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Vasilev G, Vasileva V, Ivanova M, Stanilova S, Manolova I, Miteva L. An Elevated IL10 mRNA Combined with Lower TNFA mRNA Level in Active Rheumatoid Arthritis Peripheral Blood. Curr Issues Mol Biol 2024; 46:2644-2657. [PMID: 38534783 DOI: 10.3390/cimb46030167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 03/28/2024] Open
Abstract
We aimed to investigate the expression of pro-inflammatory cytokine genes TNFA, IL6, IL12B, IL23, IL18 and immunoregulatory genes FOXP3, TGFB1, and IL10 in the peripheral blood of patients with rheumatoid arthritis (RA) at messenger ribonucleic acid (mRNA) level. The total RNA was isolated from peripheral blood samples. Real-time quantitative PCR was used to perform TaqMan-based assays to quantify mRNAs from 8 target genes. IL23A was upregulated (1.7-fold), whereas IL6 (5-fold), FOXP3 (4-fold), and IL12B (2.56-fold) were downregulated in patients compared to controls. In addition, we found a strong positive correlation between the expression of FOXP3 and TNFA and a moderate correlation between FOXP3 and TGFB1. These data showed the imbalance of the T helper (Th) 1/Th17/ T regulatory (Treg) axis at a systemic level in RA. In cases with active disease, the IL10 gene expression was approximately 2-fold higher; in contrast, the expression of FOXP3 was significantly decreased (3.38-fold). The main part of patients with higher disease activity expressed upregulation of IL10 and downregulation of TNFA. Different disease activity cohorts could be separated based on IL10, TNFA and IL12B expression combinations. In conclusion, our results showed that active disease is associated with an elevated IL10 and lower TNFA mRNA level in peripheral blood cells of RA patients.
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Affiliation(s)
- Georgi Vasilev
- Laboratory of Hematopathology and Immunology, National Specialized Hospital for Active Treatment of Hematological Diseases, Plovdivsko Pole Str. No. 6, 1756 Sofia, Bulgaria
- Medical Faculty, Sofia University St. Kliment Ohridski, 1 Kozyak Str., 1407 Sofia, Bulgaria
| | - Viktoria Vasileva
- Department of Molecular Biology, Immunology and Medical Genetics, Medical Faculty, Trakia University, Armeiska Str. No. 11, 6000 Stara Zagora, Bulgaria
- Clinical Laboratory, Trakia Hospital, Dunav Str. No. 1, 6000 Stara Zagora, Bulgaria
| | - Mariana Ivanova
- Clinic of Rheumatology, University Hospital "St. Ivan Rilski", Urvich Str. No. 13, 1612 Sofia, Bulgaria
- Medical Faculty, Medical University-Sofia, Ivan Geshov Blvd. No. 15, 1431 Sofia, Bulgaria
| | - Spaska Stanilova
- Department of Molecular Biology, Immunology and Medical Genetics, Medical Faculty, Trakia University, Armeiska Str. No. 11, 6000 Stara Zagora, Bulgaria
| | - Irena Manolova
- Department of Molecular Biology, Immunology and Medical Genetics, Medical Faculty, Trakia University, Armeiska Str. No. 11, 6000 Stara Zagora, Bulgaria
| | - Lyuba Miteva
- Department of Molecular Biology, Immunology and Medical Genetics, Medical Faculty, Trakia University, Armeiska Str. No. 11, 6000 Stara Zagora, Bulgaria
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Pascual-García S, Martínez-Peinado P, Pujalte-Satorre C, Navarro-Sempere A, Esteve-Girbés J, López-Jaén AB, Javaloyes-Antón J, Cobo-Velacoracho R, Navarro-Blasco FJ, Sempere-Ortells JM. Exosomal Osteoclast-Derived miRNA in Rheumatoid Arthritis: From Their Pathogenesis in Bone Erosion to New Therapeutic Approaches. Int J Mol Sci 2024; 25:1506. [PMID: 38338785 PMCID: PMC10855630 DOI: 10.3390/ijms25031506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that causes inflammation, pain, and ultimately, bone erosion of the joints. The causes of this disease are multifactorial, including genetic factors, such as the presence of the human leukocyte antigen (HLA)-DRB1*04 variant, alterations in the microbiota, or immune factors including increased cytotoxic T lymphocytes (CTLs), neutrophils, or elevated M1 macrophages which, taken together, produce high levels of pro-inflammatory cytokines. In this review, we focused on the function exerted by osteoclasts on osteoblasts and other osteoclasts by means of the release of exosomal microRNAs (miRNAs). Based on a thorough revision, we classified these molecules into three categories according to their function: osteoclast inhibitors (miR-23a, miR-29b, and miR-214), osteoblast inhibitors (miR-22-3p, miR-26a, miR-27a, miR-29a, miR-125b, and miR-146a), and osteoblast enhancers (miR-20a, miR-34a, miR-96, miR-106a, miR-142, miR-199a, miR-324, and miR-486b). Finally, we analyzed potential therapeutic targets of these exosomal miRNAs, such as the use of antagomiRs, blockmiRs, agomiRs and competitive endogenous RNAs (ceRNAs), which are already being tested in murine and ex vivo models of RA. These strategies might have an important role in reestablishing the regulation of osteoclast and osteoblast differentiation making progress in the development of personalized medicine.
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Affiliation(s)
- Sandra Pascual-García
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | | | | | - Alicia Navarro-Sempere
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Jorge Esteve-Girbés
- Department of Legal Studies of the State, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Ana B. López-Jaén
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Juan Javaloyes-Antón
- Department of Physics, Systems Engineering and Signal Theory, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Raúl Cobo-Velacoracho
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Francisco J. Navarro-Blasco
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
- Rheumatology Unit, University General Hospital of Elche, 03203 Elche, Spain
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Zhang J, Liu H, Chen Y, Liu H, Zhang S, Yin G, Xie Q. Augmenting regulatory T cells: new therapeutic strategy for rheumatoid arthritis. Front Immunol 2024; 15:1312919. [PMID: 38322264 PMCID: PMC10844451 DOI: 10.3389/fimmu.2024.1312919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/08/2024] [Indexed: 02/08/2024] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, systemic autoimmune condition marked by inflammation of the joints, degradation of the articular cartilage, and bone resorption. Recent studies found the absolute and relative decreases in circulating regulatory T cells (Tregs) in RA patients. Tregs are a unique type of cells exhibiting immunosuppressive functions, known for expressing the Foxp3 gene. They are instrumental in maintaining immunological tolerance and preventing autoimmunity. Increasing the absolute number and/or enhancing the function of Tregs are effective strategies for treating RA. This article reviews the studies on the mechanisms and targeted therapies related to Tregs in RA, with a view to provide better ideas for the treatment of RA.
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Affiliation(s)
- Jiaqian Zhang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Hongjiang Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Yuehong Chen
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Huan Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Shengxiao Zhang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Geng Yin
- Department of General Practice, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, China
| | - Qibing Xie
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
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Pascual-García S, Martínez-Peinado P, López-Jaén AB, Navarro-Blasco FJ, Montoyo-Pujol YG, Roche E, Peiró G, Sempere-Ortells JM. Analysis of Novel Immunological Biomarkers Related to Rheumatoid Arthritis Disease Severity. Int J Mol Sci 2023; 24:12351. [PMID: 37569732 PMCID: PMC10418816 DOI: 10.3390/ijms241512351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/21/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Rheumatoid factor (RF) and anti-citrullinated protein antibodies (ACPAs) are the most frequently used rheumatoid arthritis (RA) diagnostic markers, but they are unable to anticipate the patient's evolution or response to treatment. The aim of this study was to identify possible severity biomarkers to predict an upcoming flare-up or remission period. To address this objective, sera and anticoagulated blood samples were collected from healthy controls (HCs; n = 39) and from early RA (n = 10), flare-up (n = 5), and remission (n = 16) patients. We analyzed leukocyte phenotype markers, regulatory T cells, cell proliferation, and cytokine profiles. Flare-up patients showed increased percentages of cluster of differentiation (CD)3+CD4- lymphocytes (p < 0.01) and granulocytes (p < 0.05) but a decreased natural killer (NK)/T lymphocyte ratio (p < 0.05). Analysis of leukocyte markers by principal component analysis (PCA) and receiver operating characteristic (ROC) curves showed that CD45RO+ (p < 0.0001) and CD45RA+ (p < 0.0001) B lymphocyte expression can discriminate between HCs and early RA patients, while CD3+CD4- lymphocyte percentage (p < 0.0424) and CD45RA+ (p < 0.0424), CD62L+ (p < 0.0284), and CD11a+ (p < 0.0185) B lymphocyte expression can differentiate between flare-up and RA remission subjects. Thus, the combined study of these leukocyte surface markers could have potential as disease severity biomarkers for RA, whose fluctuations could be related to the development of the characteristic pro-inflammatory environment.
