Indexed: 10/12/2023] Open
Abstract
In recent decades, insights into the molecular pathways involved in disease have revolutionized the treatment of autoimmune diseases. A plethora of targeted therapies have been identified and are at varying stages of clinical development in renal autoimmunity. Some of these agents, such as rituximab or avacopan, have been approved for the treatment of immune-mediated kidney disease, but kidney disease lags behind more common autoimmune disorders in new drug development. Evidence is accumulating as to the importance of adaptive immunity, including abnormalities in T-cell activation and signaling, and aberrant B-cell function. Furthermore, innate immunity, particularly the complement and myeloid systems, as well as pathologic responses in tissue repair and fibrosis, play a key role in disease. Collectively, these mechanistic studies in innate and adaptive immunity have provided new insights into mechanisms of glomerular injury in immune-mediated kidney diseases. In addition, inflammatory pathways common to several autoimmune conditions exist, suggesting that the repurposing of some existing drugs for the treatment of immune-mediated kidney diseases is a logical strategy. This new understanding challenges the clinical investigator to translate new knowledge into novel therapies leading to better disease outcomes. This review highlights promising immunomodulatory therapies tested for immune-mediated kidney diseases as a primary indication, details current clinical trials and discusses pathways that could be targeted in the future.
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Affiliation(s)
- Balazs Odler
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Johanna Tieu
- Faculty of Health and Medical Sciences, University of Adelaide; Adelaide, Australia
- Rheumatology Unit, The Queen Elizabeth Hospital, Adelaide, Australia
- Rheumatology Unit, Lyell McEwin Hospital, Adelaide, Australia
| | - Katharina Artinger
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Michael Chen-Xu
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Laurent Arnaud
- National Reference Center for Rare Auto-immune and Systemic Diseases Est Sud-Est (RESO), Strasbourg, France
| | - Richard A Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, Victoria, Australia
- Departments of Nephrology and Paediatric Nephrology, Monash Medical Centre, Clayton, Victoria, Australia
| | - Benjamin Terrier
- Department of Internal Medicine, National Reference Center for Autoimmune Diseases, Hôpital Cochin, Assistance Publique Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Jens Thiel
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Maria C Cid
- Department of Autoimmune Diseases, Hospital Clinic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - Alexander R Rosenkranz
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Andreas Kronbichler
- Department of Medicine, University of Cambridge, Cambridge, UK
- Department of Internal Medicine IV, Nephrology and Hypertension, Medical University Innsbruck, Innsbruck, Austria
| | - David R W Jayne
- Department of Medicine, University of Cambridge, Cambridge, UK
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4
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Ha JG, Cho HJ. Unraveling the Role of Epithelial Cells in the Development of Chronic Rhinosinusitis. Int J Mol Sci 2023; 24:14229. [PMID: 37762530 PMCID: PMC10531804 DOI: 10.3390/ijms241814229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
The pathophysiology of CRS is multifactorial and complex yet needs to be completed. Recent evidence emphasizes the crucial part played by epithelial cells in the development of CRS. The epithelial cells act as physical barriers and play crucial roles in host defense, including initiating and shaping innate and adaptive immune responses. This review aims to present a comprehensive understanding of the significance of nasal epithelial cells in CRS. New research suggests that epithelial dysfunction plays a role in developing CRS through multiple mechanisms. This refers to issues with a weakened barrier function, disrupted mucociliary clearance, and irregular immune responses. When the epithelial barrier is compromised, it can lead to the passage of pathogens and allergens, triggering inflammation in the body. Furthermore, impaired mucociliary clearance can accumulate pathogens and secretions of inflammatory mediators, promoting chronic inflammation. Epithelial cells can release cytokines and chemokines, which attract and activate immune cells. This can result in an imbalanced immune response that continues to cause inflammation. The interaction between nasal epithelial cells and various immune cells leads to the production of cytokines and chemokines, which can either increase or decrease inflammation. By comprehending the role of epithelial cells in CRS, we can enhance our understanding of the disease's pathogenesis and explore new therapeutics.
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Affiliation(s)
- Jong-Gyun Ha
- Department of Otorhinolaryngology—Head and Neck Surgery, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong 14353, Republic of Korea;
| | - Hyung-Ju Cho
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- The Airway Mucus Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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5
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Di Sabatino A, Santacroce G, Rossi CM, Broglio G, Lenti MV. Role of mucosal immunity and epithelial-vascular barrier in modulating gut homeostasis. Intern Emerg Med 2023; 18:1635-1646. [PMID: 37402104 PMCID: PMC10504119 DOI: 10.1007/s11739-023-03329-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 05/25/2023] [Indexed: 07/05/2023]
Abstract
The intestinal mucosa represents the most extensive human barrier having a defense function against microbial and food antigens. This barrier is represented externally by a mucus layer, consisting mainly of mucins, antimicrobial peptides, and secretory immunoglobulin A (sIgA), which serves as the first interaction with the intestinal microbiota. Below is placed the epithelial monolayer, comprising enterocytes and specialized cells, such as goblet cells, Paneth cells, enterochromaffin cells, and others, each with a specific protective, endocrine, or immune function. This layer interacts with both the luminal environment and the underlying lamina propria, where mucosal immunity processes primarily take place. Specifically, the interaction between the microbiota and an intact mucosal barrier results in the activation of tolerogenic processes, mainly mediated by FOXP3+ regulatory T cells, underlying intestinal homeostasis. Conversely, the impairment of the mucosal barrier function, the alteration of the normal luminal microbiota composition (dysbiosis), or the imbalance between pro- and anti-inflammatory mucosal factors may result in inflammation and disease. Another crucial component of the intestinal barrier is the gut-vascular barrier, formed by endothelial cells, pericytes, and glial cells, which regulates the passage of molecules into the bloodstream. The aim of this review is to examine the various components of the intestinal barrier, assessing their interaction with the mucosal immune system, and focus on the immunological processes underlying homeostasis or inflammation.
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Affiliation(s)
- Antonio Di Sabatino
- Department of Internal Medicine and Medical Therapeutics, University of Pavia, Pavia, Italy.
- First Department of Internal Medicine, San Matteo Hospital Foundation, Pavia, Italy.
- Clinica Medica I, Fondazione IRCCS Policlinico San Matteo, Università di Pavia, Viale Golgi 19, 27100, Pavia, Italy.
| | - Giovanni Santacroce
- Department of Internal Medicine and Medical Therapeutics, University of Pavia, Pavia, Italy
- First Department of Internal Medicine, San Matteo Hospital Foundation, Pavia, Italy
| | - Carlo Maria Rossi
- Department of Internal Medicine and Medical Therapeutics, University of Pavia, Pavia, Italy
- First Department of Internal Medicine, San Matteo Hospital Foundation, Pavia, Italy
| | - Giacomo Broglio
- Department of Internal Medicine and Medical Therapeutics, University of Pavia, Pavia, Italy
- First Department of Internal Medicine, San Matteo Hospital Foundation, Pavia, Italy
| | - Marco Vincenzo Lenti
- Department of Internal Medicine and Medical Therapeutics, University of Pavia, Pavia, Italy
- First Department of Internal Medicine, San Matteo Hospital Foundation, Pavia, Italy
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6
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Zhang X, Liu SS, Ma J, Qu W. Secretory leukocyte protease inhibitor (SLPI) in cancer pathophysiology: Mechanisms of action and clinical implications. Pathol Res Pract 2023; 248:154633. [PMID: 37356220 DOI: 10.1016/j.prp.2023.154633] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/17/2023] [Accepted: 06/18/2023] [Indexed: 06/27/2023]
Abstract
Cancer is a multifaceted disorder frequently linked to the dysregulation of several biological processes. The SLPI is a multifunctional protein involved in the modulation of immunological response and the inhibition of protease activities. SLPI acts as an inhibitor of proteases, exerts antibacterial properties, and suppresses the transcription of proinflammatory genes through the nuclear factor-kappa B (NF-κB) pathway. The role of this protein as a regulatory agent has been implicated in various types of cancer. Recent research has revealed that SLPI upregulation in cancer cells enhances the metastatic capacity of epithelial malignancies, indicating the deleterious effects of this protein. Furthermore, SLPI interacts intricately with other cancer-promoting factors, including matrix metalloproteinase-2 (MMP-2), MMP-9, the NF-κB and Akt pathways, and the p53-upregulated modulator of apoptosis (PUMA). This review provides an overview of the role of SLPI in cancer pathophysiology, emphasizing its expression in cancer cells and tissues, its potential as a prognostic biomarker, and its therapeutic promise as a target in cancer treatment. The mechanisms of SLPI action in cancer, including its anti-inflammatory effects, regulation of cell proliferation and angiogenesis, and modulation of the tumor microenvironment, have been investigated. The clinical implications of SLPI in cancer have been discussed, including its potential as a diagnostic and prognostic biomarker, its role in chemoresistance, and its therapeutic potential in several types of cancer, such as hepatocellular carcinoma (HCC), colorectal cancer (CRC), pancreatic cancer, head and neck squamous cell carcinoma (HNSCC), ovarian cancer (OvCa), prostate cancer (PC), gastric cancer (GC), breast cancer, and other cancers. In addition, we emphasized the significance of SLPI in cancer, which offers fresh perspectives on potential targets for cancer therapy.
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Affiliation(s)
- Xiaohua Zhang
- Department of Clinical Laboratory, the Second Hospital of Jilin University, Changchun 130000, China
| | - Shan Shan Liu
- Department of General Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
| | - Jingru Ma
- Department of Clinical Laboratory, the Second Hospital of Jilin University, Changchun 130000, China
| | - Wei Qu
- Department of General Medicine, the Second Hospital of Jilin University, Changchun 130000, China
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7
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Sawicki KT, Nannini DR, Bielinski SJ, Larson NB, Lloyd-Jones DM, Psaty B, Taylor KD, Shah SJ, Rasmussen-Torvik LJ, Wilkins JT, McNally EM, Patel RB. Secretory leukocyte protease inhibitor and risk of heart failure in the Multi-Ethnic Study of Atherosclerosis. Sci Rep 2023; 13:604. [PMID: 36635319 PMCID: PMC9837113 DOI: 10.1038/s41598-023-27679-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/05/2023] [Indexed: 01/14/2023] Open
Abstract
Circulating protease inhibitors are important regulators of inflammation that are implicated in the pathophysiology of heart failure (HF). Secretory leukocyte protease inhibitor (SLPI) is a serine protease inhibitor which protects pulmonary tissues against inflammatory damage; however, its role in HF is not well understood. We sought to evaluate associations of circulating SLPI and genetically-mediated serum SLPI with incident HF and its subtypes in a multi-ethnic cohort of adults using clinical and genetic epidemiological approaches. Among 2,297 participants in the Multi-Ethnic Study of Atherosclerosis (MESA), each doubling of serum SLPI was independently associated with incident HF (HR 1.77; 95% CI 1.02-3.02; P = 0.04), particularly incident HF with preserved ejection fraction (HFpEF; HR 2.44; 95% CI 1.23-4.84; P = 0.01) but not HF with reduced ejection fraction (HFrEF; HR 0.95; 95% CI 0.36-2.46; P = 0.91). Previously reported circulating SLPI protein quantitative trait loci (pQTLs) were not associated with serum SLPI levels or incident HF among MESA participants. In conclusion, baseline serum SLPI levels, but not genetically-determined serum SLPI, were significantly associated with incident HF and HFpEF over long-term follow-up in a multi-ethnic cohort. Serum circulating SLPI may be a correlate of inflammation that sheds insight on the pathobiology of HFpEF.
