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Teekaput C, Thiankhaw K, Chattipakorn N, Chattipakorn SC. Possible Roles of Extracellular Vesicles in the Pathogenesis and Interventions of Immune-Mediated Central Demyelinating Diseases. Exp Neurobiol 2024; 33:47-67. [PMID: 38724476 PMCID: PMC11089403 DOI: 10.5607/en24002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/16/2024] [Accepted: 04/28/2024] [Indexed: 05/15/2024] Open
Abstract
Multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD) are two of the most devastating immune-mediated central demyelinating disorders. NMOSD was once considered as a variant of MS until the discovery of an antibody specific to the condition. Despite both MS and NMOSD being considered central demyelinating disorders, their pathogenesis and clinical manifestations are distinct, however the exact mechanisms associated with each disease remain unclear. Extracellular vesicles (EVs) are nano-sized vesicles originating in various cells which serve as intercellular communicators. There is a large body of evidence to show the possible roles of EVs in the pathogenesis of several diseases, including the immune-mediated central demyelinating disorders. Various types of EVs are found across disease stages and could potentially be used as a surrogate marker, as well as acting by carrying a cargo of biochemical molecules. The possibility for EVs to be used as a next-generation targeted treatment for the immune-mediated central demyelinating disorders has been investigated. The aim of this review was to comprehensively identify, compile and discuss key findings from in vitro, in vivo and clinical studies. A summary of all findings shows that: 1) the EV profiles of MS and NMOSD differ from those of healthy individuals, 2) the use of EV markers as liquid biopsy diagnostic tools appears to be promising biomarkers for both MS and NMOSD, and 3) EVs are being studied as a potential targeted therapy for MS and NMOSD. Any controversial findings are also discussed in this review.
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Affiliation(s)
- Chutithep Teekaput
- Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kitti Thiankhaw
- Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Siriporn C. Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
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Komlakh K, Aghamiri SH, Farshadmoghadam H. The role and therapeutic applications of exosomes in multiple sclerosis disease. Clin Exp Pharmacol Physiol 2022; 49:1249-1256. [PMID: 35918850 DOI: 10.1111/1440-1681.13710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 07/23/2022] [Accepted: 07/31/2022] [Indexed: 01/31/2023]
Abstract
A range of the central nervous system (CNS) and immune cells are affected by multiple sclerosis (MS), a complex autoimmune disease of the CNS. Chronic neuroinflammation, demyelination, and neuronal death are all features of MS, but the disease's molecular mechanisms are unknown. Exosomes are small, membrane-bound extracellular vesicles with a crucial role in cell communication. They are stable in biological fluids and emerge from the cell membrane during endocytic internalization. It might be possible to recognize better the mechanisms involved in the development and progress of illnesses by understanding the variety of exosomal contents and their associated targets, like neurologic disorders. In this review, we sought to bring together important data on the biology of exosomes in MS and highlight discoveries on these nanoparticles' prognostic, diagnostic and therapeutic potential.
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Affiliation(s)
- Khalil Komlakh
- Department of Neurosurgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Hossein Aghamiri
- Department of Neurology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Farshadmoghadam
- Department of Pediatrics, Children Growth Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran
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McCombe PA, Greer JM. Effects of biological sex and pregnancy in experimental autoimmune encephalomyelitis: It's complicated. Front Immunol 2022; 13:1059833. [PMID: 36518769 PMCID: PMC9742606 DOI: 10.3389/fimmu.2022.1059833] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/03/2022] [Indexed: 11/29/2022] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) can be induced in many animal strains by inoculation with central nervous system antigens and adjuvant or by the passive transfer of lymphocytes reactive with these antigens and is widely used as an animal model for multiple sclerosis (MS). There are reports that female sex and pregnancy affect EAE. Here we review the effects of biological sex and the effects of pregnancy on the clinical features (including disease susceptibility) and pathophysiology of EAE. We also review reports of the possible mechanisms underlying these differences. These include sex-related differences in the immune system and in the central nervous system, the effects of hormones and the sex chromosomes and molecules unique to pregnancy. We also review sex differences in the response to factors that can modify the course of EAE. Our conclusion is that the effects of biological sex in EAE vary amongst animal models and should not be widely extrapolated. In EAE, it is therefore essential that studies looking at the effects of biological sex or pregnancy give full information about the model that is used (i.e. animal strain, sex, the inducing antigen, timing of EAE induction in relation to pregnancy, etc.). In addition, it would be preferable if more than one EAE model were used, to show if any observed effects are generalizable. This is clearly a field that requires further work. However, understanding of the mechanisms of sex differences could lead to greater understanding of EAE, and suggest possible therapies for MS.
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Demery-Poulos C, Romero R, Xu Y, Arenas-Hernandez M, Miller D, Tao L, Galaz J, Farias-Jofre M, Bhatti G, Garcia-Flores V, Seyerle M, Tarca AL, Gomez-Lopez N. Pregnancy imparts distinct systemic adaptive immune function. Am J Reprod Immunol 2022; 88:e13606. [PMID: 35989229 PMCID: PMC9648024 DOI: 10.1111/aji.13606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/05/2022] [Accepted: 07/25/2022] [Indexed: 11/28/2022] Open
Abstract
PROBLEM Pregnancy represents a state of systemic immune activation that is primarily driven by alterations in circulating innate immune cells. Recent studies have suggested that cellular adaptive immune components, T cells and B cells, also undergo changes throughout gestation. However, the phenotypes and functions of such adaptive immune cells are poorly understood. Herein, we utilized high-dimensional flow cytometry and functional assays to characterize T-cell and B-cell responses in pregnant and non-pregnant women. METHODS Peripheral blood mononuclear cells from pregnant (n = 20) and non-pregnant (n = 25) women were used for phenotyping of T-cell and B-cell subsets. T-cell proliferation and B-cell activation were assessed by flow cytometry after in vitro stimulation, and lymphocyte cytotoxicity was evaluated by using a cell-based assay. Statistical comparisons were performed with linear mixed-effects models. RESULTS Pregnancy was associated with modestly enhanced basal activation of peripheral CD4+ T cells. Both CD4+ and CD8+ T cells from pregnant women showed increased activation-induced proliferation; yet, a reduced proportion of these cells expressed activation markers compared to non-pregnant women. There were no differences in peripheral lymphocyte cytotoxicity between study groups. A greater proportion of B cells from pregnant women displayed memory-like and activated phenotypes, and such cells exhibited higher activation following stimulation. CONCLUSION Maternal circulating T cells and B cells display distinct responses during pregnancy. The former may reflect the unique capacity of T cells to respond to potential threats without undergoing aberrant activation, thereby preventing systemic inflammatory responses that can lead to adverse perinatal consequences.
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Affiliation(s)
- Catherine Demery-Poulos
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Roberto Romero
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan, USA
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, Michigan, USA
- Centerfor Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, USA
- Detroit Medical Center, Detroit, Michigan, USA
| | - Yi Xu
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Marcia Arenas-Hernandez
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Derek Miller
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Li Tao
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Jose Galaz
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
- Division of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marcelo Farias-Jofre
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
- Division of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gaurav Bhatti
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Valeria Garcia-Flores
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Megan Seyerle
- Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Adi L. Tarca
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
- Department of Computer Science, Wayne State University College of Engineering, Detroit, Michigan, USA
| | - Nardhy Gomez-Lopez
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University School of Medicine, Detroit, Michigan, USA
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Martire S, Montarolo F, Spadaro M, Perga S, Sforza ML, Marozio L, Frezet F, Bruno S, Chiabotto G, Deregibus MC, Camussi G, Botta G, Benedetto C, Bertolotto A. A First Phenotypic and Functional Characterization of Placental Extracellular Vesicles from Women with Multiple Sclerosis. Int J Mol Sci 2021; 22:ijms22062875. [PMID: 33809077 PMCID: PMC8001892 DOI: 10.3390/ijms22062875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 12/20/2022] Open
Abstract
Pregnancy is a unique situation of physiological immunomodulation, as well as a strong Multiple Sclerosis (MS) disease modulator whose mechanisms are still unclear. Both maternal (decidua) and fetal (trophoblast) placental cells secrete extracellular vesicles (EVs), which are known to mediate cellular communication and modulate the maternal immune response. Their contribution to the MS disease course during pregnancy, however, is unexplored. Here, we provide a first phenotypic and functional characterization of EVs isolated from cultures of term placenta samples of women with MS, differentiating between decidua and trophoblast. In particular, we analyzed the expression profile of 37 surface proteins and tested the functional role of placental EVs on mono-cultures of CD14+ monocytes and co-cultures of CD4+ T and regulatory T (Treg) cells. Results indicated that placental EVs are enriched for surface markers typical of stem/progenitor cells, and that conditioning with EVs from samples of women with MS is associated to a moderate decrease in the expression of proinflammatory cytokines by activated monocytes and in the proliferation rate of activated T cells co-cultured with Tregs. Overall, our findings suggest an immunomodulatory potential of placental EVs from women with MS and set the stage for a promising research field aiming at elucidating their role in MS remission.
