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Sarkar SK, Willson AML, Jordan MA. The Plasticity of Immune Cell Response Complicates Dissecting the Underlying Pathology of Multiple Sclerosis. J Immunol Res 2024; 2024:5383099. [PMID: 38213874 PMCID: PMC10783990 DOI: 10.1155/2024/5383099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 01/13/2024] Open
Abstract
Multiple sclerosis (MS) is a neurodegenerative autoimmune disease characterized by the destruction of the myelin sheath of the neuronal axon in the central nervous system. Many risk factors, including environmental, epigenetic, genetic, and lifestyle factors, are responsible for the development of MS. It has long been thought that only adaptive immune cells, especially autoreactive T cells, are responsible for the pathophysiology; however, recent evidence has indicated that innate immune cells are also highly involved in disease initiation and progression. Here, we compile the available data regarding the role immune cells play in MS, drawn from both human and animal research. While T and B lymphocytes, chiefly enhance MS pathology, regulatory T cells (Tregs) may serve a more protective role, as can B cells, depending on context and location. Cells chiefly involved in innate immunity, including macrophages, microglia, astrocytes, dendritic cells, natural killer (NK) cells, eosinophils, and mast cells, play varied roles. In addition, there is evidence regarding the involvement of innate-like immune cells, such as γδ T cells, NKT cells, MAIT cells, and innate-like B cells as crucial contributors to MS pathophysiology. It is unclear which of these cell subsets are involved in the onset or progression of disease or in protective mechanisms due to their plastic nature, which can change their properties and functions depending on microenvironmental exposure and the response of neural networks in damage control. This highlights the need for a multipronged approach, combining stringently designed clinical data with carefully controlled in vitro and in vivo research findings, to identify the underlying mechanisms so that more effective therapeutics can be developed.
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Affiliation(s)
- Sujan Kumar Sarkar
- Department of Anatomy, Histology and Physiology, Faculty of Animal Science and Veterinary Medicine, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Annie M. L. Willson
- Biomedical Sciences and Molecular Biology, CPHMVS, James Cook University, Townsville, Queensland 4811, Australia
| | - Margaret A. Jordan
- Biomedical Sciences and Molecular Biology, CPHMVS, James Cook University, Townsville, Queensland 4811, Australia
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Diddens J, Lepennetier G, Friedrich V, Schmidt M, Brand RM, Georgieva T, Hemmer B, Lehmann-Horn K. Single-Cell Profiling Indicates a Proinflammatory Role of Meningeal Ectopic Lymphoid Tissue in Experimental Autoimmune Encephalomyelitis. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2024; 11:e200185. [PMID: 38100739 PMCID: PMC10723639 DOI: 10.1212/nxi.0000000000200185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/28/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND AND OBJECTIVES The factors that drive progression in multiple sclerosis (MS) remain obscure. Identification of key properties of meningeal inflammation will contribute to a better understanding of the mechanisms of progression and how to prevent it. METHODS Applying single-cell RNA sequencing, we compared gene expression profiles in immune cells from meningeal ectopic lymphoid tissue (mELT) with those from secondary lymphoid organs (SLOs) in spontaneous chronic experimental autoimmune encephalomyelitis (EAE), an animal model of MS. RESULTS Generally, mELT contained the same immune cell types as SLOs, suggesting a close relationship. Preponderance of B cells over T cells, an increase in regulatory T cells and granulocytes, and a decrease in naïve CD4+ T cells characterize mELT compared with SLOs. Differential gene expression analysis revealed that immune cells in mELT show a more activated and proinflammatory phenotype compared with their counterparts in SLOs. However, the increase in regulatory T cells and upregulation of immunosuppressive genes in most immune cell types indicate that there are mechanisms in place to counter-regulate the inflammatory events, keeping the immune response emanating from mELT in check. DISCUSSION Common features in immune cell composition and gene expression indicate that mELT resembles SLOs and may be regarded as a tertiary lymphoid tissue. Distinct differences in expression profiles suggest that mELT rather than SLOs is a key driver of CNS inflammation in spontaneous EAE. Our data provide a starting point for further exploration of molecules or pathways that could be targeted to disrupt mELT formation.
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Affiliation(s)
- Jolien Diddens
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Gildas Lepennetier
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Verena Friedrich
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Monika Schmidt
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Rosa M Brand
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Tanya Georgieva
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Bernhard Hemmer
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
| | - Klaus Lehmann-Horn
- From the Department of Neurology (J.D., G.L., V.F., M.S., R.M.B., T.G., B.H., K.L.-H.), School of Medicine, Technical University of Munich; and Munich Cluster of Systems Neurology (SyNergy) (B.H.), Germany
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Li F, Liang Z, Zhong H, Hu X, Tang Z, Zhu C, Shen J, Han X, Lin R, Zheng R, Tang R, Peng H, Zheng X, Mo C, Chen P, Wang X, Wen Q, Li J, Xia X, Ye H, Qiu Y, Yu J, Fu D, Liu J, Wang R, Xie H, Guo Y, Li X, Fan J, Liu Q, Mao H, Chen W, Zhou Y. Group 3 Innate Lymphoid Cells Exacerbate Lupus Nephritis by Promoting B Cell Activation in Kidney Ectopic Lymphoid Structures. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302804. [PMID: 37915129 PMCID: PMC10724443 DOI: 10.1002/advs.202302804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/28/2023] [Indexed: 11/03/2023]
Abstract
Group 3 innate lymphoid cells (ILC3s) represent a new population in immune regulation, yet their role in lupus nephritis (LN) remains elusive. In the present work, systemic increases in ILC3s, particularly in the kidney, are observed to correlate strongly with disease severity in both human and murine LN. Using MRL/lpr lupus mice and a nephrotoxic serum-induced LN model, this study demonstrates that ILC3s accumulated in the kidney migrate predominantly from the intestine. Furthermore, intestinal ILC3s accelerate LN progression, manifested by exacerbated autoimmunity and kidney injuries. In LN kidneys, ILC3s are located adjacent to B cells within ectopic lymphoid structures (ELS), directly activating B cell differentiation into plasma cells and antibody production in a Delta-like1 (DLL1)/Notch-dependent manner. Blocking DLL1 attenuates ILC3s' effects and protects against LN. Altogether, these findings reveal a novel pathogenic role of ILC3s in B cell activation, renal ELS formation and autoimmune injuries during LN, shedding light on the therapeutic value of targeting ILC3s for LN.
