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Zhang J, Chang L, Sun Y, Qin M, Wang X, Guo Y. Disabled-2 (DAB2) overexpression mediates immune suppression in systemic lupus erythematosus by modulating Treg/Th17 cell differentiation. Clin Exp Pharmacol Physiol 2022; 49:596-607. [PMID: 35108421 DOI: 10.1111/1440-1681.13630] [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: 07/28/2021] [Revised: 12/27/2021] [Accepted: 01/25/2022] [Indexed: 10/19/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disorder. T helper 17 (Th17) and regulatory T (Treg) cells play key roles in SLE progression. Disabled-2 (DAB2) exhibits immunomodulatory effects in inflammatory diseases. However, the role of DAB2 in SLE and the precise mechanisms remain unknown. Herein, a decreased DAB2 expression and an increased miR-448-3p level were observed in PBMCs from SLE patients. DAB2 level was negatively correlated with SLE Disease Activity Index (SLEDAI), suggesting a functional correlation between DAB2 and SLE. To test this, we employed 8-week-old MRL/lpr mice and treated them with lentivirus-mediated DAB2 or its negative control (LV-NC). LV-DAB2 treatment increased DAB2 expression and reduced serum IgG and anti-dsDNA IgG levels. DAB2 up-regulation alleviated splenomegaly and lymphadenopathy and SLE-related organ damage. Moreover, DAB2 enhanced the percentage of CD25+ Foxp3+ Treg cells but reduced Th17 cell frequency in lupus, along with the reduction in TNF-α, IL-6 and IL-17A levels, and the elevation in IL-10. In vitro, naive CD4+ T cells isolated from MRL/lpr mice were polarized into Th17 or Treg phenotypes and treated with lentivirus. LV-DAB2 treatment down-regulated IL-17A expression and inhibited the generation of CD4+ IL-17A+ Th17 cells. Also, DAB2 triggered the production of IL-10 and the activation of Treg cells. Furthermore, DAB2 was verified as a direct target for miR-448-3p. MiR-448-3p overexpression canceled the promoting effect of DAB2 on Treg cell differentiation. Taken together, DAB2 exerts an immunosuppressive effect on SLE through promoting Treg cell activation and inhibiting Th17 cell differentiation, which may be modulated by miR-448-3p.
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Affiliation(s)
- Jing Zhang
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
| | - Lihua Chang
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
| | - Yue Sun
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
| | - Muting Qin
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
| | - Xiaofei Wang
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
| | - Yun Guo
- Department of Immunology and Rheumatology, Shengjing Hospital of China Medical University, Shenyang, 110022, Liaoning, People's Republic of China
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Figliuolo da Paz V, Ghishan FK, Kiela PR. Emerging Roles of Disabled Homolog 2 (DAB2) in Immune Regulation. Front Immunol 2020; 11:580302. [PMID: 33178208 PMCID: PMC7593574 DOI: 10.3389/fimmu.2020.580302] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 09/24/2020] [Indexed: 12/24/2022] Open
Abstract
Disabled-2 (DAB2) is a clathrin and cargo binding endocytic adaptor protein recognized for its multifaceted roles in signaling pathways involved in cellular differentiation, proliferation, migration, tumor suppression, and other fundamental homeostatic cellular mechanisms. The requirement for DAB2 in the canonical TGFβ signaling in fibroblasts suggested that a similar mechanism may exist in immune cells and that DAB2 may contribute to immunological tolerance and suppression of inflammatory responses. In this review, we synthesize the current state of knowledge on the roles of DAB2 in the cells of the innate and adaptive immune system, with particular focus on antigen presenting cells (APCs; macrophages and dendritic cells) and regulatory T cells (Tregs). The emerging role of DAB2 in the immune system is that of an immunoregulatory molecule with significant roles in Treg-mediated immunosuppression, and suppression of TLR signaling in APC. DAB2 itself is downregulated by inflammatory stimuli, an event that likely contributes to the immunogenic function of APC. However, contrary findings have been described in neuroinflammatory disorders, thus suggesting a highly context-specific roles for DAB2 in immune cell regulation. There is need for better understanding of DAB2 regulation and its roles in different immune cells, their specialized sub-populations, and their responses under specific inflammatory conditions.
