1
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Xiang W, Wang K, Han L, Wang Z, Zhou Z, Bai S, Peng J, Xie C, Guan Y. CD22 blockade aggravates EAE and its role in microglia polarization. CNS Neurosci Ther 2024; 30:e14736. [PMID: 38739106 PMCID: PMC11090149 DOI: 10.1111/cns.14736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/27/2024] [Accepted: 04/06/2024] [Indexed: 05/14/2024] Open
Abstract
AIMS Multiple sclerosis (MS) is a neuroinflammatory demyelinating disease. Microglia are reportedly involved in the pathogenesis of MS. However, the key molecules that control the inflammatory activity of microglia in MS have not been identified. METHODS Experimental autoimmune encephalomyelitis (EAE) mice were randomized into CD22 blockade and control groups. The expression levels of microglial CD22 were measured by flow cytometry, qRT-PCR, and immunofluorescence. The effects of CD22 blockade were examined via in vitro and in vivo studies. RESULTS We detected increased expression of microglial CD22 in EAE mice. In addition, an in vitro study revealed that lipopolysaccharide upregulated the expression of CD22 in microglia and that CD22 blockade modulated microglial polarization. Moreover, an in vivo study demonstrated that CD22 blockade aggravated EAE in mice and promoted microglial M1 polarization. CONCLUSION Collectively, our study indicates that CD22 may be protective against EAE and may play a critical role in the maintenance of immune homeostasis in EAE mice.
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Affiliation(s)
- Weiwei Xiang
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Kan Wang
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Lu Han
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ze Wang
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Zhiyang Zhou
- Institute of Reproduction and Development, Obstetrics & Gynecology HospitalFudan UniversityShanghaiChina
- Shanghai Key Laboratory of Reproduction and DevelopmentShanghaiChina
| | - Shuwei Bai
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jing Peng
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Chong Xie
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yangtai Guan
- Department of NeurologyRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Department of NeurologyShanghai Punan HospitalShanghaiChina
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2
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Kallal N, Hugues S, Garnier L. Regulation of autoimmune-mediated neuroinflammation by endothelial cells. Eur J Immunol 2024; 54:e2350482. [PMID: 38335316 DOI: 10.1002/eji.202350482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
The CNS has traditionally been considered an immune-privileged organ, but recent studies have identified a plethora of immune cells in the choroid plexus, meninges, perivascular spaces, and cribriform plate. Although those immune cells are crucial for the maintenance of CNS homeostasis and for neural protection against infections, they can lead to neuroinflammation in some circumstances. The blood and the lymphatic vasculatures exhibit distinct structural and molecular features depending on their location in the CNS, greatly influencing the compartmentalization and the nature of CNS immune responses. In this review, we discuss how endothelial cells regulate the migration and the functions of T cells in the CNS both at steady-state and in murine models of neuroinflammation, with a special focus on the anatomical, cellular, and molecular mechanisms implicated in EAE.
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Affiliation(s)
- Neil Kallal
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
| | - Stephanie Hugues
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
| | - Laure Garnier
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
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3
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Bufan B, Ćuruvija I, Blagojević V, Grujić-Milanović J, Prijić I, Radosavljević T, Samardžić J, Radosavljevic M, Janković R, Djuretić J. NMDA Receptor Antagonist Memantine Ameliorates Experimental Autoimmune Encephalomyelitis in Aged Rats. Biomedicines 2024; 12:717. [PMID: 38672073 PMCID: PMC11047843 DOI: 10.3390/biomedicines12040717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
Aging is closely related to the main aspects of multiple sclerosis (MS). The average age of the MS population is increasing and the number of elderly MS patients is expected to increase. In addition to neurons, N-methyl-D-aspartate receptors (NMDARs) are also expressed on non-neuronal cells, such as immune cells. The aim of this study was to investigate the role of NMDARs in experimental autoimmune encephalomyelitis (EAE) in young and aged rats. Memantine, a non-competitive NMDAR antagonist, was administered to young and aged Dark Agouti rats from day 7 after immunization. Antagonizing NMDARs had a more favourable effect on clinical disease, reactivation, and apoptosis of CD4+ T cells in the target organ of aged EAE rats. The expression of the fractalkine receptor CX3CR1 was increased in memantine-treated rats, but to a greater extent in aged rats. Additionally, memantine increased Nrf2 and Nrf2-regulated enzymes' mRNA expression in brain tissue. The concentrations of superoxide anion radicals, malondialdehyde, and advanced oxidation protein products in brain tissue were consistent with previous results. Overall, our results suggest that NMDARs play a more important role in the pathogenesis of EAE in aged than in young rats.
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Affiliation(s)
- Biljana Bufan
- Department of Microbiology and Immunology, Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia;
| | - Ivana Ćuruvija
- Department of Research and Development, Institute of Virology, Vaccines and Sera, Torlak, 11000 Belgrade, Serbia; (I.Ć.); (V.B.); (I.P.)
| | - Veljko Blagojević
- Department of Research and Development, Institute of Virology, Vaccines and Sera, Torlak, 11000 Belgrade, Serbia; (I.Ć.); (V.B.); (I.P.)
| | - Jelica Grujić-Milanović
- Institute for Medical Research, National Institute of the Republic of Serbia, Department of Cardiovascular Research, University of Belgrade, 11000 Belgrade, Serbia;
| | - Ivana Prijić
- Department of Research and Development, Institute of Virology, Vaccines and Sera, Torlak, 11000 Belgrade, Serbia; (I.Ć.); (V.B.); (I.P.)
| | - Tatjana Radosavljević
- Institute of Pathological Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Janko Samardžić
- Institute of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.S.); (M.R.)
| | - Milica Radosavljevic
- Institute of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.S.); (M.R.)
| | - Radmila Janković
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Jasmina Djuretić
- Department of Pathobiology, Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia
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4
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Lin Y, Sakuraba S, Massilamany C, Reddy J, Tanaka Y, Miyake S, Yamamura T. Harnessing autoimmunity with dominant self-peptide: Modulating the sustainability of tissue-preferential antigen-specific Tregs by governing the binding stability via peptide flanking residues. J Autoimmun 2023; 140:103094. [PMID: 37716077 DOI: 10.1016/j.jaut.2023.103094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 09/18/2023]
Abstract
Sensitization to self-peptides induces various immunological responses, from autoimmunity to tumor immunity, depending on the peptide sequence; however, the underlying mechanisms remain unclear, and thus, curative therapeutic options considering immunity balance are limited. Herein, two overlapping dominant peptides of myelin proteolipid protein, PLP136-150 and PLP139-151, which induce different forms of experimental autoimmune encephalomyelitis (EAE), monophasic and relapsing EAE, respectively, were investigated. Mice with monophasic EAE exhibited highly resistant to EAE re-induction with any encephalitogenic peptides, whereas mice with relapsing EAE were susceptible, and progressed, to EAE re-induction. This resistance to relapse and re-induction in monophasic EAE mice was associated with the maintenance of potent CD69+CD103+CD4+CD25high regulatory T-cells (Tregs) enriched with antigen specificity, which expanded preferentially in the central nervous system with sustained suppressive activity. This tissue-preferential sustainability of potent antigen-specific Tregs was correlated with the antigenicity of PLP136-150, depending on its flanking residues. That is, the flanking residues of PLP136-150 enable to form pivotally arranged strong hydrogen bonds that secured its binding stability to MHC-class II. These potent Tregs acting tissue-preferentially were induced only by sensitization of PLP136-150, not by its tolerance induction, independent of EAE development. These findings suggest that, for optimal therapy, "benign autoimmunity" can be critically achieved through inverse vaccination with self-peptides by manipulating their flanking residues.
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Affiliation(s)
- Youwei Lin
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan; Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, 187-8551, Japan.
| | - Shun Sakuraba
- National Institutes for Quantum Science and Technology, Institute for Quantum Life Science, Chiba, 263-0024, Japan.
| | | | - Jayagopala Reddy
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
| | - Yoshimasa Tanaka
- Center for Medical Innovation, Nagasaki University, Nagasaki, 852-8588, Japan.
| | - Sachiko Miyake
- Department of Immunology, Juntendo University School of Medicine, Tokyo, 113-8421, Japan.
| | - Takashi Yamamura
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan.
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5
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Nair AL, Groenendijk L, Overdevest R, Fowke TM, Annida R, Mocellin O, de Vries HE, Wevers NR. Human BBB-on-a-chip reveals barrier disruption, endothelial inflammation, and T cell migration under neuroinflammatory conditions. Front Mol Neurosci 2023; 16:1250123. [PMID: 37818458 PMCID: PMC10561300 DOI: 10.3389/fnmol.2023.1250123] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/06/2023] [Indexed: 10/12/2023] Open
Abstract
The blood-brain barrier (BBB) is a highly selective barrier that ensures a homeostatic environment for the central nervous system (CNS). BBB dysfunction, inflammation, and immune cell infiltration are hallmarks of many CNS disorders, including multiple sclerosis and stroke. Physiologically relevant human in vitro models of the BBB are essential to improve our understanding of its function in health and disease, identify novel drug targets, and assess potential new therapies. We present a BBB-on-a-chip model comprising human brain microvascular endothelial cells (HBMECs) cultured in a microfluidic platform that allows parallel culture of 40 chips. In each chip, a perfused HBMEC vessel was grown against an extracellular matrix gel in a membrane-free manner. BBBs-on-chips were exposed to varying concentrations of pro-inflammatory cytokines tumor necrosis factor alpha (TNFα) and interleukin-1 beta (IL-1β) to mimic inflammation. The effect of the inflammatory conditions was studied by assessing the BBBs-on-chips' barrier function, cell morphology, and expression of cell adhesion molecules. Primary human T cells were perfused through the lumen of the BBBs-on-chips to study T cell adhesion, extravasation, and migration. Under inflammatory conditions, the BBBs-on-chips showed decreased trans-endothelial electrical resistance (TEER), increased permeability to sodium fluorescein, and aberrant cell morphology in a concentration-dependent manner. Moreover, we observed increased expression of cell adhesion molecules and concomitant monocyte adhesion. T cells extravasated from the inflamed blood vessels and migrated towards a C-X-C Motif Chemokine Ligand 12 (CXCL12) gradient. T cell adhesion was significantly reduced and a trend towards decreased migration was observed in presence of Natalizumab, an antibody drug that blocks very late antigen-4 (VLA-4) and is used in the treatment of multiple sclerosis. In conclusion, we demonstrate a high-throughput microfluidic model of the human BBB that can be used to model neuroinflammation and assess anti-inflammatory and barrier-restoring interventions to fight neurological disorders.
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Affiliation(s)
- Arya Lekshmi Nair
- MIMETAS BV, Oegstgeest, Netherlands
- Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience – Neuroinfection and Neuroinflammation, Amsterdam, Netherlands
| | | | | | | | | | | | - Helga E. de Vries
- Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience – Neuroinfection and Neuroinflammation, Amsterdam, Netherlands
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6
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Miyamoto K, Sujino T, Harada Y, Ashida H, Yoshimatsu Y, Yonemoto Y, Nemoto Y, Tomura M, Melhem H, Niess JH, Suzuki T, Suzuki T, Suzuki S, Koda Y, Okamoto R, Mikami Y, Teratani T, Tanaka KF, Yoshimura A, Sato T, Kanai T. The gut microbiota-induced kynurenic acid recruits GPR35-positive macrophages to promote experimental encephalitis. Cell Rep 2023; 42:113005. [PMID: 37590143 DOI: 10.1016/j.celrep.2023.113005] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/25/2023] [Accepted: 08/02/2023] [Indexed: 08/19/2023] Open
Abstract
The intricate interplay between gut microbes and the onset of experimental autoimmune encephalomyelitis (EAE) remains poorly understood. Here, we uncover remarkable similarities between CD4+ T cells in the spinal cord and their counterparts in the small intestine. Furthermore, we unveil a synergistic relationship between the microbiota, particularly enriched with the tryptophan metabolism gene EC:1.13.11.11, and intestinal cells. This symbiotic collaboration results in the biosynthesis of kynurenic acid (KYNA), which modulates the recruitment and aggregation of GPR35-positive macrophages. Subsequently, a robust T helper 17 (Th17) immune response is activated, ultimately triggering the onset of EAE. Conversely, modulating the KYNA-mediated GPR35 signaling in Cx3cr1+ macrophages leads to a remarkable amelioration of EAE. These findings shed light on the crucial role of microbial-derived tryptophan metabolites in regulating immune responses within extraintestinal tissues.