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Affiliation(s)
- Feng Li
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Zhou Liang
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Haojie Zhong
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
- Department of Hepatobiliary and Pancreatic SurgeryThe First Affiliated Hospital, Shenzhen UniversityShenzhen518000China
| | - Xinrong Hu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Ziwen Tang
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Changjian Zhu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Jiani Shen
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Xu Han
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Ruoni Lin
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Ruilin Zheng
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Ruihan Tang
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Huajing Peng
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Xunhua Zheng
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Chengqiang Mo
- Department of UrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
| | - Peisong Chen
- Department of Laboratory MedicineThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
| | - Xin Wang
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Qiong Wen
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Jianbo Li
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Xi Xia
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Hongjian Ye
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Yagui Qiu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Jianwen Yu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Dongying Fu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Jiaqi Liu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Rong Wang
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Huixin Xie
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Yun Guo
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Xiaoyan Li
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Jinjin Fan
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Qinghua Liu
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Haiping Mao
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Wei Chen
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
| | - Yi Zhou
- Department of NephrologyThe First Affiliated Hospital, Sun Yat‐sen UniversityGuangzhou510080China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat‐Sen University) and Guangdong Provincial Key Laboratory of NephrologyGuangzhou510080China
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Laaker C, Baenen C, Kovács KG, Sandor M, Fabry Z. Immune cells as messengers from the CNS to the periphery: the role of the meningeal lymphatic system in immune cell migration from the CNS. Front Immunol 2023; 14:1233908. [PMID: 37662908 PMCID: PMC10471710 DOI: 10.3389/fimmu.2023.1233908] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
In recent decades there has been a large focus on understanding the mechanisms of peripheral immune cell infiltration into the central nervous system (CNS) in neuroinflammatory diseases. This intense research led to several immunomodulatory therapies to attempt to regulate immune cell infiltration at the blood brain barrier (BBB), the choroid plexus (ChP) epithelium, and the glial barrier. The fate of these infiltrating immune cells depends on both the neuroinflammatory environment and their type-specific interactions with innate cells of the CNS. Although the fate of the majority of tissue infiltrating immune cells is death, a percentage of these cells could become tissue resident immune cells. Additionally, key populations of immune cells can possess the ability to "drain" out of the CNS and act as messengers reporting signals from the CNS toward peripheral lymphatics. Recent data supports that the meningeal lymphatic system is involved not just in fluid homeostatic functions in the CNS but also in facilitating immune cell migration, most notably dendritic cell migration from the CNS to the meningeal borders and to the draining cervical lymph nodes. Similar to the peripheral sites, draining immune cells from the CNS during neuroinflammation have the potential to coordinate immunity in the lymph nodes and thus influence disease. Here in this review, we will evaluate evidence of immune cell drainage from the brain via the meningeal lymphatics and establish the importance of this in animal models and humans. We will discuss how targeting immune cells at sites like the meningeal lymphatics could provide a new mechanism to better provide treatment for a variety of neurological conditions.
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Affiliation(s)
- Collin Laaker
- Neuroscience Training Program, University of Wisconsin Madison, Madison, WI, United States
| | - Cameron Baenen
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin Madison, Madison, WI, United States
| | - Kristóf G. Kovács
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin Madison, Madison, WI, United States
| | - Matyas Sandor
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin Madison, Madison, WI, United States
| | - Zsuzsanna Fabry
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin Madison, Madison, WI, United States
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Balazs I, Horvath A, Heschl B, Khalil M, Enzinger C, Stadlbauer V, Seifert-Held T. Anti-CD20 treatment and neutrophil function in central nervous system demyelinating diseases. J Neuroimmunol 2023; 381:578136. [PMID: 37364519 DOI: 10.1016/j.jneuroim.2023.578136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/29/2023] [Accepted: 06/18/2023] [Indexed: 06/28/2023]
Abstract
INTRODUCTION A contribution of neutrophil granulocytes to the pathogenesis of multiple sclerosis (MS) and neuromyelitis optica spectrum disorders (NMOSD) is recognized. Anti-CD20 treatments applied in these diseases are associated with infectious complications and neutropenia. No data is available about functional characteristics of neutrophils obtained from patients with anti-CD20 treatments. METHODS In neutrophils isolated from 13 patients with anti-CD20 treatment (9 MS, 4 NMOSD), 11 patients without anti-CD20 treatment (9 MS, 2 NMOSD) and 5 healthy controls, we analyzed chemotaxis, production of reactive oxygen species (ROS), phagocytosis, and formation of neutrophil extracellular traps (NET) in vitro. RESULTS Chemotaxis and ROS production were found unchanged between patients with and without anti-CD20 treatment or between patients and healthy controls. We found a higher proportion of non-phagocytosing cells in patients without anti-CD20 treatment compared to patients with anti-CD20 treatment and healthy controls. As compared to healthy controls, a higher proportion of neutrophils from patients without anti-CD20 treatments underwent NET formation, either unstimulated or stimulated with phorbol 12-myristate 3-acetate for 3 h. In about half of patients with anti-CD20 treatment (n = 7), NET formation of unstimulated neutrophils occurred already within 20 min of incubation. This was not observed in patients without anti-CD20 treatment and healthy controls. CONCLUSION Anti-CD20 treatment in MS and NMOSD patients does not alter chemotaxis and ROS production of neutrophils in vitro but might restore their impaired phagocytosis in these diseases. Our study reveals a predisposition to early NET formation in vitro of neutrophils obtained from patients with anti-CD20 treatment. This may contribute to associated risks of neutropenia and infections.
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Affiliation(s)
- Irina Balazs
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria; Center for Biomarker Research in Medicine, Stiftingtalstrasse 5, 8010 Graz, Austria
| | - Angela Horvath
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria; Center for Biomarker Research in Medicine, Stiftingtalstrasse 5, 8010 Graz, Austria
| | - Bettina Heschl
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036 Graz, Austria
| | - Michael Khalil
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036 Graz, Austria
| | - Christian Enzinger
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036 Graz, Austria
| | - Vanessa Stadlbauer
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria; Center for Biomarker Research in Medicine, Stiftingtalstrasse 5, 8010 Graz, Austria
| | - Thomas Seifert-Held
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036 Graz, Austria; Department of Neurology, Hospital Murtal, Gaaler Strasse 10, 8720 Knittelfeld, Austria.
