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Woodfin S, Hall S, Ramerth A, Chapple B, Fausnacht D, Moore W, Alkhalidy H, Liu D. Potential Application of Plant-Derived Compounds in Multiple Sclerosis Management. Nutrients 2024; 16:2996. [PMID: 39275311 PMCID: PMC11397714 DOI: 10.3390/nu16172996] [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: 07/30/2024] [Revised: 08/23/2024] [Accepted: 08/29/2024] [Indexed: 09/16/2024] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune disorder characterized by inflammation, demyelination, and neurodegeneration, resulting in significant disability and reduced quality of life. Current therapeutic strategies primarily target immune dysregulation, but limitations in efficacy and tolerability highlight the need for alternative treatments. Plant-derived compounds, including alkaloids, phenylpropanoids, and terpenoids, have demonstrated anti-inflammatory effects in both preclinical and clinical studies. By modulating immune responses and promoting neuroregeneration, these compounds offer potential as novel adjunctive therapies for MS. This review provides insights into the molecular and cellular basis of MS pathogenesis, emphasizing the role of inflammation in disease progression. It critically evaluates emerging evidence supporting the use of plant-derived compounds to attenuate inflammation and MS symptomology. In addition, we provide a comprehensive source of information detailing the known mechanisms of action and assessing the clinical potential of plant-derived compounds in the context of MS pathogenesis, with a focus on their anti-inflammatory and neuroprotective properties.
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Affiliation(s)
- Seth Woodfin
- Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA 24515, USA
| | - Sierra Hall
- Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA 24515, USA
| | - Alexis Ramerth
- Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA 24515, USA
| | - Brooke Chapple
- Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA 24515, USA
| | - Dane Fausnacht
- Department of Biology, School of Sciences and Agriculture, Ferrum College, Ferrum, VA 24088, USA
| | - William Moore
- Department of Biology and Chemistry, School of Health Sciences, Liberty University, Lynchburg, VA 24515, USA
| | - Hana Alkhalidy
- Department of Human Nutrition, Foods and Exercise, College of Agriculture and Life Sciences, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Dongmin Liu
- Department of Human Nutrition, Foods and Exercise, College of Agriculture and Life Sciences, Virginia Tech, Blacksburg, VA 24061, USA
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Liu M, Liu K, Cheng D, Zheng B, Li S, Mo Z. The regulatory role of NLRX1 in innate immunity and human disease. Cytokine 2022; 160:156055. [DOI: 10.1016/j.cyto.2022.156055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 09/01/2022] [Accepted: 09/20/2022] [Indexed: 11/03/2022]
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Pharmacological Aspects and Biological Effects of Cannabigerol and Its Synthetic Derivatives. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3336516. [PMID: 36397993 PMCID: PMC9666035 DOI: 10.1155/2022/3336516] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/09/2022]
Abstract
Cannabigerol (CBG) is a cannabinoid from the plant Cannabis sativa that lacks psychotomimetic effects. Its precursor is the acidic form, cannabigerolic acid (CBGA), which is, in turn, a biosynthetic precursor of the compounds cannabidiol (CBD) and Δ9-tetrahydrocannabinol (THC). CBGA decarboxylation leads to the formation of neutral cannabinoid CBG, through a chemical reaction catalyzed by heat. On the basis of the growing interest in CBG and with the aim of highlighting scientific information on this phytocannabinoid, we focused the content of this article on its pharmacokinetic and pharmacodynamic characteristics and on its principal pharmacological effects. CBG is metabolized in the liver by the enzyme CYP2J2 to produce hydroxyl and di-oxygenated products. CBG is considered a partial agonist at the CB1 receptor (R) and CB2R, as well as a regulator of endocannabinoid signaling. Potential pharmacological targets for CBG include transient receptor potential (TRP) channels, cyclooxygenase (COX-1 and COX-2) enzymes, cannabinoid, 5-HT1A, and alpha-2 receptors. Pre-clinical findings show that CBG reduces intraocular pressure, possesses antioxidant, anti-inflammatory, and anti-tumoral activities, and has anti-anxiety, neuroprotective, dermatological, and appetite-stimulating effects. Several findings suggest that research on CBG deserves to be deepened, as it could be used, alone or in association, for novel therapeutic approaches for several disorders.
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4
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Zhang X, Ren L, Wei J, Ni Y, Sun L, Zhao X, Zhang Y, Qiao H. Silencing long noncoding RNA-CES1P1 suppresses glomerular endothelial cell inflammation in diabetic nephropathy. Int Immunopharmacol 2022; 110:108820. [PMID: 35834955 DOI: 10.1016/j.intimp.2022.108820] [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: 04/20/2021] [Revised: 04/23/2022] [Accepted: 04/28/2022] [Indexed: 11/26/2022]
Abstract
Diabetic nephropathy (DN) has become the main cause of end-stage renal disease worldwide. Inflammation is associated with the occurrence and development of DN, and long noncoding RNAs (lncRNAs) are involved in the regulation of inflammatory processes. This study aims to determine the role and mechanism of lncRNA-CES1P1 in DN.C57BL/6 mice and human umbilical vein endothelial cells (HUVECs) were used for this experimental study. In vivo experimental intraperitoneal injection of streptozotocin (STZ) to construct a diabetes mellitus (DM) model in C57BL/6 mice caused increased expression of lncRNA-CES1P1, decreased expression of miR-214-3p in kidney tissue, and produced renal inflammation and proteinuria. Exogenous knockdown of lncRNA-CES1P1 expression decreased renal inflammatory infiltration. In vitro experiments using high glucose (HG) stimulation of HUVECs cell revealed increased expression of lncRNA-CES1P1, decreased expression of miR-214-3p, and increased expression of the inflammatory factors IL-17, IκB, NF-κB, and IL-6. Luciferase reporter assays showed direct targets of miR-214-3p interaction with lncRNA-CES1P1 and IL-17. These results suggest that hyperglycemia represses miR-214-3p by inducing lncRNA-CES1P1, which promotes the expression of the inflammatory factors IL-17, IκB, NF-κB and IL-6 ultimately leading to the development of DN. Interfering with lncRNA-CES1P1 can reduce hyperglycemia-induced DN.
