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Abstract
PURPOSE OF REVIEW Recent studies indicate a role for immune dysregulation in the pathogenesis of multiple sclerosis, an inflammatory demyelinating and degenerative disease of the central nervous system. This review addresses the current mechanisms of immune dysregulation in the development of multiple sclerosis, including the impact of environmental risk factors on immunity in both multiple sclerosis and its animal models. RECENT FINDINGS CD4 T-helper (Th) cells have long been implicated as the main drivers of pathogenesis of multiple sclerosis. However, current studies indicate that multiple sclerosis is largely a heterogeneous disease process, which involves both innate and adaptive immune-mediated inflammatory mechanisms that ultimately contribute to demyelination and neurodegeneration. Therefore, B cells, CD8 T cells, and microglia/macrophages can also play an important role in the immunopathogenesis of multiple sclerosis apart from proinflammatory CD4 Th1/Th17 cell subsets. Furthermore, increasing evidence indicates that environmental risk factors, such as Vitamin D deficiency, Epstein-Barr virus, smoking, Western diet, and the commensal microbiota, influence the development of multiple sclerosis through interactions with genetic variants of multiple sclerosis, thus leading to the dysregulation of immune responses. SUMMARY A better understanding of immune-mediated mechanisms in the pathogenesis of multiple sclerosis and the contribution of environmental risk factors toward the development of multiple sclerosis will help further improve therapeutic approaches to prevent disease progression.
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252
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Li R, Rezk A, Healy LM, Muirhead G, Prat A, Gommerman JL, Bar-Or A. Cytokine-Defined B Cell Responses as Therapeutic Targets in Multiple Sclerosis. Front Immunol 2016; 6:626. [PMID: 26779181 PMCID: PMC4705194 DOI: 10.3389/fimmu.2015.00626] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/30/2015] [Indexed: 02/04/2023] Open
Abstract
Important antibody-independent pathogenic roles of B cells are emerging in autoimmune diseases, including multiple sclerosis (MS). The contrasting results of different treatments targeting B cells in patients (in spite of predictions of therapeutic benefits from animal models) call for a better understanding of the multiple roles that distinct human B cell responses likely play in MS. In recent years, both murine and human B cells have been identified with distinct functional properties related to their expression of particular cytokines. These have included regulatory (Breg) B cells (secreting interleukin (IL)-10 or IL-35) and pro-inflammatory B cells (secreting tumor necrosis factor α, LTα, IL-6, and granulocyte macrophage colony-stimulating factor). Better understanding of human cytokine-defined B cell responses is necessary in both health and diseases, such as MS. Investigation of their surface phenotype, distinct functions, and the mechanisms of regulation (both cell intrinsic and cell extrinsic) may help develop effective treatments that are more selective and safe. In this review, we focus on mechanisms by which cytokine-defined B cells contribute to the peripheral immune cascades that are thought to underlie MS relapses, and the impact of B cell-directed therapies on these mechanisms.
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Affiliation(s)
- Rui Li
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University , Montreal, QC , Canada
| | - Ayman Rezk
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University , Montreal, QC , Canada
| | - Luke M Healy
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University , Montreal, QC , Canada
| | - Gillian Muirhead
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University , Montreal, QC , Canada
| | - Alexandre Prat
- Neuroimmunology Unit, Department of Neuroscience, Centre de Recherche du CHUM (CRCHUM), Université de Montreal , Montreal, QC , Canada
| | | | - Amit Bar-Or
- Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada; Experimental Therapeutics Program, Montreal Neurological Institute and Hospital, McGill University, Montreal, QC, Canada
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253
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Claes N, Fraussen J, Stinissen P, Hupperts R, Somers V. B Cells Are Multifunctional Players in Multiple Sclerosis Pathogenesis: Insights from Therapeutic Interventions. Front Immunol 2015; 6:642. [PMID: 26734009 PMCID: PMC4685142 DOI: 10.3389/fimmu.2015.00642] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 12/07/2015] [Indexed: 01/07/2023] Open
Abstract
Multiple sclerosis (MS) is a severe disease of the central nervous system (CNS) characterized by autoimmune inflammation and neurodegeneration. Historically, damage to the CNS was thought to be mediated predominantly by activated pro-inflammatory T cells. B cell involvement in the pathogenesis of MS was solely attributed to autoantibody production. The first clues for the involvement of antibody-independent B cell functions in MS pathology came from positive results in clinical trials of the B cell-depleting treatment rituximab in patients with relapsing-remitting (RR) MS. The survival of antibody-secreting plasma cells and decrease in T cell numbers indicated the importance of other B cell functions in MS such as antigen presentation, costimulation, and cytokine production. Rituximab provided us with an example of how clinical trials can lead to new research opportunities concerning B cell biology. Moreover, analysis of the antibody-independent B cell functions in MS has gained interest since these trials. Limited information is present on the effects of current immunomodulatory therapies on B cell functions, although effects of both first-line (interferon, glatiramer acetate, dimethyl fumarate, and teriflunomide), second-line (fingolimod, natalizumab), and even third-line (monoclonal antibody therapies) treatments on B cell subtype distribution, expression of functional surface markers, and secretion of different cytokines by B cells have been studied to some extent. In this review, we summarize the effects of different MS-related treatments on B cell functions that have been described up to now in order to find new research opportunities and contribute to the understanding of the pathogenesis of MS.
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Affiliation(s)
- Nele Claes
- Hasselt University, Biomedical Research Institute and Transnationale Universiteit Limburg, School of Life Sciences , Diepenbeek , Belgium
| | - Judith Fraussen
- Hasselt University, Biomedical Research Institute and Transnationale Universiteit Limburg, School of Life Sciences , Diepenbeek , Belgium
| | - Piet Stinissen
- Hasselt University, Biomedical Research Institute and Transnationale Universiteit Limburg, School of Life Sciences , Diepenbeek , Belgium
| | - Raymond Hupperts
- Department of Neuroscience, School of Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands; Department of Neurology, Academic MS Center Limburg, Zuyderland Medisch Centrum, Sittard, Netherlands
| | - Veerle Somers
- Hasselt University, Biomedical Research Institute and Transnationale Universiteit Limburg, School of Life Sciences , Diepenbeek , Belgium
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254
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Drutskaya MS, Nosenko MA, Atretkhany KSN, Efimov GA, Nedospasov SA. Interleukin-6: From molecular mechanisms of signal transduction to physiological properties and therapeutic targeting. Mol Biol 2015. [DOI: 10.1134/s0026893315060060] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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255
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B cells from relapsing remitting multiple sclerosis patients support neuro-antigen-specific Th17 responses. J Neuroimmunol 2015; 291:46-53. [PMID: 26857494 DOI: 10.1016/j.jneuroim.2015.11.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/21/2015] [Accepted: 11/23/2015] [Indexed: 12/21/2022]
Abstract
B cells are highly potent antigen presenting cells of their cognate antigens. However, it remains unknown whether B cells can orchestrate Th17-mediated responses against neuro-antigens. We report that MS patients and healthy donors had a similar frequency of antigen-specific Th1 and Th17 cells, and distribution of T effector and T central memory cells. Notwithstanding these similarities, the application of an in vitro assay demonstrated that the B cells derived from a subset of MS patients exhibited the capability of coordinating Th17 responses directed toward neuro-antigens. These observations underscore the B cell's contribution to the putative underpinnings of multiple sclerosis.
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256
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Willis SN, Stathopoulos P, Chastre A, Compton SD, Hafler DA, O'Connor KC. Investigating the Antigen Specificity of Multiple Sclerosis Central Nervous System-Derived Immunoglobulins. Front Immunol 2015; 6:600. [PMID: 26648933 PMCID: PMC4663633 DOI: 10.3389/fimmu.2015.00600] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/09/2015] [Indexed: 12/25/2022] Open
Abstract
The central nervous system (CNS) of patients with multiple sclerosis (MS) is the site where disease pathology is evident. Damaged CNS tissue is commonly associated with immune cell infiltration. This infiltrate often includes B cells that are found in multiple locations throughout the CNS, including the cerebrospinal fluid (CSF), parenchyma, and the meninges, frequently forming tertiary lymphoid structures in the latter. Several groups, including our own, have shown that B cells from distinct locations within the MS CNS are clonally related and display the characteristics of an antigen-driven response. However, the antigen(s) driving this response have yet to be conclusively defined. To explore the antigen specificity of the MS B cell response, we produced recombinant human immunoglobulin (rIgG) from a series of expanded B cell clones that we isolated from the CNS tissue of six MS brains. The specificity of these MS-derived rIgG and control rIgG derived from non-MS tissues was then examined using multiple methodologies that included testing individual candidate antigens, screening with high-throughput antigen arrays and evaluating binding to CNS-derived cell lines. We report that while several MS-derived rIgG recognized particular antigens, including neurofilament light and a protocadherin isoform, none were unique to MS, as non-MS-derived rIgG used as controls invariably displayed similar binding specificities. We conclude that while MS CNS resident B cells display the characteristics of an antigen-driven B cell response, the antigen(s) driving this response remain at large.
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Affiliation(s)
- Simon N Willis
- Department of Neurology, Yale School of Medicine , New Haven, CT , USA ; Walter and Eliza Hall Institute of Medical Research , Parkville, VIC , Australia ; Department of Medical Biology, University of Melbourne , Parkville, VIC , Australia
| | | | - Anne Chastre
- Department of Neurology, Yale School of Medicine , New Haven, CT , USA
| | - Shannon D Compton
- Department of Neurology, Yale School of Medicine , New Haven, CT , USA
| | - David A Hafler
- Department of Neurology, Yale School of Medicine , New Haven, CT , USA ; Department of Immunobiology, Yale School of Medicine , New Haven, CT , USA
| | - Kevin C O'Connor
- Department of Neurology, Yale School of Medicine , New Haven, CT , USA
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257
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Braza F, Chesne J, Durand M, Dirou S, Brosseau C, Mahay G, Cheminant MA, Magnan A, Brouard S. A regulatory CD9(+) B-cell subset inhibits HDM-induced allergic airway inflammation. Allergy 2015. [PMID: 26194936 DOI: 10.1111/all.12697] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Exposure to respiratory allergens triggers airway hyperresponsiveness and inflammation characterized by the expansion of TH 2 cells and the production of allergen specific IgE. Allergic asthma is characterized by an alteration in immune regulatory mechanisms leading to an imbalance between pro- and anti-inflammatory components of the immune system. AIMS Recently B cells have been described as central regulators of exacerbated inflammation, notably in the case of autoimmunity. However, to what extent these cells can regulate airway inflammation and asthma remains to be elucidated. MATERIALS & METHODS We took advantage of a allergic asthma model in mice induced by percutaneous sensitization and respiratory challenge with an extract of house dust mite. RESULTS In this study, we showed that the induction of allergic asthma alters the homeostasis of IL-10(+) Bregs and favors the production of inflammatory cytokines by B cells. Deeper transcriptomic and phenotypic analysis of Bregs revealed that they were enriched in a CD9(+) B cell subset. In asthmatic mice the adoptive transfer of CD9(+) B cells normalized airway inflammation and lung function by inhibiting TH 2- and TH 17-driven inflammation in an IL-10-dependent manner, restoring a favorable immunological balance in lung tissues. Indeed we further showed that injection of CD9(+) Bregs controls the expansion of lung effector T cells allowing the establishment of a favorable regulatory T cells/effector T cells ratio in lungs. CONCLUSION This finding strengthens the potential for Breg-targeted therapies in allergic asthma.