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Patrick MT, Nair RP, He K, Stuart PE, Billi AC, Zhou X, Gudjonsson JE, Oksenberg JR, Elder JT, Tsoi LC. Shared Genetic Risk Factors for Multiple Sclerosis/Psoriasis Suggest Involvement of Interleukin-17 and Janus Kinase-Signal Transducers and Activators of Transcription Signaling. Ann Neurol 2023; 94:384-397. [PMID: 37127916 PMCID: PMC10524664 DOI: 10.1002/ana.26672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 05/03/2023]
Abstract
OBJECTIVE Psoriasis and multiple sclerosis (MS) are complex immune diseases that are mediated by T cells and share multiple comorbidities. Previous studies have suggested psoriatic patients are at higher risk of MS; however, causal relationships between the two conditions remain unclear. Through epidemiology and genetics, we provide a comprehensive understanding of the relationship, and share molecular factors between psoriasis and MS. METHODS We used logistic regression, trans-disease meta-analysis and Mendelian randomization. Medical claims data were included from 30 million patients, including 141,544 with MS and 742,919 with psoriasis. We used genome-wide association study summary statistics from 11,024 psoriatic, 14,802 MS cases, and 43,039 controls for trans-disease meta-analysis, with additional summary statistics from 5 million individuals for Mendelian randomization. RESULTS Psoriatic patients have a significantly higher risk of MS (4,637 patients with both diseases; odds ratio [OR] 1.07, p = 1.2 × 10-5 ) after controlling for potential confounders. Using inverse variance and equally weighted trans-disease meta-analysis, we revealed >20 shared and opposing (direction of effect) genetic loci outside the major histocompatibility complex that showed significant genetic colocalization (in COLOC and COLOC-SuSiE v5.1.0). Co-expression analysis of genes from these loci further identified distinct clusters that were enriched among pathways for interleukin-17/tumor necrosis factor-α (OR >39, p < 1.6 × 10-3 ) and Janus kinase-signal transducers and activators of transcription (OR 35, p = 1.1 × 10-5 ), including genes, such as TNFAIP3, TYK2, and TNFRSF1A. Mendelian randomization found psoriasis as an exposure has a significant causal effect on MS (OR 1.04, p = 5.8 × 10-3 ), independent of type 1 diabetes (OR 1.05, p = 4.3 × 10-7 ), type 2 diabetes (OR 1.08, p = 2.3 × 10-3 ), inflammatory bowel disease (OR 1.11, p = 1.6 × 10-11 ), and vitamin D level (OR 0.75, p = 9.4 × 10-3 ). INTERPRETATION By investigating the shared genetics of psoriasis and MS, along with their modifiable risk factors, our findings will advance innovations in treatment for patients suffering from comorbidities. ANN NEUROL 2023;94:384-397.
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Affiliation(s)
- Matthew T. Patrick
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Rajan P. Nair
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Kevin He
- Department of Biostatistics, Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Philip E. Stuart
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Allison C. Billi
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Xiang Zhou
- Department of Biostatistics, Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Johann E. Gudjonsson
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Jorge R. Oksenberg
- Department of Neurology, University of California, San Francisco, California, United States of America
| | - James T. Elder
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Lam C. Tsoi
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Biostatistics, Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Computational Medicine & Bioinformatics, University of Michigan, Ann Arbor, Michigan, United States of America
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Carmona-Rivera C, Kaplan MJ. Low-density granulocytes in systemic autoimmunity and autoinflammation. Immunol Rev 2023; 314:313-325. [PMID: 36305174 PMCID: PMC10050110 DOI: 10.1111/imr.13161] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A body of evidence has re-energized the interest on the role neutrophils in inflammatory and autoimmune conditions. For decades, neutrophils have been considered a homogenous population. Nevertheless, accumulating evidence suggests that neutrophils are more versatile and heterogeneous than initially considered. The notion of neutrophil heterogeneity has been supported by the identification of low-density granulocytes (LDGs) in systemic lupus erythematosus (SLE) and other systemic autoimmune and autoinflammatory conditions. Transcriptomic, epigenetic, proteomic, and functional analyses support that LDGs are a distinct subset of proinflammatory neutrophils implicated in the pathogenesis of SLE and other autoimmune diseases. Importantly, it remains incompletely characterized whether LDGs detected in other inflammatory/autoimmune conditions display the same phenotype that those present in SLE. A shared feature of LDGs across diseases is their association with vascular damage, an important contributor to morbidity and mortality in chronic inflammatory conditions. Additionally, the lack of specific markers to identify LDGs in circulation or in tissue, makes it a challenge to elucidate their role in the pathogenesis of inflammatory and autoimmune conditions. In this review, we aim to examine the evidence on the biology and the putative pathogenic role of LDGs in systemic autoimmune diseases.
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Affiliation(s)
- Carmelo Carmona-Rivera
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Mariana J. Kaplan
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
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8
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Wu C, Jiang ML, Jiang R, Pang T, Zhang CJ. The roles of fungus in CNS autoimmune and neurodegeneration disorders. Front Immunol 2023; 13:1077335. [PMID: 36776399 PMCID: PMC9910218 DOI: 10.3389/fimmu.2022.1077335] [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: 10/22/2022] [Accepted: 12/30/2022] [Indexed: 01/28/2023] Open
Abstract
Fungal infection or proliferation in our body is capable of initiation of strong inflammation and immune responses that result in different consequences, including infection-trigged organ injury and inflammation-related remote organ dysfunction. Fungi associated infectious diseases have been well recognized in the clinic. However, whether fungi play an important role in non-infectious central nervous system disease is still to be elucidated. Recently, a growing amount of evidence point to a non-negligible role of peripheral fungus in triggering unique inflammation, immune response, and exacerbation of a range of non-infectious CNS disorders, including Multiple sclerosis, Neuromyelitis optica, Parkinson's disease, Alzheimer's disease, and Amyotrophic lateral sclerosis et al. In this review, we summarized the recent advances in recognizing patterns and inflammatory signaling of fungi in different subsets of immune cells, with a specific focus on its function in CNS autoimmune and neurodegeneration diseases. In conclusion, the fungus is capable of triggering unique inflammation by multiple mechanisms in the progression of a body of CNS non-infectious diseases, suggesting it serves as a key factor and critical novel target for the development of potential therapeutic strategies.
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Affiliation(s)
- Chuyu Wu
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China,State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Screening, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing, China
| | - Mei-Ling Jiang
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China,*Correspondence: Cun-Jin Zhang, ; Mei-Ling Jiang, ; Tao Pang,
| | - Runqui Jiang
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Tao Pang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Screening, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing, China,*Correspondence: Cun-Jin Zhang, ; Mei-Ling Jiang, ; Tao Pang,
| | - Cun-Jin Zhang
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China,Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University of Chinese Medicine, Nanjing University, Nanjing, Jiangsu, China,Institute of Brain Sciences, Institute of Brain Disorder Translational Medicine, Nanjing University, Nanjing, Jiangsu, China,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, China,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, China,*Correspondence: Cun-Jin Zhang, ; Mei-Ling Jiang, ; Tao Pang,
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9
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Wu GF. The cerebrospinal fluid immune cell landscape in animal models of multiple sclerosis. Front Mol Neurosci 2023; 16:1143498. [PMID: 37122618 PMCID: PMC10130411 DOI: 10.3389/fnmol.2023.1143498] [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: 01/13/2023] [Accepted: 02/15/2023] [Indexed: 05/02/2023] Open
Abstract
The fluid compartment surrounding the central nervous system (CNS) is a unique source of immune cells capable of reflecting the pathophysiology of neurologic diseases. While human clinical and experimental studies often employ cerebrospinal fluid (CSF) analysis, assessment of CSF in animal models of disease are wholly uncommon, particularly in examining the cellular component. Barriers to routine assessment of CSF in animal models of multiple sclerosis (MS) include limited sample volume, blood contamination, and lack of feasible longitudinal approaches. The few studies characterizing CSF immune cells in animal models of MS are largely outdated, but recent work employing transcriptomics have been used to explore new concepts in CNS inflammation and MS. Absence of extensive CSF data from rodent and other systems has curbed the overall impact of experimental models of MS. Future approaches, including examination of CSF myeloid subsets, single cell transcriptomics incorporating antigen receptor sequencing, and use of diverse animal models, may serve to overcome current limitations and provide critical insights into the pathogenesis of, and therapeutic developments for, MS.
