1
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Wu S, Yin Y, Du L. The bidirectional relationship of depression and disturbances in B cell homeostasis: Double trouble. Prog Neuropsychopharmacol Biol Psychiatry 2024; 132:110993. [PMID: 38490433 DOI: 10.1016/j.pnpbp.2024.110993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Major depressive disorder (MDD) is a recurrent, persistent, and debilitating neuropsychiatric syndrome with an increasing morbidity and mortality, representing the leading cause of disability worldwide. The dysregulation of immune systems (including innate and adaptive immune systems) has been identified as one of the key contributing factors in the progression of MDD. As the main force of the humoral immunity, B cells have an essential role in the defense against infections, antitumor immunity and autoimmune diseases. Several recent studies have suggested an intriguing connection between disturbances in B cell homeostasis and the pathogenesis of MDD, however, the B-cell-dependent mechanism of MDD remains largely unexplored compared to other immune cells. In this review, we provide an overview of how B cell abnormality regulates the progression of MMD and the potential consequence of the disruption of B cell homeostasis in patients with MDD. Abnormalities of B-cell homeostasis not only promote susceptibility to MDD, but also lead to an increased risk of developing infection, malignancy and autoimmune diseases in patients with MDD. A better understanding of the contribution of B cells underlying MDD would provide opportunities for identification of more targeted treatment approaches and might provide an overall therapeutic benefit to improve the long-term outcomes of patients with MDD.
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Affiliation(s)
- Shusheng Wu
- Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu, China
| | - Yuye Yin
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Longfei Du
- Department of Laboratory Medicine, Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu, China.
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2
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Arron HE, Marsh BD, Kell DB, Khan MA, Jaeger BR, Pretorius E. Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: the biology of a neglected disease. Front Immunol 2024; 15:1386607. [PMID: 38887284 PMCID: PMC11180809 DOI: 10.3389/fimmu.2024.1386607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 04/11/2024] [Indexed: 06/20/2024] Open
Abstract
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a chronic, debilitating disease characterised by a wide range of symptoms that severely impact all aspects of life. Despite its significant prevalence, ME/CFS remains one of the most understudied and misunderstood conditions in modern medicine. ME/CFS lacks standardised diagnostic criteria owing to variations in both inclusion and exclusion criteria across different diagnostic guidelines, and furthermore, there are currently no effective treatments available. Moving beyond the traditional fragmented perspectives that have limited our understanding and management of the disease, our analysis of current information on ME/CFS represents a significant paradigm shift by synthesising the disease's multifactorial origins into a cohesive model. We discuss how ME/CFS emerges from an intricate web of genetic vulnerabilities and environmental triggers, notably viral infections, leading to a complex series of pathological responses including immune dysregulation, chronic inflammation, gut dysbiosis, and metabolic disturbances. This comprehensive model not only advances our understanding of ME/CFS's pathophysiology but also opens new avenues for research and potential therapeutic strategies. By integrating these disparate elements, our work emphasises the necessity of a holistic approach to diagnosing, researching, and treating ME/CFS, urging the scientific community to reconsider the disease's complexity and the multifaceted approach required for its study and management.
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Affiliation(s)
- Hayley E. Arron
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Benjamin D. Marsh
- MRCPCH Consultant Paediatric Neurodisability, Exeter, Devon, United Kingdom
| | - Douglas B. Kell
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, United Kingdom
- The Novo Nordisk Foundation Centre for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - M. Asad Khan
- Directorate of Respiratory Medicine, Manchester University Hospitals, Wythenshawe Hospital, Manchester, United Kingdom
| | - Beate R. Jaeger
- Long COVID department, Clinic St Georg, Bad Aibling, Germany
| | - Etheresia Pretorius
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, United Kingdom
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3
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Reau NS, Lammert CS, Weinberg EM. Autoimmune hepatitis: Current and future therapies. Hepatol Commun 2024; 8:e0458. [PMID: 38836863 PMCID: PMC11155538 DOI: 10.1097/hc9.0000000000000458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/09/2024] [Indexed: 06/06/2024] Open
Abstract
Autoimmune hepatitis (AIH) is a chronic inflammatory liver disease that can lead to cirrhosis and liver failure. AIH can present in all ages, races, and ethnicities, but it predominantly affects women. As a heterogeneous disease, AIH presents variably in different patients, making diagnosis and treatment a challenge. Currently, the standard treatment for AIH comprises immunosuppressants; however, their long-term use is associated with adverse effects. The pathogenesis of AIH is complex, involving T cells, macrophages, and plasma cells that invade the periportal parenchyma and lead to an inflammatory cascade that can result in liver damage. Due to the complexity of AIH pathogenesis, treatment targets several inflammatory pathways. However, unlike other autoimmune diseases in which targeted treatments have been approved, there has been little progress made in advancing the treatment paradigm for AIH. Major obstacles to progress include challenges in conducting clinical trials, particularly patient recruitment and ensuring a diverse range of backgrounds; poorly defined outcomes to assess treatment response and improved quality of life; and a lack of study designs that account for the stage of disease and variations in treatment. A focus on individualized and steroid-free treatment approaches is needed to improve AIH prognosis and minimize steroid-associated adverse effects.
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Affiliation(s)
- Nancy S. Reau
- Section of Hepatology, Hepatology Services, Rush University Medical Center, Chicago, Illinois, USA
| | - Craig S. Lammert
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Ethan M. Weinberg
- Division of Gastroenterology & Hepatology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
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4
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Mitul MT, Kastenschmidt JM, Sureshchandra S, Wagoner ZW, Sorn AM, Mcllwain DR, Hernandez-Davies JE, Jain A, de Assis R, Trask D, Davies DH, Wagar LE. Tissue-specific sex differences in pediatric and adult immune cell composition and function. Front Immunol 2024; 15:1373537. [PMID: 38812520 PMCID: PMC11133680 DOI: 10.3389/fimmu.2024.1373537] [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: 01/19/2024] [Accepted: 04/26/2024] [Indexed: 05/31/2024] Open
Abstract
Sex-based differences in immune cell composition and function can contribute to distinct adaptive immune responses. Prior work has quantified these differences in peripheral blood, but little is known about sex differences within human lymphoid tissues. Here, we characterized the composition and phenotypes of adaptive immune cells from male and female ex vivo tonsils and evaluated their responses to influenza antigens using an immune organoid approach. In a pediatric cohort, female tonsils had more memory B cells compared to male tonsils direct ex vivo and after stimulation with live-attenuated but not inactivated vaccine, produced higher influenza-specific antibody responses. Sex biases were also observed in adult tonsils but were different from those measured in children. Analysis of peripheral blood immune cells from in vivo vaccinated adults also showed higher frequencies of tissue homing CD4 T cells in female participants. Together, our data demonstrate that distinct memory B and T cell profiles are present in male vs. female lymphoid tissues and peripheral blood respectively and suggest that these differences may in part explain sex biases in response to vaccines and viruses.
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Affiliation(s)
- Mahina Tabassum Mitul
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Jenna M. Kastenschmidt
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Suhas Sureshchandra
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Zachary W. Wagoner
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Andrew M. Sorn
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - David R. Mcllwain
- Department of Microbiology and Immunology, Reno School of Medicine, University of Nevada, Reno, NV, United States
| | - Jenny E. Hernandez-Davies
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Aarti Jain
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Rafael de Assis
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Douglas Trask
- Department of Otolaryngology-Head and Neck Surgery, University of California, Irvine, CA, United States
| | - D. Huw Davies
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
| | - Lisa E. Wagar
- Department of Physiology & Biophysics, University of California, Irvine, Irvine, CA, United States
- Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Center for Virus Research, University of California, Irvine, Irvine, CA, United States
- Vaccine Research and Development Center, University of California, Irvine, Irvine, CA, United States
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5
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Liao J, Yu X, Huang Z, He Q, Yang J, Zhang Y, Chen J, Song W, Luo J, Tao Q. Chemokines and lymphocyte homing in Sjögren's syndrome. Front Immunol 2024; 15:1345381. [PMID: 38736890 PMCID: PMC11082322 DOI: 10.3389/fimmu.2024.1345381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 04/15/2024] [Indexed: 05/14/2024] Open
Abstract
Sjögren's syndrome (SS) is a chronic systemic autoimmune disease that typically presents with lymphocyte, dendritic cell, and macrophage infiltration of exocrine gland ducts and the formation of ectopic germinal centers. The interactions of lymphocyte homing receptors and addressins and chemokines and their receptors, such as α4β7/MAdCAM-1, LFA-1/ICAM-1, CXCL13/CXCR5, CCL25/CCR9, CX3CL1/CX3CR1, play important roles in the migration of inflammatory cells to the focal glands and the promotion of ectopic germinal center formation in SS. A variety of molecules have been shown to be involved in lymphocyte homing, including tumor necrosis factor-α, interferon (IFN)-α, IFN-β, and B cell activating factor. This process mainly involves the Janus kinase-signal transducer and activator of transcription signaling pathway, lymphotoxin-β receptor pathway, and nuclear factor-κB signaling pathway. These findings have led to the development of antibodies to cell adhesion molecules, antagonists of chemokines and their receptors, compounds interfering with chemokine receptor signaling, and gene therapies targeting chemokines and their receptors, providing new targets for the treatment of SS in humans. The aim of this study was to explore the relationship between lymphocyte homing and the pathogenesis of SS, and to provide a review of recent studies addressing lymphocyte homing in targeted therapy for SS.
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Affiliation(s)
- Jiahe Liao
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Xinbo Yu
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Ziwei Huang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Qian He
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Jianying Yang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Yan Zhang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Jiaqi Chen
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
| | - Weijiang Song
- Traditional Chinese Medicine Department, Peking University Third Hospital, Beijing, China
| | - Jing Luo
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
- Beijing Key Laboratory of Immune Inflammatory Disease, China-Japan Friendship Hospital, Beijing, China
| | - Qingwen Tao
- Traditional Chinese Medicine Department of Rheumatism, China-Japan Friendship Hospital, Beijing, China
- Beijing Key Laboratory of Immune Inflammatory Disease, China-Japan Friendship Hospital, Beijing, China
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6
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Mathur M, Chan TM, Oh KH, Kooienga L, Zhuo M, Pinto CS, Chacko B. A PRoliferation-Inducing Ligand (APRIL) in the Pathogenesis of Immunoglobulin A Nephropathy: A Review of the Evidence. J Clin Med 2023; 12:6927. [PMID: 37959392 PMCID: PMC10650434 DOI: 10.3390/jcm12216927] [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: 10/18/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
A PRoliferation-Inducing Ligand (APRIL), the thirteenth member of the tumor necrosis factor superfamily, plays a key role in the regulation of activated B cells, the survival of long-lived plasma cells, and immunoglobulin (Ig) isotype class switching. Several lines of evidence have implicated APRIL in the pathogenesis of IgA nephropathy (IgAN). Globally, IgAN is the most common primary glomerulonephritis, and it can progress to end-stage kidney disease; yet, disease-modifying treatments for this condition have historically been lacking. The preliminary data in ongoing clinical trials indicate that APRIL inhibition can reduce proteinuria and slow the rate of kidney disease progression by acting at an upstream level in IgAN pathogenesis. In this review, we examine what is known about the physiologic roles of APRIL and evaluate the experimental and epidemiological evidence describing how these normal biologic processes are thought to be subverted in IgAN. The weight of the preclinical, clinical, and genetic data supporting a key role for APRIL in IgAN has galvanized pharmacologic research, and several anti-APRIL drug candidates have now entered clinical development for IgAN. Herein, we present an overview of the clinical results to date. Finally, we explore where more research and evidence are needed to transform potential therapies into clinical benefits for patients with IgAN.
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Affiliation(s)
| | - Tak Mao Chan
- Department of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China;
| | - Kook-Hwan Oh
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea;
| | - Laura Kooienga
- Colorado Kidney and Vascular Care, Denver, CO 80012, USA;
| | - Min Zhuo
- Visterra, Inc., Waltham, MA 02451, USA;
- Division of Renal Medicine, Department of Medicine Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Cibele S. Pinto
- Otsuka Pharmaceutical Development & Commercialization, Princeton, NJ 08540, USA;
| | - Bobby Chacko
- Nephrology and Transplantation Unit, John Hunter Hospital, Newcastle, NSW 2305, Australia;
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW 2308, Australia
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Mousavi MJ, Alizadeh A, Ghotloo S. Interference of B lymphocyte tolerance by prolactin in rheumatic autoimmune diseases. Heliyon 2023; 9:e16977. [PMID: 37332964 PMCID: PMC10276217 DOI: 10.1016/j.heliyon.2023.e16977] [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: 08/12/2022] [Revised: 05/05/2023] [Accepted: 06/02/2023] [Indexed: 06/20/2023] Open
Abstract
Systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and systemic sclerosis (SSc) are the most common rheumatic autoimmune diseases/disorders (RADs) that affect autologous connective tissues as a result of the breakdown of the self-tolerance mechanisms of the immune system. Prolactin, a glycoprotein hormone, has been known for its crucial role in the pathogenesis of these rheumatic autoimmune diseases. In addition to regulating lymphocyte proliferation and antibody synthesis, prolactin is also responsible for regulating cytokine production. Moreover, it contributes to the breakdown of central and peripheral tolerance mechanisms of B lymphocytes. Given the crucial role of prolactin in the pathogenesis of the mentioned RADs, prolactin may contribute to their pathogenesis by the breakdown of tolerance. In the present study, the key role of prolactin to the breakdown of B lymphocyte tolerance and its possible implication for the pathogenesis of these diseases is discussed. Current literature supports prolactin's role in the breakdown of B lymphocyte central and peripheral tolerance mechanisms, such apoptosis, receptor editing, and also anergy. Therefore, prolactin may contribute to the pathogenesis of RADs by the breakdown of B lymphocyte tolerance. However, more investigations, particularly in RA and SSc animal models, are required to precisely address the pathologic role of prolactin.