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Affiliation(s)
- Konrad Teodor Sawicki
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Drew R. Nannini
- grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Suzette J. Bielinski
- grid.66875.3a0000 0004 0459 167XDepartment of Quantitative Health Sciences, Mayo Clinic, 200 First Street Southwest, Rochester, MN USA
| | - Nicholas B. Larson
- grid.66875.3a0000 0004 0459 167XDepartment of Quantitative Health Sciences, Mayo Clinic, 200 First Street Southwest, Rochester, MN USA
| | - Donald M. Lloyd-Jones
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Bruce Psaty
- grid.34477.330000000122986657Cardiovascular Health Research Unit, Department of Health Systems and Population Health, University of Washington, Seattle, WA USA
| | - Kent D. Taylor
- grid.513199.6Institute for Translational Genomics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA USA
| | - Sanjiv J. Shah
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Laura J. Rasmussen-Torvik
- grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - John T. Wilkins
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Elizabeth M. McNally
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Ravi B. Patel
- grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, 676 N St Clair St, Suite 600, Chicago, IL 60611 USA
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8
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Pracht K, Wittner J, Kagerer F, Jäck HM, Schuh W. The intestine: A highly dynamic microenvironment for IgA plasma cells. Front Immunol 2023; 14:1114348. [PMID: 36875083 PMCID: PMC9977823 DOI: 10.3389/fimmu.2023.1114348] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/23/2023] [Indexed: 02/18/2023] Open
Abstract
To achieve longevity, IgA plasma cells require a sophisticated anatomical microenvironment that provides cytokines, cell-cell contacts, and nutrients as well as metabolites. The intestinal epithelium harbors cells with distinct functions and represents an important defense line. Anti-microbial peptide-producing paneth cells, mucus-secreting goblet cells and antigen-transporting microfold (M) cells cooperate to build a protective barrier against pathogens. In addition, intestinal epithelial cells are instrumental in the transcytosis of IgA to the gut lumen, and support plasma cell survival by producing the cytokines APRIL and BAFF. Moreover, nutrients are sensed through specialized receptors such as the aryl hydrocarbon receptor (AhR) by both, intestinal epithelial cells and immune cells. However, the intestinal epithelium is highly dynamic with a high cellular turn-over rate and exposure to changing microbiota and nutritional factors. In this review, we discuss the spatial interplay of the intestinal epithelium with plasma cells and its potential contribution to IgA plasma cell generation, homing, and longevity. Moreover, we describe the impact of nutritional AhR ligands on intestinal epithelial cell-IgA plasma cell interaction. Finally, we introduce spatial transcriptomics as a new technology to address open questions in intestinal IgA plasma cell biology.
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Affiliation(s)
- Katharina Pracht
- Division of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Center, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jens Wittner
- Division of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Center, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Fritz Kagerer
- Division of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Center, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Hans-Martin Jäck
- Division of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Center, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Wolfgang Schuh
- Division of Molecular Immunology, Department of Internal Medicine 3, Nikolaus-Fiebiger-Center, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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9
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Zhou B, Huang H, Gui F, Bi S, Du H, Cao L. Enhancement of intestinal mucosal immunity and immune response to the foot-and-mouth disease vaccine by oral administration of danggui buxue decoction. Front Vet Sci 2022; 9:1045152. [PMID: 36425118 PMCID: PMC9679645 DOI: 10.3389/fvets.2022.1045152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/13/2022] [Indexed: 11/10/2022] Open
Abstract
This study investigated the effect of Danggui Buxue decoction (DBD) on the immunity of an O-type foot-and-mouth disease (FMD) vaccine and intestinal mucosal immunity. SPF KM mice were continuously and orally administered DBD for 5 d and then inoculated with an O-type FMD vaccine. The contents of a specific IgG antibody and its isotypes IgG1, IgG2a, IgG2b, and IgG3 in serum and SIgA in duodenal mucosa were determined by ELISA at 1 and 3 W after the 2nd immunization. qRT-PCR was used to detect mRNA expression levels of IL-4, IL-10, IFN-γ, and IL-33 in the spleen, and mRNA expression levels of J-chain, pIgR, BAFF, APRIL, IL-10, IFN-γ and IL-33 in the duodenum. The results showed that compared with the control group, oral administration of DBD significantly increased levels of the anti-FMD virus (FMDV)-specific antibodies IgG, IgG1, and IgG2a in the serum of O-type FMD vaccine-immunized mice 1 W after the 2nd immunization (P < 0.05), upregulated mRNA expression levels of spleen lymphocyte cytokines IL-4 and IL-33 (P < 0.05), promoted the secretion of SIgA in duodenal mucosa (P < 0.05). The mRNA expression levels of J-chain, pIgR, BAFF, APRIL, IL-10, and IL-33 in duodenal tissues were upregulated (P < 0.05). This study indicates that DBD has a good promotion effect on the O-type FMD vaccine and the potential to be an oral immune booster.
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Affiliation(s)
- Bingxin Zhou
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Huan Huang
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Fuxing Gui
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Shicheng Bi
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Rongchang, Chongqing, China
- Chongqing Engineering Research Center of Veterinary Medicine, Chongqing, China
| | - Hongxu Du
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
- Chongqing Engineering Research Center of Veterinary Medicine, Chongqing, China
- Chi Institute of Traditional Chinese Veterinary Medicine, Southwest University, Chongqing, China
| | - Liting Cao
- Department of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Southwest University, Chongqing, China
- Chongqing Engineering Research Center of Veterinary Medicine, Chongqing, China
- Chi Institute of Traditional Chinese Veterinary Medicine, Southwest University, Chongqing, China
- *Correspondence: Liting Cao
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10
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Jasiński M, Biliński J, Basak GW. The Role of the Crosstalk Between Gut Microbiota and Immune Cells in the Pathogenesis and Treatment of Multiple Myeloma. Front Immunol 2022; 13:853540. [PMID: 35432306 PMCID: PMC9009288 DOI: 10.3389/fimmu.2022.853540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/28/2022] [Indexed: 11/26/2022] Open
Abstract
Around 10% of all hematologic malignancies are classified as multiple myeloma (MM), the second most common malignancy within that group. Although massive progress in developing of new drugs against MM has been made in recent years, MM is still an incurable disease, and every patient eventually has relapse refractory to any known treatment. That is why further and non-conventional research elucidating the role of new factors in MM pathogenesis is needed, facilitating discoveries of the new drugs. One of these factors is the gut microbiota, whose role in health and disease is still being explored. This review presents the continuous changes in the gut microbiota composition during our whole life with a particular focus on its impact on our immune system. Additionally, it mainly focuses on the chronic antigenic stimulation of B-cells as the leading mechanism responsible for MM promotion. The sophisticated interactions between microorganisms colonizing our gut, immune cells (dendritic cells, macrophages, neutrophils, T/B cells, plasma cells), and intestinal epithelial cells will be shown. That article summarizes the current knowledge about the initiation of MM cells, emphasizing the role of microorganisms in that process.
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Affiliation(s)
- Marcin Jasiński
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland.,Doctoral School, Medical University of Warsaw, Warsaw, Poland
| | - Jarosław Biliński
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland.,Human Biome Institute, Gdańsk, Poland
| | - Grzegorz W Basak
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland.,Human Biome Institute, Gdańsk, Poland
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11
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Toll-Like Receptors as Drug Targets in the Intestinal Epithelium. Handb Exp Pharmacol 2021; 276:291-314. [PMID: 34783909 DOI: 10.1007/164_2021_563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Toll-like receptors (TLRs) receptors are responsible for initiation of inflammatory responses by their recognition of molecular patterns present in invading microorganisms (such as bacteria, viruses or fungi) or in molecules released following tissue damage in disease states. Expressed in the intestinal epithelium, they initiate an intracellular signalling cascade in response to molecular patterns resulting in the activation of transcription factors and the release of cytokines, chemokines and vasoactive molecules. Intestinal epithelial cells are exposed to microorganisms on a daily basis and form part of the primary defence against pathogens by using TLRs. TLRs and their accessory molecules are subject to tight regulation in these cells so as to not overreact or react in unnecessary circumstances. TLRs have more recently been associated with chronic inflammatory diseases as a result of inappropriate regulation, this can be damaging and lead to chronic inflammatory diseases such as inflammatory bowel disease (IBD). Targeting Toll-like receptors offers a potential therapeutic approach for IBD. In this review, the current knowledge on the TLRs is reviewed along with their association with intestinal diseases. Finally, compounds that target TLRs in animal models of IBD, clinic trials and their future merit as targets are discussed.
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12
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Zheng M, Mao K, Fang D, Li D, Lyu J, Peng D, Chen X, Cannon N, Hu G, Han J, Zhao K, Chen W, Zhu J. B cell residency but not T cell-independent IgA switching in the gut requires innate lymphoid cells. Proc Natl Acad Sci U S A 2021; 118:e2106754118. [PMID: 34187897 PMCID: PMC8271577 DOI: 10.1073/pnas.2106754118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Immunoglobulin A (IgA)-producing plasma cells derived from conventional B cells in the gut play an important role in maintaining the homeostasis of gut flora. Both T cell-dependent and T cell-independent IgA class switching occurs in the lymphoid structures in the gut, whose formation depends on lymphoid tissue inducers (LTis), a subset of innate lymphoid cells (ILCs). However, our knowledge on the functions of non-LTi helper-like ILCs, the innate counter parts of CD4 T helper cells, in promoting IgA production is still limited. By cell adoptive transfer and utilizing a unique mouse strain, we demonstrated that the generation of IgA-producing plasma cells from B cells in the gut occurred efficiently in the absence of both T cells and helper-like ILCs and without engaging TGF-β signaling. Nevertheless, B cell recruitment and/or retention in the gut required functional NKp46-CCR6+ LTis. Therefore, while CCR6+ LTis contribute to the accumulation of B cells in the gut through inducing lymphoid structure formation, helper-like ILCs are not essential for the T cell-independent generation of IgA-producing plasma cells.
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Affiliation(s)
- Mingzhu Zheng
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
| | - Kairui Mao
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Difeng Fang
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
| | - Dan Li
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, People's Republic of China
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou 215004, People's Republic of China
| | - Jun Lyu
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, People's Republic of China
| | - Dingkang Peng
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
- The Third Xiangya Hospital, Central South University, Changsha 410013, People's Republic of China
| | - Xi Chen
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892
| | - Nikki Cannon
- Bioinformatics Core, West Virginia University, Morgantown, WV 26506
| | - Gangqing Hu
- Bioinformatics Core, West Virginia University, Morgantown, WV 26506
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV 26506
| | - Jiajia Han
- Mucosal Immunology Section, National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD 20892
| | - Keji Zhao
- Laboratory of Epigenome Biology, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892
| | - Wanjun Chen
- Mucosal Immunology Section, National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD 20892
| | - Jinfang Zhu
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892;
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13
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Nugteren S, Samsom JN. Secretory Leukocyte Protease Inhibitor (SLPI) in mucosal tissues: Protects against inflammation, but promotes cancer. Cytokine Growth Factor Rev 2021; 59:22-35. [PMID: 33602652 DOI: 10.1016/j.cytogfr.2021.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 01/24/2021] [Indexed: 12/20/2022]
Abstract
The immune system is continuously challenged with large quantities of exogenous antigens at the barriers between the external environment and internal human tissues. Antimicrobial activity is essential at these sites, though the immune responses must be tightly regulated to prevent tissue destruction by inflammation. Secretory Leukocyte Protease Inhibitor (SLPI) is an evolutionarily conserved, pleiotropic protein expressed at mucosal surfaces, mainly by epithelial cells. SLPI inhibits proteases, exerts antimicrobial activity and inhibits nuclear factor-kappa B (NF-κB)-mediated inflammatory gene transcription. SLPI maintains homeostasis at barrier tissues by preventing tissue destruction and regulating the threshold of inflammatory immune responses, while protecting the host from infection. However, excessive expression of SLPI in cancer cells may have detrimental consequences, as recent studies demonstrate that overexpression of SLPI increases the metastatic potential of epithelial tumors. Here, we review the varied functions of SLPI in the respiratory tract, skin, gastrointestinal tract and genitourinary tract, and then discuss the mechanisms by which SLPI may contribute to cancer.
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Affiliation(s)
- Sandrine Nugteren
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Janneke N Samsom
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, the Netherlands.
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14
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Lee DSW, Rojas OL, Gommerman JL. B cell depletion therapies in autoimmune disease: advances and mechanistic insights. Nat Rev Drug Discov 2021; 20:179-199. [PMID: 33324003 PMCID: PMC7737718 DOI: 10.1038/s41573-020-00092-2] [Citation(s) in RCA: 276] [Impact Index Per Article: 92.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2020] [Indexed: 01/30/2023]
Abstract
In the past 15 years, B cells have been rediscovered to be not merely bystanders but rather active participants in autoimmune aetiology. This has been fuelled in part by the clinical success of B cell depletion therapies (BCDTs). Originally conceived as a method of eliminating cancerous B cells, BCDTs such as those targeting CD20, CD19 and BAFF are now used to treat autoimmune diseases, including systemic lupus erythematosus and multiple sclerosis. The use of BCDTs in autoimmune disease has led to some surprises. For example, although antibody-secreting plasma cells are thought to have a negative pathogenic role in autoimmune disease, BCDT, even when it controls the disease, has limited impact on these cells and on antibody levels. In this Review, we update our understanding of B cell biology, review the results of clinical trials using BCDT in autoimmune indications, discuss hypotheses for the mechanism of action of BCDT and speculate on evolving strategies for targeting B cells beyond depletion.