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Affiliation(s)
| | - Fayez K Ghishan
- Department of Pediatrics, University of Arizona, Tucson, AZ, United States
| | - Pawel R Kiela
- Department of Pediatrics, University of Arizona, Tucson, AZ, United States.,Department of Immunobiology, University of Arizona, Tucson, AZ, United States
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Ogbu SC, Musich PR, Zhang J, Yao ZQ, Howe PH, Jiang Y. The role of disabled-2 (Dab2) in diseases. Gene 2020; 769:145202. [PMID: 33059028 DOI: 10.1016/j.gene.2020.145202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/16/2020] [Accepted: 09/29/2020] [Indexed: 12/16/2022]
Abstract
Disabled-2 (Dab2/DOC-2) is a mitogen-responsive adaptor protein required for multiple cellular functions. It is involved in many signaling pathways and plays an integral role in vesicular uptake and trafficking, modulating immune function, protein-protein interactions, cellular homeostasis and differentiation, oncogenesis, and inflammatory processes in organ systems. It contains domains for binding to NPXY motif-containing and SH3 domain-containing adapter proteins, phosphoinositides, glycoprotein 100 (gp100, or megalin), integrins, clathrin, and myosin VI. However, the molecular mechanism(s) of Dab2's biological function still remain to be elucidated. In this review, we provide an extensive up-to-date understanding of the function of Dab2 and its regulation in cardiovascular diseases, immune disorders, tumorigenesis, and central nervous system disorders.
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Affiliation(s)
- Stella C Ogbu
- Department of Biomedical Sciences, J. H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Phillip R Musich
- Department of Biomedical Sciences, J. H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Jinyu Zhang
- Department of Biomedical Sciences, J. H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA; Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, ETSU, Johnson City, TN 37614, USA
| | - Zhi Q Yao
- Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, ETSU, Johnson City, TN 37614, USA
| | - Philip H Howe
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Yong Jiang
- Department of Biomedical Sciences, J. H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
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Yi S, Chang R, Hu J, Qiu Y, Wang Q, Cao Q, Yuan G, Su G, Zhou C, Wang Y, Kijlstra A, Yang P. Disabled-2 (DAB2) Overexpression Inhibits Monocyte-Derived Dendritic Cells' Function in Vogt-Koyanagi-Harada Disease. Invest Ophthalmol Vis Sci 2019; 59:4662-4669. [PMID: 30267088 DOI: 10.1167/iovs.18-24630] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Purpose Recent studies reported that the tumor suppressor disabled-2 (DAB2) is a negative regulator of immune function. In this study, we investigated the role of DAB2 in monocyte-derived dendritic cells (DCs) from Vogt-Koyanagi-Harada disease (VKH) patients. Methods The mRNA and protein levels of DAB2 were quantified by quantitative real-time PCR and Western blot. The Sequenom MassARRAY system was used to detect the promoter methylation level. An adenovirus carrying the DAB2 gene was transduced into immature DCs, isolated, and induced from active VKH patients. The surface markers of DCs, the frequency of T helper (Th) type 1 (Th1) and Th17 cells in CD4+T cells, which were cocultured with DCs, were tested by flow cytometry. ELISA was used to analyze the inflammatory cytokines produced by DC and CD4+T cell cocultures. Results The mRNA and protein expression levels of DAB2 in DCs obtained from active VKH patients were decreased, while the DAB2 promoter methylation level was marginally increased when compared with inactive VKH patients and normal controls. The expression of CD86 on DCs was significantly downregulated by DAB2 overexpression. The DC-related inflammatory factors IL-6 and TNF-α were also decreased. The frequency of Th1 and Th17 cells and their related cytokines were reduced significantly after coculture with DAB2 overexpressing DCs. DAB2 overexpression did not affect autophagy in DCs from VKH patients. Conclusions These results suggest that the decreased expression of DAB2 in DCs plays a role in the pathogenesis of VKH disease. DAB2 overexpression inhibits DC function, but this is not mediated via autophagy.
