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Hu H, Li Z, Xie X, Liao Q, Hu Y, Gong C, Gao N, Yang H, Xiao Y, Chen Y. Insights into the role of RNA m 6A modification in the metabolic process and related diseases. Genes Dis 2024; 11:101011. [PMID: 38560499 PMCID: PMC10978549 DOI: 10.1016/j.gendis.2023.04.038] [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: 01/09/2023] [Accepted: 04/30/2023] [Indexed: 04/04/2024] Open
Abstract
According to the latest consensus, many traditional diseases are considered metabolic diseases, such as cancer, type 2 diabetes, obesity, and cardiovascular disease. Currently, metabolic diseases are increasingly prevalent because of the ever-improving living standards and have become the leading threat to human health. Multiple therapy methods have been applied to treat these diseases, which improves the quality of life of many patients, but the overall effect is still unsatisfactory. Therefore, intensive research on the metabolic process and the pathogenesis of metabolic diseases is imperative. N6-methyladenosine (m6A) is an important modification of eukaryotic RNAs. It is a critical regulator of gene expression that is involved in different cellular functions and physiological processes. Many studies have indicated that m6A modification regulates the development of many metabolic processes and metabolic diseases. In this review, we summarized recent studies on the role of m6A modification in different metabolic processes and metabolic diseases. Additionally, we highlighted the potential m6A-targeted therapy for metabolic diseases, expecting to facilitate m6A-targeted strategies in the treatment of metabolic diseases.
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Affiliation(s)
| | | | | | - Qiushi Liao
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Yiyang Hu
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Chunli Gong
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Nannan Gao
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Huan Yang
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Yufeng Xiao
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Yang Chen
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
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Li L, Xia X, Yang T, Sun Y, Liu X, Xu W, Lu M, Cui D, Wu Y. RNA methylation: A potential therapeutic target in autoimmune disease. Int Rev Immunol 2024; 43:160-177. [PMID: 37975549 DOI: 10.1080/08830185.2023.2280544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023]
Abstract
Autoimmune diseases such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and inflammatory bowel disease (IBD) are caused by the body's immune response to autoantigens. The pathogenesis of autoimmune diseases is unclear. Numerous studies have demonstrated that RNA methylation plays a key role in disease progression, which is essential for post-transcriptional regulation and has gradually become a broad regulatory mechanism that controls gene expression in various physiological processes, including RNA nuclear output, translation, splicing, and noncoding RNA processing. Here, we outline the writers, erasers, and readers of RNA methylation, including N6-methyladenosine (m6A), 2'-O-methylation (Nm), 2'-O-dimethyladenosine (m6Am), N1-methyladenosine (m1A), 5-methylcytidine (m5C) and N7-methylguanosine (m7G). As the role of RNA methylation modifications in the immune system and diseases is explained, the potential treatment value of these modifications has also been demonstrated. This review reports the relationship between RNA methylation and autoimmune diseases, highlighting the need for future research into the therapeutic potential of RNA modifications.
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Affiliation(s)
- Lele Li
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Xiaoping Xia
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Tian Yang
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Yuchao Sun
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Xueke Liu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Wei Xu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Mei Lu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Dawei Cui
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yingping Wu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Jinhua, China
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Li S, Wang Y, Xu A, Zhao B, Xia Y, He Y, Xue H, Li S. Dietary selenomethionine reduced oxidative stress by resisting METTL3-mediated m 6A methylation level of Nrf2 to ameliorate LPS-induced liver necroptosis in laying hens. J Nutr Biochem 2024; 125:109563. [PMID: 38176622 DOI: 10.1016/j.jnutbio.2023.109563] [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: 10/22/2023] [Revised: 11/18/2023] [Accepted: 12/31/2023] [Indexed: 01/06/2024]
Abstract
Selenomethionine (SeMet) as the main form of daily dietary selenium, occupies essential roles in providing antioxidant and anti-inflammatory properties, which alleviates inflammatory liver damage. N6-methyladenosine (m6A) is one of the most prevalent and abundant internal transcriptional modifications that regulate gene expression. To investigate the protective mechanism of SeMet on liver injury and the regulatory effect of m6A methylation modification, we established the model by supplementing dietary SeMet, and LPS as stimulus in laying hens. LMH cells were intervened with SeMet (0.075 µM) and/or LPS (60 µg/mL). Subsequently, histopathology and ultrastructure of liver were observed. Western Blot, qRT-PCR, colorimetry, MeRIP-qPCR, fluorescent probe staining and AO/EB were used to detect total m6A methylation level, m6A methylation level of Nrf2, ROS, inflammatory and necroptosis factors. Studies showed that SeMet suppressed LPS-induced upregulation of total m6A methylation levels and METTL3 expression. Interestingly, SeMet reduced the m6A methylation level of Nrf2, activated antioxidant pathways and alleviated oxidative stress. LMH cells were transfected with 50 µm siMETTL3. SeMet/SiMETTL3 reversed the LPS-induced reduction in Nrf2 mRNA stability, slowed down its degradation rate. Moreover, LPS induced oxidative stress, led to necroptosis and activated NF-κB to promote the expression of inflammatory factors. SeMet/SiMETTL3 alleviated LPS-induced necroptosis and inflammation. Altogether, SeMet enhanced antioxidant and anti-inflammatory capacity by reducing METTL3-mediated m6A methylation levels of Nrf2, ultimately alleviating liver damage. Our findings provided new insights and therapeutic target for the practical application of dietary SeMet in the treatment and prevention of liver inflammation, and supplied a reference for comparative medicine.
