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Stemmer E, Zahavi T, Kellerman M, Sinberger LA, Shrem G, Salmon‐Divon M. Exploring potential biomarkers and therapeutic targets in inflammatory bowel disease: insights from a mega-analysis approach. Front Immunol 2024; 15:1353402. [PMID: 38510241 PMCID: PMC10951083 DOI: 10.3389/fimmu.2024.1353402] [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: 12/11/2023] [Accepted: 02/20/2024] [Indexed: 03/22/2024] Open
Abstract
Background Understanding the molecular pathogenesis of inflammatory bowel disease (IBD) has led to the discovery of new therapeutic targets that are more specific and effective. Our aim was to explore the molecular pathways and genes involved in IBD pathogenesis and to identify new therapeutic targets and novel biomarkers that can aid in the diagnosis of the disease. Methods To obtain the largest possible number of samples and analyze them comprehensively, we used a mega-analysis approach. This involved reprocessing raw data from multiple studies and analyzing them using bioinformatic and machine learning techniques. Results We analyzed a total of 697 intestinal biopsies of Ulcerative Colitis (n = 386), Crohn's disease (n = 183) and non-IBD controls (n = 128). A machine learning analysis detected 34 genes whose collective expression effectively distinguishes inflamed biopsies of IBD patients from non-IBD control samples. Most of these genes were upregulated in IBD. Notably, among these genes, three novel lncRNAs have emerged as potential contributors to IBD development: ENSG00000285744, ENSG00000287626, and MIR4435-2HG. Furthermore, by examining the expression of 29 genes, among the 34, in blood samples from IBD patients, we detected a significant upregulation of 12 genes (p-value < 0.01), underscoring their potential utility as non-invasive diagnostic biomarkers. Finally, by utilizing the CMap library, we discovered potential compounds that should be explored in future studies for their therapeutic efficacy in IBD treatment. Conclusion Our findings contribute to the understanding of IBD pathogenesis, suggest novel biomarkers for IBD diagnosis and offer new prospects for therapeutic intervention.
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Affiliation(s)
- Edia Stemmer
- Department of Molecular Biology, Ariel University, Ariel, Israel
| | - Tamar Zahavi
- Department of Molecular Biology, Ariel University, Ariel, Israel
| | - Maoz Kellerman
- Department of Molecular Biology, Ariel University, Ariel, Israel
- Kaleidoo, Bar Lev High Tech Park, Misgav, Israel
| | | | - Guy Shrem
- Obstetrics, Gynecology and Infertility (OB&GYN) Department Maccabi Healthcare Services, Tel Aviv, Israel
| | - Mali Salmon‐Divon
- Department of Molecular Biology, Ariel University, Ariel, Israel
- Adelson School of Medicine, Ariel University, Ariel, Israel
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Chen YY, Chen SY, Chang HY, Liu YC, Chuang BF, Yen GC. Phyllanthus emblica L. polysaccharides ameliorate colitis via microbiota modulation and dual inhibition of the RAGE/NF-κB and MAPKs signaling pathways in rats. Int J Biol Macromol 2024; 258:129043. [PMID: 38158054 DOI: 10.1016/j.ijbiomac.2023.129043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/10/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
Pharmacological treatments for colitis have limited efficacy and side effects. Plant polysaccharides improve colitis by modulating the gut microbiota. However, the specific benefits of Phyllanthus emblica L. polysaccharides (PEPs) in colitis remain unclear. Therefore, this study aimed to assess the physical characteristics and health advantages of PEP in rats subjected to 2,4,6-trinitrobenzene sulfonic acid (TNBS) treatment. The results showed that PEP (1.226 × 103 kDa) was an α-acidic pyran heteropolysaccharide rich in galactose and galacturonic acid. Prefeeding rats with PEP significantly decreased the levels of NO, MDA, proinflammatory cytokines (IL-6, IL-1β, TNF-α), apoptosis, and the activities of mucinase and β-glucuronidase. These changes were accompanied by increases in the levels of anti-inflammatory cytokines (IL-4, IL-10) and antioxidant enzymes (SOD, catalase, GPx) in colitis rats. Mechanistically, PEP suppressed the abundance of inflammatory-related bacteria (Bacteroides, Intestinimonas, and Parabacteroides) while promoting the growth of short-chain fatty acid (SCFA)-producing bacteria (Romboutsia, Clostridium_sensu_stricto_1, and Lactobacillus), along with an increase in SCFA secretion. SCFAs may engage with the GPR43 receptor and inhibit downstream HDAC3, consequently downregulating the activation of the RAGE/NF-κB and MAPK pathways. In conclusion, PEP demonstrated preventive effects through its antioxidant, anti-inflammatory, and microbiota modulation properties, thereby ameliorating TNBS-induced colitis in rats.
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Affiliation(s)
- Ying-Ying Chen
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Sheng-Yi Chen
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Hsin-Yu Chang
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Yu-Chen Liu
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Bing-Fan Chuang
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Gow-Chin Yen
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
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Omotesho QA, Escamilla A, Pérez-Ruiz E, Frecha CA, Rueda-Domínguez A, Barragán I. Epigenetic targets to enhance antitumor immune response through the induction of tertiary lymphoid structures. Front Immunol 2024; 15:1348156. [PMID: 38333212 PMCID: PMC10851080 DOI: 10.3389/fimmu.2024.1348156] [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: 12/01/2023] [Accepted: 01/02/2024] [Indexed: 02/10/2024] Open
Abstract
Tertiary lymphoid structures (TLS) are ectopic lymphoid aggregates found in sites of chronic inflammation such as tumors and autoimmune diseases. The discovery that TLS formation at tumor sites correlated with good patient prognosis has triggered extensive research into various techniques to induce their formation at the tumor microenvironment (TME). One strategy is the exogenous induction of specific cytokines and chemokine expression in murine models. However, applying such systemic chemokine expression can result in significant toxicity and damage to healthy tissues. Also, the TLS formed from exogenous chemokine induction is heterogeneous and different from the ones associated with favorable prognosis. Therefore, there is a need to optimize additional approaches like immune cell engineering with lentiviral transduction to improve the TLS formation in vivo. Similarly, the genetic and epigenetic regulation of the different phases of TLS neogenesis are still unknown. Understanding these molecular regulations could help identify novel targets to induce tissue-specific TLS in the TME. This review offers a unique insight into the molecular checkpoints of the different stages and mechanisms involved in TLS formation. This review also highlights potential epigenetic targets to induce TLS neogenesis. The review further explores epigenetic therapies (epi-therapy) and ongoing clinical trials using epi-therapy in cancers. In addition, it builds upon the current knowledge of tools to generate TLS and TLS phenotyping biomarkers with predictive and prognostic clinical potential.
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Affiliation(s)
- Quadri Ajibola Omotesho
- Medical Oncology Service (Group of Translational Research in Cancer Immunotherapy and Epigenetics), Regional and Clinical University Hospitals, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Malaga, Spain
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Alejandro Escamilla
- Medical Oncology Service (Group of Translational Research in Cancer Immunotherapy and Epigenetics), Regional and Clinical University Hospitals, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Malaga, Spain
- Department of Human Physiology, Human Histology, Pathological Anatomy and Physical Sport Education, University of Malaga, Malaga, Spain
| | - Elisabeth Pérez-Ruiz
- Medical Oncology Service (Group of Translational Research in Cancer Immunotherapy and Epigenetics), Regional and Clinical University Hospitals, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Malaga, Spain
| | - Cecilia A. Frecha
- Allergy Research Group, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Civil Hospital, Malaga, Spain
| | - Antonio Rueda-Domínguez
- Medical Oncology Service (Group of Translational Research in Cancer Immunotherapy and Epigenetics), Regional and Clinical University Hospitals, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Malaga, Spain
| | - Isabel Barragán
- Medical Oncology Service (Group of Translational Research in Cancer Immunotherapy and Epigenetics), Regional and Clinical University Hospitals, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Malaga, Spain
- Group of Pharmacoepigenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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Zhu H, Lu J, Fu M, Chen P, Yu Y, Chen M, Zhao Q, Wu M, Ye M. YAP represses intestinal inflammation through epigenetic silencing of JMJD3. Clin Epigenetics 2024; 16:14. [PMID: 38245781 PMCID: PMC10800074 DOI: 10.1186/s13148-024-01626-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 01/10/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Epigenetics plays an important role in the pathogenesis of inflammatory bowel disease (IBD). Some studies have reported that YAP is involved in inflammatory response and can regulate target genes through epigenetic modifications. JMJD3, a histone H3K27me3 demethylase, is associated with some inflammatory diseases. In this study, we investigated the role of YAP in the development of IBD and the underlying epigenetic mechanisms. RESULTS YAP expression was significantly increased in both in vitro and in vivo colitis models as well as in patients with IBD. Epithelial-specific knockout of YAP aggravates disease progression in dextran sodium sulfate (DSS)-induced murine colitis. In the TNF-α-activated cellular inflammation model, YAP knockdown significantly increased JMJD3 expression. Coimmunoprecipitation experiments showed that YAP and EZH2 bind to each other, and chromatin immunoprecipitation-PCR (ChIP-PCR) assay indicated that silencing of YAP or EZH2 decreases H3K27me3 enrichment on the promoter of JMJD3. Finally, administration of the JMJD3 pharmacological inhibitor GSK-J4 alleviated the progression of DSS-induced murine colitis. CONCLUSION Our findings elucidate an epigenetic mechanism by which YAP inhibits the inflammatory response in colitis through epigenetic silencing of JMJD3 by recruiting EZH2.
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Affiliation(s)
- Hua Zhu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Jiali Lu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - MingYue Fu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Ping Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Yali Yu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Min Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China
| | - Min Wu
- Frontier Science Center for Immunology and Metabolism, Hubei Key Laboratory of Cell Homeostasis, Hubei Key Laboratory of Developmentally Originated Disease, Hubei Key Laboratory of Intestinal and Colorectal Diseases, College of Life Sciences, Wuhan University, Wuhan, 430072, Hubei, China
| | - Mei Ye
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, China.
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China.
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Li T, Han B, Wang L, Sun L, Cai Y, Yu M, Xiao W, Yang H. Activation of mucosal insulin receptor exacerbates intestinal inflammation by promoting tissue resident memory T cells differentiation through EZH2. J Transl Med 2024; 22:78. [PMID: 38243324 PMCID: PMC10797971 DOI: 10.1186/s12967-023-04789-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: 08/06/2023] [Accepted: 12/09/2023] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Inflammatory Bowel Diseases (IBD), an autoimmune disease characterised by abnormal intestinal immunity, are related to vital morbidity around the world. However, therapeutic agents for IBD have not achieved desired benefit. Exploring new therapeutic targets for IBD, especially based on its abnormally intestinal immunity, could alleviate the flare-up and worsening of IBD. Tissue resident memory T cells (TRM) are core of multiple autoimmune diseases, including IBD. However, the mechanism of TRM differentiation remains to be investigated. METHODS The alterations in mRNA and lncRNA profile of intestinal intraepithelial lymphocytes (IELs), the largest component of intestinal TRM, were analyzed in DSS-induced chronic colitis. Based on it, we examined the function of rectal insulin instillation in a dextran sodium sulfate (DSS) induced chronic colitis. Furthermore, we investigated the downstream-target of the insulin pathway-EZH2 and the crucial role of EZH2 in intestinal tissue resident memory T cell differentiation by utilizing EZH2fl/flCD4cre mice. RESULTS Insulin receptor (INSR) expression was found to be significantly reduced. Activation of mucosal insulin pathway by rectal insulin instillation exacerbated colitis by disrupting IELs subgroups and up-regulating TNF-ɑ and IL-17 expression. Rectal insulin instillation promoted EZH2 expression and EZH2 inhibition alleviated chronic colitis. EZH2fl/flCD4cre mice restored the normal IEL subgroups and suppressed TNF-ɑ and IL-17 expression, exhibiting alleviated colitis. IELs from EZH2fl/flCD4cre mice exhibit significant changes in TRM related phenotype. CD4+TRM was significantly increased in chronic colitis and decreased in EZH2fl/flCD4cre mice. CONCLUSION Insulin receptor of intestinal mucosal T-cells could promote intestinal TRM differentiation via EZH2. Our discoveries suggest that therapies targeting colonic INSR and EZH2 could be potential treatment for IBD based on its regulatory effects on TRM. Insulin receptor inhibitors rather than insulin should be applied during colitis-active phase. In addition, EZH2 shows to be a downstream signal of the insulin pathway and EZH2 inhibitor could alleviating intestinal inflammation. However, the critical role of EZH2 in TRM differentiation restricts the anti-tumor effects of EZH2 inhibitor in vivo.
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Affiliation(s)
- Teming Li
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China
- Department of General Surgery, Army 953 Hospital, Shigatse Branch of Xinqiao Hospital, Army Medical University, Shigatse, 857000, China
| | - Ben Han
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China
| | - Liucan Wang
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China
| | - Lihua Sun
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China
| | - Yujiao Cai
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China
| | - Min Yu
- Department of General Surgery, Chongqing General Hospital, Chongqing, 401147, China.
| | - Weidong Xiao
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China.
| | - Hua Yang
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China.
- Department of General Surgery, Chongqing General Hospital, Chongqing, 401147, China.
