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Hopkin SJ, Pezhman L, Begum J, Kavanagh D, McGettrick HM, Iqbal AJ, Chimen M. Aging modulates homeostatic leukocyte trafficking to the peritoneal cavity in a sex-specific manner. J Leukoc Biol 2023; 114:301-314. [PMID: 37309034 PMCID: PMC10533226 DOI: 10.1093/jleuko/qiad053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/28/2023] [Accepted: 04/28/2023] [Indexed: 06/14/2023] Open
Abstract
Aging is associated with exacerbated systemic inflammation (inflammaging) and the progressive loss of immune system function (immunosenescence). Leukocyte migration is necessary for effective immunity; however, dysregulated trafficking of leukocytes into tissue contributes to inflammaging and the development of age-related inflammatory diseases. Aging modulates leukocyte trafficking under inflammatory conditions; however, whether aging modulates leukocyte trafficking under homeostatic conditions remains to be elucidated. Although immune responses are evidently sexually dimorphic, limited studies have investigated the effect of sex on age-related changes to leukocyte trafficking processes. Here, we investigated age-related and sex-specific changes to the leukocyte populations within the peritoneal cavity of young (3-mo), middle-aged (18-mo) and old (21-mo) male and female wild-type mice in the steady state. We found an age-related increase in the number of leukocytes within the peritoneal cavity of female mice, predominantly B cells, which may reflect increased trafficking through this tissue with age. This was accompanied by an increased inflammatory environment within the aged cavity, including increased levels of chemoattractants, including B cell chemoattractants CXCL13 and CCL21, soluble adhesion molecules, and proinflammatory cytokines, which was more pronounced in aged female mice. Intravital microscopy techniques revealed altered vascular structure and increased vascular permeability within the peritoneal membrane of aged female mice, which may support increased leukocyte trafficking to the cavity with age. Together, these data indicate that aging affects homeostatic leukocyte trafficking processes in a sex-specific fashion.
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Affiliation(s)
- Sophie J Hopkin
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Laleh Pezhman
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Jenefa Begum
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Dean Kavanagh
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Helen M McGettrick
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Asif J Iqbal
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Myriam Chimen
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, United Kingdom
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Olson WJ, Jakic B, Labi V, Woelk J, Derudder E, Baier G, Hermann-Kleiter N. A role for the nuclear receptor NR2F6 in peritoneal B cell homeostasis. Front Immunol 2022; 13:845235. [PMID: 36052079 PMCID: PMC9425112 DOI: 10.3389/fimmu.2022.845235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 07/18/2022] [Indexed: 11/19/2022] Open
Abstract
B cells are key mediators of humoral immunity. Mature B cells fall into various sub-classes that can be separated by their ontogeny, expression of cell surface markers, anatomical location, and function. B1 subsets play important roles in natural immunity and constitute the majority of B cells in newborns. In the adult, B1 cells predominate in the pleural and peritoneal cavities, while the mature B2 follicular subset makes up the major fraction of B cells in lymphoid tissue, although important subsets of antibody-secreting B1 cells are also present at these sites. B1 cells are the main producers of natural IgM but can also contribute to elimination of some pathogens, while B2 cells primarily mediate response to foreign antigens. The differential molecular underpinning of the B1 and B2 subsets remains incompletely understood. Here we demonstrate that germline-deficiency of the orphan nuclear receptor NR2F6 causes a partial loss of B1b and B2 B cells in the peritoneum while leaving peritoneal B1a cells unaltered. A competitive bone marrow chimera in Nr2f6+/+ host mice produced similar numbers of Nr2f6+/+ and Nr2f6-/- peritoneal B1b and B2 cells. The proliferation of Nr2f6-/- peritoneal B cells was not altered, while the migration marker CXCR5 was reduced on all subsets but Beta7-integrin was reduced only on peritoneal B1b and B2 cells. Similarly, B1b and B2 but not B1a cells, exhibited significantly reduced survival.
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Affiliation(s)
- William J. Olson
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
- *Correspondence: William J. Olson, ; Natascha Hermann-Kleiter,
| | - Bojana Jakic
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Verena Labi
- Institute of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Woelk
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Emmanuel Derudder
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Gottfried Baier
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Natascha Hermann-Kleiter
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
- *Correspondence: William J. Olson, ; Natascha Hermann-Kleiter,
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Barlev AN, Malkiel S, Kurata-Sato I, Dorjée AL, Suurmond J, Diamond B. FcɣRIIB regulates autoantibody responses by limiting marginal zone B cell activation. J Clin Invest 2022; 132:157250. [PMID: 35819855 PMCID: PMC9435648 DOI: 10.1172/jci157250] [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: 12/06/2021] [Accepted: 07/07/2022] [Indexed: 11/17/2022] Open
Abstract
FcɣRIIB is an inhibitory receptor expressed throughout B cell development. Diminished expression or function is associated with lupus in mice and humans, in particular through an effect on autoantibody production and plasma cell differentiation. Here, we analysed the effect of B cell-intrinsic FcɣRIIB expression on B cell activation and plasma cell differentiation. Loss of FcɣRIIB on B cells (Fcgr2b cKO mice) led to a spontaneous increase in autoantibody titers. This increase was most striking for IgG3, suggestive of increased extrafollicular responses. Marginal zone (MZ) B cells had the highest expression of FcɣRIIB in both mouse and human. This high expression of FcɣRIIB was linked to increased MZ B cell activation, Erk phosphorylation, and calcium fluxin the absence of FcɣRIIB triggering. Marked increases in IgG3+ plasma cells and B cells were observed during extrafollicular plasma cell responses in Fcgr2b cKO mice. The increased IgG3 response following immunization of Fcgr2b cKO mice was lost in MZ-deficient Notch2/Fcgr2b cKO mice. Importantly, SLE patients exhibited decreased expression of FcɣRIIB, most strongly in MZ B cells. Thus, we present a model where high FcɣRIIB expression in MZ B cells prevents their hyperactivation and ensuing autoimmunity.