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Affiliation(s)
- Xiaona Zhang
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Long Ren
- Department of Pharmacology, College of Pharmacy, Harbin Medical University, Harbin, China.
| | - Jiaxing Wei
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Yanan Ni
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Lulu Sun
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Xiaoyu Zhao
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Yaguang Zhang
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
| | - Hong Qiao
- Department of Endocrinology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
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Bhusal A, Nam Y, Seo D, Rahman MH, Hwang EM, Kim S, Lee W, Suk K. Cathelicidin‐related antimicrobial peptide promotes neuroinflammation through astrocyte–microglia communication in experimental autoimmune encephalomyelitis. Glia 2022; 70:1902-1926. [DOI: 10.1002/glia.24227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 05/10/2022] [Accepted: 05/25/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Anup Bhusal
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Youngpyo Nam
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Donggun Seo
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Md Habibur Rahman
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- Division of Endocrinology, Department of Medicine Rutgers Robert Wood Johnson Medical School New Brunswick New Jersey USA
| | - Eun Mi Hwang
- Brain Science Institute, Korea Institute of Science and Technology Seoul Republic of Korea
| | - Seung‐Chan Kim
- Brain Science Institute, Korea Institute of Science and Technology Seoul Republic of Korea
| | - Won‐Ha Lee
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group Kyungpook National University Daegu Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine Kyungpook National University Daegu Republic of Korea
- Brain Science and Engineering Institute Kyungpook National University Daegu Republic of Korea
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6
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Yurduseven K, Babal YK, Celik E, Kerman BE, Kurnaz IA. Multiple Sclerosis Biomarker Candidates Revealed by Cell-Type-Specific Interactome Analysis. OMICS : A JOURNAL OF INTEGRATIVE BIOLOGY 2022; 26:305-317. [PMID: 35483054 DOI: 10.1089/omi.2022.0023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Multiple sclerosis (MS) is a demyelinating disorder that affects multiple regions of the central nervous system such as the brain, spinal cord, and optic nerves. Susceptibility to MS, as well as disease progression rates, displays marked patient-to-patient variability. To date, biomarkers that forecast differences in clinical phenotypes and outcomes have been limited. In this context, cell-type-specific interactome analyses offer important prospects and hope for novel diagnostics and therapeutics. We report here an original study using bioinformatic analysis of MS data sets that revealed interaction profiles as well as specific hub proteins in white matter (WM) and gray matter (GM) that appear critical for disease mechanisms. First, cell-type-specific interactome analyses suggested that while interactions within the WM were focused on oligodendrocytes, interactions within the GM were mostly neuron centric. Second, hub proteins such as APP, EGLN3, PTEN, and LRRK2 were identified to be differentially regulated in MS data sets. Lastly, a comparison of the brain and peripheral blood samples identified biomarker candidates such as NRGN, CRTC1, CDC42, and IFITM3 to be differentially expressed in different types of MS. These findings offer a unique cell-type-specific cell-to-cell interaction network in MS and identify potential biomarkers by comparative analysis of the brain and the blood transcriptomics. From a study design and methodology perspective, we suggest that the cell-type-specific interactome analysis is an important systems science frontier that might offer new insights on other neurodegenerative and brain disorders as well.
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Affiliation(s)
- Kübra Yurduseven
- Institute of Biotechnology, Gebze Technical University, Kocaeli, Turkey
- Regenerative and Restorative Medical Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Yigit Koray Babal
- Institute of Biotechnology, Gebze Technical University, Kocaeli, Turkey
| | - Esref Celik
- Regenerative and Restorative Medical Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Bilal Ersen Kerman
- Regenerative and Restorative Medical Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Işıl Aksan Kurnaz
- Institute of Biotechnology, Gebze Technical University, Kocaeli, Turkey
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Kunkl M, Amormino C, Tedeschi V, Fiorillo MT, Tuosto L. Astrocytes and Inflammatory T Helper Cells: A Dangerous Liaison in Multiple Sclerosis. Front Immunol 2022; 13:824411. [PMID: 35211120 PMCID: PMC8860818 DOI: 10.3389/fimmu.2022.824411] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/13/2022] [Indexed: 11/15/2022] Open
Abstract
Multiple Sclerosis (MS) is a neurodegenerative autoimmune disorder of the central nervous system (CNS) characterized by the recruitment of self-reactive T lymphocytes, mainly inflammatory T helper (Th) cell subsets. Once recruited within the CNS, inflammatory Th cells produce several inflammatory cytokines and chemokines that activate resident glial cells, thus contributing to the breakdown of blood-brain barrier (BBB), demyelination and axonal loss. Astrocytes are recognized as key players of MS immunopathology, which respond to Th cell-defining cytokines by acquiring a reactive phenotype that amplify neuroinflammation into the CNS and contribute to MS progression. In this review, we summarize current knowledge of the astrocytic changes and behaviour in both MS and experimental autoimmune encephalomyelitis (EAE), and the contribution of pathogenic Th1, Th17 and Th1-like Th17 cell subsets, and CD8+ T cells to the morphological and functional modifications occurring in astrocytes and their pathological outcomes.
