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Wang L, Zhang L, Chen F, Li Q, Zhu B, Tang Y, Yang Z, Cheng C, Qiu L, Ma L. Polymerized Network-Based Artificial Peroxisome Reprogramming Macrophages for Photoacoustic Imaging-Guided Treatment of Rheumatoid Arthritis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:25856-25868. [PMID: 38726921 DOI: 10.1021/acsami.4c04000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Artificial peroxisomes (AP) with enzyme-mimetic catalytic activity and recruitment ability have drawn a great deal of attention in fabricating protocell systems for scavenging reactive oxygen species (ROS), modulating the inflammatory microenvironment, and reprogramming macrophages, which is of great potential in treating inflammatory diseases such as rheumatoid arthritis (RA). Herein, a macrophage membrane-cloaked Cu-coordinated polyphthalocyanine-based AP (CuAP) is prepared with a macrocyclic conjugated polymerized network and embedded Cu-single atomic active center, which mimics the catalytic activity and coordination environment of natural superoxide dismutase and catalase, possesses the inflammatory recruitment ability of macrophages, and performs photoacoustic imaging (PAI)-guided treatment. The results of both in vitro cellular and in vivo animal experiments demonstrated that the CuAP under ultrasound and microbubbles could efficiently scavenge excess ROS in cells and tissues, modulate microenvironmental inflammatory cytokines such as interleukin-1β, tumor necrosis factor-α, and arginase-1, and reprogram macrophages by polarization of M1 (proinflammatory phenotype) to M2 (anti-inflammatory phenotype). We believe this study offers a proof of concept for engineering multifaceted AP and a promising approach for a PAI-guided treatment platform for RA.
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Affiliation(s)
- Liyun Wang
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lingyan Zhang
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Fan Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Bihui Zhu
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yuanjiao Tang
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhengbao Yang
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Li Qiu
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lang Ma
- Department of Medical Ultrasound, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
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Tan PR, Lee AJL, Zhao JJ, Chan YH, Fu JH, Ma M, Tay SH. Higher odds of periodontitis in systemic lupus erythematosus compared to controls and rheumatoid arthritis: a systematic review, meta-analysis and network meta-analysis. Front Immunol 2024; 15:1356714. [PMID: 38629069 PMCID: PMC11019014 DOI: 10.3389/fimmu.2024.1356714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024] Open
Abstract
Introduction Periodontitis as a comorbidity in systemic lupus erythematosus (SLE) is still not well recognized in the dental and rheumatology communities. A meta-analysis and network meta-analysis were thus performed to compare the (i) prevalence of periodontitis in SLE patients compared to those with rheumatoid arthritis (RA) and (ii) odds of developing periodontitis in controls, RA, and SLE. Methods Pooled prevalence of and odds ratio (OR) for periodontitis were compared using meta-analysis and network meta-analysis (NMA). Results Forty-three observational studies involving 7,800 SLE patients, 49,388 RA patients, and 766,323 controls were included in this meta-analysis. The pooled prevalence of periodontitis in SLE patients (67.0%, 95% confidence interval [CI] 57.0-77.0%) was comparable to that of RA (65%, 95% CI 55.0-75.0%) (p>0.05). Compared to controls, patients with SLE (OR=2.64, 95% CI 1.24-5.62, p<0.01) and RA (OR=1.81, 95% CI 1.25-2.64, p<0.01) were more likely to have periodontitis. Indirect comparisons through the NMA demonstrated that the odds of having periodontitis in SLE was 1.49 times higher compared to RA (OR=1.49, 95% CI 1.09-2.05, p<0.05). Discussion Given that RA is the autoimmune disease classically associated with periodontal disease, the higher odds of having periodontitis in SLE are striking. These results highlight the importance of addressing the dental health needs of patients with SLE. Systematic review registration https://www.crd.york.ac.uk/PROSPERO/ identifier CRD42021272876.
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Affiliation(s)
- Ping Ren Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Aaron J. L. Lee
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Joseph J. Zhao
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yiong Huak Chan
- Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jia Hui Fu
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Margaret Ma
- Division of Rheumatology, Department of Medicine, National University Hospital, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sen Hee Tay
- Division of Rheumatology, Department of Medicine, National University Hospital, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Wang Y, Riaz F, Wang W, Pu J, Liang Y, Wu Z, Pan S, Song J, Yang L, Zhang Y, Wu H, Han F, Tang J, Wang X. Functional significance of DNA methylation: epigenetic insights into Sjögren's syndrome. Front Immunol 2024; 15:1289492. [PMID: 38510251 PMCID: PMC10950951 DOI: 10.3389/fimmu.2024.1289492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 02/15/2024] [Indexed: 03/22/2024] Open
Abstract
Sjögren's syndrome (SjS) is a systemic, highly diverse, and chronic autoimmune disease with a significant global prevalence. It is a complex condition that requires careful management and monitoring. Recent research indicates that epigenetic mechanisms contribute to the pathophysiology of SjS by modulating gene expression and genome stability. DNA methylation, a form of epigenetic modification, is the fundamental mechanism that modifies the expression of various genes by modifying the transcriptional availability of regulatory regions within the genome. In general, adding a methyl group to DNA is linked with the inhibition of genes because it changes the chromatin structure. DNA methylation changes the fate of multiple immune cells, such as it leads to the transition of naïve lymphocytes to effector lymphocytes. A lack of central epigenetic enzymes frequently results in abnormal immune activation. Alterations in epigenetic modifications within immune cells or salivary gland epithelial cells are frequently detected during the pathogenesis of SjS, representing a robust association with autoimmune responses. The analysis of genome methylation is a beneficial tool for establishing connections between epigenetic changes within different cell types and their association with SjS. In various studies related to SjS, most differentially methylated regions are in the human leukocyte antigen (HLA) locus. Notably, the demethylation of various sites in the genome is often observed in SjS patients. The most strongly linked differentially methylated regions in SjS patients are found within genes regulated by type I interferon. This demethylation process is partly related to B-cell infiltration and disease progression. In addition, DNA demethylation of the runt-related transcription factor (RUNX1) gene, lymphotoxin-α (LTA), and myxovirus resistance protein A (MxA) is associated with SjS. It may assist the early diagnosis of SjS by serving as a potential biomarker. Therefore, this review offers a detailed insight into the function of DNA methylation in SjS and helps researchers to identify potential biomarkers in diagnosis, prognosis, and therapeutic targets.
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Affiliation(s)
- Yanqing Wang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Farooq Riaz
- Center for Cancer Immunology, Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Wei Wang
- Department of Radiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jincheng Pu
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yuanyuan Liang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhenzhen Wu
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Shengnan Pan
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiamin Song
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Lufei Yang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Youwei Zhang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Huihong Wu
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Fang Han
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jianping Tang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xuan Wang
- Department of Rheumatology and Immunology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
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Kocyigit E, Abdurakhmanov R, Kocyigit BF. Potential role of camel, mare milk, and their products in inflammatory rheumatic diseases. Rheumatol Int 2024; 44:425-434. [PMID: 38183445 PMCID: PMC10867071 DOI: 10.1007/s00296-023-05516-x] [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: 11/01/2023] [Accepted: 12/01/2023] [Indexed: 01/08/2024]
Abstract
Milk and dairy products serve as a significant dietary component for people all over the world. Milk is a source of essential nutrients such as carbohydrates, protein, fats, and water that support newborns' growth, development, and physiological processes. Milk contains various essential biological compounds that contribute to overall health and well-being. These compounds are crucial in immune system regulation, bone health, and gut microbiota. Milk and dairy products are primarily from cows, buffalos, goats, and sheep. Recently, there has been a notable increase in camel and mare milk consumption and its associated products due to an increasing attraction to ethnic cuisines and a greater awareness of food biodiversity. Camel and mare milk possess diverse nutritional and therapeutic properties, displaying potential functional foods. Camel milk has been linked to various health advantages, encompassing antihypertensive, antidiabetic, antiallergic, anticarcinogenic, antioxidant, and immunomodulatory properties. Camel milk has exhibited notable efficacy in mitigating inflammation and oxidative stress, potentially offering therapeutic benefits for inflammatory disorders. Nevertheless, although extensively recorded, the potential health benefits of mare's milk have yet to be investigated, including its impact on inflammatory conditions. This article highlights the therapeutic potential of camel and mare milk and its derived products in treating inflammatory rheumatic disorders, specifically focusing on their anti-inflammatory and immune-regulatory capabilities. These alternative types of milk, which do not come from cows, offer potential avenues for investigating innovative strategies to regulate and reduce inflammatory conditions.