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Chen J, Feng H, Wang Y, Bai X, Sheng S, Li H, Huang M, Chu X, Lei Z. The involvement of E3 ubiquitin ligases in the development and progression of colorectal cancer. Cell Death Discov 2023; 9:458. [PMID: 38104139 PMCID: PMC10725464 DOI: 10.1038/s41420-023-01760-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023] Open
Abstract
To date, colorectal cancer (CRC) still has limited therapeutic efficacy and poor prognosis and there is an urgent need for novel targets to improve the outcome of CRC patients. The highly conserved ubiquitination modification mediated by E3 ubiquitin ligases is an important mechanism to regulate the expression and function of tumor promoters or suppressors in CRC. In this review, we provide an overview of E3 ligases in modulating various biological processes in CRC, including proliferation, migration, stemness, metabolism, cell death, differentiation and immune response of CRC cells, emphasizing the pluripotency of E3 ubiquitin ligases. We further focus on the role of E3 ligases in regulating vital cellular signal pathways in CRC, such as Wnt/β-catenin pathway and NF-κB pathway. Additionally, considering the potential of E3 ligases as novel targets in the treatment of CRC, we discuss what aspects of E3 ligases can be utilized and exploited for efficient therapeutic strategies.
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Affiliation(s)
- Jie Chen
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Haimei Feng
- Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Yiting Wang
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Xiaoming Bai
- Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China
| | - Siqi Sheng
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Huiyu Li
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Mengxi Huang
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China.
| | - Xiaoyuan Chu
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, Nanjing Medical university, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu Province, China.
| | - Zengjie Lei
- Department of Medical Oncology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, Nanjing Medical university, Nanjing, Jiangsu Province, China.
- Department of Medical Oncology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu Province, China.
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Gu D, Cao T, Yi S, Liu Y, Fan C. CCCTC-Binding Factor Mediates the Transcription of Insulin-Like Growth Factor Binding Protein 5 Through EZH2 in Ulcerative Colitis. Dig Dis Sci 2023; 68:778-790. [PMID: 35705732 DOI: 10.1007/s10620-022-07566-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 05/11/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND Ulcerative colitis (UC) features chronic, non-infectious inflammation of the colon. Insulin-like growth factor binding protein 5 (IGFBP5) has been indicated to be related to various inflammation-related diseases. However, its association with UC remains largely unclear. AIMS Here, we investigate the role of IGFBP5 in colonic mucosal epithelial cell injury in UC. METHODS Differentially expressed genes in the colonic tissues of UC mice were screened using the Gene Expression Omnibus database, and IGFBP5 was identified. UC mice were developed using dextran sulfate sodium, and IGFBP5 expression in the colonic tissues of UC mice was confirmed by immunohistochemistry and RT-qPCR. The effects of IGFBP5 in vivo and in vitro were investigated by intraperitoneal injection of adeno-associated virus into UC mice or by transfection with an IGFBP5 overexpression plasmid into lipopolysaccharide-treated colonic mucosal epithelial cells. The mechanisms causing IGFBP5 deletion in UC were predicted by bioinformatics analysis and ChIP-qPCR and verified by rescue experiments. RESULTS IGFBP5 was reduced in UC. IGFBP5 impaired the NFκB pathway in the colonic tissue of UC mice and ameliorated inflammatory infiltration and colonic mucosal cell injury. IGFBP5 depletion was associated with H3K27me3 modification, which was induced by EZH2. CTCF was responsible for recruiting EZH2 to the promoter region of IGFBP5. CTCF inhibition repressed UC progression by reducing H3K27me3 modification via the discouragement of the enrichment of EZH2 in the IGFBP5 promoter. CONCLUSIONS CTCF modulates H3K27me3 modification of the IGFBP5 promoter by recruiting EZH2, thereby downregulating IGFBP5 to accentuate colonic mucosal epithelial cell injury in UC mice.
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Affiliation(s)
- Dan Gu
- Department of Gastroenterology, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Ting Cao
- Department of Gastroenterology, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Shijie Yi
- Department of Gastrointestinal Surgery, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Ya Liu
- Department of Anorectal Surgery, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, No. 336, Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, People's Republic of China
| | - Chao Fan
- Department of Anorectal Surgery, Hengyang Medical School, The Affiliated Nanhua Hospital, University of South China, No. 336, Dongfeng South Road, Zhuhui District, Hengyang, 421001, Hunan, People's Republic of China.
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8
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Jiang M, Tang C, Yang M, Li Y, Wang W, Wang C, Wei W, Chen J. Paeoniflorin-6'-O-benzene sulfonate protected the intestinal epithelial barrier by restoring the inhibitory effect of GRK2 and β-arrestin 2 on ERK1/2-NF-κB. Phytother Res 2023; 37:743-758. [PMID: 36223242 DOI: 10.1002/ptr.7657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/02/2022] [Accepted: 07/09/2022] [Indexed: 11/11/2022]
Abstract
Peoniflorin-6'-O-benzene sulfonate (CP-25) inhibited the activity of GRK2 to exert anti-inflammatory and immunomodulatory effects. This study aimed to investigate the effect of CP-25 the intestinal epithelial barrier and the mechanism. CaCO-2 cell monolayer and dextran sulfate salt (DSS)-induced colitis mouse model was used to evaluate intestinal epithelial barrier function in vitro and in vivo, respectively. Results showed that CP-25 prevented dysfunction of the intestinal epithelial barrier and inhibited NF-κB p65 activation in TNF-α-induced CaCO-2 cells. The colon structure destroyed in DSS-induced colitis mice was improved by CP-25. CP-25 has a role in inhibition membrane translocation of GRK2-β-arrestin 2 complex, stabilization of the binding of GRK2 and β-arrestin 2 to ERK1/2 in cytoplasm. Subsequently down-regulated the nuclear transcription and transactivation of NF-κB p65 via inhibiting its phosphorylation of Ser536, and Ser276, respectively and restored the epithelial barrier function. In conclusion, CP-25 inhibited ERK1/2-NF-κB activation and thereby protected the intestinal epithelial barrier, which was associated with restoring the inhibition of GRK2 and β-arrestin 2 on ERK1/2.
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Affiliation(s)
- Mengya Jiang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Caihong Tang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Mei Yang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Ying Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Wu Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Chun Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
| | - Jingyu Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, People's Republic of China
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9
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Wang X, Chen S, Wang J, Chen Y, Guo Y, Wang Q, Liu Z, Zeng H, Xu C. Olfactomedin-4 deletion exacerbates DSS-induced colitis through a matrix metalloproteinase-9-dependent mechanism. Int J Biol Sci 2023; 19:2150-2166. [PMID: 37151883 PMCID: PMC10158032 DOI: 10.7150/ijbs.80441] [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: 11/02/2022] [Accepted: 03/30/2023] [Indexed: 05/09/2023] Open
Abstract
Background and Aims: Olfactomedin-4 is a glycoprotein that is upregulated in inflamed gastrointestinal tissues. This study aimed to investigate the role and underlying mechanisms of olfactomedin-4 in ulcerative colitis. Methods: C57BL/6 mice and olfactomedin-4 knockout mice were fed dextran sulfate sodium in drinking water to establish a colitis model. An in vitro inflammation model was constructed in HCT116 and NCM460 cells stimulated with lipopolysaccharide. The expression of olfactomedin-4 was detected by Western blotting, immunohistochemistry staining, and qRT‒PCR. The differences in the severity of colitis between olfactomedin-4 knockout mice and wild-type mice were compared, and the underlying mechanisms were explored. Results: Olfactomedin-4 expression was significantly upregulated in colonic tissues of active ulcerative colitis patients and in cellular and mouse models of colitis. Compared with wild-type littermates, olfactomedin-4 knockout mice were more susceptible to dextran sulfate sodium-induced colitis and produced higher levels of proinflammatory cytokines and chemokines. In addition, olfactomedin-4 deficiency significantly promoted intestinal epithelial cell apoptosis and increased intestinal permeability, which was mediated by the p53 pathway. Moreover, olfactomedin-4 directly interacted with and negatively regulated matrix metalloproteinase-9. Inhibiting matrix metalloproteinase-9 significantly decreased colonic p53 expression and ameliorated experimental colitis in olfactomedin-4 knockout mice, while overexpression of matrix metalloproteinase-9 aggravated colitis. Further experiments showed that matrix metalloproteinase-9 regulated p53 through the Notch1 signaling pathway to promote ulcerative colitis progression. Conclusions: Olfactomedin-4 is significantly upregulated in ulcerative colitis and may protect against colitis by directly inhibiting matrix metalloproteinase-9 and further decreasing p53-mediated apoptosis via Notch1 signaling.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Chengfu Xu
- ✉ Corresponding author: Chengfu Xu, MD, Department of Gastroenterology, the First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou 310003, China. Telephone: +86-571-87236863; . ORCID: 0000-0002-6172-1253
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10
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Zhang J, Cen L, Zhang X, Tang C, Chen Y, Zhang Y, Yu M, Lu C, Li M, Li S, Lin B, Zhang T, Song X, Yu C, Wu H, Shen Z. MPST deficiency promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via AKT. Redox Biol 2022; 56:102469. [PMID: 36126419 PMCID: PMC9486620 DOI: 10.1016/j.redox.2022.102469] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/26/2022] [Accepted: 09/06/2022] [Indexed: 11/26/2022] Open
Abstract
Background & aims Excessive inflammatory responses and oxidative stress are considered the main characteristics of inflammatory bowel disease (IBD). Endogenous hydrogen sulfide (H2S) has been reported to show anti-inflammatory activity in IBD. The main aim of this study was to explore the role of 3-mercaptopyruvate sulfurtransferase (MPST), a key enzyme that regulates endogenous H2S biosynthesis, in IBD. Methods Colonic MPST expression was evaluated in mice and patients with IBD. Various approaches were used to explore the concrete mechanism underlying MPST regulation of the progression of colitis through in vivo and in vitro models. Results MPST expression was markedly decreased in colonic samples from patients with ulcerative colitis (UC) or Crohn's disease (CD) and from mice treated with DSS. MPST deficiency significantly aggravated the symptoms of murine colitis, exacerbated inflammatory responses and apoptosis, and inhibited epithelium stem cell-derived organoid formation in an H2S-independent manner. Consistently, when HT29 cells were treated with TNF-α, inhibition of MPST significantly increased the expression of proinflammatory cytokines, the amount of ROS and the prevalence of apoptosis, whereas overexpression of MPST markedly improved these effects. RNA-seq analysis showed that MPST might play a role in regulating apoptosis through AKT signaling. Mechanistically, MPST directly interacted with AKT and reduced the phosphorylation of AKT. Additionally, MPST expression was positively correlated with AKT expression in human IBD samples. In addition, overexpression of AKT rescued IEC apoptosis caused by MPST deficiency, while inhibition of AKT significantly aggravated it. Conclusions MPST protects the intestines from inflammation most likely by regulating the AKT/apoptosis axis in IECs. Our results may provide a novel therapeutic strategy for the treatment of colitis.
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Affiliation(s)
- Jie Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Li Cen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xiaofen Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chenxi Tang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yishu Chen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yuwei Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Mengli Yu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chao Lu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Meng Li
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Sha Li
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Bingru Lin
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Tiantian Zhang
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xin Song
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chaohui Yu
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Hao Wu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Zhe Shen
- The Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
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11
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Zou G, Liu Z, Fang C, Xie Y, Wang D. Qing-Ying-Tang alleviates psoriasis by suppressing proliferation and inflammatory response of keratinocytes via EZH2/NF-κB. Eur J Integr Med 2022. [DOI: 10.1016/j.eujim.2022.102170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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12
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Nair VS, Heredia M, Samsom J, Huehn J. Impact of gut microenvironment on epigenetic signatures of intestinal T helper cell subsets. Immunol Lett 2022; 246:27-36. [DOI: 10.1016/j.imlet.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
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13
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Zhang X, Tang X, Pan L, Li Y, Li J, Li C. Elevated lncRNA-UCA1 upregulates EZH2 to promote inflammatory response in sepsis-induced pneumonia via inhibiting HOXA1. Carcinogenesis 2022; 43:371-381. [PMID: 35018436 DOI: 10.1093/carcin/bgac004] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 12/13/2021] [Accepted: 01/07/2022] [Indexed: 11/13/2022] Open
Abstract
Sepsis is characterized by a dysregulated inflammatory response. We aimed to explore the role of the long non-coding RNA urothelial carcinoma associated 1 (lncRNA UCA1)/enhancer of zeste homolog 2 (EZH2)/homeobox A1 (HOXA1) axis in sepsis-induced pneumonia. The sepsis rat models and RLE-6TN cellular sepsis-induced pneumonia models were established using ligation and puncture (CLP) and lipopolysaccharide (LPS). The expression of UCA1, EZH2 and HOXA1 in rat lung tissues and RLE-6TN cells was detected. Then, the CLP rats were respectively treated with UCA1 up-regulation or UCA1 silencing, EZH2 overexpression to measure their roles in the pathology, apoptosis, inflammation and NF-κB mRNA and phosphorylated NF-κB p-65 levels in CLP rat lung tissues. The cells were subjected to same treatment to examine the effects of UCA1, EZH2 and HOXA1 on viability, apoptosis, inflammation and NF-κB mRNA and phosphorylated NF-κB p-65 levels in LPS-induced RLE-6TN cells. The interactions among UCA1, EZH2 and HOXA1 were identified. UCA1 and EZH2 were upregulated while HOXA1 was downregulated in CLP rat lung tissues and LPS-induced RLE-6TN cells. Elevated UCA1 or increased EZH2 aggravated pathology and promoted apoptosis, inflammation and NF-κB mRNA and phosphorylated NF-κB p-65 levels in CLP rat lung tissues, and inhibited viability while facilitated apoptosis, inflammation and NF-κB mRNA and phosphorylated NF-κB p-65 levels in LPS-induced RLE-6TN cells. UCA1 inhibition exerted contrary effects. Silenced EZH2 reversed the effects of UCA1 elevation on sepsis-induced pneumonia. UCA1 targeted EZH2 that interacted with HOXA1. UCA1 overexpression upregulates EZH2 to repress HOXA1 expression, thus aggravating the progression of sepsis-induced pneumonia, which could be alleviated by EZH2 inhibition.