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Affiliation(s)
- Dennis S. W. Lee
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Olga L. Rojas
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Jennifer L. Gommerman
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
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15
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Möckel T, Basta F, Weinmann-Menke J, Schwarting A. B cell activating factor (BAFF): Structure, functions, autoimmunity and clinical implications in Systemic Lupus Erythematosus (SLE). Autoimmun Rev 2020; 20:102736. [PMID: 33333233 DOI: 10.1016/j.autrev.2020.102736] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 08/28/2020] [Indexed: 12/30/2022]
Abstract
The B cell activating factor (BAFF), or B lymphocyte stimulator (BLyS), is a B cell survival factor which supports autoreactive B cells and prevents their deletion. BAFF expression is closely linked with autoimmunity and is enhanced by genetic alterations and viral infections. Furthermore, BAFF seems to be involved in adipogenesis, atherosclerosis, neuro-inflammatory processes and ischemia reperfusion (I/R) injury. BAFF is commonly overexpressed in Systemic Lupus Erythematosus (SLE) and strongly involved in the pathogenesis of the disease. The relationship between BAFF levels, disease activity and damage accrual in SLE is controversial, but growing evidence is emerging on its role in renal involvement. Belimumab, a biologic BAFF inhibitor, has been the first biologic agent licensed for SLE therapy so far. As Rituximab (RTX) has been shown to increase BAFF levels following B cell depletion, the combination therapy of RTX plus belimumab (being evaluated in two RCT) seems to be a valuable option for several clinical scenarios. In this review we will highlight the growing body of evidence of immune and non-immune related BAFF expression in experimental and clinical settings.
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Affiliation(s)
- Tamara Möckel
- Department of Internal Medicine I, Division of Rheumatology and Clinical Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
| | - Fabio Basta
- Acura Rheumatology Center Rhineland Palatinate, Bad Kreuznach, Germany
| | - Julia Weinmann-Menke
- Department of Internal Medicine I, Division of Nephrology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Andreas Schwarting
- Department of Internal Medicine I, Division of Rheumatology and Clinical Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany; Acura Rheumatology Center Rhineland Palatinate, Bad Kreuznach, Germany
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16
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Nugteren S, Goos JACM, Delis-van Diemen PM, Simons-Oosterhuis Y, Lindenbergh-Kortleve DJ, van Haaften DH, Sanders J, Meijer GA, Fijneman RJA, Samsom JN. Expression of the immune modulator secretory leukocyte protease inhibitor (SLPI) in colorectal cancer liver metastases and matched primary tumors is associated with a poorer prognosis. Oncoimmunology 2020; 9:1832761. [PMID: 33101778 PMCID: PMC7556627 DOI: 10.1080/2162402x.2020.1832761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Secretory leukocyte protease inhibitor (SLPI), a pleiotropic protein expressed by healthy intestinal epithelial cells, functions as an inhibitor of NF-κB and neutrophil proteases and exerts antimicrobial activity. We previously showed SLPI suppresses intestinal epithelial chemokine production in response to microbial contact. Increased SLPI expression was recently detected in various types of carcinoma. In addition, accumulating evidence indicates SLPI expression is favorable for tumor cells. In view of these findings and the abundance of SLPI in the colonic epithelium, we hypothesized SLPI promotes colorectal cancer (CRC) growth and metastasis. Here, we aimed to establish whether SLPI expression in CRC is related to clinical outcome. Using a cohort of 507 patients with CRC who underwent resection of liver metastases, we show that high SLPI protein expression in both liver metastases and primary CRC is associated with significantly shorter overall survival after resection of liver metastases. The prognostic value of SLPI in CRC patients with liver metastases implies a role for SLPI in the formation of metastasis of human CRC. Based on the immune regulatory functions of SLPI, we anticipate that expression of SLPI provides tumors with a mechanism to evade infiltration by immune cells.
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Affiliation(s)
- Sandrine Nugteren
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jeroen A C M Goos
- Departments of Clinical Neuroscience, Radiopharmacy, and Oncology & Pathology, Karolinska Institute, Stockholm, Sweden
| | | | - Ytje Simons-Oosterhuis
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Dicky J Lindenbergh-Kortleve
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Daniëlle H van Haaften
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joyce Sanders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Gerrit A Meijer
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Remond J A Fijneman
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Janneke N Samsom
- Laboratory of Pediatrics, Division Gastroenterology and Nutrition, Erasmus University Medical Center, Rotterdam, The Netherlands
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17
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Riaz S, Steinsland H, Hanevik K. Human Mucosal IgA Immune Responses against Enterotoxigenic Escherichia coli. Pathogens 2020; 9:pathogens9090714. [PMID: 32872549 PMCID: PMC7558491 DOI: 10.3390/pathogens9090714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/11/2020] [Accepted: 08/24/2020] [Indexed: 12/14/2022] Open
Abstract
Infection with enterotoxigenic Escherichia coli (ETEC) is a major contributor to diarrheal illness in children in low- and middle-income countries and travelers to these areas. There is an ongoing effort to develop vaccines against ETEC, and the most reliable immune correlate of protection against ETEC is considered to be the small intestinal secretory IgA response that targets ETEC-specific virulence factors. Since isolating IgA from small intestinal mucosa is technically and ethically challenging, requiring the use of invasive medical procedures, several other indirect methods are used as a proxy for gauging the small intestinal IgA responses. In this review, we summarize the literature reporting on anti-ETEC human IgA responses observed in blood, activated lymphocyte assayss, intestinal lavage/duodenal aspirates, and saliva from human volunteers being experimentally infected with ETEC. We describe the IgA response kinetics and responder ratios against classical and noncanonical ETEC antigens in the different sample types and discuss the implications that the results may have on vaccine development and testing.
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Affiliation(s)
- Saman Riaz
- Department of Clinical Science, University of Bergen, Jonas Lies veg 87, N-5021 Bergen, Norway;
- Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway
| | - Hans Steinsland
- Centre for Intervention Science in Maternal and Child Health, Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway;
- Department of Biomedicine, University of Bergen, 5020 Bergen, Norway
| | - Kurt Hanevik
- Department of Clinical Science, University of Bergen, Jonas Lies veg 87, N-5021 Bergen, Norway;
- Norwegian National Advisory Unit on Tropical Infectious Diseases, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
- Correspondence: ; Tel.: +47-5597-5000; Fax: +47-5597-2950
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18
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Jiang R, Fichtner ML, Hoehn KB, Pham MC, Stathopoulos P, Nowak RJ, Kleinstein SH, O'Connor KC. Single-cell repertoire tracing identifies rituximab-resistant B cells during myasthenia gravis relapses. JCI Insight 2020; 5:136471. [PMID: 32573488 DOI: 10.1172/jci.insight.136471] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 06/11/2020] [Indexed: 12/19/2022] Open
Abstract
Rituximab, a B cell-depleting therapy, is indicated for treating a growing number of autoantibody-mediated autoimmune disorders. However, relapses can occur after treatment, and autoantibody-producing B cell subsets may be found during relapses. It is not understood whether these autoantibody-producing B cell subsets emerge from the failed depletion of preexisting B cells or are generated de novo. To further define the mechanisms that cause postrituximab relapse, we studied patients with autoantibody-mediated muscle-specific kinase (MuSK) myasthenia gravis (MG) who relapsed after treatment. We carried out single-cell transcriptional and B cell receptor profiling on longitudinal B cell samples. We identified clones present before therapy that persisted during relapse. Persistent B cell clones included both antibody-secreting cells and memory B cells characterized by gene expression signatures associated with B cell survival. A subset of persistent antibody-secreting cells and memory B cells were specific for the MuSK autoantigen. These results demonstrate that rituximab is not fully effective at eliminating autoantibody-producing B cells and provide a mechanistic understanding of postrituximab relapse in MuSK MG.
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Affiliation(s)
| | - Miriam L Fichtner
- Department of Immunobiology and.,Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kenneth B Hoehn
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Panos Stathopoulos
- Department of Immunobiology and.,Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Richard J Nowak
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Steven H Kleinstein
- Department of Immunobiology and.,Interdepartmental Program in Computational Biology & Bioinformatics, Yale University, New Haven, Connecticut, USA.,Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kevin C O'Connor
- Department of Immunobiology and.,Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
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19
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Gohy S, Hupin C, Ladjemi MZ, Hox V, Pilette C. Key role of the epithelium in chronic upper airways diseases. Clin Exp Allergy 2019; 50:135-146. [PMID: 31746062 DOI: 10.1111/cea.13539] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/15/2019] [Accepted: 11/15/2019] [Indexed: 12/18/2022]
Abstract
The respiratory epithelium of the upper airways is a first-line defence against inhaled irritants, pathogens and allergens. It ensures a physical barrier provided by apical junctions and mucociliary clearance to avoid excessive activation of the immune system. The epithelium also forms a chemical and immunological barrier, extensively equipped to protect the airways against external aggressions before the adaptive immune system is required. Under normal circumstances, the epithelium is capable of recovering rapidly after damage. This manuscript reviews these main properties of the upper airway epithelium as well as its reported impairments in chronic inflammatory diseases. The knowledge on normal epithelial functions and their dysregulation in upper airway diseases should help to design new epithelial-targeted treatments.
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Affiliation(s)
- Sophie Gohy
- Pole of Pneumology, ENT and Dermatology, Université catholique de Louvain (UCL), Brussels, Belgium.,Department of Pneumology, Cliniques universitaires, Brussels, Belgium
| | - Cloé Hupin
- Pole of Pneumology, ENT and Dermatology, Université catholique de Louvain (UCL), Brussels, Belgium
| | - Maha Zohra Ladjemi
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Valérie Hox
- Department of Otorhinolaryngology, Cliniques universitaires, Brussels, Belgium
| | - Charles Pilette
- Pole of Pneumology, ENT and Dermatology, Université catholique de Louvain (UCL), Brussels, Belgium.,Department of Pneumology, Cliniques universitaires, Brussels, Belgium
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20
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Tezuka H, Ohteki T. Regulation of IgA Production by Intestinal Dendritic Cells and Related Cells. Front Immunol 2019; 10:1891. [PMID: 31456802 PMCID: PMC6700333 DOI: 10.3389/fimmu.2019.01891] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/26/2019] [Indexed: 12/31/2022] Open
Abstract
The intestinal mucosa is a physiological barrier for most microbes, including both commensal bacteria and invading pathogens. Under homeostatic conditions, immunoglobulin A (IgA) is the major immunoglobulin isotype in the intestinal mucosa. Microbes stimulate the production of IgA, which controls bacterial translocation and neutralizes bacterial toxins at the intestinal mucosal surface. In the intestinal mucosa, dendritic cells (DCs), specialized antigen-presenting cells, regulate both T-cell-dependent (TD) and -independent (TI) immune responses. The intestinal DCs are a heterogeneous population that includes unique subsets that induce IgA synthesis in B cells. The characteristics of intestinal DCs are strongly influenced by the microenvironment, including the presence of commensal bacterial metabolites and epithelial cell-derived soluble factors. In this review, we summarize the ontogeny, classification, and function of intestinal DCs and how the intestinal microenvironment conditions DCs and their precursors to become the mucosal phenotype, in particular to regulate IgA production, after they arrive at the intestine. Understanding the mechanism of IgA synthesis could provide insights for designing effective mucosal vaccines.
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Affiliation(s)
- Hiroyuki Tezuka
- Department of Cellular Function Analysis, Research Promotion and Support Headquarters, Fujita Health University, Aichi, Japan
| | - Toshiaki Ohteki
- Department of Biodefense Research, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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21
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Lange A, Cajander S, Magnuson A, Sundén-Cullberg J, Strålin K, Hultgren O. Plasma concentrations of secretory leukocyte protease inhibitor (SLPI) differ depending on etiology and severity in community-onset bloodstream infection. Eur J Clin Microbiol Infect Dis 2019; 38:1425-1434. [PMID: 31089838 PMCID: PMC6647850 DOI: 10.1007/s10096-019-03567-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 04/17/2019] [Indexed: 11/24/2022]
Abstract
The severity of bloodstream infections (BSI) depends on pathogen, source, and host factors. Secretory leukocyte protease inhibitor (SLPI) counteracts tissue damage, balances inflammation, and is increased in pneumonia and sepsis. We aimed to evaluate whether SLPI production differs depending on etiology, disease severity, and sex in BSI and to correlate SLPI with markers of inflammation and immunosuppression. Of the adult patients with BSI, 109 were included and sampled repeatedly, from hospital admission through day 28. Controls (blood donors) were sampled twice. SLPI in plasma was measured with enzyme-linked immunosorbent assay (ELISA) technique. Streptococcus pneumoniae and Staphylococcus aureus etiology were associated with higher SLPI than Escherichia coli on days 1–2 and 3. On day 1–2, subjects with sepsis had higher SLPI concentrations than those with non-septic BSI. Pneumonia was associated with higher SLPI than a non-pulmonary source of infection. SLPI co-varied with inflammatory markers. SLPI concentrations did not differ with regard to sex in the full cohort, but men with pneumonia had higher SLPI than women on day 1–2. S. pneumoniae and S. aureus BSI were associated with higher SLPI, when compared to E. coli. Severity and pneumonia, as well as male sex in the pneumonia sub-cohort, were factors independently associated with higher SLPI.
