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Sung WY, Lin YZ, Hwang DY, Lin CH, Li RN, Tseng CC, Wu CC, Ou TT, Yen JH. Methylation of TET2 Promoter Is Associated with Global Hypomethylation and Hypohydroxymethylation in Peripheral Blood Mononuclear Cells of Systemic Lupus Erythematosus Patients. Diagnostics (Basel) 2022; 12:diagnostics12123006. [PMID: 36553013 PMCID: PMC9776498 DOI: 10.3390/diagnostics12123006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022] Open
Abstract
(1) Background: It is widely accepted that aberrant methylation patterns contribute to the development of systemic lupus erythematosus (SLE). Ten-eleven translocation (TET) methylcytosine dioxygenase is an essential enzyme of which there are three members, TET1, 2, and 3, involved in hydroxymethylation, a newly uncovered mechanism of active DNA methylation. The epigenomes of gene transcription are regulated by 5-hydroxymethylcytocine (5-hmC) and TETs, leading to dysregulation of the immune system in SLE. The purpose of this study was to investigate the global hydroxymethylation status in SLE peripheral blood mononuclear cells (PBMCs) and to explore the role of TETs in changing the patterns of methylation. (2) Methods: We collected PBMCs from 101 SLE patients and 100 healthy donors. TaqMan real-time polymerase chain-reaction assay was performed for the detection of 5-methylcytosine (5-mC), 5-hmC, and TET2 mRNA expression and single-nucleotide polymorphism genotyping. The methylation rates in different CpG sites of TET2 promoters were examined using next-generation sequencing-based deep bisulfite sequencing. Putative transcription factors were investigated using the UCSC Genome Browser on the Human Dec. 2013 (GRCh38/hg38) Assembly. (3) Results: 5-mC and 5-hmC were both decreased in SLE. The mRNA expression level of TET2 was notably high and found to be correlated with the levels of immunologic biomarkers that are indicative of SLE disease activity. The analysis of methylation rates in the TET2 promoter revealed that SLE patients had significantly higher and lower rates of methylation in TET2 105146072-154 and TET2 105146218-331, respectively. (4) Conclusions: TET2 may play an important role in 5-mC/5-hmC dynamics in the PBMCs of SLE patients. The epigenetic modification of TET2 promoters could contribute to the pathogenesis of SLE and the intensity of the immunologic reaction.
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Affiliation(s)
- Wan-Yu Sung
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Correspondence: (W.-Y.S.); (J.-H.Y.)
| | - Yuan-Zhao Lin
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Daw-Yang Hwang
- National Institute of Cancer Research, National Health Research Institutes, Tainan 350401, Taiwan
- Division of Nephrology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Chia-Hui Lin
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Ruei-Nian Li
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Chia-Chun Tseng
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Cheng-Chin Wu
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Tsan-Teng Ou
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Jeng-Hsien Yen
- Division of Rheumatology, Department of Internal medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- College of Biological Science and Technology, National Chiao Tung University, Hsinchu 30010, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
- Correspondence: (W.-Y.S.); (J.-H.Y.)
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Epigenetic Dysregulation in Autoimmune and Inflammatory Skin Diseases. Clin Rev Allergy Immunol 2022; 63:447-471. [DOI: 10.1007/s12016-022-08956-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2022] [Indexed: 11/11/2022]
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Chlorogenic Acid Relieves the Lupus Erythematosus-like Skin Lesions and Arthritis in MRL/lpr Mice. Pharmaceuticals (Basel) 2022; 15:ph15111327. [DOI: 10.3390/ph15111327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
Chlorogenic acid (CGA) is a phenylpropyl substance synthesized through the shikimic acid pathway. In addition to its anti-tumor, anti-inflammatory, and antioxidant abilities, CGA also has immunomodulatory effects. The aim of the present study is to investigate the therapeutic effects of CGA on the skin damage and arthritis caused by systemic lupus erythematosus (SLE) in an MRL/lpr mouse model. In the SLE model, female MRL/lpr mice at the age of 10 weeks old were treated with CGA daily or cyclophosphamide (CTX) weekly via intraperitoneal injection for three months. After treatment, CGA can significantly alleviate the skin and mucous membrane damage caused by SLE and has a certain improvement effect on arthritis. CGA could inhibit dsDNA expression to a certain extent but has no obvious regulation on ANA concentration. The ELISA and BioMAP results indicated that CGA might play an anti-inflammatory role by down-regulating the interleukin (IL)-17 level. In conclusion, our study demonstrates that CGA can alleviate multiorgan damage in MRL/lpr mice by reducing IL-17.