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Affiliation(s)
- Gregory F. Wu
- Departments of Neurology and Pathology & Immunology, Washington University School of Medicine, St. Louis, MO, United States
- Neurology Service, VA St. Louis Health Care System, St. Louis, MO, United States
- *Correspondence: Gregory F. Wu,
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10
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Yang C, Feng Z, Deng H, Dai L, He L, Yin L, Zhao J. CXCL1/CXCR2 is involved in white matter injury in neonatal rats via the gut–brain axis. BMC Neurosci 2022; 23:67. [PMCID: PMC9675237 DOI: 10.1186/s12868-022-00749-1] [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: 12/14/2021] [Accepted: 10/27/2022] [Indexed: 11/21/2022] Open
Abstract
Background This study aimed to investigate whether CXCL1/CXCR2 mediates intestinal injury or white matter injury by delivering inflammatory mediators through the gut–brain regulation axis. Methods Neonatal SD rats, regardless of sex, were administered 3% dextran sulfate sodium via intragastric administration at different time points to construct necrotizing enterocolitis (NEC) models. Meanwhile, hypoxia and ischemia were induced in 3 day-old SD rats to construct hypoxic–ischemic brain injury (HIBI) and NEC + HIBI models, without gender discrimination. Hematoxylin–eosin staining was used to observe pathological changes in neonatal rat intestinal and brain tissues. Western blotting detected CXCL1 and CXCR2 expression in NEC, HIBI, and NEC + HIBI rat intestinal and brain tissues. Results Compared with normal rats, pathological damage to periventricular white matter was observed in the NEC group. In addition to the increased mortality, the histopathological scores also indicated significant increases in brain and intestinal tissue damage in both HIBI and NEC + HIBI rats. Western blotting results suggested that CXCL1 and CXCR2 expression levels were upregulated to varying degrees in the intestinal and brain tissues of NEC, HIBI, and NEC + HIBI neonatal rats compared to that in the normal group. Compared with the HIBI group, the expression of CXCL1 and CXCR2 continued to increase in NEC + HIBI rats at different time points. Conclusions CXCL1/CXCR2 may be involved in white matter injury in neonatal rats by delivering intestinal inflammatory mediators through the gut–brain axis. Supplementary Information The online version contains supplementary material available at 10.1186/s12868-022-00749-1. Pathologically impaired periventricular white matter was observed in NEC neonatal rats. Hypoxic-ischemic brain injury can also lead to intestinal inflammation. CXCL1 and CXCR2 were significantly upregulated in intestinal and brain tissues in NEC, HIBI, and NEC+HIBI rats compared to the normal group. Compared with the HIBI group, CXCL1 and CXCR2 expression continued to increase in NEC+HIBI rats.
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Affiliation(s)
- Can Yang
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Zhiyuan Feng
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Hong Deng
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Lu Dai
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Ling He
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Linlin Yin
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
| | - Jing Zhao
- grid.413387.a0000 0004 1758 177XDepartment of Neonatology, Affiliated Hospital of North Sichuan Medical College, No. 1 Maoyuan South Road, Shunqing District, Nanchong, 637000 Sichuan China
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11
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Fisher ES, Amarante MA, Lowry N, Lotz S, Farjood F, Temple S, Hill CE, Kiehl TR. Single cell profiling of CD45+ spinal cord cells reveals microglial and B cell heterogeneity and crosstalk following spinal cord injury. J Neuroinflammation 2022; 19:266. [PMCID: PMC9635187 DOI: 10.1186/s12974-022-02627-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
Abstract
Background
Immune cells play crucial roles after spinal cord injury (SCI). However, incomplete knowledge of immune contributions to injury and repair hinders development of SCI therapies. We leveraged single-cell observations to describe key populations of immune cells present in the spinal cord and changes in their transcriptional profiles from uninjured to subacute and chronic stages of SCI.
Methods
Deep-read single-cell sequencing was performed on CD45+ cells from spinal cords of uninjured and injured Swiss-webster mice. After T9 thoracic contusion, cells were collected 3-, 7-, and 60-day post-injury (dpi). Subpopulations of CD45+ immune cells were identified informatically, and their transcriptional responses characterized with time. We compared gene expression in spinal cord microglia and B cell subpopulations with those in published models of disease and injury. Microglia were compared with Disease Associated Microglia (DAM) and Injury Responsive Microglia (IRM). B cells were compared to developmental lineage states and to an Amyotrophic Lateral Sclerosis (ALS) model.
Results
In uninjured and 7 dpi spinal cord, most CD45+ cells isolated were microglia while chronically B cells predominated. B cells accumulating in the spinal cord following injury included immature B to mature stages and were predominantly found in the injury zone. We defined diverse subtypes of microglia and B cells with altered gene expression with time after SCI. Spinal cord microglia gene expression indicates differences from brain microglia at rest and in inflammatory states. Expression analysis of signaling ligand–receptor partners identified microglia–B cell interactions at acute and chronic stages that may be involved in B cell recruitment, retention, and formation of ectopic lymphoid follicles.
Conclusions
Immune cell responses to SCI have region-specific aspects and evolve with time. Developmentally diverse populations of B cells accumulate in the spinal cord following injury. Microglia at subacute stages express B cell recruitment factors, while chronically, they express factors predicted to reduce B cell inflammatory state. In the injured spinal cord, B cells create ectopic lymphoid structures, and express secreted factors potentially acting on microglia. Our study predicts previously unidentified crosstalk between microglia and B cells post-injury at acute and chronic stages, revealing new potential targets of inflammatory responses for SCI repair warranting future functional analyses.