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Affiliation(s)
- Mohammad Javad Mousavi
- Student Research and Technology Committee, Bushehr University of Medical Sciences, Bushehr, Iran
- Department of Hematology, School of Para-Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Ardalan Alizadeh
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Somayeh Ghotloo
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran
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8
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Rossi M, Anerillas C, Idda ML, Munk R, Shin CH, Donega S, Tsitsipatis D, Herman AB, Martindale JL, Yang X, Piao Y, Mazan-Mamczarz K, Fan J, Ferrucci L, Johnson PF, De S, Abdelmohsen K, Gorospe M. Pleiotropic effects of BAFF on the senescence-associated secretome and growth arrest. eLife 2023; 12:e84238. [PMID: 37083495 PMCID: PMC10121226 DOI: 10.7554/elife.84238] [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] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 03/26/2023] [Indexed: 04/22/2023] Open
Abstract
Senescent cells release a variety of cytokines, proteases, and growth factors collectively known as the senescence-associated secretory phenotype (SASP). Sustained SASP contributes to a pattern of chronic inflammation associated with aging and implicated in many age-related diseases. Here, we investigated the expression and function of the immunomodulatory cytokine BAFF (B-cell activating factor; encoded by the TNFSF13B gene), a SASP protein, in multiple senescence models. We first characterized BAFF production across different senescence paradigms, including senescent human diploid fibroblasts (WI-38, IMR-90) and monocytic leukemia cells (THP-1), and tissues of mice induced to undergo senescence. We then identified IRF1 (interferon regulatory factor 1) as a transcription factor required for promoting TNFSF13B mRNA transcription in senescence. We discovered that suppressing BAFF production decreased the senescent phenotype of both fibroblasts and monocyte-like cells, reducing IL6 secretion and SA-β-Gal staining. Importantly, however, the influence of BAFF on the senescence program was cell type-specific: in monocytes, BAFF promoted the early activation of NF-κB and general SASP secretion, while in fibroblasts, BAFF contributed to the production and function of TP53 (p53). We propose that BAFF is elevated across senescence models and is a potential target for senotherapy.
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Affiliation(s)
- Martina Rossi
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Carlos Anerillas
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Maria Laura Idda
- Institute for Genetic and Biomedical Research (IRGB), National Research CouncilSassaryItaly
| | - Rachel Munk
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Chang Hoon Shin
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Stefano Donega
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
- Translational Gerontology Branch, NIA IRP, NIHBaltimoreUnited States
| | - Dimitrios Tsitsipatis
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Allison B Herman
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Jennifer L Martindale
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Xiaoling Yang
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Krystyna Mazan-Mamczarz
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Jinshui Fan
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Luigi Ferrucci
- Translational Gerontology Branch, NIA IRP, NIHBaltimoreUnited States
| | - Peter F Johnson
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute IRPFrederickUnited States
| | - Supriyo De
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Kotb Abdelmohsen
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of HealthBaltimoreUnited States
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9
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Xu JL. Wilms Tumor 1-Associated Protein Expression Is Linked to a T-Cell-Inflamed Phenotype in Pancreatic Cancer. Dig Dis Sci 2023; 68:831-840. [PMID: 35859262 DOI: 10.1007/s10620-022-07620-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 07/06/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND The molecular driving forces of anti-tumor immunity in pancreatic ductal adenocarcinoma (PDAC) remain unclear, which causing great difficulty in identifying an appropriate treatment strategy. AIMS This study aims to explore the associations between expression of Wilms tumor 1-associated protein (WTAP) and effector T-cell infiltration in PDAC. METHODS In this study, we explored the association between WTAP expression and infiltration level of CD8+ T cells in PDAC. 178 PDAC samples were selected from The Cancer Genome Atlas (TCGA) database. The associations between diverse immune-cell infiltration, Tumor Mutation Burden (TMB), immune checkpoints, and WTAP expression were performed via R software. Transcriptional hallmarks of anti-tumor immunity and known T-cell-inflamed signature of PDAC were both selected to explore the relevance to WTAP expression. Potential immune checkpoint blockade (ICB) response to different WTAP expression was predicted with tumor immune dysfunction and exclusion (TIDE) algorithm. RESULTS WTAP was closely linked to CD8+ T-cell infiltration (r ≥ 0.5, P value < 0.05) and did not show notable association with TMB in PDAC. WTAP positively linked to T-cell-inflamed gene expression profiles (GEP) (IL2RB, IL2RA, ZAP70, ITK, CD3E, CD38, CD27, CD276, CD8A, CMKLR1, CXCR6, HLA-DQA1, HLA-DRB1, HLA-E, NKG7, and STAT1), cytolytic activity (GZMA and PRF1), various immune checkpoints (IDO1, CD274, HAVCR2, PDCD1, CTLA4, LAG3, and PDCD1LG2) and 4-chemokine signature (CCL4, CCL5, CXCL9, and CXCL10). Besides, increased expression of WTAP was related to a higher TIDE score. CONCLUSIONS WTAP marks PDAC tumors with an active anti-tumor phenotype and might help the identification of PDAC patients who might benefit from immunotherapies.
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Affiliation(s)
- Ji-Li Xu
- The First Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, Zhejiang, China.
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10
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Amendt T, Tybulewicz VLJ. Antidepressants cheer up hepatic B1 B cells: Hope for the treatment of autoimmune liver diseases? Front Immunol 2023; 13:1083173. [PMID: 36733387 PMCID: PMC9887017 DOI: 10.3389/fimmu.2022.1083173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/16/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Timm Amendt
- Institute of Immunology, Ulm University, Ulm, Germany,*Correspondence: Timm Amendt,
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11
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Cousin VN, Perez GF, Payne KJ, Voll RE, Rizzi M, Mueller CG, Warnatz K. Lymphoid stromal cells - potential implications for the pathogenesis of CVID. Front Immunol 2023; 14:1122905. [PMID: 36875120 PMCID: PMC9982092 DOI: 10.3389/fimmu.2023.1122905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/03/2023] [Indexed: 02/19/2023] Open
Abstract
Non-hematopoietic lymphoid stromal cells (LSC) maintain lymph node architecture and form niches allowing the migration, activation, and survival of immune cells. Depending on their localization in the lymph node, these cells display heterogeneous properties and secrete various factors supporting the different activities of the adaptive immune response. LSCs participate in the transport of antigen from the afferent lymph as well as in its delivery into the T and B cell zones and organize cell migration via niche-specific chemokines. While marginal reticular cells (MRC) are equipped for initial B-cell priming and T zone reticular cells (TRC) provide the matrix for T cell-dendritic cell interactions within the paracortex, germinal centers (GC) only form when both T- and B cells successfully interact at the T-B border and migrate within the B-cell follicle containing the follicular dendritic cell (FDC) network. Unlike most other LSCs, FDCs are capable of presenting antigen via complement receptors to B cells, which then differentiate within this niche and in proximity to T follicular helper (TFH) cells into memory and plasma cells. LSCs are also implicated in maintenance of peripheral immune tolerance. In mice, TRCs induce the alternative induction of regulatory T cells instead of TFH cells by presenting tissue-restricted self-antigens to naïve CD4 T cells via MHC-II expression. This review explores potential implications of our current knowledge of LSC populations regarding the pathogenesis of humoral immunodeficiency and autoimmunity in patients with autoimmune disorders or common variable immunodeficiency (CVID), the most common form of primary immunodeficiency in humans.
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Affiliation(s)
- Victoria N Cousin
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,University of Freiburg, Faculty of Biology, Freiburg, Germany.,Freiburg Spemann Graduate School of Biology and Medicine (SGBM), Albert Ludwigs University Freiburg, Faculty of Biology, Freiburg, Germany
| | - Guillermo F Perez
- Immunologie, Immunopathologie et Chimie Thérapeutique, CNRS UPR3572, Strasbourg, France.,Faculty of Life Science, University of Strasbourg, Strasbourg, France
| | - Kathryn J Payne
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,University of Freiburg, Faculty of Biology, Freiburg, Germany
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Marta Rizzi
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Division of Clinical and Experimental Immunology, Institute of Immunology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Christopher G Mueller
- Immunologie, Immunopathologie et Chimie Thérapeutique, CNRS UPR3572, Strasbourg, France.,Faculty of Life Science, University of Strasbourg, Strasbourg, France
| | - Klaus Warnatz
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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12
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Yao Y, Zhu J, Qin S, Zhou Z, Zeng Q, Long R, Mao Z, Dong X, Zhao R, Zhang R, Zhang S, Huang S, Chen L. Resveratrol induces autophagy impeding BAFF-stimulated B-cell proliferation and survival by inhibiting the Akt/mTOR pathway. Biochem Pharmacol 2022; 202:115139. [PMID: 35697119 PMCID: PMC9283307 DOI: 10.1016/j.bcp.2022.115139] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 11/02/2022]
Abstract
Therapeutically targeting B cells has received great attention in the treatment of B-cell malignancies and autoimmune diseases. The B-cell activating factor (BAFF) is critical to the survival of normal and neoplastic B cells, and excess production of BAFF contributes to autoimmune diseases. Resveratrol, a natural polyphenolic compound, has a positive effect on the treatment of autoimmune diseases. However, how resveratrol affects BAFF-stimulated B-cell proliferation and survival is poorly understood. Here, we show that resveratrol increased autophagosome formation and ATG5/LC3-II levels and decreased p62 level, promoting autophagic flux/autophagy and thereby suppressing the basal or human soluble BAFF (hsBAFF)-stimulated proliferation and survival of normal and B-lymphoid (Raji) cells. This is supported by the findings that inhibition of autophagy with 3-methyladenine (3-MA, an inhibitor of Vps34) or ATG5 shRNA attenuates resveratrol-induced autophagy and -reduced proliferation/viability in B-cells. Inhibition of mTOR with rapamycin or knockdown of mTOR potentiated resveratrol-induced autophagy and inhibition of hsBAFF-stimulated B-cell proliferation/viability, while overexpression of wild-type mTOR conferred resistance to the actions of resveratrol. Similarly, inhibition of Akt with Akt inhibitor X or ectopic expression of dominant negative Akt reinforced resveratrol-induced autophagy and inhibition of hsBAFF-stimulated B-cell proliferation/viability, whereas expression of constitutively active Akt conferred resistance to the actions of resveratrol. Taken together, these results indicate that resveratrol induces autophagy impeding BAFF-stimulated proliferation and survival via blocking the Akt/mTOR signaling pathway in normal and neoplastic B cells. Our findings highlight that resveratrol has a great potential for prevention and treatment of excessive BAFF-elicited aggressive B-cell disorders and autoimmune diseases.
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Affiliation(s)
- Yajie Yao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Jiawei Zhu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Shanshan Qin
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Zhihan Zhou
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Qingyu Zeng
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Ruyu Long
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Zun Mao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Xiaoqing Dong
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Rui Zhao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Ruijie Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Shuangquan Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Shreveport, LA 71130-3932, USA; Department of Hematology and Oncology, Shreveport, LA 71130-3932, USA; Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3932, USA.
| | - Long Chen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China.
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13
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Marro J, Chetwynd AJ, Wright RD, Dliso S, Oni L. Urinary Protein Array Analysis to Identify Key Inflammatory Markers in Children with IgA Vasculitis Nephritis. CHILDREN 2022; 9:children9050622. [PMID: 35626799 PMCID: PMC9139281 DOI: 10.3390/children9050622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 11/16/2022]
Abstract
Chronic kidney disease is a recognised complication of immunoglobulin A vasculitis, (IgAV; formerly Henoch–Schonlein purpura—HSP). The pathophysiology of IgAV and why some patients develop significant renal involvement remains largely unknown. Identifying urinary inflammatory markers could direct targets for earlier intervention. The aim of this cross-sectional exploratory study was to perform a large protein array analysis to identify urinary markers to provide insight into the mechanisms of kidney inflammation in children with established IgAV nephritis (IgAVN). Determination of the relative levels of 124 key proteins was performed using commercially available proteome profiler array kits. Twelve children were recruited: IgAVN, n = 4; IgAV without nephritis (IgAVwoN), n = 4; healthy controls (HCs), n = 4. The urinary concentrations of twenty proteins were significantly different in IgAVN compared to IgAVwoN. The largest fold changes were reported for B-cell activating factor (BAFF), Cripto-1, sex-hormone-binding globulin and angiotensinogen. The urinary levels of complement components C5/C5a and factor D were also significantly elevated in patients with IgAVN. A total of 69 urinary proteins significantly raised levels in comparisons made between IgAVN vs. HCs and nine proteins in IgAVwoN vs. HCs, respectively. This study identified key urinary proteins potentially involved in IgAVN providing new insight into the pathophysiology. Further longitudinal studies with larger cohorts are needed to quantitatively analyse these biomarkers.