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Affiliation(s)
- Serena Martire
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
- Correspondence: (S.M.); (F.M.)
| | - Francesca Montarolo
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, 10124 Turin, Italy
- Correspondence: (S.M.); (F.M.)
| | - Michela Spadaro
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
| | - Simona Perga
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
- Department of Neuroscience Rita Levi-Montalcini, University of Turin, 10124 Turin, Italy
| | - Maria Ludovica Sforza
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
| | - Luca Marozio
- Department of Surgical Sciences, Obstetrics and Gynaecology, University of Turin, 10124 Turin, Italy; (L.M.); (F.F.); (C.B.)
| | - Federica Frezet
- Department of Surgical Sciences, Obstetrics and Gynaecology, University of Turin, 10124 Turin, Italy; (L.M.); (F.F.); (C.B.)
| | - Stefania Bruno
- Department of Medical Sciences and Molecular Biotechnology Center, University of Turin, 10124 Turin, Italy; (S.B.); (G.C.); (G.C.)
| | - Giulia Chiabotto
- Department of Medical Sciences and Molecular Biotechnology Center, University of Turin, 10124 Turin, Italy; (S.B.); (G.C.); (G.C.)
| | - Maria Chiara Deregibus
- 2i3T Business Incubator and Technology Transfer, University of Turin, 10124 Turin, Italy;
| | - Giovanni Camussi
- Department of Medical Sciences and Molecular Biotechnology Center, University of Turin, 10124 Turin, Italy; (S.B.); (G.C.); (G.C.)
| | - Giovanni Botta
- Department of Pathology, Città della Salute e della Scienza di Torino, 10124 Turin, Italy;
| | - Chiara Benedetto
- Department of Surgical Sciences, Obstetrics and Gynaecology, University of Turin, 10124 Turin, Italy; (L.M.); (F.F.); (C.B.)
| | - Antonio Bertolotto
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy; (M.S.); (S.P.); (M.L.S.); (A.B.)
- Neurology-CRESM (Regional Reference Center for Multiple Sclerosis), AOU San Luigi Gonzaga, Orbassano, 10043 Turin, Italy
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Marostica G, Gelibter S, Gironi M, Nigro A, Furlan R. Extracellular Vesicles in Neuroinflammation. Front Cell Dev Biol 2021; 8:623039. [PMID: 33553161 PMCID: PMC7858658 DOI: 10.3389/fcell.2020.623039] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/21/2020] [Indexed: 12/18/2022] Open
Abstract
Extracellular vesicles (EVs) are a heterogenous group of membrane-bound particles that play a pivotal role in cell–cell communication, not only participating in many physiological processes, but also contributing to the pathogenesis of several diseases. The term EVs defines many and different vesicles based on their biogenesis and release pathway, including exosomes, microvesicles (MVs), and apoptotic bodies. However, their classification, biological function as well as protocols for isolation and detection are still under investigation. Recent evidences suggest the existence of novel subpopulations of EVs, increasing the degree of heterogeneity between EV types and subtypes. EVs have been shown to have roles in the CNS as biomarkers and vehicles of drugs and other therapeutic molecules. They are known to cross the blood brain barrier, allowing CNS EVs to be detectable in peripheral fluids, and their cargo may give information on parental cells and the pathological process they are involved in. In this review, we summarize the knowledge on the function of EVs in the pathogenesis of multiple sclerosis (MS) and discuss recent evidences for their potential applications as diagnostic biomarkers and therapeutic targets.
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Affiliation(s)
- Giulia Marostica
- Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Stefano Gelibter
- Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Maira Gironi
- Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Annamaria Nigro
- Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Roberto Furlan
- Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
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Nekrasova I, Shirshev S. Estriol in regulation of cell-mediated immune reactions in multiple sclerosis. J Neuroimmunol 2020; 349:577421. [PMID: 33032016 DOI: 10.1016/j.jneuroim.2020.577421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/14/2022]
Abstract
The effect of pregnancy hormone estriol (E3) on innate and adaptive immunity cells functions in patients with multiple sclerosis (MS) in comparison with healthy donors (HD) was studied. E3 inhibited phagocytic activity of neutrophils and enhanced monocytes IDO activity. Treg percentage increased and number of Th17 and iNKT cells decreased under E3 influence. At the same time, E3 stimulated production of IL-10 and inhibited secretion of IL-17. The hormonal effects were realized on the cells of both HD and MS patients. Thus, the MS amelioration during pregnancy may be related to E3 influence.
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Affiliation(s)
- Irina Nekrasova
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva str., 13, 614081 Perm, Russia.
| | - Sergei Shirshev
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva str., 13, 614081 Perm, Russia
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Krysko KM, Graves JS, Dobson R, Altintas A, Amato MP, Bernard J, Bonavita S, Bove R, Cavalla P, Clerico M, Corona T, Doshi A, Fragoso Y, Jacobs D, Jokubaitis V, Landi D, Llamosa G, Longbrake EE, Maillart E, Marta M, Midaglia L, Shah S, Tintore M, van der Walt A, Voskuhl R, Wang Y, Zabad RK, Zeydan B, Houtchens M, Hellwig K. Sex effects across the lifespan in women with multiple sclerosis. Ther Adv Neurol Disord 2020; 13:1756286420936166. [PMID: 32655689 PMCID: PMC7331774 DOI: 10.1177/1756286420936166] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 05/28/2020] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is an autoimmune inflammatory demyelinating central nervous system disorder that is more common in women, with onset often during reproductive years. The female:male sex ratio of MS rose in several regions over the last century, suggesting a possible sex by environmental interaction increasing MS risk in women. Since many with MS are in their childbearing years, family planning, including contraceptive and disease-modifying therapy (DMT) counselling, are important aspects of MS care in women. While some DMTs are likely harmful to the developing fetus, others can be used shortly before or until pregnancy is confirmed. Overall, pregnancy decreases risk of MS relapses, whereas relapse risk may increase postpartum, although pregnancy does not appear to be harmful for long-term prognosis of MS. However, ovarian aging may contribute to disability progression in women with MS. Here, we review sex effects across the lifespan in women with MS, including the effect of sex on MS susceptibility, effects of pregnancy on MS disease activity, and management strategies around pregnancy, including risks associated with DMT use before and during pregnancy, and while breastfeeding. We also review reproductive aging and sexual dysfunction in women with MS.
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Affiliation(s)
- Kristen M Krysko
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, 675 Nelson Rising Lane, Suite 221, San Francisco, CA 94158, USA
| | - Jennifer S Graves
- Department of Neurosciences, University of California San Diego, UCSD ACTRI, La Jolla, CA, USA
| | - Ruth Dobson
- Preventive Neurology Unit, Wolfson Institute of Preventive Neurology, Queen Mary University of London, London, UK
| | - Ayse Altintas
- Department of Neurology, School of Medicine, Koc University, Istanbul, Turkey
| | - Maria Pia Amato
- Department NEUROFARBA, Section of Neurosciences, University of Florence, Florence, Italy
| | - Jacqueline Bernard
- Department of Neurology, Oregon Health Science University, Portland, OR, USA
| | - Simona Bonavita
- Department of Advanced Medical and Surgical Sciences, University of Campania, "Luigi Vanvitelli", Naples, Italy
| | - Riley Bove
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, San Francisco CA, USA
| | - Paola Cavalla
- Department of Neuroscience and Mental Health, City of Health and Science University Hospital of Torino, Turin, Italy
| | - Marinella Clerico
- Department of Clinical and Biological Sciences, University of Torino, San Luigi Gonzaga Hospital, Orbassano, Turin, Italy
| | - Teresa Corona
- Clinical Laboratory of Neurodegenerative Disease, National Institute of Neurology and Neurosurgery of Mexico, Mexico City, Mexico
| | - Anisha Doshi
- Department of Neuroinflammation, Queen Square Multiple Sclerosis Centre, University College London (UCL) Institute of Neurology, London, UK
| | - Yara Fragoso
- Multiple Sclerosis & Headache Research Institute, Santos, SP, Brazil
| | - Dina Jacobs
- Department of Neurology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Vilija Jokubaitis
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia
| | - Doriana Landi
- Department of Systems Medicine, Multiple Sclerosis Center and Research Unit, Tor Vergata University and Hospital, Rome, Italy
| | | | | | | | - Monica Marta
- Neurosciences and Trauma Centre, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Luciana Midaglia
- Department of Neurology-Neuroimmunology, Multiple Sclerosis Centre of Catalonia, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Suma Shah
- Department of Neurology, Duke University, Durham, NC, USA
| | - Mar Tintore
- Department of Neurology-Neuroimmunology, Multiple Sclerosis Centre of Catalonia, Vall d'Hebron University Hospital, Barcelona, Spain
| | | | - Rhonda Voskuhl
- Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
| | - Yujie Wang
- Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
| | - Rana K Zabad
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Burcu Zeydan
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Maria Houtchens
- Department of Neurology, Partners MS Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kerstin Hellwig
- Department of Neurology, St. Josef Hospital, Ruhr University Bochum, Bochum, Germany
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Domingues HS, Falcão AM, Mendes-Pinto I, Salgado AJ, Teixeira FG. Exosome Circuitry During (De)(Re)Myelination of the Central Nervous System. Front Cell Dev Biol 2020; 8:483. [PMID: 32612996 PMCID: PMC7308472 DOI: 10.3389/fcell.2020.00483] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Reciprocal neuron-glia cell communication is fundamental for the proper function of the nervous system. Oligodendrocytes are the myelinating cells of the central nervous system (CNS) that insulate and provide trophic support to neurons. This effective interaction is crucial not only for myelination but also for long-term axonal survival and neural connectivity. In recent years, exosomes have been portrayed as key players in intercellular interaction in the context of the healthy and diseased CNS. They act as communicating vehicles, true attachés operating between neurons and glial cells. Despite the complex exosome circuitry within the nervous system, experimental evidence supports the role of exosomes in modulating myelination. Oligodendrocytes secrete exosomes in response to neuronal signals in an electric activity-dependent manner. These released exosomes are then internalized by neurons, contributing to their integrity and activity. In turn, neurons secrete exosomes to control the communication between them and with myelinating cells in order to regulate synaptic function in neuronal development, myelin maintenance, and neuroregeneration. In this review, we provide a critical view of the current understanding on how exosomes, either from CNS-resident cells or from the periphery, contribute to the formation and maintenance of myelin and, additionally, on how the differential content of exosomes in normal and pathological conditions foresees the use of these nanovesicles as putative diagnostic and/or therapeutical agents in white matter degeneration-associated diseases.
