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Tian W, Qiu H, He Y, Zhang M, Pan X, Wang Y, Shi X, Wen C, Chen J. Qinghao-Biejia Herb Pair attenuates SLE atherosclerosis by regulating macrophage polarization via ABCA1/G1-mediated cholesterol efflux. JOURNAL OF ETHNOPHARMACOLOGY 2024; 334:118545. [PMID: 39002826 DOI: 10.1016/j.jep.2024.118545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/29/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Qinghao-Biejia herb pair (QB) is the core herb pair of "Jieduquyuziyin prescription" and is one of the commonly used herb pairs for the clinical treatment of systemic lupus erythematosus (SLE). Previous studies have shown that QB reduces the expression of inflammatory cytokines like IL-6 and TNF-α in the serum and kidney of MRL/lpr mice. Additionally, it inhibits the expression of TLR4 and MyD88 in the kidney and aorta and reduces the deposition of renal complement C3 and aortic plaque after treatment. These findings suggest that QB has a preventive and therapeutic effect on lupus rats. AIM OF THE STUDY This study sought to investigate the mechanisms underlying the anti-SLE combined with atherosclerosis activity of the Qinghao-Biejia herb pair. MATERIALS AND METHODS Drug targets for QB were identified using the HERB database, while targets associated with SLE and atherosclerosis were retrieved from the GeneCards database. The intersection of these drug and disease targets was then analyzed using a protein-protein interaction (PPI) network with GO and KEGG pathway enrichment analysis. In vivo, apolipoprotein E-deficient (ApoE-/-) mice were induced to develop SLE-AS by intraperitoneal injection of pristane and continued feeding of a high-fat diet. The changes in relevant indexes were observed after 12 weeks of gavage treatment with hydroxychloroquine, QB, Q (Qinghao alone), and B (Biejia alone). Bone marrow-derived macrophages from ApoE-/- mice and Raw 264.7 macrophages were used to explore the mechanisms of QB treatment. RESULTS The levels of inflammatory cytokines in serum and pathological liver changes in mice were improved to varying degrees in the treatment groups. Additionally, there was a reduction in aortic atheromatous plaque formation and some improvement in cholesterol efflux. Furthermore, QB suppressed the expression of inflammatory cytokines in M1 macrophages, suggesting a role in regulating macrophage polarization. CONCLUSION QB demonstrates clear efficacy for treating SLE-AS, and its therapeutic mechanism may involve the regulation of macrophage phenotypes by promoting cholesterol efflux.
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Affiliation(s)
- Weiyu Tian
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Haonan Qiu
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Yuanfang He
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Miao Zhang
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Xinyu Pan
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Yiqi Wang
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Xiaowei Shi
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China
| | - Chengping Wen
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China.
| | - Juan Chen
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China; Key Laboratory of Chinese medicine rheumatology of Zhejiang Province, Research Institute of Chinese Medical Clinical Foundation and Immunology, Hangzhou, China.
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Hasimu A, Bahabayi A, Xiong Z, Li Q, Zhang Z, Zeng X, Zheng M, Yuan Z, Liu C. SIT1 identifies circulating hypoactive T cells with elevated cytotoxic molecule secretion in systemic lupus erythematosus patients. Immunol Res 2024; 72:754-765. [PMID: 38691318 DOI: 10.1007/s12026-024-09481-w] [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: 03/02/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024]
Abstract
This study aims to elucidate the expression and functionality of SIT1 in circulating CD8/CD4 + T cells in humans and to delineate its significance in systemic lupus erythematosus (SLE) patients. We employed multiparametric flow cytometry to investigate the expression of SIT1 in circulating CD8/CD4 + T cells and their respective subsets, comparing healthy controls (HCs) with SLE patients. Furthermore, we assessed the levels of granzyme B, perforin, IL-17, and IFN-γ in SIT1-related CD8/CD4 + T cells from both HCs and SLE patients, both before and after PMA stimulation. Clinically, we conducted receiver operating characteristic curve analysis and correlation analysis to evaluate the clinical relevance of SIT1-related CD8/CD4 + T cells in SLE patients. SIT1 exhibited higher expression in CD4 + T cells, with SIT1 - T cells demonstrating elevated levels of granzyme B, perforin, and IFN-γ compared to SIT1 + T cells. PMA-stimulated T cells exhibited reduced SIT1 expression compared to unstimulated T cells. SLE patients displayed increased SIT1 + proportions in CD8 + T cells and decreased SIT1 + CD4 + T cell numbers. Additionally, SIT1 + cells in SLE patients exhibited significantly higher levels of granzyme B and perforin compared to HCs. SIT1 + cells demonstrated significant associations with clinical indicators in SLE patients, with indicators related to SIT1 proving valuable in the diagnosis of SLE patients. SIT1 is inversely correlated with T cell activation. In SLE patients, SIT1 expression is altered in T cells concomitant with an augmented secretion of cytotoxic molecules. This upregulation may contribute to the pathogenesis of SLE and enhance its diagnostic potential.
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Affiliation(s)
- Ainizati Hasimu
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Ayibaota Bahabayi
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Ziqi Xiong
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Qi Li
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Zhonghui Zhang
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Xingyue Zeng
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China
| | - Mohan Zheng
- School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Zihang Yuan
- School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Chen Liu
- Department of Clinical Laboratory, Peking University People's Hospital, 11# Xizhimen South Street, Beijing, China.
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3
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Soul J, Carlsson E, Hofmann SR, Russ S, Hawkes J, Schulze F, Sergon M, Pablik J, Abraham S, Hedrich CM. Tissue gene expression profiles and communication networks inform candidate blood biomarker identification in psoriasis and atopic dermatitis. Clin Immunol 2024; 265:110283. [PMID: 38880200 DOI: 10.1016/j.clim.2024.110283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/24/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Overlapping clinical and pathomechanistic features can complicate the diagnosis and treatment of inflammatory skin diseases, including psoriasis and atopic dermatitis (AD). Spatial transcriptomics allows the identification of disease- and cell-specific molecular signatures that may advance biomarker development and future treatments. This study identified transcriptional signatures in keratinocytes and sub-basal CD4+ and CD8+ T lymphocytes from patients with psoriasis and AD. In silico prediction of ligand:receptor interactions delivered key signalling pathways (interferon, effector T cells, stroma cell and matrix biology, neuronal development, etc.). Targeted validation of selected transcripts, including CCL22, RELB, and JUND, in peripheral blood T cells suggests the chosen approach as a promising tool also in other inflammatory diseases. Psoriasis and AD are characterized by transcriptional dysregulation in T cells and keratinocytes that may be targeted therapeutically. Spatial transcriptomics is a valuable tool in the search for molecular signatures that can be used as biomarkers and/or therapeutic targets.
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Affiliation(s)
- J Soul
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - E Carlsson
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - S R Hofmann
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - S Russ
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - J Hawkes
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - F Schulze
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - M Sergon
- Institut of Pathology, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - J Pablik
- Institut of Pathology, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - S Abraham
- Department of Dermatology, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - C M Hedrich
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, United Kingdom.
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4
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Liu L, Nguyen H, Das U, Ogunsola S, Yu J, Lei L, Kung M, Pejhan S, Rastegar M, Xie J. Epigenetic control of adaptive or homeostatic splicing during interval-training activities. Nucleic Acids Res 2024; 52:7211-7224. [PMID: 38661216 PMCID: PMC11229381 DOI: 10.1093/nar/gkae311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/03/2024] [Accepted: 04/14/2024] [Indexed: 04/26/2024] Open
Abstract
Interval-training activities induce adaptive cellular changes without altering their fundamental identity, but the precise underlying molecular mechanisms are not fully understood. In this study, we demonstrate that interval-training depolarization (ITD) of pituitary cells triggers distinct adaptive or homeostatic splicing responses of alternative exons. This occurs while preserving the steady-state expression of the Prolactin and other hormone genes. The nature of these splicing responses depends on the exon's DNA methylation status, the methyl-C-binding protein MeCP2 and its associated CA-rich motif-binding hnRNP L. Interestingly, the steady expression of the Prolactin gene is also reliant on MeCP2, whose disruption leads to exacerbated multi-exon aberrant splicing and overexpression of the hormone gene transcripts upon ITD, similar to the observed hyperprolactinemia or activity-dependent aberrant splicing in Rett Syndrome. Therefore, epigenetic control is crucial for both adaptive and homeostatic splicing and particularly the steady expression of the Prolactin hormone gene during ITD. Disruption in this regulation may have significant implications for the development of progressive diseases.
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Affiliation(s)
- Ling Liu
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Hai Nguyen
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Urmi Das
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Samuel Ogunsola
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Jiankun Yu
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Lei Lei
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Matthew Kung
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Shervin Pejhan
- Biochemistry & Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Mojgan Rastegar
- Biochemistry & Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Jiuyong Xie
- Department of Physiology & Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
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Deng T, Wang Z, Geng Q, Wang Z, Jiao Y, Diao W, Xu J, Deng T, Luo J, Tao Q, Xiao C. Methylation of T and B Lymphocytes in Autoimmune Rheumatic Diseases. Clin Rev Allergy Immunol 2024; 66:401-422. [PMID: 39207646 DOI: 10.1007/s12016-024-09003-4] [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] [Accepted: 08/15/2024] [Indexed: 09/04/2024]
Abstract
The role of abnormal epigenetic modifications, particularly DNA methylation, in the pathogenesis of autoimmune rheumatic diseases (ARDs) has garnered increasing attention. Lymphocyte dysfunction is a significant contributor to the pathogenesis of ARDs. Methylation is crucial for maintaining normal immune system function, and aberrant methylation can hinder lymphocyte differentiation, resulting in functional abnormalities that disrupt immune tolerance, leading to the excessive expression of inflammatory cytokines, thereby exacerbating the onset and progression of ARDs. Recent studies suggest that methylation-related factors have the potential to serve as biomarkers for monitoring the activity of ARDs. This review summarizes the current state of research on the impact of DNA and RNA methylation on the development, differentiation, and function of T and B cells and examines the progress of these epigenetic modifications in studies of six specific ARDs: systemic lupus erythematosus, rheumatoid arthritis, Sjögren's syndrome, systemic sclerosis, juvenile idiopathic arthritis, and ankylosing spondylitis. Additionally, we propose that exploring the interplay between RNA methylation and DNA methylation may represent a novel direction for understanding the pathogenesis of ARDs and developing novel treatment strategies.
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Affiliation(s)
- Tiantian Deng
- Beijing University of Chinese Medicine, School of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Zihan Wang
- Beijing University of Chinese Medicine, School of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Qishun Geng
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Zhaoran Wang
- Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yi Jiao
- Beijing University of Chinese Medicine, School of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Wenya Diao
- Beijing University of Chinese Medicine, School of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Jiahe Xu
- China-Japan Friendship Hospital, Peking University, Beijing, 100029, China
| | - Tingting Deng
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Jing Luo
- Department of TCM Rheumatology, China-Japan Friendship Hospital, Beijing, 100029, China.
| | - Qingwen Tao
- Department of TCM Rheumatology, China-Japan Friendship Hospital, Beijing, 100029, China.
| | - Cheng Xiao
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, 100029, China.