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Affiliation(s)
- Ashley N Barlev
- Center for Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institute for Medical Research, Manhasset, United States of America
| | - Susan Malkiel
- Center of Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, United States of America
| | - Izumi Kurata-Sato
- Center of Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, United States of America
| | - Annemarie L Dorjée
- Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Jolien Suurmond
- Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Betty Diamond
- Center of Autoimmune Musculoskeletal and Hematopoietic Diseases, The Feinstein Institute for Medical Research, Manhasset, United States of America
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4
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Pattarabanjird T, Marshall M, Upadhye A, Srikakulapu P, Garmey J, Haider A, Taylor AM, Lutgens E, McNamara CA. B-1b Cells Possess Unique bHLH-Driven P62-Dependent Self-Renewal and Atheroprotection. Circ Res 2022; 130:981-993. [PMID: 35209718 PMCID: PMC9075598 DOI: 10.1161/circresaha.121.320436] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND B1a and B1b lymphocytes produce IgM that inactivates oxidation-specific epitopes (IgMOSE) on LDL (low-density lipoprotein) and protects against atherosclerosis. Loss of ID3 (inhibitor of differentiation 3) in B cells selectively promotes B1b but not B1a cell numbers, leading to higher IgMOSE production and reduction in atherosclerotic plaque formation. Yet, the mechanism underlying this regulation remains unexplored. METHODS Bulk RNA sequencing was utilized to identify differentially expressed genes in B1a and B1b cells from Id3KO and Id3WT mice. CRISPR/Cas9 and lentiviral genome editing coupled with adoptive transfer were used to identify key Id3-dependent signaling pathways regulating B1b cell proliferation and the impact on atherosclerosis. Biospecimens from humans with advanced coronary artery disease imaging were analyzed to translate murine findings to human subjects with coronary artery disease. RESULTS Through RNA sequencing, P62 was found to be enriched in Id3KO B1b cells. Further in vitro characterization reveals a novel role for P62 in mediating BAFF (B-cell activating factor)-induced B1b cell proliferation through interacting with TRAF6 and activating NF-κB (nuclear factor kappa B), leading to subsequent C-MYC upregulation. Promoter-reporter assays reveal that Id3 inhibits the E2A protein from activating the P62 promoter. Mice adoptively transferred with B1 cells overexpressing P62 exhibited an increase in B1b cell number and IgMOSE levels and were protected against atherosclerosis. Consistent with murine mechanistic findings, P62 expression in human B1 cells was significantly higher in subjects harboring a function-impairing SNP (rs11574) in the ID3 gene and directly correlated with plasma IgMOSE levels. CONCLUSIONS This study unveils a novel role for P62 in driving BAFF-induced B1b cell proliferation and IgMOSE production to attenuate diet-induced atherosclerosis. Results identify a direct role for Id3 in antagonizing E2A from activating the p62 promoter. Moreover, analysis of putative human B1 cells also implicates these pathways in coronary artery disease subjects, suggesting P62 as a new immunomodulatory target for treating atherosclerosis.
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Affiliation(s)
- Tanyaporn Pattarabanjird
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Melissa Marshall
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
| | - Aditi Upadhye
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
| | - Prasad Srikakulapu
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
| | - James Garmey
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
| | - Antony Haider
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
| | - Angela M. Taylor
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, Virginia, United States
| | - Esther Lutgens
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-Universität, Munich, Germany; and German Centre for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany
| | - Coleen A. McNamara
- Carter Immunology Center, University of Virginia, Charlottesville, Virginia, United States
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, United States
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, Virginia, United States
- Correspondence: Corresponding Author, , Phone: 434-243-5854, Address: 345 Crispell Dr. Charlottesville, VA 22908
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5
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Wright JA, Bazile C, Clark ES, Carlesso G, Boucher J, Kleiman E, Mahmoud T, Cheng LI, López-Rodríguez DM, Satterthwaite AB, Altman NH, Greidinger EL, Khan WN. Impaired B Cell Apoptosis Results in Autoimmunity That Is Alleviated by Ablation of Btk. Front Immunol 2021; 12:705307. [PMID: 34512628 PMCID: PMC8427801 DOI: 10.3389/fimmu.2021.705307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/30/2021] [Indexed: 01/23/2023] Open
Abstract
While apoptosis plays a role in B-cell self-tolerance, its significance in preventing autoimmunity remains unclear. Here, we report that dysregulated B cell apoptosis leads to delayed onset autoimmune phenotype in mice. Our longitudinal studies revealed that mice with B cell-specific deletion of pro-apoptotic Bim (BBimfl/fl ) have an expanded B cell compartment with a notable increase in transitional, antibody secreting and recently described double negative (DN) B cells. They develop greater hypergammaglobulinemia than mice lacking Bim in all cells and accumulate several autoantibodies characteristic of Systemic Lupus Erythematosus (SLE) and related Sjögren's Syndrome (SS) including anti-nuclear, anti-Ro/SSA and anti-La/SSB at a level comparable to NODH2h4 autoimmune mouse model. Furthermore, lymphocytes infiltrated the tissues including submandibular glands and formed follicle-like structures populated with B cells, plasma cells and T follicular helper cells indicative of ongoing immune reaction. This autoimmunity was ameliorated upon deletion of Bruton's tyrosine kinase (Btk) gene, which encodes a key B cell signaling protein. These studies suggest that Bim-mediated apoptosis suppresses and B cell tyrosine kinase signaling promotes B cell-mediated autoimmunity.
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Affiliation(s)
- Jacqueline A. Wright
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Cassandra Bazile
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Emily S. Clark
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Gianluca Carlesso
- Early Oncology Discovery, Early Oncology R&D, AstraZeneca, Gaithersburg, MD, United States
| | - Justin Boucher
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Eden Kleiman
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Tamer Mahmoud
- Early Oncology Discovery, Early Oncology R&D, AstraZeneca, Gaithersburg, MD, United States
| | - Lily I. Cheng
- Oncology Safety/Pathology, Clinical Pharmacology and Safety Sciences, AstraZeneca, Gaithersburg, MD, United States
| | - Darlah M. López-Rodríguez
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Anne B. Satterthwaite
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Norman H. Altman
- Department of Pathology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Eric L. Greidinger
- Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Wasif N. Khan
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
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6
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Trend S, Leffler J, Teige I, Frendéus B, Kermode AG, French MA, Hart PH. FcγRIIb Expression Is Decreased on Naive and Marginal Zone-Like B Cells From Females With Multiple Sclerosis. Front Immunol 2021; 11:614492. [PMID: 33505402 PMCID: PMC7832177 DOI: 10.3389/fimmu.2020.614492] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/30/2020] [Indexed: 12/21/2022] Open
Abstract
B cells are critical to the development of multiple sclerosis (MS), but the mechanisms by which they contribute to the disease are poorly defined. We hypothesised that the expression of CD32b (FcγRIIb), a receptor for the Fc region of IgG with inhibitory activities in B cells, is lower on B cell subsets from people with clinically isolated syndrome (CIS) or MS. CD32b expression was highest on post-naive IgM+ B cell subsets in healthy controls. For females with MS or CIS, significantly lower CD32b expression was identified on IgM+ B cell subsets, including naive and IgMhi MZ-like B cells, when compared with control females. Lower CD32b expression on these B cell subsets was associated with detectable anti-Epstein Barr Virus viral capsid antigen IgM antibodies, and higher serum levels of B cell activating factor. To investigate the effects of lower CD32b expression, B cells were polyclonally activated in the presence of IgG immune complexes, with or without a CD32b blocking antibody, and the expression of TNF and IL-10 in B cell subsets was assessed. The reduction of TNF but not IL-10 expression in controls mediated by IgG immune complexes was reversed by CD32b blockade in naive and IgMhi MZ-like B cells only. However, no consequence of lower CD32b expression on these cells from females with CIS or MS was detected. Our findings highlight a potential role for naive and marginal zone-like B cells in the immunopathogenesis of MS in females, which requires further investigation.