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Affiliation(s)
- Martina Kunkl
- Department of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy.,Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University, Rome, Italy
| | - Carola Amormino
- Department of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy.,Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University, Rome, Italy
| | - Valentina Tedeschi
- Department of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy
| | - Maria Teresa Fiorillo
- Department of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy
| | - Loretta Tuosto
- Department of Biology and Biotechnology Charles Darwin, Sapienza University, Rome, Italy.,Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University, Rome, Italy
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8
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Crotalphine Attenuates Pain and Neuroinflammation Induced by Experimental Autoimmune Encephalomyelitis in Mice. Toxins (Basel) 2021; 13:toxins13110827. [PMID: 34822611 PMCID: PMC8624587 DOI: 10.3390/toxins13110827] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 12/11/2022] Open
Abstract
Multiple sclerosis (MS) is a demyelinating disease of inflammatory and autoimmune origin, which induces sensory and progressive motor impairments, including pain. Cells of the immune system actively participate in the pathogenesis and progression of MS by inducing neuroinflammation, tissue damage, and demyelination. Crotalphine (CRO), a structural analogue to a peptide firstly identified in Crotalus durissus terrificus snake venom, induces analgesia by endogenous opioid release and type 2 cannabinoid receptor (CB2) activation. Since CB2 activation downregulates neuroinflammation and ameliorates symptoms in mice models of MS, it was presently investigated whether CRO has a beneficial effect in the experimental autoimmune encephalomyelitis (EAE). CRO was administered on the 5th day after immunization, in a single dose, or five doses starting at the peak of disease. CRO partially reverted EAE-induced mechanical hyperalgesia and decreased the severity of the clinical signs. In addition, CRO decreases the inflammatory infiltrate and glial cells activation followed by TNF-α and IL-17 downregulation in the spinal cord. Peripherally, CRO recovers the EAE-induced impairment in myelin thickness in the sciatic nerve. Therefore, CRO interferes with central and peripheral neuroinflammation, opening perspectives to MS control.
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Batterman KV, Cabrera PE, Moore TL, Rosene DL. T Cells Actively Infiltrate the White Matter of the Aging Monkey Brain in Relation to Increased Microglial Reactivity and Cognitive Decline. Front Immunol 2021; 12:607691. [PMID: 33664743 PMCID: PMC7920950 DOI: 10.3389/fimmu.2021.607691] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 01/25/2021] [Indexed: 02/06/2023] Open
Abstract
Normal aging is characterized by declines in processing speed, learning, memory, and executive function even in the absence of neurodegenerative diseases such as Alzheimer's Disease (AD). In normal aging monkeys and humans, neuronal loss does not account for cognitive impairment. Instead, loss of white matter volume and an accumulation of myelin sheath pathology begins in middle age and is associated with cognitive decline. It is unknown what causes this myelin pathology, but it likely involves increased neuroinflammation in white matter and failures in oligodendrocyte function (maturation and repair). In frontal white matter tracts vulnerable to myelin damage, microglia become chronically reactive and secrete harmful pro-inflammatory cytokines. Despite being in a phagocytic state, these microglia are ineffective at phagocytosing accruing myelin debris, which directly inhibits myelin sheath repair. Here, we asked whether reported age-related increases in pro-inflammatory markers were accompanied by an adaptive immune response involving T cells. We quantified T cells with immunohistochemistry in the brains of 34 cognitively characterized monkeys and found an age-related increase in perivascular T cells that surround CNS vasculature. We found a surprising age-related increase in T cells that infiltrate the white matter parenchyma. In the cingulum bundle the percentage of these parenchymal T cells increased with age relative to those in the perivascular space. In contrast, infiltrating T cells were rarely found in surrounding gray matter regions. We assessed whether T cell infiltration correlated with fibrinogen extravasation from the vasculature as a measure of BBB leakiness and found no correlation, suggesting that T cell infiltration is not a result of passive extravasation. Importantly, the density of T cells in the cingulum bundle correlated with microglial reactivity and with cognitive impairment. This is the first demonstration that T cell infiltration of white matter is associated with cognitive decline in the normal aging monkey.
