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Zedan MM, Sobh A, Magdy A, Korkor MS, Attia ZR, Khaled N, Sadeq Y, El-Nagdy AH, Taha AE, Noureldin MA, Taman M, Mosa DM, Elnagdy MH. Long noncoding RNAs (CTC-471J1.2, NeST) as epigenetic risk factors of active juvenile lupus nephritis: a case-control study. Pediatr Rheumatol Online J 2024; 22:48. [PMID: 38678299 PMCID: PMC11055315 DOI: 10.1186/s12969-023-00945-1] [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: 10/09/2023] [Accepted: 12/15/2023] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Measurement of the circulating levels of long-non-coding RNAs (lncRNAs) in lupus nephritis (LN) patients could dramatically explore more insights about the disease pathogenesis. Hence, we aimed to quantify the level of expression of CTC-471J1.2 and NeST in LN patients and to correlate it with the disease activity. METHOD This case-control study was conducted on a group of children with juvenile LN attending to Mansoura University Children's Hospital (MUCH). Demographics, clinical, and laboratory findings were collected besides the measurement of lncRNAs by quantitative real-time PCR. RESULTS The expression level of lncRNAs-CTC-471J1.2 was significantly down-regulated in children with active LN versus inactive cases or controls. In contrast, the NeST was significantly up-regulated in active LN cases. A significant correlation was found between CTC-471J1.2 expression and LN activity parameters. Additionally, both lncRNAs showed a reasonable sensitivity and specificity in differentiation of active LN. A regression analysis model revealed that CTC-471J1.2 and NeST were independent predictors of active nephritis. CONCLUSION The expression level of circulatory lncRNAs-CTC-471J1.2 and NeST can be used as sensitive and specific biomarkers for active LN. Furthermore, both could serve as predictors for nephritis activity.
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Affiliation(s)
- Mohamed M Zedan
- Department of Pediatrics, Mansoura University Children's Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Ali Sobh
- Department of Pediatrics, Mansoura University Children's Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Alshimaa Magdy
- Department of Medical Biochemistry and Molecular Biology, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Mai S Korkor
- Department of Pediatrics, Mansoura University Children's Hospital, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Zeinab R Attia
- Mansoura University Children's Hospital, Mansoura University, Mansoura, Egypt
| | - Nada Khaled
- Department of Clinical Pathology, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Yousra Sadeq
- Department of Clinical Pathology, Mansoura University Faculty of Medicine, Mansoura, Egypt
| | - Ahmed Hazem El-Nagdy
- Department of Microbiology, Faculty of Dentistry, Horus University, Damietta El Gadeeda, Egypt
| | - Ahmed E Taha
- Medical Microbiology and Immunology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Microbiology and Immunology Unit, Department of Pathology, College of Medicine, Jouf University, Sakaka, 72388, Saudi Arabia
| | | | - Mohamed Taman
- Department of Obstetrics and Gynecology, Mansoura University Hospital, Mansoura Faculty of Medicine, Mansoura, Egypt
| | - Doaa Mosad Mosa
- Department of Rheumatology& Rehabilitation, Mansoura University Hospitals, Mansoura University Faculty of Medicine, 60 Elgomhoria St, Mansoura, 35516, Egypt.
| | - Marwa H Elnagdy
- Department of Medical Biochemistry and Molecular Biology, Mansoura University Faculty of Medicine, Mansoura, Egypt
- Department of Basic Medical Sciences, Faculty of Medicine, New Mansoura University, Mansoura, Egypt
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Sestan M, Kifer N, Arsov T, Cook M, Ellyard J, Vinuesa CG, Jelusic M. The Role of Genetic Risk Factors in Pathogenesis of Childhood-Onset Systemic Lupus Erythematosus. Curr Issues Mol Biol 2023; 45:5981-6002. [PMID: 37504294 PMCID: PMC10378459 DOI: 10.3390/cimb45070378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/09/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
The pathogenesis of childhood-onset systemic lupus erythematosus (cSLE) is complex and not fully understood. It involves three key factors: genetic risk factors, epigenetic mechanisms, and environmental triggers. Genetic factors play a significant role in the development of the disease, particularly in younger individuals. While cSLE has traditionally been considered a polygenic disease, it is now recognized that in rare cases, a single gene mutation can lead to the disease. Although these cases are uncommon, they provide valuable insights into the disease mechanism, enhance our understanding of pathogenesis and immune tolerance, and facilitate the development of targeted treatment strategies. This review aims to provide a comprehensive overview of both monogenic and polygenic SLE, emphasizing the implications of specific genes in disease pathogenesis. By conducting a thorough analysis of the genetic factors involved in SLE, we can improve our understanding of the underlying mechanisms of the disease. Furthermore, this knowledge may contribute to the identification of effective biomarkers and the selection of appropriate therapies for individuals with SLE.
