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Mu B, Jing J, Li R, Li C. METTL14 inhibits Aβ1-42-induced neuronal injury through regulating the stability of CBLN4 mRNA in Alzheimer's disease. J Bioenerg Biomembr 2024; 56:495-504. [PMID: 39235700 DOI: 10.1007/s10863-024-10036-9] [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: 06/12/2024] [Accepted: 08/21/2024] [Indexed: 09/06/2024]
Abstract
Previous studies have suggested that N6-methyladenosine (mA) modification of RNA affects fundamental aspects of RNA metabolism, and mA dysregulation is implicated in various human diseases, including Alzheimer's disease (AD). This study is designed to explore the role and mechanism of methyltransferase-like 14 (METTL14) in the pathogenesis of AD. SK-N-SH cells were treated with Aβ1-42 to establish an in vitro model of AD. Cerebellin 4 (CBLN4) and METTL14 expression levels were detected by real-time quantitative polymerase chain reaction (RT-qPCR). Cell viability and apoptosis were analyzed using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay and flow cytometry assay. B-cell lymphoma-2 (Bcl-2), Bcl-2 related X protein (Bax), C-caspase-3, total-caspase-3, C/EBP homologous protein (CHOP), and glucose-related protein 78 (GRP78) protein levels were determined using Western blot. Interleukin-1β (IL-1β) and tumor necrosis factor α (TNF-α) levels were analyzed using ELISA. Reactive oxygen species (ROS), malondialdehyde (MDA), and superoxide dismutase (SOD) products were examined using special assay kits. Interaction between CBLN4 and METTL14 was verified using methylated RNA immunoprecipitation (MeRIP) and dual-luciferase reporter assays. CBLN4 and METTL14 expression was decreased in Aβ1-42-treated SK-N-SH cells. Upregulation of CBLN4 relieved Aβ1-42-induced SK-N-SH cell apoptosis, inflammation, oxidative stress, and endoplasmic reticulum (ER) stress in vitro. At the molecular level, METTL14 could improve the stability and expression of CBLN4 mRNA via m6A methylation. Our findings indicated that m6A methylase METTL14-mediated upregulation of CBLN4 mRNA stability could repress Aβ1-42-triggered SK-N-SH cell injury, providing a promising therapeutic target for AD treatment.
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Affiliation(s)
- Bin Mu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, China
| | - Jiangpeng Jing
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, China
| | - Ruichun Li
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, China
| | - Chuankun Li
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, China.
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Xia W, Liu Y, Lu J, Cheung HH, Meng Q, Huang B. RNA methylation in neurodevelopment and related diseases. Acta Biochim Biophys Sin (Shanghai) 2024. [PMID: 39344412 DOI: 10.3724/abbs.2024159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2024] Open
Abstract
Biological development and genetic information transfer are governed by genetic, epigenetic, transcriptional, and posttranscriptional mechanisms. RNA methylation, the attachment of methyl (-CH 3) groups to RNA molecules, is a posttranscriptional modification that has gained increasing attention in recent years because of its role in RNA epitranscriptomics. RNA modifications (RMs) influence various aspects of RNA metabolism and are involved in the regulation of diverse biological processes and diseases. Neural cell types emerge at specific stages of brain development, and recent studies have revealed that neurodevelopment, aging, and disease are tightly linked to transcriptome dysregulation. In this review, we discuss the roles of N6-methyladenine (m6A) and 5-methylcytidine (m5C) RNA modifications in neurodevelopment, physiological functions, and related diseases.
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Affiliation(s)
- Wenjuan Xia
- State Key Laboratory of Reproductive Medicine and Offspring Health (Suzhou), Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Yue Liu
- State Key Laboratory of Reproductive Medicine and Offspring Health (Suzhou), Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Jiafeng Lu
- State Key Laboratory of Reproductive Medicine and Offspring Health (Suzhou), Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Hoi-Hung Cheung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Qingxia Meng
- State Key Laboratory of Reproductive Medicine and Offspring Health (Suzhou), Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Boxian Huang
- State Key Laboratory of Reproductive Medicine and Offspring Health (Suzhou), Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
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Teng S, Han C, Zhou J, He Z, Qian W. m 5C RNA methylation: a potential mechanism for infectious Alzheimer's disease. Front Cell Dev Biol 2024; 12:1440143. [PMID: 39175875 PMCID: PMC11338875 DOI: 10.3389/fcell.2024.1440143] [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: 05/30/2024] [Accepted: 07/30/2024] [Indexed: 08/24/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder caused by a variety of factors, including age, genetic susceptibility, cardiovascular disease, traumatic brain injury, and environmental factors. The pathogenesis of AD is largely associated with the overproduction and accumulation of amyloid-β peptides and the hyperphosphorylation of tau protein in the brain. Recent studies have identified the presence of diverse pathogens, including viruses, bacteria, and parasites, in the tissues of AD patients, underscoring the critical role of central nervous system infections in inducing pathological changes associated with AD. Nevertheless, it remains unestablished about the specific mechanism by which infections lead to the occurrence of AD. As an important post-transcriptional RNA modification, RNA 5-methylcytosine (m5C) methylation regulates a wide range of biological processes, including RNA splicing, nuclear export, stability, and translation, therefore affecting cellular function. Moreover, it has been recently demonstrated that multiple pathogenic microbial infections are associated with the m5C methylation of the host. However, the role of m5C methylation in infectious AD is still uncertain. Therefore, this review discusses the mechanisms of pathogen-induced AD and summarizes research on the molecular mechanisms of m5C methylation in infectious AD, thereby providing new insight into exploring the mechanism underlying infectious AD.
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Affiliation(s)
- Sisi Teng
- Department of Neurology, Shangjinnanfu Hospital, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Cunqiao Han
- Department of Emergency, Shangjinnanfu Hospital, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jian Zhou
- Department of Immunology, International Cancer Center, Shenzhen University Health Science Center, Shenzhen, Guangdong, China
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, Guangdong, China
| | - Zhenyan He
- Department of Neurosurgery, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
| | - Weiwei Qian
- Department of Emergency, Shangjinnanfu Hospital, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Emergency Medicine, Laboratory of Emergency Medicine, West China Hospital, and Disaster Medical Center, Sichuan University, Chengdu, Sichuan, China
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Li C, Liu L, Li S, Liu YS. N 6-Methyladenosine in Vascular Aging and Related Diseases: Clinical Perspectives. Aging Dis 2024; 15:1447-1473. [PMID: 37815911 PMCID: PMC11272212 DOI: 10.14336/ad.2023.0924-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [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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Li L, Yang L, Shen L, Zhao Y, Wang L, Zhang H. Fat Mass and Obesity-Associated Protein Regulates Granulosa Cell Aging by Targeting Matrix Metalloproteinase-2 Gene Via an N6-Methyladenosine-YT521-B Homology Domain Family Member 2-Dependent Pathway in Aged Mice. Reprod Sci 2024:10.1007/s43032-024-01632-6. [PMID: 38995602 DOI: 10.1007/s43032-024-01632-6] [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: 04/18/2024] [Accepted: 06/22/2024] [Indexed: 07/13/2024]
Abstract
In this study, we aimed to investigate the molecular mechanisms of RNA N6-methyladenosine (m6A) modification and how its associated proteins affect granulosa cell aging. A granulosa cell senescence model was constructed to detect the differences in total RNA m6A modification levels and the expression of related enzymes. Changes in downstream molecular expression and the effects on the cellular senescence phenotype were explored by repeatedly knocking down and overexpressing the key genes fat mass and obesity-associated protein (FTO), YT521-B homology domain family member 2 (YTHDF2), and matrix metalloproteinase-2 (MMP2). There was an increased total RNA m6A modification and decreased expression of the demethylase FTO and target gene MMP2 in senescent granulosa cells. FTO and MMP2 knockdown promoted granulosa cell senescence, whereas FTO and MMP2 overexpression retarded it. YTHDF2 and FTO can bind to the messenger RNA of MMP2. The extracellular signal-regulated kinase (ERK) pathway, which is downstream of MMP2, retarded the process of granulosa cell senescence through ERK activators. In granulosa cells, FTO can regulate the expression of MMP2 in an m6A-YTHDF2-dependent manner, influencing the activation status of the ERK pathway and contributing to the aging process of granulosa cells.