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Affiliation(s)
- Anna Lange
- Department of Infectious Diseases, Faculty of Medicine and Health, Örebro University, SE-70182, Örebro, Sweden.
| | - Sara Cajander
- Department of Infectious Diseases, Faculty of Medicine and Health, Örebro University, SE-70182, Örebro, Sweden
| | - Anders Magnuson
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, SE-70182, Örebro, Sweden
| | - Jonas Sundén-Cullberg
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
- Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Kristoffer Strålin
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
- Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Olof Hultgren
- Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Faculty of Medicine and Health, Örebro University, SE-70182, Örebro, Sweden
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22
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CD4 + T Cell Regulation of Antibodies Cross-Reactive with Fungal Cell Wall-Associated Carbohydrates after Pneumocystis murina Infection. Infect Immun 2019; 87:IAI.00158-19. [PMID: 31010812 DOI: 10.1128/iai.00158-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/13/2019] [Indexed: 01/02/2023] Open
Abstract
Pneumocystis pneumonia is a life-threatening opportunistic fungal infection observed in individuals with severe immunodeficiencies, such as AIDS. Molecules with the ability to bind β-glucan and signal at Fcγ receptors enhance defense against Pneumocystis f. sp. murina, though it is unclear whether antibodies reactive with fungal cell wall carbohydrates are induced during Pneumocystis infection. We observed that systemic and lung mucosal immunoglobulins cross-reactive with β-glucan and chitosan/chitin are generated after Pneumocystis infection, with increased quantities within the lung mucosal fluid after challenge. While IgG responses against Pneumocystis protein antigens are markedly CD4+ T cell dependent, CD4+ T cell depletion did not impact quantities of IgG cross-reactive with β-glucan or chitosan/chitin in the serum or mucosa after challenge. Notably, lung mucosal quantities of IgA cross-reactive with β-glucan or chitosan/chitin are decreased in the setting of CD4+ T cell deficiency, occurring in the setting of concurrent reduced quantities of active transforming growth factor β, while mucosal IgM is significantly increased in the setting of CD4+ T cell deficiency. Interleukin-21 receptor deficiency does not lead to reduction in mucosal IgA reactive with fungal carbohydrate antigens after Pneumocystis challenge. These studies demonstrate differential CD4+ T cell-dependent regulation of mucosal antibody responses against β-glucan and chitosan/chitin after Pneumocystis challenge, suggesting that different B cell subsets may be responsible for the generation of these antibody responses, and suggest a potential immune response against fungi that may be operative in the setting of CD4+ T cell-related immunodeficiency.
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23
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Jenks SA, Cashman KS, Woodruff MC, Lee FEH, Sanz I. Extrafollicular responses in humans and SLE. Immunol Rev 2019; 288:136-148. [PMID: 30874345 PMCID: PMC6422038 DOI: 10.1111/imr.12741] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/18/2019] [Indexed: 12/14/2022]
Abstract
Chronic autoimmune diseases, and in particular Systemic Lupus Erythematosus (SLE), are endowed with a long-standing autoreactive B-cell compartment that is presumed to reactivate periodically leading to the generation of new bursts of pathogenic antibody-secreting cells (ASC). Moreover, pathogenic autoantibodies are typically characterized by a high load of somatic hypermutation and in some cases are highly stable even in the context of prolonged B-cell depletion. Long-lived, highly mutated antibodies are typically generated through T-cell-dependent germinal center (GC) reactions. Accordingly, an important role for GC reactions in the generation of pathogenic autoreactivity has been postulated in SLE. Nevertheless, pathogenic autoantibodies and autoimmune disease can be generated through B-cell extrafollicular (EF) reactions in multiple mouse models and human SLE flares are characterized by the expansion of naive-derived activated effector B cells of extrafollicular phenotype. In this review, we will discuss the properties of the EF B-cell pathway, its relationship to other effector B-cell populations, its role in autoimmune diseases, and its contribution to human SLE. Furthermore, we discuss the relationship of EF B cells with Age-Associated B cells (ABCs), a TLR-7-driven B-cell population that mediates murine autoimmune and antiviral responses.
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Affiliation(s)
- Scott A. Jenks
- Department of Medicine, Division of Rheumatology, Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
- Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
| | - Kevin S. Cashman
- Department of Medicine, Division of Rheumatology, Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
- Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
| | - Matthew C. Woodruff
- Department of Medicine, Division of Rheumatology, Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
- Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
| | - F. Eun-Hyung Lee
- Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care, Emory University, Atlanta, Georgia, USA
| | - Ignacio Sanz
- Department of Medicine, Division of Rheumatology, Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
- Lowance Center for Human Immunology, Emory University, Atlanta, Georgia, USA
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24
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Chuluyan E, Casadei D, Ambrosi N, Caro F, Guerrieri D. The Role of Secretory Leukocyte Proteinase Inhibitor During Transplantation. CURRENT TRANSPLANTATION REPORTS 2019. [DOI: 10.1007/s40472-019-0226-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Segawa R, Shiraki M, Sudo S, Shigeeda K, Saito T, Mizuno N, Moriya T, Yonezawa T, Woo JT, Hiratsuka M, Hirasawa N. A chalcone derivative suppresses the induction of TSLP in mice and human keratinocytes and attenuates OVA-induced antibody production in mice. Eur J Pharmacol 2019; 851:52-62. [PMID: 30753864 DOI: 10.1016/j.ejphar.2019.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 02/05/2019] [Accepted: 02/08/2019] [Indexed: 11/28/2022]
Abstract
Thymic stromal lymphopoietin (TSLP) is a key epithelial-derived factor that aggravates allergic diseases. Therefore, TSLP inhibitors are candidate compounds for the treatment of allergic diseases. Previously, we reported that KCMH-1, a mouse keratinocyte cell line, constitutively produces TSLP. In this study, we tried to identify inhibitors of TSLP by screening 2169 compounds in KCMH-1 cells and found one such chalcone derivative (code no. 16D10). 16D10 inhibited TSLP expression and TSLP promoter activation in HaCaT cells, a human keratinocyte cell line. Although nuclear factor kappa-B (NF-κB) is a key transcription factor for the induction of TSLP, 16D10 did not inhibit the activation pathway of NF-κB, such as degradation of inhibitor of κB (IκB) and p65 nuclear translocation. 16D10 activated the Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor (erythroid-derived 2)-like 2 (Nrf2) system, although this system was not involved in the inhibitory effect of 16D10. 16D10 also inhibited TSLP production in a lipopolysaccharide (LPS)- or ovalbumin (OVA)-induced air-pouch-type inflammation model. Further, repeated 16D10 administration diminished serum immunoglobulin G1 (IgG1) and IgE concentration in an OVA-induced air-pouch-type sensitization model. Taken together, these results indicate that 16D10 is an inhibitor of TSLP production and has an anti-allergic effect. This inhibitory effect is independent of the activation of NF-κB and the Keap1-Nrf2 system. Therefore, 16D10 could be a new type of candidate drug for allergic diseases.
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Affiliation(s)
- Ryosuke Segawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Mika Shiraki
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Shiori Sudo
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Kenichi Shigeeda
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Taiji Saito
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Natsumi Mizuno
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Takahiro Moriya
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan; Department of Pharmacology, School of Pharmaceutical Sciences, Ohu University, Koriyama 963-8611, Fukushima, Japan
| | - Takayuki Yonezawa
- Research Institute for Biological Functions, Chubu University, Kasugai 487-8501, Aichi, Japan
| | - Je-Tae Woo
- Department of Biological Chemistry, College of Bioscience and Biotechnology, Chubu University, Kasugai 487-8501, Aichi, Japan
| | - Masahiro Hiratsuka
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Miyagi, Japan.
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26
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P. McKernan D. Toll-like receptors and immune cell crosstalk in the intestinal epithelium. AIMS ALLERGY AND IMMUNOLOGY 2019. [DOI: 10.3934/allergy.2019.1.13] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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27
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Cen SY, Moreau JM, Furlonger C, Berger A, Paige CJ. Differential regulation of IgA + B cells in vitro by stromal cells from distinctive anatomical compartments. J Leukoc Biol 2018; 105:507-518. [PMID: 30576006 DOI: 10.1002/jlb.1a0517-172rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 11/06/2018] [Accepted: 11/20/2018] [Indexed: 12/19/2022] Open
Abstract
B cell development is regulated by stromal cells (SCs) that form a supportive microenvironment. These SCs along with other cell types produce cytokines, chemokines, and adhesion molecules that guide B cell commitment and differentiation. BM, spleen (Sp), and the gut lamina propria (LP) constitute distinctive anatomical compartments that support B cell differentiation. In order to characterize and compare the signals necessary to generate IgA+ B cells, we developed an in vitro system to co-culture gut LP, BM, or Sp-derived SCs with B lineage cells. Using this co-culture system, we found that gut LP SCs promote IgA+ B cell accumulation through the production of soluble stimulatory factors. In contrast to gut LP SCs, BM and splenic SCs were found to impair IgA+ B cell accumulation in vitro. Taken together, these observations provide new insights into how SCs derived from different anatomical locations shape IgA+ B cell responses.
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Affiliation(s)
- Selena Y Cen
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Joshua M Moreau
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Caren Furlonger
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Alexandra Berger
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Christopher J Paige
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
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28
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Nayar S, Campos J, Smith CG, Iannizzotto V, Gardner DH, Colafrancesco S, Pipi E, Kollert F, Hunter KJ, Brewer C, Buckley CD, Bowman SJ, Priori R, Valesini G, Juarez M, Fahy WA, Fisher BA, Payne A, Allen RA, Barone F. Phosphatidylinositol 3-kinase delta pathway: a novel therapeutic target for Sjögren's syndrome. Ann Rheum Dis 2018; 78:249-260. [PMID: 30472652 PMCID: PMC6352416 DOI: 10.1136/annrheumdis-2017-212619] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 09/28/2018] [Accepted: 10/18/2018] [Indexed: 01/08/2023]
Abstract
Background The phosphatidylinositol 3-kinase delta isoform (PI3Kδ) belongs to an intracellular lipid kinase family that regulate lymphocyte metabolism, survival, proliferation, apoptosis and migration and has been successfully targeted in B-cell malignancies. Primary Sjögren’s syndrome (pSS) is a chronic immune-mediated inflammatory disease characterised by exocrine gland lymphocytic infiltration and B-cell hyperactivation which results in systemic manifestations, autoantibody production and loss of glandular function. Given the central role of B cells in pSS pathogenesis, we investigated PI3Kδ pathway activation in pSS and the functional consequences of blocking PI3Kδ in a murine model of focal sialoadenitis that mimics some features of pSS. Methods and results Target validation assays showed significant expression of phosphorylated ribosomal protein S6 (pS6), a downstream mediator of the phosphatidylinositol 3-kinase delta (PI3Kδ) pathway, within pSS salivary glands. pS6 distribution was found to co-localise with T/B cell markers within pSS aggregates and the CD138+ plasma cells infiltrating the glands. In vivo blockade of PI3Kδ activity with seletalisib, a PI3Kδ-selective inhibitor, in a murine model of focal sialoadenitis decreased accumulation of lymphocytes and plasma cells within the glands of treated mice in the prophylactic and therapeutic regimes. Additionally, production of lymphoid chemokines and cytokines associated with ectopic lymphoneogenesis and, remarkably, saliva flow and autoantibody production, were significantly affected by treatment with seletalisib. Conclusion These data demonstrate activation of PI3Kδ pathway within the glands of patients with pSS and its contribution to disease pathogenesis in a model of disease, supporting the exploration of the therapeutic potential of PI3Kδ pathway inhibition in this condition.