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Affiliation(s)
- Shanshan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yixuan Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Anqi Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Bing Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yu Xia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yujiao He
- Cocodala Animal Husbandry and Veterinary Workstation of the Fourth Division of Xinjiang Construction Corps, Cocodala, 831304, P.R. China
| | - Hua Xue
- National Selenium-rich Product Quality Supervision and Inspection Center, Enshi, 445099, P.R. China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China.
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Zheng X, Zhou B, Li Y, Zhong H, Huang Z, Gu M. Transcriptome-wide N 6-methyladenosine methylation profile of atherosclerosis in mice. BMC Genomics 2023; 24:774. [PMID: 38097926 PMCID: PMC10720251 DOI: 10.1186/s12864-023-09878-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 12/06/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Atherosclerosis (AS) is a critical pathological event during the progression of cardiovascular diseases. It exhibits fibrofatty lesions on the arterial wall and lacks effective treatment. N6-methyladenosine (m6A) is the most common modification of eukaryotic RNA and plays an important role in regulating the development and progression of cardiovascular diseases. However, the role of m6A modification in AS remains largely unknown. Therefore, in this study, we explored the transcriptome distribution of m6A modification in AS and its potential mechanism. METHODS Methylation Quantification Kit was used to detect the global m6A levels in the aorta of AS mice. Western blot was used to analyze the protein level of methyltransferases. Methylated RNA immunoprecipitation with next-generation sequencing (MeRIP-seq) and RNA sequencing (RNA-seq) were used to obtain the first transcriptome range analysis of the m6A methylene map in the aorta of AS mice, followed by bioinformatics analysis. qRT-PCR and MeRIP-qRT-PCR were used to measure the mRNA and m6A levels in target genes. RESULTS The global m6A and protein levels of methyltransferase METTL3 were significantly increased in the aorta of AS mice. However, the protein level of demethylase ALKBH5 was significantly decreased. Through MeRIP-seq, we obtained m6A methylation maps in AS and control mice. In total, 26,918 m6A peaks associated with 13,744 genes were detected in AS group, whereas 26,157 m6A peaks associated with 13,283 genes were detected in the control group. Peaks mainly appeared in the coding sequence (CDS) regions close to the stop codon with the RRACH motif. Moreover, functional enrichment analysis demonstrated that m6A-containing genes were significantly enriched in AS-relevant pathways. Interestingly, a negative correlation between m6A methylation abundance and gene expression level was found through the integrated analysis of MeRIP-seq and RNA-seq data. Among the m6A-modified genes, a hypo-methylated but up-regulated (hypo-up) gene Fabp5 may be a potential biomarker of AS. CONCLUSIONS Our study provides transcriptome-wide m6A methylation for the first time to determine the association between m6A modification and AS progression. Our study lays a foundation for further exploring the pathogenesis of AS and provides a new direction for the treatment of AS.
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Affiliation(s)
- Xinbin Zheng
- Clinical Research Center, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China
- Hainan Clinical Research Center for Preventive Treatment of Diseases, 570203, Haikou, Hainan, P. R. China
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China
| | - Bo Zhou
- Department of Cardiology, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China
| | - Yuzhen Li
- Clinical Research Center, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China
| | - Hengren Zhong
- Clinical Research Center, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China
| | - Zhengxin Huang
- Department of Cardiology, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China.