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Affiliation(s)
- Katelyn V Batterman
- Laboratory for Cognitive Neurobiology, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, United States
| | - Payton E Cabrera
- Laboratory for Cognitive Neurobiology, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, United States
| | - Tara L Moore
- Laboratory for Cognitive Neurobiology, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, United States.,Laboratory of Interventions for Cortical Injury and Cognitive Decline, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, United States.,Center for Systems Neuroscience, Boston University, Boston, MA, United States
| | - Douglas L Rosene
- Laboratory for Cognitive Neurobiology, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, United States.,Center for Systems Neuroscience, Boston University, Boston, MA, United States
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10
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Deng Q, Ma L, Chen T, Yang Y, Ma Y, Ma L. NF-κB 1-induced LINC00665 regulates inflammation and apoptosis of neurons caused by spinal cord injury by targeting miR-34a-5p. Neurol Res 2021; 43:418-427. [PMID: 33435858 DOI: 10.1080/01616412.2020.1866373] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: Spinal cord injury (SCI) has high disability rate and low cure rate, which frustrates the patients and brings a heavy burden to their families. This study aimed to explore whether NF-κB1 could induce the expression of LINC00665 and form a feedback loop with miR-34a-5p to regulate inflammation and apoptosis of neurons. Results: Basso, Beattie, and Bresnahan (BBB) scoring was decreased, damage for spinal cord tissue was aggravated and neuron number was decreased in SCI rats. The levels of TNF-α, IL-1β and IL-6 in serum and the expression of LINC00665 and NF-κB1 in spinal cord tissues were all increased in SCI rats. After LPS induction, PC12 cell viability was decreased. The expression of LINC00665 and NF-κB1 in LPS-induced PC12 cells was increased, which was partially reversed by BAY11-7082 (NF-κB inhibitor). Inhibition of LINC00665 improved cell viability, suppressed apoptosis and inflammation and down-regulated the NF-κB1 expression in LPS-induced PC12 cells. Furthermore, miR-34a-5p expression was decreased in LPS-induced PC12 cells, which could be promoted by inhibition of LINC00665. miR-34a-5p inhibitor restrained the effect of inhibition of LINC00665 on NF-κB1 expression in LPS-induced PC12 cells. Conclusion: inhibition of LINC00665 improved cell viability, suppressed apoptosis and inflammation in LPS-induced PC12 cells, and the NF-κB1/LINC00665/miR-34a-5ploop might be a useful therapeutic target in SCI treatment.
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Affiliation(s)
- Qilong Deng
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Lili Ma
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Ting Chen
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Yu Yang
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Yuetao Ma
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
| | - Lizhong Ma
- Rehabilitation Medical Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China.,Rehabilitation Medical Center, Luqiao Hospital, Taizhou Enze Medical Center (Group), Taizhou, Zhejiang, China
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11
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Sinha S, Renavikar PS, Crawford MP, Steward-Tharp SM, Brate A, Tsalikian E, Tansey M, Shivapour ET, Cho T, Kamholz J, Karandikar NJ. Altered expression of SIRPγ on the T-cells of relapsing remitting multiple sclerosis and type 1 diabetes patients could potentiate effector responses from T-cells. PLoS One 2020; 15:e0238070. [PMID: 32853219 PMCID: PMC7451561 DOI: 10.1371/journal.pone.0238070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 08/08/2020] [Indexed: 11/19/2022] Open
Abstract
Factors regulating self-antigen directed immune-responses in autoimmunity are poorly understood. Signal regulatory protein gamma (SIRPγ) is a human T-cell specific protein with genetic variants associated with type 1 diabetes (T1D). SIRPγ's function in the immune system remains unclear. We show that T1D and relapsing remitting multiple sclerosis (RRMS) subjects have significantly greater frequency of rs2281808 T genetic variant, that correlates with reduced SIRPγ-expression in T-cells. Importantly, reduced SIRPγ-expression in RRMS and T1D subjects was not restricted to T variant, suggesting SIRPγ-expression is also regulated by disease specific factors in autoimmunity. Interestingly, increased frequencies of SIRPγlow T-cells in RRMS and T1D positively correlated with proinflammatory molecules from T-cells. Finally, we show that SIRPγlow T-cells have enhanced pathogenecity in vivo in a GVHD model. These findings suggest that decreased-SIRPγ expression, either determined by genetic variants or through peripherally acquired processes, may have a mechanistic link to autoimmunity through induction of hyperactive T-cells.
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Affiliation(s)
- Sushmita Sinha
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
- * E-mail:
| | - Pranav S. Renavikar
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Michael P. Crawford
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Scott M. Steward-Tharp
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry, University of Iowa, Iowa City, Iowa, United States of America
| | - Ashley Brate
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Eva Tsalikian
- Department of Pediatrics, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Michael Tansey
- Department of Pediatrics, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Ezzatollah T. Shivapour
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Tracey Cho
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - John Kamholz
- Department of Neurology, University of Iowa Health Care, Iowa City, Iowa, United States of America
| | - Nitin J. Karandikar
- Department of Pathology, University of Iowa Health Care, Iowa City, Iowa, United States of America
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12
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Iba M, Kim C, Sallin M, Kwon S, Verma A, Overk C, Rissman RA, Sen R, Sen JM, Masliah E. Neuroinflammation is associated with infiltration of T cells in Lewy body disease and α-synuclein transgenic models. J Neuroinflammation 2020; 17:214. [PMID: 32680537 PMCID: PMC7368752 DOI: 10.1186/s12974-020-01888-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/06/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND α-Synuclein (α-syn) is a pre-synaptic protein which progressively accumulates in neuronal and non-neuronal cells in neurodegenerative diseases such as Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy. Recent evidence suggests that aberrant immune activation may be involved in neurodegeneration in PD/DLB. While previous studies have often focused on the microglial responses, less is known about the role of the peripheral immune system in these disorders. METHODS To understand the involvement of the peripheral immune system in PD/DLB, we evaluated T cell populations in the brains of α-syn transgenic (tg) mice (e.g., Thy1 promoter line 61) and DLB patients. RESULTS Immunohistochemical analysis showed perivascular and parenchymal infiltration by CD3+/CD4+ helper T cells, but not cytotoxic T cells (CD3+/CD8+) or B cells (CD20+), in the neocortex, hippocampus, and striatum of α-syn tg mice. CD3+ cells were found in close proximity to the processes of activated astroglia, particularly in areas of the brain with significant astrogliosis, microgliosis, and expression of pro-inflammatory cytokines. In addition, a subset of CD3+ cells co-expressed interferon γ. Flow cytometric analysis of immune cells in the brains of α-syn tg mice revealed that CD1d-tet+ T cells were also increased in the brains of α-syn tg mice suggestive of natural killer T cells. In post-mortem DLB brains, we similarly detected increased numbers of infiltrating CD3+/CD4+ T cells in close proximity with blood vessels. CONCLUSION These results suggest that infiltrating adaptive immune cells play an important role in neuroinflammation and neurodegeneration in synucleinopathies and that modulating peripheral T cells may be a viable therapeutic strategy for PD/DLB.