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Myeloid-derived suppressor cells shift Th17/Treg ratio and promote systemic lupus erythematosus progression through arginase-1/miR-322-5p/TGF-β pathway. Clin Sci (Lond) 2020; 134:2209-2222. [PMID: 32808653 DOI: 10.1042/cs20200799] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 12/18/2022]
Abstract
Abstract
Immune cells play important roles in systemic lupus erythematosus (SLE). We previously found that myeloid-derived suppressor cell (MDSC)-derived arginase-1 (Arg-1) promoted Th17 cell differentiation in SLE. In the present study, we performed RNA-chip to identify the microRNA regulation network between MDSCs and Th17 cells. miR-542-5p in humans, as the homologous gene of miR-322-5p in mice was significantly up-regulated in the Th17+MDSC group compared with Th17 cells cultured alone and down-regulated in the Th17+MDSC+Arg-1 inhibitor group compared with the Th17+MDSC group. We further evaluated the miR-322-5p and Th17/Treg balance in mice and found that the proportions of both Th17 cells and Tregs were elevated and that miR-322-5p overexpression activated the transforming growth factor-β pathway. Moreover, although miR-322-5p expression was higher in SLE mice, it decreased after treatment with an Arg-1 inhibitor. The proportion of Th17 cells and Th17/Treg ratio correlated with miR-322-5p levels. In conclusion, MDSC-derived Arg-1 and mmu-miR-322-5p not only promote Th17 cell and Treg differentiation, but also shift the Th17/Treg ratio in SLE. The Arg-1/miR-322-5p axis may serve as a novel treatment target for SLE.
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The epigenetic face of lupus: Focus on antigen-presenting cells. Int Immunopharmacol 2020; 81:106262. [PMID: 32045873 DOI: 10.1016/j.intimp.2020.106262] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 12/19/2022]
Abstract
In recent years, epigenetic mechanisms became widely known due to their ability to regulate and maintain physiological processes such as cell growth, development, differentiation and genomic stability. When dysregulated, epigenetic mechanisms, may introduce gene expression changes and disturbance in immune homeostasis leading to autoimmune diseases. Systemic lupus erythematosus (SLE), the most extensively studied autoimmune disorder, has already been correlated with epigenetic modifications, especially in T cells. Since these cell rely on antigen presentation, it may be assumed that erroneous activity of antigen-presenting cells (APCs), culminates in T cell abnormalities. In this review we summarize and discuss the epigenetic modifications in SLE affected APCs, with the focus on dendritic cells (DCs), B cells and monocytes. Unravelling this aspect of SLE pathogenesis, might result in identification of new disease biomarkers and putative therapeutic approaches.
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Gu C, Zhao R, Zhang X, Gu Z, Zhou W, Wang Y, Guo J, Bao Y, Sun C, Dong C, Gao J. A meta-analysis of secondary osteoporosis in systemic lupus erythematosus: prevalence and risk factors. Arch Osteoporos 2019; 15:1. [PMID: 31802295 DOI: 10.1007/s11657-019-0667-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 11/05/2019] [Indexed: 02/03/2023]
Abstract
PURPOSE This study aimed to evaluate the prevalence and risk factors of secondary osteoporosis (OP) in patients with systemic lupus erythematosus (SLE) and provide a theoretical basis for clinical prevention and treatment of SLE. METHODS Take systematic review and meta-analysis of relevant studies. Data sources are CINAHL databases, PubMed, Embase, Wan Fang, Weipu, and CNKI databases. Eligibility criteria are cross-sectional or case-control studies which analyzed the prevalence and risk factors of OP in SLE. Two authors independently screened all studies; a third author verified and identify controversial studies. The quality of the included articles was evaluated. Stata 11 and Rev-Man 5.2 software were used for data processing. RESULTS Thirty-one articles were included, with a total sample size of 3089 SLE, including 529 OP cases and 2560 non-OP cases. Meta-analysis showed that the prevalence of OP among SLE was 16% (95% CI (0.12, 0.19)). The risk of OP in SLE cases compared with controls was significantly greater with OR of 2.03 (95% CI 1.33-3.10, P = 0.001). Age, disease duration, cumulative glucocorticoid dose, duration of glucocorticoid therapy, SLICC, and menopause had significant differences between two groups. No statistical differences of daily glucocorticoid dose, SLEDAI, and BMI were found between OP and non-OP cases. CONCLUSIONS Our study found a statistically significant increased risk of OP in SLE patients compared with controls. SLE patients should be actively screened for OP and its consequences. Larger longitudinal studies are needed to confirm this possible association. The prevalence of OP in SLE was 16%. Compared with controls, the risk of OP in SLE was 2.03. There were significant differences of age, disease duration, cumulative glucocorticoid dose, time of glucocorticoid, SLICC, and menopause, while daily glucocorticoid dose, SLEDAI, and BMI had no statistical differences between OP and non-OP cases.