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Affiliation(s)
- Saba Nayar
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Joana Campos
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Charlotte G Smith
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Valentina Iannizzotto
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - David H Gardner
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Serena Colafrancesco
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK.,Dipartimento di Medicina Interna e Specialita' Mediche, Sapienza, University of Rome, Rome, Italy
| | - Elena Pipi
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Florian Kollert
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK.,Rheumatology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Department of Rheumatology, Immunology and Allergology, University Hospital, University of Bern, Bern, Switzerland
| | - Kelly J Hunter
- Immunology, HBRC, University of Birmingham, Birmingham, UK
| | | | - Christopher Dominic Buckley
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Sandwell and West Birmingham NHS Foundation Trust & Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Simon J Bowman
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK
| | - Roberta Priori
- Dipartimento di Medicina Interna e Specialita' Mediche, Sapienza, University of Rome, Rome, Italy
| | - Guido Valesini
- Dipartimento di Medicina Interna e Specialita' Mediche, Sapienza, University of Rome, Rome, Italy
| | | | | | - Benjamin A Fisher
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Sandwell and West Birmingham NHS Foundation Trust & Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | | | | | - Francesca Barone
- Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham, Research Laboratories, Queen Elizabeth Hospital, Birmingham, UK .,Rheumatology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
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29
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Reardon C, Murray K, Lomax AE. Neuroimmune Communication in Health and Disease. Physiol Rev 2018; 98:2287-2316. [PMID: 30109819 PMCID: PMC6170975 DOI: 10.1152/physrev.00035.2017] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 12/14/2022] Open
Abstract
The immune and nervous systems are tightly integrated, with each system capable of influencing the other to respond to infectious or inflammatory perturbations of homeostasis. Recent studies demonstrating the ability of neural stimulation to significantly reduce the severity of immunopathology and consequently reduce mortality have led to a resurgence in the field of neuroimmunology. Highlighting the tight integration of the nervous and immune systems, afferent neurons can be activated by a diverse range of substances from bacterial-derived products to cytokines released by host cells. While activation of vagal afferents by these substances dominates the literature, additional sensory neurons are responsive as well. It is becoming increasingly clear that although the cholinergic anti-inflammatory pathway has become the predominant model, a multitude of functional circuits exist through which neuronal messengers can influence immunological outcomes. These include pathways whereby efferent signaling occurs independent of the vagus nerve through sympathetic neurons. To receive input from the nervous system, immune cells including B and T cells, macrophages, and professional antigen presenting cells express specific neurotransmitter receptors that affect immune cell function. Specialized immune cell populations not only express neurotransmitter receptors, but express the enzymatic machinery required to produce neurotransmitters, such as acetylcholine, allowing them to act as signaling intermediaries. Although elegant experiments have begun to decipher some of these interactions, integration of these molecules, cells, and anatomy into defined neuroimmune circuits in health and disease is in its infancy. This review describes these circuits and highlights continued challenges and opportunities for the field.
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Affiliation(s)
- Colin Reardon
- Department of Anatomy, Physiology, and Cell Biology, UC Davis School of Veterinary Medicine, UC Davis, Davis, California ; and Department of Biomedical and Molecular Sciences and Department of Medicine, Queen's University , Kingston, Ontario , Canada
| | - Kaitlin Murray
- Department of Anatomy, Physiology, and Cell Biology, UC Davis School of Veterinary Medicine, UC Davis, Davis, California ; and Department of Biomedical and Molecular Sciences and Department of Medicine, Queen's University , Kingston, Ontario , Canada
| | - Alan E Lomax
- Department of Anatomy, Physiology, and Cell Biology, UC Davis School of Veterinary Medicine, UC Davis, Davis, California ; and Department of Biomedical and Molecular Sciences and Department of Medicine, Queen's University , Kingston, Ontario , Canada
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30
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Vandooren J, Goeminne P, Boon L, Ugarte-Berzal E, Rybakin V, Proost P, Abu El-Asrar AM, Opdenakker G. Neutrophils and Activated Macrophages Control Mucosal Immunity by Proteolytic Cleavage of Antileukoproteinase. Front Immunol 2018; 9:1154. [PMID: 29892293 PMCID: PMC5985294 DOI: 10.3389/fimmu.2018.01154] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/08/2018] [Indexed: 12/13/2022] Open
Abstract
Antileukoproteinase or secretory leukocyte peptidase inhibitor is a small protein which protects the mucosal linings against excessive proteolysis, inflammation, and microbial infection. We discovered that gelatinase B or matrix metalloproteinase (MMP)-9, a secreted zinc-dependent endopeptidase typically found at sites of inflammation, destroys antileukoproteinase by cleavages within both of its two functional domains: the anti-microbial N-terminal and the anti-proteolytic C-terminal domains. Cleaved antileukoproteinase possessed a significantly lower ability to bind lipopolysaccharides (LPS) and a reduced capacity to inhibit neutrophil elastase (NE) activity. Whereas intact antileukoproteinase repressed proinflammatory transcript [prostaglandin-endoperoxide synthase 2 (PTGS2) and IL6] synthesis and protein secretion [e.g., of MMP-9] in human CD14+ blood monocytes stimulated with LPS, this effect was reduced or lost for cleaved antileukoproteinase. We demonstrated the in vivo presence of antileukoproteinase cleavage fragments in lower airway secretions of non-cystic fibrosis bronchiectasis patients with considerable levels of neutrophils and, hence, elastase and MMP-9 activity. As a comparison, other MMPs (MMP-2, MMP-7, and MMP-8) and serine proteases (NE, cathepsin G, and proteinase 3) were also able to cleave antileukoproteinase with similar or reduced efficiency. In conclusion, in specific mucosal pathologies, such as bronchiectasis, neutrophils, and macrophage subsets control local immune reactions by proteolytic regulation, here described as the balance between MMPs (in particular MMP-9), serine proteases and local tissue inhibitors.
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Affiliation(s)
- Jennifer Vandooren
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
| | - Pieter Goeminne
- Department of Respiratory Disease, University Hospital of Gasthuisberg, Leuven, Belgium.,Department of Respiratory Disease, AZ Nikolaas, Sint-Niklaas, Belgium
| | - Lise Boon
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
| | - Estefania Ugarte-Berzal
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
| | - Vasily Rybakin
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
| | - Ahmed M Abu El-Asrar
- Department of Ophthalmology and Dr. Nasser Al-Rashid Research Chair in Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ghislain Opdenakker
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, KU Leuven, Leuven, Belgium
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31
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NAD(P)H Oxidase Activity in the Small Intestine Is Predominantly Found in Enterocytes, Not Professional Phagocytes. Int J Mol Sci 2018; 19:ijms19051365. [PMID: 29734661 PMCID: PMC5983677 DOI: 10.3390/ijms19051365] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/10/2018] [Accepted: 04/27/2018] [Indexed: 12/20/2022] Open
Abstract
The balance between various cellular subsets of the innate and adaptive immune system and microbiota in the gastrointestinal tract is carefully regulated to maintain tolerance to the normal flora and dietary antigens, while protecting against pathogens. The intestinal epithelial cells and the network of dendritic cells and macrophages in the lamina propria are crucial lines of defense that regulate this balance. The complex relationship between the myeloid compartment (dendritic cells and macrophages) and lymphocyte compartment (T cells and innate lymphoid cells), as well as the impact of the epithelial cell layer have been studied in depth in recent years, revealing that the regulatory and effector functions of both innate and adaptive immune compartments exhibit more plasticity than had been previously appreciated. However, little is known about the metabolic activity of these cellular compartments, which is the basic function underlying all other additional tasks the cells perform. Here we perform intravital NAD(P)H fluorescence lifetime imaging in the small intestine of fluorescent reporter mice to monitor the NAD(P)H-dependent metabolism of epithelial and myeloid cells. The majority of myeloid cells which comprise the surveilling network in the lamina propria have a low metabolic activity and remain resting even upon stimulation. Only a few myeloid cells, typically localized at the tip of the villi, are metabolically active and are able to activate NADPH oxidases upon stimulation, leading to an oxidative burst. In contrast, the epithelial cells are metabolically highly active and, although not considered professional phagocytes, are also able to activate NADPH oxidases, leading to massive production of reactive oxygen species. Whereas the oxidative burst in myeloid cells is mainly catalyzed by the NOX2 isotype, in epithelial cells other isotypes of the NADPH oxidases family are involved, especially NOX4. They are constitutively expressed by the epithelial cells, but activated only on demand to ensure rapid defense against pathogens. This minimizes the potential for inadvertent damage from resting NOX activation, while maintaining the capacity to respond quickly if needed.
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Gonçalves P, Araújo JR, Di Santo JP. A Cross-Talk Between Microbiota-Derived Short-Chain Fatty Acids and the Host Mucosal Immune System Regulates Intestinal Homeostasis and Inflammatory Bowel Disease. Inflamm Bowel Dis 2018; 24:558-572. [PMID: 29462379 DOI: 10.1093/ibd/izx029] [Citation(s) in RCA: 236] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 12/22/2022]
Abstract
Gut microbiota has a fundamental role in the energy homeostasis of the host and is essential for proper "education" of the immune system. Intestinal microbial communities are able to ferment dietary fiber releasing short-chain fatty acids (SCFAs). The SCFAs, particularly butyrate (BT), regulate innate and adaptive immune cell generation, trafficing, and function. For example, BT has an anti-inflammatory effect by inhibiting the recruitment and proinflammatory activity of neutrophils, macrophages, dendritic cells, and effector T cells and by increasing the number and activity of regulatory T cells. Gut microbial dysbiosis, ie, a microbial community imbalance, has been suggested to play a role in the development of inflammatory bowel disease (IBD). The relationship between dysbiosis and IBD has been difficult to prove, especially in humans, and is probably complex and dynamic, rather than one of a simple cause and effect relationship. However, IBD patients have dysbiosis with reduced numbers of SCFAs-producing bacteria and reduced BT concentration that is linked to a marked increase in the number of proinflammatory immune cells in the gut mucosa of these patients. Thus, microbial dysbiosis and reduced BT concentration may be a factor in the emergence and severity of IBD. Understanding the relationship between microbial dysbiosis and reduced BT concentration to IBD may lead to novel therapeutic interventions.
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Affiliation(s)
- Pedro Gonçalves
- Innate Immunity Unit, Institut Pasteur, Paris, France.,Institut National de la Santé et de la Recherche Médicale (INSERM) U1223, Paris, France
| | - João Ricardo Araújo
- Molecular Microbial Pathogenesis Unit, Institut Pasteur, Paris, France.,Institut National de la Santé et de la Recherche Médicale (INSERM) U1202, Paris, France
| | - James P Di Santo
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1223, Paris, France
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33
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Pardo-Camacho C, González-Castro AM, Rodiño-Janeiro BK, Pigrau M, Vicario M. Epithelial immunity: priming defensive responses in the intestinal mucosa. Am J Physiol Gastrointest Liver Physiol 2018; 314:G247-G255. [PMID: 29146676 DOI: 10.1152/ajpgi.00215.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
As the largest interface between the outside and internal milieu, the intestinal epithelium constitutes the first structural component facing potential luminal threats to homeostasis. This single-cell layer is the epicenter of a tightly regulated communication network between external and internal factors that converge to prime defensive responses aimed at limiting antigen penetration and the maintenance of intestinal barrier function. The defensive role developed by intestinal epithelial cells (IEC) relies largely on the variety of receptors they express at both extracellular (apical and basolateral) and intracellular compartments, and the capacity of IEC to communicate with immune and nervous systems. IEC recognize pathogen-associated molecules by innate receptors that promote the production of mucus, antimicrobial substances, and immune mediators. Epithelial cells are key to oral tolerance maintenance and also participate in adaptive immunity through the expression of immunoglobulin (Ig) receptors and by promoting local Ig class switch recombination. In IEC, different types of antigens can be sensed by multiple immune receptors that share signaling pathways to assure effective responses. Regulated defensive activity maintains intestinal homeostasis, whereas a breakdown in the control of epithelial immunity can increase the intestinal passage of luminal content and microbial invasion, leading to inflammation and tissue damage. In this review, we provide an updated overview of the type of immune receptors present in the human intestinal epithelium and the responses generated to promote effective barrier function and maintain mucosal homeostasis.