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Affiliation(s)
- Emine Kocyigit
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Ordu University, 52200, Ordu, Turkey.
| | - Ruslan Abdurakhmanov
- Department of Biology and Biochemistry, South Kazakhstan Medical Academy, Shymkent, Kazakhstan
| | - Burhan Fatih Kocyigit
- Department of Physical Medicine and Rehabilitation, University of Health Sciences, Adana Health Practice and Research Center, Adana, Turkey
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Swarnkar G, Semenkovich NP, Arra M, Mims DK, Naqvi SK, Peterson T, Mbalaviele G, Wu CL, Abu-Amer Y. DNA hypomethylation ameliorates erosive inflammatory arthritis by modulating interferon regulatory factor-8. Proc Natl Acad Sci U S A 2024; 121:e2310264121. [PMID: 38319963 PMCID: PMC10873594 DOI: 10.1073/pnas.2310264121] [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: 06/22/2023] [Accepted: 01/08/2024] [Indexed: 02/08/2024] Open
Abstract
Epigenetic regulation plays a crucial role in the pathogenesis of autoimmune diseases such as inflammatory arthritis. DNA hypomethylating agents, such as decitabine (DAC), have been shown to dampen inflammation and restore immune homeostasis. In the present study, we demonstrate that DAC elicits potent anti-inflammatory effects and attenuates disease symptoms in several animal models of arthritis. Transcriptomic and epigenomic profiling show that DAC-mediated hypomethylation regulates a wide range of cell types in arthritis, altering the differentiation trajectories of anti-inflammatory macrophage populations, regulatory T cells, and tissue-protective synovial fibroblasts (SFs). Mechanistically, DAC-mediated demethylation of intragenic 5'-Cytosine phosphate Guanine-3' (CpG) islands of the transcription factor Irf8 (interferon regulatory factor 8) induced its re-expression and promoted its repressor activity. As a result, DAC restored joint homeostasis by resetting the transcriptomic signature of negative regulators of inflammation in synovial macrophages (MerTK, Trem2, and Cx3cr1), TREGs (Foxp3), and SFs (Pdpn and Fapα). In conclusion, we found that Irf8 is necessary for the inhibitory effect of DAC in murine arthritis and that direct expression of Irf8 is sufficient to significantly mitigate arthritis.
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Affiliation(s)
- Gaurav Swarnkar
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO63110
| | | | - Manoj Arra
- Department of Emergency Medicine, Washington University School of Medicine, St. Louis, MO63110
| | - Dorothy K. Mims
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO63110
| | - Syeda Kanwal Naqvi
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO63110
| | - Timothy Peterson
- Department of Medicine, Washington University School of Medicine, St. Louis, MO63110
- HealthSpan Technologies, Inc, St. Louis, MO63110
| | - Gabriel Mbalaviele
- Department of Medicine, Washington University School of Medicine, St. Louis, MO63110
| | - Chia-Lung Wu
- Department of Orthopedics and Physical Performance, University of Rochester, Rochester, NY14642
| | - Yousef Abu-Amer
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO63110
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO63110
- Shriners Hospital for Children, St. Louis, MO63110
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Yan L, Gu C, Gao S, Wei B. Epigenetic regulation and therapeutic strategies in ulcerative colitis. Front Genet 2023; 14:1302886. [PMID: 38169708 PMCID: PMC10758477 DOI: 10.3389/fgene.2023.1302886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024] Open
Abstract
Ulcerative colitis (UC) is an inflammatory bowel disease, and is characterized by the diffuse inflammation and ulceration in the colon and rectum mucosa, even extending to the caecum. Epigenetic modifications, including DNA methylations, histone modifications and non-coding RNAs, are implicated in the differentiation, maturation, and functional modulation of multiple immune and non-immune cell types, and are influenced and altered in various chronic inflammatory diseases, including UC. Here we review the relevant studies revealing the differential epigenetic features in UC, and summarize the current knowledge about the immunopathogenesis of UC through epigenetic regulation and inflammatory signaling networks, regarding DNA methylation, histone modification, miRNAs and lncRNAs. We also discuss the epigenetic-associated therapeutic strategies for the alleviation and treatment of UC, which will provide insights to intervene in the immunopathological process of UC in view of epigenetic regulation.
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Affiliation(s)
- Liwei Yan
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, China
- Departments of Anorectal Surgery, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chao Gu
- Departments of Anorectal Surgery, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Shanyu Gao
- Departments of Anorectal Surgery, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Benzheng Wei
- Center for Medical Artificial Intelligence, Shandong University of Traditional Chinese Medicine, Jinan, China
- Qingdao Academy of Chinese Medical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, China
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7
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Xiao D, Fang L, Liu Z, He Y, Ying J, Qin H, Lu A, Shi M, Li T, Zhang B, Guan J, Wang C, Abu-Amer Y, Shen J. DNA methylation-mediated Rbpjk suppression protects against fracture nonunion caused by systemic inflammation. J Clin Invest 2023; 134:e168558. [PMID: 38051594 PMCID: PMC10849763 DOI: 10.1172/jci168558] [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: 01/04/2023] [Accepted: 11/30/2023] [Indexed: 12/07/2023] Open
Abstract
Challenging skeletal repairs are frequently seen in patients experiencing systemic inflammation. To tackle the complexity and heterogeneity of the skeletal repair process, we performed single-cell RNA sequencing and revealed that progenitor cells were one of the major lineages responsive to elevated inflammation and this response adversely affected progenitor differentiation by upregulation of Rbpjk in fracture nonunion. We then validated the interplay between inflammation (via constitutive activation of Ikk2, Ikk2ca) and Rbpjk specifically in progenitors by using genetic animal models. Focusing on epigenetic regulation, we identified Rbpjk as a direct target of Dnmt3b. Mechanistically, inflammation decreased Dnmt3b expression in progenitor cells, consequently leading to Rbpjk upregulation via hypomethylation within its promoter region. We also showed that Dnmt3b loss-of-function mice phenotypically recapitulated the fracture repair defects observed in Ikk2ca-transgenic mice, whereas Dnmt3b-transgenic mice alleviated fracture repair defects induced by Ikk2ca. Moreover, Rbpjk ablation restored fracture repair in both Ikk2ca mice and Dnmt3b loss-of-function mice. Altogether, this work elucidates a common mechanism involving a NF-κB/Dnmt3b/Rbpjk axis within the context of inflamed bone regeneration. Building on this mechanistic insight, we applied local treatment with epigenetically modified progenitor cells in a previously established mouse model of inflammation-mediated fracture nonunion and showed a functional restoration of bone regeneration under inflammatory conditions through an increase in progenitor differentiation potential.
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Affiliation(s)
- Ding Xiao
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Liang Fang
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Zhongting Liu
- Department of Mechanical Engineering & Materials Sciences, School of Engineering and
| | - Yonghua He
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Jun Ying
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Haocheng Qin
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- The Second Xiangya Hospital, Central South University, Changsha, China
| | - Aiwu Lu
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Meng Shi
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Tiandao Li
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Bo Zhang
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Jianjun Guan
- Department of Mechanical Engineering & Materials Sciences, School of Engineering and
| | - Cuicui Wang
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University, St. Louis, Missouri, USA
| | - Yousef Abu-Amer
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
- Shriners Hospital for Children, St. Louis, Missouri, USA
| | - Jie Shen
- Department of Orthopaedic Surgery, School of Medicine, Washington University, St. Louis, Missouri, USA
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Tavasolian F, Lively S, Pastrello C, Tang M, Lim M, Pacheco A, Qaiyum Z, Yau E, Baskurt Z, Jurisica I, Kapoor M, Inman RD. Proteomic and genomic profiling of plasma exosomes from patients with ankylosing spondylitis. Ann Rheum Dis 2023; 82:1429-1443. [PMID: 37532285 DOI: 10.1136/ard-2022-223791] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
INTRODUCTION Recent advances in understanding the biology of ankylosing spondylitis (AS) using innovative genomic and proteomic approaches offer the opportunity to address current challenges in AS diagnosis and management. Altered expression of genes, microRNAs (miRNAs) or proteins may contribute to immune dysregulation and may play a significant role in the onset and persistence of inflammation in AS. The ability of exosomes to transport miRNAs across cells and alter the phenotype of recipient cells has implicated exosomes in perpetuating inflammation in AS. This study reports the first proteomic and miRNA profiling of plasma-derived exosomes in AS using comprehensive computational biology analysis. METHODS Plasma samples from patients with AS and healthy controls (HC) were isolated via ultracentrifugation and subjected to extracellular vesicle flow cytometry analysis to characterise exosome surface markers by a multiplex immunocapture assay. Cytokine profiling of plasma-derived exosomes and cell culture supernatants was performed. Next-generation sequencing was used to identify miRNA populations in exosomes enriched from plasma fractions. CD4+ T cells were sorted, and the frequency and proliferation of CD4+ T-cell subsets were analysed after treatment with AS-exosomes using flow cytometry. RESULTS The expression of exosome marker proteins CD63 and CD81 was elevated in the patients with AS compared with HC (q<0.05). Cytokine profiling in plasma-derived AS-exosomes demonstrated downregulation of interleukin (IL)-8 and IL-10 (q<0.05). AS-exosomes cocultured with HC CD4+ T cells induced significant upregulation of IFNα2 and IL-33 (q<0.05). Exosomes from patients with AS inhibited the proliferation of regulatory T cells (Treg), suggesting a mechanism for chronically activated T cells in this disease. Culture of CD4+ T cells from healthy individuals in the presence of AS-exosomes reduced the proliferation of FOXP3+ Treg cells and decreased the frequency of FOXP3+IRF4+ Treg cells. miRNA sequencing identified 24 differentially expressed miRNAs found in circulating exosomes of patients with AS compared with HC; 22 of which were upregulated and 2 were downregulated. CONCLUSIONS Individuals with AS have different immunological and genetic profiles, as determined by evaluating the exosomes of these patients. The inhibitory effect of exosomes on Treg in AS suggests a mechanism contributing to chronically activated T cells in this disease.