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12
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Kee R, Naughton M, McDonnell GV, Howell OW, Fitzgerald DC. A Review of Compartmentalised Inflammation and Tertiary Lymphoid Structures in the Pathophysiology of Multiple Sclerosis. Biomedicines 2022; 10:biomedicines10102604. [PMID: 36289863 PMCID: PMC9599335 DOI: 10.3390/biomedicines10102604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/10/2022] [Indexed: 11/24/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic, immune-mediated, demyelinating disease of the central nervous system (CNS). The most common form of MS is a relapsing–remitting disease characterised by acute episodes of demyelination associated with the breakdown of the blood–brain barrier (BBB). In the relapsing–remitting phase there is often relative recovery (remission) from relapses characterised clinically by complete or partial resolution of neurological symptoms. In the later and progressive stages of the disease process, accrual of neurological disability occurs in a pathological process independent of acute episodes of demyelination and is accompanied by a trapped or compartmentalised inflammatory response, most notable in the connective tissue spaces of the vasculature and leptomeninges occurring behind an intact BBB. This review focuses on compartmentalised inflammation in MS and in particular, what we know about meningeal tertiary lymphoid structures (TLS; also called B cell follicles) which are organised clusters of immune cells, associated with more severe and progressive forms of MS. Meningeal inflammation and TLS could represent an important fluid or imaging marker of disease activity, whose therapeutic abrogation might be necessary to stop the most severe outcomes of disease.
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Affiliation(s)
- Rachael Kee
- Wellcome-Wolfson Institute for Experimental Medicine, Queen’s University Belfast, Belfast BT9 7BL, UK
- Department of Neurology, Royal Victoria Hospital, Belfast BT12 6BA, UK
- Correspondence:
| | - Michelle Naughton
- Wellcome-Wolfson Institute for Experimental Medicine, Queen’s University Belfast, Belfast BT9 7BL, UK
| | | | - Owain W. Howell
- Institute of Life Sciences, Swansea University, Wales SA2 8QA, UK
| | - Denise C. Fitzgerald
- Wellcome-Wolfson Institute for Experimental Medicine, Queen’s University Belfast, Belfast BT9 7BL, UK
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13
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Yi J, Miller AT, Archambault AS, Jones AJ, Bradstreet TR, Bandla S, Hsu YS, Edelson BT, Zhou YW, Fremont DH, Egawa T, Singh N, Wu GF, Hsieh CS. Antigen-specific depletion of CD4 + T cells by CAR T cells reveals distinct roles of higher- and lower-affinity TCRs during autoimmunity. Sci Immunol 2022; 7:eabo0777. [PMID: 36206355 PMCID: PMC9867937 DOI: 10.1126/sciimmunol.abo0777] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Both higher- and lower-affinity self-reactive CD4+ T cells are expanded in autoimmunity; however, their individual contribution to disease remains unclear. We addressed this question using peptide-MHCII chimeric antigen receptor (pMHCII-CAR) T cells to specifically deplete peptide-reactive T cells in mice. Integration of improvements in CAR engineering with TCR repertoire analysis was critical for interrogating in vivo the role of TCR affinity in autoimmunity. Our original MOG35-55 pMHCII-CAR, which targeted only higher-affinity TCRs, could prevent the induction of experimental autoimmune encephalomyelitis (EAE). However, pMHCII-CAR enhancements to pMHCII stability, as well as increased survivability via overexpression of a dominant-negative Fas, were required to target lower-affinity MOG-specific T cells and reverse ongoing clinical EAE. Thus, these data suggest a model in which higher-affinity autoreactive T cells are required to provide the "activation energy" for initiating neuroinflammatory injury, but lower-affinity cells are sufficient to maintain ongoing disease.
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Affiliation(s)
- Jaeu Yi
- Department of Internal Medicine, Division of Rheumatology, Washington University of Medicine, St. Louis, MO 63110, USA,Co-first authors
| | - Aidan T. Miller
- Department of Internal Medicine, Division of Rheumatology, Washington University of Medicine, St. Louis, MO 63110, USA,Co-first authors
| | - Angela S. Archambault
- Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Andrew J. Jones
- Department of Internal Medicine, Division of Rheumatology, Washington University of Medicine, St. Louis, MO 63110, USA
| | - Tara R. Bradstreet
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sravanthi Bandla
- Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Yu-Sung Hsu
- Division of Oncology, Section of Stem Cell Biology, Washington University School of Medicine, St. Louis, MO 63105, USA
| | - Brian T. Edelson
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - You W. Zhou
- Wugen Inc, 4340 Duncan Ave, St Louis MO 63110, USA
| | - Daved H. Fremont
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Takeshi Egawa
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nathan Singh
- Division of Oncology, Section of Stem Cell Biology, Washington University School of Medicine, St. Louis, MO 63105, USA
| | - Gregory F. Wu
- Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, USA,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA,Correspondence: and
| | - Chyi-Song Hsieh
- Department of Internal Medicine, Division of Rheumatology, Washington University of Medicine, St. Louis, MO 63110, USA,Correspondence: and
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14
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Korf JM, Honarpisheh P, Mohan EC, Banerjee A, Blasco-Conesa MP, Honarpisheh P, Guzman GU, Khan R, Ganesh BP, Hazen AL, Lee J, Kumar A, McCullough LD, Chauhan A. CD11b high B Cells Increase after Stroke and Regulate Microglia. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:288-300. [PMID: 35732342 PMCID: PMC9446461 DOI: 10.4049/jimmunol.2100884] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 04/22/2022] [Indexed: 06/02/2023]
Abstract
Recent studies have highlighted the deleterious contributions of B cells to post-stroke recovery and cognitive decline. Different B cell subsets have been proposed on the basis of expression levels of transcription factors (e.g., T-bet) as well as specific surface proteins. CD11b (α-chain of integrin) is expressed by several immune cell types and is involved in regulation of cell motility, phagocytosis, and other essential functions of host immunity. Although B cells express CD11b, the CD11bhigh subset of B cells has not been well characterized, especially in immune dysregulation seen with aging and after stroke. Here, we investigate the role of CD11bhigh B cells in immune responses after stroke in young and aged mice. We evaluated the ability of CD11bhigh B cells to influence pro- and anti-inflammatory phenotypes of young and aged microglia (MG). We hypothesized that CD11bhigh B cells accumulate in the brain and contribute to neuroinflammation in aging and after stroke. We found that CD11bhigh B cells are a heterogeneous subpopulation of B cells predominantly present in naive aged mice. Their frequency increases in the brain after stroke in young and aged mice. Importantly, CD11bhigh B cells regulate MG phenotype and increase MG phagocytosis in both ex vivo and in vivo settings, likely by production of regulatory cytokines (e.g., TNF-α). As both APCs and adaptive immune cells with long-term memory function, B cells are uniquely positioned to regulate acute and chronic phases of the post-stroke immune response, and their influence is subset specific.