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Affiliation(s)
- Linshuang Li
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China
| | - Le Yang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China
| | - Lin Shen
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China
| | - Yiqing Zhao
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China
| | - Lan Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China.
| | - Hanwang Zhang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Jiefang Avenue 1095#, Wuhan, 430030, People's Republic of China.
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Cai H, Zhao J, Zhang Q, Wu H, Sun Y, Guo F, Zhou Y, Qin G, Xia W, Zhao Y, Liang X, Yin S, Qin Y, Li D, Wu H, Ren D. Ubiquitin ligase TRIM15 promotes the progression of pancreatic cancer via the upregulation of the IGF2BP2-TLR4 axis. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167183. [PMID: 38657551 DOI: 10.1016/j.bbadis.2024.167183] [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: 11/30/2023] [Revised: 03/17/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND The tripartite motif family, predominantly characterized by its E3 ubiquitin ligase activities, is involved in various cellular processes including signal transduction, apoptosis and autophagy, protein quality control, immune regulation, and carcinogenesis. Tripartite Motif Containing 15 (TRIM15) plays an important role in melanoma progression through extracellular signal-regulated kinase activation; however, data on its role in pancreatic tumors remain lacking. We previously demonstrated that TRIM15 targeted lipid synthesis and metabolism in pancreatic cancer; however, other specific regulatory mechanisms remain elusive. METHODS We used transcriptomics and proteomics, conducted a series of phenotypic experiments, and used a mouse orthotopic transplantation model to study the specific mechanism of TRIM15 in pancreatic cancer in vitro and in vivo. RESULTS TRIM15 overexpression promoted the progression of pancreatic cancer by upregulating the toll-like receptor 4. The TRIM15 binding protein, IGF2BP2, could combine with TLR4 to inhibit its mRNA degradation. Furthermore, the ubiquitin level of IGF2BP2 was positively correlated with TRIM15. CONCLUSIONS TRIM15 could ubiquitinate IGF2BP2 to enhance the function of phase separation and the maintenance of mRNA stability of TLR4. TRIM15 is a potential therapeutic target against pancreatic cancer.
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Affiliation(s)
- Hongkun Cai
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jingyuan Zhao
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qiyue Zhang
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Heyu Wu
- Department of Operating Room, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yan Sun
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Feng Guo
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yingke Zhou
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Gengdu Qin
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wentao Xia
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yuhan Zhao
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xueyi Liang
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shilin Yin
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yang Qin
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Dan Li
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Heshui Wu
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Dianyun Ren
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Sino-German Laboratory of Personalized Medicine for Pancreatic Cancer, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Jiang L, Roberts R, Wong M, Zhang L, Webber CJ, Libera J, Wang Z, Kilci A, Jenkins M, Ortiz AR, Dorrian L, Sun J, Sun G, Rashad S, Kornbrek C, Daley SA, Dedon PC, Nguyen B, Xia W, Saito T, Saido TC, Wolozin B. β-amyloid accumulation enhances microtubule associated protein tau pathology in an APP NL-G-F/MAPT P301S mouse model of Alzheimer's disease. Front Neurosci 2024; 18:1372297. [PMID: 38572146 PMCID: PMC10987964 DOI: 10.3389/fnins.2024.1372297] [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: 01/17/2024] [Accepted: 03/01/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction The study of the pathophysiology study of Alzheimer's disease (AD) has been hampered by lack animal models that recapitulate the major AD pathologies, including extracellular -amyloid (A) deposition, intracellular aggregation of microtubule associated protein tau (MAPT), inflammation and neurodegeneration. Methods The humanized APPNL-G-F knock-in mouse line was crossed to the PS19 MAPTP301S, over-expression mouse line to create the dual APPNL-G-F/PS19 MAPTP301S line. The resulting pathologies were characterized by immunochemical methods and PCR. Results We now report on a double transgenic APPNL-G-F/PS19 MAPTP301S mouse that at 6 months of age exhibits robust A plaque accumulation, intense MAPT pathology, strong inflammation and extensive neurodegeneration. The presence of A pathology potentiated the other major pathologies, including MAPT pathology, inflammation and neurodegeneration. MAPT pathology neither changed levels of amyloid precursor protein nor potentiated A accumulation. Interestingly, study of immunofluorescence in cleared brains indicates that microglial inflammation was generally stronger in the hippocampus, dentate gyrus and entorhinal cortex, which are regions with predominant MAPT pathology. The APPNL-G-F/MAPTP301S mouse model also showed strong accumulation of N6-methyladenosine (m6A), which was recently shown to be elevated in the AD brain. m6A primarily accumulated in neuronal soma, but also co-localized with a subset of astrocytes and microglia. The accumulation of m6A corresponded with increases in METTL3 and decreases in ALKBH5, which are enzymes that add or remove m6A from mRNA, respectively. Discussion Our understanding of the pathophysiology of Alzheimer's disease (AD) has been hampered by lack animal models that recapitulate the major AD pathologies, including extracellular -amyloid (A) deposition, intracellular aggregation of microtubule associated protein tau (MAPT), inflammation and neurodegeneration. The APPNL-G-F/MAPTP301S mouse recapitulates many features of AD pathology beginning at 6 months of aging, and thus represents a useful new mouse model for the field.