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Affiliation(s)
- Chaoyu Gu
- Medical College, Nantong University, 19th Qixiu Road, Nantong, 226001, China
| | - Rui Zhao
- Department of Nursing, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Xiaomei Zhang
- Department of Nursing, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Zhifeng Gu
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China.,Department of Rheumatology, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Wei Zhou
- Department of Nursing, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Yilin Wang
- Department of Nursing, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Jiaxin Guo
- Department of Nursing, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Yanfeng Bao
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Chi Sun
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China
| | - Chen Dong
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China. .,Department of Rheumatology, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China. .,Center for Geriatrics Research, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China.
| | - Jianlin Gao
- Center for Geriatrics Research, Affiliated Hospital of Nantong University, 20th Xisi Road, Nantong, 226001, China.
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Tsai CY, Hsieh SC, Lu CS, Wu TH, Liao HT, Wu CH, Li KJ, Kuo YM, Lee HT, Shen CY, Yu CL. Cross-Talk between Mitochondrial Dysfunction-Provoked Oxidative Stress and Aberrant Noncoding RNA Expression in the Pathogenesis and Pathophysiology of SLE. Int J Mol Sci 2019; 20:ijms20205183. [PMID: 31635056 PMCID: PMC6829370 DOI: 10.3390/ijms20205183] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/10/2019] [Accepted: 10/14/2019] [Indexed: 12/16/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a prototype of systemic autoimmune disease involving almost every organ. Polygenic predisposition and complicated epigenetic regulations are the upstream factors to elicit its development. Mitochondrial dysfunction-provoked oxidative stress may also play a crucial role in it. Classical epigenetic regulations of gene expression may include DNA methylation/acetylation and histone modification. Recent investigations have revealed that intracellular and extracellular (exosomal) noncoding RNAs (ncRNAs), including microRNAs (miRs), and long noncoding RNAs (lncRNAs), are the key molecules for post-transcriptional regulation of messenger (m)RNA expression. Oxidative and nitrosative stresses originating from mitochondrial dysfunctions could become the pathological biosignatures for increased cell apoptosis/necrosis, nonhyperglycemic metabolic syndrome, multiple neoantigen formation, and immune dysregulation in patients with SLE. Recently, many authors noted that the cross-talk between oxidative stress and ncRNAs can trigger and perpetuate autoimmune reactions in patients with SLE. Intracellular interactions between miR and lncRNAs as well as extracellular exosomal ncRNA communication to and fro between remote cells/tissues via plasma or other body fluids also occur in the body. The urinary exosomal ncRNAs can now represent biosignatures for lupus nephritis. Herein, we’ll briefly review and discuss the cross-talk between excessive oxidative/nitrosative stress induced by mitochondrial dysfunction in tissues/cells and ncRNAs, as well as the prospect of antioxidant therapy in patients with SLE.
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Affiliation(s)
- Chang-Youh Tsai
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University, #201 Sec.2, Shih-Pai Road, Taipei 11217, Taiwan.
| | - Song-Chou Hsieh
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Cheng-Shiun Lu
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
- Institute of Clinical Medicine, National Taiwan University College of Medicine, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Tsai-Hung Wu
- Division of Nephrology, Taipei Veterans General Hospital & National Yang-Ming University, #201 Sec. 2, Shih-Pai Road, Taipei 11217, Taiwan.
| | - Hsien-Tzung Liao
- Division of Allergy, Immunology & Rheumatology, Taipei Veterans General Hospital & National Yang-Ming University, #201 Sec.2, Shih-Pai Road, Taipei 11217, Taiwan.
| | - Cheng-Han Wu
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
- Institute of Clinical Medicine, National Taiwan University College of Medicine, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Ko-Jen Li
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Yu-Min Kuo
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
- Institute of Clinical Medicine, National Taiwan University College of Medicine, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Hui-Ting Lee
- Section of Allergy, Immunology & Rheumatology, Mackay Memorial Hospital, #92 Sec. 2, Chung-Shan North Road, Taipei 10449, Taiwan.
| | - Chieh-Yu Shen
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
- Institute of Clinical Medicine, National Taiwan University College of Medicine, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
| | - Chia-Li Yu
- Department of Internal Medicine, National Taiwan University Hospital, #7 Chung-Shan South Road, Taipei 10002, Taiwan.