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Affiliation(s)
- Mario Sestan
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Nastasia Kifer
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Todor Arsov
- Faculty of Medical Sciences, University Goce Delchev, 2000 Shtip, North Macedonia
- The Francis Crick Institute, London NW1 1AT, UK
| | - Matthew Cook
- Department of Immunology and Infectious Diseases, The John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
- Department of Medicine, University of Cambridge, Cambridge CB2 1TN, UK
| | - Julia Ellyard
- Department of Immunology and Infectious Diseases, The John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | | | - Marija Jelusic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
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Juárez-Melchor D, Munguía-Realpozo P, Mendoza-Pinto C, Etchegaray-Morales I, Ayón-Aguilar J, Mendez-Martínez S, García-Carrasco M, Granados Arriola J. Genetic component of autoimmune rheumatological diseases. REUMATOLOGIA CLINICA 2022; 18:614-620. [PMID: 34953732 DOI: 10.1016/j.reumae.2021.08.001] [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: 07/27/2021] [Accepted: 08/02/2021] [Indexed: 06/14/2023]
Abstract
The purpose of this review is to present the main aspects of the genetic component of autoimmune rheumatic diseases, including the characteristics of the multifactorial or polygenic inheritance model, and its monogenic forms, as well as the main associated genes in both cases. The epigenetic changes involved, and the influence of the environment and sex that confer greater risk to women suffering from any of these diseases. Finally, to make known the advances that the study of omic sciences has allowed, opening the way to a new molecular classification of these diseases, aimed at personalized medicine. A review of the literature of the last 5 years, of English-language publications, in the PubMed database was performed and 28 review articles, and 19 original articles were included. Knowledge of the genetic factors involved in the aetiology of autoimmune rheumatic diseases, thanks to the availability of molecular studies, allows a better understanding of their pathophysiology and the possibility of diagnosis and treatment based on molecular markers in the future.
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Affiliation(s)
- Daniela Juárez-Melchor
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico; Departamento de Genética, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Pamela Munguía-Realpozo
- Departamento de Reumatología, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Claudia Mendoza-Pinto
- Departamento de Reumatología, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico; Unidad de Investigación de Enfermedades Autoinmunes Sistémicas, CIBIOR-Hospital de Especialidades UMAE, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Ivet Etchegaray-Morales
- Departamento de Reumatología, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Jorge Ayón-Aguilar
- Coordinador Médico de Investigación en Salud, Instituto Mexicano del Seguro Social, Delegación Puebla, Mexico
| | - Socorro Mendez-Martínez
- Coordinación de Planeación y Enlace Institucional, Instituto Mexicano del Seguro Social, Delegación Puebla, Mexico
| | - Mario García-Carrasco
- Departamento de Reumatología, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico.
| | - Julio Granados Arriola
- División de Inmunogenética, Departamento de Trasplantes, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Lv X, Liu X, Zhao M, Wu H, Zhang W, Lu Q, Chen X. RNA Methylation in Systemic Lupus Erythematosus. Front Cell Dev Biol 2021; 9:696559. [PMID: 34307373 PMCID: PMC8292951 DOI: 10.3389/fcell.2021.696559] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/28/2021] [Indexed: 12/18/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease with complicated clinical manifestations. Although our understanding of the pathogenesis of SLE has greatly improved, the understanding of the pathogenic mechanisms of SLE is still limited by disease heterogeneity, and targeted therapy is still unavailable. Substantial evidence shows that RNA methylation plays a vital role in the mechanisms of the immune response, prompting speculation that it might also be related to the occurrence and development of SLE. RNA methylation has been a hot topic in the field of epigenetics in recent years. In addition to revealing the modification process, relevant studies have tried to explore the relationship between RNA methylation and the occurrence and development of various diseases. At present, some studies have provided evidence of a relationship between RNA methylation and SLE pathogenesis, but in-depth research and analysis are lacking. This review will start by describing the specific mechanism of RNA methylation and its relationship with the immune response to propose an association between RNA methylation and SLE pathogenesis based on existing studies and then discuss the future direction of this field.