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Affiliation(s)
- Cristina Pardo-Camacho
- Laboratory of Translational Mucosal Immunology, Digestive Diseases Research Unit, Vall d'Hebron Institut de Recerca , Barcelona , Spain.,Department of Gastroenterology, Hospital Universitari Vall d'Hebron , Barcelona , Spain.,Facultat de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Ana M González-Castro
- Laboratory of Translational Mucosal Immunology, Digestive Diseases Research Unit, Vall d'Hebron Institut de Recerca , Barcelona , Spain.,Department of Gastroenterology, Hospital Universitari Vall d'Hebron , Barcelona , Spain.,Facultat de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Bruno K Rodiño-Janeiro
- Laboratory of Neuro-Immuno-Gastroenterology Group, Digestive Diseases Research Unit, Vall d'Hebron Institut de Recerca , Barcelona , Spain.,Department of Gastroenterology, Hospital Universitari Vall d'Hebron , Barcelona , Spain.,Facultat de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Marc Pigrau
- Laboratory of Neuro-Immuno-Gastroenterology Group, Digestive Diseases Research Unit, Vall d'Hebron Institut de Recerca , Barcelona , Spain.,Department of Gastroenterology, Hospital Universitari Vall d'Hebron , Barcelona , Spain.,Facultat de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - María Vicario
- Laboratory of Translational Mucosal Immunology, Digestive Diseases Research Unit, Vall d'Hebron Institut de Recerca , Barcelona , Spain.,Department of Gastroenterology, Hospital Universitari Vall d'Hebron , Barcelona , Spain.,Facultat de Medicina, Universitat Autònoma de Barcelona , Barcelona , Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas , Madrid , Spain
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34
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Kam NW, Liu D, Cai Z, Mak WY, Wong CK, Chiu KH, Wong KY, Tsang WL, Tam LS. Synoviocytes-derived Interleukin 35 Potentiates B Cell Response in Patients with Osteoarthritis and Rheumatoid Arthritis. J Rheumatol 2017; 45:563-573. [PMID: 29247146 DOI: 10.3899/jrheum.161363] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2017] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Elevated expression of interleukin 35 (IL-35) is associated with autoimmune disease, including rheumatoid arthritis (RA). The present study was undertaken to determine the functional interaction among IL-35, B cells, and stromal cells residing in the synovium of patients with RA and osteoarthritis (OA). METHODS IL-35 (EBI-3/p35) expression was investigated in RA and OA synovium using quantitative real-time PCR (qRT-PCR) and immunohistochemistry. IL-35 receptor (IL-35R) expression on B cells dissociated from synovium and periphery of patients with RA, OA, and healthy donor controls (HC) was determined by flow cytometry. The degree of B cells activation after IL-4 and/or IL-35 stimulation was measured by flow cytometry and qRT-PCR. Synovial fibroblasts (SF) purified from RA and OA synovium were cocultured with peripheral HC B cells in the presence/absence of tumor necrosis factor-α (TNF-α) and with/without anti-IL-35-blocking antibodies. RESULTS EBI-3/p35 transcripts were expressed in close proximity to B cells residing in RA and OA synovium. IL-35R subunits, gp130 and IL-27Rα, but not IL-12Rβ2, were expressed in B cells extracted from the synovium and periphery of patients with RA/OA. Notably, RA synovium expressed the highest level of IL-27Rα on their cell surface. IL-35 induced proliferation and IgG production in HC B cells. Cocultures of HC B cells with RASF, but not OASF, exhibited significantly elevated B cells activation. TNF-α-induced, RASF-dependent secretion of IgG in B cells is partly IL-35-dependent. CONCLUSION To our knowledge, for the first time we demonstrated that synovial/peripheral B cells expressed IL-35R and were responsive to IL-35 stimulation. SF residing in RA synovium can be linked to B cell activation and maintenance in RA synovium through IL-35.
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Affiliation(s)
- Ngar-Woon Kam
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Dehua Liu
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Zhe Cai
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Wah-Yan Mak
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Chun-Kwok Wong
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Kwok-Hing Chiu
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Kam-Yiu Wong
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Wai-Leuk Tsang
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China.,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Lai-Shan Tam
- From the Department of Medicine and Therapeutics, and Department of Chemical Pathology, and Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Department of Orthopaedics and Traumatology, Prince of Wales Hospital; Department of Orthopaedics and Traumatology, Princess Margaret Hospital; Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, China. .,N.W. Kam, PhD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; D. Liu, MPhil, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong; Z. Cai, PhD, Department of Chemical Pathology, The Chinese University of Hong Kong; W.Y. Mak, BSc, Department of Medicine and Therapeutics, The Chinese University of Hong Kong; C.K. Wong, PhD, Institute of Chinese Medicine and State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, and Department of Chemical Pathology, The Chinese University of Hong Kong; K.H. Chiu, FRCS, Department of Orthopaedics and Traumatology, Prince of Wales Hospital; K.Y. Wong, FRCS, Department of Orthopaedics and Traumatology, Princess Margaret Hospital; W.L. Tsang, FRCS, Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital; L.S. Tam, MD, Department of Medicine and Therapeutics, The Chinese University of Hong Kong.
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35
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Huang CH, Chang YH, Lin CY, Wang WH, Kuan HC, Hsieh YJ, Wang YW, Yang CH, Chiu JY, Tsai SF, Chen YH, Liu HH. Shared IgG Infection Signatures vs. Hemorrhage-Restricted IgA Clusters in Human Dengue: A Phenotype of Differential Class-Switch via TGFβ1. Front Immunol 2017; 8:1726. [PMID: 29255469 PMCID: PMC5723002 DOI: 10.3389/fimmu.2017.01726] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 11/22/2017] [Indexed: 01/08/2023] Open
Abstract
Phenotypic manifestations of infectious diseases are closely related to individual immune responses. Methods to extract information from patients' own immune reactions would be of great use for both diagnosis and treatment. Dengue fever is one of the diseases that clinical aggravations could occur paradoxically after humoral immunity appears. This property makes dengue fever an excellent disease model to explore. A principal component analyses (PCAs)-based framework derived from a prior vaccination study was developed. The framework was verified by successful demonstrations of known IgG signatures from a Mexico Dengue data set. Afterward the pipeline was tested upon de novo IgG and IgA libraries of Dengue patients from southern Taiwan. We discovered four infection signatures within IgG repertoires, two of which were identical to previous reports. However, it was IgA but not IgG that could differentiate hemorrhagic from non-hemorrhagic patients. IgA repertoires were found more diversified among bleeders, from whom seven signature clusters were characterized. The expressions of transforming growth factor beta 1 (TGFβ1) and accordingly mediated class-switch activity of IgA were distinct only among the PCA-segregated bleeding group. In sum, intercontinental sharing of IgG signatures in dengue fever was demonstrated via a unified working flow. Differential regulation of IgA class-switch with associated diversity expansion plus existences of hemorrhage-restricted clusters were shown. The ability of the framework to find common IgG signatures would implicate applications to infections even from unknown pathogens. The clusters within IgA repertoires could offer perspectives to other IgA-related bleeding disorders such as Henoch-Schönlein purpura or IgA nephropathy. Substantiated grounds for IgA-specific effector function via TGFβ1-mediated class-switch would be a new factor to consider for infectious diseases.
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Affiliation(s)
- Chung-Hao Huang
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Hui Chang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - Chun-Yu Lin
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Hung Wang
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | | | | | | | - Chung-Hsiang Yang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Taiwan
| | | | - Shih-Feng Tsai
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - Yen-Hsu Chen
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, HsinChu, Taiwan
| | - Hong-Hsing Liu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Taiwan.,Pediatrics, En Chu Kong Hospital, Sanxia, Taiwan
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36
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Furuya Y, Kirimanjeswara GS, Roberts S, Racine R, Wilson-Welder J, Sanfilippo AM, Salmon SL, Metzger DW. Defective anti-polysaccharide IgG vaccine responses in IgA deficient mice. Vaccine 2017; 35:4997-5005. [PMID: 28774562 DOI: 10.1016/j.vaccine.2017.07.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 07/17/2017] [Accepted: 07/21/2017] [Indexed: 01/06/2023]
Abstract
We report that IgA-/- mice exhibit specific defects in IgG antibody responses to various polysaccharide vaccines (Francisella tularensis LPS and Pneumovax), but not protein vaccines such as Fluzone. This defect further included responses to polysaccharide-protein conjugate vaccines (Prevnar and Haemophilus influenzae type b-tetanus toxoid vaccine). In agreement with these findings, IgA-/- mice were protected from pathogen challenge with protein- but not polysaccharide-based vaccines. Interestingly, after immunization with live bacteria, IgA+/+ and IgA-/- mice were both resistant to lethal challenge and their IgG anti-polysaccharide antibody responses were comparable. Immunization with live bacteria, but not purified polysaccharide, induced production of serum B cell-activating factor (BAFF), a cytokine important for IgG class switching; supplementing IgA-/- cell cultures with BAFF enhanced in vitro polyclonal IgG production. Taken together, these findings show that IgA deficiency impairs IgG class switching following vaccination with polysaccharide antigens and that live bacterial immunization can overcome this defect. Since IgA deficient patients also often show defects in antibody responses following immunization with polysaccharide vaccines, our findings could have relevance to the clinical management of this population.
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Affiliation(s)
- Yoichi Furuya
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Girish S Kirimanjeswara
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Sean Roberts
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Rachael Racine
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Jennifer Wilson-Welder
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Alan M Sanfilippo
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Sharon L Salmon
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA
| | - Dennis W Metzger
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208, USA.
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37
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Critical role of TSLP-responsive mucosal dendritic cells in the induction of nasal antigen-specific IgA response. Mucosal Immunol 2017; 10:901-911. [PMID: 27924821 DOI: 10.1038/mi.2016.103] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 10/09/2016] [Indexed: 02/04/2023]
Abstract
Thymic stromal lymphopoietin (TSLP) is an interleukin-7 (IL-7)-like cytokine involved in T helper 2 type immune responses. The primary target of TSLP is myeloid dendritic cells (DCs), however, little is known about the mechanism by which TSLP elicits respiratory IgA immune responses upon mucosal immunization. Here, we found that the levels of TSLP and TSLPR were upregulated in the mucosal DCs of mice nasally immunized with pneumococcal surface protein A (PspA) plus cholera toxin (CT) compared with those immunized with PspA alone. PspA-specific IgA responses, but not IgG Ab responses were significantly reduced in both serum and mucosal secretions of TSLPR knockout mice compared with wild-type mice after nasal immunization with PspA plus CT. Furthermore, CD11c+ mucosal DCs isolated from TSLPR knockout mice nasally immunized with PspA plus CT were less activated and exhibited markedly reduced expression of IgA-enhancing cytokines (e.g., APRIL, BAFF, and IL-6) compared with those from equivalently immunized wild-type mice. Finally, exogenous TSLP promoted production of IgAs in an in vitro DC-B cell co-culture system as exhibited by enhanced IL-6 production. These results suggest that TSLP-TSLPR signaling is pivotal in the induction of nasal respiratory immunity against pathogenic pneumococcal infection.
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38
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Faria AMC, Reis BS, Mucida D. Tissue adaptation: Implications for gut immunity and tolerance. J Exp Med 2017; 214:1211-1226. [PMID: 28432200 PMCID: PMC5413340 DOI: 10.1084/jem.20162014] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/31/2017] [Accepted: 04/04/2017] [Indexed: 12/22/2022] Open
Abstract
Faria et al. discuss the concept that immune cells undergo specialized adaptation to tissue-specific conditions and its potential implications for tolerance and immunity. Tissue adaptation is an intrinsic component of immune cell development, influencing both resistance to pathogens and tolerance. Chronically stimulated surfaces of the body, in particular the gut mucosa, are the major sites where immune cells traffic and reside. Their adaptation to these environments requires constant discrimination between natural stimulation coming from harmless microbiota and food, and pathogens that need to be cleared. This review will focus on the adaptation of lymphocytes to the gut mucosa, a highly specialized environment that can help us understand the plasticity of leukocytes arriving at various tissue sites and how tissue-related factors operate to shape immune cell fate and function.
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Affiliation(s)
- Ana M C Faria
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065 .,Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270901, Brazil
| | - Bernardo S Reis
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065
| | - Daniel Mucida
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065
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39
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Abstract
Thymic stromal lymphopoietin (TSLP) was identified more than 20 years ago as a secreted factor of a mouse thymic stromal cell line; later, a human orthologue was also identified. The signaling pathway triggered by TSLP has been extensively studied, and upregulation of the cytokine itself is linked to the pathogenesis of numerous Th2-related diseases, including atopic dermatitis, asthma, allergic responses, as well as certain types of cancers. On the other hand, TSLP mediates several immune homeostatic functions in both the gut and the thymus. Thus, a paradox occurs; why is TSLP homeostatic in certain tissues and a hallmark of exacerbated Th2 responses in the aforementioned pathologies? We and others have recently shown that in humans a novel isoform exists; this is a shorter isoform of TSLP whose expression is constitutive and controlled by a separate promoter. Short TSLP isoform mediates the homeostatic functions, whereas the long isoform is expressed at low/undetectable level at steady state and upregulated during inflammation in several tissues. Here we review the most recent data concerning the differential expression of the 2 isoforms and provide a potential explanation to the paradox. TSLP is regarded as a promising target for treatment of relevant pathologies, with a number of clinical trials already underway. It is important to design new strategies aimed at leaving intact the homeostatic effects of the short isoform while targeting the inflammatory effects of the long isoform.