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Affiliation(s)
- F. Braza
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
- INSERM; UMR 1064; Nantes France
- CHU de Nantes; ITUN; Nantes France
- CIC biothérapie; Nantes France. Université de Nantes; Nantes France
| | - J. Chesne
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
- INSERM; UMR 1064; Nantes France
- CHU de Nantes; ITUN; Nantes France
- CIC biothérapie; Nantes France. Université de Nantes; Nantes France
| | - M. Durand
- INSERM; UMR 1064; Nantes France
- CHU de Nantes; ITUN; Nantes France
- CIC biothérapie; Nantes France
- Université de Nantes; Nantes France
| | - S. Dirou
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
- CHU Nantes; l'institut du thorax; Service de Pneumologie; Nantes France
| | - C. Brosseau
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
- INSERM; UMR 1064; Nantes France
- CHU de Nantes; ITUN; Nantes France
- CHU Nantes; l'institut du thorax; Service de Pneumologie; Nantes France
| | - G. Mahay
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
| | - M. A. Cheminant
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
| | - A. Magnan
- INSERM; UMR 1087; l'institut du thorax; Nantes France
- CNRS; UMR 6291; Nantes France
- Université de Nantes; Nantes France
- CHU Nantes; l'institut du thorax; Service de Pneumologie; Nantes France
| | - S. Brouard
- INSERM; UMR 1064; Nantes France
- CHU de Nantes; ITUN; Nantes France
- CIC biothérapie; Nantes France
- Université de Nantes; Nantes France
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258
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Márquez AC, Horwitz MS. The Role of Latently Infected B Cells in CNS Autoimmunity. Front Immunol 2015; 6:544. [PMID: 26579121 PMCID: PMC4623415 DOI: 10.3389/fimmu.2015.00544] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/09/2015] [Indexed: 11/16/2022] Open
Abstract
The onset of multiple sclerosis (MS) is caused by both genetic and environmental factors. Among the environmental factors, it is believed that previous infection with Epstein–Barr virus (EBV) may contribute in the development of MS. EBV has been associated with other autoimmune diseases, such as systemic lupus erythematous, and cancers like Burkitt’s lymphoma. EBV establishes a life-long latency in B cells with occasional reactivation of the virus throughout the individual’s life. The role played by B cells in MS pathology has been largely studied, yet is not clearly understood. In MS patients, Rituximab, a novel treatment that targets CD20+ B cells, has proven to have successful results in diminishing the number of relapses in remitting relapsing MS; however, the mechanism of how this drug acts has not been clearly established. In this review, we analyze the evidence of how B cells latently infected with EBV might be altering the immune system response and helping in the development of MS. We will also discuss how animal models, such as experimental autoimmune encephalomyelitis (EAE) and murine gammaherpesvirus-68 (γHV-68), can be used as powerful tools in the study of the relationship between EBV, MS, and B cells.
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Affiliation(s)
- Ana Citlali Márquez
- Department of Microbiology and Immunology, The University of British Columbia , Vancouver, BC , Canada
| | - Marc Steven Horwitz
- Department of Microbiology and Immunology, The University of British Columbia , Vancouver, BC , Canada
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259
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Khorooshi R, Asgari N, Mørch MT, Berg CT, Owens T. Hypersensitivity Responses in the Central Nervous System. Front Immunol 2015; 6:517. [PMID: 26500654 PMCID: PMC4595775 DOI: 10.3389/fimmu.2015.00517] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 09/22/2015] [Indexed: 12/29/2022] Open
Abstract
Immune-mediated tissue damage or hypersensitivity can be mediated by autospecific IgG antibodies. Pathology results from activation of complement, and antibody-dependent cellular cytotoxicity, mediated by inflammatory effector leukocytes include macrophages, natural killer cells, and granulocytes. Antibodies and complement have been associated to demyelinating pathology in multiple sclerosis (MS) lesions, where macrophages predominate among infiltrating myeloid cells. Serum-derived autoantibodies with predominant specificity for the astrocyte water channel aquaporin-4 (AQP4) are implicated as inducers of pathology in neuromyelitis optica (NMO), a central nervous system (CNS) demyelinating disease where activated neutrophils infiltrate, unlike in MS. The most widely used model for MS, experimental autoimmune encephalomyelitis, is an autoantigen-immunized disease that can be transferred to naive animals with CD4+ T cells, but not with antibodies. By contrast, NMO-like astrocyte and myelin pathology can be transferred to mice with AQP4–IgG from NMO patients. This is dependent on complement, and does not require T cells. Consistent with clinical observations that interferon-beta is ineffective as a therapy for NMO, NMO-like pathology is significantly reduced in mice lacking the Type I IFN receptor. In MS, there is evidence for intrathecal synthesis of antibodies as well as blood–brain barrier (BBB) breakdown, whereas in NMO, IgG accesses the CNS from blood. Transfer models involve either direct injection of antibody and complement to the CNS, or experimental manipulations to induce BBB breakdown. We here review studies in MS and NMO that elucidate roles for IgG and complement in the induction of BBB breakdown, astrocytopathy, and demyelinating pathology. These studies point to significance of T-independent effector mechanisms in neuroinflammation.
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Affiliation(s)
- Reza Khorooshi
- Department of Neurobiology Research, Institute for Molecular Medicine, University of Southern Denmark , Odense , Denmark
| | - Nasrin Asgari
- Department of Neurobiology Research, Institute for Molecular Medicine, University of Southern Denmark , Odense , Denmark ; Department of Neurology, Vejle Hospital , Vejle , Denmark
| | - Marlene Thorsen Mørch
- Department of Neurobiology Research, Institute for Molecular Medicine, University of Southern Denmark , Odense , Denmark
| | - Carsten Tue Berg
- Department of Neurobiology Research, Institute for Molecular Medicine, University of Southern Denmark , Odense , Denmark
| | - Trevor Owens
- Department of Neurobiology Research, Institute for Molecular Medicine, University of Southern Denmark , Odense , Denmark
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260
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Lee Y, Mitsdoerffer M, Xiao S, Gu G, Sobel RA, Kuchroo VK. IL-21R signaling is critical for induction of spontaneous experimental autoimmune encephalomyelitis. J Clin Invest 2015; 125:4011-20. [PMID: 26413871 DOI: 10.1172/jci75933] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 08/17/2015] [Indexed: 01/12/2023] Open
Abstract
IL-17-producing CD4+ T cells (Th17 cells) have well-described pathogenic roles in tissue inflammation and autoimmune diseases, such as experimental autoimmune encephalomyelitis (EAE); however, the involvement of IL-21 in these processes has remained controversial. While IL-21 is an essential autocrine amplification factor for differentiation of Th17 cells, the loss of IL-21 or IL-21 receptor (IL-21R) does not protect mice from actively induced EAE. Here, we utilized a transgenic EAE mouse model, in which T and B cells overexpress receptors for myelin oligodendrocyte glycoprotein (MOG) (referred to as 2D2xTH mice), and demonstrated that IL-21 is critical for the development of a variant form of spontaneous EAE in these animals. Il21r deletion in 2D2xTH mice reduced the incidence and severity of spontaneous EAE, which was associated with a defect in Th17 cell generation. Moreover, IL-21R deficiency limited IL-23R expression on Th17 cells and inhibited expression of key molecules involved in the generation of pathogenic Th17 cells. Conversely, loss of IL-23R in 2D2xTH mice resulted in complete resistance to the development of spontaneous EAE. Our data identify a previously unappreciated role for IL-21 in EAE and reveal that IL-21-mediated signaling supports generation and stabilization of pathogenic Th17 cells and development of spontaneous autoimmunity.
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MESH Headings
- Animals
- Antigen Presentation
- Cells, Cultured
- Disease Susceptibility
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Encephalomyelitis, Autoimmune, Experimental/physiopathology
- Interferon-gamma/biosynthesis
- Interferon-gamma/genetics
- Interleukin-21 Receptor alpha Subunit/deficiency
- Interleukin-21 Receptor alpha Subunit/genetics
- Interleukin-21 Receptor alpha Subunit/physiology
- Interleukins/physiology
- Lymphocyte Activation
- Lymphopoiesis
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Myelin-Oligodendrocyte Glycoprotein/immunology
- Peptide Fragments/immunology
- Receptors, Interleukin/biosynthesis
- Receptors, Interleukin/deficiency
- Receptors, Interleukin/genetics
- Signal Transduction
- Specific Pathogen-Free Organisms
- Th17 Cells/immunology
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261
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Dang AK, Tesfagiorgis Y, Jain RW, Craig HC, Kerfoot SM. Meningeal Infiltration of the Spinal Cord by Non-Classically Activated B Cells is Associated with Chronic Disease Course in a Spontaneous B Cell-Dependent Model of CNS Autoimmune Disease. Front Immunol 2015; 6:470. [PMID: 26441975 PMCID: PMC4584934 DOI: 10.3389/fimmu.2015.00470] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/31/2015] [Indexed: 12/01/2022] Open
Abstract
We characterized B cell infiltration of the spinal cord in a B cell-dependent spontaneous model of central nervous system (CNS) autoimmunity that develops in a proportion of mice with mutant T and B cell receptors specific for myelin oligodendrocyte glycoprotein. We found that, while males are more likely to develop disease, females are more likely to have a chronic rather than monophasic disease course. B cell infiltration of the spinal cord was investigated by histology and FACs. CD4+ T cell infiltration was pervasive throughout the white and in some cases gray matter. B cells were almost exclusively restricted to the meninges, often in clusters reminiscent of those described in human multiple sclerosis. These clusters were typically found adjacent to white matter lesions and their presence was associated with a chronic disease course. Extensive investigation of these clusters by histology did not identify features of lymphoid follicles, including organization of T and B cells into separate zones, CD35+ follicular dendritic cells, or germinal centers. The majority of cluster B cells were IgD+ with little evidence of class switch. Consistent with this, B cells isolated from the spinal cord were of the naïve/memory CD38hi CD95lo phenotype. Nevertheless, they were CD62Llo and CD80hi compared to lymph node B cells suggesting that they were at least partly activated and primed to present antigen. Therefore, if meningeal B cells contribute to CNS pathology in autoimmunity, follicular differentiation is not necessary for the pathogenic mechanism.
