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Yau ACY, Piehl F, Olsson T, Holmdahl R. Effects of C2ta genetic polymorphisms on MHC class II expression and autoimmune diseases. Immunology 2016; 150:408-417. [PMID: 27861821 DOI: 10.1111/imm.12692] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/03/2016] [Accepted: 11/09/2016] [Indexed: 11/28/2022] Open
Abstract
Antigen presentation by the MHC-II to CD4+ T cells is important in adaptive immune responses. The class II transactivator (CIITA in human and C2TA in mouse) is the master regulator of MHC-II gene expression. It coordinates the transcription factors necessary for the transcription of MHC-II molecules. In humans, genetic variations in CIITA have been associated with differential expression of MHC-II and susceptibility to autoimmune diseases. Here we made use of a C2ta congenic mouse strain (expressing MHC-II haplotype H-2q ) to investigate the effect of the natural genetic polymorphisms in type I promoter of C2ta on MHC-II expression and function. We demonstrate that an allelic variant in the type I promoter of C2ta resulted in an increased expression of MHC-II on macrophages (72-151% higher mean florescence intensity) and conventional dendritic cells (13-65% higher mean florescence intensity) in both spleen and peripheral blood. The increase in MHC-II expression resulted in an increase in antigen presentation to T cells in vitro and increased T-cell activation. The differential MHC-II expression in B6Q.C2ta, however, did not alter the disease development in models of rheumatoid arthritis (collagen-induced arthritis and human glucose-6-phosphate-isomerase325-339 -peptide-induced arthritis), or multiple sclerosis (MOG1-125 protein-induced and MOG79-96 peptide-induced experimental autoimmune encephalomyelitis). This is the first study to address the role of an allelic variant in type I promoter of C2ta in MHC-II expression and autoimmune diseases; and shows that C2ta polymorphisms regulate MHC-II expression and T-cell responses but do not necessarily have a strong impact on autoimmune diseases.
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Affiliation(s)
- Anthony C Y Yau
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Piehl
- Department of Clinical Neuroscience, Neuroimmunology Unit, Karolinska Institutet, Stockholm, Sweden
| | - Tomas Olsson
- Department of Clinical Neuroscience, Neuroimmunology Unit, Karolinska Institutet, Stockholm, Sweden
| | - Rikard Holmdahl
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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Matsukura Y, Muneta T, Tsuji K, Miyatake K, Yamada J, Abula K, Koga H, Tomita M, Sekiya I. Mouse synovial mesenchymal stem cells increase in yield with knee inflammation. J Orthop Res 2015; 33:246-53. [PMID: 25403845 PMCID: PMC4359008 DOI: 10.1002/jor.22753] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 09/19/2014] [Indexed: 02/04/2023]
Abstract
Even though mouse studies have various advantages, harvesting an adequate number of synovial mesenchymal stem cells (MSCs) is difficult in mice. We investigated whether the total yield of MSCs increased in synovium with inflammation in mice. Infrapatellar fat pads (IFPs) were harvested from 10 knees of 5 mice 3, 7, and 14 days after intraarticular injection of carrageenan. Ten IFPs were also harvested from untreated knees as a control. Seven days after initial plating, the total yield of cells was compared among the 4 groups (n = 4-6). The harvested cells were analyzed for multipotentiality and surface epitopes. Furthermore, knee synovitis was compared among the 4 groups in histology. The number of cells in the 3 and 7 days treated group was significantly higher than the other groups. The harvested cells had characteristics of MSCs. Synovitis in the 3 and 7 days treated groups was significantly severer than the other groups. There seemed to be a relationship between the synovitis score and the total yield of cells derived from IFPs. In mice, it became possible to increase the yield 50-fold by inducing inflammation. This method makes it possible to analyze the molecular mechanisms of cartilage regeneration of synovial MSCs in mice models.
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Affiliation(s)
- Yu Matsukura
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Kazumasa Miyatake
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Jun Yamada
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Kahaer Abula
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Makoto Tomita
- Clinical Research Center, Tokyo Medical and Dental UniversityTokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental UniversityTokyo, Japan,Correspondence to: Ichiro Sekiya (T: +81-3-5803-4017; F: +81-3-5803-0170; E-mail: )
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Duraes FV, Thelemann C, Sarter K, Acha-Orbea H, Hugues S, Reith W. Role of major histocompatibility complex class II expression by non-hematopoietic cells in autoimmune and inflammatory disorders: facts and fiction. ACTA ACUST UNITED AC 2014; 82:1-15. [PMID: 23745569 DOI: 10.1111/tan.12136] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
It is well established that interactions between CD4(+) T cells and major histocompatibility complex class II (MHCII) positive antigen-presenting cells (APCs) of hematopoietic origin play key roles in both the maintenance of tolerance and the initiation and development of autoimmune and inflammatory disorders. In sharp contrast, despite nearly three decades of intensive research, the functional relevance of MHCII expression by non-hematopoietic tissue-resident cells has remained obscure. The widespread assumption that MHCII expression by non-hematopoietic APCs has an impact on autoimmune and inflammatory diseases has in most instances neither been confirmed nor excluded by indisputable in vivo data. Here we review and put into perspective conflicting in vitro and in vivo results on the putative impact of MHCII expression by non-hematopoietic APCs--in both target organs and secondary lymphoid tissues--on the initiation and development of representative autoimmune and inflammatory disorders. Emphasis will be placed on the lacunar status of our knowledge in this field. We also discuss new mouse models--developed on the basis of our understanding of the molecular mechanisms that regulate MHCII expression--that constitute valuable tools for filling the severe gaps in our knowledge on the functions of non-hematopoietic APCs in inflammatory conditions.