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Affiliation(s)
- Lulu Jiang
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Rebecca Roberts
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Melissa Wong
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Lushuang Zhang
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Chelsea Joy Webber
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Jenna Libera
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Zihan Wang
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Alper Kilci
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Matthew Jenkins
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Alejandro Rondón Ortiz
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Luke Dorrian
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Jingjing Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
- Singapore-MIT Alliance for Research and Technology, Antimicrobial Resistance IRG, Campus for Research Excellence and Technological Enterprise, Singapore, Singapore
| | - Guangxin Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Sherif Rashad
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
- Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | | | - Sarah Anne Daley
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, United States
| | - Peter C. Dedon
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
- Singapore-MIT Alliance for Research and Technology, Antimicrobial Resistance IRG, Campus for Research Excellence and Technological Enterprise, Singapore, Singapore
| | - Brian Nguyen
- LifeCanvas Technologies, Cambridge, MA, United States
| | - Weiming Xia
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, United States
| | - Takashi Saito
- Department of Neurocognitive Science, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takaomi C. Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Saitama, Japan
| | - Benjamin Wolozin
- Department of Anatomy and Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Department of Neurology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Center for Systems Neuroscience, Boston University, Boston, MA, United States
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Qiu ML, Yan W, Liu MM. Klf6 aggravates myocardial ischemia/reperfusion injury by activating Acsl4-mediated ferroptosis. Kaohsiung J Med Sci 2023; 39:989-1001. [PMID: 37530646 DOI: 10.1002/kjm2.12733] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/06/2023] [Accepted: 06/14/2023] [Indexed: 08/03/2023] Open
Abstract
Ferroptosis is closely related to myocardial ischemia/reperfusion (I/R) damage. Kruppel-like factor 6 (Klf6) can aggravate renal I/R injury. We aimed to elucidate the role of Klf6 in myocardial I/R damage as well as its potential mechanism. Myocardial I/R mice model and hypoxia/reoxygenation (H/R)-treated HL-1 cells were established. The levels of Fe2+ , MDA, lipid ROS, and ferroptosis-related proteins were measured for assessing ferroptosis. Infarct area, H&E staining, cardiac function, and cell viability were detected for evaluating myocardial injury. Immunohistochemistry, immunofluorescence, western blot, and RT-qPCR were applied for detecting the levels of related genes. The m6A modification of Klf6, as well as the relationships between Klf6 and Mettl3, Igf2bp2, or Acsl4 promoter, was evaluated using MeRIP, RNA immunoprecipitation, RNA pull-down, chromatin immunoprecipitation, and luciferase reporter assay accordingly.Klf6 protein and mRNA levels, as well as Klf6 m6A modification, were elevated in HL-1 cells subjected to H/R and in the heart tissues from I/R mice. In H/R-challenged HL-1 cells, the binding relationships between Klf6 mRNA and Igf2bp2 or Mettl3 were confirmed; moreover, Igf2bp2 or Mettl3 knockdown decreased the Klf6 level and inhibited Klf6 mRNA stability. Klf6 knockdown restrained H/R-triggered cell viability loss, improved I/R-induced myocardial injury, and inhibited ferroptosis in myocardial I/R damage models. Klf6 directly bound to the Acsl4 promoter and positively regulated its expression. Acsl4 overexpression compromised the Klf6 knockdown-generated protective effect in HL-1 cells.m6A modification-regulated Klf6 aggravated myocardial I/R damage through activating Acsl4-mediated ferroptosis, thereby providing one potential target for the treatment of myocardial I/R.
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Affiliation(s)
- Ma-Li Qiu
- Attending of Cardiovascular Surgery ICU at the Second Xiangya Hospital of Hunan Province, Changsha, Hunan Province, China
| | - Wei Yan
- Physician of Cardiopulmonary bypass specialty at the Second Xiangya Hospital of Hunan Province, Changsha, Hunan Province, China
| | - Mo-Mu Liu
- Attending of Cardiovascular Surgery ICU at the Second Xiangya Hospital of Hunan Province, Changsha, Hunan Province, China
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Xie L, Zhang X, Xie J, Xu Y, Li XJ, Lin L. Emerging Roles for DNA 6mA and RNA m6A Methylation in Mammalian Genome. Int J Mol Sci 2023; 24:13897. [PMID: 37762200 PMCID: PMC10531503 DOI: 10.3390/ijms241813897] [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: 08/10/2023] [Revised: 08/25/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Epigenetic methylation has been shown to play an important role in transcriptional regulation and disease pathogenesis. Recent advancements in detection techniques have identified DNA N6-methyldeoxyadenosine (6mA) and RNA N6-methyladenosine (m6A) as methylation modifications at the sixth position of adenine in DNA and RNA, respectively. While the distributions and functions of 6mA and m6A have been extensively studied in prokaryotes, their roles in the mammalian brain, where they are enriched, are still not fully understood. In this review, we provide a comprehensive summary of the current research progress on 6mA and m6A, as well as their associated writers, erasers, and readers at both DNA and RNA levels. Specifically, we focus on the potential roles of 6mA and m6A in the fundamental biological pathways of the mammalian genome and highlight the significant regulatory functions of 6mA in neurodegenerative diseases.
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Affiliation(s)
| | | | | | | | | | - Li Lin
- Guangdong Key Laboratory of Non-Human Primate Research, Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China; (L.X.); (X.Z.); (J.X.); (Y.X.); (X.-J.L.)
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10
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Hui Y, Ma Q, Zhou XR, Wang H, Dong JH, Gao LN, Zhang T, Li YY, Gong T. Immunological characterization and diagnostic models of RNA N6-methyladenosine regulators in Alzheimer's disease. Sci Rep 2023; 13:14588. [PMID: 37666846 PMCID: PMC10477294 DOI: 10.1038/s41598-023-41129-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: 04/23/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent form of dementia, and it displays both clinical and molecular variability. RNA N6-methyladenosine (m6A) regulators are involved in a wide range of essential cellular processes. In this study, we aimed to identify molecular signatures associated with m6A in Alzheimer's disease and use those signatures to develop a predictive model. We examined the expression patterns of m6A regulators and immune features in Alzheimer's disease using the GSE33000 dataset. We examined the immune cell infiltration and molecular groups based on m6A-related genes in 310 Alzheimer's disease samples. The WGCNA algorithm was utilized to determine differently expressed genes within each cluster. After evaluating the strengths and weaknesses of the random forest model, the support vector machine model, the generalized linear model, and eXtreme Gradient Boosting, the best machine model was selected. Methods such as nomograms, calibration curves, judgment curve analysis, and the use of independent data sets were used to verify the accuracy of the predictions made. Alzheimer's disease and non-disease Alzheimer's groups were compared to identify dysregulated m6A-related genes and activated immune responses. In Alzheimer's disease, two molecular clusters linked to m6A were identified. Immune infiltration analysis indicated substantial variation in protection between groups. Cluster 1 included processes like the Toll-like receptor signaling cascade, positive regulation of chromatin binding, and numerous malignancies; cluster 2 included processes like the cell cycle, mRNA transport, and ubiquitin-mediated proteolysis. With a lower residual and root mean square error and a larger area under the curve (AUC = 0.951), the Random forest machine model showed the greatest discriminative performance. The resulting random forest model was based on five genes, and it performed well (AUC = 0.894) on external validation datasets. Accuracy in predicting Alzheimer's disease subgroups was also shown by analyses of nomograms, calibration curves, and decision curves. In this research, we methodically outlined the tangled web of connections between m6A and AD and created a promising prediction model for gauging the correlation between m6A subtype risk and AD pathology.