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Affiliation(s)
- Michiyo Iba
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Changyoun Kim
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Michelle Sallin
- Laboratory of Clinical Investigation, Immune Cells and Inflammation Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Somin Kwon
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Anjali Verma
- Laboratory of Clinical Investigation, Immune Cells and Inflammation Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Cassia Overk
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Robert A Rissman
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Ranjan Sen
- Laboratory of Molecular Biology and Immunology, Gene Regulation Section, Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
- Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Jyoti Misra Sen
- Laboratory of Clinical Investigation, Immune Cells and Inflammation Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
- Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Eliezer Masliah
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA.
- Division of Neuroscience, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20814, USA.
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13
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Rahmani M, Rahimian Boogar I, Talepasand S, Nokani M. Comparing the Effectiveness of Computer-Based, Manual-based, and Combined Cognitive Rehabilitation on Cognitive Functions in Relapsing-Remitting Multiple Sclerosis Patients. Basic Clin Neurosci 2020; 11:99-110. [PMID: 32483480 PMCID: PMC7253816 DOI: 10.32598/bcn.9.10.430] [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: 09/14/2018] [Revised: 10/25/2018] [Accepted: 03/19/2019] [Indexed: 11/20/2022] Open
Abstract
Introduction This study aimed to compare the effectiveness of computer-based, manual-based, and combined cognitive rehabilitation to improve cognitive functions among patients with Relapsing-Remitting Multiple Sclerosis (RRMS). Methods This was a quasi-experimental study with a pre-test-post-test, and a 2-month follow-up, as well as a control group design. Sixty female patients with RRMS were selected by convenience sampling technique. Then they were randomly assigned into three experimental groups (computer-based, manual-based, and combined cognitive rehabilitation, each group including 12 patients), a placebo group (12 patients), and a control group (12 patients). The interventions were conducted in 21 sessions for the experimental groups for 5 months. The placebo group received physical rehabilitation intervention, and the control group received no intervention. The study participants were assessed by Psychiatric-Neurological Profile, Mini-Mental State Examination, Kurtzke Expanded Disability Status Scale, Stroop Color and Word Test, Wisconsin Card Sorting Test, and Paced Auditory Serial Addition Test. The obtained data were analyzed by repeated-measures multivariate analysis of variance in SPSS. Results The effect of group factor was not significant (η2=0.129), but the effect of time (η2=0.884) and interaction effect of time and group (η2=0.295) were statistically significant (P<0.05). There was no significant difference between the effects of all three rehabilitation interventions (P>0.05). In the post-test totally and in Follow-up partially, all comparisons among three experimental groups with control and placebo groups were statistically significant (P<0.05). Conclusion Cognitive rehabilitation was effective in improving cognitive functions in patients with RRMS. Thus, these interventions are recommended for application, along with other treatment protocols to treat RRMS in clinical settings.
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Affiliation(s)
- Mehri Rahmani
- Department of Clinical Psychology, Faculty of Psychology and Educational Sciences, Semnan University, Mahdishahr, Semnan, Iran
| | - Isaac Rahimian Boogar
- Department of Clinical Psychology, Faculty of Psychology and Educational Sciences, Semnan University, Mahdishahr, Semnan, Iran
| | - Siavash Talepasand
- Department of Clinical Psychology, Faculty of Psychology and Educational Sciences, Semnan University, Mahdishahr, Semnan, Iran
| | - Mostafa Nokani
- Department of Clinical Psychology, Arak University of Medical Sciences, Arak, Iran
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14
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Ito M, Komai K, Nakamura T, Srirat T, Yoshimura A. Tissue regulatory T cells and neural repair. Int Immunol 2020; 31:361-369. [PMID: 30893423 DOI: 10.1093/intimm/dxz031] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 03/19/2019] [Indexed: 12/18/2022] Open
Abstract
Inflammation and immune responses after tissue injury play pivotal roles in the pathology, resolution of inflammation, tissue recovery, fibrosis and remodeling. Regulatory T cells (Tregs) are the cells responsible for suppressing immune responses and can be activated in secondary lymphatic tissues, where they subsequently regulate effector T cell and dendritic cell activation. Recently, Tregs that reside in non-lymphoid tissues, called tissue Tregs, have been shown to exhibit tissue-specific functions that contribute to the maintenance of tissue homeostasis and repair. Unlike other tissue Tregs, the role of Tregs in the brain has not been well elucidated because the number of brain Tregs is very small under normal conditions. However, we found that Tregs accumulate in the brain at the chronic phase of ischemic brain injury and control astrogliosis through secretion of a cytokine, amphiregulin (Areg). Brain Tregs resemble other tissue Tregs in many ways but, unlike the other tissue Tregs, brain Tregs express neural-cell-specific genes such as the serotonin receptor (Htr7) and respond to serotonin. Administering serotonin or selective serotonin reuptake inhibitors (SSRIs) in an experimental mouse model of stroke increases the number of brain Tregs and ameliorates neurological symptoms. Knowledge of brain Tregs will contribute to the understanding of various types of neuroinflammation.