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Affiliation(s)
- Xiaoqin Zhang
- Department of Intensive Care Unit, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xuemei Tang
- Department of Intensive Care Unit, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Lingai Pan
- Department of Intensive Care Unit, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yongheng Li
- Department of neurosurgery, Medical Center Hospital of QiongLai City, Chengdu 611530, China
| | - Junlei Li
- Department of Intensive Care Unit, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chunling Li
- Department of Intensive Care Unit, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 611731, China
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14
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Cao YC, Shan SK, Guo B, Li CC, Li FXZ, Zheng MH, Xu QS, Wang Y, Lei LM, Tang KX, Ou-Yang WL, Duan JY, Wu YY, Ullah MHE, Zhou ZA, Xu F, Lin X, Wu F, Liao XB, Yuan LQ. Histone Lysine Methylation Modification and Its Role in Vascular Calcification. Front Endocrinol (Lausanne) 2022; 13:863708. [PMID: 35784574 PMCID: PMC9243330 DOI: 10.3389/fendo.2022.863708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/06/2022] [Indexed: 01/10/2023] Open
Abstract
Histone methylation is an epigenetic change mediated by histone methyltransferase, and has been connected to the beginning and progression of several diseases. The most common ailments that affect the elderly are cardiovascular and cerebrovascular disorders. They are the leading causes of death, and their incidence is linked to vascular calcification (VC). The key mechanism of VC is the transformation of vascular smooth muscle cells (VSMCs) into osteoblast-like phenotypes, which is a highly adjustable process involving a variety of complex pathophysiological processes, such as metabolic abnormalities, apoptosis, oxidative stress and signalling pathways. Many researchers have investigated the mechanism of VC and related targets for the prevention and treatment of cardiovascular and cerebrovascular diseases. Their findings revealed that histone lysine methylation modification may play a key role in the various stages of VC. As a result, a thorough examination of the role and mechanism of lysine methylation modification in physiological and pathological states is critical, not only for identifying specific molecular markers of VC and new therapeutic targets, but also for directing the development of new related drugs. Finally, we provide this review to discover the association between histone methylation modification and VC, as well as diverse approaches with which to investigate the pathophysiology of VC and prospective treatment possibilities.
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Affiliation(s)
- Ye-Chi Cao
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Su-Kang Shan
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bei Guo
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chang-Chun Li
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fu-Xing-Zi Li
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ming-Hui Zheng
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiu-Shuang Xu
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yi Wang
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Li-Min Lei
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ke-Xin Tang
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wen-Lu Ou-Yang
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jia-Yue Duan
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yun-Yun Wu
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Muhammad Hasnain Ehsan Ullah
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhi-Ang Zhou
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Feng Xu
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiao Lin
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Feng Wu
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiao-Bo Liao
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ling-Qing Yuan
- National Clinical Research Center for Metabolic Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Ling-Qing Yuan,
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15
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EZH2 Might Affect Macrophage Chemotaxis and Anti-Inflammatory Factors by Regulating CCL2 in Dental Pulp Inflammation. Stem Cells Int 2021; 2021:3060480. [PMID: 34899918 PMCID: PMC8654562 DOI: 10.1155/2021/3060480] [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: 09/03/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 11/18/2022] Open
Abstract
Objectives We aimed to evaluate the effects of Enhancer of Zeste Homolog 2 (EZH2) on regulation of macrophage migration and expression of anti-inflammatory genes in pulpitis. Methods Dental pulp inflammation was verified by histology in rat pulpitis model induced by lipopolysaccharide (LPS). Immunohistochemistry staining was used to detect changes of the expression of EZH2 and tumor necrosis factor alpha (TNF-α) in dental pulp inflammation. The expression of EZH2, CCL2, and cluster of differentiation 68 (CD68: macrophage surface marker) was measured by immunofluorescence staining. The effect of EZH2 on microphage migration was assessed by cell migration assay. The expressions of anti-inflammatory cytokine interleukins (IL-4 and IL-10) and transforming growth factor-β (TGF-β) in HDPCs which were treated by EZH2 complex, CCL2 complex, and CCL2 antibody were examined by quantitative real-time polymerase chain reaction (q-PCR). Results The expression of TNF-α gradually increased in dental pulp inflammation. The expression of EZH2 in dental pulp decreased in 8 hours after LPS stimulation. However, the expression of EZH2 gradually increased in dental pulp after 1 day stimulation by LPS. The results of immunofluorescence staining showed that the expressions of EZH2, CCL2, and CD68 were significantly upregulated in dental pulp inflammation of rats. EZH2 could enhance macrophage migration. And the chemotactic activity of macrophages exposed to supernatants of EZH2-treated HDPCs could be inhibited by CCL2 inhibition. In addition, EZH2 suppressed the expression of anti-inflammatory genes, but CCL2 inhibition reversed the downregulation of anti-inflammatory factors, including IL-4 and TGF-β in HDPCs. Conclusions EZH2 might affect chemotaxis of macrophages and the expression of anti-inflammatory factors by regulating CCL2. EZH2 plays an important role in the development of dental pulp inflammation, and it might be as a target for treatment of pulpitis.
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16
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Zhang LC, Wu XY, Yang RB, Chen F, Liu JH, Hu YY, Wu ZD, Wang LF, Sun X. Recombinant protein Schistosoma japonicum-derived molecule attenuates dextran sulfate sodium-induced colitis by inhibiting miRNA-217-5p to alleviate apoptosis. World J Gastroenterol 2021; 27:7982-7994. [PMID: 35046625 PMCID: PMC8678816 DOI: 10.3748/wjg.v27.i46.7982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/09/2021] [Accepted: 11/29/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Inflammatory bowel disease (IBD) affects millions of people worldwide and has emerged as a growing problem in industrialized nations. The lack of therapeutic targets has limited the treatment of IBD. Studies found that parasitic nematode infections can ameliorate clinical and experimental colitis. Our previous study found that rSj16, a 16-kDa secreted protein of Schistosoma japonicum produced by Escherichia coli, has protective effects on dextran sulfate sodium (DSS)-induced colitis in mice. Apoptosis is an important factor in the pathogenesis of colitis. However, it is not clear whether the effect of rSj16 on colitis is related to apoptosis.
AIM To investigate whether the protective effects of rSj16 on colitis is related to apoptosis and its mechanism.
METHODS In-vivo, colitis was induced by DSS. The severity of colitis was assessed. WB was used to detect the changes of apoptosis-related genes in colon tissues. Q-PCR was used to detect the changes of miRNA-217-5p and HNF1B. In-vitro, WB was used to detect the changes of apoptosis-related genes in intestinal epithelial cells. TUNNEL staining and flow cytometry were used to detect cell apoptosis.
RESULTS rSj16 attenuates clinical activity in DSS-induced colitis mice. TUNNEL staining and WB results showed that apoptosis was increased in colon tissue after treatment with DSS, and the apoptosis of colon tissue was significantly reduced after treatment with rSj16. Compared with normal mice, the expression of miR-217-5p was increased in colon tissue of DSS-induced colitis mice. In addition, the miR-217-5p target gene hnf1b was decreased after administration of DSS. After treatment with rSj16, the expression of miR-217-5p was decreased and the expression of HNF1B was increased compared with the DSS-treated group. When Etoposide was used in combination with miR-217-5p mimic on MODE-K cells, the expression of cleaved-Caspase-3 and Bax was increased, and Bcl-2 was decreased compared with only Etoposide treatment, the expression of HNF1B was significantly reduced, suggesting that miR-217-5p acts as a pro-apoptotic in colon epithelial cells and down-regulates the target gene hnf1b. After rSj16 administration in MODE-K cells, miR-217-5p expression was significantly decreased, HNF1B expression was increased, and apoptosis was reduced.
CONCLUSION The protective effects of rSj16 on colitis is related to apoptosis and miRNA-217-5p may be a further target for therapeutic intervention against IBD.
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Affiliation(s)
- Li-Chao Zhang
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Xiao-Ying Wu
- Department of Gastroenterology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Rui-Bing Yang
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Fang Chen
- School of Medicine, South China University of Technology, South China University of Technology, Guangzhou 510000, Guangdong Province, China
| | - Jia-Hua Liu
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Yun-Yi Hu
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Zhong-Dao Wu
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Li-Fu Wang
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Xi Sun
- Department of Parasitology of Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
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17
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Su H, Huang J, Weng S, Zhang B, Zhang T, Xu Y. Glutathione synthesis primes monocytes metabolic and epigenetic pathway for β-glucan-trained immunity. Redox Biol 2021; 48:102206. [PMID: 34894475 PMCID: PMC8669111 DOI: 10.1016/j.redox.2021.102206] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/23/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022] Open
Abstract
Trained monocytes and macrophages produce reactive oxygen species (ROS), which trigger antioxidative glutathione (GSH) response to buffer the rising ROS. However, whether and how the trained immunity is shaped by GSH synthesis remains unknown. Here, we report that β-glucan-trained macrophages from mice harboring a myeloid-specific deletion of the catalytic subunit of glutamate-cysteine ligase (Gclc) showed impaired GSH synthesis and decreased proinflammatory cytokine production in response to lipopolysaccharide challenge. Gclc deficiency compromised the activation of mammalian target of rapamycin-1 (mTOR) and expression of c-Myc transcription factors, abrogating the energy utilization and the metabolic reprogramming that allows β-glucan-trained macrophages to switch to glycolysis and glutaminolysis. Furthermore, Gclc deletion repressed effective H3K27me3 demethylation in the promoters of immunometabolic genes, such as Gls, Hk2, and Glut1, in β-glucan-trained macrophages by promoting the methyltransferase enhancer of zeste homolog 2 (EZH2). In vivo, myeloid-specific ablation of Gclc decreased the secretion of proinflammatory cytokines upon rechallenge with Candida albicans and these animals were less protected against the infection, compared with control littermates. Moreover, pharmacological inhibition of EZH2 enhanced the trained immunity response against Candida infection in Gclc-deficient mouse and human peripheral blood mononuclear cells treated with GCLC inhibitor buthionine sulfoximine (BSO). Thus, antioxidative GSH synthesis supports an environment conducive to β-glucan-induced metabolic and epigenetic reprogramming in trained immunity, allowing exploration of its functional consequences in autoimmune or inflammatory disease.
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Affiliation(s)
- Haibo Su
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China.
| | - Jiaxin Huang
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China
| | - Shufeng Weng
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China
| | - Baoying Zhang
- GMU-GIBH Joint School of Life Science, Guangzhou Medical University, No. 195 Dongfengxi Road, Guangzhou, 510000, China
| | - Tianran Zhang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China
| | - Ying Xu
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, No. 220 Handan Road, Shanghai, 200433, China.
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18
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Kosinsky RL, Zerche M, Kutschat AP, Nair A, Ye Z, Saul D, von Heesen M, Friton JJ, Schwarzer AC, Paglilla N, Sheikh SZ, Wegwitz F, Sun Z, Ghadimi M, Newberry RD, Sartor RB, Faubion WA, Johnsen SA. RNF20 and RNF40 regulate vitamin D receptor-dependent signaling in inflammatory bowel disease. Cell Death Differ 2021; 28:3161-3175. [PMID: 34088983 PMCID: PMC8563960 DOI: 10.1038/s41418-021-00808-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 02/04/2023] Open
Abstract
Despite the identification of several genetic factors linked to increased susceptibility to inflammatory bowel disease (IBD), underlying molecular mechanisms remain to be elucidated in detail. The ubiquitin ligases RNF20 and RNF40 mediate the monoubiquitination of histone H2B at lysine 120 (H2Bub1) and were shown to play context-dependent roles in the development of inflammation. Here, we aimed to examine the function of the RNF20/RNF40/H2Bub1 axis in intestinal inflammation in IBD patients and mouse models. For this purpose, intestinal sections from IBD patients were immunohistochemically stained for H2Bub1. Rnf20 or Rnf40 were conditionally deleted in the mouse intestine and mice were monitored for inflammation-associated symptoms. Using mRNA-seq and chromatin immunoprecipitation (ChIP)-seq, we analyzed underlying molecular pathways in primary intestinal epithelial cells (IECs) isolated from these animals and confirmed these findings in IBD resection specimens using ChIP-seq.The majority (80%) of IBD patients displayed a loss of H2Bub1 levels in inflamed areas and the intestine-specific deletion of Rnf20 or Rnf40 resulted in spontaneous colorectal inflammation in mice. Consistently, deletion of Rnf20 or Rnf40 promoted IBD-associated gene expression programs, including deregulation of various IBD risk genes in these animals. Further analysis of murine IECs revealed that H3K4me3 occupancy and transcription of the Vitamin D Receptor (Vdr) gene and VDR target genes is RNF20/40-dependent. Finally, these effects were confirmed in a subgroup of Crohn's disease patients which displayed epigenetic and expression changes in RNF20/40-dependent gene signatures. Our findings reveal that loss of H2B monoubiquitination promotes intestinal inflammation via decreased VDR activity thereby identifying RNF20 and RNF40 as critical regulators of IBD.