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Affiliation(s)
- Yuan Hui
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Qi Ma
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Xue-Rui Zhou
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Huan Wang
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Jian-Hua Dong
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Li-Na Gao
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Tian Zhang
- School of Integrative Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Yan-Yi Li
- Department of Encephalopathy II, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, 730050, China
| | - Ting Gong
- Department of Encephalopathy II, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, 730050, China.
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11
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Park J, Wu Y, Shao W, Gendron TF, van der Spek SJF, Sultanakhmetov G, Basu A, Castellanos Otero P, Jones CJ, Jansen-West K, Daughrity LM, Phanse S, Del Rosso G, Tong J, Castanedes-Casey M, Jiang L, Libera J, Oskarsson B, Dickson DW, Sanders DW, Brangwynne CP, Emili A, Wolozin B, Petrucelli L, Zhang YJ. Poly(GR) interacts with key stress granule factors promoting its assembly into cytoplasmic inclusions. Cell Rep 2023; 42:112822. [PMID: 37471224 PMCID: PMC10528326 DOI: 10.1016/j.celrep.2023.112822] [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: 06/24/2022] [Revised: 12/14/2022] [Accepted: 07/01/2023] [Indexed: 07/22/2023] Open
Abstract
C9orf72 repeat expansions are the most common genetic cause of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). Poly(GR) proteins are toxic to neurons by forming cytoplasmic inclusions that sequester RNA-binding proteins including stress granule (SG) proteins. However, little is known of the factors governing poly(GR) inclusion formation. Here, we show that poly(GR) infiltrates a finely tuned network of protein-RNA interactions underpinning SG formation. It interacts with G3BP1, the key driver of SG assembly and a protein we found is critical for poly(GR) inclusion formation. Moreover, we discovered that N6-methyladenosine (m6A)-modified mRNAs and m6A-binding YTHDF proteins not only co-localize with poly(GR) inclusions in brains of c9FTD/ALS mouse models and patients with c9FTD, they promote poly(GR) inclusion formation via the incorporation of RNA into the inclusions. Our findings thus suggest that interrupting interactions between poly(GR) and G3BP1 or YTHDF1 proteins or decreasing poly(GR) altogether represent promising therapeutic strategies to combat c9FTD/ALS pathogenesis.
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Affiliation(s)
- Jinyoung Park
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yanwei Wu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Sophie J F van der Spek
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Grigorii Sultanakhmetov
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA; Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, Tokyo, 1920397, Japan
| | - Avik Basu
- Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA
| | | | - Caroline J Jones
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Sadhna Phanse
- Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Giulia Del Rosso
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Lulu Jiang
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Jenna Libera
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - David W Sanders
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
| | - Clifford P Brangwynne
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA; Howard Hughes Medical Institute, Princeton, NJ 08544, USA
| | - Andrew Emili
- Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Benjamin Wolozin
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA.
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA.
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12
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Suga N, Ikeda Y, Yoshikawa S, Taniguchi K, Sawamura H, Matsuda S. In Search of a Function for the N6-Methyladenosine in Epitranscriptome, Autophagy and Neurodegenerative Diseases. Neurol Int 2023; 15:967-979. [PMID: 37606395 PMCID: PMC10443253 DOI: 10.3390/neurolint15030062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
Changes in epitranscriptome with N6-methyladenine (m6A) modification could be involved in the development of multiple diseases, which might be a prevalent modification of messenger RNAs (mRNAs) in eukaryotes. The m6A modification might be performed through the action of methyltransferases, demethylases, and methylation-binding proteins. Importantly, the m6A methylation may be associated with various neurological disorders including Alzheimer's disease (AD), Parkinson's disease (PD), depression, aging-related diseases, and/or aging itself. In addition, the m6A methylation might functionally regulate the eukaryotic transcriptome by influencing the splicing, export, subcellular localization, translation, stability, and decay of mRNAs. Neurodegenerative diseases may possess a wide variety of phenotypes, depending on the neurons that degenerate on occasion. Interestingly, an increasing amount of evidence has indicated that m6A modification could modulate the expression of autophagy-related genes and promote autophagy in neuronal cells. Oxidative stresses such as reactive oxygen species (ROS) could stimulate the m6A RNA methylation, which may also be related to the regulation of autophagy and/or the development of neurodegenerative diseases. Both m6A modification and autophagy could also play critical roles in regulating the health condition of neurons. Therefore, a comprehensive understanding of the m6A and autophagy relationship in human diseases may benefit in developing therapeutic strategies in the future. This paper reviews advances in the understanding of the regulatory mechanisms of m6A modification in the occurrence and development of neurodegenerative diseases and/or aging, discussing the possible therapeutic procedures related to mechanisms of m6A RNA methylation and autophagy.
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Affiliation(s)
| | | | | | | | | | - Satoru Matsuda
- Department of Food Science and Nutrition, Nara Women’s University, Kita-Uoya Nishimachi, Nara 630-8506, Japan
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13
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Wan X, Ge Y, Xu S, Feng Y, Zhu Y, Yin L, Pu Y, Liang G. m 6A modification and its role in neural development and neurological diseases. Epigenomics 2023; 15:819-833. [PMID: 37718929 DOI: 10.2217/epi-2023-0190] [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] [Indexed: 09/19/2023] Open
Abstract
N6-methyladenosine (m6A) methylation, the most prevalent post-transcriptional modification in eukaryotes, represents a highly dynamic and reversible process that is regulated by m6A methyltransferases, m6A demethylases and RNA-binding proteins during RNA metabolism, which affects RNA function. Notably, m6A modification is significantly enriched in the brain and exerts regulatory roles in neurogenesis and neurodevelopment through various mechanisms, further influencing the occurrence and progression of neurological disorders. This study systematically summarizes and discusses the latest findings on common m6A regulators, examining their expression, function and mechanisms in neurodevelopment and neurological diseases. Additionally, we explore the potential of m6A modification in diagnosing and treating neurological disorders, aiming to provide new insights into the molecular mechanisms and potential therapeutic strategies for neurological disorders.
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Affiliation(s)
- Xin Wan
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Yiling Ge
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Siyi Xu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Yanlu Feng
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Yuxin Zhu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
| | - Geyu Liang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, PR China
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14
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Kim Y, Lee H. PINNet: a deep neural network with pathway prior knowledge for Alzheimer's disease. Front Aging Neurosci 2023; 15:1126156. [PMID: 37520124 PMCID: PMC10380929 DOI: 10.3389/fnagi.2023.1126156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 06/20/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Identification of Alzheimer's Disease (AD)-related transcriptomic signatures from blood is important for early diagnosis of the disease. Deep learning techniques are potent classifiers for AD diagnosis, but most have been unable to identify biomarkers because of their lack of interpretability. Methods To address these challenges, we propose a pathway information-based neural network (PINNet) to predict AD patients and analyze blood and brain transcriptomic signatures using an interpretable deep learning model. PINNet is a deep neural network (DNN) model with pathway prior knowledge from either the Gene Ontology or Kyoto Encyclopedia of Genes and Genomes databases. Then, a backpropagation-based model interpretation method was applied to reveal essential pathways and genes for predicting AD. Results The performance of PINNet was compared with a DNN model without a pathway. Performances of PINNet outperformed or were similar to those of DNN without a pathway using blood and brain gene expressions, respectively. Moreover, PINNet considers more AD-related genes as essential features than DNN without a pathway in the learning process. Pathway analysis of protein-protein interaction modules of highly contributed genes showed that AD-related genes in blood were enriched with cell migration, PI3K-Akt, MAPK signaling, and apoptosis in blood. The pathways enriched in the brain module included cell migration, PI3K-Akt, MAPK signaling, apoptosis, protein ubiquitination, and t-cell activation. Discussion By integrating prior knowledge about pathways, PINNet can reveal essential pathways related to AD. The source codes are available at https://github.com/DMCB-GIST/PINNet.