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Affiliation(s)
- Xinyi Lv
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiaomin Liu
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Ming Zhao
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Haijing Wu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Wuiguang Zhang
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Qianjin Lu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiangmei Chen
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
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5
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Zhen Y, Smith RD, Finkelman FD, Shao WH. Ezh2-mediated epigenetic modification is required for allogeneic T cell-induced lupus disease. Arthritis Res Ther 2020; 22:133. [PMID: 32503684 PMCID: PMC7275547 DOI: 10.1186/s13075-020-02225-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 05/25/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The mechanisms involved in the pathogenesis of autoimmune disorders, including systemic lupus erythematosus (SLE), have not been fully elucidated. Some of these mechanisms involve epigenetic regulation of gene expression. The histone methyltransferase Ezh2 contributes to epigenetic regulation of gene expression, is highly expressed in germinal center (GC) B cells and follicular T helper (TFH) cells, and may be involved in lupus pathogenesis. METHODS The murine bm12 model of lupus-like chronic graft versus host disease (cGVHD) was induced by intra-peritoneal injection of negatively isolated allogeneic CD4+ T cells. Lupus-like disease development was monitored by ELISA determination of serum anti-dsDNA and anti-chromatin antibody titers. Immune cell activation and Ezh2 expression were evaluated by flow cytometry and Western blotting. RESULTS Decreased autoantibody production and GC formation are observed when Ezh2-deficient CD4+ T cells are used instead of wild-type (WT) to induce cGVHD and when mice that receive allogeneic WT donor T cells to induce cGVHD are treated with GSK503, an Ezh2-specific inhibitor. In the bm12 cGVHD model, WT donor T cells are normally fully activated 1 week after infusion into an allogeneic host, exhibit a TFH cell (PD-1hi/CXCR5hi) phenotype with upregulated Ezh2, and activate B cells to form germinal centers (GCs). In contrast, Ezh2-deficient donor T cells generate fewer TFH cells that fail to activate B cells or promote GC formation. Despite similar T-independent, LPS-induced B cell responses, OVA-immunized CD4.Ezh2-KO mice had a skewed low-affinity IgM phenotype in comparison to similarly treated WT mice. In addition, early after OVA immunization, more CD4+ T cells from B6.CD4.Ezh2-KO mice had a CD44lo/CD62Llo phenotype, which suggests arrested or delayed activation, than CD4+ T cells from ovalbumin-immunized B6.WT mice. CONCLUSION Ezh2 gene deletion or pharmacological Ezh2 inhibition suppresses autoantibody production and GC formation in bm12 lupus-like cGVHD and decreases affinity maturation and isotype switching in response to immunization with a T cell-dependent antigen. Ezh2 inhibition may be useful for the treatment of lupus and other autoimmune disorders.
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Affiliation(s)
- Yuxuan Zhen
- Division of Immunology, Allergy and Rheumatology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, 45267, USA
| | - Roger D Smith
- Department of Pathology, University of Cincinnati, Cincinnati, OH, 45267, USA
| | - Fred D Finkelman
- Division of Immunology, Allergy and Rheumatology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, 45267, USA.,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Wen-Hai Shao
- Division of Immunology, Allergy and Rheumatology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, 45267, USA.
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6
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Brant EJ, Rietman EA, Klement GL, Cavaglia M, Tuszynski JA. Personalized therapy design for systemic lupus erythematosus based on the analysis of protein-protein interaction networks. PLoS One 2020; 15:e0226883. [PMID: 32191711 PMCID: PMC7081981 DOI: 10.1371/journal.pone.0226883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 12/08/2019] [Indexed: 12/26/2022] Open
Abstract
We analyzed protein expression data for Lupus patients, which have been obtained from publicly available databases. A combination of systems biology and statistical thermodynamics approaches was used to extract topological properties of the associated protein-protein interaction networks for each of the 291 patients whose samples were used to provide the molecular data. We have concluded that among the many proteins that appear to play critical roles in this pathology, most of them are either ribosomal proteins, ubiquitination pathway proteins or heat shock proteins. We propose some of the proteins identified in this study to be considered for drug targeting.