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Affiliation(s)
- Robyn Laura Kosinsky
- grid.66875.3a0000 0004 0459 167XDivision of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN USA
| | - Maria Zerche
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Ana Patricia Kutschat
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Asha Nair
- grid.66875.3a0000 0004 0459 167XDivision of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN USA
| | - Zhenqing Ye
- grid.66875.3a0000 0004 0459 167XDivision of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN USA
| | - Dominik Saul
- grid.66875.3a0000 0004 0459 167XKogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN USA
| | - Maximilian von Heesen
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Jessica J. Friton
- grid.66875.3a0000 0004 0459 167XDivision of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN USA
| | - Ana Carolina Schwarzer
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Nadia Paglilla
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Shehzad Z. Sheikh
- grid.10698.360000000122483208Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC USA
| | - Florian Wegwitz
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Zhifu Sun
- grid.66875.3a0000 0004 0459 167XDivision of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN USA
| | - Michael Ghadimi
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Rodney D. Newberry
- grid.4367.60000 0001 2355 7002Division of Gastroenterology, Washington University School of Medicine, St. Louis, MO USA
| | - R. Balfour Sartor
- grid.10698.360000000122483208Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC USA
| | - William A. Faubion
- grid.66875.3a0000 0004 0459 167XDivision of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN USA
| | - Steven A. Johnsen
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Goettingen, Germany ,grid.66875.3a0000 0004 0459 167XGene Regulatory Mechanisms and Molecular Epigenetics Laboratory, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN USA
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19
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Liu Y, Tu CE, Guo X, Wu C, Gu C, Lai Q, Fang Y, Huang J, Wang Z, Li A, Liu S. Tumor-suppressive function of EZH2 is through inhibiting glutaminase. Cell Death Dis 2021; 12:975. [PMID: 34671029 PMCID: PMC8528894 DOI: 10.1038/s41419-021-04212-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/26/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023]
Abstract
Tumors can use metabolic reprogramming to survive nutrient stress. Epigenetic regulators play a critical role in metabolic adaptation. Here we screened a sgRNA library to identify epigenetic regulators responsible for the vulnerability of colorectal cancer (CRC) cells to glucose deprivation and found that more EZH2-knockout cells survived glucose deprivation. Then, we showed that EZH2 expression was significantly downregulated in response to glucose deprivation in a glucose-sensitive CRC cell line, and EZH2-knockdown cells were more resistant to glucose deprivation. Mechanistically, EZH2 deficiency upregulated the expression of glutaminase (GLS) and promoted the production of glutamate, which in turn led to increased synthesis of intracellular glutathione (GSH) and eventually attenuated the reactive oxygen species (ROS)-mediated cell death induced by glucose deprivation. Although EZH2 functioned as an oncogene in cancer progression and EZH2 knockout abolished colorectal cancer development in a mouse model, here we revealed a mechanistic link between EZH2 and metabolic reprogramming via the direct regulation of GLS expression and observed a negative correlation between EZH2 and GLS expression in colorectal cancer tissues. These findings further confirmed the importance of heterogeneity, provided an explanation for the clinical tolerance of cancer cells to EZH2 inhibitors from the perspective of metabolism, and proposed the possibility of combining EZH2 inhibitors and glutamine metabolism inhibitors for the treatment of cancer.
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Affiliation(s)
- Yongfeng Liu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Cheng-E Tu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xuxue Guo
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Changjie Wu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Chuncai Gu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Qiuhua Lai
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yuxin Fang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Junqi Huang
- Laboratory for Regenerative Medicine, Ministry of Education, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Zhizhang Wang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Aimin Li
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Side Liu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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20
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Yan T, Luo Y, Xia Y, Hamada K, Wang Q, Yan N, Krausz KW, Ward JM, Hao H, Wang P, Gonzalez FJ. St. John's Wort alleviates dextran sodium sulfate-induced colitis through pregnane X receptor-dependent NFκB antagonism. FASEB J 2021; 35:e21968. [PMID: 34644426 PMCID: PMC10167919 DOI: 10.1096/fj.202001098r] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/04/2021] [Accepted: 09/17/2021] [Indexed: 12/13/2022]
Abstract
St. John's wort (SJW), from traditional herbs, activates the pregnane X receptor (PXR), a potential drug target for treating inflammatory bowel disease (IBD). However, how SJW alleviates dextran sodium sulfate (DSS)-induced experimental IBD by activating PXR is unknown. To test this, PXR-humanized, wild-type (WT) and Pxr-null mice, primary intestinal organoids cultures, and the luciferase reporter gene assays were employed. In vivo, a diet supplemented with SJW was found to activate intestinal PXR both in WT and PXR-humanized mice, but not in Pxr-null mice. SJW prevented DSS-induced IBD in PXR-humanized and WT mice, but not in Pxr-null mice. In vitro, hyperforin, a major component of SJW, activated PXR and suppressed tumor necrosis factor (TNF)α-induced nuclear factor (NF) κB translocation in primary intestinal organoids from PXR-humanized mice, but not Pxr-null mice. Luciferase reporter gene assays showed that hyperforin dose-dependently alleviated TNFα-induced NFκB transactivation by activating human PXR in Caco2 cells. Furthermore, SJW therapeutically attenuated DSS-induced IBD in PXR-humanized mice. These data indicate the therapeutic potential of SJW in alleviating DSS-induced IBD in vivo, and TNFα-induced NFκB activation in vitro, dependent on PXR activation, which may have clinical implications for using SJW as a herbal drug anti-IBD treatment.
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Affiliation(s)
- Tingting Yan
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Yuhong Luo
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Yangliu Xia
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Keisuke Hamada
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Qiong Wang
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Nana Yan
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.,State Key Laboratory of Natural Medicines, Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Kristopher W Krausz
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jerrold M Ward
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Haiping Hao
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Ping Wang
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.,Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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21
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DZNep protects against retinal ganglion cell death in an NMDA-induced mouse model of retinal degeneration. Exp Eye Res 2021; 212:108785. [PMID: 34600894 DOI: 10.1016/j.exer.2021.108785] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/10/2021] [Accepted: 09/28/2021] [Indexed: 02/08/2023]
Abstract
Epigenetic gene enhancer of zeste homolog-2 (Ezh2) is reported to be associated with ocular neurodegenerative diseases; however, its underlying mechanism is poorly understood. The present study aimed to determine the role of 3-deazaneplanocin A (DZNep), which inhibits the transcription of Ezh2 by reducing the trimethylation of histone 3 lysine 27 (H3K27me3), in a retinal ganglion cell (RGC) degeneration model. Retinal damage was caused by intravitreal injection of N-methyl-D-aspartate (NMDA). DZNep and the vehicle control were intravitreally applied immediately post-NMDA injection. The severity of retinal damage was evaluated by immunofluorescence and terminal deoxyribonucleotide transferase (TdT)-mediated dUTP nick end labeling (TUNEL) staining, and retinal function was determined by electroretinogram (ERG). The transcriptome was examined by RNA sequencing and quantitative PCR (qPCR). Microglial cells were detected by immunohistochemistry. DZNep significantly prevented the cell death in the ganglion cell layer (GCL) and inner nuclear layer (INL) induced by NMDA. DZNep preserved the ERG b- and a-wave amplitudes and the b/a ratio in NMDA-treated mice. Moreover, RNA sequencing and qPCR revealed that neuroprotective genes were upregulated and played an important role in preserving retinal cells. In addition, DZNep inhibited the NMDA-induced activation of microglial cells. Our results suggest that H3K27me3 controls RGC survival at the transcriptional and epigenetic levels. The absence of H3K27me3 deposition upregulates neuroprotective genes to protect RGCs. Therefore, DZNep, which inhibits Ezh2 activity, could be a novel therapeutic treatment for ocular neurodegenerative diseases.
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22
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Li J, Pan X, Ren Z, Li B, Liu H, Wu C, Dong X, de Vos P, Pan LL, Sun J. Protein arginine methyltransferase 2 (PRMT2) promotes dextran sulfate sodium-induced colitis by inhibiting the SOCS3 promoter via histone H3R8 asymmetric dimethylation. Br J Pharmacol 2021; 179:141-158. [PMID: 34599829 DOI: 10.1111/bph.15695] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND PURPOSE There is emerging evidence for a critical role for epigenetic modifiers in the development of inflammatory bowel disease (IBD). Protein arginine methyltransferase 2 (PRMT2) is responsible for the methylation of arginine residues on histones and targets transcription factors involved in many cellular processes, including gene transcription, mRNA splicing, cell proliferation, and cell differentiation. In this study, the role and underlying mechanisms of PRMT2 in colitis were studied. EXPERIMENTAL APPROACH A mouse dextran sulfate sodium (DSS)-induced experimental colitis model was used to study PRMT2 in colitis. Lentivirus-induced PRMT2 silencing or overexpression in vivo was applied to address the role of PRMT2 in colitis. Detailed western blot and expression analysis were done to understand epigenetic changes induced by PRMT2 in colitis. KEY RESULTS PRMT2 is highly expressed in inflammatory bowel disease patients, in inflamed murine colon and in TNF-α stimulated murine gut epithelial cells. PRMT2 overexpression aggravates, while knockdown alleviates DSS-induced colitis, suggesting that PRMT2 is a pivotal mediator of colitis in mice. Mechanistically, PRMT2 mediates colitis by increasing repressive histone mark H3R8 asymmetric methylation (H3R8me2a) at the promoter region of the suppressor of cytokine signalling 3 promoter (SOCS3). Resultant inhibition of SOCS3 expression and inhibition of SOCS3-mediated degradation of TNF receptor associated factor 5 (TRAF5) via ubiquitination led to elevated TRAF5 expression and TRAF5-mediated downstream NF-κB/MAPK activation. CONCLUSION AND IMPLICATIONS Our study demonstrates that PRMT2 acts as a transcriptional co-activator for proinflammatory genes during colitis. Hence, targeting PRMT2 may provide a novel therapeutic approach for colitis.
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Affiliation(s)
- Jiahong Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Xiaohua Pan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Zhengnan Ren
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Binbin Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - He Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Chengfei Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Xiaoliang Dong
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Paul de Vos
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Li-Long Pan
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Jia Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
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23
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Kitchen GB, Hopwood T, Gali Ramamoorthy T, Downton P, Begley N, Hussell T, Dockrell DH, Gibbs JE, Ray DW, Loudon ASI. The histone methyltransferase Ezh2 restrains macrophage inflammatory responses. FASEB J 2021; 35:e21843. [PMID: 34464475 PMCID: PMC8573545 DOI: 10.1096/fj.202100044rrr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 07/06/2021] [Accepted: 07/23/2021] [Indexed: 01/02/2023]
Abstract
Robust inflammatory responses are critical to survival following respiratory infection, with current attention focused on the clinical consequences of the Coronavirus pandemic. Epigenetic factors are increasingly recognized as important determinants of immune responses, and EZH2 is a prominent target due to the availability of highly specific and efficacious antagonists. However, very little is known about the role of EZH2 in the myeloid lineage. Here, we show EZH2 acts in macrophages to limit inflammatory responses to activation, and in neutrophils for chemotaxis. Selective genetic deletion in macrophages results in a remarkable gain in protection from infection with the prevalent lung pathogen, pneumococcus. In contrast, neutrophils lacking EZH2 showed impaired mobility in response to chemotactic signals, and resulted in increased susceptibility to pneumococcus. In summary, EZH2 shows complex, and divergent roles in different myeloid lineages, likely contributing to the earlier conflicting reports. Compounds targeting EZH2 are likely to impair mucosal immunity; however, they may prove useful for conditions driven by pulmonary neutrophil influx, such as adult respiratory distress syndrome.
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Affiliation(s)
- Gareth B. Kitchen
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
- Manchester University NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK
| | - Thomas Hopwood
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Thanuja Gali Ramamoorthy
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Polly Downton
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Nicola Begley
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Tracy Hussell
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - David H. Dockrell
- Department of Infection Medicine and MRC Centre for Inflammation ResearchUniversity of EdinburghEdinburghUK
| | - Julie E. Gibbs
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - David W. Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe HospitalOxfordUK
- Oxford Centre for Diabetes, Endocrinology and MetabolismUniversity of OxfordOxfordUK
| | - Andrew S. I. Loudon
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
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24
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Chen P, Zhu H, Mao Y, Zhuo M, Yu Y, Chen M, Zhao Q, Li L, Wu M, Ye M. SETD8 involved in the progression of inflammatory bowel disease via epigenetically regulating p62 expression. J Gastroenterol Hepatol 2021; 36:2850-2863. [PMID: 33991018 DOI: 10.1111/jgh.15550] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/16/2021] [Accepted: 05/10/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIM Epigenetic modification is an important part of the pathogenesis of inflammatory bowel disease (IBD). Some studies proved that p62 was involved in inflammatory response and upregulated in IBD patients, and histone modification plays an important role in regulating p62 expression. SETD8, a histone H4K20 methyltransferase, has been reported downregulated in some inflammatory diseases. Here, we investigated the role of SETD8 in the development of IBD and its underlying mechanisms. METHODS An inflammatory cell model was established to elucidate whether SETD8 involved in inflammatory response in macrophages. Three percent dextran sodium sulfate-induced colitis murine model injection with SETD8 inhibitor was used in our study to investigate whether SETD8 inhibition can affect the progress of IBD. The expression of SETD8 and p62 was measured by qRT-PCR and western blot. The mRNA level of inflammatory cytokines was analyzed by qRT-PCR. In addition, chromatin immunoprecipitation-PCR was performed to identify the mechanism by which SETD8 regulates p62. RESULTS SETD8 expression obviously decreased in vitro, in vivo models and in IBD patients. In lipopolysaccharide-activated RAW264.7 cells, knockdown of SETD8 significantly increased the mRNA expression of inducible nitric oxide synthase, cyclooxygenase-2, TNF-α, IL-6, IL-1β, and MCP-1. Based on the dataset, we verified that p62 was a target gene of SETD8 and chromatin immunoprecipitation-PCR assay identified that silence of SETD8 distinctly decreases the H4K20me1 enrichment in the promoter of p62. Moreover, silencing of p62 partly reverses the SETD8 inhibition-mediated pro-inflammatory effect in vitro. Finally, SETD8 pharmacological inhibitor (UNC0379) aggravated the disease progression in dextran sodium sulfate-induced murine colitis. CONCLUSION Our findings elucidate an epigenetic mechanism by which SETD8 regulates the p62 expression and restrains the inflammatory response in colitis. Our result suggests that targeting SETD8 may be a promising therapy for IBD.