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Affiliation(s)
- Yeojin Kim
- Artificial Intelligence Graduate School, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Hyunju Lee
- Artificial Intelligence Graduate School, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
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15
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Gao P, Yao F, Pang J, Yin K, Zhu X. m 6A methylation in cellular senescence of age-associated diseases. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1168-1183. [PMID: 37394885 PMCID: PMC10449638 DOI: 10.3724/abbs.2023107] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/14/2023] [Indexed: 07/04/2023] Open
Abstract
Cellular senescence is a state of irreversible cellular growth arrest that occurs in response to various stresses. In addition to exiting the cell cycle, senescent cells undergo many phenotypic alterations, including metabolic reprogramming, chromatin rearrangement, and senescence-associated secretory phenotype (SASP) development. Furthermore, senescent cells can affect most physiological and pathological processes, such as physiological development; tissue homeostasis; tumour regression; and age-associated disease progression, including diabetes, atherosclerosis, Alzheimer's disease, and hypertension. Although corresponding anti-senescence therapies are actively being explored for the treatment of age-associated diseases, the specific regulatory mechanisms of senescence remain unclear. N 6-methyladenosine (m 6A), a chemical modification commonly distributed in eukaryotic RNA, plays an important role in biological processes such as translation, shearing, and RNA transcription. Numerous studies have shown that m 6A plays an important regulatory role in cellular senescence and aging-related disease. In this review, we systematically summarize the role of m 6A modifications in cellular senescence with regard to oxidative stress, DNA damage, telomere alterations, and SASP development. Additionally, diabetes, atherosclerosis, and Alzheimer's disease regulation via m 6A-mediated cellular senescence is discussed. We further discuss the challenges and prospects of m 6A in cellular senescence and age-associated diseases with the aim of providing rational strategies for the treatment of these age-associated diseases.
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Affiliation(s)
- Pan Gao
- Guangxi Key Laboratory of Diabetic Systems MedicineGuilin Medical UniversityGuilin541100China
| | - Feng Yao
- Guangxi Key Laboratory of Diabetic Systems MedicineGuilin Medical UniversityGuilin541100China
| | - Jin Pang
- Guangxi Key Laboratory of Diabetic Systems MedicineGuilin Medical UniversityGuilin541100China
| | - Kai Yin
- The Fifth Affiliated Hospital of Southern Medical UniversityGuangzhou510900China
| | - Xiao Zhu
- Guangxi Key Laboratory of Diabetic Systems MedicineGuilin Medical UniversityGuilin541100China
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16
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Lv J, Xing L, Zhong X, Li K, Liu M, Du K. Role of N6-methyladenosine modification in central nervous system diseases and related therapeutic agents. Biomed Pharmacother 2023; 162:114583. [PMID: 36989722 DOI: 10.1016/j.biopha.2023.114583] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023] Open
Abstract
N6-methyladenosine (m6A) is a ubiquitous mRNA modification in eukaryotes. m6A occurs through the action of methyltransferases, demethylases, and methylation-binding proteins. m6A methylation of RNA is associated with various neurological disorders, including Alzheimer's disease (AD), Parkinson's disease (PD), depression, cerebral apoplexy, brain injury, epilepsy, cerebral arteriovenous malformations, and glioma. Furthermore, recent studies report that m6A-related drugs have attracted considerable concerns in the therapeutic areas of neurological disorders. Here, we mainly summarized the role of m6A modification in neurological diseases and the therapeutic potential of m6A-related drugs. The aim of this review is expected to be useful to systematically assess m6A as a new potential biomarker and develop innovative modulators of m6A for the amelioration and treatment of neurological disorders.
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Affiliation(s)
- Junya Lv
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China
| | - Lijuan Xing
- Precision Laboratory of Panjin Central Hospital, Panjin 124000, China
| | - Xin Zhong
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China
| | - Kai Li
- Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, the First Affiliated Hospital of China Medical University, Shenyang 110001, China.
| | - Mingyan Liu
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China; Liaoning Medical Diagnosis and Treatment Center, Shenyang 110179, China.
| | - Ke Du
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China; Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, the First Affiliated Hospital of China Medical University, Shenyang 110001, China; Liaoning Medical Diagnosis and Treatment Center, Shenyang 110179, China.
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17
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Jiang L, Roberts R, Wong M, Zhang L, Webber CJ, Kilci A, Jenkins M, Sun J, Sun G, Rashad S, Dedon PC, Daley SA, Xia W, Ortiz AR, Dorrian L, Saito T, Saido TC, Wolozin B. Accumulation of m 6A exhibits stronger correlation with MAPT than β-amyloid pathology in an APP NL-G-F /MAPT P301S mouse model of Alzheimer's disease. RESEARCH SQUARE 2023:rs.3.rs-2745852. [PMID: 37292629 PMCID: PMC10246280 DOI: 10.21203/rs.3.rs-2745852/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The study for the pathophysiology study of Alzheimer's disease (AD) has been hampered by lack animal models that recapitulate the major AD pathologies, including extracellular β-amyloid (Aβ) deposition, intracellular aggregation of microtubule associated protein tau (MAPT), inflammation and neurodegeneration. We now report on a double transgenic APPNL-G-F MAPTP301S mouse that at 6 months of age exhibits robust Aβ plaque accumulation, intense MAPT pathology, strong inflammation and extensive neurodegeneration. The presence of Aβ pathology potentiated the other major pathologies, including MAPT pathology, inflammation and neurodegeneration. However, MAPT pathology neither changed levels of amyloid precursor protein nor potentiated Aβ accumulation. The APPNL-G-F/MAPTP301S mouse model also showed strong accumulation of N6-methyladenosine (m6A), which was recently shown to be elevated in the AD brain. M6A primarily accumulated in neuronal soma, but also co-localized with a subset of astrocytes and microglia. The accumulation of m6A corresponded with increases in METTL3 and decreases in ALKBH5, which are enzymes that add or remove m6A from mRNA, respectively. Thus, the APPNL-G-F/MAPTP301S mouse recapitulates many features of AD pathology beginning at 6 months of aging.