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Affiliation(s)
- Kentaro Miyamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; Miyarisan Pharmaceutical Co., Ltd., Research Laboratory, 1-10-3, Kaminagazato, Kita-ku, Tokyo 114-0016, Japan
| | - Tomohisa Sujino
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - Yosuke Harada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hiroshi Ashida
- Department of Bacterial Infection and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Medical Mycology Research Center, Chiba University, 1-8-1, Inohana, Cyuo-ku, Chiba city, Chiba 260-8673, Japan
| | - Yusuke Yoshimatsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Yuki Yonemoto
- Department of Gastroenterology and Hepatology, Tokyo Medical Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Yasuhiro Nemoto
- Department of Gastroenterology and Hepatology, Tokyo Medical Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Michio Tomura
- Laboratory of Immunology, Faculty of Pharmacy, Osaka Otani University, 3-11-1 Nshikiorikita, Tondabayshi, Osaka, 584-8584, Japan
| | - Hassan Melhem
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
| | - Jan Hendrik Niess
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland; Clarunis-University Center for Gastrointestinal and Liver Diseases, University Hospital Basel, 4002 Basel, Switzerland
| | - Toshihiko Suzuki
- Department of Bacterial Infection and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Toru Suzuki
- Division of Brain Sciences Institute for Advanced Medical Research, Keio University School of Medicne, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Shohei Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Yuzo Koda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Ryuichi Okamoto
- Department of Gastroenterology and Hepatology, Tokyo Medical Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Yohei Mikami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Toshiaki Teratani
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kenji F. Tanaka
- Division of Brain Sciences Institute for Advanced Medical Research, Keio University School of Medicne, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Toshiro Sato
- Department of Organoid Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; AMED-CREST, Japan Agency for Medical Research and Development, 1-7-1, Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan.
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7
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Packer D, Fresenko EE, Harrington EP. Remyelination in animal models of multiple sclerosis: finding the elusive grail of regeneration. Front Mol Neurosci 2023; 16:1207007. [PMID: 37448959 PMCID: PMC10338073 DOI: 10.3389/fnmol.2023.1207007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/09/2023] [Indexed: 07/18/2023] Open
Abstract
Remyelination biology and the therapeutic potential of restoring myelin sheaths to prevent neurodegeneration and disability in multiple sclerosis (MS) has made considerable gains over the past decade with many regeneration strategies undergoing tested in MS clinical trials. Animal models used to investigate oligodendroglial responses and regeneration of myelin vary considerably in the mechanism of demyelination, involvement of inflammatory cells, neurodegeneration and capacity for remyelination. The investigation of remyelination in the context of aging and an inflammatory environment are of considerable interest for the potential translation to progressive multiple sclerosis. Here we review how remyelination is assessed in mouse models of demyelination, differences and advantages of these models, therapeutic strategies that have emerged and current pro-remyelination clinical trials.
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8
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Moliterni C, Tredicine M, Pistilli A, Falcicchia R, Bartolini D, Stabile AM, Rende M, Ria F, Di Sante G. In Vitro and Ex Vivo Methodologies for T-Cell Trafficking Through Blood-Brain Barrier After TLR Activation. Methods Mol Biol 2023; 2700:199-219. [PMID: 37603183 DOI: 10.1007/978-1-0716-3366-3_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
This chapter describes ex vivo isolation of human T cells and of naïve splenocytes respectively collected from multiple sclerosis patients and healthy controls and experimental autoimmune encephalomyelitis-affected mice. After the magnetic sorting of naïve and activated T helper lymphocytes, we provide details about the cell cultures to measure the interaction with extracellular matrix proteins using standard cell invasion or hand-made in vitro assays, upon different stimuli, through Toll-like receptor(s) ligands, T-cell activators, and cell adhesion molecules modulators. Finally, we describe the methods to harvest and recover T cells to evaluate the properties associated with their trafficking ability.
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Affiliation(s)
- Camilla Moliterni
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
- Department of Biology and Biotechnology Charles Darwin, University of Rome Sapienza, Rome, Italy
| | - Maria Tredicine
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Alessandra Pistilli
- Department of Medicine and Surgery, Section of Human Anatomy, University of Perugia, Perugia, Italy
| | - Renato Falcicchia
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Desirée Bartolini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Anna Maria Stabile
- Department of Medicine and Surgery, Section of Human Anatomy, University of Perugia, Perugia, Italy
| | - Mario Rende
- Department of Medicine and Surgery, Section of Human Anatomy, University of Perugia, Perugia, Italy
| | - Francesco Ria
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gabriele Di Sante
- Department of Medicine and Surgery, Section of Human Anatomy, University of Perugia, Perugia, Italy.
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9
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Crockett AM, Kebir H, Benallegue N, Adelman P, Gur RE, Sullivan K, Anderson SA, Alvarez JI. Immune status of the murine 22q11.2 deletion syndrome model. Eur J Immunol 2023; 53:e2249840. [PMID: 36337041 DOI: 10.1002/eji.202249840] [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: 01/31/2022] [Revised: 09/15/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
Abstract
Mice modeling the hemizygous deletion of chromosome 22q11.2 (22qMc) have been utilized to address various clinical phenotypes associated with the disease, including cardiac malformations, altered neural circuitry, and behavioral deficits. Yet, the status of the T cell compartment, an important clinical concern among 22q11.2 deletion syndrome (22qDS) patients, has not been addressed. While infancy and early childhood in 22qDS are associated with deficient T cell numbers and thymic hypoplasia, which can be severe in a small subset of patients, studies suggest normalization of the T cell counts by adulthood. We found that adult 22qMc do not exhibit thymic hypoplasia or altered thymic T cell development. Our findings that immune cell counts and inflammatory T cell activation are unaffected in 22qMc lend support to the hypothesis that human 22qDS immunodeficiencies are secondary to thymic hypoplasia, rather than intrinsic effects due to the deletion. Furthermore, the 22q11.2 deletion does not impact the differentiation capacity of T cells, nor their activity and response during inflammatory activation. Thus, 22qMc reflects the T cell compartment in adult 22qDS patients, and our findings suggest that 22qMc may serve as a novel model to address experimental and translational aspects of immunity in 22qDS.
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Affiliation(s)
- Alexis M Crockett
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hania Kebir
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Naïl Benallegue
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Inserm, Université de Nantes, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, F-44000, France
| | - Philippa Adelman
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Raquel E Gur
- Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Kathleen Sullivan
- Division of Allergy and Immunology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stewart A Anderson
- Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jorge I Alvarez
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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10
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Cognate microglia-T cell interactions shape the functional regulatory T cell pool in experimental autoimmune encephalomyelitis pathology. Nat Immunol 2022; 23:1749-1762. [PMID: 36456736 DOI: 10.1038/s41590-022-01360-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 10/11/2022] [Indexed: 12/05/2022]
Abstract
Microglia, the parenchymal brain macrophages of the central nervous system, have emerged as critical players in brain development and homeostasis. The immune functions of these cells, however, remain less well defined. We investigated contributions of microglia in a relapsing-remitting multiple sclerosis paradigm, experimental autoimmune encephalitis in C57BL/6 x SJL F1 mice. Fate mapping-assisted translatome profiling during the relapsing-remitting disease course revealed the potential of microglia to interact with T cells through antigen presentation, costimulation and coinhibition. Abundant microglia-T cell aggregates, as observed by histology and flow cytometry, supported the idea of functional interactions of microglia and T cells during remission, with a bias towards regulatory T cells. Finally, microglia-restricted interferon-γ receptor and major histocompatibility complex mutagenesis significantly affected the functionality of the regulatory T cell compartment in the diseased central nervous system and remission. Collectively, our data establish critical non-redundant cognate and cytokine-mediated interactions of microglia with CD4+ T cells during autoimmune neuroinflammation.
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11
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Melamed E, Palmer JL, Fonken C. Advantages and limitations of experimental autoimmune encephalomyelitis in breaking down the role of the gut microbiome in multiple sclerosis. Front Mol Neurosci 2022; 15:1019877. [PMID: 36407764 PMCID: PMC9672668 DOI: 10.3389/fnmol.2022.1019877] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/11/2022] [Indexed: 08/22/2023] Open
Abstract
Since the first model of experimental autoimmune encephalomyelitis (EAE) was introduced almost a century ago, there has been an ongoing scientific debate about the risks and benefits of using EAE as a model of multiple sclerosis (MS). While there are notable limitations of translating EAE studies directly to human patients, EAE continues to be the most widely used model of MS, and EAE studies have contributed to multiple key breakthroughs in our understanding of MS pathogenesis and discovery of MS therapeutics. In addition, insights from EAE have led to a better understanding of modifiable environmental factors that can influence MS initiation and progression. In this review, we discuss how MS patient and EAE studies compare in our learning about the role of gut microbiome, diet, alcohol, probiotics, antibiotics, and fecal microbiome transplant in neuroinflammation. Ultimately, the combination of rigorous EAE animal studies, novel bioinformatic approaches, use of human cell lines, and implementation of well-powered, age- and sex-matched randomized controlled MS patient trials will be essential for improving MS patient outcomes and developing novel MS therapeutics to prevent and revert MS disease progression.
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Affiliation(s)
- Esther Melamed
- Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, TX, United States
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12
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Fettig NM, Robinson HG, Allanach JR, Davis KM, Simister RL, Wang EJ, Sharon AJ, Ye J, Popple SJ, Seo JH, Gibson DL, Crowe SA, Horwitz MS, Osborne LC. Inhibition of Th1 activation and differentiation by dietary guar gum ameliorates experimental autoimmune encephalomyelitis. Cell Rep 2022; 40:111328. [PMID: 36103823 DOI: 10.1016/j.celrep.2022.111328] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 06/29/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
Dietary fibers are potent modulators of immune responses that can restrain inflammation in multiple disease contexts. However, dietary fibers encompass a biochemically diverse family of carbohydrates, and it remains unknown how individual fiber sources influence immunity. In a direct comparison of four different high-fiber diets, we demonstrate a potent ability of guar gum to delay disease and neuroinflammation in experimental autoimmune encephalomyelitis, a T cell-mediated mouse model of multiple sclerosis. Guar gum-specific alterations to the microbiota are limited, and disease protection appears to be independent of fiber-induced increases in short-chain fatty acid levels or regulatory CD4+ T cells. Instead, CD4+ T cells of guar gum-supplemented mice are less encephalitogenic due to reduced activation, proliferation, Th1 differentiation, and altered migratory potential. These findings reveal specificity in the host response to fiber sources and define a pathway of fiber-induced immunomodulation that protects against pathologic neuroinflammation.
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Affiliation(s)
- Naomi M Fettig
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Hannah G Robinson
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jessica R Allanach
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Katherine M Davis
- Department of Botany, University of British Columba, Vancouver, BC V6T 1Z3, Canada
| | - Rachel L Simister
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Elsie J Wang
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Andrew J Sharon
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jiayu Ye
- Department of Biology, University of British Columbia-Okanagan, Kelowna, BC V1V 1V7, Canada
| | - Sarah J Popple
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jung Hee Seo
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Deanna L Gibson
- Department of Biology, University of British Columbia-Okanagan, Kelowna, BC V1V 1V7, Canada
| | - Sean A Crowe
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Marc S Horwitz
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Lisa C Osborne
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
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13
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Saitoh K, Kashiwakura JI, Kagohashi K, Sasaki Y, Kawahara S, Sekine Y, Kitai Y, Muromoto R, Ichii M, Nakatsukasa H, Yoshimura A, Oritani K, Matsuda T. STAP-2 Is a Novel Positive Regulator of TCR-Proximal Signals. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:57-68. [PMID: 35725273 DOI: 10.4049/jimmunol.2101014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
TCR ligation with an Ag presented on MHC molecules promotes T cell activation, leading to the selection, differentiation, and proliferation of T cells and cytokine production. These immunological events are optimally arranged to provide appropriate responses against a variety of pathogens. We here propose signal-transducing adaptor protein-2 (STAP-2) as a new positive regulator of TCR signaling. STAP-2-deficient T cells showed reduced, whereas STAP-2-overexpressing T cells showed enhanced, TCR-mediated signaling and downstream IL-2 production. For the mechanisms, STAP-2 associated with TCR-proximal CD3ζ immunoreceptor tyrosine activation motifs and phosphorylated LCK, resulting in enhancement of their binding after TCR stimulation. In parallel, STAP-2 expression is required for full activation of downstream TCR signaling. Importantly, STAP-2-deficient mice exhibited slight phenotypes of CD4+ T-cell-mediated inflammatory diseases, such as experimental autoimmune encephalomyelitis, whereas STAP-2-overexpressing transgenic mice showed severe phenotypes of these diseases. Together, STAP-2 is an adaptor protein to enhance TCR signaling; therefore, manipulating STAP-2 will have an ability to improve the treatment of patients with autoimmune diseases as well as the chimeric Ag receptor T cell therapy.
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Affiliation(s)
- Kodai Saitoh
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Jun-Ichi Kashiwakura
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Kota Kagohashi
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yuto Sasaki
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Shoya Kawahara
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yuichi Sekine
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Yuichi Kitai
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Ryuta Muromoto
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Michiko Ichii
- Department of Hematology and Oncology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hiroko Nakatsukasa
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-Ku, Tokyo, Japan; and
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-Ku, Tokyo, Japan; and
| | - Kenji Oritani
- Department of Hematology, International University of Health and Welfare, Narita, Chiba, Japan
| | - Tadashi Matsuda
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan;
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14
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Miljković Đ, Stanisavljević S, Jensen IJ, Griffith TS, Badovinac VP. Sepsis and multiple sclerosis: Causative links and outcomes. Immunol Lett 2021; 238:40-46. [PMID: 34320384 DOI: 10.1016/j.imlet.2021.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/08/2021] [Accepted: 07/21/2021] [Indexed: 10/20/2022]
Abstract
Sepsis is a life-threatening condition characterized by an acute cytokine storm followed by prolonged dysfunction of the immune system in the survivors. Post-septic lymphopenia and functional deficits of the remaining immune cells lead to increased susceptibility to secondary infections and other morbid conditions causing late death in the patients. This state of post-septic immunoparalysis may also influence disorders stemming from inappropriate or overactive immune responses, such as autoimmune and immunoinflammatory diseases, including multiple sclerosis. In addition, ongoing autoimmunity likely influences the susceptibility to and outcome of sepsis. This review article addresses the bidirectional relationship between sepsis and multiple sclerosis, with a focus on the immunologic mechanisms of the interaction and potential directions for future studies.