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Men K, Chen Y, Zhang J, Wei D. The evaluation of cellular immune function in elderly patients with systemic lupus erythematosus. Korean J Intern Med 2019; 34:932-937. [PMID: 29172398 PMCID: PMC6610183 DOI: 10.3904/kjim.2017.224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 08/07/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND/AIMS To evaluate cellular immune function in systemic lupus erythematosus (SLE) patients over 60 years old, the association between antinuclear antibody (ANA) titers and the ratio of CD4+ /CD8+ was analyzed in this study. The distribution of ANAs and extractable nuclear antibodies (ENAs) in a healthy elderly population was also investigated. METHODS Serum ANA titers were assayed by indirect immunofluorescence (IIF) and the CD4+ /CD8+ T-cell ratio was determined by flow cytometry in 76 SLE patients and 30 healthy control individuals. IIF of cytoplasm and nuclear and nucleolar staining were performed on samples taken from 286 healthy elderly individuals. ENA levels were determined using a strip enzyme immunoassay among patients that tested positive for ANAs. RESULTS ANA titers were negative in the 30 control individuals, but were positive in the 76 SLE patients. Based on ANA titers, the SLE patients were stratified to low (≤ 1:320), medium (1:640 to 1:1,280), and high (≥ 1:2,560) titer groups. The average CD4+ /CD8+ ratio of the SLE group was significantly lower than that of the control group. Among the 286 healthy elderly volunteers, 59 (20.63%) tested positive for ANAs. A homogeneous pattern was present in 47.46% of those 59 patients and a granule pattern in the karyoplasm was present in 33.90%. Furthermore, of the 59 patients, ENAs immunoassay was positive in 18 (30.51%); Sjogren syndrome-related antigen A (SSA)/52 kd and Sjogren syndrome antigen B (SSB)/La were the two major antibodies. CONCLUSION The significantly lower CD4+ /CD8+ ratio among SLE patients over 60 years old is associated with deregulated immune responses and the development of SLE. A low ANA titer (1:160) is common in healthy elders, emphasizing the importance of considering age when determining if the evaluation of ANA titers is to be included in autoimmune disease diagnosis.
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Affiliation(s)
- Kun Men
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yu Chen
- Department of Endocrinology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Jingwei Zhang
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Dianjun Wei
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin, China
- Correspondence to Dianjun Wei, Ph.D. Department of Internal Medicine, Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, No. 23 PingJiang Rd, He’xi Dist, Tianjin, 300211, China Tel: +86-22-88328930 Fax: +86-22-88326837 E-mail:
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Zhang Y, Chen X, Deng Y. miR-125a-3p decreases levels of interlukin-17 and suppresses renal fibrosis via down-regulating TGF-β1 in systemic lupus erythematosus mediated Lupus nephritic mice. Am J Transl Res 2019; 11:1843-1853. [PMID: 30972208 PMCID: PMC6456516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 02/10/2019] [Indexed: 06/09/2023]
Abstract
Lupus nephritis (LN) is an autoimmune disorder mediated by systemic lupus erythematosus (SLE). Micro RNAs also called as miRs act potentially in the development and progression of SLE. MiR-125a-3p is reported to be down-regulated inpatients of SLE. Aim of the study was to evaluate the function of miR-125a-3p and its effect on regulation of fibrosis and interleukin (IL)-17 in LN. The Renal physiology in MRL/MPJ-Fas lpr/J mice was done by Hematoxylin and eosin staining; expression of miR-125a-3p in renal tissues by RT-PCR, Immunoblotting analysis was done expression of proteins. For in vitro studies, rat mesangial SV40MES13 cells were used and were transfected with vectors. Luciferase activity was done for studying the potential binding of miR-125a-3p with IL-17. It was found that, the expression of miR-125a-3p in kidney tissues of experimental mice were towards lower side versus the control; on the contrary the levels of IL-17 were up-regulated in experimental mice. Luciferase activity suggested that miR-125a-3p binds potentially on the 3'UTR region of IL-17. The assay also suggested up-regulation of miR-125a-3p and suppressed levels of IL-17 in SV40MES13 cells. The up-regulation of miR-125a-3p suppressed the levels of collagen I/II and transforming growth factor-β1 (TGF-β1) in SV40MES13 cells. MiR-125a-3p could be a important factor in the pathogenesis of LN which causes decrease in expression of IL-17 by potentially binding to the 3'UTR region causing suppression of fibrosis via down-regulating TGF-β1 in the SV40MES13 rat mesangial cells.
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Affiliation(s)
- Ying Zhang
- Department of Nephrology, Hanzhong Central Hospital Hanzhong 723000, Shaanxi, China
| | - Xin Chen
- Department of Nephrology, Hanzhong Central Hospital Hanzhong 723000, Shaanxi, China
| | - Ying Deng
- Department of Nephrology, Hanzhong Central Hospital Hanzhong 723000, Shaanxi, China
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Hsi E, Wang YS, Huang CW, Yu ML, Juo SHH, Liang CL. Genome-wide DNA hypermethylation and homocysteine increase a risk for myopia. Int J Ophthalmol 2019; 12:38-45. [PMID: 30662838 DOI: 10.18240/ijo.2019.01.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/27/2018] [Indexed: 01/04/2023] Open
Abstract
AIM To test for the association between genome-wide methylation and myopia in human and mice. METHODS Long interspersed nucleotide element 1 (LINE-1) methylation levels were used to surrogate genome-wide methylation level. We first tested for the association between high myopia (<-6 D) and LINE-1 methylation in leukocytes in 220 cases and 220 control subjects. Secondly, we validated the results of LINE-1 methylation in eyes from the form deprivation myopia (FDM) mice. Furthermore, we calculated the correlation of LINE-1 methylation levels between leukocyte DNA and ocular DNA in the mice. We also tested whether dopamine can alter LINE-1 methylation levels. RESULTS The LINE-1 methylation level was significantly higher in the myopic human subjects than controls. The upper and middle tertiles of the methylation levels increased an approximately 2-fold (P≤0.002) risk for myopia than the lower tertile. Similarly, FDM mice had high LINE-1 methylation levels in the leukocyte, retina and sclera, and furthermore the methylation levels detected from these three tissues were significantly correlated. Immunohistochemical staining revealed higher levels of homocysteine and methionine in the rodent myopic eyes than normal eyes. Dopamine treatment to the cells reduced both LINE-1 methylation and DNA methyltransferase levels. CONCLUSION LINE-1 hypermethylation may be associated with high myopia in human and mice. Homocysteine and methionine are accumulated in myopic eyes, which may provide excess methyl group for genome-wide methylation.