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Affiliation(s)
- Lulu Jiang
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Rebecca Roberts
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Melissa Wong
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Lushuang Zhang
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Chelsea Joy Webber
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Alper Kilci
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Matthew Jenkins
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Jingjing Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Singapore-MIT Alliance for Research and Technology, Antimicrobial Resistance IRG, Campus for Research Excellence and Technological Enterprise, Singapore 138602, Singapore
| | - Guangxin Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sherif Rashad
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Peter C Dedon
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Sarah Anne Daley
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, 01730, USA
| | - Weiming Xia
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, 01730, USA
| | - Alejandro Rondón Ortiz
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Luke Dorrian
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Takashi Saito
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako-shi, Saitama, 351-0198,Japan
| | - Takaomi C. Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako-shi, Saitama, 351-0198,Japan
| | - Benjamin Wolozin
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118, USA
- Department of Neurology, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, USA
- Center for Systems Neuroscience, Boston University, Boston, MA USA
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18
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Jiang L, Roberts R, Wong M, Zhang L, Webber CJ, Kilci A, Jenkins M, Sun G, Rashad S, Sun J, Dedon PC, Daley SA, Xia W, Ortiz AR, Dorrian L, Saito T, Saido TC, Wolozin B. Accumulation of m 6A exhibits stronger correlation with MAPT than β-amyloid pathology in an APP NL-G-F /MAPT P301S mouse model of Alzheimer's disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.28.534515. [PMID: 37034774 PMCID: PMC10081259 DOI: 10.1101/2023.03.28.534515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The study for the pathophysiology study of Alzheimer's disease (AD) has been hampered by lack animal models that recapitulate the major AD pathologies, including extracellular β-amyloid (Aβ) deposition, intracellular aggregation of microtubule associated protein tau (MAPT), inflammation and neurodegeneration. We now report on a double transgenic APPNL-G-F MAPTP301S mouse that at 6 months of age exhibits robust Aβ plaque accumulation, intense MAPT pathology, strong inflammation and extensive neurodegeneration. The presence of Aβ pathology potentiated the other major pathologies, including MAPT pathology, inflammation and neurodegeneration. However, MAPT pathology neither changed levels of amyloid precursor protein nor potentiated Aβ accumulation. The APPNL-G-F/MAPTP301S mouse model also showed strong accumulation of N6-methyladenosine (m6A), which was recently shown to be elevated in the AD brain. M6A primarily accumulated in neuronal soma, but also co-localized with a subset of astrocytes and microglia. The accumulation of m6A corresponded with increases in METTL3 and decreases in ALKBH5, which are enzymes that add or remove m6A from mRNA, respectively. Thus, the APPNL-G-F/MAPTP301S mouse recapitulates many features of AD pathology beginning at 6 months of aging.
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Affiliation(s)
- Lulu Jiang
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Rebecca Roberts
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Melissa Wong
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Lushuang Zhang
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Chelsea Joy Webber
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Alper Kilci
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Matthew Jenkins
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Guangxin Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sherif Rashad
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Jingjing Sun
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Singapore-MIT Alliance for Research and Technology, Antimicrobial Resistance IRG, Campus for Research Excellence and Technological Enterprise, Singapore 138602, Singapore
| | - Peter C Dedon
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Singapore-MIT Alliance for Research and Technology, Antimicrobial Resistance IRG, Campus for Research Excellence and Technological Enterprise, Singapore 138602, Singapore
| | - Sarah Anne Daley
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, 01730, USA
| | - Weiming Xia
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
- Geriatric Research Education and Clinical Center, Bedford VA Healthcare System, Bedford, MA, 01730, USA
| | - Alejandro Rondón Ortiz
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Luke Dorrian
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
| | - Takashi Saito
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako-shi, Saitama, 351-0198, Japan
| | - Takaomi C. Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako-shi, Saitama, 351-0198, Japan
| | - Benjamin Wolozin
- Department of Pharmacology, Physiology and Biophysics, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, 02118
- Department of Neurology, Chobanian and Avedesian School of Medicine, Boston University, Boston, MA, USA
- Center for Systems Neuroscience, Boston University, Boston, MA USA
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19
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Conserved reduction of m 6A RNA modifications during aging and neurodegeneration is linked to changes in synaptic transcripts. Proc Natl Acad Sci U S A 2023; 120:e2204933120. [PMID: 36812208 PMCID: PMC9992849 DOI: 10.1073/pnas.2204933120] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
N6-methyladenosine (m6A) regulates mRNA metabolism. While it has been implicated in the development of the mammalian brain and in cognition, the role of m6A in synaptic plasticity, especially during cognitive decline, is not fully understood. In this study, we employed methylated RNA immunoprecipitation sequencing to obtain the m6A epitranscriptome of the hippocampal subregions CA1, CA3, and the dentate gyrus and the anterior cingulate cortex (ACC) in young and aged mice. We observed a decrease in m6A levels in aged animals. Comparative analysis of cingulate cortex (CC) brain tissue from cognitively intact human subjects and Alzheimer's disease (AD) patients showed decreased m6A RNA methylation in AD patients. m6A changes common to brains of aged mice and AD patients were found in transcripts linked to synaptic function including calcium/calmodulin-dependent protein kinase 2 (CAMKII) and AMPA-selective glutamate receptor 1 (Glua1). We used proximity ligation assays to show that reduced m6A levels result in decreased synaptic protein synthesis as exemplified by CAMKII and GLUA1. Moreover, reduced m6A levels impaired synaptic function. Our results suggest that m6A RNA methylation controls synaptic protein synthesis and may play a role in cognitive decline associated with aging and AD.
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20
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Zhu Y, Li J, Yang H, Yang X, Zhang Y, Yu X, Li Y, Chen G, Yang Z. The potential role of m6A reader YTHDF1 as diagnostic biomarker and the signaling pathways in tumorigenesis and metastasis in pan-cancer. Cell Death Dis 2023; 9:34. [PMID: 36707507 PMCID: PMC9883452 DOI: 10.1038/s41420-023-01321-4] [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: 11/26/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/29/2023]
Abstract
m6A is an important RNA methylation in progression of various human cancers. As the m6A reader protein, YTHDF1 is reported to accelerate m6A-modified mRNAs translation in cytoplasm. It is highly expressed in various human cancers and contributes to the progression and metastasis of cancers. YTHDF1 was closely associated with poor prognosis and also used as a molecular marker for clinical diagnosis or therapy in human cancers. It has been reported to promote chemoresistance to Adriamycin, Cisplatin and Olaparib by increasing mRNA stability of its target molecule. Moreover, it contributes to CSC-like characteristic of tumor cells and inducing the antitumor immune microenvironment. Here, we reviewed the clinical diagnostic and prognostic values of YTHDF1, as well as the molecular mechanisms of YTHDF1 in progression and metastasis of human cancers.