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Affiliation(s)
- Janelle M Korf
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | - Pedram Honarpisheh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | - Eric C Mohan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Anik Banerjee
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | | | - Parisa Honarpisheh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Gary U Guzman
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Romeesa Khan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Bhanu P Ganesh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Amy L Hazen
- University of Texas McGovern Medical School, Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, Houston, TX
| | - Juneyoung Lee
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Aditya Kumar
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Louise D McCullough
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Anjali Chauhan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX;
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15
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Chen Z, Liu P, Xia X, Wang L, Li X. Living on the border of the CNS: Dural immune cells in health and disease. Cell Immunol 2022; 377:104545. [DOI: 10.1016/j.cellimm.2022.104545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/26/2022] [Accepted: 05/09/2022] [Indexed: 12/31/2022]
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16
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Breaching Brain Barriers: B Cell Migration in Multiple Sclerosis. Biomolecules 2022; 12:biom12060800. [PMID: 35740925 PMCID: PMC9221446 DOI: 10.3390/biom12060800] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 12/25/2022] Open
Abstract
Multiple sclerosis (MS) is an inflammatory disease of the central nervous system (CNS) known for the manifestation of demyelinated lesions throughout the CNS, leading to neurodegeneration. To date, not all pathological mechanisms that drive disease progression are known, but the clinical benefits of anti-CD20 therapies have put B cells in the spotlight of MS research. Besides their pathological effects in the periphery in MS, B cells gain access to the CNS where they can contribute to disease pathogenesis. Specifically, B cells accumulate in perivascular infiltrates in the brain parenchyma and the subarachnoid spaces of the meninges, but are virtually absent from the choroid plexus. Hence, the possible migration of B cells over the blood-brain-, blood-meningeal-, and blood-cerebrospinal fluid (CSF) barriers appears to be a crucial step to understanding B cell-mediated pathology. To gain more insight into the molecular mechanisms that regulate B cell trafficking into the brain, we here provide a comprehensive overview of the different CNS barriers in health and in MS and how they translate into different routes for B cell migration. In addition, we review the mechanisms of action of diverse therapies that deplete peripheral B cells and/or block B cell migration into the CNS. Importantly, this review shows that studying the different routes of how B cells enter the inflamed CNS should be the next step to understanding this disease.
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17
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Meningeal Lymphatics: An Immune Gateway for the Central Nervous System. Cells 2021; 10:cells10123385. [PMID: 34943894 PMCID: PMC8699870 DOI: 10.3390/cells10123385] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 01/30/2023] Open
Abstract
The recent (re)discovery of the meningeal lymphatic system has opened new theories as to how immune cells traffic and interact with the central nervous system (CNS). While evidence is accumulating on the contribution of the meningeal lymphatic system in both homeostatic and disease conditions, a lot remains unknown about the mechanisms that allow for interaction between the meningeal lymphatic system and immune cells. In this review, we synthesize the knowledge about the lymphatic immune interaction in the CNS and highlight the important questions that remain to be answered.
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18
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Current Understanding of the Neutrophil Transcriptome in Health and Disease. Cells 2021; 10:cells10092406. [PMID: 34572056 PMCID: PMC8469435 DOI: 10.3390/cells10092406] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 12/23/2022] Open
Abstract
Neutrophils are key cells of the innate immune system. It is now understood that this leukocyte population is diverse in both the basal composition and functional plasticity. Underlying this plasticity is a post-translational framework for rapidly achieving early activation states, but also a transcriptional capacity that is becoming increasingly recognized by immunologists. Growing interest in the contribution of neutrophils to health and disease has resulted in more efforts to describe their transcriptional activity. Whilst initial efforts focused predominantly on understanding the existing biology, investigations with advanced methods such as single cell RNA sequencing to understand interactions of the entire immune system are revealing higher flexibility in neutrophil transcription than previously thought possible and multiple transition states. It is now apparent that neutrophils utilise many forms of RNA in the regulation of their function. This review collates current knowledge on the nuclei structure and gene expression activity of human neutrophils across homeostasis and disease, before highlighting knowledge gaps that are research priority areas.
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19
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Bcl6 controls meningeal Th17-B cell interaction in murine neuroinflammation. Proc Natl Acad Sci U S A 2021; 118:2023174118. [PMID: 34479995 PMCID: PMC8433502 DOI: 10.1073/pnas.2023174118] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022] Open
Abstract
The meninges protect the central nervous system but also host lymphocytes in neuroinflammation. In human multiple sclerosis, preferentially B cells accumulate in the meninges. By generating a compartment-specific transcriptional map of meningeal versus parenchymal leukocytes in experimental neuroinflammation, we found a follicular phenotype of meningeal B cells and a corresponding follicular helper-like phenotype in meningeal Th17 cells. The meninges thus instructed a site-specific local phenotype to proinflammatory autoreactive T cells. We identified the transcription factor Bcl6 in Th17 cells to promote interactions with meningeal B cells, isotype-switching, and B cell-supporting chemokines. This may describe a mechanism controlling meningeal autoimmunity and helps understanding how the meninges, as a recently recognized immunologically active site, contribute to autoimmune tissue damage in multiple sclerosis. Ectopic lymphoid tissue containing B cells forms in the meninges at late stages of human multiple sclerosis (MS) and when neuroinflammation is induced by interleukin (IL)-17 producing T helper (Th17) cells in rodents. B cell differentiation and the subsequent release of class-switched immunoglobulins have been speculated to occur in the meninges, but the exact cellular composition and underlying mechanisms of meningeal-dominated inflammation remain unknown. Here, we performed in-depth characterization of meningeal versus parenchymal Th17-induced rodent neuroinflammation. The most pronounced cellular and transcriptional differences between these compartments was the localization of B cells exhibiting a follicular phenotype exclusively to the meninges. Correspondingly, meningeal but not parenchymal Th17 cells acquired a B cell–supporting phenotype and resided in close contact with B cells. This preferential B cell tropism for the meninges and the formation of meningeal ectopic lymphoid tissue was partially dependent on the expression of the transcription factor Bcl6 in Th17 cells that is required in other T cell lineages to induce isotype class switching in B cells. A function of Bcl6 in Th17 cells was only detected in vivo and was reflected by the induction of B cell–supporting cytokines, the appearance of follicular B cells in the meninges, and of immunoglobulin class switching in the cerebrospinal fluid. We thus identify the induction of a B cell–supporting meningeal microenvironment by Bcl6 in Th17 cells as a mechanism controlling compartment specificity in neuroinflammation.