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Affiliation(s)
- Shenglan Yi
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Rui Chang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Jianping Hu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Yiguo Qiu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Qingfeng Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Qingfeng Cao
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Gangxiang Yuan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Guannan Su
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Chunjiang Zhou
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Yao Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Aize Kijlstra
- University Eye Clinic Maastricht, Maastricht, The Netherlands
| | - Peizeng Yang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, People's Republic of China
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Tao W, Moore R, Smith ER, Xu XX. Endocytosis and Physiology: Insights from Disabled-2 Deficient Mice. Front Cell Dev Biol 2016; 4:129. [PMID: 27933291 PMCID: PMC5122593 DOI: 10.3389/fcell.2016.00129] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/27/2016] [Indexed: 01/29/2023] Open
Abstract
Disabled-2 (Dab2) is a clathrin and cargo binding endocytic adaptor protein, and cell biology studies revealed that Dab2 plays a role in cellular trafficking of a number of transmembrane receptors and signaling proteins. A PTB/PID domain located in the N-terminus of Dab2 binds the NPXY motif(s) present at the cytoplasmic tails of certain transmembrane proteins/receptors. The membrane receptors reported to bind directly to Dab2 include LDL receptor and its family members LRP1 and LRP2 (megalin), growth factor receptors EGFR and FGFR, and the cell adhesion receptor beta1 integrin. Dab2 also serves as an adaptor in signaling pathways. Particularly, Dab2 facilitates the endocytosis of the Ras activating Grb2/Sos1 signaling complex, controls its disassembly, and thereby regulates the Ras/MAPK signaling pathway. Cellular analyses have suggested several diverse functions for the widely expressed proteins, and Dab2 is also considered a tumor suppressor, as loss or reduced expression is found in several cancer types. Dab2 null mutant mice were generated and investigated to determine if the findings from cellular studies might be important and relevant in intact animals. Dab2 conditional knockout mice mediated through a Sox2-Cre transgene have no obvious developmental defects and have a normal life span despite that the Dab2 protein is essentially absent in the mutant mice. The conditional knockout mice were grossly normal, though more recent investigation of the Dab2-deficient mice revealed several phenotypes, which can be accounted for by several previously suggested mechanisms. The studies of mutant mice established that Dab2 plays multiple physiological roles through its endocytic functions and modulation of signal pathways.
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Affiliation(s)
- Wensi Tao
- Sylvester Comprehensive Cancer Center and Department of Cell Biology, Graduate Program in Cell and Developmental Biology, University of Miami School of Medicine Miami, FL, USA
| | - Robert Moore
- Sylvester Comprehensive Cancer Center and Department of Cell Biology, Graduate Program in Cell and Developmental Biology, University of Miami School of Medicine Miami, FL, USA
| | - Elizabeth R Smith
- Sylvester Comprehensive Cancer Center and Department of Cell Biology, Graduate Program in Cell and Developmental Biology, University of Miami School of Medicine Miami, FL, USA
| | - Xiang-Xi Xu
- Sylvester Comprehensive Cancer Center and Department of Cell Biology, Graduate Program in Cell and Developmental Biology, University of Miami School of Medicine Miami, FL, USA
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Lee YE, An J, Lee KH, Kim SS, Song HJ, Pyeon H, Nam H, Kang K, Joo KM. The Synergistic Local Immunosuppressive Effects of Neural Stem Cells Expressing Indoleamine 2,3-Dioxygenase (IDO) in an Experimental Autoimmune Encephalomyelitis (EAE) Animal Model. PLoS One 2015; 10:e0144298. [PMID: 26636969 PMCID: PMC4670164 DOI: 10.1371/journal.pone.0144298] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/16/2015] [Indexed: 01/19/2023] Open
Abstract
Neurodegenerative diseases provoke robust immunological reactions in the central nervous system (CNS), which further deteriorate the neural tissue damage. We hypothesized that the expression levels of indoleamine 2,3-dioxygenase (IDO), an enzyme that has potent immune suppressive activities, in neural stem cells (NSCs) would have synergistic therapeutic effects against neurodegenerative diseases, since NSCs themselves have low IDO expression. In this study, the synergistic immune suppressive effects of rat fetal NSCs expressing IDO (rfNSCs-IDO) were validated by mixed leukocyte reaction (MLR) in vitro and an experimental autoimmune encephalomyelitis (EAE) animal model in vivo. rfNSCs-IDO showed significantly more suppressive effects on T cell proliferation in the MLR compared to control rfNSCs (rfNSCs-Cont). Importantly, IDO inhibition using 1-methyl-DL-tryptophan (1-MT), an IDO inhibitor, reversed the synergistic effects, confirming IDO-specific effects in rfNSCs-IDO. In the EAE animal model, systemic rfNSCs-IDO injections resulted in significant local immune suppression in the cervical lymph nodes and CNS, evidenced by a reduction in the number of activated T lymphocytes and an increase in regulatory T cell numbers, which induced significantly fewer clinical symptoms and faster recovery. In contrast, rfNSCs-Cont failed to reduce symptoms in the EAE animal models, although they showed local immune suppression, which was significantly less than that in rfNSCs-IDO. Taken together, IDO expression in NSCs synergistically potentiates the immune suppression activities of NSCs and could be applicable for the development of therapeutic modalities against various neurodegenerative diseases.