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Affiliation(s)
- Stephanie Trend
- Inflammation Laboratory, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.,Perron Institute for Neurological and Translational Science, University of Western Australia, Perth, WA, Australia
| | - Jonatan Leffler
- Inflammation Laboratory, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
| | - Ingrid Teige
- Demyelinating Diseases Research Group, BioInvent International AB, Lund, Sweden
| | - Björn Frendéus
- Demyelinating Diseases Research Group, BioInvent International AB, Lund, Sweden
| | - Allan G Kermode
- Perron Institute for Neurological and Translational Science, University of Western Australia, Perth, WA, Australia.,Institute for Immunology and Infectious Disease, Murdoch University, Perth, WA, Australia
| | - Martyn A French
- Medical School and School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Prue H Hart
- Inflammation Laboratory, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
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7
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Franke K, Pillai SY, Hoogenboezem M, Gijbels MJJ, Matlung HL, Geissler J, Olsman H, Pottgens C, van Gorp PJ, Ozsvar-Kozma M, Saito Y, Matozaki T, Kuijpers TW, Hendriks RW, Kraal G, Binder CJ, de Winther MPJ, van den Berg TK. SIRPα on Mouse B1 Cells Restricts Lymphoid Tissue Migration and Natural Antibody Production. Front Immunol 2020; 11:570963. [PMID: 33162986 PMCID: PMC7581795 DOI: 10.3389/fimmu.2020.570963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/17/2020] [Indexed: 01/19/2023] Open
Abstract
The inhibitory immunoreceptor SIRPα is expressed on myeloid and neuronal cells and interacts with the broadly expressed CD47. CD47-SIRPα interactions form an innate immune checkpoint and its targeting has shown promising results in cancer patients. Here, we report expression of SIRPα on B1 lymphocytes, a subpopulation of murine B cells responsible for the production of natural antibodies. Mice defective in SIRPα signaling (SIRPαΔCYT mice) displayed an enhanced CD11b/CD18 integrin-dependent B1 cell migration from the peritoneal cavity to the spleen, local B1 cell accumulation, and enhanced circulating natural antibody levels, which was further amplified upon immunization with T-independent type 2 antigen. As natural antibodies are atheroprotective, we investigated the involvement of SIRPα signaling in atherosclerosis development. Bone marrow (SIRPαΔCYT>LDLR−/−) chimaeric mice developed reduced atherosclerosis accompanied by increased natural antibody production. Collectively, our data identify SIRPα as a unique B1 cell inhibitory receptor acting to control B1 cell migration, and imply SIRPα as a potential therapeutic target in atherosclerosis.
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Affiliation(s)
- Katka Franke
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | | | - Mark Hoogenboezem
- Sanquin Research and Landsteiner Laboratory, Department of Plasma Protein, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Marion J J Gijbels
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.,Department of Pathology, CARIM, Cardiovascular Research Institute Maastricht, GROW-School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Judy Geissler
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Hugo Olsman
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Chantal Pottgens
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Patrick J van Gorp
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Maria Ozsvar-Kozma
- Department of Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.,Department of Pediatric Hematology, Immunology and Infectious Disease, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC, Rotterdam, Netherlands
| | - Georg Kraal
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Christoph J Binder
- Department of Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - Menno P J de Winther
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.,Institute for Cardiovascular Prevention (IPEK), Munich, Germany
| | - Timo K van den Berg
- Sanquin Research and Landsteiner Laboratory, Department of Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.,Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
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8
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Abstract
Monoclonal antibody targeting the CD20 antigen on B cells is used to treat the majority of non-Hodgkin lymphoma patients and some autoimmune disorders. This therapy generates adverse effects, notably opportunistic infections and activation of viruses from latency. Here, using the infection murine model with the intracellular parasite Trypanosoma cruzi, we report that anti-CD20 treatment affects not only B cell responses but also CD8+ T cell responses, representing the most important immune effectors involved in control of intracellular pathogens. Anti-CD20 treatment, directly or indirectly, affects cytotoxic T cell number and function, and this deficient response was rescued by the cytokine IL-17A. The identification of IL-17A as the cytokine capable of reversing the poor response of CD8+ T cells provides information about a potential therapeutic treatment aimed at enhancing defective immunity induced by B cell depletion. Treatment with anti-CD20, used in many diseases in which B cells play a pathogenic role, has been associated with susceptibility to intracellular infections. Here, we studied the effect of anti-CD20 injection on CD8+ T cell immunity using an experimental model of Trypanosoma cruzi infection, in which CD8+ T cells play a pivotal role. C57BL/6 mice were treated with anti-CD20 for B cell depletion prior to T. cruzi infection. Infected anti-CD20-treated mice exhibited a CD8+ T cell response with a conserved expansion phase followed by an early contraction, resulting in a strong reduction in total and parasite-specific CD8+ T cell numbers at 20 days postinfection. Anti-CD20 injection increased the frequency of apoptotic CD8+ T cells, decreased the number of effector and memory CD8+ T cells, and reduced the frequency of proliferating and cytokine-producing CD8+ T cells. Accordingly, infected anti-CD20-treated mice presented lower cytotoxicity of T. cruzi peptide-pulsed target cells in vivo. All of these alterations in CD8+ T cell immunity were associated with increased tissue parasitism. Anti-CD20 injection also dampened the CD8+ T cell response, when this had already been generated, indicating that B cells were involved in the maintenance rather than the induction of CD8+ T cell immunity. Anti-CD20 injection also resulted in a marked reduction in the frequency of interleukin-6 (IL-6)- and IL-17A-producing cells, and recombinant IL-17A (rIL-17A) injection partially restored the CD8+ T cell response in infected anti-CD20-treated mice. Thus, anti-CD20 reduced CD8+ T cell immunity, and IL-17A is a candidate for rescuing deficient responses either directly or indirectly.