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Affiliation(s)
- Fataneh Tavasolian
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Starlee Lively
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
- Osteoarthritis Research Program, Division of Orthopaedics, Schroeder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
| | - Chiara Pastrello
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
- Osteoarthritis Research Program, Division of Orthopaedics, Schroeder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
- Krembil Research Institute, - Data Science Discovery Centre for Chronic Diseases, University Health Network, Toronto, Ontario, Canada
| | - Michael Tang
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Melissa Lim
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Addison Pacheco
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Zoya Qaiyum
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Enoch Yau
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Zeynep Baskurt
- Department of Biostatistics, Princess Margaret Cancer Center, 610 University Ave, Toronto, Ontario, Canada
| | - Igor Jurisica
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
- Osteoarthritis Research Program, Division of Orthopaedics, Schroeder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
- Krembil Research Institute, - Data Science Discovery Centre for Chronic Diseases, University Health Network, Toronto, Ontario, Canada
- Departments of Medical Biophysics and Computer Science, and Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Mohit Kapoor
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
- Osteoarthritis Research Program, Division of Orthopaedics, Schroeder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
- Department of Surgery, Division of Orthopaedic Surgery and Department of Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Robert D Inman
- Schroeder Arthritis Institute, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
- Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Spondylitis Program, Division of Rheumatology, Schroeder Arthritis Institute, University Health Network, Toronto, Ontario, Canada
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Jeljeli MM, Adamopoulos IE. Innate immune memory in inflammatory arthritis. Nat Rev Rheumatol 2023; 19:627-639. [PMID: 37674048 PMCID: PMC10721491 DOI: 10.1038/s41584-023-01009-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2023] [Indexed: 09/08/2023]
Abstract
The concept of immunological memory was demonstrated in antiquity when protection against re-exposure to pathogens was observed during the plague of Athens. Immunological memory has been linked with the adaptive features of T and B cells; however, in the past decade, evidence has demonstrated that innate immune cells can exhibit memory, a phenomenon called 'innate immune memory' or 'trained immunity'. Innate immune memory is currently being defined and is transforming our understanding of chronic inflammation and autoimmunity. In this Review, we provide an up-to-date overview of the memory-like features of innate immune cells in inflammatory arthritis and the crosstalk between chronic inflammatory milieu and cell reprogramming. Aberrant pro-inflammatory signalling, including cytokines, regulates the metabolic and epigenetic reprogramming of haematopoietic progenitors, leading to exacerbated inflammatory responses and osteoclast differentiation, in turn leading to bone destruction. Moreover, imprinted memory on mature cells including terminally differentiated osteoclasts alters responsiveness to therapies and modifies disease outcomes, commonly manifested by persistent inflammatory flares and relapse following medication withdrawal.
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Affiliation(s)
- Maxime M Jeljeli
- Department of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Iannis E Adamopoulos
- Department of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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Zhao J, Xu L, Chang C, Jiang P, Wei K, Shi Y, Xu L, Zheng Y, Shan Y, Bian Y, Li L, Guo S, Schrodi SJ, Wang R, He D. Circulating methylation level of HTR2A is associated with inflammation and disease activity in rheumatoid arthritis. Front Immunol 2022; 13:1054451. [PMID: 36561742 PMCID: PMC9763304 DOI: 10.3389/fimmu.2022.1054451] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022] Open
Abstract
Objectives HTR2A is previously identified as a susceptibility gene for rheumatoid arthritis (RA). In this study, we performed the association analysis between DNA methylation of HTR2A with RA within peripheral blood samples. Methods We enrolled peripheral blood samples from 235 patients with RA, 30 osteoarthritis (OA) patients, and 30 healthy controls. The DNA methylation levels of about 218 bp from chr13: 46898190 to chr13: 46897973 (GRCh38/hg38) around HTR2A cg15692052 from patients were analyzed by targeted methylation sequencing. Results We measured methylation status for 7 CpGs in the promoter region of HTR2A and obseved overall methylation status are signficantly increased in RA compared with normal inviduals (FDR= 9.05 x 10-5). The average cg15692052 methylation levels (methylation score) showed a positive correlation with CRP (r=0.15, P=0.023). Compared with the OA group or HC group, the proportion of haplotypes CCCCCCC (FDR=0.02 and 2.81 x 10-6) is signficantly increased while TTTTTCC (FDR =0.01) and TTTTTTT(FDR =6.92 x 10-3) are significantly decreased in RA. We find methylation haplotypes combining with RF and CCP could signficantly enhance the performance of the diagnosing RA and its comorbidities (hypertension, interstitial lung disease, and osteoporosis), especially in interstitial lung disease. Conclusions In our study, we found signficant hypermethylation of promoter region of HTR2A which indicates the potential clinical diagnostic role in rheumatoid arthritis.
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Affiliation(s)
- Jianan Zhao
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Lingxia Xu
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Cen Chang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Ping Jiang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Kai Wei
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yiming Shi
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Linshuai Xu
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yixin Zheng
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yu Shan
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yanqin Bian
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China,Arthritis Institute of Integrated Traditional and Western medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
| | - Li Li
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China,Arthritis Institute of Integrated Traditional and Western medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
| | - Shicheng Guo
- Computation and Informatics in Biology and Medicine, University of Wisconsin-Madison, Madison, WI, United States,Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Steven J. Schrodi
- Computation and Informatics in Biology and Medicine, University of Wisconsin-Madison, Madison, WI, United States,Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Rongsheng Wang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Rongsheng Wang, ; Dongyi He,
| | - Dongyi He
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China,Arthritis Institute of Integrated Traditional and Western medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China,*Correspondence: Rongsheng Wang, ; Dongyi He,
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11
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Alsaleh G, Richter FC, Simon AK. Age-related mechanisms in the context of rheumatic disease. Nat Rev Rheumatol 2022; 18:694-710. [PMID: 36329172 DOI: 10.1038/s41584-022-00863-8] [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] [Accepted: 10/03/2022] [Indexed: 11/06/2022]
Abstract
Ageing is characterized by a progressive loss of cellular function that leads to a decline in tissue homeostasis, increased vulnerability and adverse health outcomes. Important advances in ageing research have now identified a set of nine candidate hallmarks that are generally considered to contribute to the ageing process and that together determine the ageing phenotype, which is the clinical manifestation of age-related dysfunction in chronic diseases. Although most rheumatic diseases are not yet considered to be age related, available evidence increasingly emphasizes the prevalence of ageing hallmarks in these chronic diseases. On the basis of the current evidence relating to the molecular and cellular ageing pathways involved in rheumatic diseases, we propose that these diseases share a number of features that are observed in ageing, and that they can therefore be considered to be diseases of premature or accelerated ageing. Although more data are needed to clarify whether accelerated ageing drives the development of rheumatic diseases or whether it results from the chronic inflammatory environment, central components of age-related pathways are currently being targeted in clinical trials and may provide a new avenue of therapeutic intervention for patients with rheumatic diseases.
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Affiliation(s)
- Ghada Alsaleh
- The Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK.
- Botnar Research Centre, NDORMS, University of Oxford, Oxford, UK.
| | - Felix C Richter
- The Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Anna K Simon
- The Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
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12
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Epigenetic regulation of B cells and its role in autoimmune pathogenesis. Cell Mol Immunol 2022; 19:1215-1234. [PMID: 36220996 PMCID: PMC9622816 DOI: 10.1038/s41423-022-00933-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/19/2022] [Indexed: 11/05/2022] Open
Abstract
B cells play a pivotal role in the pathogenesis of autoimmune diseases. Although previous studies have shown many genetic polymorphisms associated with B-cell activation in patients with various autoimmune disorders, progress in epigenetic research has revealed new mechanisms leading to B-cell hyperactivation. Epigenetic mechanisms, including those involving histone modifications, DNA methylation, and noncoding RNAs, regulate B-cell responses, and their dysregulation can contribute to the pathogenesis of autoimmune diseases. Patients with autoimmune diseases show epigenetic alterations that lead to the initiation and perpetuation of autoimmune inflammation. Moreover, many clinical and animal model studies have shown the promising potential of epigenetic therapies for patients. In this review, we present an up-to-date overview of epigenetic mechanisms with a focus on their roles in regulating functional B-cell subsets. Furthermore, we discuss epigenetic dysregulation in B cells and highlight its contribution to the development of autoimmune diseases. Based on clinical and preclinical evidence, we discuss novel epigenetic biomarkers and therapies for patients with autoimmune disorders.