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Affiliation(s)
- Minako Ito
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kyoko Komai
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Toshihiro Nakamura
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Tanakorn Srirat
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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15
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Perriot S, Mathias A, Perriard G, Canales M, Jonkmans N, Merienne N, Meunier C, El Kassar L, Perrier AL, Laplaud DA, Schluep M, Déglon N, Du Pasquier R. Human Induced Pluripotent Stem Cell-Derived Astrocytes Are Differentially Activated by Multiple Sclerosis-Associated Cytokines. Stem Cell Reports 2018; 11:1199-1210. [PMID: 30409508 PMCID: PMC6234919 DOI: 10.1016/j.stemcr.2018.09.015] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 09/26/2018] [Accepted: 09/27/2018] [Indexed: 02/08/2023] Open
Abstract
Recent studies highlighted the importance of astrocytes in neuroinflammatory diseases, interacting closely with other CNS cells but also with the immune system. However, due to the difficulty in obtaining human astrocytes, their role in these pathologies is still poorly characterized. Here, we develop a serum-free protocol to differentiate human induced pluripotent stem cells (hiPSCs) into astrocytes. Gene expression and functional assays show that our protocol consistently yields a highly enriched population of resting mature astrocytes across the 13 hiPSC lines differentiated. Using this model, we first highlight the importance of serum-free media for astrocyte culture to generate resting astrocytes. Second, we assess the astrocytic response to IL-1β, TNF-α, and IL-6, all cytokines important in neuroinflammation, such as multiple sclerosis. Our study reveals very specific profiles of reactive astrocytes depending on the triggering stimulus. This model provides ideal conditions for in-depth and unbiased characterization of astrocyte reactivity in neuroinflammatory conditions.
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Affiliation(s)
- Sylvain Perriot
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Amandine Mathias
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Guillaume Perriard
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Mathieu Canales
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Nils Jonkmans
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Nicolas Merienne
- Laboratory of Neurotherapies and NeuroModulation, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Cécile Meunier
- Laboratory of Neurotherapies and NeuroModulation, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Lina El Kassar
- Institute for Stem Cell Therapy and Exploration of Monogenic Diseases (I-Stem), Corbeil-Essonnes, France
| | - Anselme L Perrier
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR861, I-Stem, AFM, Corbeil-Essonnes, France
| | - David-Axel Laplaud
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
| | - Myriam Schluep
- Service of Neurology, Department of Clinical Neurosciences, CHUV, CHUV BH-10/131, 46, rue du Bugnon, Lausanne 1011, Switzerland
| | - Nicole Déglon
- Laboratory of Neurotherapies and NeuroModulation, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland
| | - Renaud Du Pasquier
- Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, CHUV, Lausanne, Switzerland; Service of Neurology, Department of Clinical Neurosciences, CHUV, CHUV BH-10/131, 46, rue du Bugnon, Lausanne 1011, Switzerland.
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16
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Insights into the Role of Neuroinflammation in the Pathogenesis of Multiple Sclerosis. J Funct Morphol Kinesiol 2018. [DOI: 10.3390/jfmk3010013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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17
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Gharagozloo M, Gris KV, Mahvelati T, Amrani A, Lukens JR, Gris D. NLR-Dependent Regulation of Inflammation in Multiple Sclerosis. Front Immunol 2018; 8:2012. [PMID: 29403486 PMCID: PMC5778124 DOI: 10.3389/fimmu.2017.02012] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/28/2017] [Indexed: 12/22/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) associated with inappropriate activation of lymphocytes, hyperinflammatory responses, demyelination, and neuronal damage. In the past decade, a number of biological immunomodulators have been developed that suppress the peripheral immune responses and slow down the progression of the disease. However, once the inflammation of the CNS has commenced, it can cause serious permanent neuronal damage. Therefore, there is a need for developing novel therapeutic approaches that control and regulate inflammatory responses within the CNS. Nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) are intracellular regulators of inflammation expressed by many cell types within the CNS. They redirect multiple signaling pathways initiated by pathogens and molecules released by injured tissues. NLR family members include positive regulators of inflammation, such as NLRP3 and NLRC4 and anti-inflammatory NLRs, such as NLRX1 and NLRP12. They exert immunomodulatory effect at the level of peripheral immune responses, including antigen recognition and lymphocyte activation and differentiation. Also, NLRs regulate tissue inflammatory responses. Understanding the molecular mechanisms that are placed at the crossroad of innate and adaptive immune responses, such as NLR-dependent pathways, could lead to the discovery of new therapeutic targets. In this review, we provide a summary of the role of NLRs in the pathogenesis of MS. We also summarize how anti-inflammatory NLRs regulate the immune response within the CNS. Finally, we speculate the therapeutic potential of targeting NLRs in MS.