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China.
| | - Minhua Gu
- Department of Cardiology, Hainan Provincial Hospital of Traditional Chinese Medicine, 570203, Haikou, Hainan, P. R. China.
- Hospital of Chinese Medicine affiliated by Hainan Medical University, 570203, Haikou, Hainan, P. R. China.
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Teng Y, Yi J, Chen J, Yang L. N6-Methyladenosine (m6A) Modification in Natural Immune Cell-Mediated Inflammatory Diseases. J Innate Immun 2023; 15:804-821. [PMID: 37903470 PMCID: PMC10673353 DOI: 10.1159/000534162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 09/13/2023] [Indexed: 11/01/2023] Open
Abstract
The post-transcriptional N6-methyladenosine (m6A) modification of RNA influences stability, transport, and translation with implications for various physiological and pathological processes. Immune cell development, differentiation, and activation are also thought to be regulated by m6A and affect host defense against pathogens and inflammatory response with impacts on infectious, neoplastic, autoimmune, cardiovascular, hepatic, and osteal diseases. The current review summarizes recent research on m6A in monocyte/macrophages, neutrophils, dendritic cells, natural killer cells, and microglia and gives insights into epigenetic modifications of the immune system and novel therapeutic strategies for immune-related diseases.
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Affiliation(s)
- Yan Teng
- Institute of Neurology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jin Yi
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Junnian Chen
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Lu Yang
- Institute of Neurology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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Li C, Liu L, Li S, Liu YS. N6-Methyladenosine in Vascular Aging and Related Diseases: Clinical Perspectives. Aging Dis 2023:AD.2023.0924-1. [PMID: 37815911 DOI: 10.14336/ad.2023.0924-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/24/2023] [Indexed: 10/12/2023] Open
Abstract
Aging leads to progressive deterioration of the structure and function of arteries, which eventually contributes to the development of vascular aging-related diseases. N6-methyladenosine (m6A) is the most prevalent modification in eukaryotic RNAs. This reversible m6A RNA modification is dynamically regulated by writers, erasers, and readers, playing a critical role in various physiological and pathological conditions by affecting almost all stages of the RNA life cycle. Recent studies have highlighted the involvement of m6A in vascular aging and related diseases, shedding light on its potential clinical significance. In this paper, we comprehensively discuss the current understanding of m6A in vascular aging and its clinical implications. We discuss the molecular insights into m6A and its association with clinical realities, emphasizing its significance in unraveling the mechanisms underlying vascular aging. Furthermore, we explore the possibility of m6A and its regulators as clinical indicators for early diagnosis and prognosis prediction and investigate the therapeutic potential of m6A-associated anti-aging approaches. We also examine the challenges and future directions in this field and highlight the necessity of integrating m6A knowledge into patient-centered care. Finally, we emphasize the need for multidisciplinary collaboration to advance the field of m6A research and its clinical application.
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Affiliation(s)
- Chen Li
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan, China
| | - Le Liu
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan, China
| | - Shuang Li
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan, China
| | - You-Shuo Liu
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan, China
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Song B, Zeng Y, Cao Y, Zhang J, Xu C, Pan Y, Zhao X, Liu J. Emerging role of METTL3 in inflammatory diseases: mechanisms and therapeutic applications. Front Immunol 2023; 14:1221609. [PMID: 37671161 PMCID: PMC10475571 DOI: 10.3389/fimmu.2023.1221609] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/27/2023] [Indexed: 09/07/2023] Open
Abstract
Despite improvements in modern medical therapies, inflammatory diseases, such as atherosclerosis, diabetes, non-alcoholic fatty liver, chronic kidney diseases, and autoimmune diseases have high incidence rates, still threaten human health, and represent a huge financial burden. N6-methyladenosine (m6A) modification of RNA contributes to the pathogenesis of various diseases. As the most widely discussed m6A methyltransferase, the pathogenic role of METTL3 in inflammatory diseases has become a research hotspot, but there has been no comprehensive review of the topic. Here, we summarize the expression changes, modified target genes, and pathogenesis related to METTL3 in cardiovascular, metabolic, degenerative, immune, and infectious diseases, as well as tumors. In addition to epithelial cells, endothelial cells, and fibroblasts, METTL3 also regulates the function of inflammation-related immune cells, including macrophages, neutrophils, dendritic cells, Th17 cells, and NK cells. Regarding therapeutic applications, METTL3 serves as a target for the treatment of inflammatory diseases with natural plant drug components, such as emodin, cinnamaldehyde, total flavonoids of Abelmoschus manihot, and resveratrol. This review focuses on recent advances in the initiation, development, and therapeutic application of METTL3 in inflammatory diseases. Knowledge of the specific regulatory mechanisms involving METTL3 can help to deepen understanding of inflammatory diseases and lay the foundation for the development of precisely targeted drugs to address inflammatory processes.