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Affiliation(s)
- Helena S Domingues
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal.,International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - Ana Mendanha Falcão
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Inês Mendes-Pinto
- International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - António J Salgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Fábio G Teixeira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
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11
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The Adaptive Immune System in Multiple Sclerosis: An Estrogen-Mediated Point of View. Cells 2019; 8:cells8101280. [PMID: 31635066 PMCID: PMC6829884 DOI: 10.3390/cells8101280] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/09/2019] [Accepted: 10/18/2019] [Indexed: 12/11/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic central nervous system inflammatory disease that leads to demyelination and neurodegeneration. The third trimester of pregnancy, which is characterized by high levels of estrogens, has been shown to be associated with reduced relapse rates compared with the rates before pregnancy. These effects could be related to the anti-inflammatory properties of estrogens, which orchestrate the reshuffling of the immune system toward immunotolerance to allow for fetal growth. The action of these hormones is mediated by the transcriptional regulation activity of estrogen receptors (ERs). Estrogen levels and ER expression define a specific balance of immune cell types. In this review, we explore the role of estradiol (E2) and ERs in the adaptive immune system, with a focus on estrogen-mediated cellular, molecular, and epigenetic mechanisms related to immune tolerance and neuroprotection in MS. The epigenome dynamics of immune systems are described as key molecular mechanisms that act on the regulation of immune cell identity. This is a completely unexplored field, suggesting a future path for more extensive research on estrogen-induced coregulatory complexes and molecular circuitry as targets for therapeutics in MS.
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12
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Qiu K, He Q, Chen X, Liu H, Deng S, Lu W. Pregnancy-Related Immune Changes and Demyelinating Diseases of the Central Nervous System. Front Neurol 2019; 10:1070. [PMID: 31649614 PMCID: PMC6794637 DOI: 10.3389/fneur.2019.01070] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/23/2019] [Indexed: 12/31/2022] Open
Abstract
Demyelinating diseases of the central nervous system comprise a heterogeneous group of autoimmune disorders characterized by myelin loss with relative sparing of axons occurring on a background of inflammation. Some of the most common demyelinating diseases are multiple sclerosis, acute disseminated encephalomyelitis, and neuromyelitis optica spectrum disorders. Besides showing clinical, radiological, and histopathological features that complicate their diagnosis, demyelinating diseases often involve different immunological processes that produce distinct inflammatory patterns. Evidence of demyelination diseases derives mostly from animal studies of experimental autoimmune encephalomyelitis (EAE), a model that relies on direct antibody–antigen interactions induced by encephalitogenic T cells. Pregnancy is characterized by non-self-recognition, immunomodulatory changes and an altered Th1/Th2 balance, generally considered a Th2-type immunological state that protects the mother from infections. During pregnancy, the immune response of patients with autoimmune disease complicated with pregnancy is different. Immune tolerance in pregnancy may affect the course of some diseases, which may reach remission or be exacerbated. In this review, we summarize current knowledge on the immune status during pregnancy and discuss the relationship between pregnancy-related immune changes and demyelinating diseases of the central nervous system.
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Affiliation(s)
- Ke Qiu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiang He
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiqian Chen
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui Liu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shuwen Deng
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wei Lu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
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13
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Engler JB, Heckmann NF, Jäger J, Gold SM, Friese MA. Pregnancy Enables Expansion of Disease-Specific Regulatory T Cells in an Animal Model of Multiple Sclerosis. THE JOURNAL OF IMMUNOLOGY 2019; 203:1743-1752. [PMID: 31444265 DOI: 10.4049/jimmunol.1900611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/24/2019] [Indexed: 12/12/2022]
Abstract
Disease activity of autoimmune disorders such as multiple sclerosis and its mouse model experimental autoimmune encephalomyelitis (EAE) is temporarily suppressed by pregnancy. However, whether disease amelioration is due to nonspecific immunomodulation or mediated by Ag-specific regulation of disease-causing conventional T cells (Tcon) and immunosuppressive regulatory T cells (Tregs) remains elusive. In the current study, we systematically analyzed changes of the TCRβ repertoire driven by EAE and pregnancy using TCR sequencing. We demonstrate that EAE, but not pregnancy, robustly increased TCR repertoire clonality in both peripheral Tcon and Treg. Notably, pregnancy was required for the expansion of Treg harboring the dominant EAE-associated TRBV13-2 chain and increased the frequency of EAE-associated clonotypes within the Treg compartment. Our findings indicate that pregnancy supports the expansion of Treg clonotypes that are equipped to recognize EAE-associated Ags. These Treg are thereby particularly suited to control corresponding encephalitogenic Tcon responses and likely contribute to pregnancy-associated protection in autoimmunity.
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Affiliation(s)
- Jan Broder Engler
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Nina F Heckmann
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Jan Jäger
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Stefan M Gold
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany.,Klinik für Psychiatrie und Psychotherapie, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, 12203 Berlin, Germany; and.,Medizinische Klinik mit Schwerpunkt Psychosomatik, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, 12203 Berlin, Germany
| | - Manuel A Friese
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany;
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14
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Kim DH, Park HJ, Park HS, Lee JU, Ko C, Gye MC, Choi JM. Estrogen receptor α in T cells suppresses follicular helper T cell responses and prevents autoimmunity. Exp Mol Med 2019; 51:1-9. [PMID: 30988419 PMCID: PMC6465332 DOI: 10.1038/s12276-019-0237-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 12/24/2018] [Accepted: 12/26/2018] [Indexed: 11/09/2022] Open
Abstract
Estrogen receptor alpha (ERα) is a sex hormone nuclear receptor that regulates various physiological events, including the immune response. Although there have been some recent studies on ERα regarding subsets of T cells, such as Th1, Th2, Th17, and Treg cells, its role in follicular helper T (TFH) cells has not yet been elucidated. To determine whether ERα controls TFH response and antibody production, we generated T cell-specific ERα knockout (KO) mice by utilizing the CD4-Cre/ERα flox system (CD4-ERα KO) and then analyzed their phenotype. At approximately 1 year of age, CD4-ERα KO mice spontaneously showed mild autoimmunity with increased autoantibody production and CD4+CD44+CXCR5+Bcl-6+ TFH cells in the mesenteric lymph nodes and spleen. We next immunized 6-8-week-old CD4-ERα KO mice with sheep red blood cells (SRBCs), which resulted in an increased proportion of TFH cells and germinal center (GC) responses. In addition, 17β-estradiol (E2) treatment decreased TFH responses in wild-type mice and suppressed the mRNA expression of Bcl-6 and IL-21. Finally, we confirmed that the production of high-affinity antigen-specific antibodies and isotype class switching induced by NP-conjugated ovalbumin immunization were elevated in CD4-ERα KO mice under sufficient estrogen conditions. These results collectively demonstrate that the female sex hormone receptor ERα inhibits the TFH cell response and GC reaction to control autoantibody production, which was related to estrogen signaling and autoimmunity.
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Affiliation(s)
- Do-Hyun Kim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hong-Jai Park
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Hyeon-Soo Park
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jae-Ung Lee
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - CheMyong Ko
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana Champaign, Urbana, IL, 61802, USA
| | - Myung Chan Gye
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea. .,Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
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15
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Anel A, Gallego-Lleyda A, de Miguel D, Naval J, Martínez-Lostao L. Role of Exosomes in the Regulation of T-cell Mediated Immune Responses and in Autoimmune Disease. Cells 2019; 8:cells8020154. [PMID: 30759880 PMCID: PMC6406439 DOI: 10.3390/cells8020154] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/24/2019] [Accepted: 02/11/2019] [Indexed: 01/01/2023] Open
Abstract
: T-cell mediated immune responses should be regulated to avoid the development of autoimmune or chronic inflammatory diseases. Several mechanisms have been described to regulate this process, namely death of overactivated T cells by cytokine deprivation, suppression by T regulatory cells (Treg), induction of expression of immune checkpoint molecules such as CTLA-4 and PD-1, or activation-induced cell death (AICD). In addition, activated T cells release membrane microvesicles called exosomes during these regulatory processes. In this review, we revise the role of exosome secretion in the different pathways of immune regulation described to date and its importance in the prevention or development of autoimmune disease. The expression of membrane-bound death ligands on the surface of exosomes during AICD or the more recently described transfer of miRNA or even DNA inside T-cell exosomes is a molecular mechanism that will be analyzed.