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Affiliation(s)
- Marjan Gharagozloo
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Katsiaryna V. Gris
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Tara Mahvelati
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Abdelaziz Amrani
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - John R. Lukens
- Center for Brain Immunology and Glia, Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Denis Gris
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
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18
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Willis CM, Ménoret A, Jellison ER, Nicaise AM, Vella AT, Crocker SJ. A Refined Bead-Free Method to Identify Astrocytic Exosomes in Primary Glial Cultures and Blood Plasma. Front Neurosci 2017; 11:335. [PMID: 28663721 PMCID: PMC5471332 DOI: 10.3389/fnins.2017.00335] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 05/29/2017] [Indexed: 01/05/2023] Open
Abstract
Astrocytes are the most abundant glial cell type in the central nervous system (CNS) and are known to fulfill critical homeostatic functions. Dysfunction of activated astrocytes is also known to participate in the development of several neurological diseases. Astrocytes can be uniquely identified by expression of the intermediate filament protein glial acidic fibrillary protein (GFAP). Herein, we report on the development of a rigorous and sensitive methodology to identify GFAP+ exosomes in primary culture using flow cytometry. We then demonstrate that activated astrocytes release increased amounts of exosomes in response to treatment with interleukin-1β. Using this methodology, we report the identification of GFAP+ exosomes in blood and then use a mouse model of inflammatory demyelination, experimental autoimmune encephalomyelitis (EAE), to examine whether the abundance of GFAP+ exosomes in blood circulation changes during clinical illness. We find a detectable increase in the presence of GFAP+ exosomes in EAE mice when compared with non-EAE, control mice. Our data provide a novel perspective on the presence of GFAP in blood as it identifies exosomes as potential astrocyte-derived signals within blood. These data are complementary to previous clinical studies that reported elevated GFAP protein in blood samples from multiple sclerosis (MS) patients during a clinical relapse. These data also reveal the existence of a potential systemic role for astrocyte-derived exosomes in CNS conditions involving inflammation such as multiple sclerosis.
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Affiliation(s)
- Cory M Willis
- Departments of Neuroscience, University of Connecticut School of MedicineFarmington, CT, United States
| | - Antoine Ménoret
- Departments of Immunology, University of Connecticut School of MedicineFarmington, CT, United States
| | - Evan R Jellison
- Departments of Immunology, University of Connecticut School of MedicineFarmington, CT, United States
| | - Alexandra M Nicaise
- Departments of Neuroscience, University of Connecticut School of MedicineFarmington, CT, United States
| | - Anthony T Vella
- Departments of Immunology, University of Connecticut School of MedicineFarmington, CT, United States
| | - Stephen J Crocker
- Departments of Neuroscience, University of Connecticut School of MedicineFarmington, CT, United States
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19
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Pilli D, Zou A, Tea F, Dale RC, Brilot F. Expanding Role of T Cells in Human Autoimmune Diseases of the Central Nervous System. Front Immunol 2017. [PMID: 28638382 PMCID: PMC5461350 DOI: 10.3389/fimmu.2017.00652] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
It is being increasingly recognized that a dysregulation of the immune system plays a vital role in neurological disorders and shapes the treatment of the disease. Aberrant T cell responses, in particular, are key in driving autoimmunity and have been traditionally associated with multiple sclerosis. Yet, it is evident that there are other neurological diseases in which autoreactive T cells have an active role in pathogenesis. In this review, we report on the recent progress in profiling and assessing the functionality of autoreactive T cells in central nervous system (CNS) autoimmune disorders that are currently postulated to be primarily T cell driven. We also explore the autoreactive T cell response in a recently emerging group of syndromes characterized by autoantibodies against neuronal cell-surface proteins. Common methodology implemented in T cell biology is further considered as it is an important determinant in their detection and characterization. An improved understanding of the contribution of autoreactive T cells expands our knowledge of the autoimmune response in CNS disorders and can offer novel methods of therapeutic intervention.