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Thomas R, Klaus T. The role of cAMP dependent gene transcription in lupus pathophysiology. Clin Immunol 2024; 262:110179. [PMID: 38460896 DOI: 10.1016/j.clim.2024.110179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 03/11/2024]
Abstract
T lymphocytes play a major role in the pathophysiology of systemic lupus erythematosus. T cellular dysregulation includes significant alterations in signal transduction, cytokine production and metabolic pathways. The cAMP dependent transcription factors like CREB and CREM exert pleiotropic functions as they are critically involved in epigenetic conformational changes and gene regulation of different key effector cytokines in CD4+ T cells including that of IL2, IL17 and IL21 genes. In the present review we review current knowledge on altered expression and function of these factors in T cells that promote autoimmunity in SLE patients.
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Affiliation(s)
- Rauen Thomas
- RWTH Aachen University, Dept. of Rheumatology, Germany
| | - Tenbrock Klaus
- RWTH Aachen University, Translational Pediatric Rheumatology and Immunology, Germany; Department of Paediatrics, Inselspital University of Bern, Pediatric Rheumatology, Switzerland.
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7
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Koga T. Understanding the pathogenic significance of altered calcium-calmodulin signaling in T cells in autoimmune diseases. Clin Immunol 2024; 262:110177. [PMID: 38460894 DOI: 10.1016/j.clim.2024.110177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/22/2024] [Accepted: 02/28/2024] [Indexed: 03/11/2024]
Abstract
Calcium/calmodulin-dependent protein kinase IV (CaMK4) serves as a pivotal mediator in the regulation of gene expression, influencing the activity of transcription factors within a variety of immune cells, including T cells. Altered CaMK4 signaling is implicated in autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, and psoriasis, which are characterized by dysregulated immune responses and clinical complexity. These conditions share common disturbances in immune cell functionality, cytokine production, and autoantibody generation, all of which are associated with disrupted calcium-calmodulin signaling. This review underscores the consequences of dysregulated CaMK4 signaling across these diseases, with an emphasis on its impact on Th17 differentiation and T cell metabolism-processes central to maintaining immune homeostasis. A comprehensive understanding of roles of CaMK4 in gene regulation across various autoimmune disorders holds promise for the development of targeted therapies, particularly for diseases driven by Th17 cell dysregulation.
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Affiliation(s)
- Tomohiro Koga
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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Wang H, Chu Z, Ni T, Chen D, Dai X, Jiang W, Sunagawa M, Liu Y. Effect and mechanism of aqueous extract of Chinese herbal prescription (TFK) in treating gout arthritis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 321:117527. [PMID: 38056535 DOI: 10.1016/j.jep.2023.117527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 11/07/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE With the rapid development of China's economic level, great changes have taken place in people's diet structure, gout has become a common disease that puzzles people's health, seriously affects the realization of China's "Healthy China" strategic goal. Gouty arthritis (GA) is a common joint disease caused by chronic purine metabolism disorder. Currently, drugs used to treat GA are allopurinol and colchicine. However, these drugs can only temporarily relieve the clinical symptoms of GA with significant side effects. More and more basic and clinical studies have confirmed that Traditional Chinese medicine has definite curative effect on GA. AIM OF THE STUDY To elucidate the potential molecular mechanism of Tongfengkang (TFK) in the treatment of GA, and to provide experimental basis for the search and development of efficient and low-toxicity Chinese medicine for GA treatment. MATERIALS AND METHODS Aqueous extract of TFK (AETFK) were determined by liquid phase high resolution mass spectrometry and the possible effective constituents were screened out. Acute GA model rats were established to detect the anti-inflammatory and detumification effects of AETFK on GA and explore the potential mechanism. The effect of AETFK on serum uric acid and urinary uric acid levels in acute GA rats was determined by automatic biochemical analyzer, and the effect of AETFK on the expression of acute GA-related immunoinflammatory factors were determined by protein thermal fluorescence chip. The effect of AETFK on the concentration of neutrophils in the joint fluid of acute GA rats were determined by Reichs-Giemsa staining. The effect of AETFK on macrophage activation was detected by ELISA. In order to further investigate the mechanism of AETFK in the treatment of GA, a rat model of hyperuricemia was established to detect the effect of AETFK on the level of uric acid in hyperuricemia model rats. Biochemical indexes of liver and kidney and hematoxylin-eosin staining (HE) were used to evaluate the effects of AETFK on the organs, and to preliminatively evaluate the safety of ventilation confufang. RESULTS Compared with the model group, the joint swelling degree of GA rats in AETFK treatment group were significantly reduced, and the levels of blood uric acid and urine uric acid were also significantly decreased. Protein thermal fluorescence microarray results showed that the levels of gout - related inflammatory factors in GA rats in AETFK treatment group were significantly lower than those in control group. Reichsen-giemsa staining and ELISA showed that AETFK could reduce the activation of macrophages and the accumulation of neutrophils in the joint fluid. The results of liver and kidney biochemical indexes and HE staining showed that no obvious tissue damage was observed in the organs of rats treated with AETFK. CONCLUSIONS AETFK not only has significant anti-inflammatory effects on GA, but also can significantly reduce the level of blood uric acid in GA rats, without obvious toxic and side effects. These effects may be related to AETFK's inhibition of neutrophil enrichment and macrophage activation during early inflammation.
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Affiliation(s)
- Haibo Wang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, China.
| | - Zewen Chu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, China.
| | - Tengyang Ni
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, China.
| | - Dawei Chen
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), NHC Key Lab of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing, 100022, China.
| | - Xiaojun Dai
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China.
| | - Wei Jiang
- College of Environmental Science & Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China.
| | - Masataka Sunagawa
- Department of Physiology, School of Medicine, Showa University, Tokyo, 142, Japan.
| | - Yanqing Liu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, China.
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9
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Zhang Y, Maskan Bermudez N, Sa B, Maderal AD, Jimenez JJ. Epigenetic mechanisms driving the pathogenesis of systemic lupus erythematosus, systemic sclerosis and dermatomyositis. Exp Dermatol 2024; 33:e14986. [PMID: 38059632 DOI: 10.1111/exd.14986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/27/2023] [Accepted: 11/08/2023] [Indexed: 12/08/2023]
Abstract
Autoimmune connective tissue disorders, including systemic lupus erythematosus, systemic sclerosis (SSc) and dermatomyositis (DM), often manifest with debilitating cutaneous lesions and can result in systemic organ damage that may be life-threatening. Despite recent therapeutic advancements, many patients still experience low rates of sustained remission and significant treatment toxicity. While genetic predisposition plays a role in these connective tissue disorders, the relatively low concordance rates among monozygotic twins (ranging from approximately 4% for SSc to about 11%-50% for SLE) have prompted increased scrutiny of the epigenetic factors contributing to these diseases. In this review, we explore some seminal studies and key findings to provide a comprehensive understanding of how dysregulated epigenetic mechanisms can contribute to the development of SLE, SSc and DM.
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Affiliation(s)
- Yusheng Zhang
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Narges Maskan Bermudez
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Brianna Sa
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Andrea D Maderal
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Joaquin J Jimenez
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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París-Muñoz A, León-Triana O, Pérez-Martínez A, Barber DF. Helios as a Potential Biomarker in Systemic Lupus Erythematosus and New Therapies Based on Immunosuppressive Cells. Int J Mol Sci 2023; 25:452. [PMID: 38203623 PMCID: PMC10778776 DOI: 10.3390/ijms25010452] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
The Helios protein (encoded by the IKZF2 gene) is a member of the Ikaros transcription family and it has recently been proposed as a promising biomarker for systemic lupus erythematosus (SLE) disease progression in both mouse models and patients. Helios is beginning to be studied extensively for its influence on the T regulatory (Treg) compartment, both CD4+ Tregs and KIR+/Ly49+ CD8+ Tregs, with alterations to the number and function of these cells correlated to the autoimmune phenomenon. This review analyzes the most recent research on Helios expression in relation to the main immune cell populations and its role in SLE immune homeostasis, specifically focusing on the interaction between T cells and tolerogenic dendritic cells (tolDCs). This information could be potentially useful in the design of new therapies, with a particular focus on transfer therapies using immunosuppressive cells. Finally, we will discuss the possibility of using nanotechnology for magnetic targeting to overcome some of the obstacles related to these therapeutic approaches.
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Affiliation(s)
- Andrés París-Muñoz
- Department of Immunology and Oncology and NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB-CSIC), 28049 Madrid, Spain;
- Translational Research in Pediatric Oncology, Hematopoietic Transplantation and Cell Therapy, IdiPAZ, Hospital Universitario La Paz, 28049 Madrid, Spain; (O.L.-T.); (A.P.-M.)
- IdiPAZ-CNIO Pediatric Onco-Hematology Clinical Research Unit, Spanish National Cancer Research Centre (CNIO), 28049 Madrid, Spain
| | - Odelaisy León-Triana
- Translational Research in Pediatric Oncology, Hematopoietic Transplantation and Cell Therapy, IdiPAZ, Hospital Universitario La Paz, 28049 Madrid, Spain; (O.L.-T.); (A.P.-M.)
- IdiPAZ-CNIO Pediatric Onco-Hematology Clinical Research Unit, Spanish National Cancer Research Centre (CNIO), 28049 Madrid, Spain
| | - Antonio Pérez-Martínez
- Translational Research in Pediatric Oncology, Hematopoietic Transplantation and Cell Therapy, IdiPAZ, Hospital Universitario La Paz, 28049 Madrid, Spain; (O.L.-T.); (A.P.-M.)
- IdiPAZ-CNIO Pediatric Onco-Hematology Clinical Research Unit, Spanish National Cancer Research Centre (CNIO), 28049 Madrid, Spain
| | - Domingo F. Barber
- Department of Immunology and Oncology and NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB-CSIC), 28049 Madrid, Spain;
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Carlsson E, Cowell-McGlory T, Hedrich CM. cAMP responsive element modulator α promotes effector T cells in systemic autoimmune diseases. Immunology 2023; 170:470-482. [PMID: 37435993 DOI: 10.1111/imm.13680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/01/2023] [Indexed: 07/13/2023] Open
Abstract
T lymphocytes play a crucial role in adaptive immunity. Dysregulation of T cell-derived inflammatory cytokine expression and loss of self-tolerance promote inflammation and tissue damage in several autoimmune/inflammatory diseases, including systemic lupus erythematosus (SLE) and psoriasis. The transcription factor cAMP responsive element modulator α (CREMα) plays a key role in the regulation of T cell homeostasis. Increased expression of CREMα is a hallmark of the T cell-mediated inflammatory diseases SLE and psoriasis. Notably, CREMα regulates the expression of effector molecules through trans-regulation and/or the co-recruitment of epigenetic modifiers, including DNA methyltransferases (DNMT3a), histone-methyltransferases (G9a) and histone acetyltransferases (p300). Thus, CREMα may be used as a biomarker for disease activity and/or target for future targeted therapeutic interventions.