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13
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Designing Studies for Epigenetic Biomarker Development in Autoimmune Rheumatic Diseases. RHEUMATOLOGY AND IMMUNOLOGY RESEARCH 2022; 3:103-110. [PMID: 36788968 PMCID: PMC9895872 DOI: 10.2478/rir-2022-0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/13/2022] [Indexed: 02/16/2023]
Abstract
In just a few years, the number of epigenetic studies in autoimmune rheumatic and inflammatory diseases has greatly increased. This is in part due to the need of identifying additional determinants to genetics to explain the pathogenesis and development of these disorders. In this regard, epigenetics provides potential mechanisms that determine gene function, are linked to environmental factors, and could explain a wide range of phenotypic variability among patients with these diseases. Despite the high interest and number of studies describing epigenetic alterations under these conditions and exploring their relationship to various clinical aspects, few of the proposed biomarkers have yet reached clinical practice. The potential of epigenetic markers is high, as these alterations link measurable features with a number of biological traits. In the present article, we present published studies in the field, discuss some frequent limitations in the existing research, and propose a number of considerations that should be taken into account by those starting new projects in the field, with an aim to generate biomarkers that could make it into the clinics.
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14
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A brief history of epigenetics. Immunol Lett 2022; 249:1-4. [DOI: 10.1016/j.imlet.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/29/2022] [Accepted: 08/01/2022] [Indexed: 11/20/2022]
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15
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Julià A, Gómez A, López-Lasanta M, Blanco F, Erra A, Fernández-Nebro A, Mas AJ, Pérez-García C, Vivar MLG, Sánchez-Fernández S, Alperi-López M, Sanmartí R, Ortiz AM, Fernandez-Cid CM, Díaz-Torné C, Moreno E, Li T, Martínez-Mateu SH, Absher DM, Myers RM, Molina JT, Marsal S. Longitudinal analysis of blood DNA methylation identifies mechanisms of response to tumor necrosis factor inhibitor therapy in rheumatoid arthritis. EBioMedicine 2022; 80:104053. [PMID: 35576644 PMCID: PMC9118662 DOI: 10.1016/j.ebiom.2022.104053] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 04/25/2022] [Accepted: 04/25/2022] [Indexed: 11/07/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a chronic, immune-mediated inflammatory disease of the joints that has been associated with variation in the peripheral blood methylome. In this study, we aim to identify epigenetic variation that is associated with the response to tumor necrosis factor inhibitor (TNFi) therapy. Methods Peripheral blood genome-wide DNA methylation profiles were analyzed in a discovery cohort of 62 RA patients at baseline and at week 12 of TNFi therapy. DNA methylation of individual CpG sites and enrichment of biological pathways were evaluated for their association with drug response. Using a novel cell deconvolution approach, altered DNA methylation associated with TNFi response was also tested in the six main immune cell types in blood. Validation of the results was performed in an independent longitudinal cohort of 60 RA patients. Findings Treatment with TNFi was associated with significant longitudinal peripheral blood methylation changes in biological pathways related to RA (FDR<0.05). 139 biological functions were modified by therapy, with methylation levels changing systematically towards a signature similar to that of healthy controls. Differences in the methylation profile of T cell activation and differentiation, GTPase-mediated signaling, and actin filament organization pathways were associated with the clinical response to therapy. Cell type deconvolution analysis identified CpG sites in CD4+T, NK, neutrophils and monocytes that were significantly associated with the response to TNFi. Interpretation Our results show that treatment with TNFi restores homeostatic blood methylation in RA. The clinical response to TNFi is associated to methylation variation in specific biological pathways, and it involves cells from both the innate and adaptive immune systems. Funding The Instituto de Salud Carlos III.
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Affiliation(s)
- Antonio Julià
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain.
| | - Antonio Gómez
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain
| | - María López-Lasanta
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain
| | - Francisco Blanco
- Rheumatology Department, INIBIC-Hospital Universitario A Coruña, A Coruña, Spain
| | - Alba Erra
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain; Rheumatology Department, Hospital de San Rafael, Barcelona, Spain
| | | | - Antonio Juan Mas
- Rheumatology Department, Hospital Universitario Son Llàtzer, Mallorca, Spain
| | | | | | | | | | - Raimon Sanmartí
- Rheumatology Department, Fundació Clínic Recerca Biomèdica, Barcelona, Spain
| | - Ana María Ortiz
- Rheumatology Department, Hospital Universitario La Princesa, Madrid, Spain
| | | | - César Díaz-Torné
- Rheumatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Estefania Moreno
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain; Rheumatology Unit, Consorci Sanitari de l'Alt Penedès, Spain
| | - Tianlu Li
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain
| | - Sergio H Martínez-Mateu
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain
| | - Devin M Absher
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, USA
| | - Richard M Myers
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, USA
| | | | - Sara Marsal
- Rheumatology Research Group, Vall d'Hebron University Hospital Research Institute, Barcelona 08035, Spain.
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16
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de la Calle-Fabregat C, Rodríguez-Ubreva J, Ciudad L, Ramírez J, Celis R, Azuaga AB, Cuervo A, Graell E, Pérez-García C, Díaz-Torné C, Salvador G, Gómez-Puerta JA, Haro I, Sanmartí R, Cañete JD, Ballestar E. The synovial and blood monocyte DNA methylomes mirror prognosis, evolution and treatment in early arthritis. JCI Insight 2022; 7:158783. [PMID: 35324478 PMCID: PMC9090240 DOI: 10.1172/jci.insight.158783] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/23/2022] [Indexed: 11/17/2022] Open
Abstract
Identifying predictive biomarkers at early stages of inflammatory arthritis is crucial for starting appropriate therapies to avoid poor outcomes. Monocytes (MOs) and macrophages, largely associated with arthritis, are contributors and sensors of inflammation through epigenetic modifications. In this study, we investigated associations between clinical features and DNA methylation in blood and synovial fluid (SF) MOs in a prospective cohort of patients with early inflammatory arthritis. DNA methylation profiles of undifferentiated arthritis (UA) blood MOs exhibited marked alterations in comparison with those from healthy donors. We identified additional differences both in blood and SF MOs after comparing patients with UA grouped by their future outcomes, i.e., good versus poor. Patient profiles in subsequent visits revealed a reversion toward a healthy level in both groups, those requiring disease-modifying antirheumatic drugs and those who remitted spontaneously. Changes in disease activity between visits also affected DNA methylation, which was partially concomitant in the SF of UA and in blood MOs of patients with rheumatoid arthritis. Epigenetic similarities between arthritis types allow a common prediction of disease activity. Our results constitute a resource of DNA methylation–based biomarkers of poor prognosis, disease activity, and treatment efficacy for the personalized clinical management of early inflammatory arthritis.
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Affiliation(s)
| | - Javier Rodríguez-Ubreva
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), Badalona, Barcelona, Spain
| | - Laura Ciudad
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), Badalona, Barcelona, Spain
| | - Julio Ramírez
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Raquel Celis
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Ana B Azuaga
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Andrea Cuervo
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Eduard Graell
- Rheumatology Department, Hospital Universitari Parc Taulí, Sabadell, Spain
| | | | - César Díaz-Torné
- Servei de Reumatologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Georgina Salvador
- Rheumatology Department, Hospital Universitari Mútua de Terrassa, Barcelona, Spain
| | | | - Isabel Haro
- Unit of Synthesis and Biomedical Applications of Peptides, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Barcelona, Spain
| | - Raimon Sanmartí
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Juan D Cañete
- Rheumatology Department, Hospital Clinic and IDIBAPS, Barcelona, Spain
| | - Esteban Ballestar
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), Badalona, Barcelona, Spain
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17
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Short communication: TNF-α and IGF-1 regulates epigenetic mechanisms of HDAC2 and HDAC10. PLoS One 2022; 17:e0263190. [PMID: 35143520 PMCID: PMC8830685 DOI: 10.1371/journal.pone.0263190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 01/13/2022] [Indexed: 11/19/2022] Open
Abstract
Vascular restenosis often presents as a consequence of injury to the vessel wall, resulting from stenting and other interventional procedures. Such injury to the arteries induces proliferation of Vascular Smooth Muscle Cells (VSMCs), resulting in cellular hyperplasia and restenosis. We and others have previously reported de-novo production of different cytokines and growth factors such as Tumor Necrosis Factor Alpha (TNF-α) and Insulin like Growth Factor 1 (IGF-1), after vascular injury. As complex as it is, the profuse proliferation of VSMCs appears to be occurring due to several induced factors which initiate molecular mechanisms and exacerbate disease conditions. In many pathological events, the deleterious effects of TNF-α and IGF-1 in initiating disease mechanisms was reported. In the present work, we explored whether TNF-α and IGF-1 can regulate epigenetic mechanisms that promote proliferation of VSMCs. We investigated the mechanistic roles of proteins which can structurally interact with DNMT1 and initiate cellular pathways that promote proliferation of VSMCs. Our findings here, identify a novel molecular mechanism that is initiated by TNF-α and IGF-1. It was previously reported that DNMT1 expression is directly induced by TNF-α and IGF-1 treatment and increased/induced expression of DNMT1 causes silencing of genes that are essential to maintaining cellular homeostasis such as the tumor suppressor genes. We have earlier reported that TNF-α and IGF-1 treatment elevates DNMT1 expression in VSMCs and causes increased VSMC proliferation. However, the molecular mechanisms involved were not fully deciphered. Interestingly, in the present study we found that TNF-α and IGF-1 treatment failed to elevate DNMT1 expression levels in absence of HDAC2 and HDAC10. Also, while HDAC2 expression was not affected by HDAC10 knockdown, HDAC2 is essentially required for HDAC10 expression. Further, in TNF-α and IGF-1 induced epigenetic signaling mechanism, the expression of two important proteins EZH2 and PCNA seem to be regulated in an HDAC2-HDAC10 dependent manner. Our results show an inter-dependence of epigenetic mediators in inducing proliferation in VSMCs. To our knowledge, this is the first report that shows HDAC2 dependent expression of HDAC10, and suggests a novel mechanistic link between DNMT1, HDAC10 and HDAC2 that regulates EZH2 and PCNA to enhance cell proliferation of VSMCs which is the underlying cause for neointimal hyperplasia and restenosis.