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9
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Verbeek JS, Hirose S, Nishimura H. The Complex Association of FcγRIIb With Autoimmune Susceptibility. Front Immunol 2019; 10:2061. [PMID: 31681256 PMCID: PMC6803437 DOI: 10.3389/fimmu.2019.02061] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 08/15/2019] [Indexed: 12/20/2022] Open
Abstract
FcγRIIb is the only inhibitory Fc receptor and controls many aspects of immune and inflammatory responses. The observation 19 years ago that Fc γ RIIb -/- mice generated by gene targeting in 129 derived ES cells developed severe lupus like disease when backcrossed more than 7 generations into C57BL/6 background initiated extensive research on the functional understanding of this strong autoimmune phenotype. The genomic region in the distal part of Chr1 both in human and mice in which the Fc γ R gene cluster is located shows a high level of complexity in relation to the susceptibility to SLE. Specific haplotypes of closely linked genes including the Fc γ RIIb and Slamf genes are associated with increased susceptibility to SLE both in mice and human. Using forward and reverse genetic approaches including in human GWAS and in mice congenic strains, KO mice (germline and cell type specific, on different genetic background), knockin mice, overexpressing transgenic mice combined with immunological models such as adoptive transfer of B cells from Ig transgenic mice the involved genes and the causal mutations and their associated functional alterations were analyzed. In this review the results of this 19 years extensive research are discussed with a focus on (genetically modified) mouse models.
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Affiliation(s)
- J Sjef Verbeek
- Department of Biomedical Engineering, Toin University of Yokohama, Yokohama, Japan
| | - Sachiko Hirose
- Department of Biomedical Engineering, Toin University of Yokohama, Yokohama, Japan
| | - Hiroyuki Nishimura
- Department of Biomedical Engineering, Toin University of Yokohama, Yokohama, Japan
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10
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Bagchi-Chakraborty J, Francis A, Bray T, Masters L, Tsiantoulas D, Nus M, Harrison J, Broekhuizen M, Leggat J, Clatworthy MR, Espéli M, Smith KG, Binder CJ, Mallat Z, Sage AP. B Cell Fcγ Receptor IIb Modulates Atherosclerosis in Male and Female Mice by Controlling Adaptive Germinal Center and Innate B-1-Cell Responses. Arterioscler Thromb Vasc Biol 2019; 39:1379-1389. [PMID: 31092015 PMCID: PMC6636804 DOI: 10.1161/atvbaha.118.312272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 04/22/2019] [Indexed: 02/02/2023]
Abstract
Objective- Investigate the impact of modulating B cell FcγRIIb (Fcγ receptor IIb) expression on atherosclerosis. Approach and Results- Western diet-induced atherosclerosis was assessed in Ldlr-/- or Apoe-/- mice with B cell-specific overexpression of FcγRIIb or with an FcγRIIb promoter mutation that alters FcγRIIb expression in germinal center (GC) B cells. In males, overexpression of FcγRIIb on B cells severely reduced activated, class switched B cell responses, as indicated by reductions in GC B cells, plasma cells, and serum IgG but not IgM antibodies. Male mice overexpressing FcγRIIb developed less atherosclerosis, suggesting a pathogenic role for GC B cell IgG responses. In support of this hypothesis, male mice with a promoter polymorphism-driven reduction in FcγRIIb on GC B cells but not plasma cells have a converse phenotype of enhanced GC responses and IgG2c antibodies and enhanced atherosclerosis. IgG2c significantly enhanced TNF (tumor necrosis factor) secretion by CD11b+ CD11c+ cells expressing the high-affinity receptor FcγRIV. In females, overexpression of FcγRIIb on B cells not only reduced GC B cell responses but also substantially reduced B-1 cells and IgM antibodies, which translated into acceleration of atherosclerosis. Promoter-driven reduction in FcγRIIb did not alter GC B cell responses in females and, therefore, had no impact on atherosclerosis. Conclusions- B cell FcγRIIb differentially alters proatherogenic adaptive GC B cell and atheroprotective innate B-1 responses in male and female mice fed a western diet. Our results highlight the importance of a better understanding and ability to selectively target B cell responses in future immunotherapeutic approaches against human cardiovascular disease. Visual Overview- An online visual overview is available for this article.
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Affiliation(s)
- Jayashree Bagchi-Chakraborty
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Anna Francis
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Toni Bray
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Leanne Masters
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Dimitrios Tsiantoulas
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Meritxell Nus
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - James Harrison
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Michelle Broekhuizen
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Jennifer Leggat
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
| | - Menna R. Clatworthy
- Division of Immunology (M.R.C., K.G.C.S., Z.M.), Department of Medicine, University of Cambridge, United Kingdom
| | - Marion Espéli
- INSERM U1160, Institut de Recherche Saint-Louis, Saint Louis Hospital, Paris, France (M.E.)
| | - Kenneth G.C. Smith
- Division of Immunology (M.R.C., K.G.C.S., Z.M.), Department of Medicine, University of Cambridge, United Kingdom
| | - Christoph J. Binder
- Department of Laboratory Medicine, Medical University of Vienna, Austria (C.J.B.)