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Affiliation(s)
- Emil Carlsson
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Taylor Cowell-McGlory
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
- Department of Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
- Paediatric Excellence Initiative, NIHR Great Ormond Street Biomedical Research Centre, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
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12
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Gao X, Huang X, Wang Y, Sun S, Chen T, Gao Y, Zhang X. Global research hotspots and frontier trends of epigenetic modifications in autoimmune diseases: A bibliometric analysis from 2012 to 2022. Medicine (Baltimore) 2023; 102:e35221. [PMID: 37773838 PMCID: PMC10545364 DOI: 10.1097/md.0000000000035221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/23/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Recent studies have shown substantial progress in understanding the association between epigenetics and autoimmune diseases. However, there is a lack of comprehensive bibliometric analysis in this research area. This article aims to present the current status and hot topics of epigenetic research in autoimmune diseases (ADs) from a bibliometric perspective, as well as explore the frontier hotspots and trends in epigenetic studies related to ADs. METHODS This study collected 1870 epigenetic records related to autoimmune diseases from the web of science core collection database, spanning from 2012 to 2022. Analysis of regions, institutions, journals, authors, and keywords was conducted using CiteSpace, VOSviewer, and the R package "bibliometrix" to predict the latest trends in epigenetic research relevant to autoimmune diseases. RESULTS The number of epigenetic publications related to autoimmune diseases has been increasing annually. The United States has played a major role in this field, contributing over 45.9% of publications and leading in terms of publication volume and citation counts. Central South University emerged as the most active institution, contributing the highest number of publications. Frontiers in Immunology is the most popular journal in this field, publishing the most articles, while the Journal of Autoimmunity is the most co-cited journal. Lu QJ is the most prolific author, and Zhao M is the most frequently co-cited author. "Immunology" serves as a broad representative of epigenetic research in ADs. Hot topics in the field of epigenetic modifications associated with autoimmune diseases include "regulatory T cells (Treg)," "rheumatoid arthritis," "epigenetic regulation," "cAMPresponsive element modulator alpha," "cell-specific enhancer," "genetic susceptibility," and "systemic lupus erythematosus." Furthermore, the study discusses the frontiers and existing issues of epigenetic modifications in the development of autoimmune diseases. CONCLUSIONS This study provides a comprehensive overview of the knowledge structure and developmental trends in epigenetic research related to autoimmune diseases over the past 11 years.
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Affiliation(s)
- Xiang Gao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Xin Huang
- Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Yehui Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Sheng Sun
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Tao Chen
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Yongxiang Gao
- International Education College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - Xiaodan Zhang
- Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
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13
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Sánchez-Jasso DE, López-Guzmán SF, Bermúdez-Cruz RM, Oviedo N. Novel Aspects of cAMP-Response Element Modulator (CREM) Role in Spermatogenesis and Male Fertility. Int J Mol Sci 2023; 24:12558. [PMID: 37628737 PMCID: PMC10454534 DOI: 10.3390/ijms241612558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Spermatogenesis is a very complex process with an intricate transcriptional regulation. The transition from the diploid to the haploid state requires the involvement of specialized genes in meiosis, among other specific functions for the formation of the spermatozoon. The transcription factor cAMP-response element modulator (CREM) is a key modulator that triggers the differentiation of the germ cell into the spermatozoon through the modification of gene expression. CREM has multiple repressor and activator isoforms whose expression is tissue-cell-type specific and tightly regulated by various factors at the transcriptional, post-transcriptional and post-translational level. The activator isoform CREMτ controls the expression of several relevant genes in post-meiotic stages of spermatogenesis. In addition, exposure to xenobiotics negatively affects CREMτ expression, which is linked to male infertility. On the other hand, antioxidants could have a positive effect on CREMτ expression and improve sperm parameters in idiopathically infertile men. Therefore, CREM expression could be used as a biomarker to detect and even counteract male infertility. This review examines the importance of CREM as a transcription factor for sperm production and its relevance in male fertility, infertility and the response to environmental xenobiotics that may affect CREMτ expression and the downstream regulation that alters male fertility. Also, some health disorders in which CREM expression is altered are discussed.
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Affiliation(s)
- Diego Eduardo Sánchez-Jasso
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Sergio Federico López-Guzmán
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Rosa Maria Bermúdez-Cruz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City 07360, Mexico; (D.E.S.-J.); (S.F.L.-G.); (R.M.B.-C.)
| | - Norma Oviedo
- Unidad de Investigación Médica en Immunología e Infectología, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social (IMSS), Mexico City 02990, Mexico
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14
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Park JS, Perl A. Endosome Traffic Modulates Pro-Inflammatory Signal Transduction in CD4 + T Cells-Implications for the Pathogenesis of Systemic Lupus Erythematosus. Int J Mol Sci 2023; 24:10749. [PMID: 37445926 DOI: 10.3390/ijms241310749] [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: 05/05/2023] [Revised: 06/10/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Endocytic recycling regulates the cell surface receptor composition of the plasma membrane. The surface expression levels of the T cell receptor (TCR), in concert with signal transducing co-receptors, regulate T cell responses, such as proliferation, differentiation, and cytokine production. Altered TCR expression contributes to pro-inflammatory skewing, which is a hallmark of autoimmune diseases, such as systemic lupus erythematosus (SLE), defined by a reduced function of regulatory T cells (Tregs) and the expansion of CD4+ helper T (Th) cells. The ensuing secretion of inflammatory cytokines, such as interferon-γ and interleukin (IL)-4, IL-17, IL-21, and IL-23, trigger autoantibody production and tissue infiltration by cells of the adaptive and innate immune system that induce organ damage. Endocytic recycling influences immunological synapse formation by CD4+ T lymphocytes, signal transduction from crosslinked surface receptors through recruitment of adaptor molecules, intracellular traffic of organelles, and the generation of metabolites to support growth, cytokine production, and epigenetic control of DNA replication and gene expression in the cell nucleus. This review will delineate checkpoints of endosome traffic that can be targeted for therapeutic interventions in autoimmune and other disease conditions.
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Affiliation(s)
- Joy S Park
- Department of Medicine, Norton College of Medicine, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
- Department of Biochemistry and Molecular Biology, Norton College of Medicine, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
| | - Andras Perl
- Department of Medicine, Norton College of Medicine, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
- Department of Biochemistry and Molecular Biology, Norton College of Medicine, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
- Department of Microbiology and Immunology, Norton College of Medicine, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
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15
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Smith EMD, Lythgoe H, Hedrich CM. Current views on lupus in children. Curr Opin Rheumatol 2023; 35:68-81. [PMID: 36286724 DOI: 10.1097/bor.0000000000000913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE OF REVIEW This manuscript provides an update on clinical and pathophysiological features of juvenile-onset systemic lupus erythematosis (jSLE), challenges applying adult-derived classification criteria, and recent advances in treatment and care. RECENT FINDINGS Significant scientific advances have improved the understanding of genetic factors (both genetic causes and risk alleles) and associated phenotypic features. Panels of urine/blood biomarker candidates aid in diagnosing jSLE, monitoring disease activity and predicting treatment response. Available classification criteria have been extensively assessed, with differences in clinical and immunological phenotypes of patients across age groups and ethnicities affecting their performance in jSLE. Therapeutic options remain limited and are based on protocols for adult-onset SLE patients. International efforts to inform development of a treat-to-target (T2T) approach for jSLE have yielded cohort-level evidence that target attainment reduces the risk of severe flare and new damage, and treatment compliance. SUMMARY Recent studies have significantly improved our understanding of jSLE pathogenesis, highlighting important differences between jSLE and adult SLE, and providing the basis of biomarker development and target-directed individualized treatment and care. Future work focused on development of a T2T approach in jSLE is eagerly awaited.
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Affiliation(s)
- Eve M D Smith
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool
| | - Hanna Lythgoe
- Department of Paediatric Rheumatology, Manchester Children's NHS Foundation Trust, Manchester, UK
| | - Christian M Hedrich
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool
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Yang Y, Yan C, Yu L, Zhang X, Shang J, Fan J, Zhang R, Ren J, Duan X. The star target in SLE: IL-17. Inflamm Res 2023; 72:313-328. [PMID: 36538077 DOI: 10.1007/s00011-022-01674-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/30/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
PURPOSE The purpose of this review is to discuss the significance of IL-17 in SLE and the potential of IL-17-targeted therapy. BACKGROUND Systemic lupus erythematosus (SLE) is an autoimmune disease that can affect many organs and tissues throughout the body. It is characterized by overactive B and T cells and loss of immune tolerance to autoantigens. Interleukin-17 (IL-17) is a cytokine that promotes inflammation and has been implicated in the pathogenesis of several autoimmune diseases as well as inflammatory diseases. In in vitro cellular experiments in lupus susceptible mice or SLE patients, there is substantial evidence that IL-17 is a highly promising therapeutic target. METHODS We searched papers from PubMed database using the search terms, such as interleukin-17, systemic lupus erythematosus, treatment targets, T cells, lupus nephritis, and other relevant terms. RESULTS We discuss in this paper the molecular mechanisms of IL-17 expression, Th17 cell proliferation, and the relationship between IL-17 and Th17. The significance of IL-17 in SLE and the potential of IL-17-targeted therapy are further discussed in detail. CONCLUSION IL-17 has a very high potential for the development as a star target in SLE.
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Affiliation(s)
- Yi Yang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chen Yan
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Le Yu
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiuling Zhang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jingjing Shang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jie Fan
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rongwei Zhang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jie Ren
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xinwang Duan
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
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Luo S, Zhang H, Xie Y, Huang J, Luo D, Zhang Q. Decreased SUV39H1 at the promoter region leads to increased CREMα and accelerates autoimmune response in CD4 + T cells from patients with systemic lupus erythematosus. Clin Epigenetics 2022; 14:181. [PMID: 36536372 PMCID: PMC9764740 DOI: 10.1186/s13148-022-01411-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Overproduction of cAMP-responsive element modulator α (CREMα) in total T cells from patients with systemic lupus erythematosus (SLE) can inhibit IL-2 and increase IL-17A. These ultimately promote progression of SLE. This study aims to investigate the expression of CREMα in SLE CD4+ T cells and find out the mechanisms for the regulation of CREMα in SLE CD4+ T cells. RESULTS CREMα mRNA was overexpressed in CD4+ T cells from SLE patients. The levels of histone H3 lysine 9 trimethylation (H3K9me3) and suppressor of variation 3-9 homolog 1 (SUV39H1) at the CREMα promoter of SLE CD4+ T cells were markedly decreased. Down-regulating SUV39H1 in normal CD4+ T cells elevated the levels of CREMα, IL-17A, and histone H3 lysine 4 trimethylation (H3K4me3) in the CREMα promoter region, and lowered IL-2, H3K9me3, DNA methylation, and DNA methyltransferase 3a (DNMT3a) enrichments within the CREMα promoter, while no sharp change in SET domain containing 1 (Set1) at the CREMα promoter. Up-regulating SUV39H1 in SLE CD4+ T cells had the opposite effects. The DNA methylation and DNMT3a levels were obviously reduced, and H3K4me3 enrichment was greatly increased at the CREMα promoter of CD4+ T cells from SLE patients. The Set1 binding in the CREMα promoter region upgraded significantly, and knocking down Set1 in SLE CD4+ T cells alleviated the H3K4me3 enrichment within this region, suppressed CREMα and IL-17A productions, and promoted the levels of IL-2, CREMα promoter DNA methylation, and DNMT3a. But there were no obviously alterations in H3K9me3 and SUV39H1 amounts in the region after transfection. CONCLUSIONS Decreased SUV39H1 in the CREMα promoter region of CD4+ T cells from SLE patients contributes to under-expression of H3K9me3 at this region. In the meantime, the Set1 binding at the CREMα promoter of SLE CD4+ T cells is up-regulated. As a result, DNMT3a and DNA methylation levels alleviate, and H3K4me3 binding increases. All these lead to overproduction of CREMα. Thus, the secretion of IL-2 down-regulates and the concentration of IL-17A up-regulates, ultimately promoting SLE.