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Affiliation(s)
- Amy K Dang
- Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University Canada , London, ON , Canada
| | - Yodit Tesfagiorgis
- Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University Canada , London, ON , Canada
| | - Rajiv W Jain
- Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University Canada , London, ON , Canada
| | - Heather C Craig
- Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University Canada , London, ON , Canada
| | - Steven M Kerfoot
- Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University Canada , London, ON , Canada
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262
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Blood coagulation protein fibrinogen promotes autoimmunity and demyelination via chemokine release and antigen presentation. Nat Commun 2015; 6:8164. [PMID: 26353940 PMCID: PMC4579523 DOI: 10.1038/ncomms9164] [Citation(s) in RCA: 193] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 07/27/2015] [Indexed: 12/14/2022] Open
Abstract
Autoimmunity and macrophage recruitment into the central nervous system (CNS) are critical determinants of neuroinflammatory diseases. However, the mechanisms that drive immunological responses targeted to the CNS remain largely unknown. Here we show that fibrinogen, a central blood coagulation protein deposited in the CNS after blood–brain barrier disruption, induces encephalitogenic adaptive immune responses and peripheral macrophage recruitment into the CNS leading to demyelination. Fibrinogen stimulates a unique transcriptional signature in CD11b+ antigen-presenting cells inducing the recruitment and local CNS activation of myelin antigen-specific Th1 cells. Fibrinogen depletion reduces Th1 cells in the multiple sclerosis model, experimental autoimmune encephalomyelitis. Major histocompatibility complex (MHC) II-dependent antigen presentation, CXCL10- and CCL2-mediated recruitment of T cells and macrophages, respectively, are required for fibrinogen-induced encephalomyelitis. Inhibition of the fibrinogen receptor CD11b/CD18 protects from all immune and neuropathologic effects. Our results show that the final product of the coagulation cascade is a key determinant of CNS autoimmunity. Autoimmune brain inflammation is associated with activation of macrophages and microglia. Here the authors show that fibrinogen induces encephalitogenic T-cell activation and macrophage recruitment to the central nervous system, and promotes demyelination in a mouse model of multiple sclerosis.
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263
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Giles JR, Kashgarian M, Koni PA, Shlomchik MJ. B Cell-Specific MHC Class II Deletion Reveals Multiple Nonredundant Roles for B Cell Antigen Presentation in Murine Lupus. THE JOURNAL OF IMMUNOLOGY 2015; 195:2571-9. [PMID: 26268653 DOI: 10.4049/jimmunol.1500792] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/17/2015] [Indexed: 11/19/2022]
Abstract
B cells have both Ab-dependent and Ab-independent functions in systemic autoimmune diseases, including systemic lupus erythematosus (SLE). Ab-independent functions are known to be important, because mice with B cells but no secreted Ig have severe disease. These functions could include roles in lymphoid development, cytokine secretion, and Ag presentation; however, these possibilities have not been directly tested in SLE models. In this study, we show by lineage-specific ablation of MHC class II (MHCII) that B cell Ag presentation plays a nonredundant role in CD4(+) T cell activation and effector differentiation in the MRL.Fas(lpr) mouse model of SLE. MHCII-mediated interactions between B and T cells further promote B cell proliferation and differentiation, and, in fact, inefficient MHCII deletion on B cells led to strong selection of escaped cells in activated and plasmablast compartments, further underscoring the central role of B cell Ag presentation. Despite the leakiness in the system, B cell-specific MHCII deletion resulted in substantially ameliorated clinical disease. Hence, B cell Ag presentation is critical for T and B cell activation and differentiation, as well as target organ damage.
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Affiliation(s)
- Josephine R Giles
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06519; Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Michael Kashgarian
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06519
| | - Pandelakis A Koni
- Cancer Research Center, Georgia Regents University, Augusta, GA 30192; and Department of Medicine, Georgia Regents University, Augusta, GA 30192
| | - Mark J Shlomchik
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06519; Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261;
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264
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Abstract
While over the past decades T cells have been considered key players in the pathogenesis of multiple sclerosis (MS), it has only recently become evident that B cells have a major contributing role. Our understanding of the role of B cells has evolved substantially following the clinical success of B cell-targeting therapies and increasing experimental evidence for significant B cell involvement. Rather than mere antibody-producing cells, it is becoming clear that they are team players with the capacity to prime and regulate T cells, and function both as pro- and anti-inflammatory mediators. However, despite tremendous efforts, the target antigen(s) of B cells in MS have yet to be identified. The first part of this review summarizes the clinical evidence and results from animal studies pointing to the relevance of B cells in the pathogenesis of MS. The second part gives an overview of the currently known potential autoantigen targets. The third part recapitulates and critically appraises the currently available B cell-directed therapies.
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265
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Riedhammer C, Weissert R. Antigen Presentation, Autoantigens, and Immune Regulation in Multiple Sclerosis and Other Autoimmune Diseases. Front Immunol 2015; 6:322. [PMID: 26136751 PMCID: PMC4470263 DOI: 10.3389/fimmu.2015.00322] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 06/03/2015] [Indexed: 12/12/2022] Open
Abstract
Antigen presentation is in the center of the immune system, both in host defense against pathogens, but also when the system is unbalanced and autoimmune diseases like multiple sclerosis (MS) develop. It is not just by chance that a major histocompatibility complex gene is the major genetic susceptibility locus in MS; a feature that MS shares with other autoimmune diseases. The exact etiology of the disease, however, has not been fully understood yet. T cells are regarded as the major players in the disease, but most probably a complex interplay of altered central and peripheral tolerance mechanisms, T-cell and B-cell functions, characteristics of putative autoantigens, and a possible interference of environmental factors like microorganisms are at work. In this review, new data on all these different aspects of antigen presentation and their role in MS will be discussed, probable autoantigens will be summarized, and comparisons to other autoimmune diseases will be drawn.
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Affiliation(s)
- Christine Riedhammer
- Neuroimmunology, Department of Neurology, University of Regensburg , Regensburg , Germany
| | - Robert Weissert
- Neuroimmunology, Department of Neurology, University of Regensburg , Regensburg , Germany
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266
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Shen P, Fillatreau S. Antibody-independent functions of B cells: a focus on cytokines. Nat Rev Immunol 2015; 15:441-51. [PMID: 26065586 DOI: 10.1038/nri3857] [Citation(s) in RCA: 332] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cytokine production by B cells is important for multiple aspects of immunity. B cell-derived cytokines, including lymphotoxin, are essential for the ontogenesis, homeostasis and activation of secondary lymphoid organs, as well as for the development of tertiary lymphoid tissues at ectopic sites. Other B cell-derived cytokines, such as interleukin-6 (IL-6), interferon-γ and tumour necrosis factor, influence the development of effector and memory CD4(+) T cell responses. Finally, B cells can regulate inflammatory immune responses, primarily through their provision of IL-10 and IL-35. This Review summarizes these various roles of cytokine-producing B cells in immunity and discusses the rational for targeting these cells in the clinic.
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Affiliation(s)
- Ping Shen
- Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany
| | - Simon Fillatreau
- Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany
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267
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Zhang J, Benedek G, Bodhankar S, Lapato A, Vandenbark AA, Offner H. IL-10 producing B cells partially restore E2-mediated protection against EAE in PD-L1 deficient mice. J Neuroimmunol 2015. [PMID: 26198929 DOI: 10.1016/j.jneuroim.2015.06.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Women with multiple sclerosis (MS) often experience clinical improvement during pregnancy, indicating that sex hormones might have therapeutic effects in MS. Our previous studies have demonstrated that B cells and PD-L1 are crucial for E2 (17β-estradiol)-mediated protection against experimental autoimmune encephalomyelitis (EAE). We here demonstrate that the transfer of IL-10(+) B cells into E2-treated PD-L1(-/-) mice after EAE induction could partially restore E2-mediated protection and decrease the frequency of pro-inflammatory cells in the CNS compared to E2/saline treated PD-L1(-/-) mice. Hence, co-administration of IL-10(+) B cells and E2 might have a powerful therapeutic potential for treatment of EAE.
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Affiliation(s)
- Jun Zhang
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
| | - Gil Benedek
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
| | - Sheetal Bodhankar
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
| | - Andrew Lapato
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
| | - Arthur A Vandenbark
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA; Department of Molecular Microbiology & Immunology, Oregon Health & Science University, Portland, OR, USA.
| | - Halina Offner
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA; Department of Neurology, Oregon Health & Science University, Portland, OR, USA; Department of Anesthesiology and Perioperative Medicine, Oregon Health & Science University, Portland, OR, USA.
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268
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Li Y, Wang W, Tang L, He X, Yan X, Zhang X, Zhu Y, Sun J, Shi Y, Ma X, Mackay IR, Gershwin ME, Han Y, Hou J. Chemokine (C-X-C motif) ligand 13 promotes intrahepatic chemokine (C-X-C motif) receptor 5+ lymphocyte homing and aberrant B-cell immune responses in primary biliary cirrhosis. Hepatology 2015; 61:1998-2007. [PMID: 25627620 PMCID: PMC4441570 DOI: 10.1002/hep.27725] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 01/22/2015] [Indexed: 01/13/2023]
Abstract
UNLABELLED The serological hallmark of primary biliary cirrhosis (PBC) is the presence of high titer and specific antimitochondrial antibodies (AMAs). Although there is no global immune defect in patients with PBC, there is widespread dysregulated B-cell function, including increased sera levels of immunoglobulin M and enhanced B-cell responses to cytosine-phosphate-guanine stimulation. The mechanisms involved in this B-cell dysfunction have remained unknown. To address this issue, we focused on identifying the frequencies of B-cell subsets in patients with PBC and the mechanisms that lead to B-cell dysregulation, including the relationships with chemokine (C-X-C motif) receptor 5 (CXCR5)(+) CD4(+) T cells. Herein, we report that elevations of both serum and intrahepatic interleukin-21 (IL-21) were found in patients with PBC and, in particular, promoted B-cell proliferation, signal transducer and activator of transcription 3 phosphorylation and AMA production in vitro. More important, upon stimulation with recombinant E2 subunit of pyruvate dehydrogenase complex, CXCR5(+) CD4(+) T cells in PBC produced higher levels of IL-21 than healthy controls. Additionally, sorted CXCR5(+) CD4(+) T cells increased production of AMAs by autologous CD19(+) B cells. Indeed, elevated expression of intrahepatic chemokine (C-X-C motif) ligand 13 (CXCL13), a key chemokine of CXCR5(+) cells, was uniquely found within the portal tracts in PBC, accompanied by infiltrates of CD4(+) , CXCR5(+) , CD19(+) , and CD38(+) cells. CONCLUSION CXCL13 promotes aggregation of CD19(+) B cells and CXCR5(+) CD4(+) T cells, which directs the aberrant AMA response by IL-21. These data have implications for potential immunotherapy and also reflect the unique lymphoid biology in liver of PBC.