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Affiliation(s)
- Julien Marro
- Department of Women’s and Children’s Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L12 2AP, UK; (J.M.); (A.J.C.); (R.D.W.)
| | - Andrew J. Chetwynd
- Department of Women’s and Children’s Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L12 2AP, UK; (J.M.); (A.J.C.); (R.D.W.)
| | - Rachael D. Wright
- Department of Women’s and Children’s Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L12 2AP, UK; (J.M.); (A.J.C.); (R.D.W.)
| | - Silothabo Dliso
- NIHR Alder Hey Clinical Research Facility, Clinical Research Division, Alder Hey Children’s NHS Foundation Trust, Liverpool L14 5AB, UK;
| | - Louise Oni
- Department of Women’s and Children’s Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L12 2AP, UK; (J.M.); (A.J.C.); (R.D.W.)
- Department of Paediatric Nephrology, Alder Hey Children’s NHS Foundation Trust Hospital, Liverpool L14 5AB, UK
- Correspondence: ; Tel.: +44-(0)151-252-5441
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14
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B-Cell Activating Factor Increases Related to Adiposity, Insulin Resistance, and Endothelial Dysfunction in Overweight and Obese Subjects. Life (Basel) 2022; 12:life12050634. [PMID: 35629302 PMCID: PMC9146198 DOI: 10.3390/life12050634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 02/07/2023] Open
Abstract
Obesity (OB) is a major healthcare problem that results from long-term energy imbalance. Adipokines and pro-inflammatory cytokines facilitate adipose tissue (AT) remodeling to safely store excess nutrients. B-cell activating factor (BAFF) is a newly described adipokine whose role in enhancing adipogenesis has been reported. The present study aimed to evaluate serum BAFF association with adiposity distribution, serum adipokines, pro-inflammatory cytokines, and metabolic and endothelial dysfunction markers. The study included 124 young Mexican adults with no diagnosed comorbidities, divided according to their BMI. Anthropometric measurements, blood counts, and serum molecules (i.e., glucose, lipid profile, insulin, leptin, pro- and anti-inflammatory cytokines, von Willebrand factor (vWF), and BAFF) were assessed. The analysis showed positive correlation between BAFF and increased fat mass in all anthropometric measurements (p < 0.0001). BAFF augmentation was related to systemic inflammatory environment (p < 0.05), and linked with insulin resistance status (p < 0.05). BAFF increment was also correlated with early endothelial damage markers such as vWF (p < 0.0001). Linear regression analysis showed a role for BAFF in predicting serum vWF concentrations (p < 0.01). In conclusion, our data show that BAFF is an adipokine dynamically related to OB progression, insulin resistance status, and systemic inflammatory environment, and is a predictor of soluble vWF augmentation, in young overweight and obese Mexican subjects.
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15
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Ho HE, Cunningham-Rundles C. Seeking Relevant Biomarkers in Common Variable Immunodeficiency. Front Immunol 2022; 13:857050. [PMID: 35359997 PMCID: PMC8962738 DOI: 10.3389/fimmu.2022.857050] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
Abstract
Common variable immunodeficiency (CVID) is the most common symptomatic form of primary immunodeficiency. More than 50% of patients in some series suffer from autoimmune or inflammatory complications (the "CVID+" phenotype), and these are not adequately addressed by current treatments. Despite major advancements in genetics, the pathogenesis of the CVID+ phenotype has remained unexplained for most patients, necessitating the need for relevant biomarkers in both the clinic and research settings. In the clinics, reduced isotype-switched memory B cells (≤ 0.55% of B cells) and reduced T cells (CD4) can be utilized to identify those with increased complication risks. Additionally, condition-specific markers have also been suggested for lymphoma (normal or elevated IgM) and progressive interstitial lung disease (increased BAFF, normal or elevated IgM). Additional biomarkers have provided insights into disease pathogenesis, demonstrating wider systemic inflammation (increased LBP, sCD14, and sCD25; expanded ILC3), mucosal defects (increased zonulin, I-FABP), and perhaps reduced anti-inflammatory capability (reduced HDL) in CVID. Most recently, efforts have revealed elevated circulating bioactive bacterial DNA levels - marking microbial translocation and potentially linking the causation of multiple inflammatory changes previously observed in CVID. The implementation of high throughput profiling techniques may accelerate the search of relevant biomarker profiles in CVID and lead to better clinical risk stratification, revealing disease insights, and identifying potential therapeutic targets.
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Affiliation(s)
- Hsi-en Ho
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Charlotte Cunningham-Rundles
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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16
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Shiraz AK, Panther EJ, Reilly CM. Altered Germinal-Center Metabolism in B Cells in Autoimmunity. Metabolites 2022; 12:metabo12010040. [PMID: 35050162 PMCID: PMC8780703 DOI: 10.3390/metabo12010040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 12/27/2022] Open
Abstract
B lymphocytes play an important role in the pathophysiology of many autoimmune disorders by producing autoantibodies, secreting cytokines, and presenting antigens. B cells undergo extreme physiological changes as they develop and differentiate. Aberrant function in tolerogenic checkpoints and the metabolic state of B cells might be the contributing factors to the dysfunctionality of autoimmune B cells. Understanding B-cell metabolism in autoimmunity is important as it can give rise to new treatments. Recent investigations have revealed that alterations in metabolism occur in the activation of B cells. Several reports have suggested that germinal center (GC) B cells of individuals with systemic lupus erythematosus (SLE) have altered metabolic function. GCs are unique microenvironments in which the delicate and complex process of B-cell affinity maturation occurs through somatic hypermutation (SHM) and class switching recombination (CSR) and where Bcl6 tightly regulates B-cell differentiation into memory B-cells or plasma cells. GC B cells rely heavily on glucose, fatty acids, and oxidative phosphorylation (OXPHOS) for their energy requirements. However, the complicated association between GC B cells and their metabolism is still not clearly understood. Here, we review several studies of B-cell metabolism, highlighting the significant transformations that occur in GC progression, and suggest possible approaches that may be investigated to more precisely target aberrant B-cell metabolism in SLE.
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Affiliation(s)
- Ashton K. Shiraz
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, 205 Duck Pond Drive, Blacksburg, VA 24061, USA;
- Correspondence: (A.K.S.); (C.M.R.); Tel.: +1-540-231-9365 (C.M.R.)
| | - Eric J. Panther
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, 205 Duck Pond Drive, Blacksburg, VA 24061, USA;
| | - Christopher M. Reilly
- Department of Biomedical Sciences & Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, 205 Duck Pond Drive, Blacksburg, VA 24061, USA;
- Via College of Osteopathic Medicine, Blacksburg, VA 24060, USA
- Correspondence: (A.K.S.); (C.M.R.); Tel.: +1-540-231-9365 (C.M.R.)
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17
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Cheng CW, Fang WF, Tang KT, Lin JD. Possible interplay between estrogen and the BAFF may modify thyroid activity in Graves' disease. Sci Rep 2021; 11:21350. [PMID: 34725405 PMCID: PMC8560878 DOI: 10.1038/s41598-021-00903-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/14/2021] [Indexed: 11/17/2022] Open
Abstract
A link between sex hormones and B-cell activating factor (BAFF), a crucial immunoregulator of autoimmune thyroid disease (AITD), may exist. The study aimed to elucidate the role of estrogen (E2) in regulating BAFF in Graves' disease (GD). In clinical samples, serum BAFF levels were higher in women than in men in both the GD and control groups. serum BAFF levels were associated with thyroid-stimulating hormone receptor antibody levels and thyroid function only in women and not in men. BAFF transcripts in peripheral blood mononuclear cells were higher in women with GD than those in the control group. Among GD patients with the AA genotype of rs2893321, women had higher BAFF transcripts and protein levels than men. In the progression of a spontaneous autoimmune thyroiditis (SAT) murine model, NOD.H-2h4, serum free thyroxine and BAFF levels were higher in female than in male mice. Moreover, exogenous E2 treatment increased serum BAFF levels in male SAT mice. Meanwhile, female SAT mice exhibited higher thyroid BAFF transcripts levels than either the E2-treated or untreated male SAT mouse groups. Our results showed that E2 might be implicated in modulating BAFF expression, and support a possible mechanism for the higher incidence of AITD in women.
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Affiliation(s)
- Chao-Wen Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Traditional Herb Medicine Research Center, Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, 11031, Taiwan
| | - Wen-Fang Fang
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, 11031, Taiwan
| | - Kam-Tsun Tang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, 112, Taiwan
| | - Jiunn-Diann Lin
- Division of Endocrinology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, 291 Jhongzheng Rd., Jhonghe District, New Taipei City, 23561, Taiwan.
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.
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18
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Neys SFH, Rip J, Hendriks RW, Corneth OBJ. Bruton's Tyrosine Kinase Inhibition as an Emerging Therapy in Systemic Autoimmune Disease. Drugs 2021; 81:1605-1626. [PMID: 34609725 PMCID: PMC8491186 DOI: 10.1007/s40265-021-01592-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2021] [Indexed: 12/14/2022]
Abstract
Systemic autoimmune disorders are complex heterogeneous chronic diseases involving many different immune cells. A significant proportion of patients respond poorly to therapy. In addition, the high burden of adverse effects caused by "classical" anti-rheumatic or immune modulatory drugs provides a need to develop more specific therapies that are better tolerated. Bruton's tyrosine kinase (BTK) is a crucial signaling protein that directly links B-cell receptor (BCR) signals to B-cell activation, proliferation, and survival. BTK is not only expressed in B cells but also in myeloid cells, and is involved in many different signaling pathways that drive autoimmunity. This makes BTK an interesting therapeutic target in the treatment of autoimmune diseases. The past decade has seen the emergence of first-line BTK small-molecule inhibitors with great efficacy in the treatment of B-cell malignancies, but with unfavorable safety profiles for use in autoimmunity due to off-target effects. The development of second-generation BTK inhibitors with superior BTK specificity has facilitated the investigation of their efficacy in clinical trials with autoimmune patients. In this review, we discuss the role of BTK in key signaling pathways involved in autoimmunity and provide an overview of the different inhibitors that are currently being investigated in clinical trials of systemic autoimmune diseases, including rheumatoid arthritis and systemic lupus erythematosus, as well as available results from completed trials.
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Affiliation(s)
- Stefan F H Neys
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Jasper Rip
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
| | - Odilia B J Corneth
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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19
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Chromatin Modifications in 22q11.2 Deletion Syndrome. J Clin Immunol 2021; 41:1853-1864. [PMID: 34435264 DOI: 10.1007/s10875-021-01123-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 08/11/2021] [Indexed: 12/31/2022]
Abstract
PURPOSE Chromosome 22q11.2 deletion syndrome is a common inborn error of immunity. The early consequences of thymic hypoplasia are low T cell numbers. Later in life, atopy, autoimmunity, inflammation, and evolving hypogammaglobulinemia can occur and the causes of these features are not understood. This study utilized an unbiased discovery approach to define alterations in histone modifications. Our goal was to identify durable chromatin changes that could influence cell behavior. METHODS CD4 T cells and CD19 B cells underwent ChIP-seq analysis using antibodies to H3K4me3, H3K27ac, and H4ac. RNA effects were defined in CD4 T cells by RNA-seq. Serum cytokines were examined by Luminex. RESULTS Histone marks of transcriptional activation at CD4 T cell promoters and enhancers were globally increased. The promoter activation signature had elements related to T cell activation and inflammation, concordant with effects seen in the transcriptome. B cells, in contrast, had a minimally altered epigenetic landscape in 22q11.2. Both cell types had an "edge" effect with markedly altered chromatin adjacent to the deletion. CONCLUSIONS People with 22q11.2 deletion have altered CD4 T cell chromatin and a transcriptome concordant with the changes in the epigenome. These effects support a disease model where qualitative changes to T cells occur in addition to quantitative defects that have been well characterized. This study offers unique insight into qualitative differences in the T cells in 22q11.2 deletion, an aspect that has received limited attention.
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20
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Romano A, Storti P, Marchica V, Scandura G, Notarfranchi L, Craviotto L, Di Raimondo F, Giuliani N. Mechanisms of Action of the New Antibodies in Use in Multiple Myeloma. Front Oncol 2021; 11:684561. [PMID: 34307150 PMCID: PMC8297441 DOI: 10.3389/fonc.2021.684561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/09/2021] [Indexed: 12/19/2022] Open
Abstract
Monoclonal antibodies (mAbs) directed against antigen-specific of multiple myeloma (MM) cells have Fc-dependent immune effector mechanisms, such as complement-dependent cytotoxicity (CDC), antibody-dependent cellular cytotoxicity (ADCC), and antibody-dependent cellular phagocytosis (ADCP), but the choice of the antigen is crucial for the development of effective immuno-therapy in MM. Recently new immunotherapeutic options in MM patients have been developed against different myeloma-related antigens as drug conjugate-antibody, bispecific T-cell engagers (BiTEs) and chimeric antigen receptor (CAR)-T cells. In this review, we will highlight the mechanism of action of immuno-therapy currently available in clinical practice to target CD38, SLAMF7, and BCMA, focusing on the biological role of the targets and on mechanisms of actions of the different immunotherapeutic approaches underlying their advantages and disadvantages with critical review of the literature data.