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Affiliation(s)
- Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia.
| | - Suzana Stanisavljević
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Isaac J Jensen
- Department of Pathology, Department of Microbiology and Immunology, Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Thomas S Griffith
- Microbiology, Immunology, and Cancer Biology PhD Program, Department of Urology, Center for Immunology, Masonic Cancer Center, University of Minnesota, Minneapolis VA Health Care System, Minneapolis, MN 55417, USA
| | - Vladimir P Badovinac
- Department of Pathology, Department of Microbiology and Immunology, Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
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15
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Church ME, Ceja G, McGeehan M, Miller MC, Farias P, Sánchez MD, Swain GP, Assenmacher CA, Stopa EG, Vite CH, Bar-Or A, Alvarez JI. Meningeal B Cell Clusters Correlate with Submeningeal Pathology in a Natural Model of Multiple Sclerosis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:44-54. [PMID: 34162727 PMCID: PMC8695639 DOI: 10.4049/jimmunol.2000514] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 04/23/2021] [Indexed: 11/19/2022]
Abstract
Multiple sclerosis (MS) is an idiopathic demyelinating disease in which meningeal inflammation correlates with accelerated disease progression. The study of meningeal inflammation in MS has been limited because of constrained access to MS brain/spinal cord specimens and the lack of experimental models recapitulating progressive MS. Unlike induced models, a spontaneously occurring model would offer a unique opportunity to understand MS immunopathogenesis and provide a compelling framework for translational research. We propose granulomatous meningoencephalomyelitis (GME) as a natural model to study neuropathological aspects of MS. GME is an idiopathic, progressive neuroinflammatory disease of young dogs with a female bias. In the GME cases examined in this study, the meninges displayed focal and disseminated leptomeningeal enhancement on magnetic resonance imaging, which correlated with heavy leptomeningeal lymphocytic infiltration. These leptomeningeal infiltrates resembled tertiary lymphoid organs containing large B cell clusters that included few proliferating Ki67+ cells, plasma cells, follicular dendritic/reticular cells, and germinal center B cell-like cells. These B cell collections were confined in a specialized network of collagen fibers associated with the expression of the lympho-organogenic chemokines CXCL13 and CCL21. Although neuroparenchymal perivascular infiltrates contained B cells, they lacked the immune signature of aggregates in the meningeal compartment. Finally, meningeal B cell accumulation correlated significantly with cortical demyelination reflecting neuropathological similarities to MS. Hence, during chronic neuroinflammation, the meningeal microenvironment sustains B cell accumulation that is accompanied by underlying neuroparenchymal injury, indicating GME as a novel, naturally occurring model to study compartmentalized neuroinflammation and the associated pathology thought to contribute to progressive MS.
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Affiliation(s)
- Molly E Church
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Guadalupe Ceja
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Megan McGeehan
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Miles C Miller
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Priscilla Farias
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Melissa D Sánchez
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Gary P Swain
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | | | - Edward G Stopa
- Division of Neuropathology, Department of Pathology and Laboratory Medicine, Brown University, Providence, RI; and
| | - Charles H Vite
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - Amit Bar-Or
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Jorge I Alvarez
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA;
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16
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Stavropoulos F, Georgiou E, Sargiannidou I, Kleopa KA. Dysregulation of Blood-Brain Barrier and Exacerbated Inflammatory Response in Cx47-Deficient Mice after Induction of EAE. Pharmaceuticals (Basel) 2021; 14:ph14070621. [PMID: 34203192 PMCID: PMC8308522 DOI: 10.3390/ph14070621] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/18/2022] Open
Abstract
Induction of experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS), in connexin 32 (Cx32) or Cx47 knockout (KO) mice with deficiency in oligodendrocyte gap junctions (GJs) results in a more severe disease course. In particular, Cx47 KO EAE mice experience an earlier EAE onset and more pronounced disease severity, accompanied by dysregulated pro-inflammatory responses preceding the disease manifestations. In this study, analysis of relevant pro-inflammatory cytokines in wild type EAE, Cx32 KO EAE, and Cx47 KO EAE mice revealed altered expression of Vcam-1 preceding EAE [7 days post injection (dpi)], of Ccl2 at the onset of EAE (12 dpi), and of Gm-csf at the peak of EAE (24 dpi) in Cx47 KO EAE mice. Moreover, Cx47 KO EAE mice exhibited more severe blood-spinal cord barrier (BSCB) disruption, enhanced astrogliosis with defects in tight junction formation at the glia limitans, and increased T-cell infiltration prior to disease onset. Thus, Cx47 deficiency appears to cause dysregulation of the inflammatory profile and BSCB integrity, promoting early astrocyte responses in Cx47 KO EAE mice that lead to a more severe EAE outcome. Further investigation into the role of oligodendrocytic Cx47 in EAE and multiple sclerosis pathology is warranted.
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Affiliation(s)
- Filippos Stavropoulos
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (F.S.); (E.G.); (I.S.)
| | - Elena Georgiou
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (F.S.); (E.G.); (I.S.)
| | - Irene Sargiannidou
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (F.S.); (E.G.); (I.S.)
| | - Kleopas A. Kleopa
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (F.S.); (E.G.); (I.S.)
- Center for Multiple Sclerosis and Related Disorders, The Cyprus Institute of Neurology and Genetics and Cyprus School of Molecular Medicine, Nicosia 2371, Cyprus
- Correspondence: ; Tel.: +357-22-358600; Fax: +357-22-392786
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17
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Psenicka MW, Smith BC, Tinkey RA, Williams JL. Connecting Neuroinflammation and Neurodegeneration in Multiple Sclerosis: Are Oligodendrocyte Precursor Cells a Nexus of Disease? Front Cell Neurosci 2021; 15:654284. [PMID: 34234647 PMCID: PMC8255483 DOI: 10.3389/fncel.2021.654284] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 05/20/2021] [Indexed: 12/14/2022] Open
Abstract
The pathology in neurodegenerative diseases is often accompanied by inflammation. It is well-known that many cells within the central nervous system (CNS) also contribute to ongoing neuroinflammation, which can promote neurodegeneration. Multiple sclerosis (MS) is both an inflammatory and neurodegenerative disease in which there is a complex interplay between resident CNS cells to mediate myelin and axonal damage, and this communication network can vary depending on the subtype and chronicity of disease. Oligodendrocytes, the myelinating cell of the CNS, and their precursors, oligodendrocyte precursor cells (OPCs), are often thought of as the targets of autoimmune pathology during MS and in several animal models of MS; however, there is emerging evidence that OPCs actively contribute to inflammation that directly and indirectly contributes to neurodegeneration. Here we discuss several contributors to MS disease progression starting with lesion pathology and murine models amenable to studying particular aspects of disease. We then review how OPCs themselves can play an active role in promoting neuroinflammation and neurodegeneration, and how other resident CNS cells including microglia, astrocytes, and neurons can impact OPC function. Further, we outline the very complex and pleiotropic role(s) of several inflammatory cytokines and other secreted factors classically described as solely deleterious during MS and its animal models, but in fact, have many neuroprotective functions and promote a return to homeostasis, in part via modulation of OPC function. Finally, since MS affects patients from the onset of disease throughout their lifespan, we discuss the impact of aging on OPC function and CNS recovery. It is becoming clear that OPCs are not simply a bystander during MS progression and uncovering the active roles they play during different stages of disease will help uncover potential new avenues for therapeutic intervention.
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Affiliation(s)
- Morgan W. Psenicka
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Brandon C. Smith
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
- Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
| | - Rachel A. Tinkey
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
- School of Biomedical Sciences, Kent State University, Kent, OH, United States
| | - Jessica L. Williams
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
- Brain Health Research Institute, Kent State University, Kent, OH, United States
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18
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Matejuk A, Vandenbark AA, Offner H. Cross-Talk of the CNS With Immune Cells and Functions in Health and Disease. Front Neurol 2021; 12:672455. [PMID: 34135852 PMCID: PMC8200536 DOI: 10.3389/fneur.2021.672455] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/19/2021] [Indexed: 12/16/2022] Open
Abstract
The immune system's role is much more than merely recognizing self vs. non-self and involves maintaining homeostasis and integrity of the organism starting from early development to ensure proper organ function later in life. Unlike other systems, the central nervous system (CNS) is separated from the peripheral immune machinery that, for decades, has been envisioned almost entirely as detrimental to the nervous system. New research changes this view and shows that blood-borne immune cells (both adaptive and innate) can provide homeostatic support to the CNS via neuroimmune communication. Neurodegeneration is mostly viewed through the lens of the resident brain immune populations with little attention to peripheral circulation. For example, cognition declines with impairment of peripheral adaptive immunity but not with the removal of microglia. Therapeutic failures of agents targeting the neuroinflammation framework (inhibiting immune response), especially in neurodegenerative disorders, call for a reconsideration of immune response contributions. It is crucial to understand cross-talk between the CNS and the immune system in health and disease to decipher neurodestructive and neuroprotective immune mechanisms for more efficient therapeutic strategies.
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Affiliation(s)
- Agata Matejuk
- Department of Immunology, Collegium Medicum, University of Zielona Góra, Zielona Góra, Poland
| | - Arthur A Vandenbark
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, United States.,Department of Neurology, Oregon Health and Science University, Portland, OR, United States.,Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, United States
| | - Halina Offner
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, United States.,Department of Neurology, Oregon Health and Science University, Portland, OR, United States.,Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR, United States
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19
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Wang Y, Xie C, Song Y, Xiang W, Peng J, Han L, Ding J, Guan Y. miR-20a suppresses Treg differentiation by targeting Map3k9 in experimental autoimmune encephalomyelitis. J Transl Med 2021; 19:223. [PMID: 34039371 PMCID: PMC8157414 DOI: 10.1186/s12967-021-02893-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/17/2021] [Indexed: 12/18/2022] Open
Abstract
Background Experimental autoimmune encephalomyelitis (EAE) is a model for inflammatory demyelinating diseases of the central nervous system (CNS), a group of autoimmune diseases characterized by inflammatory infiltration, demyelination, and axonal damage. miR-20a is dysregulated in patients with CNS inflammatory demyelinating diseases; however, the function of miR-20a remains unclear. In this study, we intended to explore the role of miR-20a in EAE. Methods The expression of miR-20a was detected by quantitative real-time PCR (qRT-PCR) in EAE mice and patients with MOG antibody-associated demyelinating diseases. CD4+ T cells of EAE mice were sorted, stimulated, and polarized with miR-20a knockdown. Activation and differentiation of CD4+ T cells were analyzed by flow cytometry. The expression of target gene Map3k9 was detected by qRT-PCR and western blot experiments. The binding of miR-20a to the 3’ UTR of Map3k9 was tested by luciferase assays. The feasibility of miR-20a as a therapeutic target to alleviate the severity of EAE was explored by intravenous administration of miR-20a antagomirs to EAE mice. Results miR-20a was upregulated in splenocytes and lymph node cells, CD4+ T cells, and spinal cords of EAE mice. Moreover, miR-20a knockdown did not influence the activation of antigen-specific CD4+ T cells but promoted their differentiation into Treg cells. Map3k9 was predicted to be a target gene of miR-20a. The expressions of Map3k9 and miR-20a were negatively correlated, and miR-20a knockdown increased the expression of Map3k9. In addition, miR-20a binded to the 3’ UTR of Map3k9, and simultaneous knockdown of miR-20a and Map3k9 counteracted the enhanced differentiation of Tregs observed when miR-20a was knocked down alone. Furthermore, injection of miR-20a antagomirs to EAE mice reduced the severity of the disease and increased the proportion of Treg cells in peripheral immune organs. Conclusions miR-20a suppresses the differentiation of antigen-specific CD4+ T cells into Tregs in EAE by decreasing the expression of Map3k9. miR-20a antagomirs alleviate EAE, suggesting a new therapy for EAE and CNS inflammatory demyelinating diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-02893-4.
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Affiliation(s)
- Yishu Wang
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Chong Xie
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Yaying Song
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Weiwei Xiang
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Jing Peng
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Lu Han
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China
| | - Yangtai Guan
- Department of Neurology, Renji Hospital, Shanghai Jiaotong University School of Medicine, 160 Pujian Road, Shanghai, 200127, China.