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Affiliation(s)
| | | | | | | | | | | | | | - Jingbo Liu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
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Zhang G, Li X, Huang X. m6A-related bioinformatics analysis and functional characterization reveals that METTL3-mediated NPC1L1 mRNA hypermethylation facilitates progression of atherosclerosis via inactivation of the MAPK pathway. Inflamm Res 2023; 72:429-442. [PMID: 36583755 DOI: 10.1007/s00011-022-01681-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Accumulating evidence has demonstrated that N6-methyladenosine (m6A) plays important roles in many major diseases, including atherosclerosis (AS). In the present study, we aimed to explore the transcriptomic m6A landscape of endothelial function-associated genes and identify potential regulators in AS progression. METHODS The GEO data (GSE142386) from MeRIP-seq in human umbilical vein endothelial cells (HUVECs) with METTL3 knocked down or not were analyzed. RNA-seq was performed to identify differences in gene expression. Gene ontology (GO) functional and Kyoto encyclopedia of genes and genomes (KEGG) pathway analyses were conducted to evaluate the potential functions of the differentially expressed genes. MeRIP-qPCR was used to measure the m6A and mRNA levels of the top 8 downregulated genes, and NPC1L1 was selected as the candidate gene. Oxidized low-density lipoprotein (ox-LDL) was used to stimulate HUVECs, and METTL3 or NPC1L1 was silenced in ox-LDL-treated cells. And Transwell, ELISA, and cell apoptosis assays were performed to assess cell functional injury. ApoE-/- mice were fed with high-fat diet for 8 weeks to establish an AS model, and adenovirus-mediated NPC1L1 shRNA or NC shRNA was injected into the mice through the tail vein. Mouse aortic tissue damage and plaque deposition were evaluated by H&E, Oil Red O, and TUNEL staining. RESULTS One hundred and ninety-four hypermethylated m6A peaks and 222 hypomethylated peaks were detected in response to knockdown of METTL3. Genes with altered m6A peaks were significantly involved in the histone modification, enzyme activity, and formation of multiple complexes and were predominantly enriched in the MAPK pathway. NPC1L1 was a most significantly downregulated transcript in response to knockdown of METTL3. Moreover, knockdown of NPC1L1 or de-m6A (METTL3 knockdown)-mediated downregulation of NPC1L1 could improve ox-LDL-induced dysfunction of HUVECs in vitro and high-fat diet-induced atherosclerotic plaque in vivo, which was associated with the inactivation of the MAPK pathway. CONCLUSION METTL3-mediated NPC1L1 mRNA hypermethylation facilitates AS progression by regulating the MAPK pathway, and NPC1L1 may be a novel target for the treatment of AS.
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Affiliation(s)
- Guoan Zhang
- Department of Cardiovascular Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Xuewen Li
- Department of Cardiovascular Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Xiaoyan Huang
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, 256 West Youyi Road, Xi'an, 710068, Shaanxi, China.
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The Role of N 6-Methyladenosine in Inflammatory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9744771. [PMID: 36578520 PMCID: PMC9792239 DOI: 10.1155/2022/9744771] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 12/14/2022]
Abstract
N6-Methyladenosine (m6A) is the most abundant epigenetic RNA modification in eukaryotes, regulating RNA metabolism (export, stability, translation, and decay) in cells through changes in the activity of writers, erasers, and readers and ultimately affecting human life or disease processes. Inflammation is a response to infection and injury in various diseases and has therefore attracted significant attention. Currently, extensive evidence indicates that m6A plays an essential role in inflammation. In this review, we focus on the mechanisms of m6A in inflammatory autoimmune diseases, metabolic disorder, cardio-cerebrovascular diseases, cancer, and pathogen-induced inflammation, as well as its possible role as targets for clinical diagnosis and treatment.