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Affiliation(s)
- Yanan Zhu
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Jing Li
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Hang Yang
- grid.415444.40000 0004 1800 0367Department of Rehabilitation Medicine, The Second Affiliated Hospital of Kunming Medical University, 650106 Kunming, Yunnan China
| | - Xinyi Yang
- grid.413458.f0000 0000 9330 9891Guizhou Medical University, 550004 Guiyang, Guizhou China
| | - Ya Zhang
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Xinchao Yu
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Ying Li
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Gangxian Chen
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
| | - Zuozhang Yang
- grid.452826.fBone and Soft Tissue Tumors Research Centre of Yunnan Province, Department of Orthopaedics, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital), 650118 Kunming, Yunnan China
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21
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Wagner A, Schosserer M. The epitranscriptome in ageing and stress resistance: A systematic review. Ageing Res Rev 2022; 81:101700. [PMID: 35908668 DOI: 10.1016/j.arr.2022.101700] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 01/31/2023]
Abstract
Modifications of RNA, collectively called the "epitranscriptome", might provide novel biomarkers and innovative targets for interventions in geroscience but are just beginning to be studied in the context of ageing and stress resistance. RNA modifications modulate gene expression by affecting translation initiation and speed, miRNA binding, RNA stability, and RNA degradation. Nonetheless, the precise underlying molecular mechanisms and physiological consequences of most alterations of the epitranscriptome are still only poorly understood. We here systematically review different types of modifications of rRNA, tRNA and mRNA, the methodology to analyze them, current challenges in the field, and human disease associations. Furthermore, we compiled evidence for a connection between individual enzymes, which install RNA modifications, and lifespan in yeast, worm and fly. We also included resistance to different stressors and competitive fitness as search criteria for genes potentially relevant to ageing. Promising candidates identified by this approach include RCM1/NSUN5, RRP8, and F33A8.4/ZCCHC4 that introduce base methylations in rRNA, the methyltransferases DNMT2 and TRM9/ALKBH8, as well as factors involved in the thiolation or A to I editing in tRNA, and finally the m6A machinery for mRNA.
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Affiliation(s)
- Anja Wagner
- Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Markus Schosserer
- Institute of Molecular Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria; Institute of Medical Genetics, Center for Pathobiochemistry and Genetics, Medical University of Vienna, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria.
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22
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You S, Su X, Ying J, Li S, Qu Y, Mu D. Research Progress on the Role of RNA m6A Modification in Glial Cells in the Regulation of Neurological Diseases. Biomolecules 2022; 12:biom12081158. [PMID: 36009052 PMCID: PMC9405963 DOI: 10.3390/biom12081158] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Glial cells are the most abundant and widely distributed cells that maintain cerebral homeostasis in the central nervous system. They mainly include microglia, astrocytes, and the oligodendrocyte lineage cells. Moreover, glial cells may induce pathological changes, such as inflammatory responses, demyelination, and disruption of the blood–brain barrier, to regulate the occurrence and development of neurological diseases through various molecular mechanisms. Furthermore, RNA m6A modifications are involved in various pathological processes associated with glial cells. In this review, the roles of glial cells in physiological and pathological states, as well as advances in understanding the mechanisms by which glial cells regulate neurological diseases under RNA m6A modification, are summarized, hoping to provide new perspectives on the deeper mechanisms and potential therapeutic targets for neurological diseases.
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Affiliation(s)
- Siyi You
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaojuan Su
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
| | - Junjie Ying
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
| | - Shiping Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
| | - Yi Qu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
| | - Dezhi Mu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
- Correspondence:
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23
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Maimaiti A, Turhon M, Cheng X, Su R, Kadeer K, Axier A, Ailaiti D, Aili Y, Abudusalamu R, Kuerban A, Wang Z, Aisha M. m6A regulator–mediated RNA methylation modification patterns and immune microenvironment infiltration characterization in patients with intracranial aneurysms. Front Neurol 2022; 13:889141. [PMID: 35989938 PMCID: PMC9389407 DOI: 10.3389/fneur.2022.889141] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe role of epigenetic modulation in immunity is receiving increased recognition—particularly in the context of RNA N6-methyladenosine (m6A) modifications. Nevertheless, it is still uncertain whether m6A methylation plays a role in the onset and progression of intracranial aneurysms (IAs). This study aimed to establish the function of m6A RNA methylation in IA, as well as its correlation with the immunological microenvironment.MethodsOur study included a total of 97 samples (64 IA, 33 normal) in the training set and 60 samples (44 IA, 16 normal) in the validation set to systematically assess the pattern of RNA modifications mediated by 22 m6A regulators. The effects of m6A modifications on immune microenvironment features, i.e., immune response gene sets, human leukocyte antigen (HLA) genes, and infiltrating immune cells were explored. We employed Lasso, machine learning, and logistic regression for the purpose of identifying an m6A regulator gene signature of IA with external data validation. For the unsupervised clustering analysis of m6A modification patterns in IA, consensus clustering methods were employed. Enrichment analysis was used to assess immune response activity along with other functional pathways. The identification of m6A methylation markers was identified based on a protein–protein interaction network and weighted gene co-expression network analysis.ResultsWe identified an m6A regulator signature of IGFBP2, IGFBP1, IGF2BP2, YTHDF3, ALKBH5, RBM15B, LRPPRC, and ELAVL1, which could easily distinguish individuals with IA from healthy individuals. Unsupervised clustering revealed three m6A modification patterns. Gene enrichment analysis illustrated that the tight junction, p53 pathway, and NOTCH signaling pathway varied significantly in m6A modifier patterns. In addition, the three m6A modification patterns showed significant differences in m6A regulator expression, immune microenvironment, and bio-functional pathways. Furthermore, macrophages, activated T cells, and other immune cells were strongly correlated with m6A regulators. Eight m6A indicators were discovered—each with a statistically significant correlation with IA—suggesting their potential as prognostic biological markers.ConclusionOur study demonstrates that m6A RNA methylation and the immunological microenvironment are both intricately correlated with the onset and progression of IA. The novel insight into patterns of m6A modification offers a foundation for the development of innovative treatment approaches for IA.
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Affiliation(s)
- Aierpati Maimaiti
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Mirzat Turhon
- Department of Neurointerventional Surgery, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- Department of Neurointerventional Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaojiang Cheng
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Riqing Su
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Kaheerman Kadeer
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Aximujiang Axier
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dilimulati Ailaiti
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yirizhati Aili
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Rena Abudusalamu
- Department of Neurology, Neurology Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ajimu Kuerban
- Department of Neurosurgery, The First People's Hospital of Kashgar Prefecture, Kashgar, China
| | - Zengliang Wang
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Zengliang Wang
| | - Maimaitili Aisha
- Department of Neurosurgery, Neurosurgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- *Correspondence: Maimaitili Aisha
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24
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The Potential Role of m6A in the Regulation of TBI-Induced BGA Dysfunction. Antioxidants (Basel) 2022; 11:antiox11081521. [PMID: 36009239 PMCID: PMC9405408 DOI: 10.3390/antiox11081521] [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] [Received: 06/14/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 02/01/2023] Open
Abstract
The brain–gut axis (BGA) is an important bidirectional communication pathway for the development, progress and interaction of many diseases between the brain and gut, but the mechanisms remain unclear, especially the post-transcriptional regulation of BGA after traumatic brain injury (TBI). RNA methylation is one of the most important modifications in post-transcriptional regulation. N6-methyladenosine (m6A), as the most abundant post-transcriptional modification of mRNA in eukaryotes, has recently been identified and characterized in both the brain and gut. The purpose of this review is to describe the pathophysiological changes in BGA after TBI, and then investigate the post-transcriptional bidirectional regulation mechanisms of TBI-induced BGA dysfunction. Here, we mainly focus on the characteristics of m6A RNA methylation in the post-TBI BGA, highlight the possible regulatory mechanisms of m6A modification in TBI-induced BGA dysfunction, and finally discuss the outcome of considering m6A as a therapeutic target to improve the recovery of the brain and gut dysfunction caused by TBI.