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Affiliation(s)
- Alberto Anel
- Immunity, Cancer & Stem Cells Group, Department of Biochemistry and Molecular and Cell Biology, Faculty of Sciences, Campus San Francisco Sq., University of Zaragoza and Aragón Health Research Institute (IIS Aragón), E-50009 Zaragoza, Spain.
| | - Ana Gallego-Lleyda
- Department of Biochemistry and Molecular and Cell Biology, Faculty of Sciences, Campus San Francisco Sq., University of Zaragoza and Aragón Health Research Institute (IIS Aragón), E-50009 Zaragoza, Spain.
| | - Diego de Miguel
- Centre for Cell Death, Cancer and Inflammation (CCCI), UCL Cancer Institute, University College London, Gower St, Bloomsbury, WC1E 6BT London, UK.
| | - Javier Naval
- Immunity, Cancer & Stem Cells Group, Department of Biochemistry and Molecular and Cell Biology, Faculty of Sciences, Campus San Francisco Sq., University of Zaragoza and Aragón Health Research Institute (IIS Aragón), E-50009 Zaragoza, Spain.
| | - Luis Martínez-Lostao
- Immunology Department, Lozano Blesa Clinical Hospital, and Aragón Health Research Institute (IIS Aragón), E-50009 Zaragoza, Spain.
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16
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McCombe PA. The Short and Long-Term Effects of Pregnancy on Multiple Sclerosis and Experimental Autoimmune Encephalomyelitis. J Clin Med 2018; 7:jcm7120494. [PMID: 30486504 PMCID: PMC6306813 DOI: 10.3390/jcm7120494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/21/2018] [Accepted: 11/21/2018] [Indexed: 02/07/2023] Open
Abstract
The role of pregnancy in multiple sclerosis (MS) is of importance because many patients with MS are young women in the childbearing age who require information to inform their reproductive decisions. Pregnancy is now well-known to be associated with fewer relapses of MS and reduced activity of autoimmune encephalomyelitis (EAE). However, in women with multiple sclerosis, this benefit is not always sufficient to protect against a rebound of disease activity if disease-modulating therapy is ceased for pregnancy. There is concern that use of assisted reproductive therapies can be associated with relapses of MS, but more data are required. It is thought that the beneficial effects of pregnancy are due to the pregnancy-associated changes in the maternal immune system. There is some evidence of this in human studies and studies of EAE. There is also evidence that having been pregnant leads to better long-term outcome of MS. The mechanism for this is not fully understood but it could result from epigenetic changes resulting from pregnancy or parenthood. Further studies of the mechanisms of the beneficial effects of pregnancy could provide information that might be used to produce new therapies.
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Affiliation(s)
- Pamela A McCombe
- The University of Queensland, Centre for Clinical Research, Brisbane, QLD 4029, Australia.
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17
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Jones K, Bryant S, Luo J, Kiesler P, Koontz S, Warren J, Malech H, Kang E, Dveksler G. Recombinant Pregnancy-Specific Glycoprotein 1 Has a Protective Role in a Murine Model of Acute Graft-versus-Host Disease. Biol Blood Marrow Transplant 2018; 25:193-203. [PMID: 30253241 DOI: 10.1016/j.bbmt.2018.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 09/13/2018] [Indexed: 12/23/2022]
Abstract
Acute graft-versus-host disease (aGVHD) is an immune-mediated reaction that can occur after hematopoietic stem cell transplantation in which donor T cells recognize the host antigens as foreign, destroying host tissues. Establishment of a tolerogenic immune environment while preserving the immune response to infectious agents is required for successful bone marrow transplantation. Pregnancy-specific glycoprotein 1 (PSG1), which is secreted by the human placenta into the maternal circulation throughout pregnancy, likely plays a role in maintaining immunotolerance to prevent rejection of the fetus by the maternal immune system. We have previously shown that PSG1 activates the latent form of transforming growth factor β1 (TGF-β), a cytokine essential for the differentiation of tolerance-inducing CD4+FoxP3+ regulatory T cells (Tregs). Consistent with this observation, treatment of naïve murine T cells with PSG1 resulted in a significant increase in FoxP3+ cells that was blocked by a TGF-β receptor I inhibitor. We also show here that PSG1 can increase the availability of active TGF-β in vivo. As the role of CD4+FoxP3+ cells in the prevention of aGVHD is well established, we tested whether PSG1 has beneficial effects in a murine aGHVD transplantation model. PSG1-treated mice had reduced numbers of tissue-infiltrating inflammatory CD3+ T cells and had increased expression of FoxP3 in T cells compared with vehicle-treated mice. In addition, administration of PSG1 significantly inhibited aGVHD-associated weight loss and mortality. On the other hand, administration of PSG1 was less effective in managing aGVHD in the presence of an alloimmune reaction against a malignancy in a graft-versus-leukemia experimental model. Combined, this data strongly suggests that PSG1 could be a promising treatment option for patients with aGVHD following bone marrow transplantation for a nonmalignant condition, such as an autoimmune disorder or a genetic immunodeficiency.
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Affiliation(s)
- Karlie Jones
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Sarah Bryant
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jian Luo
- Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, California
| | - Patricia Kiesler
- Mucosal Immunity Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Sherry Koontz
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - James Warren
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Harry Malech
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Elizabeth Kang
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Gabriela Dveksler
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
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18
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Nair S, Salomon C. Extracellular vesicles and their immunomodulatory functions in pregnancy. Semin Immunopathol 2018; 40:425-437. [PMID: 29616307 DOI: 10.1007/s00281-018-0680-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/19/2018] [Indexed: 12/15/2022]
Abstract
Extracellular vesicles (EVs) are membrane-bound vesicles released into the extracellular space by almost all types of cells. EVs can cross the physiological barriers, and a variety of biological fluids are enriched in them. EVs are a heterogeneous population of vesicles, including exosomes, microvesicles, and apoptotic bodies. The different subpopulations of vesicles can be differentiated by size and origin, in which exosomes (~100 nm and from endocytic origin) are the most studied so far. EVs have essential roles in cell-to-cell communication and are critical modulators of immune response under normal and pathological conditions. Pregnancy is a unique situation of immune-modulation in which the maternal immune system protects the fetus from allogenic rejection and maintains the immunosurveillance. The placenta is a vital organ that performs a multitude of functions to support the pregnancy. The EVs derived from the human placenta have crucial roles in regulating the maternal immune response for successful pregnancy outcome. Placenta-derived vesicles perform a myriad of functions like suppression of immune reaction to the developing fetus and establishment and maintenance of a systemic inflammatory response to combat infectious intruders. A fine-tuning of these mechanisms is quintessential for successful completion of pregnancy and healthy outcome for mother and fetus. Dysregulation in the mechanisms mentioned above can lead to several pregnancy disorders. In this review, we summarize the current literature regarding the critical roles played by the EVs in immunomodulation during pregnancy with particular attention to the placenta-derived exosomes.
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Affiliation(s)
- Soumyalekshmi Nair
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women's Hospital, The University of Queensland, Building 71/918, Brisbane, Queensland, 4029, Australia
| | - Carlos Salomon
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women's Hospital, The University of Queensland, Building 71/918, Brisbane, Queensland, 4029, Australia. .,Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, University of Concepción, Concepción, Chile.
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19
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Welton JL, Loveless S, Stone T, von Ruhland C, Robertson NP, Clayton A. Cerebrospinal fluid extracellular vesicle enrichment for protein biomarker discovery in neurological disease; multiple sclerosis. J Extracell Vesicles 2017; 6:1369805. [PMID: 28959386 PMCID: PMC5614217 DOI: 10.1080/20013078.2017.1369805] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 08/15/2017] [Indexed: 12/20/2022] Open
Abstract
The discovery of disease biomarkers, along with the use of “liquid biopsies” as a minimally invasive source of biomarkers, continues to be of great interest. In inflammatory diseases of the central nervous system (CNS), cerebrospinal fluid (CSF) is the most obvious biofluid source. Extracellular vesicles (EVs) are also present in CSF and are thought to be potential “biomarker treasure chests”. However, isolating these CSF-derived EVs remains challenging. This small-scale pilot study developed and tested a protocol to enrich for CSF-EVs, both in relapsing remitting multiple sclerosis (RRMS) CSF and controls. These were subsequently compared, using an aptamer based proteomics array, SOMAscan™. EVs were enriched from RRMS patient (n = 4) and non-demyelinating control (idiopathic intracranial hypertension (IIH) (n = 3)) CSF using precipitation and mini size-exclusion chromatography (SEC). EV-enriched fractions were selected using pre-defined EV characteristics, including increased levels of tetraspanins. EVs and paired CSF were analysed by SOMAscan™, providing relative abundance data for 1128 proteins. CSF-EVs were characterised, revealing exosome-like features: rich in tetraspanins CD9 and CD81, size ~100 nm, and exosome-like morphology by TEM. Sufficient quantities of, SOMAscan™ compatible, EV material was obtained from 5 ml CSF for proteomics analysis. Overall, 348 and 580 proteins were identified in CSF-EVs and CSF, respectively, of which 50 were found to be significantly (t-test) and exclusively enriched in RRMS CSF-EVs. Selected proteins, Plasma kallikrein and Apolipoprotein-E4, were further validated by western blot and appeared increased in CSF-EVs compared to CSF. Functional enrichment analysis of the 50 enriched proteins revealed strong associations with biological processes relating to MS pathology and also extracellular regions, consistent with EV enrichment. This pilot study demonstrates practicality for EV enrichment in CSF derived from patients with MS and controls, allowing detailed analysis of protein profiles that may offer opportunities to identify novel biomarkers and therapeutic approaches in CNS inflammatory diseases.