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Affiliation(s)
- Ping Chen
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Hua Zhu
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Yujuan Mao
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Mingxing Zhuo
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Yali Yu
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Min Chen
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
| | - Lianyun Li
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Min Wu
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Mei Ye
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China.,Hubei Clinical Centre & Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, China
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25
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Lv Q, Xing Y, Liu J, Dong D, Liu Y, Qiao H, Zhang Y, Hu L. Lonicerin targets EZH2 to alleviate ulcerative colitis by autophagy-mediated NLRP3 inflammasome inactivation. Acta Pharm Sin B 2021; 11:2880-2899. [PMID: 34589402 PMCID: PMC8463273 DOI: 10.1016/j.apsb.2021.03.011] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/08/2021] [Accepted: 02/10/2021] [Indexed: 02/07/2023] Open
Abstract
Aberrant activation of NLRP3 inflammasome in colonic macrophages strongly associates with the occurrence and progression of ulcerative colitis. Although targeting NLRP3 inflammasome has been considered to be a potential therapy, the underlying mechanism through which pathway the intestinal inflammation is modulated remains controversial. By focusing on the flavonoid lonicerin, one of the most abundant constituents existed in a long historical anti-inflammatory and anti-infectious herb Lonicera japonica Thunb., here we report its therapeutic effect on intestinal inflammation by binding directly to enhancer of zeste homolog 2 (EZH2) histone methyltransferase. EZH2-mediated modification of H3K27me3 promotes the expression of autophagy-related protein 5, which in turn leads to enhanced autophagy and accelerates autolysosome-mediated NLRP3 degradation. Mutations of EZH2 residues (His129 and Arg685) indicated by the dynamic simulation study have found to greatly diminish the protective effect of lonicerin. More importantly, in vivo studies verify that lonicerin dose-dependently disrupts the NLRP3–ASC–pro-caspase-1 complex assembly and alleviates colitis, which is compromised by administration of EZH2 overexpression plasmid. Thus, these findings together put forth the stage for further considering lonicerin as an anti-inflammatory epigenetic agent and suggesting EZH2/ATG5/NLRP3 axis may serve as a novel strategy to prevent ulcerative colitis as well as other inflammatory diseases.
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Key Words
- 3-MC, 3-methylcholanthrene
- 5-ASA, 5-aminosalicylic acid
- AIM2, absent in melanoma 2
- ATG5, autophagy-related protein 5
- ATG7, autophagy-related protein 7
- ATP, adenosine triphosphate
- Autophagy
- BMDMs, bone marrow-derived macrophages
- CETSA, cellular thermal shift assay
- CHX, cycloheximide
- ChIP, chromatin immunoprecipitation
- Colitis
- DAI, disease activity index
- DAMPs, damage-associated molecular patterns
- DMSO, dimethyl sulfoxide
- DSS, dextran sulfate sodium
- DTT, dithiothreitol
- ECL, enhanced chemiluminescent
- EDTA, ethylenediaminetetraacetic acid
- ELISA, enzyme-linked immunosorbent assay
- EZH2
- EZH2, enhancer of zeste homolog 2
- FBS, fetal bovine serum
- H&E, hematoxylin and eosin
- LPS, lipopolysaccharide
- Lonicerin
- M-CSF, macrophage colony stimulating factor
- MDP, muramyldipeptide
- MPO, myeloperoxidase
- MSU, monosodium urate crystals
- NLRP3 inflammasome
- NLRP3, nucleotide-binding domain-like receptors family pyrin domain containing 3
- PAMPs, pathogen-associated molecular patterns
- PMA, phorbol myristate acetate
- PMSF, phenylmethanesulfonyl fluoride
- PRC2, polycomb repressive complex 2
- RMSD, root mean-square deviation
- RMSF, root mean-square fluctuation
- SIP, solvent-induced protein precipitation
- TEM, transmission electron microscopy
- UC, ulcerative colitis
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26
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Tan G, Huang C, Chen J, Chen B, Zhi F. Gasdermin-E-mediated pyroptosis participates in the pathogenesis of Crohn's disease by promoting intestinal inflammation. Cell Rep 2021; 35:109265. [PMID: 34133932 DOI: 10.1016/j.celrep.2021.109265] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/01/2020] [Accepted: 05/26/2021] [Indexed: 11/23/2022] Open
Abstract
Crohn's disease (CD) is a kind of refractory intestinal inflammatory diseases. Pyroptosis was recently identified as a gasdermin-mediated proinflammatory cell death. However, it is unclear whether gasdermin-mediated pyroptosis participates in the pathogenesis of CD. Here, we show that the pyroptosis-inducing fragment GSDME N-terminal is obviously detected in the inflamed colonic mucosa but not in the uninflamed mucosa of patients with CD, suggesting that GSDME-mediated pyroptosis may be correlated with intestinal mucosal inflammation in CD. To investigate the role of GSDME in colitis development, Gsdme-/- mice and wild-type (WT) littermate controls were treated with 2,4,6-trinitrobenzenesulfonic acid (TNBS) to induce colitis. We found that Gsdme-/- mice exhibit less-severe intestinal inflammation than WT controls do. Furthermore, our results indicate that GSDME-mediated epithelial-cell pyroptosis induces intestinal inflammation through the release of proinflammatory intracellular contents. In summary, we show that GSDME participates in the pathogenesis of CD through GSDME-mediated pyroptosis to release proinflammatory cytokines.
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Affiliation(s)
- Gao Tan
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Chongyang Huang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jiaye Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Bingxia Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Fachao Zhi
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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27
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Exploring the Crosstalk between Inflammation and Epithelial-Mesenchymal Transition in Cancer. Mediators Inflamm 2021; 2021:9918379. [PMID: 34220337 PMCID: PMC8219436 DOI: 10.1155/2021/9918379] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/31/2021] [Indexed: 02/07/2023] Open
Abstract
Tumor cells undergo invasion and metastasis through epithelial-to-mesenchymal cell transition (EMT) by activation of alterations in extracellular matrix (ECM) protein-encoding genes, enzymes responsible for the breakdown of ECM, and activation of genes that drive the transformation of the epithelial cell to the mesenchymal type. Inflammatory cytokines such as TGFβ, TNFα, IL-1, IL-6, and IL-8 activate transcription factors such as Smads, NF-κB, STAT3, Snail, Twist, and Zeb that drive EMT. EMT drives primary tumors to metastasize in different parts of the body. T and B cells, dendritic cells (DCs), and tumor-associated macrophages (TAMs) which are present in the tumor microenvironment induce EMT. The current review elucidates the interaction between EMT tumor cells and immune cells under the microenvironment. Such complex interactions provide a better understanding of tumor angiogenesis and metastasis and in defining the aggressiveness of the primary tumors. Anti-inflammatory molecules in this context may open new therapeutic options for the better treatment of tumor progression. Targeting EMT and the related mechanisms by utilizing natural compounds may be an important and safe therapeutic alternative in the treatment of tumor growth.
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Zhou J, Yang Y, Wang YL, Zhao Y, Ye WJ, Deng SY, Lang JY, Lu S. Enhancer of zeste homolog 2 contributes to apoptosis by inactivating janus kinase 2/ signal transducer and activator of transcription signaling in inflammatory bowel disease. World J Gastroenterol 2021; 27:3073-3084. [PMID: 34168409 PMCID: PMC8192283 DOI: 10.3748/wjg.v27.i22.3073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/09/2021] [Accepted: 04/28/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is a prevalent worldwide health problem featured by relapsing, chronic gastrointestinal inflammation. Enhancer of zeste homolog 2 (EZH2) is a critical epigenetic regulator in different pathological models, such as cancer and inflammation. However, the role of EZH2 in the IBD development is still obscure.
AIM To explore the effect of EZH2 on IBD progression and the underlying mechanism.
METHODS The IBD mouse model was conducted by adding dextran sodium sulfate (DSS), and the effect of EZH2 on DSS-induced colitis was assessed in the model. The function of EZH2 in regulating apoptosis and permeability was evaluated by Annexin V-FITC Apoptosis Detection Kit, transepithelial electrical resistance analysis, and Western blot analysis of related markers, including Zona occludens 1, claudin-5, and occludin, in NCM460 and fetal human colon (FHC) cells. The mechanical investigation was performed by quantitative reverse transcription-polymerase chain reaction, Western blot analysis, and chromatin immunoprecipitation assays.
RESULTS The colon length was inhibited in the DSS-treated mice and was enhanced by the EZH2 depletion in the system. DSS treatment caused a decreased histological score in the mice, which was reversed by EZH2 depletion. The inflammatory cytokines, such as tumor necrosis factor-α, interleukin-6, and interleukin-1β, were induced in the DSS-treated mice, in which the depletion of EZH2 could reverse this effect. Moreover, the tumor necrosis factor-α treatment induced the apoptosis of NCM460 and FHC cells, in which EZH2 depletion could reverse this effect in the cells. Moreover, the depletion of EZH2 attenuated permeability of colonic epithelial cells. Mechanically, the depletion of EZH2 or EZH2 inhibitor GSK343 was able to enhance the expression and the phosphorylation of janus kinase 2 (JK2) and signal transducer and activator of transcription in the NCM460 and FHC cells. Specifically, EZH2 inactivated JAK2 expression by regulating histone H3K27me3. JAK2 inhibitor TG101348 was able to reverse EZH2 knockdown-mediated colonic epithelial cell permeability and apoptosis.
CONCLUSION Thus, we concluded that EZH2 contributed to apoptosis and inflammatory response by inactivating JAK2/ signal transducer and activator of transcription signaling in IBD. EZH2 may be applied as a potential target for IBD therapy.
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Affiliation(s)
- Jie Zhou
- Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan Province, China
| | - Yang Yang
- Department of Oncology, The Third People's Hospital of Chengdu, Chengdu 255415, Sichuan Province, China
| | - Yi-Ling Wang
- Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan Province, China
| | - Yue Zhao
- Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan Province, China
| | - Wen-Jing Ye
- Department of School of Medicine, University of Electronic Science and Technology of China, Chengdu 397992, Sichuan Province, China
| | - Si-Yao Deng
- Department of School of Medicine, University of Electronic Science and Technology of China, Chengdu 397992, Sichuan Province, China
| | - Jin-Yi Lang
- Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan Province, China
- Department of Radiological Protection, Radiation Oncology Key Laboratory of Sichuan Province, Chengdu 229717, Sichuan Province, China
| | - Shun Lu
- Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan Province, China
- Department of Radiological Protection, Radiation Oncology Key Laboratory of Sichuan Province, Chengdu 229717, Sichuan Province, China
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Wei X, Zhang Y, Xie L, Wang K, Wang X. Pharmacological inhibition of EZH2 by GSK126 decreases atherosclerosis by modulating foam cell formation and monocyte adhesion in apolipoprotein E-deficient mice. Exp Ther Med 2021; 22:841. [PMID: 34149887 PMCID: PMC8210282 DOI: 10.3892/etm.2021.10273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 12/01/2020] [Indexed: 12/31/2022] Open
Abstract
Histone modifications play an important role in the occurrence and development of atherosclerosis in human and atherosclerosis-prone mice. Histone methylation in macrophages, monocytes and endothelial cells markedly influence the progression of atherosclerosis. However, it remains unclear whether treatment with a histone methyltransferase enhancer of zeste homolog 2 (EZH2) inhibitor may suppress atherosclerosis. The present study aimed to determine the effects of the EZH2 inhibitor, GSK126, on the suppression and regression of atherosclerosis in apolipoprotein E-deficient mouse models. In vitro, it was found that pharmacological inhibition of EZH2 by GSK126 markedly reduced lipid transportation and monocyte adhesion during atherogenesis, predominantly through increasing the expression levels of ATP-binding cassette transporter A1 and suppressing vascular cell adhesion molecule 1 in human THP-1 cells. In vivo, it was found that atherosclerotic plaques in GSK126-treated mice were significantly decreased when comparing with the vehicle-treated animals. These results indicated that the GSK126 has the ability to attenuate the progression of atherosclerosis by reducing macrophage foam cell formation and monocyte adhesion in cell and mouse models. In conclusion, the present study provided new insights into the molecular mechanism behind the action of GSK126 and suggested its therapeutic potential for the treatment of atherosclerosis.