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Affiliation(s)
- Alessandra Romano
- Department of Surgery and Medical Specialties, University of Catania, Catania, Italy
| | - Paola Storti
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | | | - Grazia Scandura
- Department of Surgery and Medical Specialties, University of Catania, Catania, Italy
| | | | - Luisa Craviotto
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Francesco Di Raimondo
- Department of Surgery and Medical Specialties, University of Catania, Catania, Italy
- U.O.C. Ematologia, A.O.U. Policlinico–San Marco, Catania, Italy
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21
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Chan CC, Harley ITW, Pfluger PT, Trompette A, Stankiewicz TE, Allen JL, Moreno-Fernandez ME, Damen MSMA, Oates JR, Alarcon PC, Doll JR, Flick MJ, Flick LM, Sanchez-Gurmaches J, Mukherjee R, Karns R, Helmrath M, Inge TH, Weisberg SP, Pamp SJ, Relman DA, Seeley RJ, Tschöp MH, Karp CL, Divanovic S. A BAFF/APRIL axis regulates obesogenic diet-driven weight gain. Nat Commun 2021; 12:2911. [PMID: 34006859 PMCID: PMC8131685 DOI: 10.1038/s41467-021-23084-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 04/12/2021] [Indexed: 02/07/2023] Open
Abstract
The impact of immune mediators on weight homeostasis remains underdefined. Interrogation of resistance to diet-induced obesity in mice lacking a negative regulator of Toll-like receptor signaling serendipitously uncovered a role for B cell activating factor (BAFF). Here we show that overexpression of BAFF in multiple mouse models associates with protection from weight gain, approximating a log-linear dose response relation to BAFF concentrations. Gene expression analysis of BAFF-stimulated subcutaneous white adipocytes unveils upregulation of lipid metabolism pathways, with BAFF inducing white adipose tissue (WAT) lipolysis. Brown adipose tissue (BAT) from BAFF-overexpressing mice exhibits increased Ucp1 expression and BAFF promotes brown adipocyte respiration and in vivo energy expenditure. A proliferation-inducing ligand (APRIL), a BAFF homolog, similarly modulates WAT and BAT lipid handling. Genetic deletion of both BAFF and APRIL augments diet-induced obesity. Lastly, BAFF/APRIL effects are conserved in human adipocytes and higher BAFF/APRIL levels correlate with greater BMI decrease after bariatric surgery. Together, the BAFF/APRIL axis is a multifaceted immune regulator of weight gain and adipose tissue function.
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Affiliation(s)
- Calvin C Chan
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Medical Scientist Training Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Isaac T W Harley
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Medical Scientist Training Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Rheumatology, Department of Internal Medicine and Department of Immunology & Microbiology, The University of Colorado Denver, Aurora, CO, USA
| | - Paul T Pfluger
- Research Unit NeuroBiology of Diabetes, Helmholtz Center Munich, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Center Munich, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
| | - Aurelien Trompette
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- University of Lausanne, Service de Pneumologie, CHUV, CLED 02.206, Epalinges, Switzerland
| | - Traci E Stankiewicz
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jessica L Allen
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- , Charlotte, NC, USA
| | - Maria E Moreno-Fernandez
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michelle S M A Damen
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jarren R Oates
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Pablo C Alarcon
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Medical Scientist Training Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jessica R Doll
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Matthew J Flick
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Experimental Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Leah M Flick
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- , Chapel Hill, NC, USA
| | - Joan Sanchez-Gurmaches
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Rajib Mukherjee
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Rebekah Karns
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michael Helmrath
- Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Stem Cell & Organoid Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Thomas H Inge
- Department of Surgery, Children's Hospital Colorado, Aurora, CO, USA
| | | | - Sünje J Pamp
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - David A Relman
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Randy J Seeley
- Department of Surgery, Internal Medicine and Nutritional Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Matthias H Tschöp
- Institute for Diabetes and Obesity, Helmholtz Center Munich, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
| | - Christopher L Karp
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Medical Scientist Training Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Global Health Discovery & Translational Sciences, Bill & Melinda Gates Foundation, Seattle, WA, USA
| | - Senad Divanovic
- Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, OH, USA.
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Medical Scientist Training Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Immunology Graduate Program, The University of Cincinnati College of Medicine and Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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22
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Burenbatu, Wang Y, Wang S, Narisu, Wuritunashun, Gong C, Hashengaowa, Eerdunduleng, Sarula, Guihua, Bai H. iTRAQ-based quantitative proteomics analysis of immune thrombocytopenia patients before and after Qishunbaolier treatment. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e8993. [PMID: 33140498 PMCID: PMC7757159 DOI: 10.1002/rcm.8993] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 10/08/2023]
Abstract
RATIONALE Treatment of immune thrombocytopenia (ITP) usually involves long-term use of immunosuppressive corticosteroids and splenectomy. However, these treatments often have side effects in patients. The Mongolian medicine Qishunbaolier (QSBLE) has a high curative effect, reduces the chances of relapse, and has no obvious side effects. This study was designed to identify potential therapeutic targets of QSBLE for treating ITP. METHODS To reveal differences in protein expression between ITP patients (ITPs) before and after QSBLE treatment, comparative proteomics studies were performed using isobaric tags for relative and absolute quantification (iTRAQ). The analysis used nanospray liquid chromatography/tandem mass spectrometry (nano-LC/MS/MS) in positive ion electrospray ionization mode. Key proteins relevant to ITP were revealed by the Kyoto Encyclopedia of Genes and Genomes (KEGG) and other bioinformatics tools. Real-time polymerase chain reaction (RT-PCR) analysis was carried out for confirmation of differentially expressed proteins. RESULTS A total of 982 differentially expressed proteins were identified in ITPs compared with the controls. Compared with the pre-QSBLE treatment group, 61 differentially expressed proteins were identified in the post-QSBLE treatment group, with 48 proteins being significantly upregulated and 13 downregulated. Twenty-nine pathways were significantly enriched. Q6N030 and other proteins were the key players in the protein-pathway network. Twenty proteins that may play important roles in the treatment of ITP were further filtered. RT-PCR and Western blot analyses further confirmed that MIF, PGK1 and IGHM were upregulated in ITPs after QSBLE treatment, in accordance with the proteomics data. CONCLUSIONS It is believed that the identified proteins and the results of bioinformatics analysis will provide a potential therapeutic target site for QSBLE for ITP therapy and biomarkers.
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Affiliation(s)
- Burenbatu
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Yanbo Wang
- College of Life Sciences and Food SciencesInner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
- Inner Mongolia Engineering and Technical Research Center for Personalized MedicineInner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Shuanglian Wang
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Narisu
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Wuritunashun
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Cuiqin Gong
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Hashengaowa
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Eerdunduleng
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Sarula
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Guihua
- Affiliated Hospital of Inner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
| | - Haihua Bai
- College of Life Sciences and Food SciencesInner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
- Inner Mongolia Engineering and Technical Research Center for Personalized MedicineInner Mongolia University for NationalitiesTongliaoInner Mongolia028000China
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23
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Ludwig-Słomczyńska AH, Seweryn MT, Kapusta P, Pitera E, Mantaj U, Cyganek K, Gutaj P, Dobrucka Ł, Wender-Ożegowska E, Małecki MT, Wołkow PP. The transcriptome-wide association search for genes and genetic variants which associate with BMI and gestational weight gain in women with type 1 diabetes. Mol Med 2021; 27:6. [PMID: 33472578 PMCID: PMC7818927 DOI: 10.1186/s10020-020-00266-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/30/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Clinical data suggest that BMI and gestational weight gain (GWG) are strongly interconnected phenotypes; however, the genetic basis of the latter is rather unclear. Here we aim to find genes and genetic variants which influence BMI and/or GWG. METHODS We have genotyped 316 type 1 diabetics using Illumina Infinium Omni Express Exome-8 v1.4 arrays. The GIANT, ARIC and T2D-GENES summary statistics were used for TWAS (performed with PrediXcan) in adipose tissue. Next, the analysis of association of imputed expression with BMI in the general and diabetic cohorts (Analysis 1 and 2) or GWG (Analysis 3 and 4) was performed, followed by variant association analysis (1 Mb around identified loci) with the mentioned phenotypes. RESULTS In Analysis 1 we have found 175 BMI associated genes and 19 variants (p < 10-4) which influenced GWG, with the strongest association for rs11465293 in CCL24 (p = 3.18E-06). Analysis 2, with diabetes included in the model, led to discovery of 1812 BMI associated loci and 207 variants (p < 10-4) influencing GWG, with the strongest association for rs9690213 in PODXL (p = 9.86E-07). In Analysis 3, among 648 GWG associated loci, 2091 variants were associated with BMI (FDR < 0.05). In Analysis 4, 7 variants in GWG associated loci influenced BMI in the ARIC cohort. CONCLUSIONS Here, we have shown that loci influencing BMI might have an impact on GWG and GWG associated loci might influence BMI, both in the general and T1DM cohorts. The results suggest that both phenotypes are related to insulin signaling, glucose homeostasis, mitochondrial metabolism, ubiquitinoylation and inflammatory responses.
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Affiliation(s)
| | - Michał T Seweryn
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
- Department of Cancer Biology and Genetics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Przemysław Kapusta
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
| | - Ewelina Pitera
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland
| | - Urszula Mantaj
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Cyganek
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
- Department of Metabolic Diseases, Jagiellonian University Medical College, Kraków, Poland
| | - Paweł Gutaj
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Łucja Dobrucka
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
| | - Ewa Wender-Ożegowska
- Department of Reproduction, Poznan University of Medical Sciences, Poznan, Poland
| | - Maciej T Małecki
- Department of Metabolic Diseases, University Hospital Kraków, Kraków, Poland
- Department of Metabolic Diseases, Jagiellonian University Medical College, Kraków, Poland
| | - Paweł P Wołkow
- Center for Medical Genomics OMICRON, Jagiellonian University Medical College, Kraków, Poland.
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24
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Fan H, Lu B, Cao C, Li H, Yang D, Huang L, Ding T, Wu M, Lu G. Plasma TNFSF13B and TNFSF14 Function as Inflammatory Indicators of Severe Adenovirus Pneumonia in Pediatric Patients. Front Immunol 2021; 11:614781. [PMID: 33542721 PMCID: PMC7851050 DOI: 10.3389/fimmu.2020.614781] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/03/2020] [Indexed: 12/23/2022] Open
Abstract
Background Human adenoviruses (HAdV) infection caused pneumonia remains a major threat to global children health. Currently, diagnosis of severe HAdV pneumonia in children is hampered by the lack of specific biomarkers. Also, the severity of adenovirus pneumonia in pediatric patients is generally based on clinical features and existing biomarkers do not reliably correlate to clinical severity. Here, we asked whether local and systemic inflammatory mediators could act as biomarkers predicting severe HAdV pneumonia in children. Methods Totally 37 common inflammatory protein levels were determined by Luminex assay in plasma and bronchoalveolar lavage (BAL) from pediatric patients who were diagnosed with HAdV pneumonia, and their correlation with the disease severity and lung lesion were assessed using statistical and bioinformatic analysis. Results Among 37 inflammatory cytokines, the protein levels of 4 TNF superfamily (TNFSF) members and their receptors (TNF receptor superfamily, TNFRSF) [TNFSF13B, TNFSF14, sTNF-R1 and sTNF-R2] in the plasma and 7 TNFSF/TNFRSF members [TNFSF12, TNFSF13, TNFSF13B, TNFSF14, TNFRSF8, sTNF-R1, and sTNF-R2] in the BAL were enhanced in patients with HAdV pneumonia compared with control subjects with airway foreign body. Moreover, the protein levels of all the tested TNFSF/TNFRSF members (except TNFSF12) were elevated in the BAL of severe group compared with non-severe HAdV pneumonia patients, while only TNFSF13B and TNFSF14 were dramatically increased in the plasma of severe cases, and positively related to the plasma CRP levels. In addition, ROC analysis indicated that TNFSF13B and TNFSF14 displayed a great potential to predict severe HAdV pneumonia. Conclusion In pediatric HAdV pneumonia, TNFSF/TNFRSF members function as key molecules in local and systemic inflammatory network, and the plasma TNFSF13B and TNFSF14 may be the potential local and systemic inflammatory indicators of severe HAdV pneumonia in pediatric patients.
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Affiliation(s)
- Huifeng Fan
- Department of Respiration, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, China
| | - Bingtai Lu
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, China.,School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Can Cao
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Hui Li
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Diyuan Yang
- Department of Respiration, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, China
| | - Li Huang
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Tao Ding
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Minhao Wu
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Gen Lu
- Department of Respiration, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, China
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25
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Abstract
Pemphigus vulgaris (PV) is a severe chronic autoimmune blistering disease that affects the skin and mucous membranes. It is characterized by suprabasal acantholysis due to disruption of desmosomal connections between keratinocytes. Autoantibodies against desmosomal cadherins, desmoglein 3 and 1, have been shown to induce disease. Certain human leukocyte antigen (HLA) types and non-HLA foci confer genetic susceptibility. Until the discovery of corticosteroids in the 1950s, PV was 75% fatal. Since then, multiple PV treatments, such as systemic corticosteroids and adjunctive therapy with immunosuppressive medications (mycophenolate mofetil, azathioprine, cyclophosphamide, cyclosporine, methotrexate, gold, and others) have been introduced; however, none have led to long-term remissions and many have undesired adverse effects. Our growing understanding of the pathophysiologic mechanisms in PV is leading to development of new targeted therapies, such as intravenous immunoglobulin, anti-CD20 monoclonal antibodies, inhibitors of Bruton tyrosine kinase and neonatal Fc receptors, and adoptive cellular transfer, that may result in lasting control of this life-threatening disease.