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Affiliation(s)
- F V Duraes
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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de la Rica L, Urquiza JM, Gómez-Cabrero D, Islam ABMMK, López-Bigas N, Tegnér J, Toes REM, Ballestar E. Identification of novel markers in rheumatoid arthritis through integrated analysis of DNA methylation and microRNA expression. J Autoimmun 2013; 41:6-16. [PMID: 23306098 DOI: 10.1016/j.jaut.2012.12.005] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 12/16/2012] [Indexed: 12/13/2022]
Abstract
Autoimmune rheumatic diseases are complex disorders, whose etiopathology is attributed to a crosstalk between genetic predisposition and environmental factors. Both variants of autoimmune susceptibility genes and environment are involved in the generation of aberrant epigenetic profiles in a cell-specific manner, which ultimately result in dysregulation of expression. Furthermore, changes in miRNA expression profiles also cause gene dysregulation associated with aberrant phenotypes. In rheumatoid arthritis, several cell types are involved in the destruction of the joints, synovial fibroblasts being among the most important. In this study we performed DNA methylation and miRNA expression screening of a set of rheumatoid arthritis synovial fibroblasts and compared the results with those obtained from osteoarthritis patients with a normal phenotype. DNA methylation screening allowed us to identify changes in novel key target genes like IL6R, CAPN8 and DPP4, as well as several HOX genes. A significant proportion of genes undergoing DNA methylation changes were inversely correlated with expression. miRNA screening revealed the existence of subsets of miRNAs that underwent changes in expression. Integrated analysis highlighted sets of miRNAs that are controlled by DNA methylation, and genes that are regulated by DNA methylation and are targeted by miRNAs with a potential use as clinical markers. Our study enabled the identification of novel dysregulated targets in rheumatoid arthritis synovial fibroblasts and generated a new workflow for the integrated analysis of miRNA and epigenetic control.
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Affiliation(s)
- Lorenzo de la Rica
- Chromatin and Disease Group, Cancer Epigenetics and Biology Programme, Bellvitge Biomedical Research Institute, 08907 L'Hospitalet de Llobregat, Barcelona, Spain
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Futami I, Ishijima M, Kaneko H, Tsuji K, Ichikawa-Tomikawa N, Sadatsuki R, Muneta T, Arikawa-Hirasawa E, Sekiya I, Kaneko K. Isolation and characterization of multipotential mesenchymal cells from the mouse synovium. PLoS One 2012; 7:e45517. [PMID: 23029067 PMCID: PMC3445493 DOI: 10.1371/journal.pone.0045517] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Accepted: 08/20/2012] [Indexed: 02/03/2023] Open
Abstract
The human synovium contains mesenchymal stem cells (MSCs), which are multipotential non-hematopoietic progenitor cells that can differentiate into a variety of mesenchymal lineages and they may therefore be a candidate cell source for tissue repair. However, the molecular mechanisms by which this can occur are still largely unknown. Mouse primary cell culture enables us to investigate the molecular mechanisms underlying various phenomena because it allows for relatively easy gene manipulation, which is indispensable for the molecular analysis. However, mouse synovial mesenchymal cells (SMCs) have not been established, although rabbit, cow, and rat SMCs are available, in addition to human MSCs. The aim of this study was to establish methods to harvest the synovium and to isolate and culture primary SMCs from mice. As the mouse SMCs were not able to be harvested and isolated using the same protocol for human, rat and rabbit SMCs, the protocol for humans was modified for SMCs from the Balb/c mouse knee joint. The mouse SMCs obtained showed superior proliferative potential, growth kinetics and colony formation compared to cells derived from muscle and bone marrow. They expressed PDGFRá and Sca-1 detected by flow cytometry, and showed an osteogenic, adipogenic and chondrogenic potential similar or superior to the cells derived from muscle and bone marrow by demonstrating in vitro osteogenesis, adipogenesis and chondrogenesis. In conclusion, we established a primary mouse synovial cell culture method. The cells derived from the mouse synovium demonstrated both the ability to proliferate and multipotentiality similar or superior to the cells derived from muscle and bone marrow.
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Affiliation(s)
- Ippei Futami
- Department of Medicine for Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan
| | - Muneaki Ishijima
- Department of Medicine for Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
- * E-mail:
| | - Haruka Kaneko
- Department of Medicine for Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan
| | - Kunikazu Tsuji
- International Research Center for Molecular Science in Tooth and Bone Diseases, Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoki Ichikawa-Tomikawa
- Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ryo Sadatsuki
- Department of Medicine for Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan
| | - Takeshi Muneta
- International Research Center for Molecular Science in Tooth and Bone Diseases, Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan
- Section of Orthopaedic Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eri Arikawa-Hirasawa
- Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ichiro Sekiya
- Section of Cartilage Regeneration, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuo Kaneko
- Department of Medicine for Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
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