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Affiliation(s)
- Sandra Pascual-García
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | | | - Ana B. López-Jaén
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
| | - Francisco J. Navarro-Blasco
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
- Rheumatology Unit, University General Hospital of Elche, 03203 Elche, Spain
| | - Yoel G. Montoyo-Pujol
- Medical Oncology Department, Dr. Balmis University General Hospital, Pintor Baeza 12, 03010 Alicante, Spain
- Alicante Institute for Health and Biomedical Research (ISABIAL), Pintor Baeza 12, 03010 Alicante, Spain
| | - Enrique Roche
- Biochemistry and Cell Therapy Unit, Institute of Bioengineering, Miguel Hernandez University of Elche, 03202 Elche, Spain
| | - Gloria Peiró
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
- Alicante Institute for Health and Biomedical Research (ISABIAL), Pintor Baeza 12, 03010 Alicante, Spain
- Pathology Department, Dr. Balmis University General Hospital, Pintor Baeza 12, 03010 Alicante, Spain
| | - José M. Sempere-Ortells
- Department of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
- Alicante Institute for Health and Biomedical Research (ISABIAL), Pintor Baeza 12, 03010 Alicante, Spain
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Wang T, Rui J, Shan W, Xue F, Feng D, Dong L, Mao J, Shu Y, Mao C, Wang X. Imbalance of Th17, Treg, and helper innate lymphoid cell in the peripheral blood of patients with rheumatoid arthritis. Clin Rheumatol 2022; 41:3837-3849. [PMID: 35925523 PMCID: PMC9652246 DOI: 10.1007/s10067-022-06315-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/20/2022] [Accepted: 07/25/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a chronic inflammatory disease involving a variety of immune cells, including adaptive T and B cells and innate lymphoid cells (ILCs). Understanding the pathogenic role of these immune cells in RA provides new insights into the intervention and treatment of RA. METHODS A total of 86 patients with RA (RA group) and 50 healthy controls (HC) were included in the study. The immune cells of CD4+, CD19+ B, NK, Th17, Treg, ILCs, and their subsets (i.e., ILC1s, ILC2s, and ILC3s) were characterized in peripheral blood mononuclear cells by flow cytometry. Cytokines (i.e., IFN-γ, IL-4, IL-10, IL-17A, IL-22, and IL-33) in sera were detected using ELISA. The above immune cells and cytokines were analyzed in patients with different disease activity status and positive ( +) or negative ( -) rheumatoid factor (RF)/anti-citrullinated protein antibodies (ACPA). RESULTS Patients with RA had higher percentages of CD4+ T, CD19+ B, Th17, ILC2s, and ILC3s and lower percentages of Treg and ILC1s than HC. Patients with RA had elevated levels of IFN-γ, IL-4, IL-17A, and IL-22 and decreased level of IL-10. Compared with HC, patients with high disease activity had higher percentages of Th17, ILC2s, and ILC3s; lower percentages of ILC1s; and lower level of IL-10. The percentage of Treg cells in remission, low, moderate, and high disease activities decreased, whereas the level of IL-17A increased compared with HC. Furthermore, RF+ or ACPA+ patients exhibited elevated percentages of CD19+ B, ILC2s, and ILC3s and had decreased percentage of ILC1s and Treg cells than HC. The percentage of Th17 cells increased in RF-/ACPA- and RF+/ACPA+ patients. However, the above immune cells between RF or ACPA positive and negative patients were not significantly different. CONCLUSION Th17, Treg, and ILC subset dysregulations are present in patients with RA but may not be associated with conventionally defined seropositive RF and ACPA. Key Points • Th17, Treg, and ILC subset dysregulations are present in patients with RA but may reflect inflammation rather than specific diseases and stages. • No difference for the distribution of Th17, Treg, and ILC subsets between RF+ and RF- patients and between ACPA+ and ACPA- patients. The screening spectrum of RF and ACPA serology should be expanded to elucidate the role of immune cells in RA pathogenesis.
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Affiliation(s)
- Ting Wang
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
- Department of Clinical Laboratory, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Jinbing Rui
- Department of Rheumatology, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Wenqi Shan
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
| | - Fei Xue
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
| | - Dingqi Feng
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
| | - Liyang Dong
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
- Department of Nuclear Medicine and Institute of Oncology, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Jiahui Mao
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
| | - Yang Shu
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China
| | - Chaoming Mao
- Department of Nuclear Medicine and Institute of Oncology, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Xuefeng Wang
- Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, 212001, China.
- Department of Nuclear Medicine and Institute of Oncology, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China.
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Raugh A, Allard D, Bettini M. Nature vs. nurture: FOXP3, genetics, and tissue environment shape Treg function. Front Immunol 2022; 13:911151. [PMID: 36032083 PMCID: PMC9411801 DOI: 10.3389/fimmu.2022.911151] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/11/2022] [Indexed: 12/11/2022] Open
Abstract
The importance of regulatory T cells (Tregs) in preventing autoimmunity has been well established; however, the precise alterations in Treg function in autoimmune individuals and how underlying genetic associations impact the development and function of Tregs is still not well understood. Polygenetic susceptibly is a key driving factor in the development of autoimmunity, and many of the pathways implicated in genetic association studies point to a potential alteration or defect in regulatory T cell function. In this review transcriptomic control of Treg development and function is highlighted with a focus on how these pathways are altered during autoimmunity. In combination, observations from autoimmune mouse models and human patients now provide insights into epigenetic control of Treg function and stability. How tissue microenvironment influences Treg function, lineage stability, and functional plasticity is also explored. In conclusion, the current efficacy and future direction of Treg-based therapies for Type 1 Diabetes and other autoimmune diseases is discussed. In total, this review examines Treg function with focuses on genetic, epigenetic, and environmental mechanisms and how Treg functions are altered within the context of autoimmunity.
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Affiliation(s)
- Arielle Raugh
- Department of Pathology, Microbiology and Immunology, University of Utah, Salt Lake City, UT, United States
- Translational Biology and Molecular Medicine Graduate Program, Baylor College of Medicine, Houston, TX, United States
| | - Denise Allard
- Department of Pathology, Microbiology and Immunology, University of Utah, Salt Lake City, UT, United States
| | - Maria Bettini
- Department of Pathology, Microbiology and Immunology, University of Utah, Salt Lake City, UT, United States
- *Correspondence: Maria Bettini,
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Luo P, Wang P, Xu J, Hou W, Xu P, Xu K, Liu L. Immunomodulatory role of T helper cells in rheumatoid arthritis : a comprehensive research review. Bone Joint Res 2022; 11:426-438. [PMID: 35775145 PMCID: PMC9350707 DOI: 10.1302/2046-3758.117.bjr-2021-0594.r1] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that involves T and B cells and their reciprocal immune interactions with proinflammatory cytokines. T cells, an essential part of the immune system, play an important role in RA. T helper 1 (Th1) cells induce interferon-γ (IFN-γ), tumour necrosis factor-α (TNF-α), and interleukin (IL)-2, which are proinflammatory cytokines, leading to cartilage destruction and bone erosion. Th2 cells primarily secrete IL-4, IL-5, and IL-13, which exert anti-inflammatory and anti-osteoclastogenic effects in inflammatory arthritis models. IL-22 secreted by Th17 cells promotes the proliferation of synovial fibroblasts through induction of the chemokine C-C chemokine ligand 2 (CCL2). T follicular helper (Tfh) cells produce IL-21, which is key for B cell stimulation by the C-X-C chemokine receptor 5 (CXCR5) and coexpression with programmed cell death-1 (PD-1) and/or inducible T cell costimulator (ICOS). PD-1 inhibits T cell proliferation and cytokine production. In addition, there are many immunomodulatory agents that promote or inhibit the immunomodulatory role of T helper cells in RA to alleviate disease progression. These findings help to elucidate the aetiology and treatment of RA and point us toward the next steps. Cite this article: Bone Joint Res 2022;11(7):426–438.
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Affiliation(s)
- Pan Luo
- Department of Joint Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Peixu Wang
- Department of Orthopedics, China-Japan Friendship Hospital, China-Japan Friendship Institute of Clinical Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing, China
| | - Jiawen Xu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Weikun Hou
- Department of Joint Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Peng Xu
- Department of Joint Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Ke Xu
- Department of Joint Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Lin Liu
- Department of Joint Surgery, HongHui Hospital, Xi'an Jiaotong University, Xi'an, China
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Peripheral Blood from Rheumatoid Arthritis Patients Shows Decreased T reg CD25 Expression and Reduced Frequency of Effector T reg Subpopulation. Cells 2021; 10:cells10040801. [PMID: 33916798 PMCID: PMC8067140 DOI: 10.3390/cells10040801] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/26/2021] [Accepted: 04/01/2021] [Indexed: 12/22/2022] Open
Abstract
Rheumatoid arthritis (RA) is a common autoimmune disease characterized by immune cell infiltration of the synovium, leading to the loss of cartilage, bone, and joint function. Although regulatory T (Treg) cells are thought to modulate the initiation and progression of RA, a consensus has yet to be reached regarding the function and composition of Treg cells in RA patients. To address these discrepancies, we analyzed not only the total Treg frequency but also that of Treg subpopulations in the peripheral blood of RA patients and healthy controls by flow cytometry. We found that the total Treg population was not significantly different between RA and control subjects. However, the effector Treg cell subgroup, defined as CD45RA−CD25hi, showed markedly decreased frequency in RA patients. In addition, the total Treg population from RA patients showed a significant decline in the expression of CD25. Both the naïve and effector Treg subgroups also showed marked reduction of CD25 expression in RA patients compared to controls. These data suggest that the decreased frequency of effector Treg cells and overall reduction of CD25 expression in Treg cells in the peripheral blood may be evidence of altered Treg homeostasis associated with RA pathogenesis.
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Du Y, Fang Q, Zheng SG. Regulatory T Cells: Concept, Classification, Phenotype, and Biological Characteristics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:1-31. [PMID: 33523440 DOI: 10.1007/978-981-15-6407-9_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Regulatory T cells (Treg) play an indispensable role in maintaining the body's immune nonresponse to self-antigens and suppressing the body's unwarranted and potentially harmful immune responses. Their absence, reduction, dysfunction, transformation, and instability can lead to numerous autoimmune diseases. There are several distinct subtypes of the Treg cells, although they share certain biological characteristics and have unique phenotypes with different regulatory functions, as well as mechanistic abilities. In this book chapter, we introduce the latest advances in Treg cell subtypes pertaining to classification, phenotype, biological characteristics, and mechanisms. We also highlight the relationship between Treg cells and various diseases, including autoimmune, infectious, as well as tumors and organ transplants.
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Affiliation(s)
- Yang Du
- Department of Pathology and Physiopathology, Guilin Medical University, Guilin, Guangxi, China.,Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, Guangxi, China
| | - Qiannan Fang
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Song-Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA.