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Key Words
- Atopic Diseases
- DC, dendritic cell
- Gut Homeostasis
- IFN, interferon
- IL, interleukin
- ILC, innate lymphoid cells
- MAPK, mitogen-activated protein kinase
- NF-κB, nuclear factor kappa B
- TLR, toll-like receptor
- TNF, tumor necrosis factor
- TSLP, thymic stromal lymphopoietin
- TSLPR, thymic stromal lymphopoietin protein receptor
- Therapeutic Targets
- Thymic Stromal Lymphopoietin
- Treg, regulatory T cells
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40
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An LGG-derived protein promotes IgA production through upregulation of APRIL expression in intestinal epithelial cells. Mucosal Immunol 2017; 10:373-384. [PMID: 27353252 PMCID: PMC5199635 DOI: 10.1038/mi.2016.57] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 05/22/2016] [Indexed: 02/07/2023]
Abstract
p40, a Lactobacillus rhamnosus GG (LGG)-derived protein, transactivates epidermal growth factor receptor (EGFR) in intestinal epithelial cells, leading to amelioration of intestinal injury and inflammation. To elucidate mechanisms by which p40 regulates mucosal immunity to prevent inflammation, this study aimed to determine the effects and mechanisms of p40 on regulation of a proliferation-inducing ligand (APRIL) expression in intestinal epithelial cells for promoting immunoglobulin A (IgA) production. p40 upregulated April gene expression and protein production in mouse small intestine epithelial (MSIE) cells, which were inhibited by blocking EGFR expression and kinase activity. Enteroids from Egfrfl/fl, but not Egfrfl/fl-Vil-Cre mice with EGFR specifically deleted in intestinal epithelial cells, exhibited increased April gene expression by p40 treatment. p40-conditioned media from MSIE cells increased B-cell class switching to IgA+ cells and IgA production, which was suppressed by APRIL receptor-neutralizing antibodies. Treatment of B cells with p40 did not show any effects on IgA production. p40 treatment increased April gene expression and protein production in small intestinal epithelial cells, fecal IgA levels, IgA+B220+, IgA+CD19+, and IgA+ plasma cells in lamina propria of Egfrfl/fl, but not of Egfrfl/fl-Vil-Cre, mice. Thus p40 upregulates EGFR-dependent APRIL production in intestinal epithelial cells, which may contribute to promoting IgA production.
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41
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Salvo Romero E, Alonso Cotoner C, Pardo Camacho C, Casado Bedmar M, Vicario M. The intestinal barrier function and its involvement in digestive disease. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2017; 107:686-96. [PMID: 26541659 DOI: 10.17235/reed.2015.3846/2015] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The gastrointestinal mucosal surface is lined with epithelial cells representing an effective barrier made up with intercellular junctions that separate the inner and the outer environments, and block the passage of potentially harmful substances. However, epithelial cells are also responsible for the absorption of nutrients and electrolytes, hence a semipermeable barrier is required that selectively allows a number of substances in while keeping others out. To this end, the intestine developed the "intestinal barrier function", a defensive system involving various elements, both intra- and extracellular, that work in a coordinated way to impede the passage of antigens, toxins, and microbial byproducts, and simultaneously preserves the correct development of the epithelial barrier, the immune system, and the acquisition of tolerance against dietary antigens and the intestinal microbiota. Disturbances in the mechanisms of the barrier function favor the development of exaggerated immune responses; while exact implications remain unknown, changes in intestinal barrier function have been associated with the development of inflammatory conditions in the gastrointestinal tract. This review details de various elements of the intestinal barrier function, and the key molecular and cellular changes described for gastrointestinal diseases associated with dysfunction in this defensive mechanism.
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Affiliation(s)
| | | | | | | | - María Vicario
- Gastroenteroogia, Vall d'Hebron Institut de REcerca, España
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42
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Yan F, Liu L, Cao H, Moore DJ, Washington MK, Wang B, Peek RM, Acra SA, Polk DB. Neonatal colonization of mice with LGG promotes intestinal development and decreases susceptibility to colitis in adulthood. Mucosal Immunol 2017; 10:117-127. [PMID: 27095077 PMCID: PMC5073052 DOI: 10.1038/mi.2016.43] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 03/19/2016] [Indexed: 02/04/2023]
Abstract
Development of the intestinal microbiota during early life serves as a key regulatory stage in establishing the host-microbial relationship. This symbiotic relationship contributes to developing host immunity and maintaining health throughout the life span. This study was to develop an approach to colonize conventionally raised mice with a model probiotic bacterium, Lactobacillus rhamnosus GG (LGG), and to determine the effects of LGG colonization on intestinal development and prevention of colitis in adulthood. LGG colonization in conventionally raised was established by administering LGG to pregnant mice starting at gestational day 18 and pups at postnatal days 1- 5. LGG colonization promoted bodyweight gain and increased diversity and richness of the colonic mucosa-associated microbiota before weaning. Intestinal epithelial cell proliferation, differentiation, tight junction formation, and mucosal IgA production were all significantly enhanced in LGG-colonized mice. Adult mice colonized with LGG showed increased IgA production and decreased susceptibility to intestinal injury and inflammation induced in the dextran sodium sulfate model of colitis. Thus, neonatal colonization of mice with LGG enhances intestinal functional maturation and IgA production and confers lifelong health consequences on protection from intestinal injury and inflammation. This strategy might be applied for benefiting health in the host.
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Affiliation(s)
- Fang Yan
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, TN 37232, USA,Correspondence: D. Brent Polk, M.D., Children’s Hospital Los Angeles, 4650 Sunset Boulevard MS#126, Los Angeles, CA 90027, Tel: 323.361.2278. Fax: 323.361.3719. . Fang Yan, M.D., Ph.D., Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, 2215 Garland Avenue, MRB IV, Room: 1035, Nashville, TN 37232-0696, USA, Tel: 615-343-5021; Fax: 615-343-5323;
| | - Liping Liu
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, P. R. China
| | - Daniel J. Moore
- Department of Pediatrics, Division of Endocrinology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - M. Kay Washington
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, P. R. China
| | - Richard M. Peek
- Departments of Medicine and Cancer Biology, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Sari A. Acra
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - D. Brent Polk
- Departments of Pediatrics and Biochemistry and Molecular Biology, University of Southern California and Saban Research Institute of Children’s Hospital Los Angeles, Los Angeles, CA 90027, USA,Correspondence: D. Brent Polk, M.D., Children’s Hospital Los Angeles, 4650 Sunset Boulevard MS#126, Los Angeles, CA 90027, Tel: 323.361.2278. Fax: 323.361.3719. . Fang Yan, M.D., Ph.D., Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, 2215 Garland Avenue, MRB IV, Room: 1035, Nashville, TN 37232-0696, USA, Tel: 615-343-5021; Fax: 615-343-5323;
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Huang B, Faucette AN, Pawlitz MD, Pei B, Goyert JW, Zhou JZ, El-Hage NG, Deng J, Lin J, Yao F, Dewar RS, Jassal JS, Sandberg ML, Dai J, Cols M, Shen C, Polin LA, Nichols RA, Jones TB, Bluth MH, Puder KS, Gonik B, Nayak NR, Puscheck E, Wei WZ, Cerutti A, Colonna M, Chen K. Interleukin-33-induced expression of PIBF1 by decidual B cells protects against preterm labor. Nat Med 2017; 23:128-135. [PMID: 27918564 PMCID: PMC5512431 DOI: 10.1038/nm.4244] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/03/2016] [Indexed: 12/12/2022]
Abstract
Preterm birth (PTB) is a leading cause of neonatal death worldwide. Intrauterine and systemic infection and inflammation cause 30-40% of spontaneous preterm labor (PTL), which precedes PTB. Although antibody production is a major immune defense mechanism against infection, and B cell dysfunction has been implicated in pregnancy complications associated with PTL, the functions of B cells in pregnancy are not well known. We found that choriodecidua of women undergoing spontaneous PTL harbored functionally altered B cell populations. B cell-deficient mice were markedly more susceptible than wild-type (WT) mice to PTL after inflammation, but B cells conferred interleukin (IL)-10-independent protection against PTL. B cell deficiency in mice resulted in a lower uterine level of active progesterone-induced blocking factor 1 (PIBF1), and therapeutic administration of PIBF1 mitigated PTL and uterine inflammation in B cell-deficient mice. B cells are a significant producer of PIBF1 in human choriodecidua and mouse uterus in late gestation. PIBF1 expression by B cells is induced by the mucosal alarmin IL-33 (ref. 9). Human PTL was associated with diminished expression of the α-chain of IL-33 receptor on choriodecidual B cells and a lower level of active PIBF1 in late gestation choriodecidua. These results define a vital regulatory cascade involving IL-33, decidual B cells and PIBF1 in safeguarding term pregnancy and suggest new therapeutic approaches based on IL-33 and PIBF1 to prevent human PTL.
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Affiliation(s)
- Bihui Huang
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Azure N Faucette
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Michael D Pawlitz
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Bo Pei
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Joshua W Goyert
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Jordan Zheng Zhou
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Nadim G El-Hage
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Jie Deng
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Jason Lin
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Fayi Yao
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Robert S Dewar
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Japnam S Jassal
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Maxwell L Sandberg
- Leadership in Medicine Program, Union College, Schenectady, New York, USA
| | - Jing Dai
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Montserrat Cols
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Cong Shen
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Lisa A Polin
- Department of Oncology, Wayne State University, Detroit, Michigan, USA
| | - Ronald A Nichols
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology-Med Ed, Beaumont Dearborn Hospital, Dearborn, Michigan, USA
| | - Theodore B Jones
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology-Med Ed, Beaumont Dearborn Hospital, Dearborn, Michigan, USA
| | - Martin H Bluth
- Department of Pathology, Wayne State University, Detroit, Michigan, USA
| | - Karoline S Puder
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Bernard Gonik
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Nihar R Nayak
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Elizabeth Puscheck
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
| | - Wei-Zen Wei
- Department of Oncology, Wayne State University, Detroit, Michigan, USA
| | - Andrea Cerutti
- Catalan Institute for Research and Advanced Studies, Barcelona Biomedical Research Park, Barcelona, Spain
- Program for Inflammatory and Cardiovascular Disorders, Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona, Spain
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Mucosal Immunology Studies Team, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Marco Colonna
- Mucosal Immunology Studies Team, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Kang Chen
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
- Department of Oncology, Wayne State University, Detroit, Michigan, USA
- Mucosal Immunology Studies Team, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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44
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Gohy ST, Hupin C, Pilette C, Ladjemi MZ. Chronic inflammatory airway diseases: the central role of the epithelium revisited. Clin Exp Allergy 2016; 46:529-42. [PMID: 27021118 DOI: 10.1111/cea.12712] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The respiratory epithelium plays a critical role for the maintenance of airway integrity and defense against inhaled particles. Physical barrier provided by apical junctions and mucociliary clearance clears inhaled pathogens, allergens or toxics, to prevent continuous stimulation of adaptive immune responses. The "chemical barrier", consisting of several anti-microbial factors such as lysozyme and lactoferrin, constitutes another protective mechanism of the mucosae against external aggressions before adaptive immune response starts. The reconstruction of damaged respiratory epithelium is crucial to restore this barrier. This review examines the role of the airway epithelium through recent advances in health and chronic inflammatory diseases in the lower conducting airways (in asthma and chronic obstructive pulmonary disease). Better understanding of normal and altered epithelial functions continuously provides new insights into the physiopathology of chronic airway diseases and should help to identify new epithelial-targeted therapies.