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Affiliation(s)
- Yongyin Li
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Weibin Wang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Libo Tang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Xuanqiu He
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Xin Yan
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Xiaoyong Zhang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Youfu Zhu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Jian Sun
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China
| | - Yongquan Shi
- Division of Hepatology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, China
| | - Xiong Ma
- Division of Gastroenterology and Hepatology, Ren Ji Hospital, Shanghai Jiao Tong University, China
| | - Ian R. Mackay
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - M. Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, CA, USA
| | - Ying Han
- Division of Hepatology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, China
| | - Jinlin Hou
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, China,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, China
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269
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Ireland SJ, Monson NL, Davis LS. Seeking balance: Potentiation and inhibition of multiple sclerosis autoimmune responses by IL-6 and IL-10. Cytokine 2015; 73:236-44. [PMID: 25794663 PMCID: PMC4437890 DOI: 10.1016/j.cyto.2015.01.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 01/12/2015] [Accepted: 01/22/2015] [Indexed: 01/07/2023]
Abstract
The cytokines IL-6 and IL-10 are produced by cells of the adaptive and innate arms of the immune system and they appear to play key roles in genetically diverse autoimmune diseases such as relapsing remitting multiple sclerosis (MS), rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). Whereas previous intense investigations focused on the generation of autoantibodies and their contribution to immune-mediated pathogenesis in these diseases; more recent attention has focused on the roles of cytokines such as IL-6 and IL-10. In response to pathogens, antigen presenting cells (APC), including B cells, produce IL-6 and IL-10 in order to up-or down-regulate immune cell activation and effector responses. Evidence of elevated levels of the proinflammatory cytokine IL-6 has been routinely observed during inflammatory responses and in a number of autoimmune diseases. Our recent studies suggest that MS peripheral blood B cells secrete higher quantities of IL-6 and less IL-10 than B cells from healthy controls. Persistent production of IL-6, in turn, contributes to T cell expansion and the functional hyperactivity of APC such as MS B cells. Altered B cell activity can have a profound impact on resultant T cell effector functions. Enhanced signaling through the IL-6 receptor can effectively inhibit cytolytic activity, induce T cell resistance to IL-10-mediated immunosuppression and increase skewing of autoreactive T cells to a pathogenic Th17 phenotype. Our recent findings and studies by others support a role for the indirect attenuation of B cell responses by Glatiramer acetate (GA) therapy. Our studies suggest that GA therapy temporarily permits homeostatic regulatory mechanisms to be reinstated. Future studies of mechanisms underlying dysregulated B cell cytokine production could lead to the identification of novel targets for improved immunoregulatory therapies for autoimmune diseases.
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Affiliation(s)
- Sara J Ireland
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas, TX 75390-8884, United States.
| | - Nancy L Monson
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas, TX 75390-8884, United States.
| | - Laurie S Davis
- Rheumatic Diseases Division, Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, TX 75390-8884, United States.
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270
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du Pré MF, Sollid LM. T-cell and B-cell immunity in celiac disease. Best Pract Res Clin Gastroenterol 2015; 29:413-23. [PMID: 26060106 DOI: 10.1016/j.bpg.2015.04.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 04/26/2015] [Indexed: 01/31/2023]
Abstract
Celiac disease is an inflammatory disorder with leukocyte infiltration and changes of tissue architecture of the small intestine. The condition develops in genetically susceptible individuals as the result of an inappropriate immune response to gluten proteins of wheat, barley and rye. The clinical manifestations and the histological changes normalize when gluten is eliminated from the diet. CD4(+) T cells that recognize gluten peptides bound to predisposing HLA-DQ molecules play a key role in the pathogenesis. These T cells recognize better gluten peptides that are deamidated, and this posttranslational modification is mediated by the enzyme transglutaminase 2 (TG2). Another hallmark of celiac disease is the production of antibodies to gluten as well as to TG2. A role for B cells in celiac disease pathogenesis is receiving increased recognition. This review will discuss the main discoveries in the field of T-cell and B-cell biology of celiac disease.
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Affiliation(s)
- M Fleur du Pré
- Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway.
| | - Ludvig M Sollid
- Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway.
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271
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Onizawa M, Oshima S, Schulze-Topphoff U, Oses-Prieto JA, Lu T, Tavares R, Prodhomme T, Duong B, Whang MI, Advincula R, Agelidis A, Barrera J, Wu H, Burlingame A, Malynn BA, Zamvil SS, Ma A. The ubiquitin-modifying enzyme A20 restricts ubiquitination of the kinase RIPK3 and protects cells from necroptosis. Nat Immunol 2015; 16:618-27. [PMID: 25939025 PMCID: PMC4439357 DOI: 10.1038/ni.3172] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 04/08/2015] [Indexed: 12/14/2022]
Abstract
A20 is an anti-inflammatory protein linked to multiple human diseases; however, the mechanisms by which A20 prevents inflammatory disease are incompletely defined. We found that A20-deficient T cells and fibroblasts were susceptible to caspase-independent and kinase RIPK3-dependent necroptosis. Global deficiency in RIPK3 significantly restored the survival of A20-deficient mice. A20-deficient cells exhibited exaggerated formation of RIPK1-RIPK3 complexes. RIPK3 underwent physiological ubiquitination at Lys5 (K5), and this ubiquitination event supported the formation of RIPK1-RIPK3 complexes. Both the ubiquitination of RIPK3 and formation of the RIPK1-RIPK3 complex required the catalytic cysteine of A20's deubiquitinating motif. Our studies link A20 and the ubiquitination of RIPK3 to necroptotic cell death and suggest additional mechanisms by which A20 might prevent inflammatory disease.
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Affiliation(s)
- Michio Onizawa
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Shigeru Oshima
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Ulf Schulze-Topphoff
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94143
| | - Juan A Oses-Prieto
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94143
| | - Timothy Lu
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Rita Tavares
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Thomas Prodhomme
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94143
| | - Bao Duong
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Michael I. Whang
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Rommel Advincula
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Alex Agelidis
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Julio Barrera
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Hao Wu
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Department of Biological Chemistry and Molecular Pharmacology, Harvard, Medical School, Boston, MA 02115
| | - Alma Burlingame
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94143
| | - Barbara A. Malynn
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Scott S. Zamvil
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94143
| | - Averil Ma
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
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272
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Turner MJ, Pang PT, Chretien N, Havari E, LaMorte MJ, Oliver J, Pande N, Masterjohn E, Carter K, Reczek D, Brondyk W, Roberts BL, Kaplan JM, Siders WM. Reduction of inflammation and preservation of neurological function by anti-CD52 therapy in murine experimental autoimmune encephalomyelitis. J Neuroimmunol 2015. [PMID: 26198912 DOI: 10.1016/j.jneuroim.2015.05.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Alemtuzumab, a monoclonal antibody directed against human CD52, is used in the treatment of MS. To characterize the impact of anti-CD52 administration, a monoclonal antibody to mouse CD52 (anti-muCD52) was generated and evaluated in EAE mouse models of MS. A single course of anti-muCD52 provided a therapeutic benefit accompanied by a reduction in the frequency of autoreactive T lymphocytes and production of pro-inflammatory cytokines. Examination of the CNS revealed a decrease in infiltrating lymphocytes, demyelination and axonal loss. Electrophysiological assessment showed preservation of axonal conductance in the spinal cord. These findings suggest that anti-CD52 therapy may help preserve CNS integrity.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antigens, CD/immunology
- Antigens, Neoplasm/immunology
- Axons/drug effects
- Axons/immunology
- Axons/pathology
- CD52 Antigen
- Demyelinating Diseases/drug therapy
- Demyelinating Diseases/immunology
- Demyelinating Diseases/pathology
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Glycoproteins/antagonists & inhibitors
- Glycoproteins/immunology
- Humans
- Inflammation/drug therapy
- Inflammation/immunology
- Inflammation/pathology
- Inflammation Mediators/antagonists & inhibitors
- Inflammation Mediators/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Molecular Sequence Data
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Affiliation(s)
- Michael J Turner
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States.
| | - Petti T Pang
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Nathalie Chretien
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Evis Havari
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Michael J LaMorte
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Julian Oliver
- Pathology, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Nilesh Pande
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Elizabeth Masterjohn
- Biologics Discovery, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Karen Carter
- Biologics Discovery, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - David Reczek
- Biologics Discovery, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - William Brondyk
- Biologics Discovery, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Bruce L Roberts
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - Johanne M Kaplan
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
| | - William M Siders
- Neuroimmunology Research, Genzyme, a Sanofi company, 49 New York Avenue, Framingham, MA 01701, United States
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273
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Decreased Frequency of Circulating Myelin Oligodendrocyte Glycoprotein B Lymphocytes in Patients with Relapsing-Remitting Multiple Sclerosis. J Immunol Res 2015; 2015:673503. [PMID: 26090495 PMCID: PMC4452172 DOI: 10.1155/2015/673503] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 10/26/2014] [Accepted: 11/14/2014] [Indexed: 11/25/2022] Open
Abstract
Although there is no evidence for a role of anti-MOG antibodies in adult MS, no information on B lymphocytes with MOG-committed BCR is available. We report here on the frequency of anti-MOG B cells forming rosettes with polystyrene beads (BBR) covalently bound to the extracellular domain of rhMOG in 38 relapsing-remitting patients (RRMS) and 50 healthy individuals (HI). We show a substantial proportion of circulating anti-MOG-BBR in both RRMS and HI. Strikingly, MOG-specific B cells frequencies were lower in MS than in HI. Anti-MOG antibodies measured by a cell-based assay were not different between MS patients and controls, suggesting a specific alteration of anti-MOG B cells in MS. Although anti-MOG-BBR were higher in CNS fluid than in blood, no difference was observed between MS and controls. Lower frequency of MOG-BBR in MS was not explained by an increased apoptosis, but a trend for lower proliferative capacity was noted. Despite an efficient B cell transmigration across brain derived endothelial cells, total and anti-MOG B cells transmigration was similar between MS and HI. The striking alteration in MOG-specific B cells, independent of anti-MOG antibody titers, challenges our view on the role of MOG-specific B cells in MS.