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Affiliation(s)
- Joanne L Welton
- Department of Biomedical Sciences, Cardiff School of Health Sciences, Cardiff Metropolitan University, Cardiff, UK.,Division of Cancer and Genetics, School of Medicine, Cardiff University, Velindre Cancer Centre, Cardiff, UK.,Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, University Hospital of Wales, Cardiff, UK
| | - Samantha Loveless
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, University Hospital of Wales, Cardiff, UK
| | - Timothy Stone
- Central Biotechnology Services, Cardiff University, School of Medicine, Cardiff, UK
| | - Chris von Ruhland
- Central Biotechnology Services, Cardiff University, School of Medicine, Cardiff, UK
| | - Neil P Robertson
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, University Hospital of Wales, Cardiff, UK
| | - Aled Clayton
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Velindre Cancer Centre, Cardiff, UK
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20
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Selmaj I, Mycko MP, Raine CS, Selmaj KW. The role of exosomes in CNS inflammation and their involvement in multiple sclerosis. J Neuroimmunol 2017; 306:1-10. [PMID: 28385180 DOI: 10.1016/j.jneuroim.2017.02.002] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/03/2017] [Accepted: 02/03/2017] [Indexed: 12/19/2022]
Abstract
Multiple sclerosis (MS) is a putative autoimmune disease of the central nervous system (CNS) in which autoreactive immune cells recognizing myelin antigens lead to demyelination and axonal injury. Mechanisms relevant to the pathogenesis of MS have not been fully elucidated, particularly those underlying initiation of immune system dysfunction. For example, it is not known how reactivity against CNS components is generated within the peripheral immune system. In this review, we propose that a significant contribution to the immunoregulatory events may derive from a cell-to-cell communication system involving the production, secretion and transfer of extracellular vesicles known as exosomes. Herein, we discuss in detail the biogenesis and roles of these cell surface-generated vesicles from the standpoint of receptors and their cargo, microRNA. It is well known that exosomes can cross the blood-brain barrier and thus may contribute to the spread of brain antigens to the periphery. Further understanding of exosome-dependent mechanisms in MS should provide a novel angle to the analysis of the pathogenesis of this disease. Finally, we launch the idea that exosomes and their contents may serve as biomarkers in MS.
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Affiliation(s)
- Igor Selmaj
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Lodz, Poland
| | - Marcin P Mycko
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Lodz, Poland
| | - Cedric S Raine
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Krzysztof W Selmaj
- Department of Neurology, Laboratory of Neuroimmunology, Medical University of Lodz, Lodz, Poland.
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21
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Glucocorticoid receptor in T cells mediates protection from autoimmunity in pregnancy. Proc Natl Acad Sci U S A 2017; 114:E181-E190. [PMID: 28049829 DOI: 10.1073/pnas.1617115114] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Pregnancy is one of the strongest inducers of immunological tolerance. Disease activity of many autoimmune diseases including multiple sclerosis (MS) is temporarily suppressed by pregnancy, but little is known about the underlying molecular mechanisms. Here, we investigated the endocrine regulation of conventional and regulatory T cells (Tregs) during reproduction. In vitro, we found the pregnancy hormone progesterone to robustly increase Treg frequencies via promiscuous binding to the glucocorticoid receptor (GR) in T cells. In vivo, T-cell-specific GR deletion in pregnant animals undergoing experimental autoimmune encephalomyelitis (EAE), the animal model of MS, resulted in a reduced Treg increase and a selective loss of pregnancy-induced protection, whereas reproductive success was unaffected. Our data imply that steroid hormones can shift the immunological balance in favor of Tregs via differential engagement of the GR in T cells. This newly defined mechanism confers protection from autoimmunity during pregnancy and represents a potential target for future therapy.
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22
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Moyano AL, Li G, Boullerne AI, Feinstein DL, Hartman E, Skias D, Balavanov R, Breemen RB, Bongarzone ER, Månsson J, Givogri MI. Sulfatides in extracellular vesicles isolated from plasma of multiple sclerosis patients. J Neurosci Res 2016; 94:1579-1587. [DOI: 10.1002/jnr.23899] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/14/2016] [Accepted: 08/02/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Ana Lis Moyano
- Department of Anatomy and Cell Biology, College of MedicineUniversity of Illinois at ChicagoChicago Illinois
| | - Guannan Li
- Department of Medical Chemistry and Pharmacognosy, College of PharmacyUniversity of Illinois at ChicagoChicago Illinois
| | - Anne I. Boullerne
- Department of Anesthesiology, College of MedicineUniversity of Illinois at ChicagoChicago Illinois
| | - Douglas L. Feinstein
- Department of Anesthesiology, College of MedicineUniversity of Illinois at ChicagoChicago Illinois
- Department of Veterans AffairsJesse Brown VA Medical CenterChicago Illinois
| | - Elizabeth Hartman
- Center for Neurosciences, Orthopedics and Spine, PC in Dakota Dunes South Dakota
| | - Demetrios Skias
- Neurology and Rehabilitation MedicineUniversity of Illinois at ChicagoChicago Illinois
| | - Roumen Balavanov
- Department of NeurologyRush University Medical CenterChicago Illinois
| | - Richard B. Breemen
- Department of Medical Chemistry and Pharmacognosy, College of PharmacyUniversity of Illinois at ChicagoChicago Illinois
| | - Ernesto R. Bongarzone
- Department of Anatomy and Cell Biology, College of MedicineUniversity of Illinois at ChicagoChicago Illinois
| | - Jan‐Eric Månsson
- Institute of Clinical ChemistrySahlgrenska Academy, University of GothenburgGothenburg Sweden
| | - Maria I. Givogri
- Department of Anatomy and Cell Biology, College of MedicineUniversity of Illinois at ChicagoChicago Illinois
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Robbins PD, Dorronsoro A, Booker CN. Regulation of chronic inflammatory and immune processes by extracellular vesicles. J Clin Invest 2016; 126:1173-80. [PMID: 27035808 DOI: 10.1172/jci81131] [Citation(s) in RCA: 205] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Almost all cell types release extracellular vesicles (EVs), which are derived either from multivesicular bodies or from the plasma membrane. EVs contain a subset of proteins, lipids, and nucleic acids from the cell from which they are derived. EV factors, particularly small RNAs such as miRNAs, likely play important roles in cell-to-cell communication both locally and systemically. Most of the functions associated with EVs are in the regulation of immune responses to pathogens and cancer, as well as in regulating autoimmunity. This Review will focus on the different modes of immune regulation, both direct and indirect, by EVs. The therapeutic utility of EVs for the regulation of immune responses will also be discussed.
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Exosomes as new diagnostic tools in CNS diseases. Biochim Biophys Acta Mol Basis Dis 2016; 1862:403-10. [DOI: 10.1016/j.bbadis.2015.09.020] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/16/2015] [Accepted: 09/25/2015] [Indexed: 12/27/2022]
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Iraci N, Leonardi T, Gessler F, Vega B, Pluchino S. Focus on Extracellular Vesicles: Physiological Role and Signalling Properties of Extracellular Membrane Vesicles. Int J Mol Sci 2016; 17:171. [PMID: 26861302 PMCID: PMC4783905 DOI: 10.3390/ijms17020171] [Citation(s) in RCA: 199] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 09/24/2015] [Indexed: 02/06/2023] Open
Abstract
Extracellular vesicles (EVs) are a heterogeneous population of secreted membrane vesicles, with distinct biogenesis routes, biophysical properties and different functions both in physiological conditions and in disease. The release of EVs is a widespread biological process, which is conserved across species. In recent years, numerous studies have demonstrated that several bioactive molecules are trafficked with(in) EVs, such as microRNAs, mRNAs, proteins and lipids. The understanding of their final impact on the biology of specific target cells remains matter of intense debate in the field. Also, EVs have attracted great interest as potential novel cell-free therapeutics. Here we describe the proposed physiological and pathological functions of EVs, with a particular focus on their molecular content. Also, we discuss the advances in the knowledge of the mechanisms regulating the secretion of EV-associated molecules and the specific pathways activated upon interaction with the target cell, highlighting the role of EVs in the context of the immune system and as mediators of the intercellular signalling in the brain.