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Affiliation(s)
- Edward Hsi
- Centre for Myopia and Eye Disease, Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan.,Department of Genome Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yung-Song Wang
- Department of Genome Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.,Institute of Fisheries Science, National Taiwan University, Taipei 106, Taiwan
| | - Chia-Wei Huang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ming-Lung Yu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.,Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Suh-Hang Hank Juo
- Centre for Myopia and Eye Disease, Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan.,Graduate Institute of Biomedical Sciences, China Medical University, Taichung 404, Taiwan.,Institute of New Drug Development, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan.,Drug Development Center, China Medical University 404, Taiwan
| | - Chung-Ling Liang
- Department of Ophthalmology, Asia University Hospital, Taichung 413, Taiwan.,Department of Optometry, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
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Integrated Chemoinformatics Approaches Toward Epigenetic Drug Discovery. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2019. [DOI: 10.1007/978-3-030-05282-9_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Peng H, Wan LY, Liang JJ, Zhang YQ, Ai WB, Wu JF. The roles of lncRNA in hepatic fibrosis. Cell Biosci 2018; 8:63. [PMID: 30534359 PMCID: PMC6282372 DOI: 10.1186/s13578-018-0259-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 11/22/2018] [Indexed: 01/01/2023] Open
Abstract
Increasing evidence indicates that long non-coding RNAs (lncRNAs) regulate gene or protein expression; however, their function in the progression of hepatic fibrosis remains unclear. Hepatic fibrosis is a continuous wound-healing process caused by numerous chronic hepatic diseases, and the activation of hepatic stellate cells (HSCs) is generally considered to be a pivotal step in hepatic fibrosis. In the process of hepatic fibrosis, some lncRNAs regulates diverse cellular processes. Here are several examples: the lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) and liver fibrosis-associated lncRNA1 (lnc-LFAR1) promote HSC activation in the progression of hepatic fibrosis via the transforming growth factor-β signaling pathway; the lncRNA HIF 1 alpha-antisense RNA 1 (HIF1A-AS1) and Maternally expressed gene 3 reduce HSC activation which are associated with DNA methylation; the lncRNA plasmacytoma variant translocation 1, Homeobox (HOX) transcript antisense RNA and MALAT1 promote HSC activation as competing endogenous RNAs (ceRNAs); the long intergenic non-coding RNA-p21 (lncRNA-p21) and Growth arrest-specific transcript 5 reduce HSC activation as ceRNAs. As we get to know more about the function of lncRNAs in hepatic fibrosis, more and more ideas for the molecular targeted therapy in hepatic fibrosis will be put forward.