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m6A 'writer' KIAA1429 regulates the proliferation and migration of endothelial cells in atherosclerosis. Mol Biotechnol 2022:10.1007/s12033-022-00614-w. [PMID: 36463391 PMCID: PMC9734602 DOI: 10.1007/s12033-022-00614-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 11/15/2022] [Indexed: 12/05/2022]
Abstract
Increasing evidences have illustrated the important role of N6-methyladenosine (m6A) in atherosclerosis (AS). However, the role of m6A modification in AS pathophysiological process is still unknown. Here, the present work tried to investigate the expression and function of m6A methyltransferase KIAA1429 in AS pathology and explored its undergoing m6A-dependent molecular mechanism. Results indicated that KIAA1429 remarkedly up-regulated in oxidative low-density lipoprotein (ox-LDL)-treated human umbilical vein endothelial cells (HUVECs). KIAA1429 over-expression inhibited the proliferation/migration in ox-LDL-treated HUVECs, while, KIAA1429 knockdown up-regulated the proliferation and migration. Mechanistically, via m6A modification sites binding, ROCK2 mRNA was post-transcriptionally upregulated by KIAA1429 in response to Actinomycin D. Collectively, our study demonstrated the regulation of KIAA1429 on ox-LDL-induced HUVECs via m6A/ROCK2 pathway. These findings provide new insights for m6A-mediated epigenetics in AS.
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Tan Q, He S, Leng X, Zheng D, Mao F, Hao J, Chen K, Jiang H, Lin Y, Yang J. The Mechanism and Role of N6-Methyladenosine (m 6A) Modification in Atherosclerosis and Atherosclerotic Diseases. J Cardiovasc Dev Dis 2022; 9:367. [PMID: 36354766 PMCID: PMC9697759 DOI: 10.3390/jcdd9110367] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 12/27/2023] Open
Abstract
N6-methyladenosine (m6A) modification is a newly discovered regulatory mechanism in eukaryotes. As one of the most common epigenetic mechanisms, m6A's role in the development of atherosclerosis (AS) and atherosclerotic diseases (AD) has also received increasing attention. Herein, we elucidate the effect of m6A on major risk factors for AS, including lipid metabolism disorders, hypertension, and hyperglycemia. We also describe how m6A methylation contributes to endothelial cell injury, macrophage response, inflammation, and smooth muscle cell response in AS and AD. Subsequently, we illustrate the m6A-mediated aberrant biological role in the pathogenesis of AS and AD, and analyze the levels of m6A methylation in peripheral blood or local tissues of AS and AD, which helps to further discuss the diagnostic and therapeutic potential of m6A regulation for AS and AD. In summary, studies on m6A methylation provide new insights into the pathophysiologic mechanisms of AS and AD, and m6A methylation could be a novel diagnostic biomarker and therapeutic target for AS and AD.
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Affiliation(s)
- Quandan Tan
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610072, China
| | - Song He
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610072, China
| | - Xinyi Leng
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Danni Zheng
- Biomedical Informatics and Digital Health, School of Medical Sciences, University of Sydney, Sydney NSW 2050, Australia
| | - Fengkai Mao
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610072, China
| | - Junli Hao
- School of Biomedical Sciences and Technology, Chengdu Medical College, Chengdu 610072, China
| | - Kejie Chen
- School of Public Health, Chengdu Medical College, Chengdu 610072, China
| | - Haisong Jiang
- Department of Neurology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Yapeng Lin
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610072, China
- International Clinical Research Center, Chengdu Medical College, Chengdu 610072, China
| | - Jie Yang
- Department of Neurology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
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Tang H, Huang L, Hu J. Inhibition of the m6A Methyltransferase METTL3 Attenuates the Inflammatory Response in Fusarium solani-Induced Keratitis via the NF-κB Signaling Pathway. Invest Ophthalmol Vis Sci 2022; 63:2. [PMID: 36194423 PMCID: PMC9547362 DOI: 10.1167/iovs.63.11.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose The purpose of this study was to elucidate the effect of methyltransferase-like enzyme 3 (METTL3) on inflammation and the NF-κB signaling pathway in fungal keratitis (FK). Methods We established corneal stromal cell models and FK mouse models by incubation with Fusarium solani. The overall RNA N6-methyladenosine (m6A) level was determined using an m6A RNA methylation assay kit. The expression of METTL3 was quantified via real-time quantitative polymerase chain reaction (RT–PCR), Western blotting, and immunofluorescence. Subsequently, the level of tumor necrosis factor (TNF) receptor-associated factor 6 (TRAF6) was identified by Western blotting and immunofluorescence. Moreover, we assessed the effect of METTL3 by transfecting cells with siRNA (in vitro) or adeno-associated virus (in vivo). Hematoxylin and eosin (H&E) staining and slit-lamp biomicroscopy were performed to evaluate corneal damage. Furthermore, the state of NF-κB signaling pathway activation was examined by Western blotting. In addition, RT–PCR and enzyme-linked immunosorbent assays (ELISAs) were performed to evaluate levels of the pro-inflammatory factors interleukin-1β (IL-1β), interleukin-6 (IL-6) and TNF-ɑ. Results Our data demonstrated that the levels of the RNA m6A methylation and METTL3 were dramatically increased and that the NF-κB signaling pathway was activated in Fusarium solani-induced keratitis. Inhibition of METTL3 decreased the level of TRAF6, downregulated the phospho-p65(p-p65)/p65 and phospho-IκB(p-IκB)/IκB protein ratios, simultaneously attenuating the inflammatory response and fungal burden in FK. Conclusions Our research suggests that the m6A methyltransferase METTL3 regulates the inflammatory response in FK by modulating the NF-κB signaling pathway.