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Paradowska-Gorycka A, Wajda A, Romanowska-Próchnicka K, Walczuk E, Kuca-Warnawin E, Kmiolek T, Stypinska B, Rzeszotarska E, Majewski D, Jagodzinski PP, Pawlik A. Th17/Treg-Related Transcriptional Factor Expression and Cytokine Profile in Patients With Rheumatoid Arthritis. Front Immunol 2020; 11:572858. [PMID: 33362761 PMCID: PMC7759671 DOI: 10.3389/fimmu.2020.572858] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 11/06/2020] [Indexed: 12/15/2022] Open
Abstract
Objectives The aim of our study was to determine whether there is a correlation between transcription factors expression and Th17/Treg ratio, cytokine profile in the RA phenotype as well as to identify transcription factors that could be a potential biomarker for RA. Methods The study was conducted on 45 patients with RA, 27 patients with OA and 46 healthy controls (HCs). Th17 and Treg frequency was determined by flow cytometry (15 patients with RA/OA and 15 subjects of HC). Gene expression was estimated by qPCR, and the serum cytokine levels were determined by ELISA. Results The percentage of Treg (CD4+CD25highCD127-) cells in RA patients was lower than in OA patients or HCs. Proportions of Th17 (CD4+CCR6+CXCR3-) cells were higher in RA and OA in comparison to HCs. STAT5 showed a very high expression in the blood of RA patients compared to healthy subjects. The expression of STAT5 and HELIOS was not detected in Th17 cells. A positive correlation between SMAD3 and STAT3 in RA patients was observed. Negative correlations between HIF-1A and SMAD2 in RA Treg cells and DAS-28 score were observed. The range of serum of IL-17 and IL-21 were higher in RA patients than in OA patients. Concentrations of serum IL-2 and IFN-γ were higher in RA and OA patients than in healthy subjects. Based on the ROC analysis, the diagnostic potential of the combination of HIF1A, SMAD3 and STAT3, was determined at AUC 0.95 for distinguishing RA patients from HCs. For distinguishing RA patients from OA patients the diagnostic potential of the combination of SMAD2, SMAD3, SMAD4 and STAT3, was determined at AUC 0.95. Conclusion Based on our study, we conclude that SMAD3 and STAT3 could be potential diagnostic biomarkers for RA.
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Affiliation(s)
- Agnieszka Paradowska-Gorycka
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Anna Wajda
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Katarzyna Romanowska-Próchnicka
- Department of Connective Tissue Diseases, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland.,Department of Pathophysiology, Warsaw Medical University, Warsaw, Poland
| | - Ewa Walczuk
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Ewa Kuca-Warnawin
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Tomasz Kmiolek
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Barbara Stypinska
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Ewa Rzeszotarska
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
| | - Dominik Majewski
- Department of Rheumatology and Internal Medicine, Poznan University of Medical Science, Poznan, Poland
| | - Pawel Piotr Jagodzinski
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Poznan, Poland
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
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El-Banna HS, Gado SE. Vitamin D: does it help Tregs in active rheumatoid arthritis patients. Expert Rev Clin Immunol 2020; 16:847-853. [PMID: 32783547 DOI: 10.1080/1744666x.2020.1805317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Background Regulatory T cells (Tregs) play an important role in the maintenance of immunological tolerance. Tregs deficiency or suppressor functions reduction may be associated with autoimmune diseases development. Objectives To estimate the effect of vitamin D supplementation on Tregs level in the peripheral blood of active rheumatoid arthritis (RA) patients. Methods 40 active RA patients were randomly assigned into two groups. Group I received methotrexate (MTX) plus hydroxychloroquine, group II received MTX, hydroxychloroquine plus vitamin D supplementation for 3 months, and 30 healthy volunteers as control group. Peripheral blood Tregs were measured at baseline and after 3 months by Flow Cytometry. Results At baseline, Tregs percentage was significantly decreased (p<0.001) in both RA patient groups (13.52±1.95%, 13.65±2.98% respectively), compared to controls (28.44±7.37%) with no significant difference between the two patient groups (p=0.866). After 3 months, there was a significant elevation in Tregs percentage in group II compared to group I (p<0.001). Tregs elevation was associated with significant DAS-28 score reduction (p<0.001). Conclusion Vitamin D appears to have important immunomodulatory functions. Vitamin D supplementation can be combined safely with traditional DMARDs to regulate the immune system. Clinical trial registration Tanta University Protocol Record 33846, Vitamin D Effect in Rheumatoid Arthritis, http://www.clinicaltrials.gov, NCT04472481.
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12
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Regulatory T cells in patients with early untreated rheumatoid arthritis: Phenotypic changes in the course of methotrexate treatment. Biochimie 2020; 174:9-17. [PMID: 32275944 DOI: 10.1016/j.biochi.2020.03.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 02/25/2020] [Accepted: 03/20/2020] [Indexed: 12/15/2022]
Abstract
Rheumatoid arthritis (RA) is frequent systemic autoimmune disease characterized by excessive activation of collagen-specific T helper cells, and elevated level of autoantibodies in the serum. Development of RA is associated with defect in compartment of regulatory CD4+Foxp3+ T cells (Treg), but data concerning suppressive potential of Treg population in RA patients are contradictory and depend on the stage of disease. In this study we aimed to characterize abundance and phenotypic markers of CD4+Foxp3+ Treg in peripheral blood of healthy donors compared to untreated early RA patients to find potential correlations with the disease activity, antibody level, and absolute numbers and proportion of different subpopulations of T cells. Moreover, we assessed the influence of methotrexate (MT) treatment on percentage and absolute numbers of CD4+Foxp3+ Treg from the peripheral blood of untreated early RA patients. We demonstrate that increase and phenotypic changes in Treg population correlate well with response to MT. Analysis of the cohorts of matched RA patients (n = 45) and healthy controls (n = 20) revealed that patients with untreated early RA demonstrate substantial decrease in blood Treg percentage and absolute number, as well as low level of activated Treg surface markers in comparison to healthy control. The defect in Treg compartment negatively correlates with both RA activity and antibody level. MT treatment of patients with early untreated RA increases both proportion and absolute number of Treg with high level of activation markers, suggesting an increase of their functional capacity. Here we speculate the role of Tregs as specific cellular marker of successful RA treatment.
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Kyrgios I, Fragou A, Kotanidou EP, Mouzaki K, Efraimidou S, Tzimagiorgis G, Galli-Tsinopoulou A. DNA methylation analysis within the IL2RA gene promoter in youth with autoimmune thyroid disease. Eur J Clin Invest 2020; 50:e13199. [PMID: 31943147 DOI: 10.1111/eci.13199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/17/2019] [Accepted: 01/08/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Alpha-subunit of the interleukin-2 receptor (IL2RA) is involved in the regulation of T-cell function and has been related to autoimmune thyroid disease (AITD). Although the exact mechanisms are not fully understood, promoter methylation might account for differences in gene expression. The aim of this study was to investigate whether there are differences in the percentage of DNA methylation within the IL2RA gene promoter in young patients with AITD. MATERIALS AND METHODS In a cross-sectional design, the presence of DNA methylation in the IL2RA gene promoter was quantified, by real-time PCR and melting curve analysis, in modified genomic DNA isolated from blood samples of a total of 149 children and adolescents with AITD, including patients with Hashimoto thyroiditis (ΗΤ) (n = 60), Graves' disease (GD) (n = 9), concurrent diagnosis of HT and type 1 diabetes (T1DM + HT) (n = 25), and healthy controls (n = 55). RESULTS The percentage of DNA methylation in the IL2RA gene promoter was significantly decreased in patients with GD (26.0 ± 4.2%) but not in those with HT (36.3 ± 1.4%) in comparison with controls (41.3 ± 1.5%). CONCLUSIONS The observed DNA hypomethylation in the IL2RA gene promoter in patients with GD might be related to its increased expression, thus contributing to the etiopathogenesis of GD in childhood and adolescence.
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Affiliation(s)
- Ioannis Kyrgios
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece.,Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Aikaterini Fragou
- Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eleni P Kotanidou
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Konstantina Mouzaki
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece.,Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Georgios Tzimagiorgis
- Laboratory of Biological Chemistry, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Assimina Galli-Tsinopoulou
- 4th Department of Pediatrics, Medical School, Faculty of Health Sciences, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
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14
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Scheinecker C, Göschl L, Bonelli M. Treg cells in health and autoimmune diseases: New insights from single cell analysis. J Autoimmun 2019; 110:102376. [PMID: 31862128 DOI: 10.1016/j.jaut.2019.102376] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 11/22/2019] [Indexed: 02/07/2023]
Abstract
Autoimmune diseases, such as Systemic Lupus Erythematosus (SLE) or Rheumatoid Arthritis (RA) are characterized by the breakdown of immunological tolerance. Defects of regulatory T cells have been described among the various mechanisms, that are important for the development of autoimmune diseases, due to their critical role as regulators of peripheral immune tolerance and homeostasis. Initially T suppressor cells have been described as one population of peripheral T cells. Based on new technological advances a new understanding of the heterogeneity of different Treg cell populations in the lymphoid and non-lymphoid tissue has evolved over the last years. While initially Foxp3 has been defined as the main master regulator of Treg cells, we have learned that Treg cells from various tissue can be identified by a specific transcriptomic and epigenetic signature. Epigenetic mechanisms allow Treg cell stability, but we have also learned that certain Treg subsets are plastic and can under specific circumstances even enhance autoimmunity and inflammatory processes. Quantitative and functional defects of Treg cells have been observed in a variety of autoimmune diseases. Due to our understanding of the nature of this cell population, Treg cells have been a target of new Treg based therapies, such as low-dose IL-2. In addition, ongoing clinical trials aim to test safety and efficacy of transferred, in vitro expanded Treg cells in patients with autoimmune diseases and transplant patients.
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Affiliation(s)
- Clemens Scheinecker
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria.
| | - Lisa Göschl
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria.
| | - Michael Bonelli
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria.
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15
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Park JS, Moon SJ, Lim MA, Byun JK, Hwang SH, Yang S, Kim EK, Lee H, Kim SM, Lee J, Kwok SK, Min JK, Lee MO, Shin DY, Park SH, Cho ML. Retinoic Acid Receptor-Related Receptor Alpha Ameliorates Autoimmune Arthritis via Inhibiting of Th17 Cells and Osteoclastogenesis. Front Immunol 2019; 10:2270. [PMID: 31636631 PMCID: PMC6787168 DOI: 10.3389/fimmu.2019.02270] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 09/09/2019] [Indexed: 12/18/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory polyarthritis characterized by progressive joint destruction. IL-17-producing CD4+ T (Th17) cells play pivotal roles in RA development and progression. Retinoic acid receptor-related orphan receptor alpha (RORα) is a negative regulator of inflammatory responses, whereas RORγt, another member of the ROR family, is a Th17 lineage-specific transcription factor. Here, we investigated the immunoregulatory potential of RORα in collagen-induced arthritis (CIA) mice, an experimental model of RA. Cholesterol sulfate (CS) or SR1078, a ligand of RORα, inhibited RORγt expression and Th17 differentiation in vitro. In addition, fortification of RORα in T cells inhibited the expression levels of glycolysis-associated genes. We found that RORα overexpression in CIA mice attenuated the clinical and histological severities of inflammatory arthritis. The anti-arthritic effect of RORα was associated with suppressed Th17 differentiation and attenuated mTOR-STAT3 signaling in T cells. Furthermore, altered RORα activity could directly affect osteoclastogenesis implicated in progressive bone destruction in human RA. Our findings defined a critical role of RORα in the pathogenesis of RA. These data suggest that RORα may have novel therapeutic uses in the treatment of RA.