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20
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Clark IC, Gutiérrez-Vázquez C, Wheeler MA, Li Z, Rothhammer V, Linnerbauer M, Sanmarco LM, Guo L, Blain M, Zandee SEJ, Chao CC, Batterman KV, Schwabenland M, Lotfy P, Tejeda-Velarde A, Hewson P, Manganeli Polonio C, Shultis MW, Salem Y, Tjon EC, Fonseca-Castro PH, Borucki DM, Alves de Lima K, Plasencia A, Abate AR, Rosene DL, Hodgetts KJ, Prinz M, Antel JP, Prat A, Quintana FJ. Barcoded viral tracing of single-cell interactions in central nervous system inflammation. Science 2021; 372:372/6540/eabf1230. [PMID: 33888612 DOI: 10.1126/science.abf1230] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/27/2021] [Accepted: 03/12/2021] [Indexed: 12/11/2022]
Abstract
Cell-cell interactions control the physiology and pathology of the central nervous system (CNS). To study astrocyte cell interactions in vivo, we developed rabies barcode interaction detection followed by sequencing (RABID-seq), which combines barcoded viral tracing and single-cell RNA sequencing (scRNA-seq). Using RABID-seq, we identified axon guidance molecules as candidate mediators of microglia-astrocyte interactions that promote CNS pathology in experimental autoimmune encephalomyelitis (EAE) and, potentially, multiple sclerosis (MS). In vivo cell-specific genetic perturbation EAE studies, in vitro systems, and the analysis of MS scRNA-seq datasets and CNS tissue established that Sema4D and Ephrin-B3 expressed in microglia control astrocyte responses via PlexinB2 and EphB3, respectively. Furthermore, a CNS-penetrant EphB3 inhibitor suppressed astrocyte and microglia proinflammatory responses and ameliorated EAE. In summary, RABID-seq identified microglia-astrocyte interactions and candidate therapeutic targets.
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Affiliation(s)
- Iain C Clark
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Bioengineering, University of California, Berkeley, California Institute for Quantitative Biosciences, Berkeley, CA 94720, USA
| | - Cristina Gutiérrez-Vázquez
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Michael A Wheeler
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Zhaorong Li
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Veit Rothhammer
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Mathias Linnerbauer
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Liliana M Sanmarco
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Lydia Guo
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Manon Blain
- Neuroimmunology Unit, Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Stephanie E J Zandee
- Neuroimmunology Research Laboratory, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada
| | - Chun-Cheih Chao
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Katelyn V Batterman
- Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Marius Schwabenland
- Institute of Neuropathology, University of Freiburg, D-79106 Freiburg, Germany
| | - Peter Lotfy
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Amalia Tejeda-Velarde
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Patrick Hewson
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Carolina Manganeli Polonio
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Michael W Shultis
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yasmin Salem
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Emily C Tjon
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Pedro H Fonseca-Castro
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Davis M Borucki
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Kalil Alves de Lima
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Agustin Plasencia
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Adam R Abate
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California Institute for Quantitative Biosciences, San Francisco, CA 94158, USA.,Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Douglas L Rosene
- Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Kevin J Hodgetts
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Marco Prinz
- Institute of Neuropathology, University of Freiburg, D-79106 Freiburg, Germany.,Signaling Research Centres BIOSS and CIBSS, University of Freiburg, D-79106 Freiburg, Germany.,Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, D-79106 Freiburg, Germany
| | - Jack P Antel
- Neuroimmunology Unit, Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Alexandre Prat
- Neuroimmunology Research Laboratory, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada
| | - Francisco J Quintana
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA. .,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
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21
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Oveland E, Ahmad I, Lereim RR, Kroksveen AC, Barsnes H, Guldbrandsen A, Myhr KM, Bø L, Berven FS, Wergeland S. Cuprizone and EAE mouse frontal cortex proteomics revealed proteins altered in multiple sclerosis. Sci Rep 2021; 11:7174. [PMID: 33785790 PMCID: PMC8010076 DOI: 10.1038/s41598-021-86191-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 02/19/2021] [Indexed: 02/06/2023] Open
Abstract
Two pathophysiological different experimental models for multiple sclerosis were analyzed in parallel using quantitative proteomics in attempts to discover protein alterations applicable as diagnostic-, prognostic-, or treatment targets in human disease. The cuprizone model reflects de- and remyelination in multiple sclerosis, and the experimental autoimmune encephalomyelitis (EAE, MOG1-125) immune-mediated events. The frontal cortex, peripheral to severely inflicted areas in the CNS, was dissected and analyzed. The frontal cortex had previously not been characterized by proteomics at different disease stages, and novel protein alterations involved in protecting healthy tissue and assisting repair of inflicted areas might be discovered. Using TMT-labelling and mass spectrometry, 1871 of the proteins quantified overlapped between the two experimental models, and the fold change compared to controls was verified using label-free proteomics. Few similarities in frontal cortex between the two disease models were observed when regulated proteins and signaling pathways were compared. Legumain and C1Q complement proteins were among the most upregulated proteins in cuprizone and hemopexin in the EAE model. Immunohistochemistry showed that legumain expression in post-mortem multiple sclerosis brain tissue (n = 19) was significantly higher in the center and at the edge of white matter active and chronic active lesions. Legumain was associated with increased lesion activity and might be valuable as a drug target using specific inhibitors as already suggested for Parkinson's and Alzheimer's disease. Cerebrospinal fluid levels of legumain, C1q and hemopexin were not significantly different between multiple sclerosis patients, other neurological diseases, or healthy controls.
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Affiliation(s)
- Eystein Oveland
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
| | - Intakhar Ahmad
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Neurology, Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Jonas Lies vei 65, 5021, Bergen, Norway
| | - Ragnhild Reehorst Lereim
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Ann Cathrine Kroksveen
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Harald Barsnes
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Astrid Guldbrandsen
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
- Department of Neurology, Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Jonas Lies vei 65, 5021, Bergen, Norway
- Computational Biology Unit, Department of Informatics, University of Bergen, Bergen, Norway
| | - Kjell-Morten Myhr
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Neuro-SysMed, Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Lars Bø
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Neurology, Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Jonas Lies vei 65, 5021, Bergen, Norway
- Neuro-SysMed, Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Frode S Berven
- Proteomics Unit, Department of Biomedicine, University of Bergen (PROBE), Bergen, Norway
- Department of Neurology, Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Jonas Lies vei 65, 5021, Bergen, Norway
| | - Stig Wergeland
- Department of Neurology, Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Jonas Lies vei 65, 5021, Bergen, Norway.
- Neuro-SysMed, Department of Neurology, Haukeland University Hospital, Bergen, Norway.
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22
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Ramasamy R, Smith PP. Animal modeling of lower urinary tract dysfunction associated with multiple sclerosis: Part I: Justification of the mouse model for MS research. Neurourol Urodyn 2021; 40:950-957. [PMID: 33719097 DOI: 10.1002/nau.24649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/23/2020] [Accepted: 01/16/2021] [Indexed: 12/20/2022]
Abstract
Lower urinary tract symptoms and dysfunction (LUTS/LUTD) contribute to loss of quality of life, morbidity, and need for medical intervention in most patients with multiple sclerosis (MS). Although MS is an inflammatory neurodegenerative disease, clinical manifestations including continence control disorders have traditionally been attributed to the loss of neural signaling due to neurodegeneration. Clinical approaches to MS-LUTS/LUTD have focused on addressing symptoms in the context of urodynamic dysfunctions as pathophysiologic understandings are incomplete. The mouse model provides a useful research platform for the discovery of more detailed molecular, cellular, and tissue-level knowledge of the disease and its clinical manifestations. The aim of this two-part review is to provide a state-of-the-art update on the use of the mouse model for MS research, with a focus on lower urinary tract symptoms. Part I presents a summary of the current understanding of MS pathophysiology, the impact on lower urinary tract symptoms, and briefly introduces the types of mouse models available to study MS. Part II presents the common animal models that are currently available to study MS, their mechanism, relevance to MS-LUTS/LUTD and their urinary pathophysiology, advantages, and disadvantages.
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Affiliation(s)
- Ramalakshmi Ramasamy
- UConn Center on Aging, UConn Health, Farmington, Connecticut, USA.,Department of Neuroscience, University of Connecticut Graduate School, Farmington, Connecticut, USA.,CT Institute for the Brain and Cognitive Sciences, University of Connecticut, Storrs, Connecticut, USA
| | - Phillip P Smith
- UConn Center on Aging, UConn Health, Farmington, Connecticut, USA.,Department of Neuroscience, University of Connecticut Graduate School, Farmington, Connecticut, USA.,CT Institute for the Brain and Cognitive Sciences, University of Connecticut, Storrs, Connecticut, USA.,Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut, USA
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23
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Doroshenko ER, Drohomyrecky PC, Gower A, Whetstone H, Cahill LS, Ganguly M, Spring S, Yi TJ, Sled JG, Dunn SE. Peroxisome Proliferator-Activated Receptor-δ Deficiency in Microglia Results in Exacerbated Axonal Injury and Tissue Loss in Experimental Autoimmune Encephalomyelitis. Front Immunol 2021; 12:570425. [PMID: 33732230 PMCID: PMC7959796 DOI: 10.3389/fimmu.2021.570425] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 01/28/2021] [Indexed: 12/23/2022] Open
Abstract
Peroxisome proliferator-activated receptor (PPAR)-δ is a nuclear receptor that functions to maintain metabolic homeostasis, regulate cell growth, and limit the development of excessive inflammation during immune responses. Previously, we reported that PPAR-δ-deficient mice develop a more severe clinical course of experimental autoimmune encephalomyelitis (EAE); however, it was difficult to delineate the role that microglia played in this disease phenotype since PPAR-δ-deficient mice exhibited a number of immune defects that enhanced CNS inflammation upstream of microglia activation. Here, we specifically investigated the role of PPAR-δ in microglia during EAE by using mice where excision of a floxed Ppard allele was driven by expression of a tamoxifen (TAM)-inducible CX3C chemokine receptor 1 promoter-Cre recombinase transgene (Cx3cr1CreERT2: Ppardfl/fl). We observed that by 30 days of TAM treatment, Cx3cr1CreERT2: Ppardfl/fl mice exhibited Cre-mediated deletion primarily in microglia and this was accompanied by efficient knockdown of Ppard expression in these cells. Upon induction of EAE, TAM-treated Cx3cr1CreERT2: Ppardfl/fl mice presented with an exacerbated course of disease compared to TAM-treated Ppardfl/fl controls. Histopathological and magnetic resonance (MR) studies on the spinal cord and brains of EAE mice revealed increased Iba-1 immunoreactivity, axonal injury and CNS tissue loss in the TAM-treated Cx3cr1CreERT2: Ppardfl/fl group compared to controls. In early EAE, a time when clinical scores and the infiltration of CD45+ leukocytes was equivalent between Cx3cr1CreERT2: Ppardfl/fl and Ppardfl/fl mice, Ppard-deficient microglia exhibited a more reactive phenotype as evidenced by a shorter maximum process length and lower expression of genes associated with a homeostatic microglia gene signature. In addition, Ppard-deficient microglia exhibited increased expression of genes associated with reactive oxygen species generation, phagocytosis and lipid clearance, M2-activation, and promotion of inflammation. Our results therefore suggest that PPAR-δ has an important role in microglia in limiting bystander tissue damage during neuroinflammation.
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Affiliation(s)
| | | | - Annette Gower
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada
| | - Heather Whetstone
- Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, ON, Canada
| | - Lindsay S Cahill
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON, Canada
| | - Milan Ganguly
- Histology Core, The Centre for Phenogenomics, Toronto, ON, Canada
| | - Shoshana Spring
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON, Canada
| | - Tae Joon Yi
- Department of Immunology, University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada
| | - John G Sled
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Shannon E Dunn
- Department of Immunology, University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada.,Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
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24
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Ramaglia V, Rojas O, Naouar I, Gommerman JL. The Ins and Outs of Central Nervous System Inflammation-Lessons Learned from Multiple Sclerosis. Annu Rev Immunol 2021; 39:199-226. [PMID: 33524273 DOI: 10.1146/annurev-immunol-093019-124155] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Multiple sclerosis (MS) is a chronic disease that is characterized by the inappropriate invasion of lymphocytes and monocytes into the central nervous system (CNS), where they orchestrate the demyelination of axons, leading to physical and cognitive disability. There are many reasons immunologists should be interested in MS. Aside from the fact that there is still significant unmet need for patients living with the progressive form of the disease, MS is a case study for how immune cells cross CNS barriers and subsequently interact with specialized tissue parenchymal cells. In this review, we describe the types of immune cells that infiltrate the CNS and then describe interactions between immune cells and glial cells in different types of lesions. Lastly, we provide evidence for CNS-compartmentalized immune cells and speculate on how this impacts disease progression for MS patients.
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Affiliation(s)
- Valeria Ramaglia
- Department of Immunology, University of Toronto, Ontario M5S 1A8, Canada;
| | - Olga Rojas
- Department of Immunology, University of Toronto, Ontario M5S 1A8, Canada;
| | - Ikbel Naouar
- Department of Immunology, University of Toronto, Ontario M5S 1A8, Canada;
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25
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Song J, Zhu Y, Zu W, Duan C, Xu J, Jiang F, Wang X, Li S, Liu C, Gao Q, Li H, Zhang Y, Tang W, Lu T, Chen Y. The discovery of quinoline derivatives, as NF-κB inducing kinase (NIK) inhibitors with anti-inflammatory effects in vitro, low toxicities against T cell growth. Bioorg Med Chem 2021; 29:115856. [PMID: 33199201 DOI: 10.1016/j.bmc.2020.115856] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/29/2020] [Accepted: 11/01/2020] [Indexed: 11/28/2022]
Abstract
NIK is a critical regulatory protein of the non-classical NF-kB pathway, and its dysregulated activation has been proved to be one of the pathogenic factors in a variety of autoimmune diseases and inflammatory diseases. Nevertheless, its corresponding development of inhibitors faces many obstacles, including the lack of structure types of known inhibitors, immature activity evaluation methods of compounds in vitro. In this study, a series of quinoline derivatives were obtained through rational design and chemical synthesis. Among them, the representative compounds 17c and 24c have excellent inhibitory activities on LPS-induced macrophage (J774) nitric oxide release and anti-Con A-stimulated primary T cell proliferation. This evaluation method has good universality and overcomes the obstacles mentioned above, which are faced by the current inhibitor research to a certain extent. Besides, the compound's toxicity against the growth of T cells under non-stress conditions was evaluated, for the first time, as an indicator for the investigation to avoid potential safety risks. Pharmacokinetic properties evaluation of the less toxic compound 24c confirmed its good metabolic behavior (especially oral properties, F% = 21.7%), and subsequent development value.