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Affiliation(s)
- Shuangyan Luo
- grid.216417.70000 0001 0379 7164Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, 410011 Hunan People’s Republic of China
| | - Huilin Zhang
- grid.216417.70000 0001 0379 7164Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, 410011 Hunan People’s Republic of China
| | - Yuming Xie
- grid.216417.70000 0001 0379 7164Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, 410011 Hunan People’s Republic of China
| | - Junke Huang
- grid.216417.70000 0001 0379 7164Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, 410011 Hunan People’s Republic of China
| | - Danhong Luo
- Department of Dermatology, The Fifth People’s Hospital of Hainan Province, #49 Longkun South Rd, Haikou, 570206 Hainan People’s Republic of China
| | - Qing Zhang
- grid.216417.70000 0001 0379 7164Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, 410011 Hunan People’s Republic of China
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18
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Ohmes J, Comdühr S, Akbarzadeh R, Riemekasten G, Humrich JY. Dysregulation and chronicity of pathogenic T cell responses in the pre-diseased stage of lupus. Front Immunol 2022; 13:1007078. [PMID: 36389689 PMCID: PMC9650673 DOI: 10.3389/fimmu.2022.1007078] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/18/2022] [Indexed: 08/10/2023] Open
Abstract
In the normal immune system, T cell activation is tightly regulated and controlled at several levels to ensure that activation occurs in the right context to prevent the development of pathologic conditions such as autoimmunity or other harmful immune responses. CD4+FoxP3+ regulatory T cells (Treg) are crucial for the regulation of T cell responses in the peripheral lymphatic organs and thus for the prevention and control of autoimmunity. In systemic lupus erythematosus (SLE), a prototypic systemic autoimmune disease with complex etiology, a disbalance between Treg and pathogenic effector/memory CD4+ T cells develops during disease progression indicating that gradual loss of control over T cell activation is an important event in the immune pathogenesis. This progressive failure to adequately regulate the activation of autoreactive T cells facilitates chronic activation and effector/memory differentiation of pathogenic T cells, which are considered to contribute significantly to the induction and perpetuation of autoimmune processes and tissue inflammation in SLE. However, in particular in humans, little is known about the factors which drive the escape from immune regulation and the chronicity of pathogenic T cell responses in an early stage of autoimmune disease when clinical symptoms are still unapparent. Here we briefly summarize important findings and discuss current views and models on the mechanisms related to the dysregulation of T cell responses which promotes chronicity and pathogenic memory differentiation with a focus on the early stage of disease in lupus-prone individuals.
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Affiliation(s)
| | | | | | | | - Jens Y. Humrich
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
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19
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Hisada R, Yoshida N, Orite SYK, Umeda M, Burbano C, Scherlinger M, Kono M, Krishfield S, Tsokos GC. Role of Glutaminase 2 in Promoting CD4+ T Cell Production of Interleukin-2 by Supporting Antioxidant Defense in Systemic Lupus Erythematosus. Arthritis Rheumatol 2022; 74:1204-1210. [PMID: 35254008 PMCID: PMC10938244 DOI: 10.1002/art.42112] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/11/2022] [Accepted: 03/03/2022] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Glutaminase (GLS) isoenzymes GLS1 and GLS2 catalyze the first step of glutaminolysis. GLS1 is requisite for Th17 cell differentiation, and its inhibition suppresses autoimmune disease in animals, but the function of GLS2 is not known. The aim of this study was to investigate the role of GLS2 in CD4+ T cell function and systemic lupus erythematosus (SLE) pathogenesis. METHODS We measured reactive oxygen species (ROS) levels, lipid peroxidation, and mitochondrial mass and polarization by flow cytometry, interleukin-2 (IL-2) production by a dual luciferase assay, and CpG DNA methylation of Il2 by a real-time polymerase chain reaction system. The impact of the overexpression of wild-type GLS1, wild-type GLS2, or mutated GLS2 at the PDZ domain-binding motif in CD4+ T cells was examined. Furthermore, GLS2 expression in CD4+ T cells from lupus-prone mice and patients with SLE was analyzed by Western blotting. RESULTS GLS2, but not GLS1, reduced ROS levels and lipid peroxidation and restored mitochondrial function in T cells. GLS2 promoted IL-2 production through the demethylation of the Il2 promoter. Mutation of the PDZ domain-binding motif abated the ability of GLS2 to regulate IL-2 and ROS levels. In lupus-prone mice and patients with SLE, the expression of GLS2 was decreased in CD4+ T cells. Finally, GLS2 overexpression corrected ROS levels and restored IL-2 production by CD4+ T cells from lupus-prone mice and SLE patients. CONCLUSION Our findings suggest that GLS2 has a crucial role in IL-2 production by CD4+ T cells by supporting antioxidant defense, and they offer a new approach to correcting IL-2 production by T cells in SLE.
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Affiliation(s)
- Ryo Hisada
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Nobuya Yoshida
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Seo Yeon K Orite
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Masataka Umeda
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Catalina Burbano
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Marc Scherlinger
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Michihito Kono
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Suzanne Krishfield
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - George C Tsokos
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
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20
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The deacetylase SIRT2 contributes to autoimmune disease pathogenesis by modulating IL-17A and IL-2 transcription. Cell Mol Immunol 2022; 19:738-750. [PMID: 35523941 DOI: 10.1038/s41423-022-00874-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 04/13/2022] [Indexed: 12/14/2022] Open
Abstract
Aberrant IL-17A expression together with reduced IL-2 production by effector CD4+ T cells contributes to the pathogenesis of systemic lupus erythematosus (SLE). Here, we report that Sirtuin 2 (SIRT2), a member of the family of NAD+-dependent histone deacetylases, suppresses IL-2 production by CD4+ T cells while promoting their differentiation into Th17 cells. Mechanistically, we show that SIRT2 is responsible for the deacetylation of p70S6K, activation of the mTORC1/HIF-1α/RORγt pathway and induction of Th17-cell differentiation. Additionally, SIRT2 was shown to be responsible for the deacetylation of c-Jun and histones at the Il-2 gene, resulting in decreased IL-2 production. We found that the transcription factor inducible cAMP early repressor (ICER), which is overexpressed in T cells from people with SLE and lupus-prone mice, bound directly to the Sirt2 promoter and promoted its transcription. AK-7, a SIRT2 inhibitor, limited the ability of adoptively transferred antigen-specific CD4+ T cells to cause autoimmune encephalomyelitis in mice and limited disease in lupus-prone MRL/lpr mice. Finally, CD4+ T cells from SLE patients exhibited increased expression of SIRT2, and pharmacological inhibition of SIRT2 in primary CD4+ T cells from patients with SLE attenuated the ability of these cells to differentiate into Th17 cells and promoted the generation of IL-2-producing T cells. Collectively, these results suggest that SIRT2-mediated deacetylation is essential in the aberrant expression of IL-17A and IL-2 and that SIRT2 may be a promising molecular target for new SLE therapies.
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21
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A Mechanistic Insight into the Pathogenic Role of Interleukin 17A in Systemic Autoimmune Diseases. Mediators Inflamm 2022; 2022:6600264. [PMID: 35620115 PMCID: PMC9129985 DOI: 10.1155/2022/6600264] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/04/2022] [Accepted: 04/25/2022] [Indexed: 12/13/2022] Open
Abstract
Interleukin 17A (IL-17A) has been put forward as a strong ally in our fight against invading pathogens across exposed epithelial surfaces by serving an antimicrobial immunosurveillance role in these tissues to protect the barrier integrity. Amongst other mechanisms that prevent tissue injury mediated by potential microbial threats and promote restoration of epithelial homeostasis, IL-17A attracts effector cells to the site of inflammation and support the host response by driving the development of ectopic lymphoid structures. Accumulating evidence now underscores an integral role of IL-17A in driving the pathophysiology and clinical manifestations in three potentially life-threatening autoimmune diseases, namely, systemic lupus erythematosus, Sjögren’s syndrome, and systemic sclerosis. Available studies provide convincing evidence that the abundance of IL-17A in target tissues and its prime source, which is T helper 17 cells (Th17) and double negative T cells (DNT), is not an innocent bystander but in fact seems to be prerequisite for organ pathology. In this regard, IL-17A has been directly implicated in critical steps of autoimmunity. This review reports on the synergistic interactions of IL-17A with other critical determinants such as B cells, neutrophils, stromal cells, and the vasculature that promote the characteristic immunopathology of these autoimmune diseases. The summary of observations provided by this review may have empowering implications for IL-17A-based strategies to prevent clinical manifestations in a broad spectrum of autoimmune conditions.
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22
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T cell dysregulation in SLE. Clin Immunol 2022; 239:109031. [DOI: 10.1016/j.clim.2022.109031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/02/2022] [Accepted: 05/02/2022] [Indexed: 01/05/2023]
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Smita S, Chikina M, Shlomchik MJ, Tilstra JS. Heterogeneity and clonality of kidney-infiltrating T cells in murine lupus nephritis. JCI Insight 2022; 7:e156048. [PMID: 35271505 PMCID: PMC9089785 DOI: 10.1172/jci.insight.156048] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 03/04/2022] [Indexed: 11/17/2022] Open
Abstract
We previously found that kidney-infiltrating T cells (KITs) in murine lupus nephritis (LN) resembled dysfunctional T cells that infiltrate tumors. This unexpected finding raised the question of how to reconcile the "exhausted" phenotype of KITs with ongoing tissue destruction in LN. To address this, we performed single-cell RNA-Seq and TCR-Seq of KITs in murine lupus models. We found that CD8+ KITs existed first in a transitional state, before clonally expanding and evolving toward exhaustion. On the other hand, CD4+ KITs did not fit into current differentiation paradigms but included both hypoxic and cytotoxic subsets with a pervasive exhaustion signature. Thus, autoimmune nephritis is unlike acute pathogen immunity; rather, the kidney microenvironment suppresses T cells by progressively inducing exhausted states. Our findings suggest that LN, a chronic condition, results from slow evolution of damage caused by dysfunctional T cells and their precursors on the way to exhaustion. These findings have implications for both autoimmunity and tumor immunology.