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Affiliation(s)
- Nunzio Iraci
- Wellcome Trust-Medical Research Council Stem Cell Institute, Clifford Allbutt Building-Cambridge Biosciences Campus, Department of Clinical Neurosciences, and NIHR Biomedical Research Centre, University of Cambridge, Hills Road CB2 0PY, UK.
| | - Tommaso Leonardi
- Wellcome Trust-Medical Research Council Stem Cell Institute, Clifford Allbutt Building-Cambridge Biosciences Campus, Department of Clinical Neurosciences, and NIHR Biomedical Research Centre, University of Cambridge, Hills Road CB2 0PY, UK.
- EMBL-European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SD, UK.
| | - Florian Gessler
- Wellcome Trust-Medical Research Council Stem Cell Institute, Clifford Allbutt Building-Cambridge Biosciences Campus, Department of Clinical Neurosciences, and NIHR Biomedical Research Centre, University of Cambridge, Hills Road CB2 0PY, UK.
| | - Beatriz Vega
- Wellcome Trust-Medical Research Council Stem Cell Institute, Clifford Allbutt Building-Cambridge Biosciences Campus, Department of Clinical Neurosciences, and NIHR Biomedical Research Centre, University of Cambridge, Hills Road CB2 0PY, UK.
| | - Stefano Pluchino
- Wellcome Trust-Medical Research Council Stem Cell Institute, Clifford Allbutt Building-Cambridge Biosciences Campus, Department of Clinical Neurosciences, and NIHR Biomedical Research Centre, University of Cambridge, Hills Road CB2 0PY, UK.
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Khan D, Ansar Ahmed S. The Immune System Is a Natural Target for Estrogen Action: Opposing Effects of Estrogen in Two Prototypical Autoimmune Diseases. Front Immunol 2016; 6:635. [PMID: 26779182 PMCID: PMC4701921 DOI: 10.3389/fimmu.2015.00635] [Citation(s) in RCA: 228] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/03/2015] [Indexed: 12/11/2022] Open
Abstract
Analogous to other physiological systems, the immune system also demonstrates remarkable sex differences. Although the reasons for sex differences in immune responses are not precisely understood, it potentially involves differences in sex hormones (estrogens, androgens, and differential sex hormone receptor-mediated events), X-chromosomes, microbiome, epigenetics among others. Overall, females tend to have more responsive and robust immune system compared to their male counterparts. It is therefore not surprising that females respond more aggressively to self-antigens and are more susceptible to autoimmune diseases. Female hormone (estrogen or 17β-estradiol) can potentially act on all cellular subsets of the immune system through estrogen receptor-dependent and -independent mechanisms. This minireview highlights differential expression of estrogen receptors on immune cells, major estrogen-mediated signaling pathways, and their effect on immune cells. Since estrogen has varied effects in female-predominant autoimmune diseases such as multiple sclerosis and systemic lupus erythematosus, we will mechanistically postulate the potential differential role of estrogen in these chronic debilitating diseases.
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Affiliation(s)
- Deena Khan
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech , Blacksburg, VA , USA
| | - S Ansar Ahmed
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech , Blacksburg, VA , USA
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27
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Porro C, Trotta T, Panaro MA. Microvesicles in the brain: Biomarker, messenger or mediator? J Neuroimmunol 2015; 288:70-8. [PMID: 26531697 DOI: 10.1016/j.jneuroim.2015.09.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 09/09/2015] [Accepted: 09/15/2015] [Indexed: 02/06/2023]
Abstract
Microvesicles (MVs) are cell-derived vesicles produced after membrane remodeling of eukaryotic cells during activation or apoptosis. MVs are considered a novel biomarker/messenger for many diseases. Neurons, astrocytes, microglia, as well as neural stem cells, have been described to release MVs, many studies have demonstrated the involvement of platelets and endothelial MVs in some central nervous diseases. This review is focused on understanding the role of MVs in the brain; new findings demonstrated that MVs can contribute to the onset and progression of some neurodegenerative and neuroinflammatory diseases, as well as to the development and regeneration of the nervous system.
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Affiliation(s)
- Chiara Porro
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy.
| | - Teresa Trotta
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Maria Antonietta Panaro
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
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Russi AE, Brown MA. The meninges: new therapeutic targets for multiple sclerosis. Transl Res 2015; 165:255-69. [PMID: 25241937 PMCID: PMC4424790 DOI: 10.1016/j.trsl.2014.08.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/25/2014] [Accepted: 08/26/2014] [Indexed: 12/19/2022]
Abstract
The central nervous system (CNS) largely comprises nonregenerating cells, including neurons and myelin-producing oligodendrocytes, which are particularly vulnerable to immune cell-mediated damage. To protect the CNS, mechanisms exist that normally restrict the transit of peripheral immune cells into the brain and spinal cord, conferring an "immune-specialized" status. Thus, there has been a long-standing debate as to how these restrictions are overcome in several inflammatory diseases of the CNS, including multiple sclerosis (MS). In this review, we highlight the role of the meninges, tissues that surround and protect the CNS and enclose the cerebral spinal fluid, in promoting chronic inflammation that leads to neuronal damage. Although the meninges have traditionally been considered structures that provide physical protection for the brain and spinal cord, new data have established these tissues as sites of active immunity. It has been hypothesized that the meninges are important players in normal immunosurveillance of the CNS but also serve as initial sites of anti-myelin immune responses. The resulting robust meningeal inflammation elicits loss of localized blood-brain barrier (BBB) integrity and facilitates a large-scale influx of immune cells into the CNS parenchyma. We propose that targeting the cells and molecules mediating these inflammatory responses within the meninges offers promising therapies for MS that are free from the constraints imposed by the BBB. Importantly, such therapies may avoid the systemic immunosuppression often associated with the existing treatments.
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Affiliation(s)
- Abigail E Russi
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Melissa A Brown
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Ill.
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29
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Aryani A, Denecke B. Exosomes as a Nanodelivery System: a Key to the Future of Neuromedicine? Mol Neurobiol 2014; 53:818-834. [PMID: 25502465 PMCID: PMC4752585 DOI: 10.1007/s12035-014-9054-5] [Citation(s) in RCA: 163] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 12/05/2014] [Indexed: 01/04/2023]
Abstract
Since the beginning of the last decade, exosomes have been of increased interest in the science community. Exosomes represent a new kind of long distance transfer of biological molecules among cells. This review provides a comprehensive overview about the construction of exosomes, their targeting and their fusion mechanisms to the recipient cells. Complementarily, the current state of research regarding the cargo of exosomes is discussed. A particular focus was placed on the role of exosomes in the central nervous system. An increasing number of physiological processes in the brain could be associated with exosomes. In this context, it is becoming more apparent that exosomes are involved in several neurological and specifically neurodegenerative diseases. The treatment of these kinds of diseases is often difficult not least because of the blood-brain barrier. Exosomes are very stable, can pass the blood-brain barrier and, therefore, reveal bright perspectives towards diagnosis and therapeutic treatments. A prerequisite for clinical applications is a standardised approach. Features necessary for a standardised diagnosis using exosomes are discussed. In therapeutic terms, exosomes represent a promising drug delivery system able to pass the blood-brain barrier. One option to overcome the disadvantages potentially associated with the use of endogenous exosomes is the design of artificial exosomes. The artificial exosomes with a clearly defined therapeutic active cargo and surface marker ensuring the specific targeting to the recipient cells is proposed as a promising approach.
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Affiliation(s)
- Arian Aryani
- Interdisciplinary Center for Clinical Research Aachen (IZKF Aachen), RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Bernd Denecke
- Interdisciplinary Center for Clinical Research Aachen (IZKF Aachen), RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany.
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Haghmorad D, Amini AA, Mahmoudi MB, Rastin M, Hosseini M, Mahmoudi M. Pregnancy level of estrogen attenuates experimental autoimmune encephalomyelitis in both ovariectomized and pregnant C57BL/6 mice through expansion of Treg and Th2 cells. J Neuroimmunol 2014; 277:85-95. [DOI: 10.1016/j.jneuroim.2014.10.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 10/07/2014] [Accepted: 10/09/2014] [Indexed: 12/17/2022]
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Multiple sclerosis at menopause: Potential neuroprotective effects of estrogen. Maturitas 2014; 80:133-9. [PMID: 25544310 DOI: 10.1016/j.maturitas.2014.11.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 11/19/2014] [Accepted: 11/20/2014] [Indexed: 12/17/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune demyelinating and neurodegenerative condition of the central nervous system that preferentially afflicts women more than men. Low estrogen states such as menopause and the postpartum period favor exacerbations of multiple sclerosis in women with the disease. Existing and emerging evidence suggests a role for estrogen in the alleviation of symptoms and reversal of pathology associated with MS. While clinical evidence is sparse regarding the benefit of estrogen therapy for women at risk for MS exacerbations, scientific data demonstrates that estrogen potentiates numerous neuroprotective effects on the central nervous system (CNS). Estrogens play a wide range of roles involved in MS disease pathophysiology, including increasing antiinflammatory cytokines, decreasing demyelination, and enhancing oxidative and energy producing processes in CNS cells.