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna (C.J.B.)
| | - Ziad Mallat
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
- Division of Immunology (M.R.C., K.G.C.S., Z.M.), Department of Medicine, University of Cambridge, United Kingdom
- Institut National de la Santé et de la Recherche Médicale, Universite Paris-Descartes, Paris Cardiovascular Research Center, and Université Paris-Descartes, France (Z.M.)
| | - Andrew P. Sage
- From the Division of Cardiovascular Medicine (J.B.-C., A.F., T.B., L.M., D.T., M.N., J.H., M.B., J.L., Z.M., A.P.S.), Department of Medicine, University of Cambridge, United Kingdom
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Tosello Boari J, Araujo Furlan CL, Fiocca Vernengo F, Rodriguez C, Ramello MC, Amezcua Vesely MC, Gorosito Serrán M, Nuñez NG, Richer W, Piaggio E, Montes CL, Gruppi A, Acosta Rodríguez EV. IL-17RA-Signaling Modulates CD8+ T Cell Survival and Exhaustion During Trypanosoma cruzi Infection. Front Immunol 2018; 9:2347. [PMID: 30364284 PMCID: PMC6193063 DOI: 10.3389/fimmu.2018.02347] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/21/2018] [Indexed: 12/12/2022] Open
Abstract
The IL-17 family contributes to host defense against many intracellular pathogens by mechanisms that are not fully understood. CD8+ T lymphocytes are key elements against intracellular microbes, and their survival and ability to mount cytotoxic responses are orchestrated by several cytokines. Here, we demonstrated that IL-17RA-signaling cytokines sustain pathogen-specific CD8+ T cell immunity. The absence of IL-17RA and IL-17A/F during Trypanosoma cruzi infection resulted in increased tissue parasitism and reduced frequency of parasite-specific CD8+ T cells. Impaired IL-17RA-signaling in vivo increased apoptosis of parasite-specific CD8+ T cells, while in vitro recombinant IL-17 down-regulated the pro-apoptotic protein BAD and promoted the survival of activated CD8+ T cells. Phenotypic, functional, and transcriptomic profiling showed that T. cruzi-specific CD8+ T cells derived from IL-17RA-deficient mice presented features of cell dysfunction. PD-L1 blockade partially restored the magnitude of CD8+ T cell responses and parasite control in these mice. Adoptive transfer experiments established that IL-17RA-signaling is intrinsically required for the proper maintenance of functional effector CD8+ T cells. Altogether, our results identify IL-17RA and IL-17A as critical factors for sustaining CD8+ T cell immunity to T. cruzi.
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Affiliation(s)
- Jimena Tosello Boari
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Cintia L. Araujo Furlan
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Facundo Fiocca Vernengo
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Constanza Rodriguez
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - María C. Ramello
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - María C. Amezcua Vesely
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Melisa Gorosito Serrán
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Nicolás G. Nuñez
- SiRIC TransImm “Translational Immunotherapy Team,” Translational Research Department, Research Center, PSL Research University, INSERM U932, Institut Curie, Paris, France
- Centre d'Investigation Clinique Biothérapie CICBT 1428, Institut Curie, Paris, France
| | - Wilfrid Richer
- SiRIC TransImm “Translational Immunotherapy Team,” Translational Research Department, Research Center, PSL Research University, INSERM U932, Institut Curie, Paris, France
- Centre d'Investigation Clinique Biothérapie CICBT 1428, Institut Curie, Paris, France
| | - Eliane Piaggio
- SiRIC TransImm “Translational Immunotherapy Team,” Translational Research Department, Research Center, PSL Research University, INSERM U932, Institut Curie, Paris, France
- Centre d'Investigation Clinique Biothérapie CICBT 1428, Institut Curie, Paris, France
| | - Carolina L. Montes
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Adriana Gruppi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Eva V. Acosta Rodríguez
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
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Capobianco A, Cottone L, Monno A, Manfredi AA, Rovere-Querini P. The peritoneum: healing, immunity, and diseases. J Pathol 2017; 243:137-147. [PMID: 28722107 DOI: 10.1002/path.4942] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/06/2017] [Accepted: 07/02/2017] [Indexed: 12/13/2022]
Abstract
The peritoneum defines a confined microenvironment, which is stable under normal conditions, but is exposed to the damaging effect of infections, surgical injuries, and other neoplastic and non-neoplastic events. Its response to damage includes the recruitment, proliferation, and activation of a variety of haematopoietic and stromal cells. In physiological conditions, effective responses to injuries are organized; inflammatory triggers are eliminated; inflammation quickly abates; and the normal tissue architecture is restored. However, if inflammatory triggers are not cleared, fibrosis or scarring occurs and impaired tissue function ultimately leads to organ failure. Autoimmune serositis is characterized by the persistence of self-antigens and a relapsing clinical pattern. Peritoneal carcinomatosis and endometriosis are characterized by the persistence of cancer cells or ectopic endometrial cells in the peritoneal cavity. Some of the molecular signals orchestrating the recruitment of inflammatory cells in the peritoneum have been identified in the last few years. Alternative activation of peritoneal macrophages was shown to guide angiogenesis and fibrosis, and could represent a novel target for molecular intervention. This review summarizes current knowledge of the alterations to the immune response in the peritoneal environment, highlighting the ambiguous role played by persistently activated reparative macrophages in the pathogenesis of common human diseases. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Annalisa Capobianco
- San Raffaele Scientific Institute, Division of Immunology, Transplantation, and Infectious Diseases, Milan, Italy
| | - Lucia Cottone
- San Raffaele Scientific Institute, Division of Immunology, Transplantation, and Infectious Diseases, Milan, Italy.,University College London, Genetics and Cell Biology of Sarcoma Group, London, UK
| | - Antonella Monno
- San Raffaele Scientific Institute, Division of Immunology, Transplantation, and Infectious Diseases, Milan, Italy
| | - Angelo A Manfredi
- San Raffaele Scientific Institute, Division of Immunology, Transplantation, and Infectious Diseases, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Patrizia Rovere-Querini
- San Raffaele Scientific Institute, Division of Immunology, Transplantation, and Infectious Diseases, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
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13
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Li X, Ding Y, Zi M, Sun L, Zhang W, Chen S, Xu Y. CD19, from bench to bedside. Immunol Lett 2017; 183:86-95. [DOI: 10.1016/j.imlet.2017.01.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 01/19/2017] [Accepted: 01/20/2017] [Indexed: 12/27/2022]