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Affiliation(s)
- Hu Peng
- 1Medical College, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,3Institute of Organ Fibrosis and Targeted Drug Delivery, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,4Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China
| | - Lin-Yan Wan
- 1Medical College, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,2Digestive Medicine, The People's Hospital of China Three Gorges University, 31 Huti Subdistrict, Xi Ling District, Yichang, 443000 Hubei China.,3Institute of Organ Fibrosis and Targeted Drug Delivery, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China
| | - Jia-Jie Liang
- 1Medical College, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,3Institute of Organ Fibrosis and Targeted Drug Delivery, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,4Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China
| | - Yan-Qiong Zhang
- 1Medical College, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,3Institute of Organ Fibrosis and Targeted Drug Delivery, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,4Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China
| | - Wen-Bing Ai
- The Yiling Hospital of Yichang, 31 Donghu Road, Yi Ling District, Yichang, 443100 Hubei China
| | - Jiang-Feng Wu
- 1Medical College, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,2Digestive Medicine, The People's Hospital of China Three Gorges University, 31 Huti Subdistrict, Xi Ling District, Yichang, 443000 Hubei China.,3Institute of Organ Fibrosis and Targeted Drug Delivery, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,4Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, 8 Daxue Road, Xiling District, Yichang, 443002 China.,The Yiling Hospital of Yichang, 31 Donghu Road, Yi Ling District, Yichang, 443100 Hubei China
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14
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Vahidi Z, Samadi M, Mahmoudi M, RezaieYazdi Z, Sahebari M, Tabasi N, Esmaeili SA, Sahebkar A, Rastin M. Lactobacillus rhamnosus and Lactobacillus delbrueckii ameliorate the expression of miR-155 and miR-181a in SLE patients. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.07.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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15
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Yin H, Wu H, Chen Y, Zhang J, Zheng M, Chen G, Li L, Lu Q. The Therapeutic and Pathogenic Role of Autophagy in Autoimmune Diseases. Front Immunol 2018; 9:1512. [PMID: 30108582 PMCID: PMC6080611 DOI: 10.3389/fimmu.2018.01512] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/18/2018] [Indexed: 12/21/2022] Open
Abstract
Autophagy is a complicated cellular mechanism that maintains cellular and tissue homeostasis and integrity via degradation of senescent, defective subcellular organelles, infectious agents, and misfolded proteins. Accumulating evidence has shown that autophagy is involved in numerous immune processes, such as removal of intracellular bacteria, cytokine production, autoantigen presentation, and survival of lymphocytes, indicating an apparent and important role in innate and adaptive immune responses. Indeed, in genome-wide association studies, autophagy-related gene polymorphisms have been suggested to be associated with the pathogenesis of several autoimmune and inflammatory disorders, such as systemic lupus erythematosus, psoriasis, rheumatoid arthritis, inflammatory bowel disease, and multiple sclerosis. In addition, conditional knockdown of autophagy-related genes in mice displayed therapeutic effects on several autoimmune disease models by reducing levels of inflammatory cytokines and autoreactive immune cells. However, the inhibition of autophagy accelerates the progress of some inflammatory and autoimmune diseases via promotion of inflammatory cytokine production. Therefore, this review will summarize the current knowledge of autophagy in immune regulation and discuss the therapeutic and pathogenic role of autophagy in autoimmune diseases to broaden our understanding of the etiopathogenesis of autoimmune diseases and shed light on autophagy-mediated therapies.
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Affiliation(s)
- Heng Yin
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Haijing Wu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yongjian Chen
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jianzhong Zhang
- Department of Dermatology, Peking University People's Hospital, Beijing, China
| | - Min Zheng
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Genhui Chen
- Beijing Wenfeng Tianji Pharmaceuticals Ltd., Beijing, China
| | - Linfeng Li
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qianjin Lu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital, Central South University, Changsha, China
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16
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Epigenetic regulation in B-cell maturation and its dysregulation in autoimmunity. Cell Mol Immunol 2018; 15:676-684. [PMID: 29375128 PMCID: PMC6123482 DOI: 10.1038/cmi.2017.133] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/22/2017] [Accepted: 10/23/2017] [Indexed: 12/11/2022] Open
Abstract
B cells have a critical role in the initiation and acceleration of autoimmune diseases, especially those mediated by autoantibodies. In the peripheral lymphoid system, mature B cells are activated by self or/and foreign antigens and signals from helper T cells for differentiating into either memory B cells or antibody-producing plasma cells. Accumulating evidence has shown that epigenetic regulations modulate somatic hypermutation and class switch DNA recombination during B-cell activation and differentiation. Any abnormalities in these complex regulatory processes may contribute to aberrant antibody production, resulting in autoimmune pathogenesis such as systemic lupus erythematosus. Newly generated knowledge from advanced modern technologies such as next-generation sequencing, single-cell sequencing and DNA methylation sequencing has enabled us to better understand B-cell biology and its role in autoimmune development. Thus this review aims to summarize current research progress in epigenetic modifications contributing to B-cell activation and differentiation, especially under autoimmune conditions such as lupus, rheumatoid arthritis and type 1 diabetes.
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17
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Lleo A, Marzorati S, Anaya JM, Gershwin ME. Primary biliary cholangitis: a comprehensive overview. Hepatol Int 2017; 11:485-499. [PMID: 29164395 DOI: 10.1007/s12072-017-9830-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 10/05/2017] [Indexed: 12/15/2022]
Abstract
Primary biliary cholangitis (PBC) is an autoimmune liver disease characterized by biliary destruction, progressive cholestasis, and potentially liver cirrhosis. Patients develop a well-orchestrated immune reaction, both innate and adaptive, against mitochondrial antigens that specifically targets intrahepatic biliary cells. A puzzling feature of PBC is that the immune attack is predominantly organ specific, although the mitochondrial autoantigens are found in all nucleated cells. The disease results from a combination of genetic and environmental risk factors; however, the exact pathogenesis remains unclear. Serologically, PBC is characterized by presence of antimitochondrial antibodies, which are present in 90-95 % of patients and are often detectable years before clinical signs appear. Like other complex disorders, PBC is heterogeneous in its presentation, symptomatology, disease progression, and response to therapy. A significant number of patients develop end-stage liver disease and eventually require liver transplantation. Recent studies from large international cohorts have better identified prognostic factors, suggesting a change in patient management based on risk stratification. Therapeutic options are changing. In this review we discuss data on the autoimmune responses and treatment of the disease.