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Affiliation(s)
- Jin-Sil Park
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Su-Jin Moon
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Mi-Ae Lim
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jae-Kyeong Byun
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sun-Hee Hwang
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - SeungCheon Yang
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Eun-Kyung Kim
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hohyun Lee
- College of Pharmacy, Gachon University, Incheon, South Korea
| | - Sung-Min Kim
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jennifer Lee
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Seung-Ki Kwok
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Jun-Ki Min
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Mi-Ock Lee
- College of Pharmacy and Bio-MAX Institute, Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
| | - Dong-Yun Shin
- College of Pharmacy, Gachon University, Incheon, South Korea
| | - Sung-Hwan Park
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Mi-La Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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16
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Yang M, Liu Y, Mo B, Xue Y, Ye C, Jiang Y, Bi X, Liu M, Wu Y, Wang J, Olsen N, Pan Y, Zheng SG. Helios but not CD226, TIGIT and Foxp3 is a Potential Marker for CD4 + Treg Cells in Patients with Rheumatoid Arthritis. Cell Physiol Biochem 2019; 52:1178-1192. [PMID: 30990587 PMCID: PMC6943339 DOI: 10.33594/000000080] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/22/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND/AIMS Rheumatoid arthritis (RA) is a progressive, chronic, even disabling systemic autoimmune disease. Imbalance between pathogenic immune cells and immunosuppressive cells is associated with the pathogenesis and development of RA and other autoimmune diseases. As Foxp3 is also expressed on activated CD4+ cells in the presence of inflammation, the identification of Treg cells in patients with RA remains a challenge. METHODS Comprehensive analyses were carried out by Flow cytometry. Expression of Helios, CD226, T cell immunoreceptor with Ig and ITIM domains clinical samples and healthy controls. RESULTS We have systemically examined three potential markers, Helios, CD226 and TIGIT, that are possibly related to Treg identification, and found that Helios expression on CD4+Foxp3+cells was decreased and negatively correlated with the disease activity of RA patients, while CD226 and TIGIT both showed elevated expression levels in CD4+Foxp3+cells in RA patients and they were not associated with disease activity of RA patients. CONCLUSION Taken together, our findings indicate that CD4+CD25hiCD127low/-Foxp3+Helios+ may represent the real Treg cell population in patients with RA.
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Affiliation(s)
- Mengru Yang
- Division of Rheumatology, Department of Internal Medicine, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.,Center for Clinical Immunology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yan Liu
- Center for Clinical Immunology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Biyao Mo
- Division of Rheumatology, Department of Internal Medicine, Hainan General Hospital, Haikou, China
| | - Youqiu Xue
- Center for Clinical Immunology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Congxiu Ye
- Center for Clinical Immunology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yutong Jiang
- Division of Rheumatology, Department of Internal Medicine, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xuan Bi
- Division of Rheumatology, Department of Internal Medicine, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Meng Liu
- Division of Rheumatology, Department of Internal Medicine, Guangdong Second Provincial Central Hospital, Guangzhou, China
| | - Yunting Wu
- Center for Clinical Immunology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Julie Wang
- Division of Rheumatology, Department of Medicine, Penn State University Hershey College of Medicine, Hershey, PA, United States
| | - Nancy Olsen
- Division of Rheumatology, Department of Medicine, Penn State University Hershey College of Medicine, Hershey, PA, United States
| | - Yunfeng Pan
- Division of Rheumatology, Department of Internal Medicine, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China,
| | - Song Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, United States,
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17
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Göschl L, Scheinecker C, Bonelli M. Treg cells in autoimmunity: from identification to Treg-based therapies. Semin Immunopathol 2019; 41:301-314. [PMID: 30953162 DOI: 10.1007/s00281-019-00741-8] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/22/2019] [Indexed: 12/27/2022]
Abstract
Regulatory (Treg) cells are key regulators of inflammation and important for immune tolerance and homeostasis. A major progress has been made in the identification and classification of Treg cells. Due to technological advances, we have gained deep insights in the epigenetic regulation of Treg cells. The use of fate reporter mice allowed addressing the functional consequences of loss of Foxp3 expression. Depending on the environment Treg cells gain effector functions upon loss of Foxp3 expression. However, the traditional view that Treg cells become necessarily pathogenic by gaining effector functions was challenged by recent findings and supports the notion of Treg cell lineage plasticity. Treg cell stability is also a major issue for Treg cell therapies. Clinical trials are designed to use polyclonal Treg cells as therapeutic tools. Here, we summarize the role of Treg cells in selected autoimmune diseases and recent advances in the field of Treg targeted therapies.
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Affiliation(s)
- Lisa Göschl
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria
| | - Clemens Scheinecker
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria
| | - Michael Bonelli
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria.
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18
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Khalil F, Rafat MN, Lotfy A, Hemida MH, Sayed M, Attia M. Study of FoxP3+ CD4+ CD25+ in systemic lupus erythematosus and rheumatoid arthritis. THE EGYPTIAN JOURNAL OF INTERNAL MEDICINE 2018. [DOI: 10.4103/ejim.ejim_44_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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19
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Yokoyama Y, Iwasaki T, Kitano S, Satake A, Nomura S, Furukawa T, Matsui K, Sano H. IL-2-Anti-IL-2 Monoclonal Antibody Immune Complexes Inhibit Collagen-Induced Arthritis by Augmenting Regulatory T Cell Functions. THE JOURNAL OF IMMUNOLOGY 2018; 201:1899-1906. [PMID: 30143591 DOI: 10.4049/jimmunol.1701502] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 07/30/2018] [Indexed: 11/19/2022]
Abstract
IL-2 induces regulatory T cells (Tregs) and reduces disease severity, such as in graft-versus-host disease and systemic lupus erythematosus. To investigate the regulatory network of IL-2 in rheumatoid arthritis, we examined the effects of IL-2-anti-IL-2 mAb immune complexes (IL-2ICs) in a rheumatoid arthritis model of collagen-induced arthritis (CIA). CIA was induced in male DBA/1 mice by two immunizations with type II collagen at 3-wk intervals. IL-2ICs were prepared by mixing 5 μg of an anti-IL-2 mAb (clone JES6-1D) with 1 μg of mouse IL-2 and were injected i.p. every day for 3 d. Mouse paws were scored for arthritis using a macroscopic scoring system. Th1, Th2, Th17, and Tregs were analyzed by flow cytometry. Joint histopathology was examined by H&E and immunohistochemical staining. Treg functions were examined by studying in vitro suppression using flow cytometry. IL-2IC administration effectively elicited a 1.6-fold expansion of CD4+Foxp3+ Tregs in peripheral blood cells relative to that found in control mice. IL-2IC treatment significantly inhibited arthritis in CIA mice. Histopathological examination of joints revealed inhibited synovial cell proliferation and IL-17, IL-6, and TNF-α levels but increased Foxp3+ Tregs after IL-2IC treatment. Flow cytometric examination of spleen cells revealed reduced IFN-γ- and IL-17-producing cells and increased IL-10-producing Tregs after IL-2IC treatment. The suppressive activities of CD4+CD25+ Tregs induced by IL-2ICs were stronger than those in untreated mice. IL-2ICs inhibited arthritis by augmenting not only Treg numbers but also Treg functions, which play regulatory roles in autoimmune arthritis.
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Affiliation(s)
- Yuichi Yokoyama
- Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Tsuyoshi Iwasaki
- Department of Pharmacotherapy, School of Pharmacy, Hyogo University of Health Sciences, Chuo-ku, Kobe, Hyogo 650-8530, Japan; and
| | - Sachie Kitano
- Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Atsushi Satake
- First Department of Internal Medicine, Kansai Medical University, Hirakata, Osaka 573-1191, Japan
| | - Shosaku Nomura
- First Department of Internal Medicine, Kansai Medical University, Hirakata, Osaka 573-1191, Japan
| | - Tetsuya Furukawa
- Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Kiyoshi Matsui
- Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Hajime Sano
- Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
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20
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Miao J, Zhu P. Functional Defects of Treg Cells: New Targets in Rheumatic Diseases, Including Ankylosing Spondylitis. Curr Rheumatol Rep 2018; 20:30. [PMID: 29663162 DOI: 10.1007/s11926-018-0729-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE OF REVIEW This study aims to review the advances of Treg cell biology, the functional defects of Treg cells, and the potential strategies for the experimental, preclinical or clinical application of Treg cell therapy in the context of autoimmune/immune-mediated rheumatic diseases. RECENT FINDINGS CD4+CD25+ regulatory T (Treg) cells are a phenotypically and functionally heterogeneous subset of lymphocytes that prevent a variety of autoimmune diseases. As in many autoimmune diseases, the functional defects of Treg cells are supposed to play relevant roles in the pathogenesis and development of systemic lupus erythematosus, rheumatoid arthritis, ankylosing spondylitis, and other autoimmune/immune-mediated rheumatic diseases. Consequently, manipulation and modulation of Treg cells represent a potent strategy for therapeutic benefit in many such diseases. A further understanding of the functional defects of Treg cells in rheumatic diseases will contribute to find new targets and therapies in rheumatic diseases, including ankylosing spondylitis.
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Affiliation(s)
- Jinlin Miao
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 West Changle Road, Xi'an, 710032, Shaanxi Province, People's Republic of China
| | - Ping Zhu
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 West Changle Road, Xi'an, 710032, Shaanxi Province, People's Republic of China.