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14
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Lobo PI. Role of Natural Autoantibodies and Natural IgM Anti-Leucocyte Autoantibodies in Health and Disease. Front Immunol 2016; 7:198. [PMID: 27375614 PMCID: PMC4893492 DOI: 10.3389/fimmu.2016.00198] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 05/06/2016] [Indexed: 11/13/2022] Open
Abstract
We review how polyreactive natural IgM autoantibodies (IgM-NAA) protect the host from invading micro-organisms and host neo-antigens that are constantly being produced by oxidation mechanisms and cell apoptosis. Second, we discuss how IgM-NAA and IgM anti-leukocyte antibodies (IgM-ALA) inhibits autoimmune inflammation by anti-idiotypic mechanisms, enhancing removal of apoptotic cells, masking neo-antigens, and regulating the function of dendritic cells (DC) and effector cells. Third, we review how natural IgM prevents autoimmune disorders arising from pathogenic IgG autoantibodies, triggered by genetic mechanisms (e.g., SLE) or micro-organisms, as well as by autoreactive B and T cells that have escaped tolerance mechanisms. Studies in IgM knockout mice have clearly demonstrated that regulatory B and T cells require IgM to effectively regulate inflammation mediated by innate, adaptive, and autoimmune mechanisms. It is, therefore, not surprising why the host positively selects such autoreactive B1 cells that generate IgM-NAA, which are also evolutionarily conserved. Fourth, we show that IgM-ALA levels and their repertoire can vary in normal humans and disease states and this variation may partly explain the observed differences in the inflammatory response after infection, ischemic injury, or after a transplant. We also show how protective IgM-NAA can be rendered pathogenic under non-physiological conditions. We also review IgG-NAA that are more abundant than IgM-NAA in plasma. However, we need to understand if the (Fab)(2) region of IgG-NAA has physiological relevance in non-disease states, as in plasma, their functional activity is blocked by IgM-NAA having anti-idiotypic activity. Some IgG-NAA are produced by B2 cells that have escaped tolerance mechanisms and we show how such pathogenic IgG-NAA are regulated to prevent autoimmune disease. The Fc region of IgG-NAA can influence inflammation and B cell function in vivo by binding to activating and inhibitory FcγR. IgM-NAA has therapeutic potential. Polyclonal IgM infusions can be used to abrogate on-going inflammation. Additionally, inflammation arising after ischemic kidney injury, e.g., during high-risk elective cardiac surgery or after allograft transplantation, can be prevented by pre-emptively infusing polyclonal IgM or DC pretreated ex vivo with IgM or by increasing in vivo IgM with a vaccine approach. Cell therapy is appealing as less IgM will be required.
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Affiliation(s)
- Peter Isaac Lobo
- Department of Internal Medicine, Division of Nephrology, Center of Immunology, Inflammation and Regenerative Medicine, University of Virginia Health Center, Charlottesville, VA, USA
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15
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Wang X, Ma K, Chen M, Ko KH, Zheng BJ, Lu L. IL-17A Promotes Pulmonary B-1a Cell Differentiation via Induction of Blimp-1 Expression during Influenza Virus Infection. PLoS Pathog 2016; 12:e1005367. [PMID: 26735852 PMCID: PMC4703366 DOI: 10.1371/journal.ppat.1005367] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/04/2015] [Indexed: 12/11/2022] Open
Abstract
B-1 cells play a critical role in early protection during influenza infections by producing natural IgM antibodies. However, the underlying mechanisms involved in regulating this process are largely unknown. Here we found that during influenza infection pleural cavity B-1a cells rapidly infiltrated lungs, where they underwent plasmacytic differentiation with enhanced IgM production. This process was promoted by IL-17A signaling via induction of Blimp-1 expression and NF-κB activation in B-1a cells. Deficiency of IL-17A led to severely impaired B-1a-derived antibody production in the respiratory tract, resulting in a deficiency in viral clearance. Transfer of B-1a-derived natural antibodies rescued Il17a-/- mice from otherwise lethal infections. Together, we identify a critical function of IL-17A in promoting the plasmacytic differentiation of B-1a cells. Our findings provide new insights into the mechanisms underlying the regulation of pulmonary B-1a cell response against influenza infection. Influenza infection is highly localized in respiratory tract where immune response is triggered to provide protection from primary infection. Although natural IgM antibodies produced by B-1a cells have long been recognized as first-line protection against influenza, it remains unclear whether B-1a cell response occurs in the lung and what molecular mechanisms regulate this process. We show that airway exposure to influenza causes migration of B-1a cells to lungs for further differentiation into plasma cells with enhanced production of protective IgM antibodies. IL-17A critically regulates this process by driving differentiation of B-1a cells to high-rate IgM producing plasma cells in situ. Thus, IL-17A is a key factor in the local inflammatory milieu that modulates early humoral immunity afforded by B-1a cells.
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Affiliation(s)
- Xiaohui Wang
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
| | - Kongyang Ma
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
| | - Miao Chen
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
| | - King-Hung Ko
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
| | - Bo-Jian Zheng
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
| | - Liwei Lu
- Department of Pathology and Center of Infection and Immunology, The University of Hong Kong, Hong Kong, China
- * E-mail:
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Increased NHC Cells in the Peritoneal Cavity of Plasmacytoma Susceptible BALB/c Mouse. Mediators Inflamm 2015; 2015:313140. [PMID: 26504358 PMCID: PMC4609491 DOI: 10.1155/2015/313140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 01/05/2015] [Indexed: 11/18/2022] Open
Abstract
BALB/c strain mice are unique in that they develop murine plasmacytoma (MPC) as a consequence of the inflammation induced by pristane oil injection in the peritoneal cavity. In this work the Treg, Th17, B1, B2, and NHC lymphocyte populations from the peritoneal environment of BALB/c, the susceptible strain, and C57BL/6 mice, which do not develop MPC after oil treatment, were studied. Both oil-treated strains showed decreased levels of Th17 lymphocytes, no significant variation in Treg lymphocytes, and a drastic decrease of all B lymphocyte populations. However, only oil-induced BALB/c showed increased levels of natural helper cells (NHC) which could be important in the myeloma induction.