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274
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Knight AM. B-cell acquisition of antigen: Sensing the surface. Eur J Immunol 2015; 45:1600-4. [PMID: 25929718 DOI: 10.1002/eji.201545684] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 04/28/2015] [Indexed: 12/30/2022]
Abstract
B-cell antigen receptor (BCR) recognition and acquisition of antigen by B cells is the essential first step in the generation of effective antibody responses. As B-cell-mediated antigen presentation is also believed to play a significant role in the activation of CD4(+) Th-cell responses, considerable effort has focused on clarifying the nature of antigen/BCR interactions. Following earlier descriptions of interactions of soluble antigens with the BCR, it is now clear that B cells also recognize, physically extract and present antigens that are tethered to, or integral components of, the surfaces or extracellular matrix of other cells. In this issue of the European Journal of Immunology, Zeng et al. [Eur. J. Immunol. 2015. 45: XXXX-XXXX] examine how the physical property or "stiffness" of the surface displaying antigens to B cells influences the B-cell response. This commentary reports that antigen tethered on "less stiff" surfaces induces increased B-cell activation and antibody responses. I then infer how "sensing the surface" by B cells may represent a new component of the immune system's ability to detect "damage," and how this understanding may influence approaches to clinical therapies where immune activity is either unwanted or desired.
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Affiliation(s)
- Andrew M Knight
- The Institute of Cellular Medicine, The Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle upon Tyne, UK
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275
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Bennett JL, O'Connor KC, Bar-Or A, Zamvil SS, Hemmer B, Tedder TF, von Büdingen HC, Stuve O, Yeaman MR, Smith TJ, Stadelmann C. B lymphocytes in neuromyelitis optica. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2015; 2:e104. [PMID: 25977932 PMCID: PMC4426682 DOI: 10.1212/nxi.0000000000000104] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 02/16/2015] [Indexed: 12/21/2022]
Abstract
Neuromyelitis optica (NMO) is an inflammatory autoimmune disorder of the CNS that predominantly affects the spinal cord and optic nerves. A majority (approximately 75%) of patients with NMO are seropositive for autoantibodies against the astrocyte water channel aquaporin-4 (AQP4). These autoantibodies are predominantly IgG1, and considerable evidence supports their pathogenicity, presumably by binding to AQP4 on CNS astrocytes, resulting in astrocyte injury and inflammation. Convergent clinical and laboratory-based investigations have indicated that B cells play a fundamental role in NMO immunopathology. Multiple mechanisms have been hypothesized: AQP4 autoantibody production, enhanced proinflammatory B cell and plasmablast activity, aberrant B cell tolerance checkpoints, diminished B cell regulatory function, and loss of B cell anergy. Accordingly, many current off-label therapies for NMO deplete B cells or modulate their activity. Understanding the role and mechanisms whereby B cells contribute to initiation, maintenance, and propagation of disease activity is important to advancing our understanding of NMO pathogenesis and developing effective disease-specific therapies.
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Affiliation(s)
- Jeffrey L Bennett
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Kevin C O'Connor
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Amit Bar-Or
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Scott S Zamvil
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Bernhard Hemmer
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Thomas F Tedder
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - H-Christian von Büdingen
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Olaf Stuve
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Michael R Yeaman
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Terry J Smith
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
| | - Christine Stadelmann
- Departments of Neurology and Ophthalmology and Neuroscience Program (J.L.B.), University of Colorado, Denver; Department of Neurology (K.C.O.), Yale University School of Medicine, New Haven, CT; Neuroimmunology Unit (A.B.-O.), Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Neurology (S.S.Z., H.-C.v.B.), UCSF School of Medicine, San Francisco, CA; Department of Neurology (B.H.), Technische Universität München, Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; Department of Immunology (T.F.T.), Duke University Medical Center, Durham, NC; Departments of Neurology and Neurotherapeutics (O.S.), University of Texas Southwestern Medical Center, Dallas, TX; Department of Medicine (M.R.Y.), Divisions of Molecular Medicine and Infectious Diseases, University of California, Los Angeles; Harbor-UCLA Medical Center (M.R.Y.), Torrance, CA; Departments of Ophthalmology and Visual Sciences and Internal Medicine (T.J.S.), University of Michigan Medical School, Ann Arbor; and Institute of Neuropathology (C.S.), University Medical Center, Göttingen, Germany
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276
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Savarin C, Hinton DR, Valentin-Torres A, Chen Z, Trapp BD, Bergmann CC, Stohlman SA. Astrocyte response to IFN-γ limits IL-6-mediated microglia activation and progressive autoimmune encephalomyelitis. J Neuroinflammation 2015; 12:79. [PMID: 25896970 PMCID: PMC4410573 DOI: 10.1186/s12974-015-0293-9] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 04/02/2015] [Indexed: 02/04/2023] Open
Abstract
Background Therapeutic modalities effective in patients with progressive forms of multiple sclerosis (MS) are limited. In a murine model of progressive MS, the sustained disability during the chronic phase of experimental autoimmune encephalomyelitis (EAE) correlated with elevated expression of interleukin (IL)-6, a cytokine with pleiotropic functions and therapeutic target for non-central nervous system (CNS) autoimmune disease. Sustained IL-6 expression in astrocytes restricted to areas of demyelination suggested that IL-6 plays a major role in disease progression during chronic EAE. Methods A progressive form of EAE was induced using transgenic mice expressing a dominant negative interferon-γ (IFN-γ) receptor alpha chain under control of human glial fibrillary acidic protein (GFAP) promoter (GFAPγR1Δ mice). The role of IL-6 in regulating progressive CNS autoimmunity was assessed by treating GFAPγR1Δ mice with anti-IL-6 neutralizing antibody during chronic EAE. Results IL-6 neutralization restricted disease progression and decreased disability, myelin loss, and axonal damage without affecting astrogliosis. IL-6 blockade reduced CNS inflammation by limiting inflammatory cell proliferation; however, the relative frequencies of CNS leukocyte infiltrates, including the Th1, Th17, and Treg CD4 T cell subsets, were not altered. IL-6 blockade rather limited the activation and proliferation of microglia, which correlated with higher expression of Galectin-1, a regulator of microglia activation expressed by astrocytes. Conclusions These data demonstrate that astrocyte-derived IL-6 is a key mediator of progressive disease and support IL-6 blockade as a viable intervention strategy to combat progressive MS.
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Affiliation(s)
- Carine Savarin
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - David R Hinton
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA.
| | - Alice Valentin-Torres
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - Zhihong Chen
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - Bruce D Trapp
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - Cornelia C Bergmann
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
| | - Stephen A Stohlman
- Department of Neurosciences NC-30, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
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277
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Parker Harp CR, Archambault AS, Sim J, Ferris ST, Mikesell RJ, Koni PA, Shimoda M, Linington C, Russell JH, Wu GF. B cell antigen presentation is sufficient to drive neuroinflammation in an animal model of multiple sclerosis. THE JOURNAL OF IMMUNOLOGY 2015; 194:5077-84. [PMID: 25895531 DOI: 10.4049/jimmunol.1402236] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 03/20/2015] [Indexed: 11/19/2022]
Abstract
B cells are increasingly regarded as integral to the pathogenesis of multiple sclerosis, in part as a result of the success of B cell-depletion therapy. Multiple B cell-dependent mechanisms contributing to inflammatory demyelination of the CNS have been explored using experimental autoimmune encephalomyelitis (EAE), a CD4 T cell-dependent animal model for multiple sclerosis. Although B cell Ag presentation was suggested to regulate CNS inflammation during EAE, direct evidence that B cells can independently support Ag-specific autoimmune responses by CD4 T cells in EAE is lacking. Using a newly developed murine model of in vivo conditional expression of MHC class II, we reported previously that encephalitogenic CD4 T cells are incapable of inducing EAE when B cells are the sole APC. In this study, we find that B cells cooperate with dendritic cells to enhance EAE severity resulting from myelin oligodendrocyte glycoprotein (MOG) immunization. Further, increasing the precursor frequency of MOG-specific B cells, but not the addition of soluble MOG-specific Ab, is sufficient to drive EAE in mice expressing MHCII by B cells alone. These data support a model in which expansion of Ag-specific B cells during CNS autoimmunity amplifies cognate interactions between B and CD4 T cells and have the capacity to independently drive neuroinflammation at later stages of disease.
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Affiliation(s)
- Chelsea R Parker Harp
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110
| | - Angela S Archambault
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110
| | - Julia Sim
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
| | - Stephen T Ferris
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Robert J Mikesell
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110
| | - Pandelakis A Koni
- Cancer Immunology, Inflammation, and Tolerance Program, Cancer Center and Department of Medicine, Georgia Regents University, Augusta, GA 30912
| | - Michiko Shimoda
- Department of Dermatology, University of California at Davis School of Medicine, Sacramento, CA 95817; and
| | | | - John H Russell
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110
| | - Gregory F Wu
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110;
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278
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Fillatreau S. Pathogenic functions of B cells in autoimmune diseases: IFN-γ production joins the criminal gang. Eur J Immunol 2015; 45:966-70. [DOI: 10.1002/eji.201545544] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 02/23/2015] [Accepted: 02/26/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Simon Fillatreau
- Deutsches Rheuma-Forschungszentrum; a Leibniz Institute; Berlin Germany
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280
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Abstract
Numerous reports have described Toll-like receptor (TLR) functions in myeloid cells such as dendritic cells (DCs) and macrophages, but relatively fewer studies have examined TLR responses in B lymphocytes. B cells express a wide variety of TLRs and are highly activated after TLR ligation, leading to enhancements in B cell survival, surface molecule expression, cytokine and antibody production, and antigen presentation. During an immune response, B cells can receive signals through TLRs as well as the B cell antigen receptor (BCR) and/or CD40. TLR ligation synergizes with signals through these receptors and augments both innate and adaptive immune functions of B lymphocytes. Additionally, targeting B cell TLRs may provide new therapies against certain types of cancer as well as autoimmune diseases. Here, we summarize TLR expression and contributions to both normal and pathogenic functions in mouse and human B cells.