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18
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Cherqaoui B, Araujo LM, Glatigny S, Breban M. Axial spondyloarthritis: emerging drug targets. Expert Opin Ther Targets 2021; 25:633-644. [PMID: 34431431 DOI: 10.1080/14728222.2021.1973429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Axial spondyloarthritis (AxSpA) is an inflammatory disorder that affects the joints, entheses, and bone tissues and is sometimes associated with psoriasis, anterior uveitis, and gut inflammation. Its pathogenesis is not wholly understood and treatment strategies require optimization. Data concerning AxSpA pathogenesis support a critical role of abnormal CD4+ T cell differentiation and exacerbated type 3 immune response. This knowledge boosted the development of interleukin (IL)-17 and Janus kinase inhibitors for AxSpA treatment beyond tumor necrosis factor-α inhibition. AREAS COVERED Emerging drug targets in animal and cellular models and with phase-II clinical trials have been evaluated. We also reflect on key issues for preclinical and clinical research going forward. EXPERT OPINION Some of the most promising approaches include: (i) modulation of transforming growth factor-β family that could exert a specific role on bone formation; (ii) blockade of granulocyte-macrophage colony-stimulating factor that could reduce type 3 immune responses, and (iii) rebalancing of biased immune response by cytokines such as IL-2 or IL-27 that could favor anti-inflammatory response and sustained drug-free remission. Multiomics tools and artificial intelligence could contribute to identification of optimal targets and help stratify patients for the most appropriate treatment options.
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Affiliation(s)
- Bilade Cherqaoui
- Infection & Inflammation, Umr 1173, Inserm, UVSQ/Université Paris Saclay - 2, Avenue De La Source De La Bièvre, Montigny-le-Bretonneux, France.,Inflamex - Laboratory of Excellence, University of Paris, France
| | - Luiza M Araujo
- Infection & Inflammation, Umr 1173, Inserm, UVSQ/Université Paris Saclay - 2, Avenue De La Source De La Bièvre, Montigny-le-Bretonneux, France.,Inflamex - Laboratory of Excellence, University of Paris, France
| | - Simon Glatigny
- Infection & Inflammation, Umr 1173, Inserm, UVSQ/Université Paris Saclay - 2, Avenue De La Source De La Bièvre, Montigny-le-Bretonneux, France.,Inflamex - Laboratory of Excellence, University of Paris, France
| | - Maxime Breban
- Infection & Inflammation, Umr 1173, Inserm, UVSQ/Université Paris Saclay - 2, Avenue De La Source De La Bièvre, Montigny-le-Bretonneux, France.,Inflamex - Laboratory of Excellence, University of Paris, France.,Department of Rheumatology, Ambroise Paré Hospital, Ap-hp - 9, Avenue Charles De Gaulle, Boulogne, France
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19
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Trager MH, Sah B, Chen Z, Liu L. Control of Breast Cancer Pathogenesis by Histone Methylation and the Hairless Histone Demethylase. Endocrinology 2021; 162:6259332. [PMID: 33928351 PMCID: PMC8237996 DOI: 10.1210/endocr/bqab088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Indexed: 12/19/2022]
Abstract
Breast cancer is a highly heterogeneous disease, encompassing many subtypes that have distinct origins, behaviors, and prognoses. Although traditionally seen as a genetic disease, breast cancer is now also known to involve epigenetic abnormalities. Epigenetic regulators, such as DNA methyltransferases and histone-modifying enzymes, play essential roles in gene regulation and cancer development. Dysregulation of epigenetic regulator activity has been causally linked with breast cancer pathogenesis. Hairless (HR) encodes a 130-kDa transcription factor that is essential for development and tissue homeostasis. Its role in transcription regulation is partly mediated by its interaction with multiple nuclear receptors, including thyroid hormone receptor, retinoic acid receptor-related orphan receptors, and vitamin D receptor. HR has been studied primarily in epidermal development and homeostasis. Hr-mutant mice are highly susceptible to ultraviolet- or carcinogen-induced skin tumors. Besides its putative tumor suppressor function in skin, loss of HR function has also been implicated in increased leukemia susceptibility and promotes the growth of melanoma and brain cancer cells. HR has also been demonstrated to function as a histone H3 lysine 9 demethylase. Recent genomics studies have identified HR mutations in a variety of human cancers, including breast cancer. The anticancer function and mechanism of action by HR in mammary tissue remains to be investigated. Here, we review the emerging role of HR, its histone demethylase activity and histone methylation in breast cancer development, and potential for epigenetic therapy.
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Affiliation(s)
- Megan H Trager
- Columbia University Vagelos College of Physicians and Surgeons, New York, New York 10032, USA
| | - Bindeshwar Sah
- The Hormel Institute, University of Minnesota, Austin, Minnesota 55912, USA
| | - Zhongming Chen
- The Hormel Institute, University of Minnesota, Austin, Minnesota 55912, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55912, USA
| | - Liang Liu
- The Hormel Institute, University of Minnesota, Austin, Minnesota 55912, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota 55912, USA
- Correspondence: Liang Liu, PhD, The Hormel Institute, University of Minnesota, Austin, MN, 55912, USA.
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20
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Tokuyama M, Gunn BM, Venkataraman A, Kong Y, Kang I, Rakib T, Townsend MJ, Costenbader KH, Alter G, Iwasaki A. Antibodies against human endogenous retrovirus K102 envelope activate neutrophils in systemic lupus erythematosus. J Exp Med 2021; 218:212176. [PMID: 34019642 PMCID: PMC8144942 DOI: 10.1084/jem.20191766] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/08/2021] [Accepted: 04/23/2021] [Indexed: 01/03/2023] Open
Abstract
Neutrophil activation and the formation of neutrophil extracellular traps (NETs) are hallmarks of innate immune activation in systemic lupus erythematosus (SLE). Here we report that the expression of an endogenous retrovirus (ERV) locus ERV-K102, encoding an envelope protein, was significantly elevated in SLE patient blood and correlated with autoantibody levels and higher interferon status. Induction of ERV-K102 in SLE negatively correlated with the expression of epigenetic silencing factors. Anti-ERV-K102 IgG levels in SLE plasma correlated with higher interferon stimulated gene expression, and further promoted enhanced neutrophil phagocytosis of ERV-K102 envelope protein through immune complex formation. Finally, phagocytosis of ERV-K102 immune complexes resulted in the formation of NETs consisting of DNA, neutrophil elastase, and citrullinated histone H3. Together, we identified an immunostimulatory ERV-K envelope protein that in an immune complex with SLE IgG is capable of activating neutrophils.
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Affiliation(s)
- Maria Tokuyama
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Bronwyn M Gunn
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA
| | - Arvind Venkataraman
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Yong Kong
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Insoo Kang
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - Tasfia Rakib
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | | | | | - Galit Alter
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA
| | - Akiko Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT.,Howard Hughes Medical Institute, Chevy Chase, MD
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Berdasco M, Esteller M. Towards a druggable epitranscriptome: Compounds that target RNA modifications in cancer. Br J Pharmacol 2021; 179:2868-2889. [PMID: 34185879 DOI: 10.1111/bph.15604] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/27/2021] [Accepted: 06/10/2021] [Indexed: 10/21/2022] Open
Abstract
Epitranscriptomics is an exciting emerging area that studies biochemical modifications of RNA. The field has been opened up by the technical efforts of the last decade to characterize and quantify RNA modifications, and this has led to a map of post-transcriptional RNA marks in normal cell fate and development. However, the scientific interest has been fuelled by the discovery of aberrant epitranscriptomes associated with human diseases, mainly cancer. The challenge is now to see whether epitrancriptomics offers mechanisms that can be effectively targeted by low MW compounds and are thus druggable. In this review, we will describe the principal RNA modifications (with a focus on mRNA), summarize the latest scientific evidence of their dysregulation in cancer and provide an overview of the state-of-the-art drug discovery to target the epitranscriptome. Finally, we will discuss the principal challenges in the field of chemical biology and drug development to increase the potential of targeted-RNA for clinical benefit.