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BAFF-driven autoimmunity requires CD19 expression. J Autoimmun 2015; 62:1-10. [DOI: 10.1016/j.jaut.2015.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 11/19/2022]
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Vuyyuru R, Shen S, Manser T. Testing the role of the FcγRIIB immunoreceptor tyrosine-based inhibitory motif in regulation of the B cell immune response. IMMUNITY INFLAMMATION AND DISEASE 2015; 3:247-64. [PMID: 26417440 PMCID: PMC4578524 DOI: 10.1002/iid3.64] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/09/2015] [Accepted: 04/25/2015] [Indexed: 01/07/2023]
Abstract
In vitro studies have demonstrated that the immunoreceptor tyrosine-based inhibitory motif (ITIM) of the inhibitory Fc receptor FcγRIIB is critical for mediating attenuation of signaling via immunoreceptor tyrosine-based activation motif (ITAM) containing receptors, such as the B cell antigen receptor (BCR), when FcγRIIB is co-cross-linked to these activation receptors. To test the role of the FcγRIIB ITIM motif in regulation of the B cell immune response in vivo, we constructed lines of transgenic mice expressing a form of FcγRIIB with an inactivating tyrosine (Y) to phenylalanine (F) mutation in the ITIM motif. Detailed studies of one of these lines, in which the mutant FcγRIIB was expressed on B cells and other cell types that normally express this receptor, were performed. No quantitative differences in germinal center (GC) B cell responses were observed between the mutant FcγRIIB transgenic line and control mice. However, serum antibody and antibody forming cell responses were often observed to be elevated in the ITIM mutant FcγRIIB transgenic mice as compared to controls, though not to the same extent as mice deficient in expression of FcγRIIB. Moreover, primary B cells from the ITIM mutant FcγRIIB line did not display the same level of augmented BCR signaling as primary FcγRIIB deficient B cells under conditions inducing co-cross-linking of FcγRIIB and the BCR. In total, these data suggest that a functional ITIM motif is not required for all in vivo inhibitory activity of this receptor. However, we also found that the transgenic ITIM mutant FcγRIIB receptor was expressed at abnormal levels in several hematopoietic lineages. Thus, confirmation of our findings will require the generation and analysis of mice in which an ITIM mutant form of FcγRIIB is expressed in vivo as is the endogenous receptor.
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Affiliation(s)
- Raja Vuyyuru
- Department of Microbiology and Immunology, Thomas Jefferson University Philadelphia, PA, USA
| | - Shixue Shen
- Department of Microbiology and Immunology, Thomas Jefferson University Philadelphia, PA, USA
| | - Tim Manser
- Department of Microbiology and Immunology, Thomas Jefferson University Philadelphia, PA, USA
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Müller J, Lunz B, Schwab I, Acs A, Nimmerjahn F, Daniel C, Nitschke L. Siglec-G Deficiency Leads to Autoimmunity in Aging C57BL/6 Mice. THE JOURNAL OF IMMUNOLOGY 2015; 195:51-60. [PMID: 25987743 DOI: 10.4049/jimmunol.1403139] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 04/20/2015] [Indexed: 01/06/2023]
Abstract
Siglec-G, a member of the sialic acid-binding Ig-like lectin (Siglec) family, is expressed on B cell and dendritic cell surfaces. It acts as an inhibitory coreceptor and modulates B cell activation, especially on B1 cells, as Siglec-G-deficient mice show mainly a B1 cell-restricted phenotype resulting in increased B1 cell numbers. Although higher B1 cell numbers are discussed to be associated with autoimmunity, loss of Siglec-G does not result in autoimmune disease in BALB/c mice. However, there is evidence from Siglec-G × CD22 double-deficient mice and Siglec-G(-/-) mice on an autoimmune-prone MRL/lpr background that Siglec-G is important to maintain tolerance in B cells. In this study, we analyzed the role of Siglec-G in induction and maintenance of B cell tolerance on C57BL/6 background and in the FcγRIIb-deficient background. We find that aging Siglec-G-deficient and Siglec-G × FcγRIIb double-deficient mice develop an autoimmune phenotype with elevated autoantibody levels and mild glomerulonephritis. Aging Siglec-G-deficient mice have elevated numbers of plasma cells and germinal center B cells, as well as a higher number of activated CD4 T cells, which likely all contribute to autoantibody production. Additional loss of the inhibitory receptor FcγRIIb in Siglec-G(-/-) mice does not result in exacerbation of disease. These results indicate that Siglec-G is important to maintain tolerance in B cells and prevent autoimmunity.
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Affiliation(s)
- Jennifer Müller
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
| | - Benjamin Lunz
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
| | - Inessa Schwab
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
| | - Andreas Acs
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
| | - Christoph Daniel
- Department of Nephropathology, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Lars Nitschke
- Division of Genetics, Department of Biology, University of Erlangen, 91058 Erlangen, Germany; and
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Abstract
The initiation and perpetuation of autoimmunity recognize numerous checkpoints, from the genomic susceptibility to the breakdown of tolerance. This latter phenomenon includes the loss of B cell anergy and T regulatory cell failure, as well as the production of autoantibodies and autoreactive T cells. These mechanisms ultimately lead to tissue injury via different mechanisms that span from the production of proinflammatory cytokines to the chemotaxis of immune cells to the target sites. The pathways to autoimmunity have been widely investigated over the past year and resulted in a number of articles in peer-reviewed journals that has increased by nearly 10 % compared to 2011. We herein follow on the attempt to provide a brief discussion of the majority of articles on autoimmune diseases that were published in the major immunology journals in the previous solar year. The selection is necessarily arbitrary and may thus not be seen as comprehensive but reflects current research trends. Indeed, 2012 articles were mostly dedicated to define new and old mechanisms with potential therapeutic implications in autoimmunity in general, though based on specific clinical conditions or animal models. As paradigmatic examples, the environmental influence on autoimmunity, Th17 changes modulating the autoimmune response, serum autoantibodies and B cell changes as biomarkers and therapeutic targets were major issues addressed by experimental articles in 2012. Further, a growing number of studies investigated the sex bias of autoimmunity and supported different working hypotheses to explain the female predominance, including sex chromosome changes and reproductive life factors. In conclusion, the resulting scenario illustrates that common factors may underlie different autoimmune diseases and this is well represented by the observed alterations in interferon-α and TGFβ or by the shared signaling pathways.
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Affiliation(s)
- Carlo Selmi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy,
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21
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Sindhava VJ, Scholz JL, Stohl W, Cancro MP. APRIL mediates peritoneal B-1 cell homeostasis. Immunol Lett 2014; 160:120-7. [PMID: 24512739 DOI: 10.1016/j.imlet.2014.01.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 01/31/2014] [Indexed: 01/13/2023]
Abstract
BLyS (B lymphocyte stimulator) family cytokines and receptors play key roles in B-2 cell maturation and survival, but their importance for B-1 cells remains less clear. Here we use knockout mice to show that APRIL (A proliferation-inducing ligand), but not BLyS, plays a role in peritoneal B-1 cell maintenance. APRIL likely exerts its effects on peritoneal B-1 cells through binding to HSPG (heparan sulfate proteoglycans) rather than to the TACI (transmembrane activator and cyclophilin ligand interactor) receptor. Finally, we show that peritoneal macrophages express high levels of APRIL message, and are a likely local source of the cytokine in this anatomic locale.