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Affiliation(s)
- Claire M Buchta
- Graduate Program in Immunology, University of Iowa, Iowa City, IA, 52242, USA
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281
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Lehmann-Horn K, Sagan SA, Bernard CCA, Sobel RA, Zamvil SS. B-cell very late antigen-4 deficiency reduces leukocyte recruitment and susceptibility to central nervous system autoimmunity. Ann Neurol 2015; 77:902-8. [PMID: 25712734 PMCID: PMC4405474 DOI: 10.1002/ana.24387] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/20/2015] [Accepted: 02/09/2015] [Indexed: 12/31/2022]
Abstract
Natalizumab, which binds very late antigen‐4 (VLA‐4), is a potent therapy for multiple sclerosis (MS). Studies have focused primarily upon its capacity to interfere with T‐cell migration into the central nervous system (CNS). B cells are important in MS pathogenesis and express high levels of VLA‐4. Here, we report that the selective inhibition of VLA‐4 expression on B cells impedes CNS accumulation of B cells, and recruitment of Th17 cells and macrophages, and reduces susceptibility to experimental autoimmune encephalomyelitis. These results underscore the importance of B‐cell VLA‐4 expression in the pathogenesis of CNS autoimmunity and provide insight regarding mechanisms that may contribute to the benefit of natalizumab in MS, as well as candidate therapeutics that selectively target B cells. Ann Neurol 2015;77:902–908
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Affiliation(s)
- Klaus Lehmann-Horn
- Department of Neurology, University of California; Program in Immunology, University of California, San Francisco, San Francisco, CA
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282
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von Büdingen HC, Palanichamy A, Lehmann-Horn K, Michel BA, Zamvil SS. Update on the autoimmune pathology of multiple sclerosis: B-cells as disease-drivers and therapeutic targets. Eur Neurol 2015; 73:238-246. [PMID: 25824054 DOI: 10.1159/000377675] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 02/01/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND Collectively, research on the role of B-cells in the pathogenesis of multiple sclerosis (MS) illustrates how translational medicine has given rise to promising therapeutic approaches for one of the most debilitating chronic neurological diseases in young adults. First described in 1935, the experimental autoimmune/allergic encephalomyelitis model is a key animal model that has provided the foundation for important developments in targeted therapeutics. SUMMARY While additional B-cell therapies for MS are presently being developed by the pharmaceutical industry, much remains to be understood about the role played by B-cells in MS. The goal of this review is to summarize how B-cells may contribute to MS pathogenesis and thereby provide a basis for understanding why B-cell depletion is so effective in the treatment of this disease. Key Messages: B-cells are key players in the pathogenesis of MS, and their depletion via B-cell-targeted therapy ameliorates disease activity. CLINICAL IMPLICATIONS In 2008, data from the first CD20-targeting B-cell depleting therapeutic trials using rituximab in MS were published. Since then, there has been a large body of evidence demonstrating the effectiveness of B-cell depletion mediated via anti-CD20 antibodies. Intense research efforts focusing on the immunopathological relevance of B-cells has gained significant momentum and given rise to a constellation of promising therapeutic agents for this complex B-cell-driven disease, including novel anti-CD20 antibodies, as well as agents targeting CD19 and BAFF-R.
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283
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Nicol B, Salou M, Laplaud DA, Wekerle H. The autoimmune concept of multiple sclerosis. Presse Med 2015; 44:e103-12. [PMID: 25813101 DOI: 10.1016/j.lpm.2015.02.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 02/23/2015] [Indexed: 12/12/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory and demyelinating disease of the central nervous system (CNS). With growing evidence for environmental and genetic factors, MS is now accepted as an autoimmune disease. This complex disease seems to implicate various cell types in both innate and adaptive compartments. Here, we discuss recent advances in the immunological field of MS research.
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Affiliation(s)
- Bryan Nicol
- CHU de Nantes, service de neurologie, Inserm CR1064, 44093 Nantes cedex, France
| | - Marion Salou
- CHU de Nantes, service de neurologie, Inserm CR1064, 44093 Nantes cedex, France
| | - David-Axel Laplaud
- CHU de Nantes, service de neurologie, Inserm CR1064, 44093 Nantes cedex, France.
| | - Hartmut Wekerle
- Max Planck institute of neurobiology, department of neuroimmunology, Planegg-Martinsried, 31, 81377 Munich, Germany
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Kozela E, Juknat A, Kaushansky N, Ben-Nun A, Coppola G, Vogel Z. Cannabidiol, a non-psychoactive cannabinoid, leads to EGR2-dependent anergy in activated encephalitogenic T cells. J Neuroinflammation 2015; 12:52. [PMID: 25880134 PMCID: PMC4363052 DOI: 10.1186/s12974-015-0273-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/26/2015] [Indexed: 11/16/2022] Open
Abstract
Background Cannabidiol (CBD), the main non-psychoactive cannabinoid, has been previously shown by us to ameliorate clinical symptoms and to decrease inflammation in myelin oligodendrocyte glycoprotein (MOG)35-55-induced mouse experimental autoimmune encephalomyelitis model of multiple sclerosis as well as to decrease MOG35-55-induced T cell proliferation and IL-17 secretion. However, the mechanisms of CBD anti-inflammatory activities are unclear. Methods Here we analyzed the effects of CBD on splenocytes (source of accessory T cells and antigen presenting cells (APC)) co-cultured with MOG35-55-specific T cells (TMOG) and stimulated with MOG35-55. Using flow cytometry, we evaluated the expression of surface activation markers and inhibitory molecules on T cells and B cells. TMOG cells were purified using CD4 positive microbead selection and submitted for quantitative PCR and microarray of mRNA transcript analyzes. Cell signaling studies in purified TMOG were carried out using immunoblotting. Results We found that CBD leads to upregulation of CD69 and lymphocyte-activation gene 3 (LAG3) regulatory molecules on CD4+CD25− accessory T cells. This subtype of CD4+CD25−CD69+LAG3+ T cells has been recognized as induced regulatory phenotype promoting anergy in activated T cells. Indeed, we observed that CBD treatment results in upregulation of EGR2 (a key T cell anergy inducer) mRNA transcription in stimulated TMOG cells. This was accompanied by elevated levels of anergy promoting genes such as IL-10 (anti-inflammatory cytokine), STAT5 (regulatory factor), and LAG3 mRNAs, as well as of several enhancers of cell cycle arrest (such as Nfatc1, Casp4, Cdkn1a, and Icos). Moreover, CBD exposure leads to a decrease in STAT3 and to an increase in STAT5 phosphorylation in TMOG cells, positive and negative regulators of Th17 activity, respectively. In parallel, we observed decreased levels of major histocompatibility complex class II (MHCII), CD25, and CD69 on CD19+ B cells following CBD treatment, showing diminished antigen presenting capabilities of B cells and reduction in their pro-inflammatory functions. Conclusions Our data suggests that CBD exerts its immunoregulatory effects via induction of CD4+CD25−CD69+LAG3+ cells in MOG35-55-activated APC/TMOG co-cultures. This is accompanied by EGR2-dependent anergy of stimulated TMOG cells as well as a switch in their intracellular STAT3/STAT5 activation balance leading to the previously observed decrease in Th17 activity.
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Affiliation(s)
- Ewa Kozela
- The Dr Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Ana Juknat
- The Dr Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Nathali Kaushansky
- Neurobiology Department, Weizmann Institute of Science, Rehovot, Israel.
| | - Avraham Ben-Nun
- Immunology Department, Weizmann Institute of Science, Rehovot, Israel.
| | | | - Zvi Vogel
- The Dr Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Neurobiology Department, Weizmann Institute of Science, Rehovot, Israel.
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285
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Weber MS. Is intrathecal anti-CD20 an option to target compartmentalized CNS inflammation in progressive MS? NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2015; 2:e84. [PMID: 25798446 PMCID: PMC4360792 DOI: 10.1212/nxi.0000000000000084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Martin S Weber
- Institute of Neuropathology and Department of Neurology, University Medical Centre, Göttingen, Germany
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286
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Ireland SJ, Guzman AA, O'Brien DE, Hughes S, Greenberg B, Flores A, Graves D, Remington G, Frohman EM, Davis LS, Monson NL. The effect of glatiramer acetate therapy on functional properties of B cells from patients with relapsing-remitting multiple sclerosis. JAMA Neurol 2015; 71:1421-8. [PMID: 25264704 DOI: 10.1001/jamaneurol.2014.1472] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
IMPORTANCE This study describes what is, to our knowledge, the previously unknown effect of glatiramer acetate therapy on B cells in patients with relapsing-remitting multiple sclerosis (MS). OBJECTIVE To determine whether glatiramer acetate therapy normalizes dysregulated B-cell proliferation and cytokine production in patients with MS. DESIGN, SETTING, AND PARTICIPANTS Twenty-two patients with MS who were receiving glatiramer acetate therapy and 22 treatment-naive patients with MS were recruited at The University of Texas Southwestern Medical Center MS clinic. Cell samples from healthy donors were obtained from HemaCare (Van Nuys, California) or Carter Blood Bank (Dallas, Texas). Treatment-naive patients with MS had not received any disease-modifying therapies for at least 3 months before the study. EXPOSURES Glatiramer acetate therapy for at least 3 months at the time of the study. MAIN OUTCOMES AND MEASURES B-cell phenotype and proliferation and immunoglobulin and cytokine secretion. RESULTS A restoration of interleukin 10 production by peripheral B cells was observed in patients undergoing glatiramer acetate therapy as well as a significant reduction of interleukin 6 production in a subset of patients who received therapy for less than 32 months. Furthermore, proliferation in response to high-dose CD40L was altered and immunoglobulin production was elevated in in vitro-activated B cells obtained from patients who received glatiramer acetate. CONCLUSIONS AND RELEVANCE Glatiramer acetate therapy remodels the composition of the B-cell compartment and influences cytokine secretion and immunoglobulin production. These data suggest that glatiramer acetate therapy affects several aspects of dysregulated B-cell function in MS that may contribute to the therapeutic mechanisms of glatiramer acetate.
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Affiliation(s)
- Sara J Ireland
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Alyssa A Guzman
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Dina E O'Brien
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Samuel Hughes
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Benjamin Greenberg
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Angela Flores
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Donna Graves
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Gina Remington
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Elliot M Frohman
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas
| | - Laurie S Davis
- Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas
| | - Nancy L Monson
- Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas3Department of Immunology, The University of Texas Southwestern Medical Center, Dallas
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287
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Costanza M, Binart N, Steinman L, Pedotti R. Prolactin: A versatile regulator of inflammation and autoimmune pathology. Autoimmun Rev 2015; 14:223-30. [DOI: 10.1016/j.autrev.2014.11.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 11/08/2014] [Indexed: 12/20/2022]
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288
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Jackson SW, Kolhatkar NS, Rawlings DJ. B cells take the front seat: dysregulated B cell signals orchestrate loss of tolerance and autoantibody production. Curr Opin Immunol 2015; 33:70-7. [PMID: 25679954 DOI: 10.1016/j.coi.2015.01.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/15/2015] [Accepted: 01/28/2015] [Indexed: 01/06/2023]
Abstract
A significant proportion of autoimmune-associated genetic variants are expressed in B cells, suggesting that B cells may play multiple roles in autoimmune pathogenesis. In this review, we highlight recent studies demonstrating that even modest alterations in B cell signaling are sufficient to promote autoimmunity. First, we describe several examples of genetic variations promoting B cell-intrinsic initiation of autoimmune germinal centers and autoantibody production. We highlight how dual antigen receptor/toll-like receptor signals greatly facilitate this process and how activated, self-reactive B cells may function as antigen presenting cells, leading to loss of T cell tolerance. Further, we propose that B cell-derived cytokines may initiate and/or sustain autoimmune germinal centers, likely also contributing, in parallel, to programing of self-reactive T cells.
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Affiliation(s)
- Shaun W Jackson
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States; Seattle Children's Research Institute, Seattle, WA, United States
| | - Nikita S Kolhatkar
- Department of Immunology, University of Washington School of Medicine, Seattle, WA, United States; Seattle Children's Research Institute, Seattle, WA, United States
| | - David J Rawlings
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States; Department of Immunology, University of Washington School of Medicine, Seattle, WA, United States; Seattle Children's Research Institute, Seattle, WA, United States.