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Affiliation(s)
- María Berdasco
- Epigenetic Therapies Group, Experimental and Clinical Hematology Program (PHEC), Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Manel Esteller
- Cancer Epigenetics Group, Cancer and Leukemia Epigenetics and Biology Program (PEBCL), Josep Carreras Leukaemia Research Institute (IJC), Barcelona, Spain.,Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain.,Physiological Sciences Department, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
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22
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Imgenberg-Kreuz J, Rasmussen A, Sivils K, Nordmark G. Genetics and epigenetics in primary Sjögren's syndrome. Rheumatology (Oxford) 2021; 60:2085-2098. [PMID: 30770922 PMCID: PMC8121440 DOI: 10.1093/rheumatology/key330] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/16/2018] [Indexed: 02/07/2023] Open
Abstract
Primary Sjögren’s syndrome (pSS) is considered to be a multifactorial disease, where underlying genetic predisposition, epigenetic mechanisms and environmental factors contribute to disease development. In the last 5 years, the first genome-wide association studies in pSS have been completed. The strongest signal of association lies within the HLA genes, whereas the non-HLA genes IRF5 and STAT4 show consistent associations in multiple ethnicities but with a smaller effect size. The majority of the genetic risk variants are found at intergenic regions and their functional impact has in most cases not been elucidated. Epigenetic mechanisms such as DNA methylation, histone modifications and non-coding RNAs play a role in the pathogenesis of pSS by their modulating effects on gene expression and may constitute a dynamic link between the genome and phenotypic manifestations. This article reviews the hitherto published genetic studies and our current understanding of epigenetic mechanisms in pSS.
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Affiliation(s)
- Juliana Imgenberg-Kreuz
- Department of Medical Sciences, Rheumatology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden2Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Astrid Rasmussen
- Department of Medical Sciences, Rheumatology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden2Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Kathy Sivils
- Department of Medical Sciences, Rheumatology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden2Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Gunnel Nordmark
- Department of Medical Sciences, Rheumatology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden2Arthritis and Clinical Immunology Research Program, Division of Genomics and Data Sciences, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
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23
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Suares A, Medina MV, Coso O. Autophagy in Viral Development and Progression of Cancer. Front Oncol 2021; 11:603224. [PMID: 33763351 PMCID: PMC7982729 DOI: 10.3389/fonc.2021.603224] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
Autophagy is a complex degradative process by which eukaryotic cells capture cytoplasmic components for subsequent degradation through lysosomal hydrolases. Although this catabolic process can be triggered by a great variety of stimuli, action in cells varies according to cellular context. Autophagy has been previously linked to disease development modulation, including cancer. Autophagy helps suppress cancer cell advancement in tumor transformation early stages, while promoting proliferation and metastasis in advanced settings. Oncoviruses are a particular type of virus that directly contribute to cell transformation and tumor development. Extensive molecular studies have revealed complex ways in which autophagy can suppress or improve oncovirus fitness while still regulating viral replication and determining host cell fate. This review includes recent advances in autophagic cellular function and emphasizes its antagonistic role in cancer cells.
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Affiliation(s)
- Alejandra Suares
- Departamento de Fisiología y Biología Molecular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María Victoria Medina
- Departamento de Fisiología y Biología Molecular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Omar Coso
- Departamento de Fisiología y Biología Molecular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
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24
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Suares A, Medina MV, Coso O. Autophagy in Viral Development and Progression of Cancer. Front Oncol 2021. [DOI: 10.3389/fonc.2021.603224
expr 816899697 + 824303767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Autophagy is a complex degradative process by which eukaryotic cells capture cytoplasmic components for subsequent degradation through lysosomal hydrolases. Although this catabolic process can be triggered by a great variety of stimuli, action in cells varies according to cellular context. Autophagy has been previously linked to disease development modulation, including cancer. Autophagy helps suppress cancer cell advancement in tumor transformation early stages, while promoting proliferation and metastasis in advanced settings. Oncoviruses are a particular type of virus that directly contribute to cell transformation and tumor development. Extensive molecular studies have revealed complex ways in which autophagy can suppress or improve oncovirus fitness while still regulating viral replication and determining host cell fate. This review includes recent advances in autophagic cellular function and emphasizes its antagonistic role in cancer cells.
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25
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Camacho-Ordonez N, Ballestar E, Timmers HTM, Grimbacher B. What can clinical immunology learn from inborn errors of epigenetic regulators? J Allergy Clin Immunol 2021; 147:1602-1618. [PMID: 33609625 DOI: 10.1016/j.jaci.2021.01.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 12/20/2022]
Abstract
The epigenome is at the interface between environmental factors and the genome, regulating gene transcription, DNA repair, and replication. Epigenetic modifications play a crucial role in establishing and maintaining cell identity and are especially crucial for neurology, musculoskeletal integrity, and the function of the immune system. Mutations in genes encoding for the components of the epigenetic machinery lead to the development of distinct disorders, especially involving the central nervous system and host defense. In this review, we focus on the role of epigenetic modifications for the function of the immune system. By studying the immune phenotype of patients with monogenic mutations in components of the epigenetic machinery (inborn errors of epigenetic regulators), we demonstrate the importance of DNA methylation, histone modifications, chromatin remodeling, noncoding RNAs, and mRNA processing for immunity. Moreover, we give a short overview on therapeutic strategies targeting the epigenome.
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Affiliation(s)
- Nadezhda Camacho-Ordonez
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany; Faculty of Biology, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
| | - Esteban Ballestar
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), Badalona, Barcelona, Spain
| | - H Th Marc Timmers
- German Cancer Consortium (DKTK), partner site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Urology, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany; DZIF - German Center for Infection Research, Satellite Center Freiburg, Freiburg, Germany; CIBSS - Centre for Integrative Biological Signalling Studies, Albert-Ludwigs University, Freiburg, Germany; RESIST- Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Freiburg, Germany.
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26
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Ni DX, Wang Q, Li YM, Cui YM, Shen TZ, Li XL, Sun HD, Zhang XJ, Zhang R, Xiao WL. Synthesis of nigranoic acid and manwuweizic acid derivatives as HDAC inhibitors and anti-inflammatory agents. Bioorg Chem 2021; 109:104728. [PMID: 33636436 DOI: 10.1016/j.bioorg.2021.104728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 01/07/2023]
Abstract
As a successful anti-tumor drug target, the family of histone deacetylases (HDACs) is also a critical player in immune response, making the research of anti-inflammatory HDAC inhibitors an attractive new focus. In this report, triterpenoids nigranoic acid (NA) and manwuweizic acid (MA) were identified as HDAC inhibitors through docking-based virtual screening and enzymatic activity assay. A series of derivatives of NA and MA were synthesized and assessed for their biological effects. As a result, hydroxamic acid derivatives of NA and MA showed moderately increased activity for HDAC1/2/4/6 inhibition (the lowest IC50 against HDAC1 is 1.14 μM), with no activity against HDAC8. In J774A.1 macrophage, compound 1-3, 13 and 17-19 demonstrated inhibitory activity against lactate dehydrogenase (LDH) and IL-1β production, without affecting cell viability. Compound 19 increased the histone acetylation level in J774A.1 cells, as well as inhibited IL-1β maturation and caspase-1 cleavage. These results indicated that compound 19 blocks the activation of NLRP3 inflammasome, probably related to HDAC inhibition. This work provided a natural scaffold for developing low-cytotoxic and anti-inflammatory HDAC inhibitors, as well as a class of tool molecules for studying the relationship between HDACs and NLRP3 activation.
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Affiliation(s)
- Dong-Xuan Ni
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Qi Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Yi-Ming Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Yi-Man Cui
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Tian-Ze Shen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Xiao-Li Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Xing-Jie Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
| | - Ruihan Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
| | - Wei-Lie Xiao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
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27
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Cherqaoui B, Crémazy F, Hue C, Garchon HJ, Breban M, Costantino F. Epigenetics of spondyloarthritis. Joint Bone Spine 2020; 87:565-571. [DOI: 10.1016/j.jbspin.2020.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/03/2020] [Indexed: 12/17/2022]
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28
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Differential CpG DNA methylation in peripheral naïve CD4 + T-cells in early rheumatoid arthritis patients. Clin Epigenetics 2020; 12:54. [PMID: 32264938 PMCID: PMC7137446 DOI: 10.1186/s13148-020-00837-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/08/2020] [Indexed: 12/15/2022] Open
Abstract
Background The genetic risk associated with rheumatoid arthritis (RA) includes genes regulating DNA methylation, one of the hallmarks of epigenetic re-programing, as well as many T-cell genes, with a strong MHC association, pointing to immunogenetic mechanisms as disease triggers leading to chronicity. The aim of our study was to explore DNA methylation in early, drug-naïve RA patients, towards a better understanding of early events in pathogenesis. Result Monocytes, naïve and memory CD4+ T-cells were sorted from 6 healthy controls and 10 RA patients. DNA methylation was assessed using a genome-wide Illumina 450K CpG promoter array. Differential methylation was confirmed using bisulfite sequencing for a specific gene promoter, ELISA for several cytokines and flow cytometry for cell surface markers. Differentially methylated (DM) CpGs were observed in 1047 genes in naïve CD4+ T-cells, 913 in memory cells and was minimal in monocytes with only 177 genes. Naive CD4+ T-cells were further investigated as presenting differential methylation in the promoter of > 500 genes associated with several disease-relevant pathways, including many cytokines and their receptors. We confirmed hypomethylation of a region of the TNF-alpha gene in early RA and differential expression of 3 cytokines (IL21, IL34 and RANKL). Using a bioinformatics package (DMRcate) and an in-house analysis based on differences in β values, we established lists of DM genes between health and RA. Publicly available gene expression data were interrogated to confirm differential expression of over 70 DM genes. The lists of DM genes were further investigated based on a functional relationship database analysis, which pointed to an IL6/JAK1/STAT3 node, related to TNF-signalling and engagement in Th17 cell differentiation amongst many pathways. Five DM genes for cell surface markers (CD4, IL6R, IL2RA/CD25, CD62L, CXCR4) were investigated towards identifying subpopulations of CD4+ T-cells undergoing these modifications and pointed to a subset of naïve T-cells, with high levels of CD4, IL2R, and CXCR4, but reduction and loss of IL6R and CD62L, respectively. Conclusion Our data provided novel conceptual advances in the understanding of early RA pathogenesis, with implications for early treatment and prevention.