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Affiliation(s)
- Jianing Song
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
| | - Yuqin Zhu
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Weidong Zu
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Chunqi Duan
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Junyu Xu
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Fei Jiang
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Xinren Wang
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Shuwen Li
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Chenhe Liu
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Qianqian Gao
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Hongmei Li
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Yanmin Zhang
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Weifang Tang
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China
| | - Tao Lu
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China.
| | - Yadong Chen
- School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, PR China.
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26
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Chunder R, Schropp V, Kuerten S. B Cells in Multiple Sclerosis and Virus-Induced Neuroinflammation. Front Neurol 2020; 11:591894. [PMID: 33224101 PMCID: PMC7670072 DOI: 10.3389/fneur.2020.591894] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/05/2020] [Indexed: 01/02/2023] Open
Abstract
Neuroinflammation can be defined as an inflammatory response within the central nervous system (CNS) mediated by a complex crosstalk between CNS-resident and infiltrating immune cells from the periphery. Triggers for neuroinflammation not only include pathogens, trauma and toxic metabolites, but also autoimmune diseases such as neuromyelitis optica spectrum disorders and multiple sclerosis (MS) where the inflammatory response is recognized as a disease-escalating factor. B cells are not considered as the first responders of neuroinflammation, yet they have recently gained focus as a key component involved in the disease pathogenesis of several neuroinflammatory disorders like MS. Traditionally, the prime focus of the role of B cells in any disease, including neuroinflammatory diseases, was their ability to produce antibodies. While that may indeed be an important contribution of B cells in mediating disease pathogenesis, several lines of recent evidence indicate that B cells are multifunctional players during an inflammatory response, including their ability to present antigens and produce an array of cytokines. Moreover, interaction between B cells and other cellular components of the immune system or nervous system can either promote or dampen neuroinflammation depending on the disease. Given that the interest in B cells in neuroinflammation is relatively new, the precise roles that they play in the pathophysiology and progression of different neuroinflammatory disorders have not yet been well-elucidated. Furthermore, the possibility that they might change their function during the course of neuroinflammation adds another level of complexity and the puzzle remains incomplete. Indeed, advancing our knowledge on the role of B cells in neuroinflammation would also allow us to tackle these disorders better. Here, we review the available literature to explore the relationship between autoimmune and infectious neuroinflammation with a focus on the involvement of B cells in MS and viral infections of the CNS.
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Affiliation(s)
- Rittika Chunder
- Institute of Anatomy and Cell Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Verena Schropp
- Institute of Anatomy and Cell Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Stefanie Kuerten
- Institute of Anatomy and Cell Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
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27
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Marchese E, Valentini M, Di Sante G, Cesari E, Adinolfi A, Corvino V, Ria F, Sette C, Geloso MC. Alternative splicing of neurexins 1-3 is modulated by neuroinflammation in the prefrontal cortex of a murine model of multiple sclerosis. Exp Neurol 2020; 335:113497. [PMID: 33058888 DOI: 10.1016/j.expneurol.2020.113497] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/21/2020] [Accepted: 10/06/2020] [Indexed: 12/23/2022]
Abstract
Mounting evidence points to immune-mediated synaptopathy and impaired plasticity as early pathogenic events underlying cognitive decline (CD) in Multiple sclerosis (MS) and in the experimental autoimmune encephalomyelitis (EAE) mouse model of the disease. However, knowledge of the neurobiology of synaptic dysfunction is still incomplete. Splicing regulation represents a flexible and powerful mechanism involved in dynamic remodeling of the synapse, which allows the expression of synaptic protein variants that dynamically control the specificity of contacts between neurons. The pre-synaptic adhesion molecules neurexins (NRXNs) 1-3 play a relevant role in cognition and are alternatively spliced to yield variants that differentially cluster specific ligands in the postsynaptic compartment and modulate functional properties of the synaptic contact. Notably, mutations in these genes or disruption of their splicing program are associated with neuropsychiatric disorders. Herein, we have investigated how inflammatory changes imposed by EAE impact on alternative splicing of the Nrxn 1-3 mouse genes in the acute phase of disease. Due to its relevance in cognition, we focused on the prefrontal cortex (PFC) of SJL/J mice, in which EAE-induced inflammatory lesions extend to the rostral forebrain. We found that inclusion of the Nrxn 1-3 AS4 exon is significantly increased in the PFC of EAE mice and that splicing changes are correlated with local Il1β-expression levels. This correlation is sustained by the concomitant downregulation of SLM2, the main splicing factor involved in skipping of the AS4 exon, in EAE mice displaying high levels of Il1β- expression. We also observed that Il1β-expression levels correlate with changes in parvalbumin (PV)-positive interneuron connectivity. Moreover, exposure to environmental enrichment (EE), a condition known to stimulate neuronal connectivity and to improve cognitive functions in mice and humans, modified PFC phenotypes of EAE mice with respect to Il1β-, Slm2-expression, Nrxn AS4 splicing and PV-expression, by limiting changes associated with high levels of inflammation. Our results reveal that local inflammation results in early splicing modulation of key synaptic proteins and in remodeling of GABAergic circuitry in the PFC of SJL/J mice. We also suggest EE as a tool to counteract these inflammation-associated events, thus highlighting potential therapeutic targets for limiting the progressive CD occurring in MS.
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Affiliation(s)
- Elisa Marchese
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Mariagrazia Valentini
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Gabriele Di Sante
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 1-8, 00168 Rome, Italy.
| | - Eleonora Cesari
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; IRCCS Santa Lucia Foundation, Via del Fosso di Fiorano 65, 00143 Rome, Italy.
| | - Annalisa Adinolfi
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Valentina Corvino
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Francesco Ria
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 1-8, 00168 Rome, Italy.
| | - Claudio Sette
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
| | - Maria Concetta Geloso
- Department of Neuroscience, Section of Human Anatomy, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy.
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28
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Iberg CA, Hawiger D. Natural and Induced Tolerogenic Dendritic Cells. THE JOURNAL OF IMMUNOLOGY 2020; 204:733-744. [PMID: 32015076 DOI: 10.4049/jimmunol.1901121] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 10/04/2019] [Indexed: 11/19/2022]
Abstract
Dendritic cells (DCs) are highly susceptible to extrinsic signals that modify the functions of these crucial APCs. Maturation of DCs induced by diverse proinflammatory conditions promotes immune responses, but certain signals also induce tolerogenic functions in DCs. These "induced tolerogenic DCs" help to moderate immune responses such as those to commensals present at specific anatomical locations. However, also under steady-state conditions, some DCs are characterized by inherent tolerogenic properties. The immunomodulatory mechanisms constitutively present in such "natural tolerogenic DCs" help to promote tolerance to peripheral Ags. By extending tolerance initially established in the thymus, these functions of DCs help to regulate autoimmune and other immune responses. In this review we will discuss the mechanisms and functions of natural and induced tolerogenic DCs and offer further insight into how their possible manipulations may ultimately lead to more precise treatments for various immune-mediated conditions and diseases.
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Affiliation(s)
- Courtney A Iberg
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO 63104
| | - Daniel Hawiger
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO 63104
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29
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Giovannoni F, Quintana FJ. The Role of Astrocytes in CNS Inflammation. Trends Immunol 2020; 41:805-819. [PMID: 32800705 DOI: 10.1016/j.it.2020.07.007] [Citation(s) in RCA: 269] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/10/2020] [Accepted: 07/10/2020] [Indexed: 01/18/2023]
Abstract
Astrocytes are the most abundant cell type in the central nervous system (CNS), performing complex functions in health and disease. It is now clear that multiple astrocyte subsets or activation states (plastic phenotypes driven by intrinsic and extrinsic cues) can be identified, associated to specific genomic programs and functions. The characterization of these subsets and the mechanisms that control them may provide unique insights into the pathogenesis of neurologic diseases, and identify potential targets for therapeutic intervention. In this article, we provide an overview of the role of astrocytes in CNS inflammation, highlighting recent discoveries on astrocyte subsets and the mechanisms that control them.
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Affiliation(s)
- Federico Giovannoni
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Francisco J Quintana
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA.
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Wagner CA, Roqué PJ, Mileur TR, Liggitt D, Goverman JM. Myelin-specific CD8+ T cells exacerbate brain inflammation in CNS autoimmunity. J Clin Invest 2020; 130:203-213. [PMID: 31573979 DOI: 10.1172/jci132531] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 09/25/2019] [Indexed: 12/20/2022] Open
Abstract
Multiple sclerosis (MS) is an inflammatory, demyelinating disease of the CNS. Although CD4+ T cells are implicated in MS pathogenesis and have been the main focus of MS research using the animal model experimental autoimmune encephalomyelitis (EAE), substantial evidence from patients with MS points to a role for CD8+ T cells in disease pathogenesis. We previously showed that an MHC class I-restricted epitope of myelin basic protein (MBP) is presented in the CNS during CD4+ T cell-initiated EAE. Here, we investigated whether naive MBP-specific CD8+ T cells recruited to the CNS during CD4+ T cell-initiated EAE engaged in determinant spreading and influenced disease. We found that the MBP-specific CD8+ T cells exacerbated brain but not spinal cord inflammation. We show that a higher frequency of monocytes and monocyte-derived cells presented the MHC class I-restricted MBP ligand in the brain compared with the spinal cord. Infiltration of MBP-specific CD8+ T cells enhanced ROS production in the brain only in these cell types and only when the MBP-specific CD8+ T cells expressed Fas ligand (FasL). These results suggest that myelin-specific CD8+ T cells may contribute to disease pathogenesis via a FasL-dependent mechanism that preferentially promotes lesion formation in the brain.
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Affiliation(s)
| | | | | | - Denny Liggitt
- Department of Comparative Medicine, University of Washington, Seattle, Washington, USA
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Zheng J, Sariol A, Meyerholz D, Zhang Q, Abrahante Lloréns JE, Narumiya S, Perlman S. Prostaglandin D2 signaling in dendritic cells is critical for the development of EAE. J Autoimmun 2020; 114:102508. [PMID: 32624353 PMCID: PMC7332282 DOI: 10.1016/j.jaut.2020.102508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/08/2020] [Accepted: 06/12/2020] [Indexed: 12/24/2022]
Abstract
Priming of autoreactive T cells in lymph nodes by dendritic cells (DCs) is critical for the pathogenesis of experimental autoimmune encephalitis (EAE). DC activation reflects a balance of pro- and anti-inflammatory signals. One anti-inflammatory factor is prostaglandin D2 signaling through its cognate receptor, D-prostanoid receptor 1 (PTGDR), on myeloid cells. Loss of PTGDR signaling might be expected to enhance DC activation and EAE but here we show that PTGDR−/− mice developed only mild signs of MOG35-55 peptide immunization-induced EAE. Compared to wild type mice, PTGDR−/− mice exhibited less demyelination, decreased leukocyte infiltration and diminished microglia activation. These effects resulted from increased pro-inflammatory responses in the lymph nodes, most notably in IL-1β production, with the unexpected consequence of increased activation-induced apoptosis of MOG35-55 peptide-specific T cells. Conditional deletion of PTGDR on DCs, and not other myeloid cells ameliorated EAE. Together, these results demonstrate the indispensable role that PGD2/PTGDR signaling on DCs has in development of pathogenic T cells in autoimmune demyelination. Increased T cell activation occurred in PTGDR−/- mice resulting in T cell apoptosis. AICD decreased T cell infiltration into, and demyelination in CNS during EAE. Decreased PGD2/PTGDR signaling in DCs resulted in increased IL-1β expression. Anakinra treatment in PTGDR−/- mice increased EAE severity.
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Affiliation(s)
- Jian Zheng
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA
| | - Alan Sariol
- Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA, USA
| | - David Meyerholz
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Qinran Zhang
- School of Mathematics and Statistics, Wuhan University, Wuhan, PR China
| | | | - Shuh Narumiya
- Department of Pharmacology, Kyoto University, Tokyo, 606-8501, Japan
| | - Stanley Perlman
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA; Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA, USA.
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Targeting Dendritic Cells with Antigen-Delivering Antibodies for Amelioration of Autoimmunity in Animal Models of Multiple Sclerosis and Other Autoimmune Diseases. Antibodies (Basel) 2020; 9:antib9020023. [PMID: 32549343 PMCID: PMC7345927 DOI: 10.3390/antib9020023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/22/2020] [Accepted: 04/30/2020] [Indexed: 02/07/2023] Open
Abstract
The specific targeting of dendritic cells (DCs) using antigen-delivering antibodies has been established to be a highly efficient protocol for the induction of tolerance and protection from autoimmune processes in experimental autoimmune encephalomyelitis (EAE), a model of multiple sclerosis (MS), as well as in some other animal disease models. As the specific mechanisms of such induced tolerance are being investigated, the newly gained insights may also possibly help to design effective treatments for patients. Here we review approaches applied for the amelioration of autoimmunity in animal models based on antibody-mediated targeting of self-antigens to DCs. Further, we discuss relevant mechanisms of immunological tolerance that underlie such approaches, and we also offer some future perspectives for the application of similar methods in certain related disease settings such as transplantation.