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Affiliation(s)
- Elizabeth J. Brant
- Nephrology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, United States of America
| | - Edward A. Rietman
- BINDS lab, College of Information and Computer Sciences, University of Massachusetts Amherst, Amherst, Massachusetts, United States of America
- Department of Mechanical and Industrial Engineering, University of Mass, Amherst, Massachusetts, United States of America
| | | | | | - Jack A. Tuszynski
- DIMEAS, Politecnico di Torino, Torino, Italy
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta, Canada
- * E-mail:
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7
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Park S, Kim GW, Kwon SH, Lee JS. Broad domains of histone H3 lysine 4 trimethylation in transcriptional regulation and disease. FEBS J 2020; 287:2891-2902. [PMID: 31967712 DOI: 10.1111/febs.15219] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 12/23/2019] [Accepted: 01/17/2020] [Indexed: 12/11/2022]
Abstract
Histone modifications affect transcription by changing the chromatin structure. In particular, histone H3 lysine 4 trimethylation (H3K4me3) is one of the most recognized epigenetic marks of active transcription. While many studies have provided evidence of the correlation between H3K4me3 and active transcription, details regarding the mechanism involved remain unclear. The first study on the broad H3K4me3 domain was reported in 2014; subsequently, the function of this domain has been studied in various cell types. In this review, we summarized the recent studies on the role of the broad H3K4me3 domain in transcription, development, memory formation, and several diseases, including cancer and autoimmune diseases. The broadest H3K4me3 domains are associated with increased transcriptional precision of cell-type-specific genes related to cell identity and other essential functions. The broad H3K4me3 domain regulates maternal zygotic activation in early mammalian development. In systemic autoimmune diseases, high expression of immune-responsive genes requires the presence of the broad H3K4me3 domain in the promoter-proximal regions. Transcriptional repression of tumor-suppressor genes is associated with the shortening of the broad H3K4me3 domains in cancer cells. Additionally, the broad H3K4me3 domain interacts with the super-enhancer to regulate cancer-associated genes. During memory formation, H3K4me3 breadth is regulated in the hippocampus CA1 neurons. Taken together, these findings indicate that H3K4me3 breadth is essential for the regulation of the transcriptional output across multiple cell types.
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Affiliation(s)
- Shinae Park
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon, Korea.,Critical Zone Frontier Research Laboratory, Kangwon National University, Chuncheon, Korea
| | - Go Woon Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Korea
| | - So Hee Kwon
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Korea.,Department of Integrated OMICS for Biomedical Science, Yonsei University, Seoul, Korea
| | - Jung-Shin Lee
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon, Korea.,Critical Zone Frontier Research Laboratory, Kangwon National University, Chuncheon, Korea
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8
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Exploring the etiopathogenesis of systemic lupus erythematosus: a genetic perspective. Immunogenetics 2019; 71:283-297. [DOI: 10.1007/s00251-019-01103-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 01/07/2019] [Indexed: 12/27/2022]
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9
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Brănișteanu DE, Ianoşi SL, Dimitriu A, Stoleriu G, Oanţǎ A, Brănișteanu DC. Drug-induced Rowell syndrome, a rare and difficult to manage disease: A case report. Exp Ther Med 2017; 15:785-788. [PMID: 29434682 PMCID: PMC5777104 DOI: 10.3892/etm.2017.5557] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 05/05/2017] [Indexed: 12/19/2022] Open
Abstract
Rowell syndrome is defined as the association between lupus erythematosus, erythema multiforme-like lesions and characteristic immunological changes including positive tests for rheumatoid factor, speckled antinuclear antibody, positive anti-Ro or anti-La antibodies. The present report presents the case of a 45-year-old female patient who was previously diagnosed in January 2010 with terbinafine-induced subacute cutaneous lupus erythematosus and was admitted for a skin eruption consisting of erythematous-papular erythema multiforme-like lesions, primarily on the trunk and limbs. The associated symptoms consisted of fatigability, myalgia and gonalgia. In October 2015, the illness reoccurred ~1 week after the initiation of Helicobacter pylori eradication treatment. Anti-Ro antibodies, rheumatoid factor and antinuclear antibody tests were positive. Given the patient's medical history, clinical manifestations, and laboratory, histopathological and immunofluorescence microscopy findings, a diagnosis of Rowell syndrome was made. Systemic corticosteroids (methylprednisolone; 0.5 mg/kg/day) and immunomodulatory therapy (azathioprine; 50 mg/day) were administered with the associated medication (omeprazole, 20 mg/day; KCl, 1 g/day) and topical dermocorticoids (fluticasone propionate 0.05% cream; 1 application/day), with a favorable outcome. The major diagnostic criteria for Rowell syndrome are the presence of lupus erythematosus (acute, subacute or systemic), erythema multiforme-like lesions and positive testing for antinuclear antibodies. The minor diagnostic criteria for Rowell syndrome are chilblains, the presence of anti-Ro antibodies and positive testing for rheumatoid factor. A diagnosis of Rowell syndrome is made if the patient exhibits all major criteria and at least one minor criterion. The present case met all diagnostic criteria, excluding the presence of chilblains. Notably, in this case there was a co-occurrence of subacute lupus erythematosus and Rowell syndrome lesions, which was drug-induced.