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Affiliation(s)
- Deepti Pilli
- Brain Autoimmunity Group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at The Children's Hospital at Westmead, University of Sydney, Sydney, NSW, Australia
| | - Alicia Zou
- Brain Autoimmunity Group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at The Children's Hospital at Westmead, University of Sydney, Sydney, NSW, Australia
| | - Fiona Tea
- Brain Autoimmunity Group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at The Children's Hospital at Westmead, University of Sydney, Sydney, NSW, Australia
| | - Russell C Dale
- Brain Autoimmunity Group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at The Children's Hospital at Westmead, University of Sydney, Sydney, NSW, Australia.,Brain and Mind Centre, University of Sydney, Sydney, NSW, Australia
| | - Fabienne Brilot
- Brain Autoimmunity Group, Institute for Neuroscience and Muscle Research, The Kids Research Institute at The Children's Hospital at Westmead, University of Sydney, Sydney, NSW, Australia.,Brain and Mind Centre, University of Sydney, Sydney, NSW, Australia
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20
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Ritzel RM, Crapser J, Patel AR, Verma R, Grenier JM, Chauhan A, Jellison ER, McCullough LD. Age-Associated Resident Memory CD8 T Cells in the Central Nervous System Are Primed To Potentiate Inflammation after Ischemic Brain Injury. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2016; 196:3318-30. [PMID: 26962232 PMCID: PMC4868658 DOI: 10.4049/jimmunol.1502021] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/05/2016] [Indexed: 01/17/2023]
Abstract
Aging is associated with an increase in basal inflammation in the CNS and an overall decline in cognitive function and poorer recovery following injury. Growing evidence suggests that leukocyte recruitment to the CNS is also increased with normal aging, but, to date, no systematic evaluation of these age-associated leukocytes has been performed. In this work, the effect of aging on CNS leukocyte recruitment was examined. Aging was associated with more CD45(high) leukocytes, primarily composed of conventional CD8(+) T cells. These results were strain independent and seen in both sexes. Intravascular labeling and immunohistology revealed the presence of parenchymal CD8(+) T cells in several regions of the brain, including the choroid plexus and meninges. These cells had effector memory (CD44(+)CD62L(-)) and tissue-resident phenotypes and expressed markers associated with TCR activation. Analysis of TCRvβ repertoire usage suggested that entry into the CNS is most likely stochastic rather than Ag driven. Correlational analyses revealed a positive association between CD8 T cell numbers and decreased proinflammatory function of microglia. However, the effects of cerebral ischemia and ex vivo stimulation of these cells dramatically increased production of TNF, IFN-γ, and MCP-1/CCL2. Taken together, we identified a novel population of resident memory, immunosurveillant CD8 T cells that represent a hallmark of CNS aging and appear to modify microglia homeostasis under normal conditions, but are primed to potentiate inflammation and leukocyte recruitment following ischemic injury.
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Affiliation(s)
- Rodney M Ritzel
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030
| | - Joshua Crapser
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030
| | - Anita R Patel
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030
| | - Rajkumer Verma
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030
| | - Jeremy M Grenier
- Immunology Department, University of Connecticut Health Center, Farmington, CT 06030; and
| | - Anjali Chauhan
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030
| | - Evan R Jellison
- Immunology Department, University of Connecticut Health Center, Farmington, CT 06030; and
| | - Louise D McCullough
- Neuroscience Department, University of Connecticut Health Center, Farmington, CT 06030; Department of Neurology, McGovern Medical School, University of Texas Health Science Center, Houston, TX 77370
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21
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Ligocki AJ, Rivas JR, Rounds WH, Guzman AA, Li M, Spadaro M, Lahey L, Chen D, Henson PM, Graves D, Greenberg BM, Frohman EM, Ward ES, Robinson W, Meinl E, White CL, Stowe AM, Monson NL. A Distinct Class of Antibodies May Be an Indicator of Gray Matter Autoimmunity in Early and Established Relapsing Remitting Multiple Sclerosis Patients. ASN Neuro 2015; 7:7/5/1759091415609613. [PMID: 26489686 PMCID: PMC4710131 DOI: 10.1177/1759091415609613] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
*These authors contributed equally to the work in this manuscript.We have previously identified a distinct class of antibodies expressed by B cells in the cerebrospinal fluid (CSF) of early and established relapsing remitting multiple sclerosis (RRMS) patients that is not observed in healthy donors. These antibodies contain a unique pattern of mutations in six codons along VH4 antibody genes that we termed the antibody gene signature (AGS). In fact, patients who have such B cells in their CSF are identified as either having RRMS or developing RRMS in the future. As mutations in antibody genes increase antibody affinity for particular antigens, the goal for this study was to investigate whether AGS(+) antibodies bind to brain tissue antigens. Single B cells were isolated from the CSF of 10 patients with early or established RRMS. We chose 32 of these B cells that expressed antibodies enriched for the AGS for further study. We generated monoclonal full-length recombinant human antibodies (rhAbs) and used both immunological assays and immunohistochemistry to investigate the capacity of these AGS(+) rhAbs to bind brain tissue antigens. AGS(+) rhAbs did not recognize myelin tracts in the corpus callosum. Instead, AGS(+) rhAbs recognized neuronal nuclei and/or astrocytes, which are prevalent in the cortical gray matter. This pattern was unique to the AGS(+) antibodies from early and established RRMS patients, as AGS(+) antibodies from an early neuromyelitis optica patient did not display the same reactivity. Prevalence of CSF-derived B cells expressing AGS(+) antibodies that bind to these cell types may be an indicator of gray matter-directed autoimmunity in early and established RRMS patients.
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Affiliation(s)
- Ann J Ligocki
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jacqueline R Rivas
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - William H Rounds
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Alyssa A Guzman
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Min Li
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Melania Spadaro
- Institute of Clinical Neuroimmunology, Ludwig-Maximilian-University, Munich, Germany
| | - Lauren Lahey
- Department of Immunology and Rheumatology, Stanford University, CA, USA
| | - Ding Chen
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Paul M Henson
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Donna Graves
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Benjamin M Greenberg
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Elliot M Frohman
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - E Sally Ward
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - William Robinson
- Department of Immunology and Rheumatology, Stanford University, CA, USA
| | - Edgar Meinl
- Institute of Clinical Neuroimmunology, Ludwig-Maximilian-University, Munich, Germany
| | - Charles L White
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ann M Stowe
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nancy L Monson
- Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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