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Xin Y, Gao J, Hu R, Li H, Li Q, Han F, He Z, Lai L, Su M. Changes of immune parameters of T lymphocytes and macrophages in EAE mice after BM-MSCs transplantation. Immunol Lett 2020; 225:66-73. [PMID: 32544469 DOI: 10.1016/j.imlet.2020.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/21/2020] [Accepted: 05/14/2020] [Indexed: 12/15/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune disease characterized by inflammatory infiltration, demyelination and axonal injury. Mesenchymal stem cells (MSCs) are pluripotent which can not only differentiate into many types of cells, but also have immunomodulatory effects. We show here that the transplantation of bone marrow MSCs (BM-MSCs) prevents the development of experimental autoimmune encephalomyelitis (EAE), the most common animal model of MS. Furthermore, we demonstrate that the immunologic mechanism by which BM-MSC transplantation ameliorates EAE involves inhibiting the proliferation and activation of T cells, reducing the production of inflammatory cytokines, and regulating macrophage responses, especially the macrophage polarization. The findings broaden our understanding about the regulation of T cell and macrophage immune responses by MSC transplantation.
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Affiliation(s)
- Ying Xin
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Jie Gao
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Rong Hu
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Hong Li
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Qian Li
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Feng Han
- Department of Neurosurgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, 550004, China.
| | - Zhixu He
- Key Laboratory for Adult Stem Cell Translational Research, Chinese Academy of Medical Sciences, Guiyang, Guizhou, 550004, China
| | - Laijun Lai
- Department of Allied Health Science, University of Connecticut, 1390 Storrs Road, Storrs, CT, 06269, USA
| | - Min Su
- Department of Human Histology and Embryology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China; Key Laboratory for Adult Stem Cell Translational Research, Chinese Academy of Medical Sciences, Guiyang, Guizhou, 550004, China.
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Nishimura T, Saito Y, Washio K, Komori S, Respatika D, Kotani T, Murata Y, Ohnishi H, Mizobuchi S, Matozaki T. SIRPα on CD11c + cells induces Th17 cell differentiation and subsequent inflammation in the CNS in experimental autoimmune encephalomyelitis. Eur J Immunol 2020; 50:1560-1570. [PMID: 32438469 DOI: 10.1002/eji.201948410] [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: 09/17/2019] [Revised: 04/12/2020] [Indexed: 01/06/2023]
Abstract
Signal regulatory protein α (SIRPα) is expressed predominantly on type 2 conventional dendritic cells (cDC2s) and macrophages. We previously showed that mice systemically lacking SIRPα were resistant to experimental autoimmune encephalomyelitis (EAE). Here, we showed that deletion of SIRPα in CD11c+ cells of mice (SirpaΔDC mice) also markedly ameliorated the development of EAE. The frequency of cDCs and migratory DCs (mDCs), as well as that of Th17 cells, were significantly reduced in draining lymph nodes of SirpaΔDC mice at the onset of EAE. In addition, we found the marked reduction in the number of Th17 cells and DCs in the CNS of SirpaΔDC mice at the peak of EAE. Whereas inducible systemic ablation of SIRPα before the induction of EAE prevented disease development, that after EAE onset did not ameliorate the clinical signs of disease. We also found that EAE development was partially attenuated in mice with CD11c+ cell-specific ablation of CD47, a ligand of SIRPα. Collectively, our results suggest that SIRPα expressed on CD11c+ cells, such as cDC2s and mDCs, is indispensable for the development of EAE, being required for the priming of self-reactive Th17 cells in the periphery as well as for the inflammation in the CNS.
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Affiliation(s)
- Taichi Nishimura
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan.,Division of Anesthesiology, Department of Surgery Related, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Ken Washio
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Satomi Komori
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Datu Respatika
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan.,Division of Reconstruction, Oculoplasty, and Oncology, Department of Ophthalmology, Faculty of Medicine, Public Health, and Nursing, Gadjah Mada University, Yogyakarta, Indonesia
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Gunma, Japan
| | - Satoshi Mizobuchi
- Division of Anesthesiology, Department of Surgery Related, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
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Di Sante G, Amadio S, Sampaolese B, Clementi ME, Valentini M, Volonté C, Casalbore P, Ria F, Michetti F. The S100B Inhibitor Pentamidine Ameliorates Clinical Score and Neuropathology of Relapsing-Remitting Multiple Sclerosis Mouse Model. Cells 2020; 9:cells9030748. [PMID: 32197530 PMCID: PMC7140642 DOI: 10.3390/cells9030748] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/11/2022] Open
Abstract
S100B is an astrocytic protein acting either as an intracellular regulator or an extracellular signaling molecule. A direct correlation between increased amount of S100B and demyelination and inflammatory processes has been demonstrated. The aim of this study is to investigate the possible role of a small molecule able to bind and inhibit S100B, pentamidine, in the modulation of disease progression in the relapsing–remitting experimental autoimmune encephalomyelitis mouse model of multiple sclerosis. By the daily evaluation of clinical scores and neuropathologic-molecular analysis performed in the central nervous system, we observed that pentamidine is able to delay the acute phase of the disease and to inhibit remission, resulting in an amelioration of clinical score when compared with untreated relapsing–remitting experimental autoimmune encephalomyelitis mice. Moreover, we observed a significant reduction of proinflammatory cytokines expression levels in the brains of treated versus untreated mice, in addition to a reduction of nitric oxide synthase activity. Immunohistochemistry confirmed that the inhibition of S100B was able to modify the neuropathology of the disease, reducing immune infiltrates and partially protecting the brain from the damage. Overall, our results indicate that pentamidine targeting the S100B protein is a novel potential drug to be considered for multiple sclerosis treatment.
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Affiliation(s)
- Gabriele Di Sante
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; (G.D.S.); (M.V.)
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 1-8, 00168 Rome, Italy
| | - Susanna Amadio
- Cellular Neurobiology Unit, Preclinical Neuroscience, IRCCS Santa Lucia Foundation, Via del Fosso di Fiorano 65, 00143 Rome, Italy; (S.A.); (C.V.)
| | - Beatrice Sampaolese
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” SCITEC-CNR, Largo Francesco Vito 1, 00168 Rome, Italy; (B.S.); (M.E.C.)
| | - Maria Elisabetta Clementi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” SCITEC-CNR, Largo Francesco Vito 1, 00168 Rome, Italy; (B.S.); (M.E.C.)
| | - Mariagrazia Valentini
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; (G.D.S.); (M.V.)
| | - Cinzia Volonté
- Cellular Neurobiology Unit, Preclinical Neuroscience, IRCCS Santa Lucia Foundation, Via del Fosso di Fiorano 65, 00143 Rome, Italy; (S.A.); (C.V.)
- Institute for Systems Analysis and Computer Science, IASI-CNR, Largo Francesco Vito 1, 00168 Rome, Italy;
| | - Patrizia Casalbore
- Institute for Systems Analysis and Computer Science, IASI-CNR, Largo Francesco Vito 1, 00168 Rome, Italy;
| | - Francesco Ria
- Department of Translational Medicine and Surgery, Section of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy; (G.D.S.); (M.V.)
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 1-8, 00168 Rome, Italy
- Correspondence: (F.R.); (F.M.); Tel.: +39-06-3015-4914 (F.R.); +39-06-3015-5848 (F.M.)
| | - Fabrizio Michetti
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy
- IRCCS San Raffaele Scientific Institute, Università Vita-Salute San Raffaele, 20132 Milan, Italy
- Correspondence: (F.R.); (F.M.); Tel.: +39-06-3015-4914 (F.R.); +39-06-3015-5848 (F.M.)
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Comparison of RNA isolation procedures for analysis of adult murine brain and spinal cord astrocytes. J Neurosci Methods 2020; 333:108545. [PMID: 31821821 DOI: 10.1016/j.jneumeth.2019.108545] [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: 08/28/2019] [Revised: 11/25/2019] [Accepted: 12/06/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND Molecular analyses of cell populations and single cells have been instrumental in the advancement of our understanding of the physiology and pathologic processes of the nervous system. However, the limitation of these methods is the dependence on a gentle, efficient and specific enrichment procedure for the target cell population. In particular, this has been challenging for tightly interconnected cells, for example central nervous system (CNS) endogenous cells such as astrocytes. NEW METHOD Here we adopted one of the most common methods of cell extraction, namely, enzymatic tissue digestion followed by fluorescence-activated cell sorting (FACS) of individual cells. We evaluated different enzymatic/mechanical tissue dissociation procedures and analyzed different astrocyte lineage transgenic models. Furthermore, we compared the cell extraction efficiency from spinal cord vs. brain. RESULTS Enzymatic digestion of CNS tissue of Glast-CreERT2x tdTomatofl/fl or Aldh1l1-CreERT2x tdTomatofl/fl followed by FACS resulted in highly purified astrocytes. Automated tissue digestion strongly improved the isolated cell numbers. Aldh1l1-CreERT2 identified more astrocytes than Glast-CreERT2; isolation from brain yields higher numbers than from spinal cord. COMPARISON WITH EXISTING METHODS We compared the efficiency and purity of the enzymatic dissociation/FACS approach with a more modern procedure consisting of tissue homogenization followed by translating ribosome affinity purification (TRAP). CONCLUSION We found that both methods result in highly enriched astrocytic RNA. However, only TRAP isolation resulted in reliably detectable RNA concentrations from spinal cord tissue on a single animal level. Depending on the aim of the study both methods have advantages and disadvantages but both are acceptable for astrocytic RNA analysis.
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Ward LA, Lee DS, Sharma A, Wang A, Naouar I, Ma XI, Pikor N, Nuesslein-Hildesheim B, Ramaglia V, Gommerman JL. Siponimod therapy implicates Th17 cells in a preclinical model of subpial cortical injury. JCI Insight 2020; 5:132522. [PMID: 31821174 DOI: 10.1172/jci.insight.132522] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/25/2019] [Indexed: 12/27/2022] Open
Abstract
Subpial demyelination is a specific hallmark of multiple sclerosis and a correlate of disease progression. Although the mechanism(s) that mediate pathogenesis in the subpial compartment remain unclear, it has been speculated that inflammation in the overlying meninges may be associated with subpial injury. Here we show that adoptive transfer of proteolipid protein-primed Th17 cells into SJL/J recipient mice induces subpial demyelination associated with microglial/macrophage activation, disruption of the glial limitans, and evidence of an oxidative stress response. This pathology was topologically associated with foci of immune cells in the meninges and occurred in the absence of measurable anti-myelin oligodendrocyte glycoprotein IgM or IgG antibodies. To test the role of brain-infiltrating leukocytes on subpial injury, we modulated sphingosine 1-phosphate (S1P) receptor1,5 activity with BAF312 (siponimod) treatment. Administration of BAF312, even after adoptively transferred T cells had entered the brain, significantly ameliorated clinical experimental autoimmune encephalomyelitis and diminished subpial pathology, concomitant with a selective reduction in the capacity of transferred T cells to make Th17 cytokines. We conclude that sustained subpial cortical injury is associated with the capacity for brain-resident T cells to produce Th17 cytokines, and this pathological process occurs in an S1P receptor1,5-dependent manner.
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Affiliation(s)
- Lesley A Ward
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Dennis Sw Lee
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Anshu Sharma
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Angela Wang
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Ikbel Naouar
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Xianjie I Ma
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Natalia Pikor
- Institute of Immunobiology, Kantonsspital St Gallen, St Gallen, Switzerland
| | | | - Valeria Ramaglia
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
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Role of SOCS2 in the Regulation of Immune Response and Development of the Experimental Autoimmune Encephalomyelitis. Mediators Inflamm 2019; 2019:1872593. [PMID: 31949423 PMCID: PMC6942913 DOI: 10.1155/2019/1872593] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 08/19/2019] [Accepted: 12/03/2019] [Indexed: 01/04/2023] Open
Abstract
Multiple sclerosis (MS) is an inflammatory disease of the central nervous system (CNS). Experimental Autoimmune Encephalomyelitis (EAE) is the most widely used animal model for the study of MS. The Suppressor of Cytokine Signaling (SOCS) 2 protein plays a critical role in regulating the immune responses. The role of SOCS2 during EAE has not been explored. EAE was induced in WT and SOCS2−/− mice using myelin oligodendrocyte glycoprotein (MOG35-55) peptide. Brain and spinal cord were examined during the peak (day 14) and recovery phase (day 28) of the disease. SOCS2 was upregulated in the brain of WT mice at the peak and recovery phase of EAE. The development of the acute phase was slower in onset in SOCS2−/− mice and was associated with reduced number of Th1 (CD3+CD4+IFN-γ+) cells in the spinal cord and brain. However, while in WT mice, maximal clinical EAE score was followed by a progressive recovery; the SOCS2−/− mice were unable to recover from locomotor impairment that occurred during the acute phase. There was a prolonged inflammatory response (increased Th1 and decreased Th2 and T regulatory cells) in the late phase of EAE in the CNS of SOCS2−/− mice. Transplantation of bone marrow cells from SOCS2−/− into irradiated WT mice resulted in higher lethality at the early phase of EAE. Altogether, these results suggest that SOCS2 plays a dual role in the immune response during EAE. It is necessary for damage during the acute phase damage but plays a beneficial role in the recovery stage of the disease.