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29
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Ramos PS. Epigenetics of scleroderma: Integrating genetic, ethnic, age, and environmental effects. JOURNAL OF SCLERODERMA AND RELATED DISORDERS 2019; 4:238-250. [PMID: 35382507 PMCID: PMC8922566 DOI: 10.1177/2397198319855872] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/15/2019] [Indexed: 08/02/2023]
Abstract
Scleroderma or systemic sclerosis is thought to result from the interplay between environmental or non-genetic factors in a genetically susceptible individual. Epigenetic modifications are influenced by genetic variation and environmental exposures, and change with chronological age and between populations. Despite progress in identifying genetic, epigenetic, and environmental risk factors, the underlying mechanism of systemic sclerosis remains unclear. Since epigenetics provides the regulatory mechanism linking genetic and non-genetic factors to gene expression, understanding the role of epigenetic regulation in systemic sclerosis will elucidate how these factors interact to cause systemic sclerosis. Among the cell types under tight epigenetic control and susceptible to epigenetic dysregulation, immune cells are critically involved in early pathogenic events in the progression of fibrosis and systemic sclerosis. This review starts by summarizing the changes in DNA methylation, histone modification, and non-coding RNAs associated with systemic sclerosis. It then discusses the role of genetic, ethnic, age, and environmental effects on epigenetic regulation, with a focus on immune system dysregulation. Given the potential of epigenome editing technologies for cell reprogramming and as a therapeutic approach for durable gene regulation, this review concludes with a prospect on epigenetic editing. Although epigenomics in systemic sclerosis is in its infancy, future studies will help elucidate the regulatory mechanisms underpinning systemic sclerosis and inform the design of targeted epigenetic therapies to control its dysregulation.
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Affiliation(s)
- Paula S Ramos
- Paula S. Ramos, Division of Rheumatology and Immunology, Department of Medicine and Department of Public Health Sciences, Medical University of South Carolina, 96 Jonathan Lucas Street, Suite 816, MSC 637, Charleston, SC 29425, USA.
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30
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Sawalha AH. BCL-6 and EZH2 cooperate to epigenetically repress anti-inflammatory miR-142-3p/5p in lupus CD4+T cells. Cell Mol Immunol 2019; 18:504-505. [PMID: 31511638 DOI: 10.1038/s41423-019-0288-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 08/20/2019] [Indexed: 11/09/2022] Open
Affiliation(s)
- Amr H Sawalha
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA. .,Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA. .,Lupus Center of Excellence, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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31
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Abstract
Knowledge of how the joint functions as an integrated unit in health and disease requires an understanding of the stromal cells populating the joint mesenchyme, including fibroblasts, tissue-resident macrophages and endothelial cells. Knowledge of the physiological and pathological mechanisms that involve joint mesenchymal stromal cells has begun to cast new light on why joint inflammation persists. The shared embryological origins of fibroblasts and endothelial cells might shape the behaviour of these cell types in diseased adult tissues. Cells of mesenchymal origin sustain inflammation in the synovial membrane and tendons by various mechanisms, and the important contribution of newly discovered fibroblast subtypes and their associated crosstalk with endothelial cells, tissue-resident macrophages and leukocytes is beginning to emerge. Knowledge of these mechanisms should help to shape the future therapeutic landscape and emphasizes the requirement for new strategies to address the pathogenic stroma and associated crosstalk between leukocytes and cells of mesenchymal origin.
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32
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Carnero-Montoro E, Barturen G, Povedano E, Kerick M, Martinez-Bueno M, Ballestar E, Martin J, Teruel M, Alarcón-Riquelme ME. Epigenome-Wide Comparative Study Reveals Key Differences Between Mixed Connective Tissue Disease and Related Systemic Autoimmune Diseases. Front Immunol 2019; 10:1880. [PMID: 31440254 PMCID: PMC6693476 DOI: 10.3389/fimmu.2019.01880] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/24/2019] [Indexed: 11/26/2022] Open
Abstract
Mixed Connective Tissue Disease (MCTD) is a rare complex systemic autoimmune disease (SAD) characterized by the presence of increased levels of anti-U1 ribonucleoprotein autoantibodies and signs and symptoms that resemble other SADs such as systemic sclerosis (SSc), rheumatoid arthritis (RA), and systemic lupus erythematosus (SLE). Due to its low prevalence, this disease has been very poorly studied at the molecular level. We performed for the first time an epigenome-wide association study interrogating DNA methylation data obtained with the Infinium MethylationEPIC array from whole blood samples in 31 patients diagnosed with MCTD and 255 healthy subjects. We observed a pervasive hypomethylation involving 170 genes enriched for immune-related function such as those involved in type I interferon signaling pathways or in negative regulation of viral genome replication. We mostly identified epigenetic signals at genes previously implicated in other SADs, for example MX1, PARP9, DDX60, or IFI44L, for which we also observed that MCTD patients exhibit higher DNA methylation variability compared with controls, suggesting that these sites might be involved in plastic immune responses that are relevant to the disease. Through methylation quantitative trait locus (meQTL) analysis we identified widespread local genetic effects influencing DNA methylation variability at MCTD-associated sites. Interestingly, for IRF7, IFI44 genes, and the HLA region we have evidence that they could be exerting a genetic risk on MCTD mediated through DNA methylation changes. Comparison of MCTD-associated epigenome with patients diagnosed with SLE, or Sjögren's Syndrome, reveals a common interferon-related epigenetic signature, however we find substantial epigenetic differences when compared with patients diagnosed with rheumatoid arthritis and systemic sclerosis. Furthermore, we show that MCTD-associated CpGs are potential epigenetic biomarkers with high diagnostic value. Our study serves to reveal new genes and pathways involved in MCTD, to illustrate the important role of epigenetic modifications in MCTD pathology, in mediating the interaction between different genetic and environmental MCTD risk factors, and as potential biomarkers of SADs.
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Affiliation(s)
- Elena Carnero-Montoro
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain
| | - Guillermo Barturen
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain
| | - Elena Povedano
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain
| | - Martin Kerick
- CSIC-IBPLN, Consejo Superior de Investigaciones Científicas, Instituto de Parasitología y Biomedicina López-Neyra, Granada, Spain
| | - Manuel Martinez-Bueno
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain
| | | | - Esteban Ballestar
- IDIBELL, Bellvitge Biomedical Research Institute L'Hospitalet de Llobregat, Barcelona, Spain
| | - Javier Martin
- CSIC-IBPLN, Consejo Superior de Investigaciones Científicas, Instituto de Parasitología y Biomedicina López-Neyra, Granada, Spain
| | - María Teruel
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain
| | - Marta E Alarcón-Riquelme
- GENYO, Center for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Granada, Spain.,Institute for Environmental Medicine, Karolinska Institutet, Solna, Sweden
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33
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Abstract
Biomarker discovery and validation are necessary for improving the prediction of clinical outcomes and patient monitoring. Despite considerable interest in biomarker discovery and development, improvements in the range and quality of biomarkers are still needed. The main challenge is how to integrate preclinical data to obtain a reliable biomarker that can be measured with acceptable costs in routine clinical practice. Epigenetic alterations are already being incorporated as valuable candidates in the biomarker field. Furthermore, their reversible nature offers a promising opportunity to ameliorate disease symptoms by using epigenetic-based therapy. Thus, beyond helping to understand disease biology, clinical epigenetics is being incorporated into patient management in oncology, as well as being explored for clinical applicability for other human pathologies such as neurological and infectious diseases and immune system disorders.
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34
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Donlin LT, Park SH, Giannopoulou E, Ivovic A, Park-Min KH, Siegel RM, Ivashkiv LB. Insights into rheumatic diseases from next-generation sequencing. Nat Rev Rheumatol 2019; 15:327-339. [PMID: 31000790 PMCID: PMC6673602 DOI: 10.1038/s41584-019-0217-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rheumatic diseases have complex aetiologies that are not fully understood, which makes the study of pathogenic mechanisms in these diseases a challenge for researchers. Next-generation sequencing (NGS) and related omics technologies, such as transcriptomics, epigenomics and genomics, provide an unprecedented genome-wide view of gene expression, environmentally responsive epigenetic changes and genetic variation. The integrated application of NGS technologies to samples from carefully phenotyped clinical cohorts of patients has the potential to solve remaining mysteries in the pathogenesis of several rheumatic diseases, to identify new therapeutic targets and to underpin a precision medicine approach to the diagnosis and treatment of rheumatic diseases. This Review provides an overview of the NGS technologies available, showcases important advances in rheumatic disease research already powered by these technologies and highlights NGS approaches that hold particular promise for generating new insights and advancing the field.