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289
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Zamvil SS, Slavin AJ. Does MOG Ig-positive AQP4-seronegative opticospinal inflammatory disease justify a diagnosis of NMO spectrum disorder? NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2015; 2:e62. [PMID: 25635259 PMCID: PMC4309526 DOI: 10.1212/nxi.0000000000000062] [Citation(s) in RCA: 219] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 12/01/2014] [Indexed: 01/24/2023]
Abstract
While neuromyelitis optica (NMO) immunoglobulin (Ig) G is considered the hallmark serologic marker of NMO, its association is not absolute, as NMO IgG is not detected in approximately one-fourth of the patients diagnosed with NMO spectrum disorder (NMOSD). Thus, the recent discovery that antibodies to myelin oligodendrocyte glycoprotein (MOG) are detected in some NMO IgG-seronegative patients manifesting clinical and neuroimaging signs of NMO or NMOSD has created tremendous excitement. However, it may be premature to classify this subgroup as NMOSD. NMO is considered an autoimmune astrocytopathy, and aquaporin-4 (AQP4), expressed on astrocytes, is recognized as the target autoantigen of NMO IgG. As its name denotes, MOG is produced by oligodendrocytes, CNS myelin-producing cells, and MOG is well-recognized as one of the candidate autoantigens in multiple sclerosis (MS) and acute disseminated encephalomyelitis (ADEM). Thus, is it possible that the clinical NMOSD-like phenotype associated with MOG-specific antibodies represents a variant of opticospinal MS or ADEM but not AQP4 autoimmunity or NMOSD? Whether this MOG-Ig positive AQP4-seronegative phenotype should be classified as NMOSD, opticospinal MS, or a unique entity is not simply a theoretical question but rather has practical implications for patients, their physicians, insurance carriers, and clinical investigators conducting NMO treatment trials.
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Affiliation(s)
- Scott S Zamvil
- Department of Neurology and Program in Immunology (S.S.Z.), University of California, San Francisco; and Abbvie Bioresearch Center Inc. (A.J.S.), Worcester, MA
| | - Anthony J Slavin
- Department of Neurology and Program in Immunology (S.S.Z.), University of California, San Francisco; and Abbvie Bioresearch Center Inc. (A.J.S.), Worcester, MA
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290
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Abstract
Autoimmune B cells play a major role in mediating tissue damage in multiple sclerosis (MS). In MS, B cells are believed to cross the blood-brain barrier and undergo stimulation, antigen-driven affinity maturation and clonal expansion within the supportive CNS environment. These highly restricted populations of clonally expanded B cells and plasma cells can be detected in MS lesions, in cerebrospinal fluid, and also in peripheral blood. In phase II trials in relapsing MS, monoclonal antibodies that target circulating CD20-positive B lymphocytes dramatically reduced disease activity. These beneficial effects occurred within weeks of treatment, indicating that a direct effect on B cells--and likely not on putative autoantibodies--was responsible. The discovery that depletion of B cells has an impact on MS biology enabled a paradigm shift in understanding how the inflammatory phase of MS develops, and will hopefully lead to development of increasingly selective therapies against culprit B cells and related humoral immune system pathways. More broadly, these studies illustrate how lessons learned from the bedside have unique power to inform translational research. They highlight the essential role of clinician scientists, currently endangered, who navigate the rocky and often unpredictable terrain between the worlds of clinical medicine and biomedical research.
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Affiliation(s)
- Stephen L Hauser
- Department of Neurology, University of California, San Francisco, USA
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291
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Dang AK, Jain RW, Craig HC, Kerfoot SM. B cell recognition of myelin oligodendrocyte glycoprotein autoantigen depends on immunization with protein rather than short peptide, while B cell invasion of the CNS in autoimmunity does not. J Neuroimmunol 2015; 278:73-84. [DOI: 10.1016/j.jneuroim.2014.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 11/12/2014] [Accepted: 12/08/2014] [Indexed: 10/24/2022]
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292
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Miyazaki Y, Niino M. Molecular targeted therapy against B cells in multiple sclerosis. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/cen3.12160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yusei Miyazaki
- Department of Clinical Research; Hokkaido Medical Center; Sapporo Japan
- Department of Neurology; Hokkaido Medical Center; Sapporo Japan
| | - Masaaki Niino
- Department of Clinical Research; Hokkaido Medical Center; Sapporo Japan
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293
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Ellwardt E, Zipp F. Molecular mechanisms linking neuroinflammation and neurodegeneration in MS. Exp Neurol 2014; 262 Pt A:8-17. [DOI: 10.1016/j.expneurol.2014.02.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 01/31/2014] [Accepted: 02/07/2014] [Indexed: 12/21/2022]
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294
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Tobin RP, Mukherjee S, Kain JM, Rogers SK, Henderson SK, Motal HL, Rogers MKN, Shapiro LA. Traumatic brain injury causes selective, CD74-dependent peripheral lymphocyte activation that exacerbates neurodegeneration. Acta Neuropathol Commun 2014; 2:143. [PMID: 25329434 PMCID: PMC4203873 DOI: 10.1186/s40478-014-0143-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/11/2014] [Indexed: 12/17/2022] Open
Abstract
Introduction Traumatic brain injury (TBI), a significant cause of death and disability, causes, as in any injury, an acute, innate immune response. A key component in the transition between innate and adaptive immunity is the processing and presentation of antigen by professional antigen presenting cells (APCs). Whether an adaptive immune response to brain injury is beneficial or detrimental is not known. Current efforts to understand the contribution of the immune system after TBI have focused on neuroinflammation and brain-infiltrating immune cells. Here, we characterize and target TBI-induced expansion of peripheral immune cells that may act as potential APCs. Because MHC Class II-associated invariant peptide (CLIP) is important for antigen processing and presentation, we engineered a competitive antagonist (CAP) for CLIP, and tested the hypothesis that peptide competition could reverse or prevent neurodegeneration after TBI. Results We show that after fluid percussion injury (FPI), peripheral splenic lymphocytes, including CD4+ and CD8+ T cells, regulatory T cells (Tregs), and γδ T cells, are increased in number within 24 hours after FPI. These increases were reversed by CAP treatment and this antagonism of CLIP also reduced neuroinflammation and neurodegeneration after TBI. Using a mouse deficient for the precursor of CLIP, CD74, we observed decreased peripheral lymphocyte activation, decreased neurodegeneration, and a significantly smaller lesion size following TBI. Conclusion Taken together, the data support the hypothesis that neurodegeneration following TBI is dependent upon antigen processing and presentation that requires CD74. Electronic supplementary material The online version of this article (doi:10.1186/s40478-014-0143-5) contains supplementary material, which is available to authorized users.
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295
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Chen D, Blazek M, Ireland S, Ortega S, Kong X, Meeuwissen A, Stowe A, Carter L, Wang Y, Herbst R, Monson NL. Single dose of glycoengineered anti-CD19 antibody (MEDI551) disrupts experimental autoimmune encephalomyelitis by inhibiting pathogenic adaptive immune responses in the bone marrow and spinal cord while preserving peripheral regulatory mechanisms. THE JOURNAL OF IMMUNOLOGY 2014; 193:4823-32. [PMID: 25281717 DOI: 10.4049/jimmunol.1401478] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Plasma cells and the autoreactive Abs they produce are suspected to contribute to the pathogenesis of multiple sclerosis, but recent attempts to target these components of humoral immunity have failed. MEDI551, an anti-CD19 Ab that depletes mature B cells including plasma cells may offer a compelling alternative that reduces pathogenic adaptive immune responses while sparing regulatory mechanisms. Indeed, our data demonstrate that a single dose of MEDI551, given before or during ongoing experimental autoimmune encephalomyelitis, disrupts development of the disease. Leukocyte infiltration into the spinal cord is significantly reduced, as well as short-lived and long-lived autoreactive CD138(+) plasma cells in the spleen and bone marrow, respectively. In addition, potentially protective CD1d(hi)CD5(+) regulatory B cells show resistance to depletion, and myelin-specific Foxp3(+) regulatory T cells are expanded. Taken together, these results demonstrate that MEDI551 disrupts experimental autoimmune encephalomyelitis by inhibiting multiple proinflammatory components whereas preserving regulatory populations.
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Affiliation(s)
- Ding Chen
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Monica Blazek
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Sara Ireland
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Sterling Ortega
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Xiangmei Kong
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Anouk Meeuwissen
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Ann Stowe
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Laura Carter
- Department of Respiratory, Inflammation and Autoimmunity Research, MedImmune LLC, Gaithersburg, MD 20878; and
| | - Yue Wang
- Department of Respiratory, Inflammation and Autoimmunity Research, MedImmune LLC, Gaithersburg, MD 20878; and
| | - Ronald Herbst
- Department of Respiratory, Inflammation and Autoimmunity Research, MedImmune LLC, Gaithersburg, MD 20878; and
| | - Nancy L Monson
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390; Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390
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296
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Krishnan S, Bakker E, Lee C, Kissick HT, Ireland DJ, Beilharz MW. Successful combined intratumoral immunotherapy of established murine mesotheliomas requires B-cell involvement. J Interferon Cytokine Res 2014; 35:100-7. [PMID: 25259549 DOI: 10.1089/jir.2014.0054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Combination immunotherapy has resulted in a number of impressive outcomes in mouse models and clinical settings. In this study, we report that a timed triple immunotherapy (TTI) protocol using 3 agonist antibodies (anti-CD25mAb, anti-TGF-βmAb, and anti-CTLA-4mAb) produced complete clearance of established AB1 murine mesothelioma tumors. Combining all 3 agonist antibodies into a single cocktail for intratumoral injection was as effective as the TTI in tumor eradication. Cured mice showed elevated levels of tumor-specific IgG antibodies at 95 days posttreatment. Time-course studies of tumor clearance showed (1) that IgG levels were not elevated during tumor clearance and (2) that B-cell numbers were increased in the tumor-draining lymph nodes and spleens during tumor clearance. Finally, employment of B-cell knockout mice indicated a significant role for B cells in the successful eradication of the established tumors by the triple immunotherapy cocktail.