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Kadowaki A, Saga R, Lin Y, Sato W, Yamamura T. Gut microbiota-dependent CCR9+CD4+ T cells are altered in secondary progressive multiple sclerosis. Brain 2019; 142:916-931. [PMID: 30770703 PMCID: PMC6439331 DOI: 10.1093/brain/awz012] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 10/28/2018] [Accepted: 12/01/2018] [Indexed: 12/22/2022] Open
Abstract
The mechanism underlying the progression of relapsing-remitting multiple sclerosis to secondary progressive multiple sclerosis (SPMS), characterized by accumulating fixed disability, is yet to be fully understood. Although alterations in the gut microbiota have recently been highlighted in multiple sclerosis pathogenesis, the mechanism linking the altered gut environment with the remote CNS pathology remains unclear. Here, we analyse human CD4+ memory T cells expressing the gut-homing chemokine receptor CCR9 and found a reduced frequency of CCR9+ memory T cells in the peripheral blood of patients with SPMS relative to healthy controls. The reduction in the proportion of CCR9+ cells among CD4+ memory T cells (%CCR9) in SPMS did not correlate with age, disease duration or expanded disability status scale score, although %CCR9 decreased linearly with age in healthy controls. During the clinical relapse of both, relapsing-remitting multiple sclerosis and neuromyelitis optica, a high proportion of cells expressing the lymphocyte activating 3 gene (LAG3) was detected among CCR9+ memory T cells isolated from the CSF, similar to that observed for mouse regulatory intraepithelial lymphocytes. In healthy individuals, CCR9+ memory T cells expressed higher levels of CCR6, a CNS-homing chemokine receptor, and exhibited a regulatory profile characterized by both the expression of C-MAF and the production of IL-4 and IL-10. However, in CCR9+ memory T cells, the expression of RORγt was specifically upregulated, and the production of IL-17A and IFNγ was high in patients with SPMS, indicating a loss of regulatory function. The evaluation of other cytokines supported the finding that CCR9+ memory T cells acquire a more inflammatory profile in SPMS, reporting similar aspects to CCR9+ memory T cells of the elderly healthy controls. CCR9+ memory T cell frequency decreased in germ-free mice, whereas antibiotic treatment increased their number in specific pathogen-free conditions. Here, we also demonstrate that CCR9+ memory T cells preferentially infiltrate into the inflamed CNS resulting from the initial phase and that they express LAG3 in the late phase in the experimental autoimmune encephalomyelitis mouse model of multiple sclerosis. Antibiotic treatment reduced experimental autoimmune encephalomyelitis symptoms and was accompanied by an increase in CCR9+ memory T cells in the peripheral blood. Antibodies against mucosal vascular addressin cell adhesion molecule 1 (MADCAM1), which is capable of blocking cell migration to the gut, also ameliorated experimental autoimmune encephalomyelitis. Overall, we postulate that the alterations in CCR9+ memory T cells observed, caused by either the gut microbiota changes or ageing, may lead to the development of SPMS.
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Affiliation(s)
- Atsushi Kadowaki
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, Japan.,Department of Neurology, Brigham and Women's Hospital Biomedical Research Institute, 60 Fenwood Rd, Boston, MA, USA
| | - Ryoko Saga
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, Japan
| | - Youwei Lin
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, Japan
| | - Wakiro Sato
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, Japan
| | - Takashi Yamamura
- Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, Japan
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Metabolic Control of Astrocyte Pathogenic Activity via cPLA2-MAVS. Cell 2019; 179:1483-1498.e22. [PMID: 31813625 DOI: 10.1016/j.cell.2019.11.016] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 07/31/2019] [Accepted: 11/13/2019] [Indexed: 12/22/2022]
Abstract
Metabolism has been shown to control peripheral immunity, but little is known about its role in central nervous system (CNS) inflammation. Through a combination of proteomic, metabolomic, transcriptomic, and perturbation studies, we found that sphingolipid metabolism in astrocytes triggers the interaction of the C2 domain in cytosolic phospholipase A2 (cPLA2) with the CARD domain in mitochondrial antiviral signaling protein (MAVS), boosting NF-κB-driven transcriptional programs that promote CNS inflammation in experimental autoimmune encephalomyelitis (EAE) and, potentially, multiple sclerosis. cPLA2 recruitment to MAVS also disrupts MAVS-hexokinase 2 (HK2) interactions, decreasing HK enzymatic activity and the production of lactate involved in the metabolic support of neurons. Miglustat, a drug used to treat Gaucher and Niemann-Pick disease, suppresses astrocyte pathogenic activities and ameliorates EAE. Collectively, these findings define a novel immunometabolic mechanism that drives pro-inflammatory astrocyte activities, outlines a new role for MAVS in CNS inflammation, and identifies candidate targets for therapeutic intervention.
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41
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Parnham MJ, Geisslinger G. Pharmacological plasticity-How do you hit a moving target? Pharmacol Res Perspect 2019; 7:e00532. [PMID: 31768257 PMCID: PMC6868654 DOI: 10.1002/prp2.532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 09/19/2019] [Accepted: 09/21/2019] [Indexed: 12/23/2022] Open
Abstract
Paul Ehrlich's concept of the magic bullet, by which a single drug induces pharmacological effects by interacting with a single receptor has been a strong driving force in pharmacology for a century. It is continually thwarted, though, by the fact that the treated organism is highly dynamic and the target molecule(s) is (are) never static. In this article, we address some of the factors that modify and cause the mobility and plasticity of drug targets and their interactions with ligands and discuss how these can lead to unexpected (lack of) effects of drugs. These factors include genetic, epigenetic, and phenotypic variability, cellular plasticity, chronobiological rhythms, time, age and disease resolution, sex, drug metabolism, and distribution. We emphasize four existing approaches that can be taken, either singly or in combination, to try to minimize effects of pharmacological plasticity. These are firstly, to enhance specificity using target conditions close to those in diseases, secondly, by simultaneously or thirdly, sequentially aiming at multiple targets, and fourthly, in synchronization with concurrent dietary, psychological, training, and biorhythm-synchronizing procedures to optimize drug therapy.
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Affiliation(s)
- Michael J. Parnham
- Fraunhofer Institute for Molecular Biology & Applied Ecology IMEBranch for Translational Medicine and Pharmacology TMPFrankfurt am MainGermany
| | - Gerd Geisslinger
- Fraunhofer Institute for Molecular Biology & Applied Ecology IMEBranch for Translational Medicine and Pharmacology TMPFrankfurt am MainGermany
- Institute of Clinical PharmacologyJ.W. Goethe UniversityFrankfurtGermany
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Stereological Investigation of Regional Brain Volumes after Acute and Chronic Cuprizone-Induced Demyelination. Cells 2019; 8:cells8091024. [PMID: 31484353 PMCID: PMC6770802 DOI: 10.3390/cells8091024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/19/2019] [Accepted: 08/30/2019] [Indexed: 02/03/2023] Open
Abstract
Brain volume measurement is one of the most frequently used biomarkers to establish neuroprotective effects during pre-clinical multiple sclerosis (MS) studies. Furthermore, whole-brain atrophy estimates in MS correlate more robustly with clinical disability than traditional, lesion-based metrics. However, the underlying mechanisms leading to brain atrophy are poorly understood, partly due to the lack of appropriate animal models to study this aspect of the disease. The purpose of this study was to assess brain volumes and neuro-axonal degeneration after acute and chronic cuprizone-induced demyelination. C57BL/6 male mice were intoxicated with cuprizone for up to 12 weeks. Brain volume, as well as total numbers and densities of neurons, were determined using design-based stereology. After five weeks of cuprizone intoxication, despite severe demyelination, brain volumes were not altered at this time point. After 12 weeks of cuprizone intoxication, a significant volume reduction was found in the corpus callosum and diverse subcortical areas, particularly the internal capsule and the thalamus. Thalamic volume loss was accompanied by glucose hypermetabolism, analyzed by [18F]-fluoro-2-deoxy-d-glucose (18F-FDG) positron-emission tomography. This study demonstrates region-specific brain atrophy of different subcortical brain regions after chronic cuprizone-induced demyelination. The chronic cuprizone demyelination model in male mice is, thus, a useful tool to study the underlying mechanisms of subcortical brain atrophy and to investigate the effectiveness of therapeutic interventions.
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Astrocytes in multiple sclerosis and experimental autoimmune encephalomyelitis: Star-shaped cells illuminating the darkness of CNS autoimmunity. Brain Behav Immun 2019; 80:10-24. [PMID: 31125711 DOI: 10.1016/j.bbi.2019.05.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 12/18/2022] Open
Abstract
Neuropathology in the human autoimmune disease multiple sclerosis (MS) is considered to be mediated by autoreactive leukocytes, such as T cells, B cells, and macrophages. However, the inflammation and tissue damage in MS and its animal model experimental autoimmune encephalomyelitis (EAE) is also critically regulated by astrocytes, the most abundant cell population in the central nervous system (CNS). Under physiological conditions, astrocytes are integral to the development and function of the CNS, whereas in CNS autoimmunity, astrocytes influence the pathogenesis, progression, and recovery of the diseases. In this review, we summarize recent advances in astrocytic functions in the context of MS and EAE, which are categorized into two opposite aspects, one being detrimental and the other beneficial. Inhibition of the detrimental functions and/or enhancement of the beneficial functions of astrocytes might be favorable for the treatment of MS.
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Liu H, Qiu F, Yang X, Zhao H, Bian B, Wang L. Pharmacokinetics of the Yougui pill in experimental autoimmune encephalomyelitis model rats and its pharmacological activity in vitro. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:2357-2370. [PMID: 31409970 PMCID: PMC6643060 DOI: 10.2147/dddt.s203874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/17/2019] [Indexed: 01/19/2023]
Abstract
Purpose To determine the pharmacokinetic properties and pharmacological activity of the Yougui pill (YGP), which is a well-known Chinese medicine formula. Methods An ultra-performance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry via electrospray ionization interface (UPLC-ESI-MS/MS) method was developed and validated for the simultaneous determination of several components in rat plasma. The method was then successfully applied to the pharmacokinetics of six bioactive components in experimental autoimmune encephalomyelitis (EAE) model rats after oral administration of YGP. The expression of cAMP response element binding protein (CREB) and growth-associated protein-43 (GAP-43) in SH-SY5Y cells treated with these six components, YGP extract, and YGP-containing serum were investigated to determine the pharmacodyamic material basis of YGP. Six bioactive components were detected in rat plasma, including songorine, benzoylhypaconitine, benzoylmesaconitine, neoline, karacoline and sweroside, which were rapidly absorbed after administration in EAE model rats. Results The main pharmacokinetic parameters of six bioactive components were determined, and the constituents increased CREB and GAP-43 expressions in serum-deprived SH-SY5Y cells. The YGP-containing serum, six bioactive components, and YGP extract significantly increased the expression of both CREB and GAP-43 (P<0.01), and there was no difference between the three groups. Conclusion The songorine, benzoylhypaconitine, benzoylmesaconitine, neoline, karacoline and sweroside were confirmed as the major bioactive components in YGP. The acquired data will be helpful for understanding the pharmacological and effective constituents of YGP.
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Affiliation(s)
- Haolong Liu
- School of Traditional Chinese Medicine, Beijing Key Lab of TCM Collateral Disease Theory Research, Capital Medical University, Beijing 100069, China.,Beijing Institute For Drug Control, Beijing Key Laboratory of Analysis and Evaluation on Chinese Medicine, Beijing 100035, China
| | - Feng Qiu
- School of Traditional Chinese Medicine, Beijing Key Lab of TCM Collateral Disease Theory Research, Capital Medical University, Beijing 100069, China
| | - Xinwei Yang
- School of Traditional Chinese Medicine, Beijing Key Lab of TCM Collateral Disease Theory Research, Capital Medical University, Beijing 100069, China
| | - Haiyu Zhao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Baolin Bian
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Lei Wang
- School of Traditional Chinese Medicine, Beijing Key Lab of TCM Collateral Disease Theory Research, Capital Medical University, Beijing 100069, China
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45
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Fu Y, Zhan X, Wang Y, Jiang X, Liu M, Yang Y, Huang Y, Du X, Zhong XP, Li L, Ma L, Hu S. NLRC3 expression in dendritic cells attenuates CD4 + T cell response and autoimmunity. EMBO J 2019; 38:e101397. [PMID: 31290162 DOI: 10.15252/embj.2018101397] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 06/07/2019] [Accepted: 06/07/2019] [Indexed: 12/23/2022] Open
Abstract
NOD-like receptor (NLR) family CARD domain containing 3 (NLRC3), an intracellular member of NLR family, is a negative regulator of inflammatory signaling pathways in innate and adaptive immune cells. Previous reports have shown that NLRC3 is expressed in dendritic cells (DCs). However, the role of NLRC3 in DC activation and immunogenicity is unclear. In the present study, we find that NLRC3 attenuates the antigen-presenting function of DCs and their ability to activate and polarize CD4+ T cells into Th1 and Th17 subsets. Loss of NLRC3 promotes pathogenic Th1 and Th17 responses and enhanced experimental autoimmune encephalomyelitis (EAE) development. NLRC3 negatively regulates the antigen-presenting function of DCs via p38 signaling pathway. Vaccination with NLRC3-overexpressed DCs reduces EAE progression. Our findings support that NLRC3 serves as a potential target for treating adaptive immune responses driving multiple sclerosis and other autoimmune disorders.