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Affiliation(s)
- Ana Lleo
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Rozzano, MI, Italy.,Department of Biomedical Sciences, Humanitas University, Rozzano, MI, Italy
| | - Simona Marzorati
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Rozzano, MI, Italy
| | - Juan-Manuel Anaya
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - M Eric Gershwin
- Division of Rheumatology, Allergy, and Clinical Immunology, University of California at Davis, Davis, CA, USA.
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18
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Genomics and epigenomics in rheumatic diseases: what do they provide in terms of diagnosis and disease management? Clin Rheumatol 2017; 36:1935-1947. [PMID: 28725948 DOI: 10.1007/s10067-017-3744-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/28/2017] [Accepted: 06/28/2017] [Indexed: 12/28/2022]
Abstract
Most rheumatic diseases are complex or multifactorial entities with pathogeneses that interact with both multiple genetic factors and a high number of diverse environmental factors. Knowledge of the human genome sequence and its diversity among populations has provided a crucial step forward in our understanding of genetic diseases, identifying many genetic loci or genes associated with diverse phenotypes. In general, susceptibility to autoimmunity is associated with multiple risk factors, but the mechanism of the environmental component influence is poorly understood. Studies in twins have demonstrated that genetics do not explain the totality of the pathogenesis of rheumatic diseases. One method of modulating gene expression through environmental effects is via epigenetic modifications. These techniques open a new field for identifying useful new biomarkers and therapeutic targets. In this context, the development of "-omics" techniques is an opportunity to progress in our knowledge of complex diseases, impacting the discovery of new potential biomarkers suitable for their introduction into clinical practice. In this review, we focus on the recent advances in the fields of genomics and epigenomics in rheumatic diseases and their potential to be useful for the diagnosis, follow-up, and treatment of these diseases. The ultimate aim of genomic studies in any human disease is to understand its pathogenesis, thereby enabling the prediction of the evolution of the disease to establish new treatments and address the development of personalized therapies.
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19
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Zhang M, Fang X, Wang GS, Ma Y, Jin L, Li XM, Li XP. Ultraviolet B decreases DNA methylation level of CD4+ T cells in patients with systemic lupus erythematosus. Inflammopharmacology 2017; 25:203-210. [PMID: 28190128 DOI: 10.1007/s10787-017-0321-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/21/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE In the present study, DNA methylation level of CD4+ T cells exposed to ultraviolet B (UVB) was investigated and its potential mechanisms were also explored. METHODS CD4+ T cells from 12 cases of healthy subjects and 33 cases of SLE patients were isolated and exposed to different dosages (0, 50, 100 mJ/cm2) of UVB. Further, SLE patients were divided into two groups: active SLE group (22 cases, SLEDAI scores >4) and inactive SLE group (11 cases, SLEDAI scores ≤4). DNA methylation was evaluated by the Methylamp™ Global DNA Methylation Quantification Ultra Kit. The mRNA and protein expression levels of DNA methyltransferases (DNMT1 and DNMT3A) were detected by real-time PCR and western blot, respectively. RESULTS The levels of DNA methylation and DNMT3A mRNA in SLE patients were significantly decreased compared with those in healthy subjects at baseline. After different dosages of ultraviolet irradiation (0, 50 and 100 mJ/cm2), DNA methylation levels of CD4+ T cells were all reduced in a dose-dependent manner in three subgroups. Additionally, 100 mJ/cm2 ultraviolet irradiation in active SLE group contributed to a significant decrease of both DNA methylation and DNMT3A mRNA levels in CD4+ T cells. UVB exposure had no significant effects on expression levels of DNMT1 mRNA and protein and DNMT3A protein. CONCLUSION UVB decreases DNA methylation level of CD4+ T cells in SLE patients probably via inhibiting DNMT3A mRNA expression level, which needs to be further explored.
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Affiliation(s)
- Min Zhang
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Xuan Fang
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Guo-Sheng Wang
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Yan Ma
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Li Jin
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Xiao-Mei Li
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China
| | - Xiang-Pei Li
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Anhui Medical University, No. 17 Lujiang Road, Hefei, 230001, People's Republic of China.