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MESH Headings
- Agammaglobulinaemia Tyrosine Kinase/antagonists & inhibitors
- Agammaglobulinaemia Tyrosine Kinase/metabolism
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antigens, CD20/immunology
- Antigens, CD20/metabolism
- Autoantibodies/immunology
- Autoantibodies/metabolism
- Combined Modality Therapy/methods
- Drug Therapy, Combination/methods
- Genetic Predisposition to Disease
- HLA Antigens/genetics
- HLA Antigens/immunology
- Histocompatibility Antigens Class I/metabolism
- Humans
- Immunoglobulins, Intravenous/pharmacology
- Immunoglobulins, Intravenous/therapeutic use
- Immunosuppressive Agents/pharmacology
- Immunosuppressive Agents/therapeutic use
- Immunotherapy, Adoptive/methods
- Molecular Targeted Therapy/methods
- Pemphigus/genetics
- Pemphigus/immunology
- Pemphigus/therapy
- Plasmapheresis
- Receptors, Fc/antagonists & inhibitors
- Receptors, Fc/metabolism
- Remission Induction/methods
- Signal Transduction/drug effects
- Signal Transduction/immunology
- Treatment Outcome
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Affiliation(s)
- Emily M Altman
- Department of Dermatology, University of New Mexico, 1021 Medical Arts Avenue NE, Albuquerque, NM, 87102, USA.
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26
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Liang L, Huang Z, Li N, Wang D, Ding L, Shi H, Hong M. Effects of ammonia exposure on antioxidant function, immune response and NF-κB pathway in Chinese Strip-necked Turtle (Mauremys sinensis). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 229:105621. [PMID: 33129562 DOI: 10.1016/j.aquatox.2020.105621] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
As one of the main toxic substances in aquaculture water, ammonia causes seriously physiological harm to aquatic animals. In order to investigate the effects of ammonia exposure on the antioxidant defense, immune response, and NF-κB signaling pathway in Chinese Strip-necked Turtle (Mauremys sinensis), we designed two experimental groups (control and 6.45 mM ammonia), and sampled at 6 h, 24 h, 48 h, re 24 h (recover 24 h), and re 48 h. The results showed that the blood ammonia (BA) content was significantly increased when the turtles were subjected to ammonia, and the activities of cholinesterase (CHE) and aspartate aminotransferase (AST) in the serum also showed a significant upward trend. The malondialdehyde (MDA) content continuously increased during ammonia exposure, and more than doubled at 48 h compared with the control group. The activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), catalase (CAT) and their corresponding relative mRNA expression levels in the liver during ammonia exposure were obviously increased when compared to the control group, but most decreased to the normal levels at re 48 h. In addition, the relative mRNA and protein expression levels of NF-E2 related factor 2 (Nrf2) showed similar up-regulation patterns to antioxidase during ammonia exposed periods; whereas kelch-like ECH-binding protein 1 (Keap1), as Nrf2 negative regulator, showed opposite patterns. Moreover, the relative mRNA expression levels of heat shock proteins (HSP70, HSP90) significantly elevated upon the exposure of ammonia. Furthermore, ammonia increased the relative mRNA and protein expression levels of p50 and p65 at different exposed times. The reative mRNA expression levels of immune cytokines (BAFF and IL-6) were upregulated during ammonia exposured time, while there was a decline but did not return to normal levels, in the recovery periods. Taken together, these results indicated that antioxidation, immunity, and NF-κB signaling played a certain protective role for Mauremys sinensis under ammonia exposure. Our results will be helpful to understand the mechanism of aquatic toxicology induced by ammonia in turtles.
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Affiliation(s)
- Lingyue Liang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Zubin Huang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Na Li
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Dongmei Wang
- Tropical Biological Technology Research Institute, Chinese Academy of Tropical Agriculture Science, Haikou 571101, China
| | - Li Ding
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China.
| | - Haitao Shi
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Meiling Hong
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China.
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27
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Pathogenetic Mechanisms Implicated in Sjögren's Syndrome Lymphomagenesis: A Review of the Literature. J Clin Med 2020; 9:jcm9123794. [PMID: 33255258 PMCID: PMC7759999 DOI: 10.3390/jcm9123794] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/16/2020] [Accepted: 11/21/2020] [Indexed: 02/08/2023] Open
Abstract
Sjögren's Syndrome (SS) is a chronic autoimmune disorder characterized by focal mononuclear cell infiltrates that surround the ducts of the exocrine glands, impairing the function of their secretory units. Compared to other autoimmune disorders, SS is associated with a notably high incidence of non-Hodgkin lymphoma (NHL) and more frequently mucosa associated lymphoid tissue (MALT) lymphoma, leading to increased morbidity and mortality rates. High risk features of lymphoma development include systemic extraepithelial manifestations, low serum levels of complement component C4 and mixed type II cryoglobulinemia. The discrimination between reactive and neoplastic lymphoepithelial lesion (LEL) is challenging, probably reflecting a continuum in the evolution from purely inflammatory lymphoid infiltration to the clonal neoplastic evolution. Early lesions display a predominance of activated T cells, while B cells prevail in severe histologic lesions. This strong B cell infiltration is not only a morphologic phenomenon, but it is also progressively associated with the presence of ectopic germinal centers (GCs). Ectopic formation of GCs in SS represents a complex process regulated by an array of cytokines, adhesion molecules and chemokines. Chronic antigenic stimulation is the major driver of specific B cell proliferation and increases the frequency of their transformation in the ectopic GCs and marginal zone (MZ) equivalents. B cells expressing cell surface rheumatoid factor (RF) are frequently detected in the salivary glands, suggesting that clonal expansion might arise from antigen selection of RF-expressing B cells. Abnormal stimulation and incomplete control mechanisms within ectopic lymphoid structures predispose RF MZ like cells to lymphoma development. Immunoglobulin recombination, somatic mutation and isotype switching during B cell development are events that may increase the translocation of oncogenes to immunoglobulin loci or tumor suppressor gene inactivation, leading to monoclonal B cell proliferation and lymphoma development. Concerning chronic antigenic stimulation, conclusive data is so far lacking. However immune complexes containing DNA or RNA are the most likely candidates. Whether additional molecular oncogenic events contribute to the malignant overgrowth remains to be proved.
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28
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Im J, Baik JE, Lee D, Park OJ, Park DH, Yun CH, Han SH. Bacterial Lipoproteins Induce BAFF Production via TLR2/MyD88/JNK Signaling Pathways in Dendritic Cells. Front Immunol 2020; 11:564699. [PMID: 33123136 PMCID: PMC7566273 DOI: 10.3389/fimmu.2020.564699] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/17/2020] [Indexed: 11/13/2022] Open
Abstract
B-cell activating factor (BAFF) plays a crucial role in survival, differentiation, and antibody secretion of B cells. Microbial products with B-cell mitogenic properties can indirectly promote expansion and activation of B cells by stimulating accessory cells, such as dendritic cells (DCs), to induce BAFF. Although bacterial lipoproteins are potent B-cell mitogen like lipopolysaccharides (LPSs), it is uncertain whether they can stimulate DCs to induce BAFF expression. Here, we evaluated the effect of bacterial lipoproteins on BAFF expression in mouse bone marrow-derived DCs. Lipoprotein-deficient Staphylococcus aureus mutant induced relatively low expression level of membrane-bound BAFF (mBAFF) and the mRNA compared with its wild-type strain, implying that bacterial lipoproteins can positively regulate BAFF induction. The synthetic lipopeptides Pam2CSK4 and Pam3CSK4, which mimic bacterial lipoproteins, dose-dependently induced BAFF expression, and their BAFF-inducing capacities were comparable to those of LPS in DCs. Induction of BAFF by the lipopeptide was higher than the induction by other microbe-associated molecular patterns, including peptidoglycan, flagellin, zymosan, lipoteichoic acid, and poly(I:C). Pam3CSK4 induced both mBAFF and soluble BAFF expression in a dose- and time-dependent manner. BAFF expression by Pam3CSK4 was completely absent in DCs from TLR2- or MyD88-deficient mice. Among various MAP kinase inhibitors, only JNK inhibitors blocked Pam3CSK4-induced BAFF mRNA expression, while inhibitors blocking ERK or p38 kinase had no such effect. Furthermore, Pam3CSK4 increased the DNA-binding activities of NF-κB and Sp1, but not that of C/EBP. Pam3CSK4-induced BAFF promoter activity via TLR2/1 was blocked by NF-κB or Sp1 inhibitor. Collectively, these results suggest that bacterial lipoproteins induce expression of BAFF through TLR2/MyD88/JNK signaling pathways leading to NF-κB and Sp1 activation in DCs, and BAFF derived from bacterial lipoprotein-stimulated DCs induces B-cell proliferation.
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Affiliation(s)
- Jintaek Im
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Jung Eun Baik
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Dongwook Lee
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Ok-Jin Park
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Dong Hyun Park
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, South Korea
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Wang A, Rojas O, Lee D, Gommerman JL. Regulation of neuroinflammation by B cells and plasma cells. Immunol Rev 2020; 299:45-60. [PMID: 33107072 DOI: 10.1111/imr.12929] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 09/07/2020] [Indexed: 02/06/2023]
Abstract
The remarkable success of anti-CD20 B cell depletion therapies in reducing the burden of multiple sclerosis (MS) disease has prompted significant interest in how B cells contribute to neuroinflammation. Most focus has been on identifying pathogenic CD20+ B cells. However, an increasing number of studies have also identified regulatory functions of B lineage cells, particularly the production of IL-10, as being associated with disease remission in anti-CD20-treated MS patients. Moreover, IL-10-producing B cells have been linked to the attenuation of inflammation in experimental autoimmune encephalomyelitis (EAE), the animal model of MS. In addition to IL-10-producing B cells, antibody-producing plasma cells (PCs) have also been implicated in suppressing neuroinflammation. This review will examine regulatory roles for B cells and PCs in MS and EAE. In addition, we speculate on the involvement of regulatory PCs and the cytokine BAFF in the context of anti-CD20 treatment. Lastly, we explore how the microbiota could influence anti-inflammatory B cell behavior. A better understanding of the contributions of different B cell subsets to the regulation of neuroinflammation, and factors that impact the development, maintenance, and migration of such subsets, will be important for rationalizing next-generation B cell-directed therapies for the treatment of MS.
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Affiliation(s)
- Angela Wang
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Olga Rojas
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Dennis Lee
- Department of Immunology, University of Toronto, Toronto, ON, Canada
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Peng Y, Guo F, Liao S, Liao H, Xiao H, Yang L, Liu H, Pan Q. Altered frequency of peripheral B-cell subsets and their correlation with disease activity in patients with systemic lupus erythematosus: A comprehensive analysis. J Cell Mol Med 2020; 24:12044-12053. [PMID: 32918534 PMCID: PMC7579696 DOI: 10.1111/jcmm.15836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/12/2020] [Accepted: 08/17/2020] [Indexed: 02/05/2023] Open
Abstract
Alternations of peripheral B-cell subsets are closely related to disease activity in systemic lupus erythematosus (SLE) and may also predict the relapse of SLE. In this study, we aimed to comprehensively analyse the frequency of peripheral B-cell subsets, and their correlation with disease activity in patients with SLE. The results showed that for B-cell subsets in the antigen-independent differentiation stage, the frequency of the peripheral hematopoietic stem cell (HSC) subset in all patients with SLE was significantly higher than that of control patients. Surprisingly, several significant correlations were noted in newly diagnosed patients with SLE including a positive correlation in the frequency of the common lymphoid progenitor cell (CLP) with cholesterol serum levels. For B-cell subsets in the antigen-dependent differentiation stage, the frequency of naïve B-cell (N-B) subsets in all patients with SLE was significantly higher than that in the control patients. Moreover, the frequency of plasmablasts positively correlated with the SLEDAI score in the newly diagnosed patients. For memory B-cell (M-B) subtypes in the antigen-dependent differentiation stage, the frequency of the class-switched memory B-cell (CSM-B) subsets was positively correlated with the serum levels of complement C3. Notably, the frequency of the CSM-B subset also negatively correlated with the SLEDAI score, whereas the non-class-switched memory B-cell (NSM-B) subset was positively correlated with the serum levels of haemoglobin. Collectively, these findings may contribute to a better understanding of the role played by different B-cell subsets in the pathogenesis of SLE.