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Affiliation(s)
- Shuchi Smita
- Department of Immunology
- Department of Computational and Systems Biology
| | | | | | - Jeremy S. Tilstra
- Department of Medicine, and
- Lupus Center of Excellence, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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24
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Abstract
Significance: Epigenetic dysregulation plays an important role in the pathogenesis and development of autoimmune diseases. Oxidative stress is associated with autoimmunity and is also known to alter epigenetic mechanisms. Understanding the interplay between oxidative stress and epigenetics will provide insights into the role of environmental triggers in the development of autoimmunity in genetically susceptible individuals. Recent Advances: Abnormal DNA and histone methylation patterns in genes and pathways involved in interferon and tumor necrosis factor signaling, cellular survival, proliferation, metabolism, organ development, and autoantibody production have been described in autoimmunity. Inhibitors of DNA and histone methyltransferases showed potential therapeutic effects in animal models of autoimmune diseases. Oxidative stress can regulate epigenetic mechanisms via effects on DNA damage repair mechanisms, cellular metabolism and the local redox environment, and redox-sensitive transcription factors and pathways. Critical Issues: Studies looking into oxidative stress and epigenetics in autoimmunity are relatively limited. The number of available longitudinal studies to explore the role of DNA methylation in the development of autoimmune diseases is small. Future Directions: Exploring the relationship between oxidative stress and epigenetics in autoimmunity will provide clues for potential preventative measures and treatment strategies. Inception cohorts with longitudinal follow-up would help to evaluate epigenetic marks as potential biomarkers for disease development, progression, and treatment response in autoimmunity. Antioxid. Redox Signal. 36, 423-440.
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Affiliation(s)
- Xiaoqing Zheng
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Amr H Sawalha
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Lupus Center of Excellence, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.,Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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25
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Alexander T, Hedrich CM. Systemic lupus erythematosus - Are children miniature adults? Clin Immunol 2021; 234:108907. [PMID: 34890808 DOI: 10.1016/j.clim.2021.108907] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/02/2021] [Accepted: 12/02/2021] [Indexed: 12/13/2022]
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune/inflammatory disease that can affect any organ system and cause significant damage and organ failure. Disease-onset during childhood (juvenile-onset SLE) is associated with less typical autoantibody patterns, diffuse organ involvement, more damage already at diagnoses, and a higher need of immunomodulating treatment, including corticosteroids, when compared to adult-onset SLE. Differences in the molecular pathophysiology within SLE, and over-representation of patients with "genetic SLE" contribute to differences in clinical presentation and treatment responses between children and adults. This manuscript summarizes currently available literature focusing on parallels and differences between clinical pictures, known pathomechanisms, and available treatment options in juvenile- versus adult-onset SLE.
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Affiliation(s)
- Tobias Alexander
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and the Berlin Institute of Health, 10117 Berlin, Germany; Deutsches Rheuma-Forschungszentrum (DRFZ Berlin), ein Leibniz Institute, 10117 Berlin, Germany
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Live Course and Medical Sciences, University of Liverpool, Liverpool, UK; Department of Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
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26
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[Systemic lupus erythematosus-are children small adults?]. Z Rheumatol 2021; 81:28-35. [PMID: 34748078 DOI: 10.1007/s00393-021-01116-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2021] [Indexed: 10/19/2022]
Abstract
Systemic lupus erythematosus (SLE) is a systemic inflammatory disease that can affect any organ of the human body and cause significant damage. As compared to patients with adult-onset SLE, children and young people (juvenile SLE) more frequently experience extensive diffuse organ involvement, more organ damage at diagnoses, and resistance to immunomodulatory treatment. This manuscript emphasizes parallels and differences between the clinical pictures, known pathomechanisms, and available treatment options of juvenile and adult-onset SLE.
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27
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DNA Methylation and Immune Memory Response. Cells 2021; 10:cells10112943. [PMID: 34831166 PMCID: PMC8616503 DOI: 10.3390/cells10112943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 12/16/2022] Open
Abstract
The generation of memory is a cardinal feature of the adaptive immune response, involving different factors in a complex process of cellular differentiation. This process is essential for protecting the second encounter with pathogens and is the mechanism by which vaccines work. Epigenetic changes play important roles in the regulation of cell differentiation events. There are three types of epigenetic regulation: DNA methylation, histone modification, and microRNA expression. One of these epigenetic changes, DNA methylation, occurs in cytosine residues, mainly in CpG dinucleotides. This brief review aimed to analyse the literature to verify the involvement of DNA methylation during memory T and B cell development. Several studies have highlighted the importance of the DNA methyltransferases, enzymes that catalyse the methylation of DNA, during memory differentiation, maintenance, and function. The methylation profile within different subsets of naïve activated and memory cells could be an interesting tool to help monitor immune memory response.
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28
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Li P, Jiang M, Li K, Li H, Zhou Y, Xiao X, Xu Y, Krishfield S, Lipsky PE, Tsokos GC, Zhang X. Glutathione peroxidase 4-regulated neutrophil ferroptosis induces systemic autoimmunity. Nat Immunol 2021; 22:1107-1117. [PMID: 34385713 PMCID: PMC8609402 DOI: 10.1038/s41590-021-00993-3] [Citation(s) in RCA: 204] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 07/07/2021] [Indexed: 02/06/2023]
Abstract
The linkage between neutrophil death and the development of autoimmunity has not been thoroughly explored. Here, we show that neutrophils from either lupus-prone mice or patients with systemic lupus erythematosus (SLE) undergo ferroptosis. Mechanistically, autoantibodies and interferon-α present in the serum induce neutrophil ferroptosis through enhanced binding of the transcriptional repressor CREMα to the glutathione peroxidase 4 (Gpx4, the key ferroptosis regulator) promoter, which leads to suppressed expression of Gpx4 and subsequent elevation of lipid-reactive oxygen species. Moreover, the findings that mice with neutrophil-specific Gpx4 haploinsufficiency recapitulate key clinical features of human SLE, including autoantibodies, neutropenia, skin lesions and proteinuria, and that the treatment with a specific ferroptosis inhibitor significantly ameliorates disease severity in lupus-prone mice reveal the role of neutrophil ferroptosis in lupus pathogenesis. Together, our data demonstrate that neutrophil ferroptosis is an important driver of neutropenia in SLE and heavily contributes to disease manifestations.
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Affiliation(s)
- Pengchong Li
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730,Clinical Immunology Centre, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Mengdi Jiang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730,Clinical Immunology Centre, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Ketian Li
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730,Clinical Immunology Centre, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Hao Li
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Yangzhong Zhou
- Department of Internal Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Xinyue Xiao
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Yue Xu
- Clinical Immunology Centre, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730
| | - Suzanne Krishfield
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Peter E Lipsky
- RILITE Research Institute and AMPEL BioSolutions, Charlottesville, Virginia, USA.,Correspondence to: Xuan Zhang, , George C Tsokos, , Peter E Lipsky,
| | - George C Tsokos
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA.,Correspondence to: Xuan Zhang, , George C Tsokos, , Peter E Lipsky,
| | - Xuan Zhang
- Clinical Immunology Centre, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China, 100730,Department of Rheumatology, Beijing Hospital, National Center of Gerontology, Chinese Academy of Medical Sciences & Peking Union Medical College, 1th Dongdan Dahua Road, Beijing, 100730, China.,Correspondence to: Xuan Zhang, , George C Tsokos, , Peter E Lipsky,
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29
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Abstract
The term "epigenetics" refers to a series of meiotically/mitotically inheritable alterations in gene expression, related to environmental factors, without disruption on DNA sequences of bases. Recently, the pathophysiology of autoimmune diseases (ADs) has been closely linked to epigenetic modifications. Actually, epigenetic mechanisms can modulate gene expression or repression of targeted cells and tissues involved in autoimmune/inflammatory conditions acting as keys effectors in regulation of adaptive and innate responses. ADs, as systemic lupus erythematosus (SLE), a rare disease that still lacks effective treatment, is characterized by epigenetic marks in affected cells.Taking into account that epigenetic mechanisms have been proposed as a winning strategy in the search of new more specific and personalized therapeutics agents. Thus, pharmacology and pharmacoepigenetic studies about epigenetic regulations of ADs may provide novel individualized therapies. Focussing in possible implicated factors on development and predisposition of SLE, diet is feasibly one of the most important factors since it is linked directly to epigenetic alterations and these epigenetic changes may augment or diminish the risk of SLE. Nevertheless, several studies have guaranteed that dietary therapy could be a promise to SLE patients via prophylactic actions deprived of side effects of pharmacology, decreasing co-morbidities and improving lifestyle of SLE sufferers.Herein, we review and discuss the cross-link between epigenetic mechanisms on SLE predisposition and development, as well as the influence of dietary factors on regulation epigenetic modifications that would eventually make a positive impact on SLE patients.
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30
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Hofmann SR, Carlsson E, Kapplusch F, Carvalho AL, Liloglou T, Schulze F, Abraham S, Northey S, Russ S, Surace AEA, Yoshida N, Tsokos GC, Hedrich CM. Cyclic AMP Response Element Modulator-α Suppresses PD-1 Expression and Promotes Effector CD4 + T Cells in Psoriasis. THE JOURNAL OF IMMUNOLOGY 2021; 207:55-64. [PMID: 34135066 DOI: 10.4049/jimmunol.2100240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 04/29/2021] [Indexed: 11/19/2022]
Abstract
Effector CD4+ T lymphocytes contribute to inflammation and tissue damage in psoriasis, but the underlying molecular mechanisms remain poorly understood. The transcription factor CREMα controls effector T cell function in people with systemic autoimmune diseases. The inhibitory surface coreceptor PD-1 plays a key role in the control of effector T cell function and its therapeutic inhibition in patients with cancer can cause psoriasis. In this study, we show that CD4+ T cells from patients with psoriasis and psoriatic arthritis exhibit increased production of IL-17 but decreased expression of IL-2 and PD-1. In genetically modified mice and Jurkat T cells CREMα expression was linked to low PD-1 levels. We demonstrate that CREMα is recruited to the proximal promoter of PDCD1 in which it trans-represses gene expression and corecruits DNMT3a-mediating DNA methylation. As keratinocytes limit inflammation by PD-1 ligand expression and, in this study, reported reduced expression of PD-1 on CD4+ T cells is linked to low IL-2 and high IL-17A production, our studies reveal a molecular pathway in T cells from people with psoriasis that can deserve clinical exploitation.