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21
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Protective Effect of Norcantharidin on Collagen-Induced Arthritis Rats. Chin J Integr Med 2017; 24:278-283. [DOI: 10.1007/s11655-017-2792-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Indexed: 10/18/2022]
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22
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Buondonno I, Rovera G, Sassi F, Rigoni MM, Lomater C, Parisi S, Pellerito R, Isaia GC, D’Amelio P. Vitamin D and immunomodulation in early rheumatoid arthritis: A randomized double-blind placebo-controlled study. PLoS One 2017; 12:e0178463. [PMID: 28582403 PMCID: PMC5459341 DOI: 10.1371/journal.pone.0178463] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Accepted: 05/12/2017] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to evaluate differences in T helper cell sub-types and osteoclast (OCs) precursors in peripheral blood between patients affected by early rheumatoid arthritis (eRA) and healthy controls. The effect of administration of cholecalcipherol on clinical and laboratory parameters was subsequently evaluated, by a parallel, randomized double blind, placebo controlled trial. Thirty nine eRA patients and 31 age-matched controls were enrolled and compared for levels of 25OH vitamin D, T helper cell sub-types, OCs precursors including both classical and non-classical and pro-inflammatory cytokines at baseline. Eligible patients were female ≥18 years of age with a diagnosis of RA, as defined by the American College of Rheumatology 2010 criteria for <6 months prior to inclusion in the study. Patients with auto-immune or inflammatory diseases other than RA were excluded. Patients treated with glucocorticoids (GCs), disease modifying activity drugs and biologic agents within the past 6 months were also excluded. In the second phase of the study, eRA patients were randomly assigned to standard treatment with methotrexate (MTX) and GCs with (21) or without (18) cholecalcipherol (300,000 IU) and followed for 3 months; the randomization was done by computer generated tables to allocate treatments. Three patients didn’t come back to the follow up visit for personal reasons. None of the patients experienced adverse events. The main outcome measures were T cells phenotypes, OCs precursors and inflammatory cytokines. Secondary outcome measure were clinical parameters. In eRA, 25OH vitamin D levels were significantly lower. CD4+/IFNγ+,CD4+/IL4+, CD4+/IL17A+ and CD4+IL17A+IFNγ+, cells were increased in eRA as well as non-classical OCs precursors, whereas T regulatory cells were not altered. TNFα, TGFβ1, RANKL, IL-23 and IL-6 were increased in eRA. Non-classical OCs, IL-23 and IL-6 correlated with disease severity and activity. Standard treatment with MTX and GC ameliorated clinical symptoms and reduced IL-23, whereas it did not affect CD4+ cells sub-sets nor OCs precursors. After 3 months, the combined use of cholecalcipherol significantly ameliorated the effect of treatment on global health. In eRA, a significant imbalance in T CD4+ sub-types accompanied by increased levels of non-classical OCs precursors and pro-inflammatory cytokines was observed. A single dose of cholecalcipherol (300,000 IU) combined with standard treatment significantly ameliorates patients general health.
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Affiliation(s)
- Ilaria Buondonno
- Department of Medical Science, Gerontology and Bone Metabolic Disease Section, University of Torino, Torino, Italy
| | - Guido Rovera
- Rheumatology Unit, Ospedale Mauriziano, Torino, Italy
| | - Francesca Sassi
- Department of Medical Science, Gerontology and Bone Metabolic Disease Section, University of Torino, Torino, Italy
| | - Micol Maria Rigoni
- Department of Medical Science, Gerontology and Bone Metabolic Disease Section, University of Torino, Torino, Italy
| | | | - Simone Parisi
- Rheumatology Department, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | | | - Giovanni Carlo Isaia
- Department of Medical Science, Gerontology and Bone Metabolic Disease Section, University of Torino, Torino, Italy
| | - Patrizia D’Amelio
- Department of Medical Science, Gerontology and Bone Metabolic Disease Section, University of Torino, Torino, Italy
- * E-mail:
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Naciute M, Maciunaite G, Mieliauskaite D, Rugiene R, Zinkeviciene A, Mauricas M, Murovska M, Girkontaite I. Increased Numbers of CD4 +CD25 + and CD8 +CD25 + T-Cells in Peripheral Blood of Patients with Rheumatoid Arthritis with Parvovirus B19 Infection. ACTA ACUST UNITED AC 2017; 31:181-185. [PMID: 28358698 DOI: 10.21873/invivo.11043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 12/14/2022]
Abstract
AIM To investigate T-cell subpopulations in peripheral blood of human parvovirus B19 DNA-positive (B19+) and -negative (B19-) patients with rheumatoid arthritis (RA) and healthy persons. PATIENTS AND METHODS Blood samples were collected from 115 patients with RA and 47 healthy volunteers; 27 patients with RA and nine controls were B19+ Cluster of differentiation (CD) 4, 8, 25 and 45RA were analyzed on blood cells. CD25 expression on CD4+CD45RA+, CD4+CD45RA-, CD8+CD45RA+, CD8+CD45RA- subsets were analyzed by flow cytometry. RESULTS The percentage of CD25low and CD25hi cells was increased on CD4+CD45RA+, CD4+CD45RA- T-cells and the percentage of CD25+ cells was increased on CD8+CD45RA+, CD8+CD45RA- T-cells of B19+ patients with RA in comparison with B19- patients and controls. CONCLUSION Raised levels of CD4 and CD8 regulatory T-cells in B19+ RA patients could cause down-regulation of antiviral clearance mechanisms and lead to activation of persistent human parvovirus B19 infection in patients with RA.
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Affiliation(s)
- Milda Naciute
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Gabriele Maciunaite
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Diana Mieliauskaite
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Rita Rugiene
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania.,Centre of Rheumatology, Vilnius University, Vilnius, Lithuania
| | - Aukse Zinkeviciene
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Mykolas Mauricas
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Modra Murovska
- A. Kirchenstein Institute of Microbiology and Virology, Riga Stradins University, Riga, Latvia
| | - Irute Girkontaite
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
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Peng YF, Wang JL, Pan GG. The correlation of serum bilirubin levels with disease activity in patients with rheumatoid arthritis. Clin Chim Acta 2017; 469:187-190. [PMID: 28410854 DOI: 10.1016/j.cca.2017.04.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 03/23/2017] [Accepted: 04/10/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND We investigated the relationship between serum bilirubin and disease activity in patients with rheumatoid arthritis (RA). METHODS We included a total of 173 consecutive RA patients without steroid treatment and 346 healthy subjects; the disease activity score in 28 joints (DAS28) was used to assess disease activity in patients with RA. RESULTS Serum bilirubin concentrations were significantly lower in RA patients than in controls. Serum bilirubin was found to be negatively correlated with C-reactive protein (CRP) concentration and erythrocyte sedimentation rate (ESR) (r=-0.165, P=0.030; r=-192, P=0.012) in patients with RA. There was a negative correlation between the serum bilirubin and DAS28 score (r=-0.331, P<0.001). Serum bilirubin was independently associated with the DAS28 score (b=-0.225, P=0.001) in the multiple linear regression analysis. CONCLUSIONS Serum bilirubin concentrations are lower in patients with RA compared to controls and correlate with disease activity in patients with RA.
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Affiliation(s)
- You-Fan Peng
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
| | - Jun-Li Wang
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Guo-Gang Pan
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
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Anti-Arthritic Activity of Schistosoma mansoni and Trichinella spiralis Derived-Antigens in Adjuvant Arthritis in Rats: Role of FOXP3+ Treg Cells. PLoS One 2016; 11:e0165916. [PMID: 27802332 PMCID: PMC5089557 DOI: 10.1371/journal.pone.0165916] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 10/19/2016] [Indexed: 12/16/2022] Open
Abstract
A growing body of evidence supports the concept of helminths therapy in a variety of autoimmune diseases. Here, we aimed to investigate the protective effects of autoclaved Schistosoma mansoni antigen (ASMA) and Trichinella spiralis antigen (ATSA) on the clinical and immunopathological features of rheumatoid arthritis (RA). Adjuvant arthritis was induced by subcutaneous and intradermal injections of complete Freund’s adjuvant into the plantar surface of the right hind paw and the root of the tail, respectively. Rats were randomly assigned to serve as normal control, untreated arthritis, ASMA or ATSA-treated arthritis groups. Antigens were given by intradermal injection in two doses, two weeks apart. The development, progression of arthritic features, and the impact on animals’ gait and body weight were followed up for 4 weeks. The associated changes in serum cytokines (IL-17, IFN-γ and IL-10), joints’ histopathology and immunohistochemistry of Foxp3+ T regulatory cells (Tregs) were evaluated at the end of the study. Treatment with either ASMA or ATSA attenuated the progression of clinical features of polyarthritis, improved gait and body weight gain, reduced the elevated serum IL-17 and further increased both IFN-γ and IL-10. Histopathologically, this was associated with a remarkable regression of paws’ inflammation that was limited only to the subcutaneous tissue, and a significant increase in the number of Foxp 3+ cells versus the untreated arthritis group. In conclusion, both Schistosoma mansoni and Trichinella spiralis derived antigens exerted protective effect against adjuvant arthritis with better effect achieved by ASMA treatment. This anti-arthritic activity is attributed to upregulation of the Foxp3+ Tregs, with subsequent favorable modulation of both pro- and anti-inflammatory cytokines. The use of autoclaved parasitic antigens excludes the deleterious effects of imposing helminthic infection by using live parasites, which may pave the way to a new therapeutic modality in treating RA.
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Morita T, Shima Y, Wing JB, Sakaguchi S, Ogata A, Kumanogoh A. The Proportion of Regulatory T Cells in Patients with Rheumatoid Arthritis: A Meta-Analysis. PLoS One 2016; 11:e0162306. [PMID: 27622457 PMCID: PMC5021283 DOI: 10.1371/journal.pone.0162306] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 08/19/2016] [Indexed: 11/26/2022] Open
Abstract
Background Regulatory T cells (Tregs) have important functions in peripheral immune tolerance. Dysfunction of Tregs is considered to be a pivotal cause of autoimmune diseases, including rheumatoid arthritis (RA). However, previous reports describing the proportion of Tregs among CD4+ T cells in RA patients were controversial because a range of markers are used to identify Tregs with little consensus. To clarify the status of Tregs in RA, we investigated the proportion of Tregs with focusing on the definitions of them. Methods We identified the studies reporting the proportion of Tregs in RA patients using PubMed and Google Scholar. We performed a systematic review of them and a meta-analysis to evaluate the proportion of Tregs (FOXP3-positive and/or CD25-positive) among CD4+ T cells in peripheral blood (PB) and synovial fluid (SF) of RA patients and control subjects. Results A total 31 studies were selected. The proportion of Tregs defined by all definitions among CD4+ T cells in PB was not significantly different between RA patients and control subjects (-0.65, [-1.30, 0.01]). Then we performed sub-analyses based on individual definitions. The proportion of Tregs defined by either CD25 or FOXP3 alone did not differ between RA patients and control subjects. The proportion of Tregs defined by both FOXP3 and CD25 was lower in RA patients than that in control subjects (-2.42 [-3.49, -1.34]). The proportion of Tregs defined by both FOXP3 and CD25 was higher in SF than that in PB among RA patients (3.27 [0.40, 6.14]). Conclusion The status of Tregs varied according to the definition system. The proportion of Tregs defined by stricter and functionally validated methods decreased in PB and increased in SF among RA patients. If the proportion of Tregs differs in RA, accurate and functionally relevant definitions of Tregs are necessary to elucidate their status in RA.