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Affiliation(s)
- Daciana Elena Brănișteanu
- Department of Dermatology, Grigore T. Popa University of Medicine and Pharmacy, 700715 Iași, Romania
| | - Simona Laura Ianoşi
- Department of Dermatology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Andreea Dimitriu
- Department of Dermatology, Grigore T. Popa University of Medicine and Pharmacy, 700715 Iași, Romania
| | - Gabriela Stoleriu
- Department of Dermatology, Grigore T. Popa University of Medicine and Pharmacy, 700715 Iași, Romania
| | - Alexandru Oanţǎ
- Department of Dermatology, Transilvania University of Brașov, 500036 Brasov, Romania
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Ren J, Liao X, Vieson MD, Chen M, Scott R, Kazmierczak J, Luo XM, Reilly CM. Selective HDAC6 inhibition decreases early stage of lupus nephritis by down-regulating both innate and adaptive immune responses. Clin Exp Immunol 2017; 191:19-31. [PMID: 28876451 DOI: 10.1111/cei.13046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2017] [Indexed: 12/25/2022] Open
Abstract
We have demonstrated previously that histone deacetylase (HDAC6) expression is increased in animal models of systemic lupus erythematosus (SLE) and that inhibition of HDAC6 decreased disease. In our current studies, we tested if an orally active selective HDAC6 inhibitor would decrease disease pathogenesis in a lupus mouse model with established early disease. Additionally, we sought to delineate the cellular and molecular mechanism(s) of action of a selective HDAC6 inhibitor in SLE. We treated 20-week-old (early-disease) New Zealand Black (NZB)/White F1 female mice with two different doses of the selective HDAC6 inhibitor (ACY-738) for 5 weeks. As the mice aged, we determined autoantibody production and cytokine levels by enzyme-linked immunosorbent assay (ELISA) and renal function by measuring proteinuria. At the termination of the study, we performed a comprehensive analysis on B cells, T cells and innate immune cells using flow cytometry and examined renal tissue for immune-mediated pathogenesis using immunohistochemistry and immunofluorescence. Our results showed a reduced germinal centre B cell response, decreased T follicular helper cells and diminished interferon (IFN)-γ production from T helper cells in splenic tissue. Additionally, we found the IFN-α-producing ability of plasmacytoid dendritic cells was decreased along with immunoglobulin isotype switching and the generation of pathogenic autoantibodies. Renal tissue showed decreased immunoglobulin deposition and reduced inflammation as judged by glomerular and interstitial inflammation. Taken together, these studies show selective HDAC6 inhibition decreased several parameters of disease pathogenesis in lupus-prone mice. The decrease was due in part to inhibition of B cell development and response.