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Affiliation(s)
- Yuling Fu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Xiaoxia Zhan
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yichong Wang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaobing Jiang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Min Liu
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yalong Yang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Yulan Huang
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Xialin Du
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Xiao-Ping Zhong
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China.,Division of Allergy and Immunology, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Laisheng Li
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Ma
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Shengfeng Hu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
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46
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Vasconcelos AR, Dos Santos NB, Scavone C, Munhoz CD. Nrf2/ARE Pathway Modulation by Dietary Energy Regulation in Neurological Disorders. Front Pharmacol 2019; 10:33. [PMID: 30778297 PMCID: PMC6369171 DOI: 10.3389/fphar.2019.00033] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/14/2019] [Indexed: 12/16/2022] Open
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) regulates the expression of an array of enzymes with important detoxifying and antioxidant functions. Current findings support the role of high levels of oxidative stress in the pathogenesis of neurological disorders. Given the central role played by Nrf2 in counteracting oxidative damage, a number of studies have targeted the modulation of this transcription factor in order to confer neuroprotection. Nrf2 activity is tightly regulated by oxidative stress and energy-based stimuli. Thus, many dietary interventions based on energy intake regulation, such as dietary energy restriction (DER) or high-fat diet (HFD), modulate Nrf2 with consequences for a variety of cellular processes that affect brain health. DER, by either restricting calorie intake or meal frequency, activates Nrf2 thereby triggering its protective effects, whilst HFD inhibit this pathway, thereby exacerbating oxidative stress. Consequently, DER protocols can be valuable strategies in the management of central nervous system (CNS) disorders. Herein, we review current knowledge of the role of Nrf2 signaling in neurological diseases, namely Alzheimer’s disease, Parkinson’s disease, multiple sclerosis and cerebral ischemia, as well as the potential of energy intake regulation in the management of Nrf2 signaling.
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Affiliation(s)
- Andrea Rodrigues Vasconcelos
- Laboratory of Molecular Neuropharmacology, Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - Nilton Barreto Dos Santos
- Laboratory of Neuroendocrinopharmacology and Immunomodulation, Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - Cristoforo Scavone
- Laboratory of Molecular Neuropharmacology, Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - Carolina Demarchi Munhoz
- Laboratory of Neuroendocrinopharmacology and Immunomodulation, Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
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47
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Olmstead TA, Chiarelli PA, Griggs DJ, McClintic AM, Myroniv AN, Mourad PD. Transcranial and pulsed focused ultrasound that activates brain can accelerate remyelination in a mouse model of multiple sclerosis. J Ther Ultrasound 2018; 6:11. [PMID: 30555696 PMCID: PMC6287362 DOI: 10.1186/s40349-018-0119-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 11/15/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) impacts approximately 400,000 in the United States and is the leading cause of disability among young to middle aged people in the developed world. Characteristic of this disease, myelin within generally focal volumes of brain tissue wastes away under an autoimmune assault, either inexorably or through a cycle of demyelination and remyelination. This centrally located damage produces central and peripheral symptoms tied to the portion of brain within the MS lesion site. Interestingly, Gibson and colleagues noted that optical activation of transgenically tagged central neurons increased the thickness of the myelin sheath around those neurons. Since ultrasound, delivered transcranially, can also activate brain focally, we hypothesized that ultrasound stimulation that followed the temporal pattern of Gibson et al. applied to MS lesions in a mouse model might either decelerate the demyelination phase or accelerate its remyelination phase. METHODS We created a temporal pattern of ultrasound delivery that conformed to that of Gibson et al. and capable of activating mouse brain. We then applied ultrasound, transcranially, following that temporal pattern to separate cohorts of a mouse model of multiple sclerosis, using three different ultrasound carrier frequencies (0.625 MHz, 1.09 MHz, 2.0 MHz), during each of the demyelinating and remyelinating phases. After identifying the most promising protocol and MS brain state through qualitative analysis of myelin content, we performed additional studies for that condition then assayed for change in myelin content via quantitative analysis. RESULTS We identified one ultrasound protocol that significantly accelerated remyelination, without damage, as demonstrated with histological analysis. CONCLUSION MRI-guided focused ultrasound systems exist that can, in principle, deliver the ultrasound protocol we successfully tested here. In addition, MRI, as the clinical gold standard, can readily identify MS lesions. Given the relatively low intensity values of our ultrasound protocol - close to FDA limits - we anticipate that future success with this approach to MS therapy as tested using more realistic MS mouse models may one day translate to clinical trials that help address this devastating disease.
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Affiliation(s)
- T. A. Olmstead
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195 USA
| | - P. A. Chiarelli
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195 USA
| | - D. J. Griggs
- Division of Engineering and Mathematics, University of Washington, Bothell, WA 98011 USA
| | - A. M. McClintic
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195 USA
| | - A. N. Myroniv
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195 USA
| | - P. D. Mourad
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195 USA
- Division of Engineering and Mathematics, University of Washington, Bothell, WA 98011 USA
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48
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Aulova KS, Toporkova LB, Lopatnikova JA, Alshevskaya AA, Sedykh SE, Buneva VN, Budde T, Meuth SG, Popova NA, Orlovskaya IA, Nevinsky GA. Changes in cell differentiation and proliferation lead to production of abzymes in EAE mice treated with DNA-Histone complexes. J Cell Mol Med 2018; 22:5816-5832. [PMID: 30265424 PMCID: PMC6237594 DOI: 10.1111/jcmm.13850] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 06/28/2018] [Accepted: 07/20/2018] [Indexed: 01/02/2023] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE)-prone C57BL/6 mice are used as a model of human multiple sclerosis. We immunize mice with myelin oligodendrocyte glycoprotein (MOG), DNA-histone and DNA-methylated bovine serum albumin (met-BSA) complexes to reveal different characteristics of EAE development including bone marrow lymphocyte proliferation and differentiation profiles of hematopoietic stem cells. Immunization of C57BL/6 mice with MOG35-55 results in the acceleration of EAE development. Anti-DNA antibodies are usually directed against DNA-histone complexes resulting from cell apoptosis. During the acute EAE phase (7-20 days after immunization), catalytic antibodies efficiently hydrolysing myelin basic protein (MBP), MOG and DNA are produced with parallel suppression of antibodies hydrolysing histones. We could show that in contrast to MOG, immunization with histone-DNA results in a reduction of proteinuria, a significant increase in anti-DNA, anti-MBP and anti-MOG antibody titres, as well as an increase in their catalytic activities for antigen hydrolysis, but slightly changes the concentration of cytokines. Contrary to MOG, DNA-histone and DNA-met-BSA only stimulated the formation of anti-DNA antibodies hydrolysing DNA with a long delay (15-20 days after immunization). Our data indicate that for C57BL/6 mice immunization with DNA-met-BSA and DNA-histone complexes may have opposing effects compared to MOG. DNA-histone stimulates the appearance of histone-hydrolysing abzymes in the acute EAE phase, while abzymes with DNase activity appear at significantly later time-points. We conclude that MOG, DNA-histone and DNA-met-BSA have different effects on numerous bone marrow, cellular, immunological and biochemical parameters of immunized mice, but all antigens finally significantly stimulate the development of the EAE.
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Affiliation(s)
- Kseniya S. Aulova
- Institute of Chemical Biology and Fundamental MedicineSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Ludmila B. Toporkova
- Institute of Fundamental and Clinical ImmunologySiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Julia A. Lopatnikova
- Institute of Fundamental and Clinical ImmunologySiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Alina A. Alshevskaya
- Institute of Fundamental and Clinical ImmunologySiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Sergey E. Sedykh
- Institute of Chemical Biology and Fundamental MedicineSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Valentina N. Buneva
- Institute of Chemical Biology and Fundamental MedicineSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Thomas Budde
- Institut für Physiologie IWestfälische Wilhelms‐UniversitätMünsterGermany
| | - Sven G. Meuth
- Department of NeurologyWestfälische Wilhelms‐UniversitätMünsterGermany
| | - Nelly A. Popova
- Institute Cytology and GeneticsSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
- Novosibirsk State UniversityNovosibirskRussia
| | - Irina A. Orlovskaya
- Institute of Fundamental and Clinical ImmunologySiberian Branch of the Russian Academy of SciencesNovosibirskRussia
| | - Georgy A. Nevinsky
- Institute of Chemical Biology and Fundamental MedicineSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
- Novosibirsk State UniversityNovosibirskRussia
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49
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Burrows DJ, McGown A, Jain SA, De Felice M, Ramesh TM, Sharrack B, Majid A. Animal models of multiple sclerosis: From rodents to zebrafish. Mult Scler 2018; 25:306-324. [PMID: 30319015 DOI: 10.1177/1352458518805246] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Multiple sclerosis (MS) is a chronic, immune-mediated demyelinating disease of the central nervous system. Animal models of MS have been critical for elucidating MS pathological mechanisms and how they may be targeted for therapeutic intervention. Here we review the most commonly used animal models of MS. Although these animal models cannot fully replicate the MS disease course, a number of models have been developed to recapitulate certain stages. Experimental autoimmune encephalomyelitis (EAE) has been used to explore neuroinflammatory mechanisms and toxin-induced demyelinating models to further our understanding of oligodendrocyte biology, demyelination and remyelination. Zebrafish models of MS are emerging as a useful research tool to validate potential therapeutic candidates due to their rapid development and amenability to genetic manipulation.
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Affiliation(s)
- David John Burrows
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Alexander McGown
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Saurabh A Jain
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Milena De Felice
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Tennore M Ramesh
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Basil Sharrack
- Academic Department of Neuroscience, The Sheffield NIHR Translational Neuroscience Biomedical Research Centre, University of Sheffield, Sheffield, UK
| | - Arshad Majid
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK/Academic Department of Neuroscience, The Sheffield NIHR Translational Neuroscience Biomedical Research Centre, University of Sheffield, Sheffield, UK
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50
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Van C, Condro MC, Lov K, Zhu R, Ricaflanca PT, Ko HH, Diep AL, Hoang AQ, Pisegna J, Rohrer H, Waschek JA. PACAP/PAC1 Regulation of Inflammation via Catecholaminergic Neurons in a Model of Multiple Sclerosis. J Mol Neurosci 2018; 68:439-451. [PMID: 30058008 DOI: 10.1007/s12031-018-1137-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/20/2018] [Indexed: 12/30/2022]
Abstract
The sympathetic nervous system (SNS) serves to maintain homeostasis of vital organ systems throughout the body, and its dysfunction plays a major role in human disease. The SNS also links the central nervous system to the immune system during different types of stress via innervation of the lymph nodes, spleen, thymus, and bone marrow. Previous studies have shown that pituitary adenylate cyclase-activating polypeptide (PACAP, gene name adcyap1) exhibits anti-inflammatory properties in the experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis. Because PACAP is known to regulate SNS function, we hypothesized that part of the immunoprotective action of PACAP is due to its neuromodulatory effects on sympathetic neurons. To examine this, we used an inducible, targeted approach to conditionally disrupt not only the PACAP-preferring PAC1 receptor gene (adcyap1r1) in dopamine β-hydroxylase-expressing cells, which includes postganglionic sympathetic neurons, but also catecholaminergic neurons in the brain and adrenomedullary chromaffin cells. In contrast to our previous EAE studies using PACAP global knockout mice which developed severe and prolonged EAE, we found that mice with conditional loss of PAC1 receptors in catecholaminergic cells developed a delayed time course of EAE with reduced helper T cell type 1 (Th1) and Th17 and enhanced Th2 cell polarization. At later time points, similar to mice with global PACAP loss, mice with conditional loss of PAC1 exhibited more severe clinical disease than controls. The latter was associated with a reduction in the abundance of thymic regulatory T cells (Tregs). These studies indicate that PAC1 receptor signaling acts in catecholaminergic cells in a time-dependent manner. At early stages of disease development, it enhances the ability of the SNS to polarize the Th response towards a more inflammatory state. Then, after disease is established, it enhances the ability of the SNS to dampen the inflammatory response via Tregs. The lack of concordance in results between global PACAP KO mice and mice with the PAC1 deletion targeted to catecholaminergic cells during early EAE may be explained by the fact that PACAP acts to regulate inflammation via multiple receptor subtypes and multiple targets, including inflammatory cells.
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Affiliation(s)
- Christina Van
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA.,Molecular Biology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, USA
| | - Michael C Condro
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Kenny Lov
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Ruoyan Zhu
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Patrick T Ricaflanca
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Henly H Ko
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Anna L Diep
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Anh Q Hoang
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Joseph Pisegna
- Center for Ulcer Research and Education (CURE): Digestive Diseases Research Center, University of California, Los Angeles, Los Angeles, CA, USA
| | - Hermann Rohrer
- Max Planck Institute for Brain Research, Frankfurt, Germany.,Institute for Clinical Neuroanatomy, Goethe University, Frankfurt, Germany
| | - James A Waschek
- Semel Institute for Neuroscience and Human Behavior/Neuropsychiatric Institute, Intellectual and Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA, USA.
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