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Affiliation(s)
- Takayoshi Morita
- Department of Respiratory Medicine, Allergy and Rheumatic diseases, Osaka University Graduate School of Medicine, Osaka, Japan
- Department of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Yoshihito Shima
- Department of Respiratory Medicine, Allergy and Rheumatic diseases, Osaka University Graduate School of Medicine, Osaka, Japan
| | - James Badger Wing
- Department of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Shimon Sakaguchi
- Department of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Atsushi Ogata
- Department of Respiratory Medicine, Allergy and Rheumatic diseases, Osaka University Graduate School of Medicine, Osaka, Japan
- Division of Allergy, Rheumatology and Connective tissue disease, NTT west Osaka Hospital, Osaka, Japan
- * E-mail:
| | - Atsushi Kumanogoh
- Department of Respiratory Medicine, Allergy and Rheumatic diseases, Osaka University Graduate School of Medicine, Osaka, Japan
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Barberá A, Lorenzo N, van Kooten P, van Roon J, de Jager W, Prada D, Gómez J, Padrón G, van Eden W, Broere F, Del Carmen Domínguez M. APL1, an altered peptide ligand derived from human heat-shock protein 60, increases the frequency of Tregs and its suppressive capacity against antigen responding effector CD4 + T cells from rheumatoid arthritis patients. Cell Stress Chaperones 2016; 21:735-44. [PMID: 27241313 PMCID: PMC4908004 DOI: 10.1007/s12192-016-0698-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/29/2016] [Accepted: 05/04/2016] [Indexed: 12/29/2022] Open
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by a chronic relapsing-remitting joint inflammation. Perturbations in the balance between CD4 + T cells producing IL-17 and CD4 + CD25(high)FoxP3 + Tregs correlate with irreversible bone and cartilage destruction in RA. APL1 is an altered peptide ligand derived from a CD4+ T-cell epitope of human HSP60, an autoantigen expressed in the inflamed synovium, which increases the frequency of CD4 + CD25(high)FoxP3+ Tregs in peripheral blood mononuclear cells from RA patients. The aim of this study was to evaluate the suppressive capacity of Tregs induced by APL1 on proliferation of effector CD4+ T cells using co-culture experiments. Enhanced Treg-mediated suppression was observed in APL1-treated cultures compared with cells cultured only with media. Subsequent analyses using autologous cross-over experiments showed that the enhanced Treg suppression in APL1-treated cultures could reflect increased suppressive function of Tregs against APL1-responsive T cells. On the other hand, APL1-treatment had a significant effect reducing IL-17 levels produced by effector CD4+ T cells. Hence, this peptide has the ability to increase the frequency of Tregs and their suppressive properties whereas effector T cells produce less IL-17. Thus, we propose that APL1 therapy could help to ameliorate the pathogenic Th17/Treg balance in RA patients.
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Affiliation(s)
- Ariana Barberá
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 11300, Cuba
- Department of Medicine, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Noraylis Lorenzo
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 11300, Cuba
| | - Peter van Kooten
- Infectious Diseases and Immunology Department, Faculty of Veterinary Medicine, University of Utrecht, P.O. Box 80165, NL-3508 TD, Utrecht, The Netherlands
| | - Joel van Roon
- Department of Rheumatology and Clinical and Laboratory of Translational Immunology, University Medical Centrum Utrecht, PO Box 85500, 3508 GA, Utrecht, The Netherlands
| | - Wilco de Jager
- Department of Pediatric Immunology and Laboratory of Translational Immunology, University Medical Center Utrecht, PO Box 85500, 3508 GA, Utrecht, The Netherlands
| | - Dinorah Prada
- Institute of Rheumatology, Ave 10 of October, No. 130, Havana, Cuba
| | - Jorge Gómez
- Institute of Rheumatology, Ave 10 of October, No. 130, Havana, Cuba
| | - Gabriel Padrón
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 11300, Cuba
| | - Willem van Eden
- Infectious Diseases and Immunology Department, Faculty of Veterinary Medicine, University of Utrecht, P.O. Box 80165, NL-3508 TD, Utrecht, The Netherlands
| | - Femke Broere
- Infectious Diseases and Immunology Department, Faculty of Veterinary Medicine, University of Utrecht, P.O. Box 80165, NL-3508 TD, Utrecht, The Netherlands
| | - María Del Carmen Domínguez
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 11300, Cuba.
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D'Amelio P, Sassi F. Osteoimmunology: from mice to humans. BONEKEY REPORTS 2016; 5:802. [PMID: 27195109 DOI: 10.1038/bonekey.2016.29] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 04/02/2016] [Indexed: 12/15/2022]
Abstract
The immune system has been recognized as one of the most important regulators of bone turnover and its deregulation is implicated in several bone diseases such as postmenopausal osteoporosis and inflammatory bone loss; recently it has been suggested that the gut microbiota may influence bone turnover by modulation of the immune system. The study of the relationship between the immune system and bone metabolism is generally indicated under the term 'osteoimmunology'. The vast majority of these studies have been performed in animal models; however, several data have been confirmed in humans as well: this review summarizes recent data on the relationship between the immune system and bone with particular regard to the data confirmed in humans.
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Affiliation(s)
- Patrizia D'Amelio
- Department of Medical Science-Section of Gerontology-University of Torino , Torino, Italy
| | - Francesca Sassi
- Department of Medical Science-Section of Gerontology-University of Torino , Torino, Italy
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Smirnova SJ, Sidorova JV, Tsvetaeva NV, Nikulina OF, Biderman BV, Nikulina EE, Kulikov SM, Sudarikov AB. Expansion of CD8+ cells in autoimmune hemolytic anemia. Autoimmunity 2016; 49:147-54. [DOI: 10.3109/08916934.2016.1138219] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Regulatory Effect of Iguratimod on the Balance of Th Subsets and Inhibition of Inflammatory Cytokines in Patients with Rheumatoid Arthritis. Mediators Inflamm 2015; 2015:356040. [PMID: 26713003 PMCID: PMC4680115 DOI: 10.1155/2015/356040] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 10/26/2015] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To expand upon the role of iguratimod (T-614) in the treatment of rheumatoid arthritis (RA), we investigated whether the Th1, Th17, follicular helper T cells (Tfh), and regulatory T cells (Treg) imbalance could be reversed by iguratimod and the clinical implications of this reversal. METHODS In this trial, 74 patients were randomized into iguratimod-treated (group A) and control (broup B) group for a 24-week treatment period. In the subsequent 28 weeks, both groups were given iguratimod. Frequencies of Th1, Th17, Tfh, and Treg were quantified using flow cytometry, and serum cytokines were detected by enzyme-linked immunosorbent assay. mRNA expression of cytokines and transcriptional factor were quantified by RT-PCR. The composite Disease Activity Score, erythrocyte sedimentation rate, and C-reactive protein were assessed at each visit. RESULT The clinical scores demonstrated effective suppression of disease after treatment with iguratimod. In addition, iguratimod downregulated Th1, Th17-type response and upregulated Treg. Furthermore, the levels of Th1, Th17, and Tfh associated inflammatory cytokines and transcription factors were reduced after treatment with iguratimod, while the levels of Treg associated cytokines and transcription factors were increased.
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31
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Basdeo SA, Moran B, Cluxton D, Canavan M, McCormick J, Connolly M, Orr C, Mills KHG, Veale DJ, Fearon U, Fletcher JM. Polyfunctional, Pathogenic CD161+ Th17 Lineage Cells Are Resistant to Regulatory T Cell-Mediated Suppression in the Context of Autoimmunity. THE JOURNAL OF IMMUNOLOGY 2015; 195:528-40. [PMID: 26062995 DOI: 10.4049/jimmunol.1402990] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 05/13/2015] [Indexed: 01/15/2023]
Abstract
In autoimmune diseases such as rheumatoid arthritis (RA), regulatory T cells (Tregs) fail to constrain autoimmune inflammation; however, the reasons for this are unclear. We investigated T cell regulation in the RA joint. Tregs from RA synovial fluid suppressed autologous responder T cells; however, when compared with Tregs from healthy control peripheral blood, they were significantly less suppressive. Despite their reduced suppressive activity, Tregs in the RA joint were highly proliferative and expressed FOXP3, CD39, and CTLA-4, which are markers of functional Tregs. This suggested that the reduced suppression is due to resistance of RA synovial fluid responder T cells to Treg inhibition. CD161(+) Th17 lineage cells were significantly enriched in the RA joint; we therefore investigated their relative susceptibility to Treg-mediated suppression. Peripheral blood CD161(+) Th cells from healthy controls were significantly more resistant to Treg-mediated suppression, when compared with CD161(-) Th cells, and this was mediated through a STAT3-dependant mechanism. Furthermore, depletion of CD161(+) Th cells from the responder T cell population in RA synovial fluid restored Treg-mediated suppression. In addition, CD161(+) Th cells exhibited pathogenic features, including polyfunctional proinflammatory cytokine production, an ability to activate synovial fibroblasts, and to survive and persist in the inflamed and hypoxic joint. Because CD161(+) Th cells are known to be enriched at sites of autoinflammation, our finding that they are highly proinflammatory and resistant to Treg-mediated suppression suggests an important pathogenic role in RA and other autoimmune diseases.