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Affiliation(s)
- J Ren
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - X Liao
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - M D Vieson
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - M Chen
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - R Scott
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - J Kazmierczak
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - X M Luo
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - C M Reilly
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.,Edward Via College of Osteopathic Medicine, Blacksburg, VA, USA
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11
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Xiang Z, Yang Y, Chang C, Lu Q. The epigenetic mechanism for discordance of autoimmunity in monozygotic twins. J Autoimmun 2017; 83:43-50. [PMID: 28412046 DOI: 10.1016/j.jaut.2017.04.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 04/05/2017] [Indexed: 12/12/2022]
Abstract
Monozygotic twins share an identical DNA sequence but are not truly "identical". In fact, when it comes to health and disease, they may often display some level of phenotypic discordance. The cause of this discordance is often unknown. Epigenetic modifications such as DNA methylation, histone modification, and microRNAs-mediated regulation regulate gene expression and are sensitive to external stimuli. These modifications may be seen to bridge the gap between genetics and the environment. Over the years, the importance of epigenetics as a primary mechanism for the role that the environment plays in defining phenotype has been increasingly appreciated. Mechanisms of epigenetics include DNA methylation, histone modifications and microRNAs. Discordance rates in monozygotic twins vary depending on the specific condition, from 11% in SLE to 64% in psoriasis and 77% in PBC. Other autoimmune diseases in which discordance is found among monozygotic twins has also been studied include type 1 diabetes, multiple sclerosis, rheumatoid arthritis, dermatomyositis and systemic sclerosis. In some cases, the differences in various epigenetic modifications is slight, even though the concordance rate is low, suggesting that epigenetics is not the only factor that needs to be considered. Nonetheless, the study of phenotypic discordance in monozygotic twins may shed light on the pathogenesis of autoimmune diseases and contribute to the development of new methodologies for the diagnosis and treatment of these diseases.
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Affiliation(s)
- Zhongyuan Xiang
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Yuanqing Yang
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Christopher Chang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, United States
| | - Qianjin Lu
- Department of Dermatology, Second Xiangya Hospital, Central South University, Hunan Key Laboratory of Medical Epigenomics, Changsha, Hunan, China.
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Hedrich CM, Mäbert K, Rauen T, Tsokos GC. DNA methylation in systemic lupus erythematosus. Epigenomics 2017; 9:505-525. [PMID: 27885845 PMCID: PMC6040049 DOI: 10.2217/epi-2016-0096] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 10/12/2016] [Indexed: 12/18/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease facilitated by aberrant immune responses directed against cells and tissues, resulting in inflammation and organ damage. In the majority of patients, genetic predisposition is accompanied by additional factors conferring disease expression. While the exact molecular mechanisms remain elusive, epigenetic alterations in immune cells have been demonstrated to play a key role in disease pathogenesis through the dysregulation of gene expression. Since epigenetic marks are dynamic, allowing cells and tissues to differentiate and adjust, they can be influenced by environmental factors and also be targeted in therapeutic interventions. Here, we summarize reports on DNA methylation patterns in SLE, underlying molecular defects and their effect on immune cell function. We discuss the potential of DNA methylation as biomarker or therapeutic target in SLE.
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Affiliation(s)
- Christian M Hedrich
- Pediatric Rheumatology & Immunology, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Katrin Mäbert
- Pediatric Rheumatology & Immunology, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Thomas Rauen
- Department of Nephrology & Clinical Immunology, RWTH University Hospital, Aachen, Germany
| | - George C Tsokos
- Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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The role of microRNA-31 and microRNA-21 as regulatory biomarkers in the activation of T lymphocytes of Egyptian lupus patients. Rheumatol Int 2016; 36:1617-1625. [PMID: 27510529 DOI: 10.1007/s00296-016-3550-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 08/03/2016] [Indexed: 12/17/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by familial aggregation and genetic predisposition. MicroRNAs (MiRNAs) serve as critical biomarkers in lupus patients because of their aberrant expression in different SLE stages. The study aimed to investigate the correlation of miR-31 and miR-21 with IL-2 in SLE patients as regulatory biomarkers in the activation of T lymphocytes of Egyptian lupus patients. Quantitative RT-PCR is carried out to estimate the expressions of miR-31 and miR-21, and IL-2 levels were determined using ELISA in plasma of 40 patients with SLE, 20 of their first-degree relatives and 20 healthy controls. The study also determined the systemic lupus erythematosus disease activity index (SLEDAI) score and proteinuria in SLE patients. The results revealed that miR-31 was lower expressed, while miR-21 was high expressed in SLE patients compared to their first-degree relatives and controls. MiR-31 was negatively correlated with SLEDAI and proteinuria in lupus patients, while miR-21 showed positive correlation with them. Also we found that there is a significant positive correlation between miR-31 and IL-2 in SLE patients, while miR-21 was negatively correlated with IL-2 level in patients. In conclusion, the study disclosed a significant association between miR-31 and miR-21 expression with IL-2 level in SLE patients. The regulatory biomarkers of miR-31 and miR-21 might have an impact on regulating IL-2 pathway expression and in turn on the activation of T lymphocytes in SLE.
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