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Affiliation(s)
- Yanxia Peng
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
- Central Laboratory and Department of NeurologyShunde HospitalSouthern Medical University (The First People’s Hospital of Shunde Foshan)FoshanChina
| | - Fengbiao Guo
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
- Department of Histology and EmbryologyShantou University Medical CollegeShantouChina
| | - Shuzhen Liao
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
| | - Huanjin Liao
- Department of Laboratory MedicineShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Haiyan Xiao
- Department of Cellular Biology and AnatomyAugusta UniversityAugustaGAUSA
| | - Lawei Yang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
| | - Hua‐feng Liu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
| | - Qingjun Pan
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang CityInstitute of NephrologyAffiliated Hospital of Guangdong Medical UniversityZhanjiangChina
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Contributions of Major Cell Populations to Sjögren's Syndrome. J Clin Med 2020; 9:jcm9093057. [PMID: 32971904 PMCID: PMC7564211 DOI: 10.3390/jcm9093057] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022] Open
Abstract
Sjögren’s syndrome (SS) is a female dominated autoimmune disease characterized by lymphocytic infiltration into salivary and lacrimal glands and subsequent exocrine glandular dysfunction. SS also may exhibit a broad array of extraglandular manifestations including an elevated incidence of non-Hodgkin’s B cell lymphoma. The etiology of SS remains poorly understood, yet progress has been made in identifying progressive stages of disease using preclinical mouse models. The roles played by immune cell subtypes within these stages of disease are becoming increasingly well understood, though significant gaps in knowledge still remain. There is evidence for distinct involvement from both innate and adaptive immune cells, where cells of the innate immune system establish a proinflammatory environment characterized by a type I interferon (IFN) signature that facilitates propagation of the disease by further activating T and B cell subsets to generate autoantibodies and participate in glandular destruction. This review will discuss the evidence for participation in disease pathogenesis by various classes of immune cells and glandular epithelial cells based upon data from both preclinical mouse models and human patients. Further examination of the contributions of glandular and immune cell subtypes to SS will be necessary to identify additional therapeutic targets that may lead to better management of the disease.
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Wei YC, Wu CL, Weng WC. Cytokine changes during treatment of anti-Caspr2 encephalitis: a case report. BMC Neurol 2020; 20:299. [PMID: 32791989 PMCID: PMC7425608 DOI: 10.1186/s12883-020-01879-x] [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: 02/12/2020] [Accepted: 08/06/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Cytokines are effective molecules of immune reactions. They work in inflammatory sites as well as circulate in the blood. Cytokines in the cerebrospinal fluid have been suggested to be markers of autoimmune encephalitis and reflect disease progression. However, studies on blood cytokines in autoimmune encephalitis are scarce. We report a case presenting with serial changes in blood cytokine levels in a male patient with anti-contactin-associated protein 2 (Caspr2) encephalitis. CASE PRESENTATION A 61-year-old man without systemic disease presented with ataxia and speech disturbance 1 week. After admission, he further developed visual hallucinations, psychosis, and consciousness deterioration. Brain magnetic resonance imaging and infection and tumor surveillances were negative. 18F-fluorodeoxyglucose positron emission tomography of brain revealed frontal and occipital hypometabolism and anterior cingulate gyrus and mesial temporal hypermetabolism. Autoimmune studies confirmed Caspr2 antibodies in his blood. After receiving a diagnosis of anti-Caspr2 encephalitis, the patient received steroids, plasmapheresis, and zonisamide. He recovered well and was totally independent 6 months after disease onset. A cytokine profiler array kit was used to investigate neuroimmune mechanisms during the disease course. Several cytokines showed significant changes in plasma levels, such as B cell activating factor for B cell proliferation; thymus and activation-regulated chemokine for T cell chemoattraction; soluble CD40 ligand for Th2 cell mediation; C5/C5a for complement activation; brain-derived neurotrophic factor for neuronal survival response; and dipeptidyl peptidase 4, retinol binding protein, dickkopf-related protein, and epidermal growth factor for response to environmental provocation. The concentration of cytokines was verified using Luminex multiplexing assay. CONCLUSIONS Due to their easy accessibility, blood cytokines are potential biomarkers of autoimmune encephalitis. Based on the investigating platform of this single case study, future larger scale studies are warranted.
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Affiliation(s)
- Yi-Chia Wei
- Department of Neurology, Chang Gung Memorial Hospital, No. 222, Maijin Rd., Anle Dist, Keelung City, 204, Taiwan. .,Community Medicine Research Center, Chang Gung Memorial, Hospital, Keelung, Taiwan. .,Collage of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Chia-Lun Wu
- Department of Neurology, Chang Gung Memorial Hospital, No. 222, Maijin Rd., Anle Dist, Keelung City, 204, Taiwan.,Collage of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wei-Chieh Weng
- Department of Neurology, Chang Gung Memorial Hospital, No. 222, Maijin Rd., Anle Dist, Keelung City, 204, Taiwan.,Collage of Medicine, Chang Gung University, Taoyuan, Taiwan
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Thapa M, Tedesco D, Gumber S, Elrod EJ, Han JH, Kitchens WH, Magliocca JF, Adams AB, Grakoui A. Blockade of BAFF Reshapes the Hepatic B Cell Receptor Repertoire and Attenuates Autoantibody Production in Cholestatic Liver Disease. THE JOURNAL OF IMMUNOLOGY 2020; 204:3117-3128. [PMID: 32332110 DOI: 10.4049/jimmunol.1900391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/05/2020] [Indexed: 12/11/2022]
Abstract
Defects in biliary transport proteins, MDR3 in humans and Mdr2 in mice, can lead to a spectrum of cholestatic liver disorders. Although B cell disorders and the aberrant Ab production are the leading extrahepatic manifestations of cholestatic liver diseases, the mechanism underlying this phenomenon is incompletely understood. Using mice with deficiency of Mdr2 that progressively develop cholestatic liver disease, we investigated the contributions of BAFF to aberrant IgG autoantibody production and hepatic fibrosis. In Mdr2-/- mice, hepatic B lymphocytes constitutively produced IgG during fibrosis progression, which correlated with elevated serum levels of BAFF, antinuclear Abs (ANA) and immune complexes. The elevated BAFF and ANA titers were also detected in human patients with primary sclerosing cholangitis and hepatobiliary cholangiopathies. Consistent with the higher BAFF levels, liver-specific selection of the focused BCR IgH repertoire was found on hepatic B cells in Mdr2-/- mice. Interestingly, the administration of anti-BAFF mAb in Mdr2-/- mice altered the BCR repertoire on hepatic B lymphocytes and resulted in reduced ANA and immune complex titers. However, anti-BAFF treatment did not attenuate hepatic fibrosis as measured by collagen deposition, hepatic expressions of collagen-1a, α-smooth muscle actin, and mononuclear cell infiltration (CD11b+ Ly-6chi monocytes and CD11b+ Gr1+ neutrophils). Importantly, depletion of B cells by anti-CD20 mAb reduced both hepatic fibrosis and serum levels of ANA and immune complexes. Our findings implicate B cells as the potential therapeutic targets for hepatic fibrosis and targeting BAFF specifically for attenuating the autoantibody production associated with cholestatic liver disease.
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Affiliation(s)
- Manoj Thapa
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA 30329;
| | - Dana Tedesco
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA 30329
| | - Sanjeev Gumber
- Division of Pathology and Laboratory Medicine, Yerkes Research Primate Center, Emory University School of Medicine, Atlanta, GA 30329
| | - Elizabeth J Elrod
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA 30329
| | - Jin-Hwan Han
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA 30329
| | - William H Kitchens
- Division of Transplantation, Department of Surgery, Emory University School of Medicine, Atlanta, GA 30329; and
| | - Joseph F Magliocca
- Division of Transplantation, Department of Surgery, Emory University School of Medicine, Atlanta, GA 30329; and
| | - Andrew B Adams
- Division of Transplantation, Department of Surgery, Emory University School of Medicine, Atlanta, GA 30329; and
| | - Arash Grakoui
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA 30329; .,Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329
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Jellusova J. The role of metabolic checkpoint regulators in B cell survival and transformation. Immunol Rev 2020; 295:39-53. [PMID: 32185805 DOI: 10.1111/imr.12855] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/25/2020] [Accepted: 03/01/2020] [Indexed: 12/14/2022]
Abstract
In response to mitogenic stimulation, B cells activate different pro-anabolic signaling pathways such as c-Myc- and mTORC1-dependent networks to satisfy the energetic demands of biomass synthesis and proliferation. In order to preserve viability and function, cell growth cannot progress unchecked and must be adjusted according to the availability of nutrients. Nutrient-sensing proteins such as AMPK antagonize mTORC1 activity in response to starvation. If pro-anabolic signaling pathways are aberrantly activated, B cells may lack the metabolic capacity to accommodate their energetic needs, which can lead to cell death. On the other hand, metabolic hyperactivation is a salient feature of cancer cells, suggesting that mechanisms exist, which allow B cells to cope with metabolic stress. The aim of this review is to discuss how B cells respond to a mismatch between energy supply and demand and what the consequences are of metabolic dysregulation in normal and malignant B cells.
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Affiliation(s)
- Julia Jellusova
- Research Centres BIOSS and CIBSS, Albert-Ludwigs-University of Freiburg, Freiburg, Germany.,Department of Molecular Immunology, Institute of Biology III at the Faculty of Biology, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
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35
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Gao S, Chen J, Xie J, Wang J. The effects of BAFF on T lymphocytes in chronic obstructive pulmonary disease. Respir Res 2020; 21:66. [PMID: 32160903 PMCID: PMC7066828 DOI: 10.1186/s12931-020-01333-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 03/06/2020] [Indexed: 12/16/2022] Open
Abstract
Background It has been reported that B cell activating factor belonging to the tumor necrosis factor family (BAFF) expression is increased in chronic obstructive pulmonary disease (COPD). However its role in this chronic inflammatory disease is not fully understood. Previous studies have suggested that BAFF also affects T cell function. We therefore investigated the effects of BAFF on T lymphocytes in COPD. Methods BAFF was detected in the cells of sputum and the plasma. Peripheral blood mononuclear cells (PBMCs) were isolated from COPD patients and treated with BAFF or BAFF plus BR3-Fc (BAFF antagonist). The apoptosis of CD4+ cells and CD8+ cells was analyzed by flow cytometry. CD4+ cells and CD8+ cells were isolated from peripheral blood of COPD patients respectively and treated with BAFF or BAFF plus BR3-Fc. Interferon-γ (IFN-γ) and interleukin-4 (IL-4) were detected in the CD4+ cells, and perforin and granzyme B were detected in the CD8+ cells. Results BAFF expression was increased in the cells of sputum and the plasma from COPD patients compared with control subjects. The plasma BAFF levels were inversely correlated with FEV1 percentage of predicted in patients with COPD. BAFF did not significantly alter the apoptosis of CD4+ cells, however it significantly inhibited the apoptosis of CD8+ cells from COPD patients. BAFF increased IFN-γ expression in the CD4+ cells from COPD patients, while it did not significantly alter the expresson of IL-4 in these cells. BAFF increased the expression of perforin and granzyme B in the CD8+ cells from COPD patients. Conclusions Our findings indicate that BAFF may be involved in the inflammatory response in COPD via affecting T lymphocytes, suggesting a possible role of BAFF in the pathogenesis of COPD.
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Affiliation(s)
- Shupei Gao
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Road, Wuhan, 430030, China
| | - Jinqing Chen
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Road, Wuhan, 430030, China
| | - Jungang Xie
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Road, Wuhan, 430030, China
| | - Jianmiao Wang
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Road, Wuhan, 430030, China.
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Liu Y, Yuan X, Li L, Lin L, Zuo X, Cong Y, Li Y. Increased Ileal Immunoglobulin A Production and Immunoglobulin A-Coated Bacteria in Diarrhea-Predominant Irritable Bowel Syndrome. Clin Transl Gastroenterol 2020; 11:e00146. [PMID: 32352710 PMCID: PMC7145038 DOI: 10.14309/ctg.0000000000000146] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Immune activation and intestinal microbial dysbiosis could induce diarrhea-predominant irritable bowel syndrome (IBS-D). We examined the roles of ileal immunoglobulin A (IgA) and IgA-coated bacteria in IBS-D pathogenesis. METHODS Peripheral blood, fecal samples, and ileal and cecal biopsies were collected from 32 healthy volunteers and 44 patients with IBS-D. Quantitative reverse transcriptase polymerase chain reaction was used to assess differential gene expression. IgA levels in the blood and fecal samples were quantified by an enzyme-linked immunosorbent assay. IgA cells were assessed by immunofluorescence imaging. Flow-cytometry-based IgA bacterial cell sorting and 16S rRNA gene sequencing (IgA-SEQ) was used to isolate and identify fecal IgA bacteria. RESULTS Fecal IgA, particularly IgA1, was upregulated in patients with IBS-D. IgA class switch and B cell-activating factor-receptor were increased in the terminal ileum of patients. The intestinal microbiota composition was altered in patients compared with that in controls. IgA-SEQ showed that the proportion of fecal IgA-coated bacteria was increased significantly in patients with IBS-D. IgA bacteria in patients with IBS-D showed higher abundances of Escherichia-Shigella, Granulicatella, and Haemophilus compared with healthy controls and IgA bacteria in patients with IBS-D. The Escherichia-Shigella IgA coating index was positively correlated with anxiety and depression. The Escherichia-Shigella relative abundance, luminal IgA activity, and some altered IgA-coated bacteria were positively associated with the clinical manifestations of IBS-D. DISCUSSION Microbial dysbiosis may promote the terminal ileal mucosa to produce higher levels of IgA, increasing the proportion of IgA-coated bacteria by activating IgA class switching, which might regulate local inflammation and clinical manifestations in IBS-D. IgA may mediate the effects of microbial dysbiosis on the pathogenesis of IBS-D.