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Sáenz-Cuesta M, Osorio-Querejeta I, Otaegui D. Extracellular Vesicles in Multiple Sclerosis: What are They Telling Us? Front Cell Neurosci 2014; 8:100. [PMID: 24734004 PMCID: PMC3975116 DOI: 10.3389/fncel.2014.00100] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/17/2014] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) are membrane-bound particles secreted by almost all cell types. They are classified depending on their biogenesis and size into exosomes and microvesicles or according to their cell origin. EVs play a role in cell-to-cell communication, including contact-free cell synapsis, carrying active membrane proteins, lipids, and genetic material both inside the particle and on their surface. They have been related to several physiological and pathological conditions. In particular, increasing concentrations of EVs have been found in many autoimmune diseases including multiple sclerosis (MS). MS is a central nervous system (CNS) demyelinating disease characterized by relapsing of symptoms followed by periods of remission. Close interaction between endothelial cells, leukocytes, monocytes, and cells from CNS is crucial for the development of MS. This review summarizes the pathological role of EVs in MS and the relationship of EVs with clinical characteristics, therapy, and biomarkers of the disease.
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Affiliation(s)
- Matías Sáenz-Cuesta
- Multiple Sclerosis Unit, Neuroscience Area, Biodonostia Health Research Institute , San Sebastián , Spain ; Spanish Network on Multiple Sclerosis , Madrid , Spain
| | - Iñaki Osorio-Querejeta
- Multiple Sclerosis Unit, Neuroscience Area, Biodonostia Health Research Institute , San Sebastián , Spain ; Spanish Network on Multiple Sclerosis , Madrid , Spain
| | - David Otaegui
- Multiple Sclerosis Unit, Neuroscience Area, Biodonostia Health Research Institute , San Sebastián , Spain ; Spanish Network on Multiple Sclerosis , Madrid , Spain
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Javadian A, Salehi E, Bidad K, Sahraian MA, Izad M. Effect of estrogen on Th1, Th2 and Th17 cytokines production by proteolipid protein and PHA activated peripheral blood mononuclear cells isolated from multiple sclerosis patients. Arch Med Res 2014; 45:177-82. [PMID: 24486244 DOI: 10.1016/j.arcmed.2014.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 01/15/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS A large body of studies has shown that 17-β estradiol (E2) has a protective effect on susceptibility to experimental autoimmune encephalomyelitis (EAE). Clinical improvement in multiple sclerosis and its animal model, EAE, during pregnancy, when estrogen levels are high, suggests an immunomodulatory role for estrogens. The immune basis for this protection is poorly understood. In this study we evaluated the effect of E2 on the synthesis of inflammatory, antiinflammatory and regulatory cytokines. METHODS We analyzed the effect of E2 on IL-4, IL-10, IL-17, TNF-α and IFN-γ cytokines produced by proteolipid protein (PLP) or mitogen phytohemagglutinin (PHA)-activated peripheral blood mononuclear cells isolated from multiple sclerosis patients in comparison to healthy control group. We used RT-PCR and ELISA to detect the level of cytokines. RESULTS We found that E2 significantly increased IL-10 expression and secretion and decreased expression of TNF-α in both groups and IL-4 in patients in cells stimulated with PLP or PHA (p <0.0001). CONCLUSION These data indicated that E2 could affect expression and secretion of inflammatory and anti-inflammatory cytokines and could regulate immune responses especially in the differentiation towards regulatory responses, and this finding might have therapeutic value in multiple sclerosis.
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Affiliation(s)
- Ani Javadian
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Iran
| | - Eisa Salehi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Iran
| | - Katayon Bidad
- Immunology, Asthma and Allergy Research Institute, Tehran University of Medical Sciences, Iran
| | - Mohammad Ali Sahraian
- MS Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Izad
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Iran.
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Langer-Gould A, Beaber BE. Effects of pregnancy and breastfeeding on the multiple sclerosis disease course. Clin Immunol 2013; 149:244-50. [DOI: 10.1016/j.clim.2013.01.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Accepted: 01/17/2013] [Indexed: 11/17/2022]
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Patas K, Engler JB, Friese MA, Gold SM. Pregnancy and multiple sclerosis: feto-maternal immune cross talk and its implications for disease activity. J Reprod Immunol 2013; 97:140-6. [PMID: 23432880 DOI: 10.1016/j.jri.2012.10.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 09/30/2012] [Accepted: 10/01/2012] [Indexed: 11/16/2022]
Abstract
Multiple sclerosis (MS) is an inflammatory, demyelinating disease of the central nervous system of presumed autoimmune origin. Intriguingly, pregnancy in female MS patients is associated with a substantial decrease in relapse rate. However, post-partum the relapse rate increases in a rebounding fashion above the rate seen before pregnancy. Wide gaps remain in our understanding of the biological mechanisms underlying these pregnancy-related effects in MS patients. To date, most attempts to explain MS disease amelioration during pregnancy have focused on levels of circulating hormones with immunomodulatory properties such as estrogens and global shifts in systemic maternal immune cell composition. However, recent advances in our understanding of feto-maternal tolerance have provided evidence that fetal antigens directly interact with the maternal immune system. This results in specific immunomodulation such as fetal-antigen-dependent induction of regulatory T cells. Thus, the "shaping" of maternal immune responses by fetal antigens may represent an endogenous pathway by which antigen-specific immunomodulation might also contribute to reinstalling tolerance to autoantigens in MS. Reproductive immunology therefore has great potential to provide insights into MS immunopathogenesis and highlight novel avenues for treatment of MS and other autoimmune diseases.
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Affiliation(s)
- Konstantinos Patas
- Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Costanza M, Musio S, Abou-Hamdan M, Binart N, Pedotti R. Prolactin is not required for the development of severe chronic experimental autoimmune encephalomyelitis. THE JOURNAL OF IMMUNOLOGY 2013; 191:2082-8. [PMID: 23885109 DOI: 10.4049/jimmunol.1301128] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Predominance of multiple sclerosis (MS) in women, reductions of disease flares during pregnancy, and their increase in the postpartum period have suggested a hormonal influence on MS activity. The hormone prolactin (PRL) has long been debated as a potential immune-stimulating factor in several autoimmune disorders, including MS and its animal model experimental autoimmune encephalomyelitis (EAE). However, to date, no data clearly ascribe a pathogenic role to PRL in these diseases. Using PRL receptor-deficient (Prlr(-/-)) and PRL-deficient (Prl(-/-)) mice, we show that PRL plays a redundant role in the development of chronic EAE. In Prlr(-/-) and Prl(-/-) mice, EAE developed with a delayed onset compared with littermate control mice, but with full clinical severity. In line with the clinical outcome, T cell proliferation and production of IFN-γ, IL-17A, and IL-6 induced by myelin Ag were delayed in Prlr(-/-) and Prl(-/-) mice. Ag-specific IgG Ab responses were not affected by PRLR or PRL deficiency. We also show that mouse lymph node cells and purified CD4(+) T cells express transcript for Prlr, but not for Prl. These results reveal that PRL does not play a central role in the development of chronic EAE and optimal Th1 and Th17 responses against myelin. Moreover, they also rule out a possible contribution of PRL secreted by immune cells to the modulation of autoreactive T cell response in this model.
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Affiliation(s)
- Massimo Costanza
- Neuroimmunology and Neuromuscular Disorder Unit, Foundation IRCCS Neurological Institute Carlo Besta, 20133 Milan, Italy
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Williams JL, Gatson NN, Smith KM, Almad A, McTigue DM, Whitacre CC. Serum exosomes in pregnancy-associated immune modulation and neuroprotection during CNS autoimmunity. Clin Immunol 2013; 149:236-43. [PMID: 23706172 DOI: 10.1016/j.clim.2013.04.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/05/2013] [Accepted: 04/09/2013] [Indexed: 01/21/2023]
Abstract
In multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE), relapses are markedly reduced during pregnancy. Exosomes are lipid-bound vesicles and are more abundant in the serum during pregnancy. Using murine EAE, we demonstrate that serum exosomes suppress T cell activation, promote the maturation of oligodendrocyte precursor cells (OPC), and pregnancy exosomes facilitate OPC migration into active CNS lesions. However, exosomes derived from both pregnant and non-pregnant mice reduced the severity of established EAE. Thus, during pregnancy, serum exosomes modulate the immune and central nervous systems and contribute to pregnancy-associated suppression of EAE.
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Affiliation(s)
- Jessica L Williams
- The Ohio State University, Department of Microbial Infection and Immunity, 208 Bricker Hall, 190 North Oval Mall, Columbus, OH 43210, USA
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Magyari M, Koch-Henriksen N, Pfleger CC, Sørensen PS. Reproduction and the risk of multiple sclerosis. Mult Scler 2013; 19:1604-9. [PMID: 23508651 DOI: 10.1177/1352458513481397] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The incidence of multiple sclerosis (MS) in Denmark has doubled in women since 1970, whereas it has been almost unchanged in men. OBJECTIVES To investigate whether age at first childbirth and number of births have an effect on the risk of developing MS. METHODS The cohort consisted of 1403 patients with MS of both sexes, identified through the Danish Multiple Sclerosis Registry, with clinical onset between 2000 and 2004. For each case, 25 control persons were drawn by random from the Danish Civil Registration System matched by sex, year of birth, and residential municipality. RESULTS More female cases than controls had no childbirths or fewer births before clinical onset (p=0.018) but only in the last five years preceding onset (p<0.0001). Childbirths within five years before clinical onset reduced the risk of MS onset in women: OR=0.54 (95% CI 0.41-0.70, p<0.0001) for one child and OR=0.68 (95% CI 0.53-0.87, p=0.002) for more than one child. Parental age at first childbirth had no effect on the risk of MS. CONCLUSIONS The data did not suggest reversed causality between childbirth and MS.