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20
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Single-cell profiling of CNS border compartment leukocytes reveals that B cells and their progenitors reside in non-diseased meninges. Nat Neurosci 2021; 24:1225-1234. [PMID: 34253922 DOI: 10.1038/s41593-021-00880-y] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/27/2021] [Indexed: 02/06/2023]
Abstract
The CNS is ensheathed by the meninges and cerebrospinal fluid, and recent findings suggest that these CNS-associated border tissues have complex immunological functions. Unlike myeloid lineage cells, lymphocytes in border compartments have yet to be thoroughly characterized. Based on single-cell transcriptomics, we here identified a highly location-specific composition and expression profile of tissue-resident leukocytes in CNS parenchyma, pia-enriched subdural meninges, dura mater, choroid plexus and cerebrospinal fluid. The dura layer of the meninges contained a large population of B cells under homeostatic conditions in mice and rats. Murine dura B cells exhibited slow turnover and long-term tissue residency, and they matured in experimental neuroinflammation. The dura also contained B lineage progenitors at the pro-B cell stage typically not found outside of bone marrow, without direct influx from the periphery or the skull bone marrow. This identified the dura as an unexpected site of B cell residence and potentially of development in both homeostasis and neuroinflammation.
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21
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DiSano KD, Gilli F, Pachner AR. Memory B Cells in Multiple Sclerosis: Emerging Players in Disease Pathogenesis. Front Immunol 2021; 12:676686. [PMID: 34168647 PMCID: PMC8217754 DOI: 10.3389/fimmu.2021.676686] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/11/2021] [Indexed: 11/25/2022] Open
Abstract
Multiple Sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. Once thought to be primarily driven by T cells, B cells are emerging as central players in MS immunopathogenesis. Interest in multiple B cell phenotypes in MS expanded following the efficacy of B cell-depleting agents targeting CD20 in relapsing-remitting MS and inflammatory primary progressive MS patients. Interestingly, these therapies primarily target non-antibody secreting cells. Emerging studies seek to explore B cell functions beyond antibody-mediated roles, including cytokine production, antigen presentation, and ectopic follicle-like aggregate formation. Importantly, memory B cells (Bmem) are rising as a key B cell phenotype to investigate in MS due to their antigen-experience, increased lifespan, and rapid response to stimulation. Bmem display diverse effector functions including cytokine production, antigen presentation, and serving as antigen-experienced precursors to antibody-secreting cells. In this review, we explore the cellular and molecular processes involved in Bmem development, Bmem phenotypes, and effector functions. We then examine how these concepts may be applied to the potential role(s) of Bmem in MS pathogenesis. We investigate Bmem both within the periphery and inside the CNS compartment, focusing on Bmem phenotypes and proposed functions in MS and its animal models. Finally, we review how current immunomodulatory therapies, including B cell-directed therapies and other immunomodulatory therapies, modify Bmem and how this knowledge may be harnessed to direct therapeutic strategies in MS.
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Affiliation(s)
- Krista D. DiSano
- Department of Neurology, Geisel School of Medicine & Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States
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22
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Brand RM, Friedrich V, Diddens J, Pfaller M, Romana de Franchis F, Radbruch H, Hemmer B, Steiger K, Lehmann-Horn K. Anti-CD20 Depletes Meningeal B Cells but Does Not Halt the Formation of Meningeal Ectopic Lymphoid Tissue. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2021; 8:8/4/e1012. [PMID: 34021057 PMCID: PMC8143698 DOI: 10.1212/nxi.0000000000001012] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/08/2021] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To investigate whether anti-CD20 B-cell-depleting monoclonal antibodies (ɑCD20 mAbs) inhibit the formation or retention of meningeal ectopic lymphoid tissue (mELT) in a murine model of multiple sclerosis (MS). METHODS We used a spontaneous chronic experimental autoimmune encephalomyelitis (EAE) model of mice with mutant T-cell and B-cell receptors specific for myelin oligodendrocyte glycoprotein (MOG), which develop meningeal inflammatory infiltrates resembling those described in MS. ɑCD20 mAbs were administered in either a preventive or a treatment regimen. The extent and cellular composition of mELT was assessed by histology and immunohistochemistry. RESULTS ɑCD20 mAb, applied in a paradigm to either prevent or treat EAE, did not alter the disease course in either condition. However, ɑCD20 mAb depleted virtually all B cells from the meningeal compartment but failed to prevent the formation of mELT altogether. Because of the absence of B cells, mELT was less densely populated with immune cells and the cellular composition was changed, with increased neutrophil granulocytes. CONCLUSIONS These results demonstrate that, in CNS autoimmune disease, meningeal inflammatory infiltrates may form and persist in the absence of B cells. Together with the finding that ɑCD20 mAb does not ameliorate spontaneous chronic EAE with mELT, our data suggest that mELT may have yet unknown capacities that are independent of B cells and contribute to CNS autoimmunity.
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Affiliation(s)
- Rosa Margareta Brand
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Verena Friedrich
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Jolien Diddens
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Monika Pfaller
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Francesca Romana de Franchis
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Helena Radbruch
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Bernhard Hemmer
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Katja Steiger
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany
| | - Klaus Lehmann-Horn
- From the Department of Neurology (R.M.B., V.F., J.D., M.P., F.R.F., K.L.-H.), School of Medicine, Technical University of Munich; Department of Neuropathology (H.R.), Charité - Universitätsmedizin Berlin; Department of Neurology (B.H.), School of Medicine, Technical University of Munich, Munich Cluster of Systems Neurology (SyNergy), Germany; and Comparative Experimental Pathology (CEP) (K.S.), Department of Pathology, School of Medicine, Technical University of Munich, Germany.
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Bhargava P, Kim S, Reyes AA, Grenningloh R, Boschert U, Absinta M, Pardo C, Van Zijl P, Zhang J, Calabresi PA. Imaging meningeal inflammation in CNS autoimmunity identifies a therapeutic role for BTK inhibition. Brain 2021; 144:1396-1408. [PMID: 33724342 DOI: 10.1093/brain/awab045] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 11/17/2020] [Accepted: 12/03/2020] [Indexed: 02/06/2023] Open
Abstract
Leptomeningeal inflammation in multiple sclerosis is associated with worse clinical outcomes and greater cortical pathology. Despite progress in identifying this process in multiple sclerosis patients using post-contrast fluid-attenuated inversion recovery imaging, early trials attempting to target meningeal inflammation have been unsuccessful. There is a lack of appropriate model systems to screen potential therapeutic agents targeting meningeal inflammation. We utilized ultra-high field (11.7 T) MRI to perform post-contrast imaging in SJL/J mice with experimental autoimmune encephalomyelitis induced via immunization with proteolipid protein peptide (PLP139-151) and complete Freund's adjuvant. Imaging was performed in both a cross-sectional and longitudinal fashion at time points ranging from 2 to 14 weeks post-immunization. Following imaging, we euthanized animals and collected tissue for pathological evaluation, which revealed dense cellular infiltrates corresponding to areas of contrast enhancement involving the leptomeninges. These areas of meningeal inflammation contained B cells (B220+), T cells (CD3+) and myeloid cells (Mac2+). We also noted features consistent with tertiary lymphoid tissue within these areas, namely the presence of peripheral node addressin-positive structures, C-X-C motif chemokine ligand-13 (CXCL13)-producing cells and FDC-M1+ follicular dendritic cells. In the cortex adjacent to areas of meningeal inflammation we identified astrocytosis, microgliosis, demyelination and evidence of axonal stress/damage. Since areas of meningeal contrast enhancement persisted over several weeks in longitudinal experiments, we utilized this model to test the effects of a therapeutic intervention on established meningeal inflammation. We randomized mice with evidence of meningeal contrast enhancement on MRI scans performed at 6 weeks post-immunization, to treatment with either vehicle or evobrutinib [a Bruton tyrosine kinase (BTK) inhibitor] for a period of 4 weeks. These mice underwent serial imaging; we examined the effect of treatment on the areas of meningeal contrast enhancement and noted a significant reduction in the evobrutinib group compared to vehicle (30% reduction versus 5% increase; P = 0.003). We used ultra-high field MRI to identify areas of meningeal inflammation and to track them over time in SJL/J mice with experimental autoimmune encephalomyelitis, and then used this model to identify BTK inhibition as a novel therapeutic approach to target meningeal inflammation. The results of this study provide support for future studies in multiple sclerosis patients with imaging evidence of meningeal inflammation.