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Affiliation(s)
- Sigrun R Hofmann
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Emil Carlsson
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Franz Kapplusch
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Ana L Carvalho
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Triantafillos Liloglou
- Department of Molecular and Clinical Cancer Medicine, The Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Felix Schulze
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Susanne Abraham
- Klinik und Poliklinik für Dermatologie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Sarah Northey
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Susanne Russ
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Anna E A Surace
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Nobuya Yoshida
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - George C Tsokos
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom; .,Department of Rheumatology, Alder Hey Children's National Health Service Foundation Trust Hospital, Liverpool, United Kingdom; and.,National Institute for Health Research Alder Hey Clinical Research Facility, Alder Hey Children's National Health Service Foundation Trust Hospital, Liverpool, United Kingdom
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31
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ADAM9 enhances Th17 cell differentiation and autoimmunity by activating TGF-β1. Proc Natl Acad Sci U S A 2021; 118:2023230118. [PMID: 33911034 DOI: 10.1073/pnas.2023230118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The a disintegrin and metalloproteinase (ADAM) family of proteinases alter the extracellular environment and are involved in the development of T cells and autoimmunity. The role of ADAM family members in Th17 cell differentiation is unknown. We identified ADAM9 to be specifically expressed and to promote Th17 differentiation. Mechanistically, we found that ADAM9 cleaved the latency-associated peptide to produce bioactive transforming growth factor β1, which promoted SMAD2/3 phosphorylation and activation. A transcription factor inducible cAMP early repressor was found to bind directly to the ADAM9 promoter and to promote its transcription. Adam9-deficient mice displayed mitigated experimental autoimmune encephalomyelitis, and transfer of Adam9-deficient myelin oligodendrocyte globulin-specific T cells into Rag1 -/- mice failed to induce disease. At the translational level, an increased abundance of ADAM9 levels was observed in CD4+ T cells from patients with systemic lupus erythematosus, and ADAM9 gene deletion in lupus primary CD4+ T cells clearly attenuated their ability to differentiate into Th17 cells. These findings revealed that ADAM9 as a proteinase provides Th17 cells with an ability to activate transforming growth factor β1 and accelerates its differentiation, resulting in aberrant autoimmunity.
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32
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Sun T, Liu Q, Wang Y, Deng Y, Zhang D. MBD2 mediates renal cell apoptosis via activation of Tox4 during rhabdomyolysis-induced acute kidney injury. J Cell Mol Med 2021; 25:4562-4571. [PMID: 33764669 PMCID: PMC8107094 DOI: 10.1111/jcmm.16207] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 12/18/2022] Open
Abstract
Our study investigated the role of Methyl‐CpG–binding domain protein 2 (MBD2) in RM‐induced acute kidney injury (AKI) both in vitro and in vivo. MBD2 was induced by myoglobin in BUMPT cells and by glycerol in mice. MBD2 inhibition via MBD2 small interfering RNA and MBD2‐knockout (KO) attenuated RM‐induced AKI and renal cell apoptosis. The expression of TOX high mobility group box family member 4 (Tox4) induced by myoglobin was markedly reduced in MBD2‐KO mice. Chromatin immunoprecipitation analysis indicated that MBD2 directly bound to CpG islands in the Tox4 promoter region, thus preventing promoter methylation. Furthermore, siRNA inhibition of Tox4 attenuated myoglobin‐induced apoptosis in BUMPT cells. Finally, MBD2‐KO mice exhibited glycerol‐induced renal cell apoptosis by inactivation of Tox4. Altogether, our results suggested that MBD2 plays a role in RM‐induced AKI via the activation of Tox4 and represents a potential target for treatment of RM‐associated AKI.
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Affiliation(s)
- Tianshi Sun
- Department of Spine Surgery, The Third Xiangya Hospital of Central South University, Changsha, China.,Department of Emergency Medicine, Second Xiangya Hospital of Central South University, Changsha, China.,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital of Central South University, Changsha, China
| | - Qing Liu
- Department of Spine Surgery, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yifan Wang
- Department of Emergency Medicine, Second Xiangya Hospital of Central South University, Changsha, China.,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital of Central South University, Changsha, China
| | - Youwen Deng
- Department of Spine Surgery, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Dongshan Zhang
- Department of Emergency Medicine, Second Xiangya Hospital of Central South University, Changsha, China.,Emergency Medicine and Difficult Diseases Institute, Second Xiangya Hospital of Central South University, Changsha, China.,Department of Nephrology, Second Xiangya Hospital of Central South University, Changsha, China
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33
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Abstract
PURPOSE OF REVIEW Juvenile-onset systemic lupus erythematosus ((j)SLE) is an autoimmune/inflammatory disease that results in significant damage and disability. When compared to patients with disease onset in adulthood, jSLE patients exhibit increased disease activity, damage and require more aggressive treatments. This manuscript summarises age-specific pathogenic mechanisms and underscores the need for age group-specific research, classification and treatment. RECENT FINDINGS Genetic factors play a significant role in the pathophysiology of jSLE, as > 7% of patients develop disease as a result of single gene mutations. Remaining patients carry genetic variants that are necessary for disease development, but require additional factors. Increased 'genetic impact' likely contributes to earlier disease onset and more severe phenotypes. Epigenetic events have only recently started to be addressed in jSLE, and add to the list of pathogenic mechanisms that may serve as biomarkers and/or treatment targets. To allow meaningful and patient-oriented paediatric research, age-specific classification criteria and treatment targets require to be defined as currently available tools established for adult-onset SLE have limitations in the paediatric cohort. Significant progress has been made in understanding the pathophysiology of jSLE. Meaningful laboratory and clinical research can only be performed using age group-specific tools, classification criteria and treatment targets.
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Affiliation(s)
- A Charras
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - E Smith
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
| | - C M Hedrich
- Department of Women's & Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK.
- Institute in the Park, Alder Hey Children's NHS Foundation Trust Hospital, East Prescot Road, Liverpool, L14 5AB, UK.
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34
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Koga T, Ichinose K, Kawakami A, Tsokos GC. Current Insights and Future Prospects for Targeting IL-17 to Treat Patients With Systemic Lupus Erythematosus. Front Immunol 2021; 11:624971. [PMID: 33597953 PMCID: PMC7882681 DOI: 10.3389/fimmu.2020.624971] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/16/2020] [Indexed: 12/15/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by immune cell abnormalities which lead to the production of autoantibodies and the deposition of immune complexes. Interleukin (IL)-17-producing cells play an important role in the pathogenesis of the disease, making them an attractive therapeutic target. Studies in lupus-prone mice and of ex vivo cells from patients with SLE humans have shown that IL-17 represents a promising therapeutic target. Here we review molecular mechanisms involved in IL-17 production and Th17 cell differentiation and function and an update on the role of IL-17 in autoimmune diseases and the expected usefulness for targeting IL-17 therapeutically.
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Affiliation(s)
- Tomohiro Koga
- Division of Advanced Preventive Medical Sciences, Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Center for Bioinformatics and Molecular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kunihiro Ichinose
- Division of Advanced Preventive Medical Sciences, Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Atsushi Kawakami
- Division of Advanced Preventive Medical Sciences, Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - George C Tsokos
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
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35
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Epigenetics, pregnancy and autoimmune rheumatic diseases. Autoimmun Rev 2020; 19:102685. [PMID: 33115633 DOI: 10.1016/j.autrev.2020.102685] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/27/2020] [Indexed: 12/14/2022]
Abstract
Autoimmune rheumatic diseases (ARDs) are chronic conditions with a striking female predominance, frequently affecting women of childbearing age. Sex hormones and gender dimorphism of immune response are major determinants in the multifactorial pathogenesis of ARDs, with significant implications throughout reproductive life. Particularly, pregnancy represents a challenging condition in the context of autoimmunity, baring profound hormonal and immunologic changes, which are responsible for the bi-directional interaction between ARDs outcome and pregnancy course. In the latest years epigenetics has proven to be an important player in ARDs pathogenesis, finely modulating major immune functions and variably tuning the significant gender effects in autoimmunity. Additionally, epigenetics is a recognised influencer of the physiological dynamic modifications occurring during pregnancy. Still, there is currently little evidence on the pregnancy-related epigenetic modulation of immune response in ARDs patients. This review aims to overview the current knowledge of the role of epigenetics in the context of autoimmunity, as well as during physiologic and pathologic pregnancy, discussing under-regarded aspects in the interplay between ARDs and pregnancy pathology. The outline of a new ongoing European project will be presented.
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36
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MBD2 Mediates Septic AKI through Activation of PKCη/p38MAPK and the ERK1/2 Axis. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 23:76-88. [PMID: 33335794 PMCID: PMC7723772 DOI: 10.1016/j.omtn.2020.09.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/23/2020] [Indexed: 12/15/2022]
Abstract
Our previous study demonstrated that the methyl-CpG-binding domain protein 2 (MBD2) mediates vancomycin (VAN)-induced acute kidney injury (AKI). However, the role and regulation of MBD2 in septic AKI are unknown. Herein, MBD2 was induced by lipopolysaccharide (LPS) in Boston University mouse proximal tubules (BUMPTs) and mice. For both in vitro and in vivo experiments, we showed that inhibition of MBD2 by MBD2 small interfering RNA (siRNA) and MBD2-knockout (KO) substantially improved the survival rate and attenuated both LPS and cecal ligation and puncture (CLP)-induced AKI, renal cell apoptosis, and inflammatory factor production. Global genetic expression analyses and in vitro experiments suggest that the expression of protein kinase C eta (PKCη), caused by LPS, is markedly suppressed in MBD2-KO mice and MBD2 siRNA, respectively. Mechanistically, chromatin immunoprecipitation (ChIP) analysis indicates that MBD2 directly binds to promoter region CpG islands of PKCη via suppression of promoter methylation. Furthermore, PKCη siRNA improves the survival rate and attenuates LPS-induced BUMPT cell apoptosis and inflammatory factor production via inactivation of p38 mitogen-activated protein kinase (MAPK) and extracellular signal-regulated kinase (ERK)1/2, which were further verified by PKCη siRNA treatment in CLP-induced AKI. Finally, MBD2-KO mice exhibited CLP-induced renal cell apoptosis and inflammatory factor production by inactivation of PKCη/p38MAPK and ERK1/2 signaling. Taken together, the data indicate that MBD2 mediates septic-induced AKI through the activation of PKCη/p38MAPK and the ERK1/2 axis. MBD2 represents a potential target for treatment of septic AKI.
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37
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Smith EMD, Lythgoe H, Midgley A, Beresford MW, Hedrich CM. Juvenile-onset systemic lupus erythematosus: Update on clinical presentation, pathophysiology and treatment options. Clin Immunol 2019; 209:108274. [PMID: 31678365 DOI: 10.1016/j.clim.2019.108274] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/12/2019] [Accepted: 10/13/2019] [Indexed: 12/25/2022]
Abstract
Juvenile-onset systemic lupus erythematosus (jSLE) accounts for up to 20% of all SLE patients. Key differences between juvenile- and adult-onset (aSLE) disease include higher disease activity, earlier development of damage, and increased use of immunosuppressive treatment in jSLE suggesting (at least partial) infectivity secondary to variable pathomechanisms. While the exact pathophysiology of jSLE remains unclear, genetic factors, immune complex deposition, complement activation, hormonal factors and immune cell dysregulation are involved to variable extents, promising future patient stratification based on immune phenotypes. Though less effective and potentially toxic, jSLE patients are treated based upon evidence from studies in aSLE cohorts. Here, age-specific clinical features of jSLE, underlying pathomechanisms, treatment options and disease outcomes will be addressed. Future directions to improve the care of jSLE patients, including implementation of the Single Hub and Access point for pediatric Rheumatology in Europe (SHARE) recommendations, biomarkers, treat to target and personalized medicine approaches are discussed.