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Affiliation(s)
- Laura T Donlin
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA
- David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Sung-Ho Park
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA
- David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
| | - Eugenia Giannopoulou
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA
- David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Biological Sciences Department, New York City College of Technology, City University of New York, New York, NY, USA
| | - Aleksandra Ivovic
- Immunoregulation Section, Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kyung-Hyun Park-Min
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA
- David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Richard M Siegel
- Immunoregulation Section, Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lionel B Ivashkiv
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA.
- David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
- Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, New York, NY, USA.
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35
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Jung N, Bueb JL, Tolle F, Bréchard S. Regulation of neutrophil pro-inflammatory functions sheds new light on the pathogenesis of rheumatoid arthritis. Biochem Pharmacol 2019; 165:170-180. [PMID: 30862503 DOI: 10.1016/j.bcp.2019.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/07/2019] [Indexed: 02/08/2023]
Abstract
For more than two centuries now, rheumatoid arthritis (RA) is under investigation intending to discover successful treatment. Despite decades of scientific advances, RA is still representing a challenge for contemporary medicine. Current drug therapies allow to improve significantly the quality of life of RA patients; however, they are still insufficient to reverse tissue injury and are often generating side-effects. The difficulty arises from the considerable fluctuation of the clinical course of RA among patients, making the predictive prognosis difficult. More and more studies underline the profound influence of the neutrophil multifaceted functions in the pathogenesis of RA. This renewed interest in the complexity of neutrophil functions in RA offers new exciting opportunities for valuable therapeutic targets as well as for safe and well-tolerated RA treatments. In this review, we aim to update the recent findings on the multiple facets of neutrophils in RA, in particular their impact in promoting the RA-based inflammation through the release of the cytokine-like S100A8/A9 protein complex, as well as the importance of NETosis in the disease progression and development. Furthermore, we delve into the complex question of neutrophil heterogeneity and plasticity and discuss the emerging role of miRNAs and epigenetic markers influencing the inflammatory response of neutrophils in RA and how they could constitute the starting point for novel attractive targets in RA therapy.
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Affiliation(s)
- N Jung
- Life Sciences Research Unit, Immune Cells and Inflammatory Diseases group, University of Luxembourg, 6 Avenue du Swing, L-4367 Belvaux, Luxembourg
| | - J-L Bueb
- Life Sciences Research Unit, Immune Cells and Inflammatory Diseases group, University of Luxembourg, 6 Avenue du Swing, L-4367 Belvaux, Luxembourg
| | - F Tolle
- Life Sciences Research Unit, Immune Cells and Inflammatory Diseases group, University of Luxembourg, 6 Avenue du Swing, L-4367 Belvaux, Luxembourg
| | - S Bréchard
- Life Sciences Research Unit, Immune Cells and Inflammatory Diseases group, University of Luxembourg, 6 Avenue du Swing, L-4367 Belvaux, Luxembourg.
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36
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Zamanpoor M. The genetic pathogenesis, diagnosis and therapeutic insight of rheumatoid arthritis. Clin Genet 2019; 95:547-557. [PMID: 30578544 DOI: 10.1111/cge.13498] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/16/2022]
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease that causes chronic inflammation of the joints. RA is a heterogeneous disorder caused by an abnormal autoimmune response triggered by the complex interactions of genetic and environmental factors that contribute to RA etiology. However, its underlying pathogenic mechanisms are yet to be fully understood. In this review, I provide an overview of the pathogenesis, diagnosis and therapeutic insight in the clinical management of RA in light of the recent updates to classification criteria and recent discoveries of genetic loci associated with susceptibility for RA.
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Affiliation(s)
- Mansour Zamanpoor
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Wellington Regional Genetics Laboratory, Genetic Health Service New Zealand, Wellington Regional Hospital, Wellington, New Zealand
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37
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Distler JHW. [New molecular mechanisms in the pathophysiology of rheumatic diseases]. Z Rheumatol 2018; 77:766-768. [PMID: 30382399 DOI: 10.1007/s00393-018-0543-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J H W Distler
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) und Universitätsklinik Erlangen, Ulmenweg 18, 91054, Erlangen, Deutschland.
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38
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Ma K, Li J, Wang X, Lin X, Du W, Yang X, Mou F, Fang Y, Zhao Y, Hong X, Chan KW, Zhang X, Liu D, Sun L, Lu L. TLR4+CXCR4+ plasma cells drive nephritis development in systemic lupus erythematosus. Ann Rheum Dis 2018; 77:1498-1506. [DOI: 10.1136/annrheumdis-2018-213615] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/01/2018] [Accepted: 06/08/2018] [Indexed: 01/24/2023]
Abstract
ObjectivesIn patients with systemic lupus erythematosus (SLE), immune tolerance breakdown leads to autoantibody production and immune-complex glomerulonephritis. This study aimed to identify pathogenic plasma cells (PC) in the development of lupus nephritis.MethodsPC subsets in peripheral blood and renal tissue of patients with SLE and lupus mice were examined by flow cytometry and confocal microscopy, respectively. Sorting-purified PCs from lupus mice were adoptively transferred into Rag2-deficient recipients, in which immune-complex deposition and renal pathology were investigated. In culture, PCs from lupus mice and patients with SLE were treated with a TLR4 inhibitor and examined for autoantibody secretion by enzyme-linked immunospot assay (ELISPOT). Moreover, lupus mice were treated with a TLR4 inhibitor, followed by the assessment of serum autoantibody levels and glomerulonephritis activity.ResultsThe frequencies of TLR4+CXCR4+ PCs in peripheral blood and renal tissue were found significantly increased with the potent production of anti-dsDNA IgG, which were associated with severe renal damages in patients with SLE and mice with experimental lupus. Adoptive transfer of TLR4+CXCR4+ PCs from lupus mice led to autoantibody production and glomerulonephritis development in Rag2-deficient recipients. In culture, TLR4+CXCR4+ PCs from both lupus mice and patients with SLE showed markedly reduced anti-dsDNA IgG secretion on TLR4 blockade. Moreover, in vivo treatment with TLR4 inhibitor significantly attenuated autoantibody production and renal damages in lupus mice.ConclusionsThese findings demonstrate a pathogenic role of TLR4+CXCR4+ PCs in the development of lupus nephritis and may provide new therapeutic strategies for the treatment of SLE.
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Epigenetic alterations in primary Sjögren's syndrome - an overview. Clin Immunol 2018; 196:12-20. [PMID: 29649576 DOI: 10.1016/j.clim.2018.04.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 12/14/2022]
Abstract
Primary Sjögren's syndrome (pSS) is a chronic autoimmune rheumatic disease characterized by inflammation of exocrine glands, mainly salivary and lacrimal glands. In addition, pSS may affect multiple other organs resulting in systemic manifestations. Although the precise etiology of pSS remains elusive, pSS is considered to be a multi-factorial disease, where underlying genetic predisposition, environmental factors and epigenetic mechanisms contribute to disease development. Epigenetic mechanisms, such as DNA methylation, histone modifications and non-coding RNAs, may constitute a dynamic link between genome, environment and phenotypic manifestation by their modulating effects on gene expression. A growing body of studies reporting altered epigenetic landscapes in pSS suggests that epigenetic mechanisms play a role in the pathogenesis of pSS, and the reversible nature of epigenetic modifications suggests therapeutic strategies targeting epigenetic dysregulation in pSS. This article reviews our current understanding of epigenetic mechanisms in pSS and discusses implications for novel diagnostic and therapeutic approaches.
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40
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Daskalaki MG, Tsatsanis C, Kampranis SC. Histone methylation and acetylation in macrophages as a mechanism for regulation of inflammatory responses. J Cell Physiol 2018; 233:6495-6507. [PMID: 29574768 DOI: 10.1002/jcp.26497] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/22/2018] [Indexed: 12/25/2022]
Abstract
Macrophages respond to noxious stimuli and contribute to inflammatory responses by eliminating pathogens or damaged tissue and maintaining homeostasis. Response to activation signals and maintenance of homeostasis require tight regulation of genes involved in macrophage activation and inactivation processes, as well as genes involved in determining their polarization state. Recent evidence has revealed that such regulation occurs through histone modifications that render inflammatory or polarizing gene promoters accessible to transcriptional complexes. Thus, inflammatory and anti-inflammatory genes are regulated by histone acetylation and methylation, determining their activation state. Herein, we review the current knowledge on the role of histone modifying enzymes (acetyltransferases, deacetylases, methyltransferases, and demethylases) in determining the responsiveness and M1 or M2 polarization of macrophages. The contribution of these enzymes in the development of inflammatory diseases is also presented.
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Affiliation(s)
- Maria G Daskalaki
- Laboratory of Biochemistry, Medical School, University of Crete, Heraklion, Crete, Greece.,Laboratory of Clinical Chemistry, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Christos Tsatsanis
- Laboratory of Clinical Chemistry, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Sotirios C Kampranis
- Laboratory of Biochemistry, Medical School, University of Crete, Heraklion, Crete, Greece
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