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Affiliation(s)
- Melinda Magyari
- Department of Neurology, University of Copenhagen, Copenhagen, Denmark
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Marleau AM, Chen CS, Joyce JA, Tullis RH. Exosome removal as a therapeutic adjuvant in cancer. J Transl Med 2012; 10:134. [PMID: 22738135 PMCID: PMC3441244 DOI: 10.1186/1479-5876-10-134] [Citation(s) in RCA: 287] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Accepted: 06/15/2012] [Indexed: 12/21/2022] Open
Abstract
Exosome secretion is a notable feature of malignancy owing to the roles of these nanoparticles in cancer growth, immune suppression, tumor angiogenesis and therapeutic resistance. Exosomes are 30-100 nm membrane vesicles released by many cells types during normal physiological processes. Tumors aberrantly secrete large quantities of exosomes that transport oncoproteins and immune suppressive molecules to support tumor growth and metastasis. The role of exosomes in intercellular signaling is exemplified by human epidermal growth factor receptor type 2 (HER2) over-expressing breast cancer, where exosomes with the HER2 oncoprotein stimulate tumor growth and interfere with the activity of the therapeutic antibody Herceptin®. Since numerous observations from experimental model systems point toward an important clinical impact of exosomes in cancer, several pharmacological strategies have been proposed for targeting their malignant activities. We also propose a novel device strategy involving extracorporeal hemofiltration of exosomes from the entire circulatory system using an affinity plasmapheresis platform known as the Aethlon ADAPT™ (adaptive dialysis-like affinity platform technology) system, which would overcome the risks of toxicity and drug interactions posed by pharmacological approaches. This technology allows affinity agents, including exosome-binding lectins and antibodies, to be immobilized in the outer-capillary space of plasma filtration membranes that integrate into existing kidney dialysis systems. Device therapies that evolve from this platform allow rapid extracorporeal capture and selective retention of target particles < 200 nm from the entire circulatory system. This strategy is supported by clinical experience in hepatitis C virus-infected patients using an ADAPT™ device, the Hemopurifier®, to reduce the systemic load of virions having similar sizes and glycosylated surfaces as cancer exosomes. This review discusses the possible therapeutic approaches for targeting immune suppressive exosomes in cancer patients, and the anticipated significance of these strategies for reversing immune dysfunction and improving responses to standard of care treatments.
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Affiliation(s)
- Annette M Marleau
- Aethlon Medical Inc, 8910 University Center Lane, Suite 660, San Diego, CA 92122, USA.
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Giatti S, Caruso D, Boraso M, Abbiati F, Ballarini E, Calabrese D, Pesaresi M, Rigolio R, Santos-Galindo M, Viviani B, Cavaletti G, Garcia-Segura LM, Melcangi RC. Neuroprotective effects of progesterone in chronic experimental autoimmune encephalomyelitis. J Neuroendocrinol 2012; 24:851-61. [PMID: 22283602 DOI: 10.1111/j.1365-2826.2012.02284.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Observations so far obtained in experimental autoimmune encephalomyelitis (EAE) have revealed the promising neuroprotective effects exerted by progesterone (PROG). The findings suggest that this neuroactive steroid may potentially represent a therapeutic tool for multiple sclerosis (MS). However, up to now, the efficacy of PROG has been only tested in the acute phase of the disease, whereas it is well known that MS expresses different features depending on the phase of the disease. Accordingly, we have evaluated the effect of PROG treatment in EAE induced in Dark Agouti rats (i.e. an experimental model showing a protracted relapsing EAE). Data obtained 45 days after EAE induction show that PROG treatment exerts a beneficial effect on clinical score, confirming surrogate parameters of spinal cord damage in chronic EAE (i.e. reactive microglia, cytokine levels, activity of the Na(+) ,K(+) -ATPase pump and myelin basic protein expression). An increase of the levels of dihydroprogesterone and isopregnanolone (i.e. two PROG metabolites) was also observed in the spinal cord after PROG treatment. Taken together, these results indicate that PROG is effective in reducing the severity of chronic EAE and, consequently, may have potential with respect to MS treatment.
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Affiliation(s)
- S Giatti
- Department of Endocrinology, Pathophysiology and Applied Biology, Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Milano, Italy
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41
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Spence RD, Voskuhl RR. Neuroprotective effects of estrogens and androgens in CNS inflammation and neurodegeneration. Front Neuroendocrinol 2012; 33:105-15. [PMID: 22209870 PMCID: PMC3616506 DOI: 10.1016/j.yfrne.2011.12.001] [Citation(s) in RCA: 170] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 12/12/2011] [Accepted: 12/15/2011] [Indexed: 12/16/2022]
Abstract
Multiple sclerosis (MS) is a disease characterized by inflammation and demyelination. Currently, the cause of MS is unknown. Experimental autoimmune encephalomyelitis (EAE) is the most common mouse model of MS. Treatments with the sex hormones, estrogens and androgens, are capable of offering disease protection during EAE and are currently being used in clinical trials of MS. Beyond endogenous estrogens and androgens, treatments with selective estrogen receptor modulators (SERMs) for estrogen receptor alpha (ERα) and estrogen receptor beta (ERβ) are also capable of providing disease protection. This protection includes, but is not limited to, prevention of clinical disease, reduction of CNS inflammation, protection against demyelination, and protection against axonal loss. In EAE, current efforts are focused on using conditional cell specific knockouts of sex hormone receptors to identify the in vivo targets of these estrogens and androgens as well as downstream molecules responsible for disease protection.
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Affiliation(s)
- Rory D Spence
- University of California, Los Angeles, Department of Neurology, UCLA Multiple Sclerosis Program, 635 Charles E Young Drive South, Neuroscience Research Building 1, Room 479, Los Angeles, CA 90095, United States.
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42
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Sato F, Martinez NE, Omura S, Tsunoda I. Heterogeneity versus homogeneity of multiple sclerosis. Expert Rev Clin Immunol 2011; 7:165-7. [PMID: 21426254 DOI: 10.1586/eci.11.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The 10th International Congress of Neuroimmunology, including the 10th European School of Neuroimmunology Course, was held by the International Society of Neuroimmunology in Sitges (Barcelona, Spain) on 26-30 October 2010. The conference covered a wide spectrum of issues and challenges in both basic science and clinical aspects of neuroimmunology. Data and ideas were shared through a variety of programs, including review talks and poster sessions. One of the topics of the congress was whether multiple sclerosis is a homogenous or heterogenous disease, clinically and pathologically, throughout its course.
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Affiliation(s)
- Fumitaka Sato
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71130, USA
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Landek-Salgado MA, Rose NR, Caturegli P. Placenta suppresses experimental autoimmune hypophysitis through soluble TNF receptor 1. J Autoimmun 2011; 38:J88-96. [PMID: 21788115 DOI: 10.1016/j.jaut.2011.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 06/07/2011] [Accepted: 07/05/2011] [Indexed: 11/16/2022]
Abstract
Pregnancy modulates autoimmune diseases through diverse and still incompletely defined mechanisms, in part operating at the decidua-placenta interface. To assess the immunological contribution of placenta, we administered mouse placental proteins to a mouse model of autoimmune hypophysitis, a disease known to be strongly associated with pregnancy. Emulsified placental proteins suppressed both the cellular and humoral aspects of hypophysitis. Suppression was specific to self antigens and not seen when two foreign antigens, tetanus toxoid or tuberculin purified protein derivative, were used. Proteomic analysis revealed high levels of soluble TNF receptor 1 in placenta, suggesting that blockade of the TNF-α pathway was a mechanism of disease suppression. Placentas derived from mice deficient in TNF receptor 1 lost the ability to suppress hypophysitis. Notably, hypophysitis suppression was seen only when the TNF-α pathway was blocked locally, at the site of immunization, and not systemically. These findings provide evidence that placenta contributes to the immune tolerance of pregnancy by locally inhibiting the TNF-α pathway.
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MESH Headings
- Animals
- Autoantibodies/immunology
- Autoantigens/immunology
- Autoantigens/metabolism
- Autoimmune Diseases/genetics
- Autoimmune Diseases/immunology
- Autoimmune Diseases/metabolism
- Disease Models, Animal
- Female
- Immune Tolerance
- Mice
- Mice, Inbred C57BL
- Mice, Inbred CBA
- Mice, Knockout
- Pituitary Diseases/genetics
- Pituitary Diseases/immunology
- Pituitary Diseases/metabolism
- Pituitary Gland/immunology
- Placenta/immunology
- Placenta/metabolism
- Pregnancy
- Protein Binding/immunology
- Receptors, Tumor Necrosis Factor, Type I/genetics
- Receptors, Tumor Necrosis Factor, Type I/metabolism
- Thyroglobulin/immunology
- Thyroiditis, Autoimmune/genetics
- Thyroiditis, Autoimmune/immunology
- Thyroiditis, Autoimmune/metabolism
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Affiliation(s)
- Melissa A Landek-Salgado
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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