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Affiliation(s)
- Eve Mary Dorothy Smith
- Department of Women's & Children's Health, Institution of Translational Medicine, University of Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Eaton Rd, Liverpool L12 2AP, UK.
| | - Hanna Lythgoe
- Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Eaton Rd, Liverpool L12 2AP, UK
| | - Angela Midgley
- Department of Women's & Children's Health, Institution of Translational Medicine, University of Liverpool, UK
| | - Michael William Beresford
- Department of Women's & Children's Health, Institution of Translational Medicine, University of Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Eaton Rd, Liverpool L12 2AP, UK
| | - Christian Michael Hedrich
- Department of Women's & Children's Health, Institution of Translational Medicine, University of Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Eaton Rd, Liverpool L12 2AP, UK.
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Hofmann SR, Mäbert K, Kapplusch F, Russ S, Northey S, Beresford MW, Tsokos GC, Hedrich CM. cAMP Response Element Modulator α Induces Dual Specificity Protein Phosphatase 4 to Promote Effector T Cells in Juvenile-Onset Lupus. THE JOURNAL OF IMMUNOLOGY 2019; 203:2807-2816. [PMID: 31653682 DOI: 10.4049/jimmunol.1900760] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 09/19/2019] [Indexed: 12/19/2022]
Abstract
Effector CD4+ T cells with increased IL-17A and reduced IL-2 production contribute to tissue inflammation and organ damage in systemic lupus erythematosus (SLE). Increased expression of the transcription factor cAMP response element modulator (CREM) α promotes altered cytokine expression in SLE. The aim of this study was to investigate CREMα-mediated events favoring effector CD4+ T cells in health and disease. Using CRISPR/Cas9 genome editing and lentiviral transduction, we generated CREMα-deficient and CREMα-overexpressing Jurkat T cells. Gene expression and regulatory events were assessed using luciferase reporter assays and chromatin immunoprecipitation. Interaction between CREMα and p300 was investigated using proximity ligation assays, coimmunoprecipitation, and knockdown of p300. Gene expression profiles of modified cells were compared with CD4+ T cells from patients with juvenile-onset SLE. We show that CREMα induces dual specificity protein phosphatase (DUSP) 4 in effector CD4+ T cells through corecruitment of p300. The transcriptional coactivator p300 mediates histone acetylation at DUSP4, prompting increased gene expression. Using DUSP4 transfection models and genetically modified CREM-deficient and CREMα-overexpressing T cells, we demonstrate the molecular underpinnings by which DUSP4 induces IL-17A while limiting IL-2 expression. We demonstrate that CD4+ T cells from patients with juvenile-onset SLE share phenotypical features with CREMα-overexpressing CD4+ T cells, including increased DUSP4 expression and imbalanced IL-17A and IL-2 production. Taken together, we describe CREMα-mediated mechanisms that involve the transcriptional upregulation of DUSP4, leading to imbalanced cytokine production by effector T cells. Our findings identify the CREMα/DUSP4 axis as a promising candidate in the search for biomarkers and therapeutic targets in SLE.
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Affiliation(s)
- Sigrun R Hofmann
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, D01307 Dresden, Germany
| | - Katrin Mäbert
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, D01307 Dresden, Germany
| | - Franz Kapplusch
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool L14 5AB, United Kingdom
| | - Susanne Russ
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, D01307 Dresden, Germany
| | - Sarah Northey
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool L14 5AB, United Kingdom
| | - Michael W Beresford
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool L14 5AB, United Kingdom.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool L14 5AB, United Kingdom.,National Institute for Health Research Alder Hey Clinical Research Facility, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool L14 5AB, United Kingdom; and
| | - George C Tsokos
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Christian M Hedrich
- Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, D01307 Dresden, Germany; .,Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool L14 5AB, United Kingdom.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool L14 5AB, United Kingdom.,National Institute for Health Research Alder Hey Clinical Research Facility, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool L14 5AB, United Kingdom; and
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Surace AEA, Hedrich CM. The Role of Epigenetics in Autoimmune/Inflammatory Disease. Front Immunol 2019; 10:1525. [PMID: 31333659 PMCID: PMC6620790 DOI: 10.3389/fimmu.2019.01525] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/18/2019] [Indexed: 12/21/2022] Open
Abstract
Historically, systemic self-inflammatory conditions were classified as either autoinflammatory and caused by the innate immune system or autoimmune and driven by adaptive immune responses. However, it became clear that reality is much more complex and that autoimmune/inflammatory conditions range along an “inflammatory spectrum” with primarily autoinflammatory vs. autoimmune conditions resembling extremes at either end. Epigenetic modifications influence gene expression and alter cellular functions without modifying the genomic sequence. Methylation of CpG DNA dinucleotides and/or their hydroxymethylation, post-translational modifications to amino termini of histone proteins, and non-coding RNA expression are main epigenetic events. The pathophysiology of autoimmune/inflammatory diseases has been closely linked with disease causing gene mutations (rare) or a combination of genetic susceptibility and epigenetic modifications arising from exposure to the environment (more common). Over recent years, progress has been made in understanding molecular mechanisms involved in systemic inflammation and the contribution of innate and adaptive immune responses. Epigenetic events have been identified as (i) central pathophysiological factors in addition to genetic disease predisposition and (ii) as co-factors determining clinical pictures and outcomes in individuals with monogenic disease. Thus, a complete understanding of epigenetic contributors to autoimmune/inflammatory disease will result in approaches to predict individual disease outcomes and the introduction of effective, target-directed, and tolerable therapies. Here, we summarize recent findings that signify the importance of epigenetic modifications in autoimmune/inflammatory disorders along the inflammatory spectrum choosing three examples: the autoinflammatory bone condition chronic nonbacterial osteomyelitis (CNO), the “mixed pattern” disorder psoriasis, and the autoimmune disease systemic lupus erythematosus (SLE).
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Affiliation(s)
- Anna Elisa Andrea Surace
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, United Kingdom.,Pädiatrische Rheumatologie, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
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Pathological cardiac hypertrophy: the synergy of adenylyl cyclases inhibition in cardiac and immune cells during chronic catecholamine stress. J Mol Med (Berl) 2019; 97:897-907. [PMID: 31062036 DOI: 10.1007/s00109-019-01790-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 04/18/2019] [Accepted: 04/26/2019] [Indexed: 12/21/2022]
Abstract
Response to stressors in our environment and daily lives is an adaptation conserved through evolution as it is beneficial in enhancing the survival and continuity of humans. Although stressors have evolved, the drastic physiological response they elicit still remains unchanged. The chronic secretion and circulation of catecholamines to produce physical responses when they are not required may result in pathological consequences which affect cardiac function drastically. This review seeks to point out the probable implication of chronic stress in inducing an inflammation disorder in the heart. We discussed the likely synergy of a G protein-independent stimuli signaling via β2-adrenergic receptors in both cardiomyocytes and immune cells during chronic catecholamine stress. To explain this synergy, we hypothesized the possibility of adenylyl cyclases having a regulatory effect on G protein-coupled receptor kinases. This was based on the negative correlations they exhibit during normal cardiac function and heart failures. As such, the downregulation of adenylyl cyclases in cardiomyocytes and immune cells during chronic catecholamine stress enhances the expressions of G protein-coupled receptor kinases. In addition, we explain the maladaptive roles played by G protein-coupled receptor kinase and extracellular signal-regulated kinase in the synergistic cascade that pathologically remodels the heart. Finally, we highlighted the therapeutic potentials of an adenylyl cyclases stimulator to attenuate pathological cardiac hypertrophy (PCH) and improve cardiac function in patients developing cardiac disorders due to chronic catecholamine stress.
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Crispin JC, Hedrich CM, Suárez-Fueyo A, Comte D, Tsokos GC. SLE-Associated Defects Promote Altered T Cell Function. Crit Rev Immunol 2019; 37:39-58. [PMID: 29431078 DOI: 10.1615/critrevimmunol.2018025213] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease linked to profound defects in the function and phenotype of T lymphocytes. Here, we describe abnormal signaling pathways that have been documented in T cells from patients with SLE and discuss how they impact gene expression and immune function, in order to understand how they contribute to disease development and progression.
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Affiliation(s)
- Jose C Crispin
- Departamento de Inmunologia y Reumatologia, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Christian M Hedrich
- Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
| | - Abel Suárez-Fueyo
- Department of Rheumatology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Denis Comte
- Divisions of Immunology and Allergy, Lausanne University Hospital, Lausanne, Switzerland
| | - George C Tsokos
- Department of Rheumatology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
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Koga T, Ichinose K, Kawakami A, Tsokos GC. The role of IL-17 in systemic lupus erythematosus and its potential as a therapeutic target. Expert Rev Clin Immunol 2019; 15:629-637. [PMID: 30874446 DOI: 10.1080/1744666x.2019.1593141] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by autoantibodies production and immune complex deposition with systemic clinical manifestations. Interleukin (IL)-17-producing cells play a crucial role in disease pathogenesis and represent an attractive therapeutic target. Areas covered: This review provides an update on the possibility of targeting IL-17 in SLE. The rational for this approach as well as currently available and future targets are discussed. Expert opinion: Although human expression studies and animal models indicate that IL-17 blocking may be a promising therapeutic strategy for SLE, direct evidence for IL-17 inhibition in SLE patients is unavailable. Biologic therapies and small-molecule drugs that target IL-17 production are required for the achievement of a favorable clinical effect in SLE patients.
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Affiliation(s)
- Tomohiro Koga
- a Unit of Advanced Preventive Medical Sciences , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan.,b Center for Bioinformatics and Molecular Medicine , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - Kunihiro Ichinose
- a Unit of Advanced Preventive Medical Sciences , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - Atsushi Kawakami
- a Unit of Advanced Preventive Medical Sciences , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - George C Tsokos
- c Division of Rheumatology and Clinical Immunology, Department of Medicine , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA
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TSOKOS GEORGEC, TSOKOS MARIAG. TARGETING TARGETED TREATMENT FOR IMMUNE AND NON-IMMUNE KIDNEY DISEASES. TRANSACTIONS OF THE AMERICAN CLINICAL AND CLIMATOLOGICAL ASSOCIATION 2019; 130:88-99. [PMID: 31516171 PMCID: PMC6735968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We have found that calcium calmodulin kinase IV is increased in T cells, podocytes, and mesangial cells from patients with systemic lupus erythematosus, as well as in lupus-prone mice, podocytes of patients with focal segmental glomerulosclerosis, and in mice injected with doxorubicin. We showed that this accounts for aberrant T cell function and glomerular damage. Using nanoparticles (nlg) loaded with a small drug inhibitor of calcium calmodulin kinase IV and tagged with antibodies directed to CD4 we have been able to show inhibition of autoimmunity and lupus nephritis. Also, using nlg tagged with antibodies to nephrin, we showed suppression of nephritis in lupus-prone mice and of glomerular damage in mice exposed to doxorubicin. We propose the development of approaches to deliver drugs to cells in a targeted and precise manner.