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Affiliation(s)
- S T Gohy
- Université catholique de Louvain (UCL), Institute of Experimental and Clinical Research, Pole of Pneumology, ENT and Dermatology, Brussels, Belgium.,Department of Pneumology, Cliniques universitaires St-Luc, Brussels, Belgium
| | - C Hupin
- Université catholique de Louvain (UCL), Institute of Experimental and Clinical Research, Pole of Pneumology, ENT and Dermatology, Brussels, Belgium
| | - C Pilette
- Université catholique de Louvain (UCL), Institute of Experimental and Clinical Research, Pole of Pneumology, ENT and Dermatology, Brussels, Belgium.,Department of Pneumology, Cliniques universitaires St-Luc, Brussels, Belgium.,Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Brussels, Belgium
| | - M Z Ladjemi
- Université catholique de Louvain (UCL), Institute of Experimental and Clinical Research, Pole of Pneumology, ENT and Dermatology, Brussels, Belgium.,Institute for Walloon Excellence in Lifesciences and Biotechnology (WELBIO), Brussels, Belgium
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45
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Aguirre Valadez JM, Rivera-Espinosa L, Méndez-Guerrero O, Chávez-Pacheco JL, García Juárez I, Torre A. Intestinal permeability in a patient with liver cirrhosis. Ther Clin Risk Manag 2016; 12:1729-1748. [PMID: 27920543 PMCID: PMC5125722 DOI: 10.2147/tcrm.s115902] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Liver cirrhosis is a worldwide public health problem, and patients with this disease are at high risk of developing complications, bacterial translocation from the intestinal lumen to the mesenteric nodes, and systemic circulation, resulting in the development of severe complications related to high mortality rate. The intestinal barrier is a structure with a physical and biochemical activity to maintain balance between the external environment, including bacteria and their products, and the internal environment. Patients with liver cirrhosis develop a series of alterations in different components of the intestinal barrier directly associated with the severity of liver disease that finally increased intestinal permeability. A "leaky gut" is an effect produced by damaged intestinal barrier; alterations in the function of tight junction proteins are related to bacterial translocation and their products. Instead, increasing serum proinflammatory cytokines and hemodynamics modification, which results in the appearance of complications of liver cirrhosis such as hepatic encephalopathy, variceal hemorrhage, bacterial spontaneous peritonitis, and hepatorenal syndrome. The intestinal microbiota plays a fundamental role in maintaining the proper function of the intestinal barrier; bacterial overgrowth and dysbiosis are two phenomena often present in people with liver cirrhosis favoring bacterial translocation. Increased intestinal permeability has an important role in the genesis of these complications, and treating it could be the base for prevention and partial treatment of these complications.
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Affiliation(s)
| | | | - Osvely Méndez-Guerrero
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición”Salvador Zubirán
| | | | - Ignacio García Juárez
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición”Salvador Zubirán
| | - Aldo Torre
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición”Salvador Zubirán
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46
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Asama T, Uematsu T, Kobayashi N, Tatefuji T, Hashimoto K. Oral administration of heat-killed Lactobacillus kunkeei YB38 improves murine influenza pneumonia by enhancing IgA production. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2016; 36:1-9. [PMID: 28243545 PMCID: PMC5301051 DOI: 10.12938/bmfh.16-010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 09/26/2016] [Indexed: 12/22/2022]
Abstract
Influenza is one of the important respiratory tract infections that require special attention for maintaining health and hygiene. The removal of influenza
virus (IFV) by secretory IgA produced by the respiratory epithelium has been reported to be a critical host defense mechanism. Therefore, we isolated
Lactobacillus kunkeei YB38 (YB38), the promoter of the salivary IgA secretion in humans, from honeybee pollen and studied the effect of
heat-killed YB38 treatment for preventing IFV infection in a mouse model. Female BALB/c mice received YB38 orally for 21 consecutive days and were then
inoculated nasally with IFV. The YB38-treated group with a daily dose of 100 mg/kg showed an increased survival rate after IFV infection relative to the
control. IgA secretion in the respiratory epithelium in the YB38-treated group (100 mg/kg) was significantly increased after 6 days of infection, while IL-6
production in the same respiratory site and the number of cells infiltrating into alveoli were significantly decreased. Moreover, lung tissue damage that
appeared after IFV infection was reduced. These results suggested that the YB38 dose induced early and local IgA secretion at the infection site, inhibited
persistent IFV infection, and prevented the infiltration of inflammatory immune cells or production of excessive IL-6, resulting in less damage to lung
tissues.
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Affiliation(s)
- Takashi Asama
- Institute for Bee Products and Health Science, Yamada Bee Company, Inc., 194 Ichiba, Kagamino-cho, Tomata-gun, Okayama 708-0393, Japan
| | - Takayuki Uematsu
- Biomedical Laboratory, Division of Biomedical Research, Kitasato University Medical Center, 6-100 Arai, Kitamoto, Saitama 364-8501, Japan
| | - Noritada Kobayashi
- Biomedical Laboratory, Division of Biomedical Research, Kitasato University Medical Center, 6-100 Arai, Kitamoto, Saitama 364-8501, Japan
| | - Tomoki Tatefuji
- Institute for Bee Products and Health Science, Yamada Bee Company, Inc., 194 Ichiba, Kagamino-cho, Tomata-gun, Okayama 708-0393, Japan
| | - Ken Hashimoto
- Institute for Bee Products and Health Science, Yamada Bee Company, Inc., 194 Ichiba, Kagamino-cho, Tomata-gun, Okayama 708-0393, Japan
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47
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Sugi Y, Takahashi K, Kurihara K, Nakata K, Narabayashi H, Hamamoto Y, Suzuki M, Tsuda M, Hanazawa S, Hosono A, Kaminogawa S. Post-Transcriptional Regulation of Toll-Interacting Protein in the Intestinal Epithelium. PLoS One 2016; 11:e0164858. [PMID: 27741296 PMCID: PMC5065231 DOI: 10.1371/journal.pone.0164858] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/03/2016] [Indexed: 02/06/2023] Open
Abstract
Immune responses against gut microbiota should be minimized to avoid unnecessary inflammation at mucosal surface. In this study, we analyzed the expression patterns of Toll-interacting protein (Tollip), an inhibitor of TLRs and IL-1 family cytokine-related intracellular signaling, in intestinal epithelial cells (IECs). Comparable mRNA expression was observed in murine small and large IECs (S-IECs and L-IECs). However, Tollip protein was only detected in L-IECs, but not in S-IECs. Similar results were obtained in germ-free mice, indicating that L-IEC-specific TOLLIP expression does not depend on bacterial colonization. Next, to understand the mechanisms underlying the post-transcriptional repression of Tollip, 3´-UTR-mediated translational regulation was evaluated. The region +1876/+2398 was responsible for the repression of Tollip expression. This region included the target sequence of miR-31. The inhibition of miR-31 restored the 3´-UTR-meditaed translational repression. In addition, miR-31 expression was significantly higher in S-IECs than in L-IECs, suggesting that miR-31 represses the translation of Tollip mRNA in S-IECs. Collectively, we conclude that the translation of Tollip is inhibited in S-IECs, at least in part, by miR-31 to yield L-IEC-specific high-level expression of the Tollip protein, which may contribute to the maintenance of intestinal homeostasis.
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Affiliation(s)
- Yutaka Sugi
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Kyoko Takahashi
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
- Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
- * E-mail:
| | - Kenta Kurihara
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Kazuaki Nakata
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
- Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Hikari Narabayashi
- Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Yuji Hamamoto
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Makoto Suzuki
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Masato Tsuda
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Shigemasa Hanazawa
- Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Akira Hosono
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Shuichi Kaminogawa
- Department of Food Biochemistry and Biotechnology, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
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48
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Thymic stromal lymphopoietin in tonsillar follicular dendritic cells correlates with elevated serum immunoglobulin A titer by promoting tonsillar immunoglobulin A class switching in immunoglobulin A nephropathy. Transl Res 2016; 176:1-17. [PMID: 27187742 DOI: 10.1016/j.trsl.2016.04.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 04/10/2016] [Accepted: 04/22/2016] [Indexed: 12/12/2022]
Abstract
Immunoglobulin A (IgA) nephropathy (IgAN) is characterized by high serum IgA levels and IgA deposition in the renal mesangium. Previous studies suggest that elevated serum IgA partly originates from the tonsils. Here, we investigated the mechanisms of IgA production in the tonsils of patients with IgAN. Immunohistochemistry revealed that the number and relative percentage of IgA-bearing cells were significantly increased in the tonsils of IgAN patients. Compared with non-IgAN patients, enhanced IgA class switching and overexpression of thymic stromal lymphopoietin (TSLP), TSLP receptor (TSLPR), activation-induced cytidine deaminase (AID), transforming growth factor-β1 (TGF-β1), B cell-activating factor of the tumor necrosis factor family (BAFF), and a proliferation-inducing ligand (APRIL) were detected in follicular dendritic cells (FDCs) of tonsillar germinal centers from IgAN patients. Importantly, TSLP correlated with IgA production in isolated FDC-associated clusters. Serum TSLP levels were increased and correlated with IgA overexpression in the tonsils and serum of IgAN patients. These data indicated that TSLP overexpression in tonsillar FDCs may promote IgA class switching in IgAN patients through the cooperative roles of AID, TGF-β1, BAFF, and APRIL. Therefore, interactions between TSLP in FDCs and IgA production in tonsils may be an important mechanism contributing to the pathogenesis of IgAN.
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49
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Park JH, Jeong DY, Peyrin-Biroulet L, Eisenhut M, Shin JI. Insight into the role of TSLP in inflammatory bowel diseases. Autoimmun Rev 2016; 16:55-63. [PMID: 27697608 DOI: 10.1016/j.autrev.2016.09.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 08/08/2016] [Indexed: 12/22/2022]
Abstract
Proinflammatory cytokines are thought to modulate pathogeneses of various inflammatory bowel diseases (IBDs). Thymic stromal lymphopoietin (TSLP), which has been studied in various allergic diseases such as asthma, atopic dermatitis (AD) and eosinophilic esophagitis (EoE), has been less considered to be involved in IBDs. However, mucosal dendritic cells (DCs) induced by various cytokines including TSLP were reported to cause polarization of T cell toward Th2 response, the differentiation of regulatory T-cell (Treg), and secretion of IgA by B cells. In this review, we discuss the concept that decreased TSLP has the potential to accelerate the development of Th1 response dominant diseases such as the Crohn's disease (CD) while increased TSLP has the potential to lead to a development of Th2 cell dominant diseases such the ulcerative colitis (UC). To examine TSLP's role as a potential determining factor for differentiating UC and CD, we analyzed the effects of other genes regulated by TSLP in regards to the UC and CD pathogeneses using data from online open access resources such as NetPath, GeneMania, and the String database. Our findings indicate that TSLP is a key mediator in the pathogenesis of IBDs and that further studies are needed to evaluate its role.
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Affiliation(s)
| | | | - Laurent Peyrin-Biroulet
- Inserm U954 and Department of Gastroenterology, Nancy University Hospital, Université de Lorraine, France
| | - Michael Eisenhut
- Luton & Dunstable University Hospital NHS Foundation Trust, Luton, United Kingdom
| | - Jae Il Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.
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50
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Majewski P, Majchrzak-Gorecka M, Grygier B, Skrzeczynska-Moncznik J, Osiecka O, Cichy J. Inhibitors of Serine Proteases in Regulating the Production and Function of Neutrophil Extracellular Traps. Front Immunol 2016; 7:261. [PMID: 27446090 PMCID: PMC4928128 DOI: 10.3389/fimmu.2016.00261] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 06/21/2016] [Indexed: 01/06/2023] Open
Abstract
Neutrophil extracellular traps (NETs), DNA webs released into the extracellular environment by activated neutrophils, are thought to play a key role in the entrapment and eradication of microbes. However, NETs are highly cytotoxic and a likely source of autoantigens, suggesting that NET release is tightly regulated. NET formation involves the activity of neutrophil elastase (NE), which cleaves histones, leading to chromatin decondensation. We and others have recently demonstrated that inhibitors of NE, such as secretory leukocyte protease inhibitor (SLPI) and SerpinB1, restrict NET production in vitro and in vivo. SLPI was also identified as a NET component in the lesional skin of patients suffering from the autoinflammatory skin disease psoriasis. SLPI-competent NET-like structures (a mixture of SLPI with neutrophil DNA and NE) stimulated the synthesis of interferon type I (IFNI) in plasmacytoid dendritic cells (pDCs) in vitro. pDCs uniquely respond to viral or microbial DNA/RNA but also to nucleic acids of “self” origin with the production of IFNI. Although IFNIs are critical in activating the antiviral/antimicrobial functions of many cells, IFNIs also play a role in inducing autoimmunity. Thus, NETs decorated by SLPI may regulate skin immunity through enhancing IFNI production in pDCs. Here, we review key aspects of how SLPI and SerpinB1 can control NET production and immunogenic function.
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Affiliation(s)
- Pawel Majewski
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
| | - Monika Majchrzak-Gorecka
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
| | - Beata Grygier
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
| | - Joanna Skrzeczynska-Moncznik
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
| | - Oktawia Osiecka
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
| | - Joanna Cichy
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Krakow , Poland
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