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Affiliation(s)
- Shruti Krishnan
- 1 School of Pathology and Laboratory Medicine (M502), Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia , Crawley, Australia
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297
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Ben-Nun A, Kaushansky N, Kawakami N, Krishnamoorthy G, Berer K, Liblau R, Hohlfeld R, Wekerle H. From classic to spontaneous and humanized models of multiple sclerosis: impact on understanding pathogenesis and drug development. J Autoimmun 2014; 54:33-50. [PMID: 25175979 DOI: 10.1016/j.jaut.2014.06.004] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 06/04/2014] [Indexed: 12/25/2022]
Abstract
Multiple sclerosis (MS), a demyelinating disease of the central nervous system (CNS), presents as a complex disease with variable clinical and pathological manifestations, involving different pathogenic pathways. Animal models, particularly experimental autoimmune encephalomyelitis (EAE), have been key to deciphering the pathophysiology of MS, although no single model can recapitulate the complexity and diversity of MS, or can, to date, integrate the diverse pathogenic pathways. Since the first EAE model was introduced decades ago, multiple classic (induced), spontaneous, and humanized EAE models have been developed, each recapitulating particular aspects of MS pathogenesis. The advances in technologies of genetic ablation and transgenesis in mice of C57BL/6J background and the development of myelin-oligodendrocyte glycoprotein (MOG)-induced EAE in C57BL/6J mice yielded several spontaneous and humanized EAE models, and resulted in a plethora of EAE models in which the role of specific genes or cell populations could be precisely interrogated, towards modeling specific pathways of MS pathogenesis/regulation in MS. Collectively, the numerous studies on the different EAE models contributed immensely to our basic understanding of cellular and molecular pathways in MS pathogenesis as well as to the development of therapeutic agents: several drugs available today as disease modifying treatments were developed from direct studies on EAE models, and many others were tested or validated in EAE. In this review, we discuss the contribution of major classic, spontaneous, and humanized EAE models to our understanding of MS pathophysiology and to insights leading to devising current and future therapies for this disease.
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Affiliation(s)
- Avraham Ben-Nun
- Department of Immunology, The Weizmann Institute of Science, 234 Herzl St. Rehovot, 7610001, Israel.
| | - Nathali Kaushansky
- Department of Immunology, The Weizmann Institute of Science, 234 Herzl St. Rehovot, 7610001, Israel.
| | - Naoto Kawakami
- Department of Neuroimmunology, Max Planck Institute of Neurobiology, Martinsried 82152, Germany; Institute of Clinical Neuroimmunology, Ludwig-Maximilians-University, 81377 Munich, Germany.
| | | | - Kerstin Berer
- Department of Neuroimmunology, Max Planck Institute of Neurobiology, Martinsried 82152, Germany.
| | | | - Reinhard Hohlfeld
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians-University, 81377 Munich, Germany.
| | - Hartmut Wekerle
- Department of Neuroimmunology, Max Planck Institute of Neurobiology, Martinsried 82152, Germany.
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298
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Kashi VP, Ortega SB, Karandikar NJ. Neuroantigen-specific autoregulatory CD8+ T cells inhibit autoimmune demyelination through modulation of dendritic cell function. PLoS One 2014; 9:e105763. [PMID: 25144738 PMCID: PMC4140828 DOI: 10.1371/journal.pone.0105763] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 07/24/2014] [Indexed: 01/29/2023] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) is a well-established murine model of multiple sclerosis, an immune-mediated demyelinating disorder of the central nervous system (CNS). We have previously shown that CNS-specific CD8+ T cells (CNS-CD8+) ameliorate EAE, at least in part through modulation of CNS-specific CD4+ T cell responses. In this study, we show that CNS-CD8+ also modulate the function of CD11c+ dendritic cells (DC), but not other APCs such as CD11b+ monocytes or B220+ B cells. DC from mice receiving either myelin oligodendrocyte glycoprotein-specific CD8+ (MOG-CD8+) or proteolipid protein-specific CD8+ (PLP-CD8+) T cells were rendered inefficient in priming T cell responses from naïve CD4+ T cells (OT-II) or supporting recall responses from CNS-specific CD4+ T cells. CNS-CD8+ did not alter DC subset distribution or MHC class II and CD86 expression, suggesting that DC maturation was not affected. However, the cytokine profile of DC from CNS-CD8+ recipients showed lower IL-12 and higher IL-10 production. These functions were not modulated in the absence of immunization with CD8-cognate antigen, suggesting an antigen-specific mechanism likely requiring CNS-CD8-DC interaction. Interestingly, blockade of IL-10 in vitro rescued CD4+ proliferation and in vivo expression of IL-10 was necessary for the suppression of EAE by MOG-CD8+. These studies demonstrate a complex interplay between CNS-specific CD8+ T cells, DC and pathogenic CD4+ T cells, with important implications for therapeutic interventions in this disease.
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Affiliation(s)
- Venkatesh P. Kashi
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Sterling B. Ortega
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Nitin J. Karandikar
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- * E-mail:
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299
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Shetty A, Gupta SG, Varrin-Doyer M, Weber MS, Prod'homme T, Molnarfi N, Ji N, Nelson PA, Patarroyo JC, Schulze-Topphoff U, Fogal SE, Forsthuber T, Sobel RA, Bernard CCA, Slavin AJ, Zamvil SS. Immunodominant T-cell epitopes of MOG reside in its transmembrane and cytoplasmic domains in EAE. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2014; 1:e22. [PMID: 25340074 PMCID: PMC4202928 DOI: 10.1212/nxi.0000000000000022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 06/26/2014] [Indexed: 01/15/2023]
Abstract
Objective: Studies evaluating T-cell recognition of myelin oligodendrocyte glycoprotein (MOG) in multiple sclerosis (MS) and its model, experimental autoimmune encephalomyelitis (EAE), have focused mostly on its 117 amino acid (aa) extracellular domain, especially peptide (p) 35-55. We characterized T-cell responses to the entire 218 aa MOG sequence, including its transmembrane and cytoplasmic domains. Methods: T-cell recognition in mice was examined using overlapping peptides and intact full-length mouse MOG. EAE was evaluated by peptide immunization and by adoptive transfer of MOG epitope-specific T cells. Frequency of epitope-specific T cells was examined by ELISPOT. Results: Three T-cell determinants of MOG were discovered in its transmembrane and cytoplasmic domains, p119–132, p181–195, and p186–200. Transmembrane MOG p119-132 induced clinical EAE, CNS inflammation, and demyelination as potently as p35-55 in C57BL/6 mice and other H-2b strains. p119-128 contained its minimal encephalitogenic epitope. p119-132 did not cause disease in EAE-susceptible non-H-2b strains, including Biozzi, NOD, and PL/J. MOG p119-132–specific T cells produced Th1 and Th17 cytokines and transferred EAE to wild-type recipient mice. After immunization with full-length MOG, a significantly higher frequency of MOG-reactive T cells responded to p119-132 than to p35-55, demonstrating that p119-132 is an immunodominant encephalitogenic epitope. MOG p181-195 did not cause EAE, and MOG p181-195–specific T cells could not transfer EAE into wild-type or highly susceptible T- and B-cell–deficient mice. Conclusions: Transmembrane and cytoplasmic domains of MOG contain immunodominant T-cell epitopes in EAE. A CNS autoantigen can also contain nonpathogenic stimulatory T-cell epitopes. Recognition that a myelin antigen contains multiple encephalitogenic and nonencephalitogenic determinants may have implications for therapeutic development in MS.
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Affiliation(s)
- Aparna Shetty
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Sheena G Gupta
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Michel Varrin-Doyer
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Martin S Weber
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Thomas Prod'homme
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Nicolas Molnarfi
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Niannian Ji
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Patricia A Nelson
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Juan C Patarroyo
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Ulf Schulze-Topphoff
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Stephen E Fogal
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Thomas Forsthuber
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Raymond A Sobel
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Claude C A Bernard
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Anthony J Slavin
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
| | - Scott S Zamvil
- Department of Neurology and Program in Immunology (A.S., S.G.G., M.V.-D., T.P., N.M., P.A.N., J.C.P., U.S.-T., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Department of Immunology (N.J., T.F.), University of Texas at San Antonio; Boehringer Ingelheim (S.E.F., A.J.S.), Ridgefield, CT; Department of Pathology (R.A.S.), Stanford University, Stanford, CA; and Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. S.G.G. is currently at the Institute for Immunity Transplantation and Infection, Stanford University, Stanford, CA. T.P. is currently at Momenta Pharmaceuticals, Cambridge, MA. N.M. is currently at the Division of Neurology, Department of Clinical Neurosciences, Geneva University Hospital and the Department of Pathology and Immunology, Geneva Faculty of Medicine, University Medical Center, Geneva, Switzerland. J.C.P. is currently at Pfizer, Inc., Cambridge, MA
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Varrin-Doyer M, Shetty A, Spencer CM, Schulze-Topphoff U, Weber MS, Bernard CCA, Forsthuber T, Cree BAC, Slavin AJ, Zamvil SS. MOG transmembrane and cytoplasmic domains contain highly stimulatory T-cell epitopes in MS. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2014; 1:e20. [PMID: 25340072 PMCID: PMC4202926 DOI: 10.1212/nxi.0000000000000020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/08/2014] [Indexed: 01/01/2023]
Abstract
Objective: Recently, we reported that the 218 amino acid murine full-length myelin oligodendrocyte glycoprotein (MOG) contains novel T-cell epitopes p119-132, p181-195, and p186-200, located within its transmembrane and cytoplasmic domains, and that p119-132 is its immunodominant encephalitogenic T-cell epitope in mice. Here, we investigated whether the corresponding human MOG sequences contain T-cell epitopes in patients with multiple sclerosis (MS) and healthy controls (HC). Methods: Peripheral blood T cells from patients with MS and HC were examined for proliferation to MOG p119-130, p181-195, p186-200, and p35-55 by fluorescence-activated cell sorting analysis using carboxylfluorescein diacetate succinimidyl ester dilution assay. Intracellular production of proinflammatory cytokines was analyzed by flow cytometry. Results: MOG p119-130, p181-195, and p186-200 elicited significantly greater T-cell responses than p35-55 in patients with MS. T cells from patients with MS proliferated significantly more strongly to MOG p119-130 and p186-200 than did T cells from HC. Further, MOG p119-130–specific T cells exhibited Th17 polarization, suggesting this T-cell epitope may be relevant to MS pathogenesis. Conclusions: Transmembrane and cytoplasmic MOG domains contain potent T-cell epitopes in MS. Recognition of these determinants is important when evaluating T-cell responses to MOG in MS and may have implications for development of myelin antigen-based therapeutics.
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Affiliation(s)
- Michel Varrin-Doyer
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Aparna Shetty
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Collin M Spencer
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Ulf Schulze-Topphoff
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Martin S Weber
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Claude C A Bernard
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Thomas Forsthuber
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Bruce A C Cree
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Anthony J Slavin
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
| | - Scott S Zamvil
- Department of Neurology and Program in Immunology (M.V.-D., A.S., C.M.S., U.S.-T., B.A.C.C., S.S.Z.), University of California, San Francisco; Department of Neuropathology and Department of Neurology (M.S.W.), University Medical Center, Georg-August University, Göttingen, Germany; Multiple Sclerosis Research Group (C.C.A.B.), Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Department of Immunology (T.F.), University of Texas at San Antonio; and Boehringer Ingelheim (A.J.S.), Ridgefield, CT
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