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Zhang R, Zeng H, Zhang Y, Chen K, Zhang C, Song C, Fang L, Xu Z, Yang K, Jin B, Wang Q, Chen L. CD226 ligation protects against EAE by promoting IL-10 expression via regulation of CD4+ T cell differentiation. Oncotarget 2017; 7:19251-64. [PMID: 26942885 PMCID: PMC4991380 DOI: 10.18632/oncotarget.7834] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 01/29/2016] [Indexed: 11/25/2022] Open
Abstract
Treatment targeting CD226 can ameliorate experimental autoimmune encephalomyelitis (EAE), the widely accepted model of MS. However, the mechanisms still need to be elucidated. Here we showed that CD226 blockage by anti-CD226 blocking mAb LeoA1 efficiently promoted IL-10 production in human peripheral blood monocytes (PBMC) or in mixed lymphocyte culture (MLC) system, significantly induced the CD4+IL-10+ T cell differentiation while suppressing the generation of Th1 and Th17. Furthermore, CD226 pAb administration in vivo reduced the onset of EAE in mice by promoting IL-10 production and regulating T cell differentiation. Concomitantly, the onset and severity of EAE were reduced and the serum IL-10 expression levels were increased in CD226 knockout mice than that in control mice when both received EAE induction. These novel findings confirmed that CD226 played a pivotal role in mediating autoimmune diseases such as EAE. Furthermore, to our knowledge, we show for the first time that IL-10 is an important contributor in the inhibitory effects of CD226 ligation on EAE.
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Affiliation(s)
- Rong Zhang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China.,State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Hanyu Zeng
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Yun Zhang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Kun Chen
- Department of Neurobiology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Chunmei Zhang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Chaojun Song
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Liang Fang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Zhuwei Xu
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Kun Yang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Boquan Jin
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Qintao Wang
- State Key Laboratory of Military Stomatology, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Lihua Chen
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
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Fang L, Zhang X, Miao J, Zhao F, Yang K, Zhuang R, Bujard H, Wei Y, Yang A, Chen L, Jin B. Expression of CD226 Antagonizes Apoptotic Cell Death in Murine Thymocytes. THE JOURNAL OF IMMUNOLOGY 2009; 182:5453-60. [DOI: 10.4049/jimmunol.0803090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Localization of CD226 in the mouse hippocampus and cerebellum during adulthood and postnatal development. Neuroscience 2009; 158:766-75. [PMID: 18793698 DOI: 10.1016/j.neuroscience.2008.07.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2008] [Revised: 07/20/2008] [Accepted: 07/21/2008] [Indexed: 11/23/2022]
Abstract
CD226, a member of cell adhesion molecules, has been widely studied in the immune system; however, its expression in the CNS remains unknown. In our present study, we detected CD226 mRNA and protein in the mouse hippocampus and cerebellum by RT-PCR and Western blotting, respectively. Immunohistochemical studies found that CD226 is primarily located in the hilus of the dentate gyrus and stratum lucidum aligned along the pyramidal cells in the hippocampal CA3 area, the interspaces of granular cells and the somata of the Purkinje cells in the cerebellar cortex during adulthood. Double-staining results revealed that CD226 co-localized well with synaptic marker proteins including synaptophysin, syntaxin and PSD-95. During postnatal development, CD226 could not be detected at its adult locations until postnatal day 12; however, it was temporally expressed in the somata of neighboring or distant nuclei associated with its adult location. These results showed the diverse localization of CD226 in the mouse hippocampus and cerebellum for the first time and suggested its potential role in the CNS.
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