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Affiliation(s)
- Xianjing Wei
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116023, P.R. China
| | - Ying Zhang
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116023, P.R. China
| | - Lianna Xie
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116023, P.R. China
| | - Kaijun Wang
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116023, P.R. China
| | - Xiaoqing Wang
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116023, P.R. China
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Wang L, He Y, Ning W. Role of enhancer of zeste homolog 2 in osteoclast formation and periodontitis development by downregulating microRNA-101-regulated VCAM-1. J Tissue Eng Regen Med 2021; 15:534-545. [PMID: 33686766 DOI: 10.1002/term.3187] [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: 06/29/2020] [Accepted: 02/03/2021] [Indexed: 02/06/2023]
Abstract
The enhancer of zeste homolog 2 (EZH2) represents a potential target for periodontitis treatment; however, its role in the development of periodontitis remains unclear. The current study aimed to elucidate the role of EZH2 in osteoclasts (OCs) growth as well as the mechanism underpinning the related process. The potential interaction among EZH2, microRNA-101 (miR-101), and vascular cell adhesion molecule 1 (VCAM-1) was evaluated using chromatin immunoprecipitation and dual-luciferase reporter gene assay. The expressions of EZH2 and miR-101 in OCs were examined by Western blot analysis and reverse transcription squantitative polymerase chain reaction. Loss- and gain-function assays were then performed to determine the role of EZH2/miR-101/VCAM-1 in periodontitis and OCs proliferation, followed by OC growth and proliferation detected using tartrate resistant acid phosphatase (TRAP) and 5-ethynyl-2'-deoxyuridine staining. Enzyme-linked immunoassay was conducted to determine the expression of interleukin 1β (IL-1β) and tumor necrosis factor-α (TNF-α). A periodontitis rat model was established to investigate the effect of EZH2 and VCAM-1 in vivo. EZH2 was overexpressed, while miR-101 was downregulated in the OCs of periodontitis. Silencing of EZH2, VCAM-1 repression, or miR-101 elevation suppressed the growth and proliferation of OC while acting to encumber the release of IL-1β and TNF-α. EZH2 negatively targeted miR-101, while miR-101 negatively targeted VCAM-1. Moreover, silencing of EZH2 or VCAM-1 was observed to attenuate periodontitis which was evidenced by an increase in BMD, BV/TV, and BS/BV as well as reduction in TRAP and cathepsin K in vivo. Taken together, the key findings of the current study demonstrate that EZH2 knockdown inhibited OC formation by elevating the expression of miR-101 via suppression of VCAM-1, ultimately attenuating periodontitis.
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Affiliation(s)
- Li Wang
- Department of Periodontology, The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin, China
| | - Yanyan He
- Department of Stomatology, The First Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Wanchen Ning
- Department of Preventive Dentistry and Periodontology, Ludwig-Maximilians University of Munich, Munich, Germany
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Yue D, Wang Z, Yang Y, Hu Z, Luo G, Wang F. EZH2 inhibitor GSK343 inhibits sepsis-induced intestinal disorders. Exp Ther Med 2021; 21:437. [PMID: 33747174 PMCID: PMC7967880 DOI: 10.3892/etm.2021.9854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/04/2020] [Indexed: 12/29/2022] Open
Abstract
Enhancer of zeste homolog 2 (EZH2) is positively associated with poor clinical outcomes in a number of aggressive tumors. Recent studies have demonstrated that inhibition of EZH2 also suppressed the inflammatory response during sepsis. The present study aimed to investigate whether an inhibitor of EZH2, GSK343, could protect the intestine against sepsis-induced injury in vivo. Mice underwent cecal ligation and perforation (CLP) to induce sepsis and were assigned into three groups: Sham, CLP and CLP + GSK343. For GSK343 treatment, the septic mice were intravenously injected with GSK343 at 6 h post-CLP. The results indicated that EZH2 was highly expressed while tight junction (TJ) proteins ZO-1, occludin and claudin-1 expression was reduced in the intestinal tissue of mice subjected to CLP compared with the sham group. CLP operation also caused intestinal pathological injury and the production of inflammatory cytokines including TNF-α, IL-1β and IL-6 in both serum and intestinal tissues. Meanwhile, CLP induced cell apoptosis of intestinal tissue based on the increased number of apoptotic cells, reduced expression of Bcl-2 and higher expression of caspase-3 and Bax. However, the presence of GSK343 partially rescued intestinal pathological injury, reduced the level of inflammatory cytokines, repressed cell apoptosis and promoted TJ protein expression. Finally, the decreased number of Paneth cells caused by CLP operation was reversed by GSK343 treatment. In conclusion, the results of the present study demonstrated that GSK343 could protect the intestine against sepsis-induced injury in vivo. Inhibition of EZH2 may provide a therapeutic approach for intestinal dysfunction during sepsis.
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Affiliation(s)
- Dongyou Yue
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Zhiying Wang
- Department of Neurology, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Yongan Yang
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Zhenjun Hu
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Ganping Luo
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Fu Wang
- Department of Critical Care Medicine, Zhangye Second People's Hospital, Zhangye, Gansu 734000, P.R. China
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Fernández-Ponce C, Navarro Quiroz R, Díaz Perez A, Aroca Martinez G, Cadena Bonfanti A, Acosta Hoyos A, Gómez Escorcia L, Hernández Agudelo S, Orozco Sánchez C, Villarreal Camacho J, Atencio Ibarra L, Consuegra Machado J, Espinoza Garavito A, García-Cózar F, Navarro Quiroz E. MicroRNAs overexpressed in Crohn's disease and their interactions with mechanisms of epigenetic regulation explain novel aspects of Crohn's disease pathogenesis. Clin Epigenetics 2021; 13:39. [PMID: 33602320 PMCID: PMC7890887 DOI: 10.1186/s13148-021-01022-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/02/2021] [Indexed: 12/14/2022] Open
Abstract
Background In this review, we were interested to identify the wide universe of enzymes associated with epigenetic modifications, whose gene expression is regulated by miRNAs with a high relative abundance in Crohn's disease (CD) affected tissues, with the aim to determine their impact in the pathogenesis and evolution of the disease. Methods We used HMDD and Bibliometrix R-package in order to identify the miRNAs overexpressed in CD. The identified enzymes associated with epigenetic mechanisms and post-translational modifications, regulated by miRNAs upregulated in CD, were analyzed using String v11 database. Results We found 190 miRNAs with great abundance in patients with CD, of which 26 miRNAs regulate the gene expression of enzymes known to catalyze epigenetic modifications involved in essentials pathophysiological processes, such as chromatin architecture reorganization, immune response regulation including CD4+ T cells polarization, integrity of gut mucosa, gut microbiota composition and tumorigenesis. Conclusion The integrated analysis of miRNAs with a high relative abundance in patients with CD showed a combined and superimposed gene expression regulation of enzymes associated with relevant epigenetic mechanisms and that could explain, in part, the pathogenesis of CD. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01022-8.
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Affiliation(s)
- Cecilia Fernández-Ponce
- Department of Biomedicine, Biotechnology and Public Health, University of Cadiz, Cadiz, Spain
| | - Roberto Navarro Quiroz
- CMCC-Centro de Matemática, Computação E Cognição, Laboratório do Biología Computacional e Bioinformática-LBCB, Universidade Federal Do ABC, Sao Paulo, 01023, Brazil
| | - Anderson Díaz Perez
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia.,Universidad Rafael Nuñez, 130001, Cartagena, Colombia
| | - Gustavo Aroca Martinez
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia.,Department of Nephrology, Clinica de La Costa, 080001, Barranquilla, Colombia
| | - Andrés Cadena Bonfanti
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia.,Department of Nephrology, Clinica de La Costa, 080001, Barranquilla, Colombia
| | - Antonio Acosta Hoyos
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia
| | - Lorena Gómez Escorcia
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia.,Universidad Rafael Nuñez, 130001, Cartagena, Colombia
| | - Sandra Hernández Agudelo
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia.,Department of Nephrology, Clinica de La Costa, 080001, Barranquilla, Colombia
| | - Christian Orozco Sánchez
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia
| | | | | | | | - Alberto Espinoza Garavito
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia
| | - Francisco García-Cózar
- Department of Biomedicine, Biotechnology and Public Health, University of Cadiz, Cadiz, Spain
| | - Elkin Navarro Quiroz
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simon Bolivar, 080001, Barranquilla, Colombia. .,Centro de Investigación E Innovación en Biomoléculas, C4U S.A.S, 080001, Barranquilla, Colombia.
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Danggui Buxue Decoction Ameliorates Inflammatory Bowel Disease by Improving Inflammation and Rebuilding Intestinal Mucosal Barrier. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:8853141. [PMID: 33531923 PMCID: PMC7837767 DOI: 10.1155/2021/8853141] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/30/2020] [Accepted: 01/08/2021] [Indexed: 12/19/2022]
Abstract
Objective This study aimed to determine whether Danggui Buxue decoction (DGBX) can improve inflammatory bowel disease (IBD) by regulating immunity and promoting intestinal mucosal repair. Method Dextran sulfate sodium (DSS) was used to induce the IBD model. Drugs (DGBX or saline) were administered to mice, which were randomly divided into three groups (control, model, and experimental groups). Hematoxylin and eosin staining of intestinal tissues was conducted to observe for morphological changes. Changes in cytokines and immune cells in the intestinal tissues were detected by enzyme-linked immunosorbent assay and flow cytometry. Immunofluorescence techniques were used to assess the status of the intestinal mucosal repair. Results This study found that treatment with DGBX can effectively improve the inflammatory state and pathological structure of the IBD model. DGBX not only can significantly change the composition of intestinal mucosal immune cells and promote the regression of inflammation but also significantly increase the proliferation of intestinal epithelial cells and promote the rapid repair of intestinal mucosal barrier injury compared with the model group (p < 0.05). Conclusion Taking these results, DGBX shows promising protective effects on IBD by regulating immunity and promoting intestinal mucosal repair.
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Chen L, Li J, Ye Z, Sun B, Wang L, Chen Y, Han J, Yu M, Wang Y, Zhou Q, Seidler U, Tian D, Xiao F. Anti-High Mobility Group Box 1 Neutralizing-Antibody Ameliorates Dextran Sodium Sulfate Colitis in Mice. Front Immunol 2020; 11:585094. [PMID: 33193406 PMCID: PMC7661783 DOI: 10.3389/fimmu.2020.585094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 10/12/2020] [Indexed: 12/16/2022] Open
Abstract
High mobility group box 1 (HMGB1) is a ubiquitous nuclear protein in mammals. When released into the extracellular space, it acts as a damage-associated molecular pattern. This study investigates whether increased HMGB1 levels are found in the intestinal mucosa of ulcerative colitis (UC) patients, and whether an anti-HMGB1 neutralizing-antibody (HnAb) can inhibit the intestinal inflammation elicited by dextran sulfate sodium (DSS) in mice. Because toll-like receptor 4 (TLR4) is implicated in HMGB1-mediated immune cell activation, DSS colitis was also elicited in TLR4-deficient mice in the presence and absence of HnAb. The expression of HMGB1 in UC patients was examined. HnAb was administered via intraperitoneal injection to TLR4 deficient mice and their wild-type littermates, both being induced to colitis with DSS. Finally, the protective effect of HnAb and TLR4 deficiency were evaluated. In UC patients, HMGB1 was up-regulated in the inflamed colon. When administered during DSS application, HnAb alleviated the severity of colitis with a lower disease activity index, limited histological damages, and reduced production of proinflammatory cytokines. This antibody also limited colonic barrier loss, decreased colonic lamina propria macrophages and partially reversed the DSS treatment-associated dysbiosis. The protective effect of this antibody was enhanced in TLR4-deficient mice in some aspects, indicating that both additional HMGB1-mediated as well as TLR4-mediated inflammatory signaling pathways were involved in the induction of colitis by DSS. HnAb ameliorated colitis via macrophages inhibition and colonic barrier protection. It may therefore be a novel treatment option in colitis.
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Affiliation(s)
- Liping Chen
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junhua Li
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhenghao Ye
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Binghua Sun
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lu Wang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education, Wuhan, China.,Key Laboratory of Organ Transplantation, National Health Commission, Wuhan, China.,Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Yu Chen
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Han
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meiping Yu
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Wang
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Zhou
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ursula Seidler
- Department of Gastroenterology, Hannover Medical School, Hannover, Germany
| | - De'an Tian
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fang Xiao
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chen M, Zhu H, Mao YJ, Cao N, Yu YL, Li LY, Zhao Q, Wu M, Ye M. Regulation of IL12B Expression in Human Macrophages by TALEN-mediated Epigenome Editing. Curr Med Sci 2020; 40:900-909. [PMID: 33123904 DOI: 10.1007/s11596-020-2249-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 06/22/2020] [Indexed: 10/23/2022]
Abstract
Although the exact etiology of inflammatory bowel disease (IBD) remains unclear, exaggerated immune response in genetically predisposed individuals has been reported. Th1 and Th17 cells mediate IBD development. Macrophages produce IL-12 and IL-23 that share p40 subunit encoded by IL12B gene as heteromer partner to drive Th1 and Th17 differentiation. The available animal and human data strongly support the pathogenic role of IL-12/IL-23 in IBD development and suggest that blocking p40 might be the potential strategy for IBD treatment. Furthermore, aberrant alteration of some cytokines expression via epigenetic mechanisms is involved in pathogenesis of IBD. In this study, we analyzed core promoter region of IL12B gene and investigated whether IL12B expression could be regulated through targeted epigenetic modification with gene editing technology. Transcription activator-like effectors (TALEs) are widely used in the field of genome editing and can specifically target DNA sequence in the host genome. We synthesized the TALE DNA-binding domains that target the promoter of human IL12B gene and fused it with the functional catalytic domains of epigenetic enzymes. Transient expression of these engineered enzymes demonstrated that the TALE-DNMT3A targeted the selected IL12B promoter region, induced loci-specific DNA methylation, and down-regulated IL-12B expression in various human cell lines. Collectively, our data suggested that epigenetic editing of IL12B through methylating DNA on its promoter might be developed as a potential therapeutic strategy for IBD treatment.
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Affiliation(s)
- Meng Chen
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Hua Zhu
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Yu-Juan Mao
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Nan Cao
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Ya-Li Yu
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Lian-Yun Li
- College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, 430071, China.,Hubei Clinical Center and Key Lab of Intestinal and Colorectal Diseases, Wuhan, 430071, China
| | - Min Wu
- College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Mei Ye
- College of Life Sciences, Wuhan University, Wuhan, 430072, China.