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20
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Lai NS, Koo M, Yu CL, Lu MC. Immunopathogenesis of systemic lupus erythematosus and rheumatoid arthritis: the role of aberrant expression of non-coding RNAs in T cells. Clin Exp Immunol 2017; 187:327-336. [PMID: 27880973 DOI: 10.1111/cei.12903] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 12/27/2022] Open
Abstract
Non-coding RNAs (ncRNAs), including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), are RNA molecules that do not translate into protein. Both miRNAs and lncRNAs are known to regulate gene expression and to play an essential role in T cell differentiation and function. Both systemic lupus erythematosus (SLE), a prototypic systemic autoimmune disease, and rheumatoid arthritis (RA), a representative disease of inflammatory arthritis, are characterized by a complex dysfunction in the innate and adaptive immunity. T cells play a central role in cell-mediated immune response and multiple defects in T cells from patients with SLE and RA have been observed. Abnormality in T cell signalling, cytokine and chemokine production, T cell activation and apoptosis, T cell differentiation and DNA methylation that are associated closely with the aberrant expression of a number of miRNAs and lncRNAs have been implicated in the immunopathogenesis of SLE and RA. This review aims to provide an overview of the current state of research on the abnormal expression of miRNAs and lncRNAs in T cells and their roles in the immunopathogenesis of SLE and RA. In addition, by comparing the differences in aberrant expression of miRNAs and lncRNAs in T cells between patients with SLE and RA, controversial areas are highlighted that warrant further investigation.
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Affiliation(s)
- N-S Lai
- Division of Allergy, Immunology and Rheumatology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - M Koo
- Department of Medical Research, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan.,Dalla Lana School of Public Health, University of Toronto, Ontario, Canada
| | - C-L Yu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei City, Taiwan
| | - M-C Lu
- Division of Allergy, Immunology and Rheumatology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
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21
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Wu H, Huang X, Qiu H, Zhao M, Liao W, Yuan S, Xie Y, Dai Y, Chang C, Yoshimura A, Lu Q. High salt promotes autoimmunity by TET2-induced DNA demethylation and driving the differentiation of Tfh cells. Sci Rep 2016; 6:28065. [PMID: 27325182 PMCID: PMC4914849 DOI: 10.1038/srep28065] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/31/2016] [Indexed: 01/01/2023] Open
Abstract
Follicular helper T cells (Tfh) have been well documented to play a critical role in autoimmunity, such as systemic lupus erythematosus (SLE), by helping B cells. In this study, high salt (sodium chloride, NaCl), under physiological conditions, was demonstrated to increase the differentiation of Tfh. A high-salt diet markedly increased lupus features in MRL/lpr mice. The mechanism is NaCl-induced DNA demethylation via the recruitment of the hydroxytransferase Ten-Eleven Translocation 2 (TET2). Gene silencing of TET2 obviously diminished NaCl-induced Tfh cell polarization in vitro. In addition, the gene expression of sh2d1a, map3k1, spn and stat5b was enhanced after NaCl treatment, consistent with the findings in lupus CD4(+)T cells. However, only spn was directly regulated by TET2, and spn was not the sole target for NaCl. Our findings not only explain the epigenetic mechanisms of high-salt induced autoimmunity but also provide an attractive molecular target for intervention strategies of patients.
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Affiliation(s)
- Haijing Wu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xin Huang
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hong Qiu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ming Zhao
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Liao
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuguang Yuan
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yubing Xie
- Changsha Blood Center, Changsha, Hunan, China
| | - Yong Dai
- Clinical medical research center, the Second Clinical medical college of Jinan University (Shenzhen People's Hospital), Shenzhen, Guangdong, China
| | - Christopher Chang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Davis, USA
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Qianjin Lu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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22
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Zhao M, Wang J, Liao W, Li D, Li M, Wu H, Zhang Y, Gershwin ME, Lu Q. Increased 5-hydroxymethylcytosine in CD4 + T cells in systemic lupus erythematosus. J Autoimmun 2016; 69:64-73. [DOI: 10.1016/j.jaut.2016.03.001] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 02/26/2016] [Accepted: 03/01/2016] [Indexed: 12/16/2022]
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23
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Specific HDAC6 inhibition by ACY-738 reduces SLE pathogenesis in NZB/W mice. Clin Immunol 2015; 162:58-73. [PMID: 26604012 DOI: 10.1016/j.clim.2015.11.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 11/13/2015] [Accepted: 11/17/2015] [Indexed: 01/30/2023]
Abstract
We sought to determine if a selective HDAC6 inhibitor (ACY-738) decreases disease in NZB/W mice. From 22 to 38weeks-of-age, mice were injected intraperitoneally with 5 or 20mg/kg of ACY-738, or vehicle control. Body weight and proteinuria were measured every 2weeks, while sera anti-dsDNA, Ig isotypes, and cytokine levels were measured every 4weeks. Kidney disease was determined by evaluation of sera, urine, immune complex deposition, and renal pathology. Flow cytometric analysis assessed thymic, splenic, bone marrow, and peripheral lymphocyte differentiation patterns. Our results showed HDAC6 inhibition decreased SLE disease by inhibiting immune complex-mediated glomerulonephritis, sera anti-dsDNA levels, and inflammatory cytokine production and increasing splenic Treg cells. Inhibition of HDAC6 increased the percentage of cells in the early-stage developmental fractions of both pro- and pre-B cells. These results suggest that specific HDAC6 inhibition may be able to decrease SLE disease by altering aberrant T and B cell differentiation.
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