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Affiliation(s)
- Vishal J Sindhava
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6082, United States
| | - Jean L Scholz
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6082, United States
| | - William Stohl
- Division of Rheumatology, University of Southern California Keck School of Medicine, Los Angeles, CA 90033, United States
| | - Michael P Cancro
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6082, United States.
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22
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Lamagna C, Hu Y, DeFranco AL, Lowell CA. B cell-specific loss of Lyn kinase leads to autoimmunity. THE JOURNAL OF IMMUNOLOGY 2013; 192:919-28. [PMID: 24376269 DOI: 10.4049/jimmunol.1301979] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The Lyn tyrosine kinase regulates inhibitory signaling in B and myeloid cells: loss of Lyn results in a lupus-like autoimmune disease with hyperactive B cells and myeloproliferation. We have characterized the relative contribution of Lyn-regulated signaling pathways in B cells specifically to the development of autoimmunity by crossing the novel lyn(flox/flox) animals with mice carrying the Cre recombinase under the control of the Cd79a promoter, resulting in deletion of Lyn in B cells. The specific deletion of Lyn in B cells is sufficient for the development of immune complex-mediated glomerulonephritis. The B cell-specific Lyn-deficient mice have no defects in early bone marrow B cell development but have reduced numbers of mature B cells with poor germinal centers, as well as increased numbers of plasma and B1a cells, similar to the lyn(-/-) animals. Within 8 mo of life, B cell-specific Lyn mutant mice develop high titers of IgG anti-Smith Ag ribonucleoprotein and anti-dsDNA autoantibodies, which deposit in their kidneys, resulting in glomerulonephritis. B cell-specific Lyn mutant mice also develop myeloproliferation, similar to the lyn(-/-) animals. The additional deletion of MyD88 in B cells, achieved by crossing lyn(flox/flox)Cd79a-cre mice with myd88(flox/flox) animals, reversed the autoimmune phenotype observed in B cell-specific Lyn-deficient mice by blocking production of class-switched pathogenic IgG autoantibodies. Our results demonstrate that B cell-intrinsic Lyn-dependent signaling pathways regulate B cell homeostasis and activation, which in concert with B cell-specific MyD88 signaling pathways can drive the development of autoimmune disease.
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Affiliation(s)
- Chrystelle Lamagna
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143
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23
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Zhang Y, Wang JY, Han W. A role for CMTM7 in BCR expression and survival in B-1a but not B-2 cells. Int Immunol 2013; 26:47-57. [PMID: 24080084 DOI: 10.1093/intimm/dxt042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
B-1 cells are an important cell population for the production of natural antibodies and front-line host defense. Here, we show that the MARVEL-domain-containing membrane protein CMTM7 (CKLF-like MARVEL transmembrane domain-containing 7) plays a critical role in BCR expression and survival in B-1a cells. We analyzed lymphocyte development in Rag1⁻/⁻ mice reconstituted with Cmtm7(flox/⁺) fetal liver cells because of the unexpected lethality of the Cmtm7(flox/⁺) heterozygotes. We found a mild reduction of serum IgM and a significantly reduced B-1a population in the peritoneal cavity of Rag1⁻/⁻ mice reconstituted with Cmtm7(flox/⁺) cells compared with those reconstituted with wild-type (WT) cells. The reduction of B-1a cells in Cmtm7(flox/⁺) mice was associated with reduced BCR expression and increased spontaneous cell death in these cells. In addition, both B-1a and B-1b cells derived from Cmtm7(flox/⁺) fetal liver cells contained a lower frequency of cells capable of spontaneously differentiating into IgM-secreting plasma cells than did those derived from WT fetal liver cells. Furthermore, Cmtm7(flox/⁺) B-1a and B-1b cells responded poorly to LPS-induced proliferation. In striking contrast to the defects in B-1 cells, Cmtm7(flox/⁺) B-2 cells did not show obvious abnormalities when compared with WT B-2 cells. These results demonstrate a specific role for CMTM7 in BCR expression and survival in B-1a cells.
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Affiliation(s)
- Yanfei Zhang
- Peking University Center for Human Disease Genomics, Department of Immunology, Key Laboratory of Medical Immunology, Ministry of Health, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China
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24
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Panchanathan R, Choubey D. Murine BAFF expression is up-regulated by estrogen and interferons: implications for sex bias in the development of autoimmunity. Mol Immunol 2012; 53:15-23. [PMID: 22784990 DOI: 10.1016/j.molimm.2012.06.013] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 06/15/2012] [Indexed: 11/16/2022]
Abstract
Systemic lupus erythematosus (SLE) in patients and certain mouse models exhibits a strong sex bias. Additionally, in most patients, increased serum levels of type I interferon (IFN-α) are associated with severity of the disease. Because increased levels of B cell activating factor (BAFF) in SLE patients and mouse models are associated with the development of SLE, we investigated whether the female sex hormone estrogen (E2) and/or IFNs (IFN-α or γ) could regulate the expression of murine BAFF. We found that steady-state levels of BAFF mRNA and protein were measurably higher in immune cells (CD11b(+), CD11c(+), and CD19(+)) isolated from C57BL/6 females than the age-matched male mice. Treatment of immune cells with IFN or E2 significantly increased levels of BAFF mRNA and protein and a deficiency of estrogen receptor-α, IRF5, or STAT1 expression in splenic cells decreased expression of BAFF. Moreover, treatment of RAW264.7 macrophage cells with IFN-α, IFN-γ, or E2 induced expression of BAFF. Interestingly, increased expression of p202, an IFN and estrogen-inducible protein, in RAW264.7 cells significantly increased the expression levels of BAFF and also stimulated the activity of the BAFF-luc-reporter. Accordingly, the increased expression of the p202 protein in lupus-prone B6.Nba2-ABC than non lupus-prone C57BL/6 and B6.Nba2-C female mice was associated with increased expression levels of BAFF. Together, our observations demonstrated that estrogen and IFN-induced increased levels of the p202 protein in immune cells contribute to sex bias in part through up-regulation of BAFF expression.
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Affiliation(s)
- Ravichandran Panchanathan
- Department of Environmental Health, University of Cincinnati, 3223 Eden Avenue, P.O. Box-670056, Cincinnati, OH 45267, United States
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