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36
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Eckol protects against acute experimental colitis in mice: Possible involvement of Reg3g. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Epigenome-metabolome-microbiome axis in health and IBD. Curr Opin Microbiol 2020; 56:97-108. [PMID: 32920333 DOI: 10.1016/j.mib.2020.08.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 12/13/2022]
Abstract
Environmental triggers in the context of genetic susceptibility drive phenotypes of complex immune disorders such as Inflammatory bowel disease (IBD). One such trigger of IBD is perturbations in enteric commensal bacteria, fungi or viruses that shape both immune and neuronal state. The epigenome acts as an interface between microbiota and context-specific gene expression and is thus emerging as a third key contributor to IBD. Here we review evidence that the host epigenome plays a significant role in orchestrating the bidirectional crosstalk between mammals and their commensal microorganisms. We discuss disruption of chromatin regulatory regions and epigenetic enzyme mutants as a causative factor in IBD patients and mouse models of intestinal inflammation and consider the possible translation of this knowledge. Furthermore, we present emerging insights into the intricate connection between the microbiome and epigenetic enzyme activity via host or bacterial metabolites and how these interactions fine-tune the microorganism-host relationship.
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Chu KJ, Ma YS, Jiang XH, Wu TM, Wu ZJ, Li ZZ, Wang JH, Gao QX, Yi B, Shi Y, Wang HM, Gu LP, Zhang SQ, Wang GR, Liu JB, Fu D, Jiang XQ. Whole-Transcriptome Sequencing Identifies Key Differentially Expressed mRNAs, miRNAs, lncRNAs, and circRNAs Associated with CHOL. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:592-603. [PMID: 32721879 PMCID: PMC7390861 DOI: 10.1016/j.omtn.2020.06.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022]
Abstract
To systematically evaluate the whole-transcriptome sequencing data of cholangiocarcinoma (CHOL) to gain more insights into the transcriptomic landscape and molecular mechanism of this cancer, we performed whole-transcriptome sequencing based on the tumorous (C) and their corresponding non-tumorous adjacent to the tumors (CP) from eight CHOL patients. Subsequently, differential expression analysis was performed on the C and CP groups, followed by functional interaction prediction analysis to investigate gene-regulatory circuits in CHOL. In addition, The Cancer Genome Atlas (TCGA) for CHOL data was used to validate the results. In total, 2,895 differentially expressed messenger RNAs (dif-mRNAs), 56 differentially expressed microRNAs (dif-miRNAs), 151 differentially expressed long non-coding RNAs (dif-lncRNAs), and 110 differentially expressed circular RNAs (dif-circRNAs) were found in CHOL samples compared with controls. Enrichment analysis on those differentially expressed genes (DEGs) related to miRNA, lncRNA, and circRNA also identified the function of spliceosome. The downregulated hsa-miR-144-3p were significantly enriched in the competing endogenous RNA (ceRNA) complex network, which also included 7 upregulated and 13 downregulated circRNAs, 7 upregulated lncRNAs, and 90 upregulated and 40 downregulated mRNAs. Moreover, most of the DEGs and a few of the miRNAs (such as hsa-miR-144-3p) were successfully validated by TCGA data. The genes involved in RNA splicing and protein degradation processes and miR-144-3p may play fundamental roles in the pathogenesis of CHOL.
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Affiliation(s)
- Kai-Jian Chu
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China
| | - Yu-Shui Ma
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China; Department of Radiology, The Fourth Affiliated Hospital of Anhui Medical University, Hefei 230012, China; Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xiao-Hui Jiang
- General Surgery, Nantong Tumor Hospital, Nantong 226631, China
| | - Ting-Miao Wu
- Department of Radiology, The Fourth Affiliated Hospital of Anhui Medical University, Hefei 230012, China
| | - Zhi-Jun Wu
- Department of Oncology, Nantong Second People's Hospital, Nantong 226002, China
| | - Zhi-Zhen Li
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China
| | - Jing-Han Wang
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China
| | - Qing-Xiang Gao
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China
| | - Bin Yi
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China
| | - Yi Shi
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China
| | - Hui-Min Wang
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China
| | - Li-Peng Gu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Su-Qing Zhang
- Department of Hepatobiliary Surgery, Nantong Tumor Hospital, Nantong 226631, China
| | - Gao-Ren Wang
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China
| | - Ji-Bin Liu
- Cancer Institute, Nantong Tumor Hospital, Nantong 226631, China.
| | - Da Fu
- Department of Radiology, The Fourth Affiliated Hospital of Anhui Medical University, Hefei 230012, China; Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.
| | - Xiao-Qing Jiang
- Department of Biliary Tract Surgery I, Third Affiliated Hospital of Second Military Medical University, Shanghai 200438, China.
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Izawa K, Shirakura K, Kakiuchi K, Funahashi N, Maekawa N, Hino N, Tanaka T, Doi T, Okada Y. PRC2 Components Maintain DNA Hypermethylation of the Upstream Promoter and Regulate Robo4 Expression in Endothelial Cells. Biol Pharm Bull 2020; 43:742-746. [DOI: 10.1248/bpb.b19-01014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kohei Izawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Koji Kakiuchi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Naoki Maekawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Nobumasa Hino
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Toru Tanaka
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Yoshiaki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University
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Zhang J, Xu M, Zhou W, Li D, Zhang H, Chen Y, Ning L, Zhang Y, Li S, Yu M, Chen Y, Zeng H, Cen L, Zhou T, Zhou X, Lu C, Yu C, Li Y, Sun J, Kong X, Shen Z. Deficiency in the anti-apoptotic protein DJ-1 promotes intestinal epithelial cell apoptosis and aggravates inflammatory bowel disease via p53. J Biol Chem 2020; 295:4237-4251. [PMID: 32075910 PMCID: PMC7105307 DOI: 10.1074/jbc.ra119.010143] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 02/11/2020] [Indexed: 12/31/2022] Open
Abstract
Parkinson disease autosomal recessive, early onset 7 (PARK7 or DJ-1) is involved in multiple physiological processes and exerts anti-apoptotic effects on multiple cell types. Increased intestinal epithelial cell (IEC) apoptosis and excessive activation of the p53 signaling pathway is a hallmark of inflammatory bowel disease (IBD), which includes ulcerative colitis (UC) and Crohn's disease (CD). However, whether DJ-1 plays a role in colitis is unclear. To determine whether DJ-1 deficiency is involved in the p53 activation that results in IEC apoptosis in colitis, here we performed immunostaining, real-time PCR, and immunoblotting analyses to assess DJ-1 expression in human UC and CD samples. In the inflamed intestines of individuals with IBD, DJ-1 expression was decreased and negatively correlated with p53 expression. DJ-1 deficiency significantly aggravated colitis, evidenced by increased intestinal inflammation and exacerbated IEC apoptosis. Moreover, DJ-1 directly interacted with p53, and reduced DJ-1 levels increased p53 levels both in vivo and in vitro and were associated with decreased p53 degradation via the lysosomal pathway. We also induced experimental colitis with dextran sulfate sodium in mice and found that compared with DJ-1-/- mice, DJ-1-/-p53-/- mice have reduced apoptosis and inflammation and increased epithelial barrier integrity. Furthermore, pharmacological inhibition of p53 relieved inflammation in the DJ-1-/- mice. In conclusion, reduced DJ-1 expression promotes inflammation and IEC apoptosis via p53 in colitis, suggesting that the modulation of DJ-1 expression may be a potential therapeutic strategy for managing colitis.
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Affiliation(s)
- Jie Zhang
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Min Xu
- Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Weihua Zhou
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Dejian Li
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Hong Zhang
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Yi Chen
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Longgui Ning
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Yuwei Zhang
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Sha Li
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Mengli Yu
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Yishu Chen
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Hang Zeng
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Li Cen
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Tianyu Zhou
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Xinxin Zhou
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Chao Lu
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Chaohui Yu
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Youming Li
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China.
| | - Jing Sun
- Department of Gastroenterology, Rui Jin Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200031, China.
| | - Xiaoni Kong
- Institute of Clinical Immunology, Department of Liver Diseases, ShuGuang Hospital Affiliated to Shanghai University of Chinese Traditional Medicine, Shanghai, China.
| | - Zhe Shen
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China.
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Gut stem cell necroptosis by genome instability triggers bowel inflammation. Nature 2020; 580:386-390. [DOI: 10.1038/s41586-020-2127-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 01/24/2020] [Indexed: 02/06/2023]
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Chen M, Li Q, Cao N, Deng Y, Li L, Zhao Q, Wu M, Ye M. Profiling of histone 3 lysine 27 acetylation reveals its role in a chronic DSS-induced colitis mouse model. Mol Omics 2020; 15:296-307. [PMID: 31147658 DOI: 10.1039/c9mo00070d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory condition of the gastrointestinal tract. In current dogma, pathogenesis of IBD is attributed to the dysregulated mucosal immune response to gut flora in genetically susceptible individuals, but the genetics evidence from GWAS studies so far is insufficient to explain the observed heritability in IBD. For this discordance, epigenetics has emerged to be one of the important causes. Recent studies have reported that histone acetylation is correlated with the development of IBD, whereas its role and underlying molecular mechanism in the disease still remain elusive. Here, we established a dextran sulfate sodium (DSS)-induced chronic colitis model and performed RNA-sequencing (RNA-seq) and Chromatin Immunoprecipitation followed by NGS sequencing (ChIP-seq) for H3K27ac in the mice colon tissues to investigate whether H3K27ac is involved in the development of intestinal inflammation. We found that the global H3K27ac level and distribution in colon tissue had no significant difference after DSS treatment, while H3K27ac signals were significantly enriched in the typical-enhancers of the DSS group compared with the control. By combining with RNA-seq data (fold change >2), we identified 56 candidate genes as potential target genes for H3K27ac change upon DSS treatment. We further predicted transcription factors (TFs) involved in DSS-induced colitis according to the enhancers with increased H3K27ac. H3K27ac increase in special typical-enhancers in the DSS group is possibly related to the development of intestinal inflammation by up-regulating adjacent gene expression and shifting TF networks, which will provide new insight into the pathogenesis and therapy of IBD.
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Affiliation(s)
- Meng Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China.
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Luo F, Zhou Z, Cai J, Du W. DUB3 Facilitates Growth and Inhibits Apoptosis Through Enhancing Expression of EZH2 in Oral Squamous Cell Carcinoma. Onco Targets Ther 2020; 13:1447-1460. [PMID: 32110043 PMCID: PMC7035907 DOI: 10.2147/ott.s230577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 01/15/2020] [Indexed: 12/23/2022] Open
Abstract
Background Here, we probed the action mechanism of ubiquitin-specific processing proteases 17 (DUB3) in the evolution of oral squamous cell carcinoma (OSCC). Methods The expression of genes were calculated by qRT-PCR, and proteins were assessed by Western blot and immunohistochemistry. The cells viability and proliferation were checked by MTT and EdU assay, respectively. Flow cytometry was implemented to detect the cell cycle and apoptosis. The activity of EZH2 gene promoter was measured by luciferase reporter assay. Co-immunoprecipitation assay was used to ensure the ubiquitination of bromodomain-containing protein 4 (BRD4). The cell apoptosis of tumor tissues was assessed by TUNEL assay. Results DUB3 was overexpressed in OSCC tissues and cell lines, and negatively correlated with patient’s survival time. DUB3 downregulation could effectively curb OSCC cells viability and proliferation, promote cell apoptosis and the expression of cleaved-caspase-3, cleaved PARP and p21, while inhibit cyclin D1. Besides, DUB3 production was positivity correlated with enhancer of zeste homolog-2 (EZH2) and BRD4. BRD4 downregulation could repress DUB3-induced EZH2 production, and MG132 reversed DUB3 decreasing-mediated BRD4 downregulation. Downregulation of DUB3 promoted BRD4 ubiquitination. DUB3 promoted OSCC cells proliferation, while suppressing apoptosis via facilitating EZH2 production. At last, in vivo experiment indicated that the downregulation of DUB3 significantly inhibited the growth of xenograft tumor. Conclusion In summary, we found that DUB3 enhanced OSCC cells proliferation and xenograft tumor growth, while inhibited their apoptosis via promoting BRD4-mediated upregulation of EZH2. Our study indicated that DUB3 may be an effective anti-cancer target for OSCC therapy.
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Affiliation(s)
- Fei Luo
- Department of Oncology, First People's Hospital of Jinzhou, Jinzhou 434000, People's Republic of China
| | - Zunyan Zhou
- Department of Oncology, First People's Hospital of Jinzhou, Jinzhou 434000, People's Republic of China
| | - Jun Cai
- Department of Oncology, First People's Hospital of Jinzhou, Jinzhou 434000, People's Republic of China
| | - Wei Du
- Department of Oncology, First People's Hospital of Jinzhou, Jinzhou 434000, People's Republic of China
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陈 颖, 胡 紫, 惠 甜, 刘 鹤. [Enhancer of zeste homolog 2 affects dental pulp inflammation by regulating macrophage chemotaxis]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2020; 52:18-23. [PMID: 32071458 PMCID: PMC7439066 DOI: 10.19723/j.issn.1671-167x.2020.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To investigate the expression changes of the epigenetic regulator enhancer of zeste homolog 2 (EZH2) during pulp inflammation and the effect of EZH2 on macrophages migration. METHODS Rat dental pulp was stimulated with 10 g/L lipopolysaccharide (LPS) to establish a model of rat pulpitis at different stages of inflammation. Immunohistochemical staining was used to detect the expression changes of EZH2 during the progression of pulp inflammation. Immunofluorescence double staining was used to detect the expression of EZH2, CD68 and their colocalization. To screen the appropriate concentration of EZH2 recombinant protein to stimulate hDPCs and human leukaemia-derived monocytic cell line (THP-1) cells, the effects of different concentrations (1, 10, 20, 40, and 100 μg/L) of EZH2 recombinant protein on proliferation of human dental pulp cells (hDPCs) and human monocyte cell line THP-1 were detected by cell counting kit-8 (CCK-8). Transwell migration assay was used to detect the effect of supernatants of hDPCs treated with EZH2 recombinant protein on the migration of THP-1 cells. RESULTS HE staining results showed that in the model of rat pulp inflammation induced by LPS, with the prolongation of LPS stimulation, the inflammation response of pulp gradually increased. Immunohistochemical results showed that EZH2 expression decreased within 8 h of LPS-induced dental pulp inflammation; but after 1, 3, and 7 d of stimulation, EZH2 expression gradually increased with the extension of the stimulation time. As for the normal rat dental pulp tissue, the positive expression of EZH2 was scattered in the odontoblast cell layer and the pulp proper. Compared with the control group, LPS stimulated the expression of EZH2 and CD68 in the infected dental pulp, and the colocalization of EZH2 and CD68 could be detected in macrophages. The results of CCK-8 suggested that the appropriate concentration of EZH2 recombinant protein to stimulate hDPCs and THP-1 cells was 20 μg/L. Transwell cell migration assay confirmed that compared with the supernatant of EZH2 untreated HDPCs group, the supernatant of EZH2treated hDPCs significantly promoted macrophage chemotaxis. CONCLUSION EZH2 is involved in the development of pulpitis and promotes the chemotaxis of macrophages, which suggests that EZH2 may play an important regulatory role in the development of pulp inflammation.