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Affiliation(s)
- GEORGE C. TSOKOS
- Correspondence and reprint requests: George C. Tsokos, MD, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School,
330 Brookline Ave., CLS 937, Boston, Massachusetts 02215617-735-4161
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Frangou E, Chrysanthopoulou A, Mitsios A, Kambas K, Arelaki S, Angelidou I, Arampatzioglou A, Gakiopoulou H, Bertsias GK, Verginis P, Ritis K, Boumpas DT. REDD1/autophagy pathway promotes thromboinflammation and fibrosis in human systemic lupus erythematosus (SLE) through NETs decorated with tissue factor (TF) and interleukin-17A (IL-17A). Ann Rheum Dis 2018; 78:238-248. [PMID: 30563869 PMCID: PMC6352428 DOI: 10.1136/annrheumdis-2018-213181] [Citation(s) in RCA: 155] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 10/28/2018] [Accepted: 11/01/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The release of neutrophil extracellular traps (NETs) represents a novel neutrophil effector function in systemic lupus erythematosus (SLE) pathogenesis. However, the molecular mechanism underlying NET release and how NETs mediate end-organ injury in SLE remain elusive. METHODS NET formation and NET-related proteins were assessed in the peripheral blood and biopsies from discoid lupus and proliferative nephritis, using immunofluorescence, immunoblotting, quantitative PCR and ELISA. Autophagy was assessed by immunofluorescence and immunoblotting. The functional effects of NETs in vitro were assessed in a primary fibroblast culture. RESULTS Neutrophils from patients with active SLE exhibited increased basal autophagy levels leading to enhanced NET release, which was inhibited in vitro by hydroxychloroquine. NETosis in SLE neutrophils correlated with increased expression of the stress-response protein REDD1. Endothelin-1 (ET-1) and hypoxia-inducible factor-1α (HIF-1α) were key mediators of REDD1-driven NETs as demonstrated by their inhibition with bosentan and L-ascorbic acid, respectively. SLE NETs were decorated with tissue factor (TF) and interleukin-17A (IL-17A), which promoted thrombin generation and the fibrotic potential of cultured skin fibroblasts. Notably, TF-bearing and IL-17A-bearing NETs were abundant in discoid skin lesions and in the glomerular and tubulointerstitial compartment of proliferative nephritis biopsy specimens. CONCLUSIONS Our data suggest the involvement of REDD1/autophagy/NET axis in end-organ injury and fibrosis in SLE, a likely candidate for repositioning of existing drugs for SLE therapy. Autophagy-mediated release of TF-bearing and IL-17A-bearing NETs provides a link between thromboinflammation and fibrosis in SLE and may account for the salutary effects of hydroxychloroquine.
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Affiliation(s)
- Eleni Frangou
- Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Department of Internal Medicine, Medical School, University of Cyprus, Nicosia, Cyprus.,Department of Nephrology and Transplantation, Nicosia General Hospital, Nicosia, Cyprus
| | - Akrivi Chrysanthopoulou
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Alexandros Mitsios
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Konstantinos Kambas
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Stella Arelaki
- Department of Pathology, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupolis, Greece
| | - Iliana Angelidou
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Athanasios Arampatzioglou
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Hariklia Gakiopoulou
- 1st Department of Pathology, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - George K Bertsias
- Rheumatology, Clinical Immunology and Allergy, University of Crete School of Medicine, Heraklion, Greece
| | - Panayotis Verginis
- Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Konstantinos Ritis
- Department of Internal Medicine, Laboratory of Molecular Hematology, Democritus University of Thrace, Alexandroupolis, Greece.,First Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupolis, Greece
| | - Dimitrios T Boumpas
- Laboratory of Immune Regulation and Tolerance, Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, Athens, Greece .,Department of Internal Medicine, Medical School, University of Cyprus, Nicosia, Cyprus.,4th Department of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.,Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, Athens, Greece
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45
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Hedrich CM. Mechanistic aspects of epigenetic dysregulation in SLE. Clin Immunol 2018; 196:3-11. [DOI: 10.1016/j.clim.2018.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/05/2018] [Accepted: 02/05/2018] [Indexed: 12/12/2022]
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Ferretti AP, Bhargava R, Dahan S, Tsokos MG, Tsokos GC. Calcium/Calmodulin Kinase IV Controls the Function of Both T Cells and Kidney Resident Cells. Front Immunol 2018; 9:2113. [PMID: 30333818 PMCID: PMC6176098 DOI: 10.3389/fimmu.2018.02113] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 08/28/2018] [Indexed: 12/12/2022] Open
Abstract
Calcium calmodulin kinase IV (CaMK4) regulates multiple processes that significantly contribute to the lupus-related pathology by controlling the production of IL-2 and IL-17 by T cells, the proliferation of mesangial cells, and the function and structure of podocytes. CaMK4 is also upregulated in podocytes from patients with focal segmental glomerulosclerosis (FSGS). In both immune and non-immune podocytopathies, CaMK4 disrupts the structure and function of podocytes. In lupus-prone mice, targeted delivery of a CaMK4 inhibitor to CD4+ T cells suppresses both autoimmunity and the development of nephritis. Targeted delivery though to podocytes averts the deposition of immune complexes without affecting autoimmunity in lupus-prone mice and averts pathology induced by adriamycin in normal mice. Therefore, targeted delivery of a CaMK4 inhibitor to podocytes holds high therapeutic promise for both immune (lupus nephritis) and non-immune (FSGS) podocytopathies.
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Affiliation(s)
- Andrew P Ferretti
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Rhea Bhargava
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Shani Dahan
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Maria G Tsokos
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - George C Tsokos
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
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47
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Abstract
Purpose of Review Systemic lupus erythematosus is a severe autoimmune/inflammatory condition of unknown pathophysiology. Though genetic predisposition is essential for disease expression, risk alleles in single genes are usually insufficient to confer disease. Epigenetic dysregulation has been suggested as the missing link between genetic risk and the development of clinically evident disease. Recent Findings Over the past decade, epigenetic events moved into the focus of research targeting the molecular pathophysiology of SLE. Epigenetic alteration can be the net result of preceding infections, medication, diet, and/or other environmental influences. While altered DNA methylation and histone modifications had already been established as pathomechanisms, DNA hydroxymethylation was more recently identified as an activating epigenetic mark. Summary Defective epigenetic control contributes to uncontrolled cytokine and co-receptor expression, resulting in immune activation and tissue damage in SLE. Epigenetic alterations promise potential as disease biomarkers and/or future therapeutic targets in SLE and other autoimmune/inflammatory conditions.
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Affiliation(s)
- Christian Michael Hedrich
- Division of Paediatric Rheumatology and Immunology, Children's Hospital Dresden, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany. .,Department of Women᾿s & Children᾿s Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK. .,Department of Paediatric Rheumatology, Alder Hey Children᾿s NHS Foundation Trust Hospital, East Prescott Road, Liverpool, L14 5AB, UK.
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48
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Katsuyama T, Tsokos GC, Moulton VR. Aberrant T Cell Signaling and Subsets in Systemic Lupus Erythematosus. Front Immunol 2018; 9:1088. [PMID: 29868033 PMCID: PMC5967272 DOI: 10.3389/fimmu.2018.01088] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/01/2018] [Indexed: 12/20/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic multi-organ debilitating autoimmune disease, which mainly afflicts women in the reproductive years. A complex interaction of genetics, environmental factors and hormones result in the breakdown of immune tolerance to "self" leading to damage and destruction of multiple organs, such as the skin, joints, kidneys, heart and brain. Both innate and adaptive immune systems are critically involved in the misguided immune response against self-antigens. Dendritic cells, neutrophils, and innate lymphoid cells are important in initiating antigen presentation and propagating inflammation at lymphoid and peripheral tissue sites. Autoantibodies produced by B lymphocytes and immune complex deposition in vital organs contribute to tissue damage. T lymphocytes are increasingly being recognized as key contributors to disease pathogenesis. CD4 T follicular helper cells enable autoantibody production, inflammatory Th17 subsets promote inflammation, while defects in regulatory T cells lead to unchecked immune responses. A better understanding of the molecular defects including signaling events and gene regulation underlying the dysfunctional T cells in SLE is necessary to pave the path for better management, therapy, and perhaps prevention of this complex disease. In this review, we focus on the aberrations in T cell signaling in SLE and highlight therapeutic advances in this field.
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Affiliation(s)
| | | | - Vaishali R. Moulton
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
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49
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Hedrich CM, Smith EMD, Beresford MW. Juvenile-onset systemic lupus erythematosus (jSLE) - Pathophysiological concepts and treatment options. Best Pract Res Clin Rheumatol 2018; 31:488-504. [PMID: 29773269 DOI: 10.1016/j.berh.2018.02.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The systemic autoimmune/inflammatory condition systemic lupus erythematosus (SLE) manifests before the age of 16 years in 10-20% of all cases. Clinical courses are more severe, and organ complications are more common in patients with juvenile SLE. Varying gender distribution in different age groups and increasing severity with younger age and the presence of monogenic disease in early childhood indicate distinct differences in the pathophysiology of juvenile versus adult-onset SLE. Regardless of these differences, classification criteria and treatment options are identical. In this article, we discuss age-specific pathomechanisms of juvenile-onset SLE, which are currently available and as future treatment options, and propose reclassification of different forms of SLE along the inflammatory spectrum from autoinflammation to autoimmunity.
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Affiliation(s)
- Christian M Hedrich
- Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK.
| | - Eve M D Smith
- Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
| | - Michael W Beresford
- Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK
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50
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Hofmann SR, Laass MW, Fehrs A, Schuppan D, Zevallos VF, Salminger D, Mäbert K, Hedrich CM. IL10 promoter haplotypes may contribute to altered cytokine expression and systemic inflammation in celiac disease. Clin Immunol 2018; 190:15-21. [PMID: 29481982 DOI: 10.1016/j.clim.2018.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 01/06/2023]
Abstract
Celiac disease (CD) is an autoimmune/inflammatory condition triggered by dietary gluten intake in genetically predisposed individuals. Though associations with MHC class II HLA-DQ2 or -DQ8 are the primary and necessary genetic predisposition for CD, >97% of genetically predisposed individuals never develop CD. Cytokines were measured in the serum of CD patients and controls. Possible associations with IL10 promoter variants were investigated. Cytokine expression from PBMCs was monitored in response to gluten exposure, or CD3/TCR complex stimulation in the absence or presence of recombinant IL-10. Serum cytokines varied between patients with CD at the time of diagnosis, after dietary elimination of gluten, and healthy controls. Serum IL-17A reflected disease activity. Reduced IL-10 serum levels and altered IL-10 expression by PBMCs coincided with IL10 promoter haplotypes that encode for "low" IL-10 expression (ATA). Increased prevalence of ATA IL10 promoter haplotypes and subsequently reduced IL-10 expression may be an immunological cofactor in individuals genetically predisposed for the development of CD. Resulting cytokine imbalances may be utilized as disease biomarkers in CD.
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Affiliation(s)
- S R Hofmann
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - M W Laass
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - A Fehrs
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - D Schuppan
- Institute of Translational Immunology, University Medical Center, Johannes Gutenberg University, Mainz, Germany; Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - V F Zevallos
- Institute of Translational Immunology, University Medical Center, Johannes Gutenberg University, Mainz, Germany; Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - D Salminger
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - K Mäbert
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - C M Hedrich
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, UK.
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