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Affiliation(s)
- Sharee A Basdeo
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Barry Moran
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Deborah Cluxton
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Mary Canavan
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Jennifer McCormick
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Mary Connolly
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Carl Orr
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Kingston H G Mills
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Douglas J Veale
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Ursula Fearon
- Department of Rheumatology, Dublin Academic Medical Centre, St. Vincent's University Hospital, Dublin 4, Ireland; and
| | - Jean M Fletcher
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
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Altered immunoregulation in rheumatoid arthritis: the role of regulatory T cells and proinflammatory Th17 cells and therapeutic implications. Mediators Inflamm 2015; 2015:751793. [PMID: 25918479 PMCID: PMC4397010 DOI: 10.1155/2015/751793] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/16/2015] [Accepted: 03/17/2015] [Indexed: 12/29/2022] Open
Abstract
In recent years several studies investigated the role of T lymphocyte subpopulations in the pathogenesis of rheumatoid arthritis (RA). Pathogenic Th17 cells mediate pannus growth, osteoclastogenesis, and synovial neoangiogenesis; hence they are key players in the development of the disease. On the other hand, regulatory T (Treg) cells are a T cell subset whose peculiar function is to suppress autoreactive lymphocytes. The imbalance between Th17 and Treg cells has been identified as a crucial event in the pathogenesis of RA. In addition, the effects of currently employed RA therapeutic strategies on these lymphocyte subpopulations have been extensively investigated. This review article aims to discuss current knowledge on Treg and Th17 cells in RA and possible implications of their therapeutic targeting in this disorder.
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Inactivation of Notch signaling reverses the Th17/Treg imbalance in cells from patients with immune thrombocytopenia. J Transl Med 2015; 95:157-67. [PMID: 25485537 DOI: 10.1038/labinvest.2014.142] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 08/01/2014] [Accepted: 08/20/2014] [Indexed: 11/08/2022] Open
Abstract
T helper 17 (Th17) cells and regulatory T (Treg) cells, along with Th1 and Th2 cells, may contribute to the development of immune thrombocytopenia (ITP). The imbalance of Th17/Treg toward Th17 cells has been shown to play a pivotal role in the peripheral immune response. Notch signaling has been implicated in peripheral T-cell activation and effector cell differentiation. However, the role of Th17/Treg in the pathogenesis of ITP and the effect of Notch signaling on Th17/Treg imbalances remain largely elusive in ITP. In vitro, we treated peripheral blood mononuclear cells (PBMCs) from ITP and healthy controls with γ-secretase inhibitor (DAPT). Th17 cells and Treg cells were measured by flow cytometry and IL-17, IL-21, and IL-10 secretion by enzyme immunoassay technique. The mRNA expression of Ntoch1, Hes1, Hey1, RORγt, and Foxp3 was investigated by RT-PCR. Cell proliferation and apoptosis were determined by the Cell Counting Kit-8 and apoptosis detection kit. We demonstrated that DAPT was effective in inhibiting mRNA expression of Notch signaling molecules. In untreated cultured PBMCs from ITP patients, we observed elevated Th17 cell and IL-21 levels and RORγt mRNA expression, decreased Treg cells and Foxp3 mRNA expression, and an increased ratio of Th17/Treg and RORγt/Foxp3. After inactivating Notch signal by DAPT, Th17 cells and Th17/Treg ratio were dose dependently decreased and accompanied by the reduction of IL-17 in culture supernatants and RORγt mRNA expression in ITP patients. However, no significant difference was found for Treg cells and Foxp3 mRNA expression, RORγt/Foxp3 ratio, and IL-21 and IL-10 levels after DAPT treatment in ITP patients. We also present evidence that the effect of DAPT inhibition on the Th17 cell response was associated with downregulation of RORγt and IL-17 transcription using human in vitro polarization. In conclusion, our findings highlight the importance of Notch signaling in Th17/Treg imbalances in ITP. Inactivation of Notch signaling might be a potential immunoregulatory strategy in ITP patients.
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Al-Zifzaf DS, El Bakry SA, Mamdouh R, Shawarby LA, Ghaffar AYA, Amer HA, Alim AA, Sakr HM, Rahman RA. FoxP3+T regulatory cells in Rheumatoid arthritis and the imbalance of the Treg/TH17 cytokine axis. EGYPTIAN RHEUMATOLOGIST 2015. [DOI: 10.1016/j.ejr.2014.06.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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van der Geest KSM, Smigielska-Czepiel K, Park JA, Abdulahad WH, Kim HW, Kroesen BJ, van den Berg A, Boots AMH, Lee EB, Brouwer E. SF Treg cells transcribing high levels of Bcl-2 and microRNA-21 demonstrate limited apoptosis in RA. Rheumatology (Oxford) 2014; 54:950-8. [DOI: 10.1093/rheumatology/keu407] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Indexed: 11/14/2022] Open
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Thyroid dysfunction in systemic lupus erythematosus and rheumatoid arthritis: Its impact as a cardiovascular risk factor. EGYPTIAN RHEUMATOLOGIST 2014. [DOI: 10.1016/j.ejr.2013.12.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Scally SW, Petersen J, Law SC, Dudek NL, Nel HJ, Loh KL, Wijeyewickrema LC, Eckle SBG, van Heemst J, Pike RN, McCluskey J, Toes RE, La Gruta NL, Purcell AW, Reid HH, Thomas R, Rossjohn J. A molecular basis for the association of the HLA-DRB1 locus, citrullination, and rheumatoid arthritis. ACTA ACUST UNITED AC 2013; 210:2569-82. [PMID: 24190431 PMCID: PMC3832918 DOI: 10.1084/jem.20131241] [Citation(s) in RCA: 290] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Rheumatoid arthritis (RA) is strongly associated with the human leukocyte antigen (HLA)-DRB1 locus that possesses the shared susceptibility epitope (SE) and the citrullination of self-antigens. We show how citrullinated aggrecan and vimentin epitopes bind to HLA-DRB1*04:01/04. Citrulline was accommodated within the electropositive P4 pocket of HLA-DRB1*04:01/04, whereas the electronegative P4 pocket of the RA-resistant HLA-DRB1*04:02 allomorph interacted with arginine or citrulline-containing epitopes. Peptide elution studies revealed P4 arginine-containing peptides from HLA-DRB1*04:02, but not from HLA-DRB1*04:01/04. Citrullination altered protease susceptibility of vimentin, thereby generating self-epitopes that are presented to T cells in HLA-DRB1*04:01(+) individuals. Using HLA-II tetramers, we observed citrullinated vimentin- and aggrecan-specific CD4(+) T cells in the peripheral blood of HLA-DRB1*04:01(+) RA-affected and healthy individuals. In RA patients, autoreactive T cell numbers correlated with disease activity and were deficient in regulatory T cells relative to healthy individuals. These findings reshape our understanding of the association between citrullination, the HLA-DRB1 locus, and T cell autoreactivity in RA.
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Affiliation(s)
- Stephen W Scally
- Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia
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Deficient or abundant but unable to fight? Estimation of circulating FoxP3+ T regulatory cells and their counteracting FoxP3− in rheumatoid arthritis and correlation with disease activity. EGYPTIAN RHEUMATOLOGIST 2013. [DOI: 10.1016/j.ejr.2013.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Spoerl D, Duroux-Richard I, Louis-Plence P, Jorgensen C. The role of miR-155 in regulatory T cells and rheumatoid arthritis. Clin Immunol 2013; 148:56-65. [PMID: 23649045 DOI: 10.1016/j.clim.2013.03.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/20/2013] [Accepted: 03/21/2013] [Indexed: 10/27/2022]
Abstract
Recently, various micro(mi)RNAs have been found deregulated in the setting of rheumatoid arthritis (RA), but their role in the pathogenesis of this disease remains a matter of debate. In the meanwhile, increasing evidence indicates a defective function of regulatory T cells (Tregs) in RA. This review discusses relevant studies addressing the function of Tregs and Cytotoxic T-Lymphocyte Antigen 4 in RA, provides recent data on the role of miRNAs for Tregs homeostasis, and focuses on the role of miR-155 in Tregs. In a final perspective section we discuss the potential impact of therapeutic miR-155 modulation in RA.
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Affiliation(s)
- D Spoerl
- Inserm U844, CHU Saint Eloi, INM, 80 rue Augustin Fliche, 34295 Montpellier cedex 5, France.
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Carvalheiro H, da Silva JAP, Souto-Carneiro MM. Potential roles for CD8+ T cells in rheumatoid arthritis. Autoimmun Rev 2013; 12:401-9. [DOI: 10.1016/j.autrev.2012.07.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 07/18/2012] [Indexed: 02/06/2023]
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The role of different subsets of regulatory T cells in immunopathogenesis of rheumatoid arthritis. ARTHRITIS 2012; 2012:805875. [PMID: 23133752 PMCID: PMC3486158 DOI: 10.1155/2012/805875] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 09/11/2012] [Accepted: 09/20/2012] [Indexed: 02/07/2023]
Abstract
Rheumatoid arthritis (RA) is a common autoimmune disease and a systemic inflammatory disease which is characterized by chronic joint inflammation and variable degrees of bone and cartilage erosion and hyperplasia of synovial tissues. Considering the role of autoreactive T cells (particularly Th1 and Th17 cells) in pathophysiology of RA, it might be assumed that the regulatory T cells (Tregs) will be able to control the initiation and progression of disease. The frequency, function, and properties of various subsets of Tregs including natural Tregs (nTregs), IL-10-producing type 1 Tregs (Tr1 cells), TGF-β-producing Th3 cells, CD8+ Tregs, and NKT regulatory cells have been investigated in various studies associated with RA and collagen-induced arthritis (CIA) as experimental model of this disease. In this paper, we intend to submit the comprehensive information about the immunobiology of various subsets of Tregs and their roles and function in immunopathophysiology of RA and its animal model, CIA.