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Affiliation(s)
- 颖怡 陈
- />北京大学口腔医学院·口腔医院,儿童口腔科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 紫琪 胡
- />北京大学口腔医学院·口腔医院,儿童口腔科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 甜倩 惠
- />北京大学口腔医学院·口腔医院,儿童口腔科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - 鹤 刘
- />北京大学口腔医学院·口腔医院,儿童口腔科 国家口腔疾病临床医学研究中心 口腔数字化医疗技术和材料国家工程实验室 口腔数字医学北京市重点实验室,北京 100081Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Lou X, Zhu H, Ning L, Li C, Li S, Du H, Zhou X, Xu G. EZH2 Regulates Intestinal Inflammation and Necroptosis Through the JNK Signaling Pathway in Intestinal Epithelial Cells. Dig Dis Sci 2019; 64:3518-3527. [PMID: 31273598 DOI: 10.1007/s10620-019-05705-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 06/10/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is a common disorder of chronic intestinal inflammation that can be caused by the disruption of intestinal immune homeostasis. AIM We aimed to evaluate the role of enhancer of zeste homolog 2 (EZH2) in the inflammatory response and explore the association between EZH2 and necroptosis in human epithelial colorectal adenocarcinoma cell lines. METHODS In both in vitro and in vivo models, expression of EZH2 in intestinal tissues was verified by histology. The expression of inflammatory cytokines in cell lines treated with EZH2 siRNA with or without stimulus was analyzed by quantitative real-time polymerase chain reaction. An intestinal necroptosis cell model was established to elucidate whether EZH2 is involved in necroptosis. RESULTS Our present data indicated that EZH2 expression was decreased in in vitro and in vivo models and in patients with inflammatory bowel disease. EZH2 downregulation increased the expression of inflammatory factors, including TNF-α, IL-8, IL-17, CCL5, and CCL20 in a Caco-2 cell model. The JNK pathway was activated with the reduction of EZH2. In the necroptosis model, downregulation of EZH2 was detected with the upregulation of necroptotic markers RIP1 and RIP3. In addition, EZH2 knockdown with siRNA increased p-JNK and p-c-Jun. CONCLUSION Our data suggest that EZH2 plays an important role in the development of intestinal inflammation and necroptosis. Hence, EZH2 could be a potential therapeutic target for IBD.
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Affiliation(s)
- Xinhe Lou
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Huatuo Zhu
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Longgui Ning
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Chunxiao Li
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Sha Li
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Haojie Du
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xinxin Zhou
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Guoqiang Xu
- Department of Gastroenterology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China.
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Yang YX, Shen HH, Cao F, Xie LY, Zhu GL, Sam NB, Wang DG, Pan HF. Therapeutic potential of enhancer of zeste homolog 2 in autoimmune diseases. Expert Opin Ther Targets 2019; 23:1015-1030. [PMID: 31747802 DOI: 10.1080/14728222.2019.1696309] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Introduction: Autoimmune diseases (ADs) are idiopathic and heterogeneous disorders with contentious pathophysiology. Great strides have been made in epigenetics and its involvement in ADs. Zeste homolog 2 (EZH2) has sparked extensive interest because of its pleiotropic roles in distinct pathologic contexts.Areas covered: This review summarizes the epigenetic functions and the biological significance of EZH2 in the etiology of rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), type 1 diabetes (T1D), inflammatory bowel disease (IBD), multiple sclerosis (MS), and systemic sclerosis (SSc). A brief recapitulation of the therapeutic potential of EZH2 targeting is provided.Expert opinion: There are questions marks and controversies surrounding the feasibility and safety of EZH2 targeting; it is recommended in RA and SLE, but queried in T1D, IBD, MS, and SSc. Future work should focus on contrast studies, systematic analyses and preclinical studies with optimizing methodologies. Selective research studies conducted in a stage-dependent manner are necessary because of the relapsing-remitting clinical paradigms.
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Affiliation(s)
- Yue-Xin Yang
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Hui-Hui Shen
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, Hefei, Anhui, China
| | - Fan Cao
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, Hefei, Anhui, China
| | - Liang-Yu Xie
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, Hefei, Anhui, China
| | - Guang-Lin Zhu
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, Hefei, Anhui, China
| | - Napoleon Bellua Sam
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, China
| | - De-Guang Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, China
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Zong D, Liu X, Li J, Ouyang R, Chen P. The role of cigarette smoke-induced epigenetic alterations in inflammation. Epigenetics Chromatin 2019; 12:65. [PMID: 31711545 PMCID: PMC6844059 DOI: 10.1186/s13072-019-0311-8] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
Background Exposure to cigarette smoke (CS) is a major threat to human health worldwide. It is well established that smoking increases the risk of respiratory diseases, cardiovascular diseases and different forms of cancer, including lung, liver, and colon. CS-triggered inflammation is considered to play a central role in various pathologies by a mechanism that stimulates the release of pro-inflammatory cytokines. During this process, epigenetic alterations are known to play important roles in the specificity and duration of gene transcription. Main text Epigenetic alterations include three major modifications: DNA modifications via methylation; various posttranslational modifications of histones, namely, methylation, acetylation, phosphorylation, and ubiquitination; and non-coding RNA sequences. These modifications work in concert to regulate gene transcription in a heritable fashion. The enzymes that regulate these epigenetic modifications can be activated by smoking, which further mediates the expression of multiple inflammatory genes. In this review, we summarize the current knowledge on the epigenetic alterations triggered by CS and assess how such alterations may affect smoking-mediated inflammatory responses. Conclusion The recognition of the molecular mechanisms of the epigenetic changes in abnormal inflammation is expected to contribute to the understanding of the pathophysiology of CS-related diseases such that novel epigenetic therapies may be identified in the near future.
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Affiliation(s)
- Dandan Zong
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Xiangming Liu
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Jinhua Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ruoyun Ouyang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.
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Miao Y, Lv Q, Qiao S, Yang L, Tao Y, Yan W, Wang P, Cao N, Dai Y, Wei Z. Alpinetin improves intestinal barrier homeostasis via regulating AhR/suv39h1/TSC2/mTORC1/autophagy pathway. Toxicol Appl Pharmacol 2019; 384:114772. [PMID: 31676321 DOI: 10.1016/j.taap.2019.114772] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/27/2019] [Accepted: 10/01/2019] [Indexed: 02/08/2023]
Abstract
The injury of intestinal epithelial barrier is considered as the key pathophysiological process in response to gastrointestinal infection and inflammation, and plays an important role in the initiation and development of colitis. Alpinetin has been shown to improve intestinal barrier homeostasis under colitis condition, but the mechanism is still unclear. Here, we showed that alpinetin significantly improved transepithelial electrical resistance (TEER) in TNF-α-stimulated Caco-2 cells, which was mainly mediated by inhibiting the apoptosis. Mechanistic studies demonstrated that alpinetin markedly increased the production of autophagosomes, along with obvious regulation of LC3B-II, beclin-1, p62, Atg7 and Atg5 expressions. In addition, it also markedly repressed the activation of mTORC1 signaling pathway, which was ascribed to TSC2 rather than p-AKT, p-ERK, p-AMPKα or PTEN expressions in Caco-2 and NCM460 cells. Furthermore, the enrichment of H3K9me3 at TSC2 promoter region was decreased and ubiquitin proteasome degradation of suv39h1 was increased. Additionally, alpinetin activated aryl hydrocarbon receptor (AhR) and promoted co-localization of AhR with suv39h1 in the cytoplasm. The relationship between alpinetin-regulated AhR/suv39h1/TSC2/mTORC1 signals, autophagy and apoptosis of Caco-2 and NCM460 cells was confirmed by using CH223191, siAhR, siTSC2 and chloroquine. Finally, CH223191 and leucine abolished alpinetin-mediated inhibition of intestinal epithelial cells apoptosis, improvement of intestinal epithelial barrier and amelioration of colitis.
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Affiliation(s)
- Yumeng Miao
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Qi Lv
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Simiao Qiao
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Ling Yang
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Yu Tao
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Wenxin Yan
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Pengfei Wang
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Na Cao
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China
| | - Yue Dai
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China.
| | - Zhifeng Wei
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, China.
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49
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Jiang C, Guo Q, Jin Y, Xu JJ, Sun ZM, Zhu DC, Lin JH, Tian NF, Sun LJ, Zhang XL, Wu YS. Inhibition of EZH2 ameliorates cartilage endplate degeneration and attenuates the progression of intervertebral disc degeneration via demethylation of Sox-9. EBioMedicine 2019; 48:619-629. [PMID: 31631036 PMCID: PMC6838408 DOI: 10.1016/j.ebiom.2019.10.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 09/23/2019] [Accepted: 10/03/2019] [Indexed: 12/11/2022] Open
Abstract
Background Cartilaginous endplate (CEP) degeneration is considered as one of the major causes of intervertebral disc degeneration (IVDD) which causes low back pain. Recent studies have proved that epigenetic alteration is involved in a variety of diseases. This work explored the role of histone methyltransferase enhancer of zeste homologue 2 (EZH2) in CEP degeneration, as well as its underlying epigenetic mechanisms, and confirmed the effect of EZH2 knockdown on delaying IVDD development. Methods Western blotting, immunofluorescence staining, and ChIP assay were applied to demonstrate the molecular mechanism of EZH2 in CEP tissue. The therapeutic potential of EZH2 was investigated using puncture-induced rat models. Findings The EZH2 expression was upregulated in human and rat CEP tissue. It was also found that the overexpression of EZH2 suppressed the expression of Collagen II, aggrecan and Sox-9, and promoted the expression of ADTAMTS5 and MMP13 in rat endplate chondrocytes (EPCs), which could be reversed by EZH2 silencing. The correlation between EZH2 and Sox-9 was further explored, while overexpression of Sox-9 could reverse the effect of EZH2 in rat EPCs. Moreover, inhibition of EZH2 upregulated the level of Sox-9 by demethylating H3K27me3 at Sox-9 promoter sites, revealing the regulatory mechanism of EZH2 on Sox-9. Meanwhile, puncture-induced rat models showed that EZH2 knockdown exerted a protective effect on CEP and disc degeneration. Interpretation This study reveals that EZH2 inhibition is a promising strategy for mitigating the symptoms and progression of IVDD. Funding : This study was funded by the Natural Science Foundation of Zhejiang Province (Y16H060034). Authors declare that the funders had no involvement in the study design, data analysis and interpretation of the results.
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Affiliation(s)
- Chao Jiang
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Qiang Guo
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Yu Jin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Jia-Jing Xu
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Ze-Ming Sun
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Ding-Chao Zhu
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Jia-Hao Lin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Nai-Feng Tian
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China
| | - Liao-Jun Sun
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China.
| | - Xiao-Lei Zhang
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China.
| | - Yao-Sen Wu
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, China.
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BRG1 attenuates colonic inflammation and tumorigenesis through autophagy-dependent oxidative stress sequestration. Nat Commun 2019; 10:4614. [PMID: 31601814 PMCID: PMC6787222 DOI: 10.1038/s41467-019-12573-z] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 09/11/2019] [Indexed: 12/17/2022] Open
Abstract
Autophagy is a central component of integrated stress responses that influences many inflammatory diseases, including inflammatory bowel disease (IBD) and colorectal cancer (CRC). While the core machinery is known, the molecular basis of the epigenetic regulation of autophagy and its role in colon inflammation remain largely undefined. Here, we report that BRG1, an ATPase subunit of the SWI/SNF chromatin remodeling complex, is required for the homeostatic maintenance of intestinal epithelial cells (IECs) to prevent the inflammation and tumorigenesis. BRG1 emerges as a key regulator that directly governs the transcription of Atg16l1, Ambra1, Atg7 and Wipi2, which are important for autophagosome biogenesis. Defective autophagy in BRG1-deficient IECs results in excess reactive oxygen species (ROS), which leads to the defects in barrier integrity. Together, our results establish that BRG1 may represent an autophagy checkpoint that is pathogenetically linked to colitis and is therefore likely a potential therapeutic target for disease intervention. Dysfunctional autophagy induces inflammation that contributes to tumorigenesis. Here, the authors show that loss of BRG1 impairs autophagy and enhances reactive oxygen species production to disrupt intestinal barrier integrity, leading to spontaneous colitis and subsequent colorectal cancer development.
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