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Affiliation(s)
- Pavan Bhargava
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sol Kim
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Arthur A Reyes
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | | | - Martina Absinta
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Carlos Pardo
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Peter Van Zijl
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Jiangyang Zhang
- Department of Radiology, New York University, New York, NY, USA
| | - Peter A Calabresi
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Jurberg AD, Chaves B, Pinho LG, da Silva JHM, Savino W, Cotta-de-Almeida V. VLA-4 as a Central Target for Modulating Neuroinflammatory Disorders. Neuroimmunomodulation 2021; 28:213-221. [PMID: 34515173 DOI: 10.1159/000518721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 07/22/2021] [Indexed: 11/19/2022] Open
Abstract
The complex steps leading to the central nervous system (CNS) inflammation and the progress to neuroinflammatory and neurodegenerative disorders have opened up new research and intervention avenues. This review focuses on the therapeutic targeting of the VLA-4 integrin to discuss the clear-cut effect on immune cell trafficking into brain tissues. Besides, we explore the possibility that blocking VLA-4 may have a relevant impact on nonmigratory activities of immune cells, such as antigen presentation and T-cell differentiation, during the neuroinflammatory process. Lastly, the recent refinement of computational techniques is highlighted as a way to increase specificity and to reduce the detrimental side effects of VLA-4 immunotherapies aiming at developing better clinical interventions.
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Affiliation(s)
- Arnon Dias Jurberg
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation (RENEURIN), Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- School of Medicine, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Beatriz Chaves
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Computational Modeling Group, Oswaldo Cruz Foundation (Fiocruz), Eusébio, Brazil
| | - Lia Gonçalves Pinho
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation (RENEURIN), Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - João Hermínio Martins da Silva
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Computational Modeling Group, Oswaldo Cruz Foundation (Fiocruz), Eusébio, Brazil
| | - Wilson Savino
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation (RENEURIN), Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Vinicius Cotta-de-Almeida
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation (RENEURIN), Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- School of Medicine, Estácio de Sá University, Rio de Janeiro, Brazil
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25
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De Bondt M, Hellings N, Opdenakker G, Struyf S. Neutrophils: Underestimated Players in the Pathogenesis of Multiple Sclerosis (MS). Int J Mol Sci 2020; 21:E4558. [PMID: 32604901 PMCID: PMC7349048 DOI: 10.3390/ijms21124558] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 01/06/2023] Open
Abstract
Neutrophils are the most abundant circulating and first-responding innate myeloid cells and have so far been underestimated in the context of multiple sclerosis (MS). MS is the most frequent, immune-mediated, inflammatory disease of the central nervous system. MS is treatable but not curable and its cause(s) and pathogenesis remain elusive. The involvement of neutrophils in MS pathogenesis has been suggested by the use of preclinical animal disease models, as well as on the basis of patient sample analysis. In this review, we provide an overview of the possible mechanisms and functions by which neutrophils may contribute to the development and pathology of MS. Neutrophils display a broad variety of effector functions enabling disease pathogenesis, including (1) the release of inflammatory mediators and enzymes, such as interleukin-1β, myeloperoxidase and various proteinases, (2) destruction and phagocytosis of myelin (as debris), (3) release of neutrophil extracellular traps, (4) production of reactive oxygen species, (5) breakdown of the blood-brain barrier and (6) generation and presentation of autoantigens. An important question relates to the issue of whether neutrophils exhibit a predominantly proinflammatory function or are also implicated in the resolution of chronic inflammatory responses in MS.
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Affiliation(s)
- Mirre De Bondt
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Herestraat 49—Box 1042, 3000 Leuven, Belgium;
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Martelarenlaan 42, 3500 Hasselt, Belgium;
| | - Niels Hellings
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Martelarenlaan 42, 3500 Hasselt, Belgium;
| | - Ghislain Opdenakker
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Herestraat 49—Box 1044, 3000 Leuven, Belgium;
| | - Sofie Struyf
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Herestraat 49—Box 1042, 3000 Leuven, Belgium;
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VLA-4 Expression and Activation in B Cell Malignancies: Functional and Clinical Aspects. Int J Mol Sci 2020; 21:ijms21062206. [PMID: 32210016 PMCID: PMC7139737 DOI: 10.3390/ijms21062206] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/18/2020] [Accepted: 03/20/2020] [Indexed: 12/16/2022] Open
Abstract
Lineage commitment and differentiation of hematopoietic cells takes place in well-defined microenvironmental surroundings. Communication with other cell types is a vital prerequisite for the normal functions of the immune system, while disturbances in this communication support the development and progression of neoplastic disease. Integrins such as the integrin very late antigen-4 (VLA-4; CD49d/CD29) control the localization of healthy as well as malignant B cells within the tissue, and thus determine the patterns of organ infiltration. Malignant B cells retain some key characteristics of their normal counterparts, with B cell receptor (BCR) signaling and integrin-mediated adhesion being essential mediators of tumor cell homing, survival and proliferation. It is thus not surprising that targeting the BCR pathway using small molecule inhibitors has proved highly effective in the treatment of B cell malignancies. Attenuation of BCR-dependent lymphoma–microenvironment interactions was, in this regard, described as a main mechanism critically contributing to the efficacy of these agents. Here, we review the contribution of VLA-4 to normal B cell differentiation on the one hand, and to the pathophysiology of B cell malignancies on the other hand. We describe its impact as a prognostic marker, its interplay with BCR signaling and its predictive role for novel BCR-targeting therapies, in chronic lymphocytic leukemia and beyond.
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