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Yakimchuk K, Nandakumar KS, Chen L, Holmdahl R, Okret S, Jondal M. Keratinocyte growth factor (KGF) delays the onset of collagen-induced arthritis. Autoimmunity 2012; 45:510-5. [PMID: 22849314 DOI: 10.3109/08916934.2012.712169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Keratinocyte growth factor (KGF) is a member of the fibroblast growth factor family. KGF protects the oral and intestinal mucosa against damage induced by irradiation or chemotherapy. Previous studies have found the expression of KGF in chondrocytes and suggested that KGF promotes the wound healing process in injured cartilage. KGF also has important effects on the immune system such as the regeneration of thymus tissue and the formation of regulatory T cells (T(reg)) in the periphery. AIM Here we investigated the effect of KGF on collagen type II induced arthritis (CIA) and anti-collagen antibody induced arthritis (CAIA) in order to discriminate between immunoregulatory effect and direct protective effect on chondrocytes. METHODS CIA was induced by immunization with CII and CAIA by treatment of mice with a cocktail of four different anti-CII antibodies. The effect of KGF on the thymus and spleen was analyzed by FACS and by immunohistochemistry. RESULTS We have found that KGF treatment delayed the onset of CIA but had no effect on CAIA. Our results show that KGF treatment leads both to an outflow of naïve T cells from the thymus and to a statistically significant increase in the percentage of CD4(+)Foxp3(+) T(regs) in the periphery. CONCLUSIONS We suggest that the effect of KGF on CIA depends on immunoregulatory mechanisms. KGF may delay the aging of the cellular immune system and thus improve the resilience of the immune system against autoimmune reactions.
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Affiliation(s)
- Konstantin Yakimchuk
- Department of Biosciences and Nutrition, Karolinska Institutet, NOVUM, Huddinge, Sweden.
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Rodriguez JP, Murphy MP, Hong S, Madrigal M, March KL, Minev B, Harman RJ, Chen CS, Timmons RB, Marleau AM, Riordan NH. Autologous stromal vascular fraction therapy for rheumatoid arthritis: rationale and clinical safety. Int Arch Med 2012; 5:5. [PMID: 22313603 PMCID: PMC3296619 DOI: 10.1186/1755-7682-5-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 02/08/2012] [Indexed: 02/08/2023] Open
Abstract
Advancements in rheumatoid arthritis (RA) treatment protocols and introduction of targeted biological therapies have markedly improved patient outcomes, despite this, up to 50% of patients still fail to achieve a significant clinical response. In veterinary medicine, stem cell therapy in the form of autologous stromal vascular fraction (SVF) is an accepted therapeutic modality for degenerative conditions with 80% improvement and no serious treatment associated adverse events reported. Clinical translation of SVF therapy relies on confirmation of veterinary findings in targeted patient populations. Here we describe the rationale and preclinical data supporting the use of autologous SVF in treatment of RA, as well as provide 1, 3, 6, and 13 month safety outcomes in 13 RA patients treated with this approach.
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Vinay DS, Kwon BS. Targeting TNF superfamily members for therapeutic intervention in rheumatoid arthritis. Cytokine 2011; 57:305-12. [PMID: 22209079 DOI: 10.1016/j.cyto.2011.12.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/02/2011] [Accepted: 12/06/2011] [Indexed: 01/12/2023]
Abstract
Rheumatoid arthritis (RA) is an inflammatory disease is one of the most serious medical problems, affecting ∼1% of all people worldwide, irrespective of race. The disease is autoimmune in nature and characterized by chronic inflammation of the synovial tissues in multiple joints that leads to joint destruction. Although T cells are central players in RA development, B cells are required for full penetrance of disease largely via their production of autoantibodies against Fc domain of IgG rheumatoid factor (RF). Treatment options for RA are limited and if any, are inadequate due to associated side effects. Members of the tumor necrosis factor (TNF) superfamily play important roles in a number of autoimmune diseases, including RA. In this review, we briefly summarize key features of the superfamily, we will consider how the well-characterized members concerned with immune regulation are coordinated and their roles in rheumatoid arthritis.
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Affiliation(s)
- Dass S Vinay
- Section of Clinical Immunology, Allergy, and Rheumatology, Department of Medicine, Tulane University Health Sciences Center, New Orleans, LA, USA
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Abstract
TNFα is a cytokine that is central to the pathogenesis of several autoimmune diseases. More specifically, the deleterious effects of TNFα in rheumatoid arthritis (RA) are well established. The proinflammatory influence of TNFα in RA is related both to direct effects mediated by the induction of other proinflammatory cytokines, metalloproteinases, and free radicals; and to modulation of the regulatory T cells (Tregs). Furthermore, the TNFα antagonists used to treat RA can induce the emergence of a distinctive Treg subpopulation. Nevertheless, a recent body of data suggests that TNFα may also exert anti-inflammatory effects, which may be mediated in part via Tregs. TNFα binds to the TNF receptor 2 expressed preferentially at the Treg surface, thereby activating and promoting the development of Tregs. Data from patients with RA and more recent evidence obtained in the absence of disease are consistent with a paradoxical effect of TNFα on Tregs. TNFα may have different effects on naturally occurring Tregs and induced Tregs.
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Fu LH, Ma CL, Cong B, Li SJ, Chen HY, Zhang JG. Hypomethylation of proximal CpG motif of interleukin-10 promoter regulates its expression in human rheumatoid arthritis. Acta Pharmacol Sin 2011; 32:1373-80. [PMID: 21986577 DOI: 10.1038/aps.2011.98] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
AIM The promoter of human interleukin-10 (IL10), a cytokine crucial for suppressing inflammation and regulating immune responses, contains an interspecies-conserved sequence with CpG motifs. The aim of this study was to investigate whether methylation of CpG motifs could regulate the expression of IL10 in rheumatoid arthritis (RA). METHODS Bioinformatic analysis was conducted to identify the interspecies-conserved sequence in human, macaque and mouse IL10 genes. Peripheral blood mononuclear cells (PBMCs) from 20 RA patients and 20 health controls were collected. The PBMCs from 6 patients were cultured in the presence or absence of 5-azacytidine (5 μmol/L). The mRNA and protein levels of IL10 were examined using RT-PCR and ELISA, respectively. The methylation of CpGs in the IL10 promoter was determined by pyrosequencing. Chromatin immunoprecipitation (ChIP) assays were performed to detect the cyclic AMP response element-binding protein (CREB)-DNA interactions. RESULTS One interspecies-conserved sequence was found within the IL10 promoter. The upstream CpGs at -408, -387, -385, and -355 bp were hypermethylated in PBMCs from both the RA patients and healthy controls. In contrast, the proximal CpG at -145 was hypomethylated to much more extent in the RA patients than in the healthy controls (P=0.016), which was correlated with higher IL10 mRNA and serum levels. In the 5-azacytidine-treated PBMCs, the CpG motifs were demethylated, and the expression levels of IL10 mRNA and protein was significantly increased. CHIP assays revealed increased phospho-CREB binding to the IL10 promoter. CONCLUSION The methylation of the proximal CpGs in the IL10 promoter may regulate gene transcription in RA.
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Current world literature. Curr Opin Rheumatol 2011; 23:317-24. [PMID: 21448013 DOI: 10.1097/bor.0b013e328346809c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gridley DS, Pecaut MJ. Genetic background and lymphocyte populations after total-body exposure to iron ion radiation. Int J Radiat Biol 2010; 87:8-23. [PMID: 21067301 DOI: 10.3109/09553002.2010.518203] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE Particle radiations could significantly impact astronaut health during space missions. This study quantified the effects of iron ion radiation on lymphocytes in two strains of mice differing in susceptibility to radiation-induced acute myeloid leukemia (AML) and thymic lymphoma (TL): C57BL/6 (AML resistant, TL sensitive) and CBA/Ca (AML sensitive, TL resistant). MATERIALS AND METHODS The animals (n = 60/strain) were irradiated with ⁵⁶Fe(26+) (1 GeV) to total doses of 0, 0.5, 2 and 3 Gray (Gy) at an average dose rate of 1 Gy/min and euthanised on days 4 and 30 thereafter; blood, spleen, and bone marrow were collected for flow cytometry analyses. Cells expressing the following molecules were quantified: Cluster of differentiation (CD) 4, CD8, CD25, CD34, CD71, B220 (isoform of CD45 on B cells), NK1.1 (marker on natural killer or NK cells, C57B mice), panNK (marker on NK cells, CBA mice), and Sca1 (stem cell antigen 1). RESULTS Exposure to radiation resulted in different distribution patterns in lymphocyte populations and leukocytes expressing activation and progenitor markers in the two mouse strains. Significant main effects were dependent upon strain, as well as radiation dose, body compartment, and time of assessment. Especially striking differences were noted on day 4 after 3 Gy irradiation, including in the CD4:CD8 ratio [blood, C57 (2.83 ± 0.25) vs. CBA (6.19 ± 0.24); spleen, C57 (2.29 ± 0.12) vs. CBA (4.98 ± 0.22)], %CD25(+) mononuclear cells in bone marrow [C57 (5.62 ± 1.19) vs. CBA (12.45 ± 0.93)] and %CD34(+)Sca1(+) cells in bone marrow [CD45¹° gate, C57 (2.72 ± 0.74) vs. CBA (21.44 ± 0.73)]. CONCLUSION The results show that genetic background, as well as radiation dose and time post-exposure, had a profound impact on lymphocyte populations, as well as other leukocytes, after exposure to iron ion radiation.
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Affiliation(s)
- Daila S Gridley
- Department of Radiation Medicine, Radiation Research Laboratories, Divisions of Microbiology & Biochemistry, Loma Linda University and Medical Center, Loma Linda, California 92354, USA.
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Hussain S, Kirwin SJ, Stohlman SA. Increased T regulatory cells lead to development of Th2 immune response in male SJL mice. Autoimmunity 2010; 44:219-28. [PMID: 20883149 DOI: 10.3109/08916934.2010.519746] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
SJL mice represent a mouse model in which young adult females are susceptible to autoimmune disease, while age-matched males are relatively resistant. T cells primed in female SJL mice secrete cytokines associated with a Th1 phenotype. By contrast, T cells primed in males secrete cytokines associated with a Th2 phenotype. Activation of Th2-type T cells in males vs. Th1 cells in females correlates with increased CD4(+)CD25(+) T regulatory cells (Treg) in males. T cells primed in males depleted of CD4(+)CD25(+) T cells preferentially secrete IFN-γ and decreased IL-4 and IL-10 compared to CD4(+)CD25(+) T-cell-sufficient males, suggesting that Treg influence subsequent antigen-specific cytokine secretion. Treg from males and females exhibit equivalent in vitro T-cell suppression. Treg from males express increased CTLA-4 and CD62L and preferentially secrete IL-10. These data suggest that an increased frequency of IL-10 secreting Treg in male SJL mice may contribute resistance to autoimmune disease by favoring the development of Th2 immune responses.
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Affiliation(s)
- Shabbir Hussain
- Department of Neurosciences, Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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