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Affiliation(s)
- Yi Liu
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Department of Gastroenterology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xunyi Yuan
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Lixiang Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Lin Lin
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiuli Zuo
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yingzi Cong
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Yanqing Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, Shandong, China
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Rapamycin inhibits B-cell activating factor (BAFF)-stimulated cell proliferation and survival by suppressing Ca 2+-CaMKII-dependent PTEN/Akt-Erk1/2 signaling pathway in normal and neoplastic B-lymphoid cells. Cell Calcium 2020; 87:102171. [PMID: 32062191 DOI: 10.1016/j.ceca.2020.102171] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/06/2020] [Accepted: 02/06/2020] [Indexed: 01/21/2023]
Abstract
B-cell activating factor (BAFF) is a crucial survival factor for B cells, and excess BAFF contributes to development of autoimmune diseases. Recent studies have shown that rapamycin can prevent BAFF-induced B-cell proliferation and survival, but the underlying mechanism remains to be elucidated. Here we found that rapamycin inhibited human soluble BAFF (hsBAFF)-stimulated cell proliferation by inducing G1-cell cycle arrest, which was through downregulating the protein levels of CDK2, CDK4, CDK6, cyclin A, cyclin D1, and cyclin E. Rapamycin reduced hsBAFF-stimulated cell survival by downregulating the levels of anti-apoptotic proteins (Mcl-1, Bcl-2, Bcl-xL and survivin) and meanwhile upregulating the levels of pro-apoptotic proteins (BAK and BAX). The cytostatic and cytotoxic effects of rapamycin linked to its attenuation of hsBAFF-elevated intracellular free Ca2+ ([Ca2+]i). In addition, rapamycin blocked hsBAFF-stimulated B-cell proliferation and survival by preventing hsBAFF from inactivating PTEN and activating the Akt-Erk1/2 pathway. Overexpression of wild type PTEN or ectopic expression of dominant negative Akt potentiated rapamycin's suppression of hsBAFF-induced Erk1/2 activation and proliferation/viability in Raji cells. Interestingly, PP242 (mTORC1/2 inhibitor) or Akt inhibitor X, like rapamycin (mTORC1 inhibitor), reduced the basal or hsBAFF-induced [Ca2+]i elevations. Chelating [Ca2+]i with BAPTA/AM, preventing [Ca2+]i elevation using EGTA, 2-APB or verapamil, inhibiting CaMKII with KN93, or silencing CaMKII strengthened rapamycin's inhibitory effects. The results indicate that rapamycin inhibits BAFF-stimulated B-cell proliferation and survival by blunting mTORC1/2-mediated [Ca2+]i elevations and suppressing Ca2+-CaMKII-dependent PTEN/Akt-Erk1/2 signaling pathway. Our finding underscores that rapamycin may be exploited for prevention of excessive BAFF-induced aggressive B-cell malignancies and autoimmune diseases.
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Ligands and receptors of the TNF superfamily are decreased in major depression and during early antidepressant therapy. J Psychiatr Res 2019; 119:116-121. [PMID: 31622870 DOI: 10.1016/j.jpsychires.2019.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 08/27/2019] [Accepted: 09/23/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND The up-regulation of pro-inflammatory agents, amongst them tumor necrosis factor (TNF), may represent low-grade inflammation in major depression. To further elucidate inflammatory mechanisms related to TNF in depression, the aim of the current study was to investigate the involvement of ligands and receptors of the TNF/TNF-receptor-superfamily yet un- or little explored in major depression. METHODS Serum levels of ligands (TNF, TNF-related weak inducer of apoptosis [TWEAK], B-cell activating factor [BAFF], tumor necrosis factor superfamily member 14 [TNFSF14; LIGHT], A proliferation-inducing ligand [APRIL]) and receptor molecules (TNF receptor superfamily member 8 [TNFRSF8; sCD30], soluble TNF receptor type 1 [sTNFR1] and type 2 [sTNFR2]) of the TNF/TNF-receptor-superfamily were measured in 50 unmedicated patients suffering from major depression and 48 healthy controls and were reassessed in 37 of the depressed patients two weeks after the initiation of antidepressive treatment. RESULTS In comparison to the healthy controls, the interrelated serum levels of TWEAK, BAFF, TNFSF8, sTNFR1 and sTNFR2 were reduced both in the unmedicated and medicated depressed patients. Serum levels of BAFF and TNF significantly increased during the initiation of antidepressive treatment. In the combined sample of unmedicated depressed and healthy controls, but not the separate groups, scores of the BDI-II inversely correlated with levels of TWEAK, BAFF, sTNFR1, sTNFR2 and TNFSF8. CONCLUSION The current findings give evidence for a role of the TNF/TNF-receptor-superfamily in the pathophysiology of major depression that may involve reduced tissue regeneration and neurogenesis rather than an acceleration of pro-inflammatory pathways.
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Abstract
Autoreactive B cells can promote autoimmunity through antigen presentation to autoreactive T cells, production of autoantibodies, generation of cytokines promoting T cell activation and differentiation, and inhibition of regulatory T cells and B cells. Here, the authors highlight studies pertaining to B cell mechanisms associated with disease pathogenesis and outcomes in autoimmune hepatitis and the immune-mediated cholangiopathies (primary biliary cholangitis, primary sclerosing cholangitis, and biliary atresia). The vast majority of investigations focus on autoantibodies and future research endeavors should include deciphering the role of the B cell in T cell activation (through antigen presentation, cytokine/chemokine production, and inhibition of regulation). Targeting B cell mechanisms in the treatment of autoimmune liver diseases is also highlighted.
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Affiliation(s)
- Sarah A. Taylor
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Ann & Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - David N. Assis
- Section of Digestive Diseases, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Cara L. Mack
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Digestive Health Institute, Children’s Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
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B cell dysregulation in primary Sjögren's syndrome: A review. JAPANESE DENTAL SCIENCE REVIEW 2019; 55:139-144. [PMID: 31687053 PMCID: PMC6819875 DOI: 10.1016/j.jdsr.2019.09.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 07/02/2019] [Accepted: 09/19/2019] [Indexed: 12/16/2022] Open
Abstract
Primary Sjögren’s syndrome is a chronic autoimmune disorder of unknown etiology and is characterized by progressive focal lymphocytic infiltration of the lacrimal and salivary glands. Comparison of B cell subsets from the peripheral blood and salivary glands of patients with primary Sjögren’s syndrome and those from healthy individuals shows dysregulation and derangement of B cell subsets in both peripheral circulation and in inflamed glandular tissues. This dysregulation is expressed as a decrease in the percentage of CD27+ memory B cells in peripheral blood and an increase in the CD27+ memory B cells in the affected glands. Further, the overall percentage of long-lived autoantibodies-producing plasma cells within the affected glands is increased. In the last two decades, several studies have shown growing evidences that B cells play multiple roles in primary Sjögren’s syndrome pathophysiology, and that dysregulation of these cells may actually play a central role in the disease development.
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Xu J, Luo X, Qu S, Yang G, Shen N. B cell activation factor (BAFF) induces inflammation in the human fallopian tube leading to tubal pregnancy. BMC Pregnancy Childbirth 2019; 19:169. [PMID: 31088412 PMCID: PMC6518762 DOI: 10.1186/s12884-019-2324-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 04/30/2019] [Indexed: 12/14/2022] Open
Abstract
Background Tubal pregnancy is recognized as one of the most common ectopic pregnancy types. Salpingitis may result in tubal pregnancy by causing fallopian tube occlusion and hydrosalpinx. B cell activation factor (BAFF) is a proinflammatory cytokine that helps regulate both innate and adaptive immune responses. Our previous study firstly showed that BAFF immunostaining appeared on the cellular membrane and in the cytoplasm of tubal epithelial cells, and both BAFF protein and mRNA in human inflamed fallopian tubes had higher expression levels than those in normal fallopian tubes. This study aimed to elucidate the association between the expression of BAFF gene and the inflammation in the human fallopian tube leading to tubal pregnancy. Methods We examined 70 patients undergoing salpingectomy for salpingitis (n = 35) and tubal pregnancy (n = 35). Twenty patients with benign uterine diseases undergoing complete hysterectomy and salpingectomy were recruited into control group. BAFF mRNA and protein in tissue samples were detected by qPCR and Western blotting methods. Furthermore, serum levels of BAFF, tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 were measured using ELISA kits. Results We found statistically significantly elevated expressions of BAFF mRNA or protein in whole tissue samples, and serum levels of BAFF, TNF-α and IL-6 in whole blood samples from patients with salpingitis and tubal pregnancy, in comparison to the control group. Conclusion Based on the results, high expression of BAFF gene might induce inflammation in the human fallopian tube, suggesting its possible role in the tubal pregnancy process.
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Affiliation(s)
- Jianying Xu
- Zhuhai Municipal Maternal and Children's Health Hospital, 543 Ningxi Road, Zhuhai, 519000, Guangdong, China.
| | - Xingguang Luo
- Division of human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Shihao Qu
- Zhuhai Municipal Maternal and Children's Health Hospital, 543 Ningxi Road, Zhuhai, 519000, Guangdong, China
| | - Guiyan Yang
- Zhuhai Municipal Maternal and Children's Health Hospital, 543 Ningxi Road, Zhuhai, 519000, Guangdong, China
| | - Nianchun Shen
- Zhuhai Municipal Maternal and Children's Health Hospital, 543 Ningxi Road, Zhuhai, 519000, Guangdong, China
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Lima J, Cambridge G, Vilas‐Boas A, Martins C, Borrego L, Leandro M. Serum markers of B-cell activation in pregnancy during late gestation, delivery, and the postpartum period. Am J Reprod Immunol 2019; 81:e13090. [PMID: 30624814 PMCID: PMC6590212 DOI: 10.1111/aji.13090] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/30/2018] [Accepted: 01/07/2019] [Indexed: 12/17/2022] Open
Abstract
PROBLEM B cells are vital for the normal evolution of pregnancy due to their humoral and possible regulatory activities. Our group and others have documented that circulating B-cell subsets undergo changes from normal late pregnancy to the postpartum period. However, the underlying mechanisms are poorly understood. Therefore, this study examined the degree of B-cell activation in normal pregnancy by analyzing the levels of serum markers in healthy pregnant women during the third trimester of pregnancy, the day of delivery, and the postpartum period. METHOD OF STUDY A prospective study including pregnant and non-pregnant women attending routine care was undertaken at a hospital clinic. Sociodemographic and clinical data were collected, along with peripheral blood samples. The serum levels of soluble CD23 (sCD23), B-cell-activating factor (BAFF), kappa (κ) and lambda (λ) free light chains (FLC), IgA, IgG, and IgM were quantified. RESULTS Our study included 43 third trimester pregnant and 35 non-pregnant women. In the pregnant women, the median levels of sCD23, BAFF, IgG, and κ FLC were significantly higher during the postpartum period than during the third trimester of pregnancy. Compared to the non-pregnant women, the third trimester pregnant women had higher median BAFF levels and lower sCD23, IgA, IgG, and FLC levels. CONCLUSION Changes in serum markers of B-cell kinetics that occur during pregnancy often persist into the postpartum period and affect the secretion of immunoglobulins from different classes. Further studies are needed to clarify the biological significance of our observations.
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Affiliation(s)
- Jorge Lima
- Department of Obstetrics and GynecologyCUF Descobertas HospitalLisbonPortugal
- Department of Immunology, Chronic Diseases Research Center (CEDOC), Faculty of Medical SciencesNOVA Medical SchoolLisbonPortugal
| | - Geraldine Cambridge
- Centre for Rheumatology and Bloomsbury Rheumatology Unit, Division of MedicineUniversity College LondonLondonUK
| | - Andreia Vilas‐Boas
- Centre for Rheumatology and Bloomsbury Rheumatology Unit, Division of MedicineUniversity College LondonLondonUK
| | - Catarina Martins
- Department of Immunology, Chronic Diseases Research Center (CEDOC), Faculty of Medical SciencesNOVA Medical SchoolLisbonPortugal
| | - Luís‐Miguel Borrego
- Department of Immunology, Chronic Diseases Research Center (CEDOC), Faculty of Medical SciencesNOVA Medical SchoolLisbonPortugal
- Department of ImmunoallergyCUF Descobertas HospitalLisbonPortugal
| | - Maria Leandro
- Centre for Rheumatology and Bloomsbury Rheumatology Unit, Division of MedicineUniversity College LondonLondonUK
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Goules AV, Tzioufas AG. Lymphomagenesis in Sjögren's syndrome: Predictive biomarkers towards precision medicine. Autoimmun Rev 2018; 18:137-143. [PMID: 30572133 DOI: 10.1016/j.autrev.2018.08.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 08/08/2018] [Indexed: 12/22/2022]
Abstract
Sjögren's syndrome (SS) is characterized by B cell hyperactivity documented by the production of plethora of autoantibodies and a strong tendency for NHL of B cell origin. Classical predictors of lymphoma have been already proposed and proved their validity, including clinical, serological and histopathologic biomarkers. The process of lymphomagenesis is multistep and encompasses mechanisms of antigen driven selection of the BCR with RF activity and various genetic contributors implicated in B cell proliferation, cell growth and cell cycle control, enhanced by a complex milieu of cytokines and trophic agents that are abundant within the inflammatory lesion of minor salivary glands of SS patients. Extensive efforts in the basic research field have revealed several novel biomarkers for lymphoma prediction while the major cellular and molecular mechanisms of evolutionary transition of B cells towards malignancy are under investigation. In this review, we present the current data regarding the newly proposed biomarkers for SS associated lymphoma prediction and a hypothetical model of lymphomagenesis based on the emerging data.