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Affiliation(s)
- Hanfeng Tang
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fu Zhou, China
| | - Liwei Huang
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fu Zhou, China
| | - Jianzhang Hu
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fu Zhou, China
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Liu H, Zheng J, Liao A. The regulation and potential roles of m6A modifications in early embryonic development and immune tolerance at the maternal-fetal interface. Front Immunol 2022; 13:988130. [PMID: 36225914 PMCID: PMC9549360 DOI: 10.3389/fimmu.2022.988130] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/09/2022] [Indexed: 12/16/2022] Open
Abstract
The immune microenvironment at the maternal-fetal interface was determined by the crosstalk between the trophoblast and maternal-derived cells, which dynamically changed during the whole gestation. Trophoblasts act as innate immune cells and dialogue with maternal-derived cells to ensure early embryonic development, depending on the local immune microenvironment. Therefore, dysfunctions in trophoblasts and maternal decidual cells contribute to pregnancy complications, especially recurrent pregnancy loss in early pregnancy. Since many unknown regulatory factors still affect the complex immune status, exploring new potential aspects that could influence early pregnancy is essential. RNA methylation plays an important role in contributing to the transcriptional regulation of various cells. Sufficient studies have shown the crucial roles of N6-methyladenosine (m6A)- and m6A-associated- regulators in embryogenesis during implantation. They are also essential in regulating innate and adaptive immune cells and the immune response and shaping the local and systemic immune microenvironment. However, the function of m6A modifications at the maternal-fetal interface still lacks wide research. This review highlights the critical functions of m6A in early embryonic development, summarizes the reported research on m6A in regulating immune cells and tumor immune microenvironment, and identifies the potential value of m6A modifications in shaping trophoblasts, decidual immune cells, and the microenvironment at the maternal-fetal interface. The m6A modifications are more likely to contribute to embryogenesis, placentation and shape the immune microenvironment at the maternal-fetal interface. Uncovering these crucial regulatory mechanisms could provide novel therapeutic targets for RNA methylation in early pregnancy.
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Affiliation(s)
- Hong Liu
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Affiliated in Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Zheng
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Affiliated in Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Jie Zheng, ; Aihua Liao,
| | - Aihua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Jie Zheng, ; Aihua Liao,
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Li L, Xu N, Liu J, Chen Z, Liu X, Wang J. m6A Methylation in Cardiovascular Diseases: From Mechanisms to Therapeutic Potential. Front Genet 2022; 13:908976. [PMID: 35836571 PMCID: PMC9274458 DOI: 10.3389/fgene.2022.908976] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/07/2022] [Indexed: 01/12/2023] Open
Abstract
Cardiovascular disease (CVD) is a leading cause of morbidity and mortality worldwide. Recent studies have shown that n6-methyladenosine (m6A) plays a major role in cardiovascular homeostasis and pathophysiology. These studies have confirmed that m6A methylation affects the pathophysiology of cardiovascular diseases by regulating cellular processes such as differentiation, proliferation, inflammation, autophagy, and apoptosis. Moreover, plenty of research has confirmed that m6A modification can delay the progression of CVD via the post-transcriptional regulation of RNA. However, there are few available summaries of m6A modification regarding CVD. In this review, we highlight advances in CVD-specific research concerning m6A modification, summarize the mechanisms underlying the involvement of m6A modification during the development of CVD, and discuss the potential of m6A modification as a therapeutic target of CVD.
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Affiliation(s)
| | | | | | | | | | - Junnan Wang
- Department of Cardiology, Second Hospital of Jilin University, Changchun, China
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