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MESH Headings
- Animals
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Encephalomyelitis, Autoimmune, Experimental/therapy
- Female
- Gene Expression Regulation, Enzymologic/immunology
- Immune Tolerance
- Indoleamine-Pyrrole 2,3,-Dioxygenase/immunology
- Neural Stem Cells/immunology
- Neural Stem Cells/transplantation
- Rats
- Rats, Sprague-Dawley
- Stem Cell Transplantation
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Affiliation(s)
- Young Eun Lee
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jaeyeol An
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kee-Hang Lee
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sung Su Kim
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hye Jin Song
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Heejang Pyeon
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyun Nam
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyeongjin Kang
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
- * E-mail: (KMJ); (KK)
| | - Kyeung Min Joo
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
- Department of Anatomy and Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Republic of Korea
- * E-mail: (KMJ); (KK)
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Ahn M, Moon C, Park C, Kim J, Sim KB, Shin T. Transient activation of an adaptor protein, disabled-2, in rat spinal cord injury. Acta Histochem 2015; 117:56-61. [PMID: 25432322 DOI: 10.1016/j.acthis.2014.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 11/04/2014] [Indexed: 12/01/2022]
Abstract
We previously reported that disabled-2 (Dab-2), a cytosolic adaptor protein, was expressed in inflammatory and glial cells in the central nervous system (CNS) in experimental autoimmune encephalomyelitis and cerebral cryoinjury. Here, to determine the pattern of Dab-2 expression in a clip compression-induced rat spinal cord injury (SCI) model, the protein level and localization of Dab-2 in the spinal cord were investigated in rats with SCI using Western blotting and immunohistochemistry. Western blotting revealed that the expression of both the 75- and 100-kDa isoforms of Dab-2 peaked significantly in the spinal cord after clip compression injury 7 days post-injury compared to sham controls, and declined slightly thereafter. Immunohistochemistry revealed weak Dab-2 immunostaining in some neurons, glial cells, and ependymal cells in the spinal cords of the control animals, compared to staining in the macrophages and reactive astrocytes in lesions of the SCI animals. Overall, these findings suggest that both isoforms of Dab-2 are transiently upregulated in response to SCI and that the increased expression of Dab-2 is associated with the early activation of macrophages and astrogliosis in the course of CNS inflammation.
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Jokubaitis VG, Gresle MM, Kemper DA, Doherty W, Perreau VM, Cipriani TL, Jonas A, Shaw G, Kuhlmann T, Kilpatrick TJ, Butzkueven H. Endogenously regulated Dab2 worsens inflammatory injury in experimental autoimmune encephalomyelitis. Acta Neuropathol Commun 2013; 1:32. [PMID: 24252604 PMCID: PMC3893401 DOI: 10.1186/2051-5960-1-32] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 06/18/2013] [Indexed: 01/07/2023] Open
Abstract
Background Neuroinflammation regulates both disease pathogenesis and repair in multiple sclerosis. In early multiple sclerosis lesion development, neuroinflammation causes demyelination and axonal injury, the likely final common determinant of disability. Here we report the identification of a novel neuroinflammatory mediator, Disabled-2 (Dab2). Dab2 is an intracellular adaptor protein with previously unknown function in the central nervous system. Results We report that Dab2 is up-regulated in lesional macrophages/microglia in the spinal cord in murine experimental autoimmune encephalomyelitis, a model of multiple sclerosis. We demonstrate that dab2 expression is positively correlated with experimental autoimmune encephalomyelitis disease severity during the acute disease phase. Furthermore, dab2-deficient mice have a less severe experimental autoimmune encephalomyelitis disease course and suffer less neuroinflammation and less axonal injury than their wild-type littermates. We demonstrate that dab2 expression is strongly associated with the expression of inducible nitric oxide synthase. We further demonstrate that Dab2 is expressed at the protein level by macrophages in early acute human multiple sclerosis lesions and that this correlates with axonal injury. Conclusions Together, these results suggest that endogenous Dab2 exacerbates central nervous system inflammation, potentially acting to up-regulate reactive oxygen species expression in macrophages and microglia, and that it is of potential pathogenic relevance in Multiple Sclerosis.
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