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Affiliation(s)
- Andreas V Goules
- Department of Pathophysiology, School of Medicine, University of Athens, Mikras Asias Str 75, 115 27 Athens, Greece
| | - Athanasios G Tzioufas
- Department of Pathophysiology, School of Medicine, University of Athens, Mikras Asias Str 75, 115 27 Athens, Greece.
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The role of APRIL - A proliferation inducing ligand - In autoimmune diseases and expectations from its targeting. J Autoimmun 2018; 95:179-190. [DOI: 10.1016/j.jaut.2018.10.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 12/12/2022]
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PD-1 immunobiology in systemic lupus erythematosus. J Autoimmun 2018; 97:1-9. [PMID: 30396745 DOI: 10.1016/j.jaut.2018.10.025] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/22/2018] [Accepted: 10/28/2018] [Indexed: 01/22/2023]
Abstract
Programmed death (PD)-1 receptors and their ligands have been identified in the pathogenesis and development of systemic lupus erythematosus (SLE). Two key pathways, toll-like receptor and type I interferon, are significant to SLE pathogenesis and modulate the expression of PD-1 and the ligands (PD-L1, PD-L2) through activation of NF-κB and/or STAT1. These cell signals are regulated by tyrosine kinase (Tyro, Axl, Mer) receptors (TAMs) that are aberrantly activated in SLE. STAT1 and NF-κB also exhibit crosstalk with the aryl hydrocarbon receptor (AHR). Ligands to AHR are identified in SLE etiology and pathogenesis. These ligands also regulate the activity of the Epstein-Barr virus (EBV), which is an identified factor in SLE and PD-1 immunobiology. AHR is important in the maintenance of immune tolerance and the development of distinct immune subsets, highlighting a potential role of AHR in PD-1 immunobiology. Understanding the functions of AHR ligands as well as AHR crosstalk with STAT1, NF-κB, and EBV may provide insight into disease development, the PD-1 axis and immunotherapies that target PD-1 and its ligand, PD-L1.
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Bell K, Und Hohenstein-Blaul NVT, Teister J, Grus F. Modulation of the Immune System for the Treatment of Glaucoma. Curr Neuropharmacol 2018; 16:942-958. [PMID: 28730968 PMCID: PMC6120111 DOI: 10.2174/1570159x15666170720094529] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/17/2017] [Accepted: 07/18/2017] [Indexed: 12/20/2022] Open
Abstract
Background: At present intraocular pressure (IOP) lowering therapies are the only approach to treat glaucoma. Neuroprotective strategies to protect the retinal ganglion cells (RGC) from apoptosis are lacking to date. Substantial amount of research concerning the role of the immune system in glaucoma has been performed in the recent years. This review aims to analyse changes found in the peripheral immune system, as well as selected local changes of retina immune cells in the glaucomatous retina. Methods: By dividing the immune system into the innate and the adaptive immune system, a systematic literature research was performed to find recent approaches concerning the modulation of the immune system in the context of glaucoma. Also ClinicalTrials.gov was assessed to identify studies with a translational context. Results: We found that some aspects of the immune system, such as changes in antibody levels, changes in toll like receptor signalling, T cells and retinal microglial cells, experience more research activity than other areas such as changes in dendritic cells or macrophages. Briefly, results from clinical studies revealed altered immunoreactivities against retinal and optic nerve antigens in sera and aqueous humor of glaucoma patients and point toward an autoimmune involvement in glaucomatous neurodegeneration and RGC death. IgG accumulations along with plasma cells were found localised in human glaucomatous retinae in a pro-inflammatory environment possibly maintained by microglia. Animal studies show that antibodies (e.g. anti- heat shock protein 60 and anti-myelin basic protein) elevated in glaucoma patients provoke autoaggressive RGC loss and are associated with IgG depositions and increased microglial cells. Also, studies addressing changes in T lymphocytes, macrophages but also local immune responses in the retina have been performed and also hold promising results. Conclusions: This recapitulation of recent literature demonstrates that the immune system definitely plays a role in the pathogenesis of glaucoma. Multiple changes in the peripheral innate as well as adaptive immune system have been detected and give room for further research concerning valuable therapeutic targets. We conclude that there still is a great need to bring together the results derived from basic research analysing different aspects of the immune system in glaucoma to understand the immune context of the disease. Furthermore local immune changes in the retina of glaucoma patients still leave room for further therapeutic targets
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Affiliation(s)
- Katharina Bell
- Experimental and Translational Ophthalmology Mainz, Department of Ophthalmology, Medical Center of the Johannes Gutenberg University Mainz; Langenbeckstrasse 1, 55101 Mainz, Germany
| | - Nadine von Thun Und Hohenstein-Blaul
- Experimental and Translational Ophthalmology Mainz, Department of Ophthalmology, Medical Center of the Johannes Gutenberg University Mainz; Langenbeckstrasse 1, 55101 Mainz, Germany
| | - Julia Teister
- Experimental and Translational Ophthalmology Mainz, Department of Ophthalmology, Medical Center of the Johannes Gutenberg University Mainz; Langenbeckstrasse 1, 55101 Mainz, Germany
| | - Franz Grus
- Experimental and Translational Ophthalmology Mainz, Department of Ophthalmology, Medical Center of the Johannes Gutenberg University Mainz; Langenbeckstrasse 1, 55101 Mainz, Germany
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Dong X, Qin J, Ma J, Zeng Q, Zhang H, Zhang R, Liu C, Xu C, Zhang S, Huang S, Chen L. BAFF inhibits autophagy promoting cell proliferation and survival by activating Ca 2+-CaMKII-dependent Akt/mTOR signaling pathway in normal and neoplastic B-lymphoid cells. Cell Signal 2018; 53:68-79. [PMID: 30244168 DOI: 10.1016/j.cellsig.2018.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 11/30/2022]
Abstract
B cell activating factor from the TNF family (BAFF) is implicated in not only the physiology of normal B cells, but also the pathophysiology of aggressive B cells related to malignant and autoimmune diseases. Autophagy plays a crucial role in balancing the beneficial and detrimental effects of immunity and inflammation. However, little is known about whether and how excessive BAFF mediates autophagy contributing to B-cell proliferation and survival. Here, we show that excessive human soluble BAFF (hsBAFF) inhibited autophagy with a concomitant reduction of LC3-II in normal and B-lymphoid (Raji) cells. Knockdown of LC3 not only potentiated hsBAFF inhibition of autophagy, but also attenuated hsBAFF activation of Akt/mTOR pathway, thereby diminishing hsBAFF-induced B-cell proliferation/viability. Further, we found that hsBAFF inhibition of autophagy was Akt/mTOR-dependent. This is supported by the findings that hsBAFF increased mTORC1-mediated phosphorylation of ULK1 (Ser757); Akt inhibitor X, mTORC1 inhibitor rapamycin, mTORC1/2 inhibitor PP242, expression of dominant negative Akt, or knockdown of mTOR attenuated hsBAFF-induced phosphorylation of ULK1, decrease of LC3-II level, and increase of cell proliferation/viability. Chelating intracellular free Ca2+ ([Ca2+]i) with BAPTA/AM or preventing [Ca2+]i elevation using EGTA or 2-APB profoundly blocked hsBAFF-induced activation of Akt/mTOR, phosphorylation of ULK1 and decrease of LC3-II, as well as increase of cell proliferation/viability. Similar effects were observed in the cells where CaMKII was inhibited by KN93 or knocked down by CaMKII shRNA. Collectively, these results indicate that hsBAFF inhibits autophagy promoting cell proliferation and survival through activating Ca2+-CaMKII-dependent Akt/mTOR signaling pathway in normal and neoplastic B-lymphoid cells. Our findings suggest that manipulation of intracellular Ca2+ level or CaMKII, Akt, or mTOR activity to promote autophagy may be exploited for prevention of excessive BAFF-induced aggressive B lymphocyte disorders and autoimmune diseases.
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Affiliation(s)
- Xiaoqing Dong
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Jiamin Qin
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Jing Ma
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Qingyu Zeng
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Hai Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Ruijie Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Chunxiao Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Chong Xu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Shuangquan Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3932, USA; Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3932, USA.
| | - Long Chen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, PR China.
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Myalgic Encephalomyelitis/Chronic Fatigue Syndrome - Evidence for an autoimmune disease. Autoimmun Rev 2018; 17:601-609. [PMID: 29635081 DOI: 10.1016/j.autrev.2018.01.009] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 01/07/2018] [Indexed: 12/13/2022]
Abstract
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a frequent and severe chronic disease drastically impairing life quality. The underlying pathomechanism is incompletely understood yet but there is convincing evidence that in at least a subset of patients ME/CFS has an autoimmune etiology. In this review, we will discuss current autoimmune aspects for ME/CFS. Immune dysregulation in ME/CFS has been frequently described including changes in cytokine profiles and immunoglobulin levels, T- and B-cell phenotype and a decrease of natural killer cell cytotoxicity. Moreover, autoantibodies against various antigens including neurotransmitter receptors have been recently identified in ME/CFS individuals by several groups. Consistently, clinical trials from Norway have shown that B-cell depletion with rituximab results in clinical benefits in about half of ME/CFS patients. Furthermore, recent studies have provided evidence for severe metabolic disturbances presumably mediated by serum autoantibodies in ME/CFS. Therefore, further efforts are required to delineate the role of autoantibodies in the onset and pathomechanisms of ME/CFS in order to better understand and properly treat this disease.
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Chan CT, Lieu M, Sobey CG, Drummond GR, Vinh A. Diagnosing and Treating Hypertensive Disorders of Pregnancy? Hypertension 2017; 70:884-886. [DOI: 10.1161/hypertensionaha.117.09849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Christopher T. Chan
- From the Massachusetts General Hospital, Harvard Medical School, Boston (C.T.C.); Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia (M.L.); and Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia (C.G.S., G.R.D., A.V.)
| | - Maggie Lieu
- From the Massachusetts General Hospital, Harvard Medical School, Boston (C.T.C.); Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia (M.L.); and Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia (C.G.S., G.R.D., A.V.)
| | - Christopher G. Sobey
- From the Massachusetts General Hospital, Harvard Medical School, Boston (C.T.C.); Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia (M.L.); and Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia (C.G.S., G.R.D., A.V.)
| | - Grant R. Drummond
- From the Massachusetts General Hospital, Harvard Medical School, Boston (C.T.C.); Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia (M.L.); and Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia (C.G.S., G.R.D., A.V.)
| | - Antony Vinh
- From the Massachusetts General Hospital, Harvard Medical School, Boston (C.T.C.); Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia (M.L.); and Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia (C.G.S., G.R.D., A.V.)
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Taher TE, Bystrom J, Ong VH, Isenberg DA, Renaudineau Y, Abraham DJ, Mageed RA. Intracellular B Lymphocyte Signalling and the Regulation of Humoral Immunity and Autoimmunity. Clin Rev Allergy Immunol 2017; 53:237-264. [PMID: 28456914 PMCID: PMC5597704 DOI: 10.1007/s12016-017-8609-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
B lymphocytes are critical for effective immunity; they produce antibodies and cytokines, present antigens to T lymphocytes and regulate immune responses. However, because of the inherent randomness in the process of generating their vast repertoire of antigen-specific receptors, B cells can also cause diseases through recognizing and reacting to self. Therefore, B lymphocyte selection and responses require tight regulation at multiple levels and at all stages of their development and activation to avoid diseases. Indeed, newly generated B lymphocytes undergo rigorous tolerance mechanisms in the bone marrow and, subsequently, in the periphery after their migration. Furthermore, activation of mature B cells is regulated through controlled expression of co-stimulatory receptors and intracellular signalling thresholds. All these regulatory events determine whether and how B lymphocytes respond to antigens, by undergoing apoptosis or proliferation. However, defects that alter regulated co-stimulatory receptor expression or intracellular signalling thresholds can lead to diseases. For example, autoimmune diseases can result from altered regulation of B cell responses leading to the emergence of high-affinity autoreactive B cells, autoantibody production and tissue damage. The exact cause(s) of defective B cell responses in autoimmune diseases remains unknown. However, there is evidence that defects or mutations in genes that encode individual intracellular signalling proteins lead to autoimmune diseases, thus confirming that defects in intracellular pathways mediate autoimmune diseases. This review provides a synopsis of current knowledge of signalling proteins and pathways that regulate B lymphocyte responses and how defects in these could promote autoimmune diseases. Most of the evidence comes from studies of mouse models of disease and from genetically engineered mice. Some, however, also come from studying B lymphocytes from patients and from genome-wide association studies. Defining proteins and signalling pathways that underpin atypical B cell response in diseases will help in understanding disease mechanisms and provide new therapeutic avenues for precision therapy.
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Affiliation(s)
- Taher E Taher
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Jonas Bystrom
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Voon H Ong
- Centre for Rheumatology and Connective Tissue Diseases, Royal Free Hospital, University College London, London, UK
| | | | - Yves Renaudineau
- Immunology Laboratory, University of Brest Medical School, Brest, France
| | - David J Abraham
- Centre for Rheumatology and Connective Tissue Diseases, Royal Free Hospital, University College London, London, UK
| | - Rizgar A Mageed
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK.
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