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25
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Sun X, Lu J, Li H, Huang B. The Role of m 6A on Female Reproduction and Fertility: From Gonad Development to Ovarian Aging. Front Cell Dev Biol 2022; 10:884295. [PMID: 35712673 PMCID: PMC9197073 DOI: 10.3389/fcell.2022.884295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/21/2022] [Indexed: 11/20/2022] Open
Abstract
The growth and maturation of oocyte is accompanied by the accumulation of abundant RNAs and posttranscriptional regulation. N6-methyladenosine (m6A) is the most prevalent epigenetic modification in mRNA, and precisely regulates the RNA metabolism as well as gene expression in diverse physiological processes. Recent studies showed that m6A modification and regulators were essential for the process of ovarian development and its aberrant manifestation could result in ovarian aging. Moreover, the specific deficiency of m6A regulators caused oocyte maturation disorder and female infertility with defective meiotic initiation, subsequently the oocyte failed to undergo germinal vesicle breakdown and consequently lost the ability to resume meiosis by disrupting spindle organization as well as chromosome alignment. Accumulating evidence showed that dysregulated m6A modification contributed to ovarian diseases including polycystic ovarian syndrome (PCOS), primary ovarian insufficiency (POI), ovarian aging and other ovarian function disorders. However, the complex and subtle mechanism of m6A modification involved in female reproduction and fertility is still unknown. In this review, we have summarized the current findings of the RNA m6A modification and its regulators in ovarian life cycle and female ovarian diseases. And we also discussed the role and potential clinical application of the RNA m6A modification in promoting oocyte maturation and delaying the reproduction aging.
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Affiliation(s)
- Xiaoyan Sun
- State Key Laboratory of Reproductive Medicine, Gusu School, Suzhou Municipal Hospital, Suzhou Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Suzhou, China
| | - Jiafeng Lu
- State Key Laboratory of Reproductive Medicine, Gusu School, Suzhou Municipal Hospital, Suzhou Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Suzhou, China
| | - Hong Li
- State Key Laboratory of Reproductive Medicine, Gusu School, Suzhou Municipal Hospital, Suzhou Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Suzhou, China
| | - Boxian Huang
- State Key Laboratory of Reproductive Medicine, Gusu School, Suzhou Municipal Hospital, Suzhou Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Suzhou, China
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26
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Metabolomics Study Suggests the Mechanism of Different Types of Tieguanyin (Oolong) Tea in Alleviating Alzheimer’s Disease in APP/PS1 Transgenic Mice. Metabolites 2022; 12:metabo12050466. [PMID: 35629970 PMCID: PMC9142883 DOI: 10.3390/metabo12050466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 02/04/2023] Open
Abstract
Previously, we found that three types of Tieguanyin tea (Tgy-Q, Tgy-N and Tgy-C) extracts could alleviate Alzheimer’s disease (AD) in a mouse model among which Tgy-C was more effective. In this study, APP/PS1 transgenic mice were used to investigate the metabolomic changes in the feces of mice treated with Tieguanyin tea extracts. Results showed that the profile of fecal metabolites was obviously changed in AD mice. Metabolomics analysis found the effects of Tgy-C, especially its decreasing effect on the fecal metabolites in AD mice—132 of the 155 differential metabolites were decreased. KEGG enrichment revealed that differential metabolites could participate in functional pathways including protein digestion and absorption, biosynthesis of amino acids and ABC transporters. Further comparisons of the metabolites between groups showed that although Tgy-N and Tgy-Q exerted a decreasing effect on the fecal metabolites, Tgy-C was more effective. Moreover, correlation analysis found that the levels of the fecal metabolites were highly correlated with the contents of functional components in tea extracts. Finally, 16S rDNA sequencing presented that Tieguanyin extracts modified the gut microbiota by targeting diverse bacteria. In this study, we investigated the differences of three types of Tieguanyin tea extracts on the fecal metabolites as well as the bacterial community of the gut microbiota in AD mice. The identified differential metabolites and the changed intestinal bacteria might provide potential diagnostic biomarkers for the occurrence and progression of AD.
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27
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Sun J, Cheng B, Su Y, Li M, Ma S, Zhang Y, Zhang A, Cai S, Bao Q, Wang S, Zhu P. The Potential Role of m6A RNA Methylation in the Aging Process and Aging-Associated Diseases. Front Genet 2022; 13:869950. [PMID: 35518355 PMCID: PMC9065606 DOI: 10.3389/fgene.2022.869950] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 03/31/2022] [Indexed: 12/15/2022] Open
Abstract
N6-methyladenosine (m6A) is the most common and conserved internal eukaryotic mRNA modification. m6A modification is a dynamic and reversible post-transcriptional regulatory modification, initiated by methylase and removed by RNA demethylase. m6A-binding proteins recognise the m6A modification to regulate gene expression. Recent studies have shown that altered m6A levels and abnormal regulator expression are crucial in the ageing process and the occurrence of age-related diseases. In this review, we summarise some key findings in the field of m6A modification in the ageing process and age-related diseases, including cell senescence, autophagy, inflammation, oxidative stress, DNA damage, tumours, neurodegenerative diseases, diabetes, and cardiovascular diseases (CVDs). We focused on the biological function and potential molecular mechanisms of m6A RNA methylation in ageing and age-related disease progression. We believe that m6A modification may provide a new target for anti-ageing therapies.
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Affiliation(s)
- Jin Sun
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Bokai Cheng
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Yongkang Su
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Man Li
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Shouyuan Ma
- Department of Geriatric Cardiology, The Second Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yan Zhang
- Department of Outpatient, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Anhang Zhang
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Shuang Cai
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Qiligeer Bao
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Shuxia Wang
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
| | - Ping Zhu
- Department of Geriatrics, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
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28
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Ding L, Wu H, Wang Y, Li Y, Liang Z, Xia X, Zheng JC. m6A Reader Igf2bp1 Regulates the Inflammatory Responses of Microglia by Stabilizing Gbp11 and Cp mRNAs. Front Immunol 2022; 13:872252. [PMID: 35572575 PMCID: PMC9100696 DOI: 10.3389/fimmu.2022.872252] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/04/2022] [Indexed: 11/17/2022] Open
Abstract
Microglia are brain resident cells that function as brain phagocytic macrophages. The inflammatory responses of microglia induced by pathologic insults are key regulators in the progression of various neurological disorders. Currently, little is known about how these responses are regulated intrinsically. Here, it is observed that LPS-activated microglia exhibit distinct N6-methyladenosine (m6A) methylation patterns that are positively correlated with the expression patterns of corresponding mRNAs. High-throughput analyses and molecular studies both identified Igf2bp1 as the most significantly regulated m6A modifiers in activated microglia. Perturbation of function approaches further indicated Igf2bp1 as a key mediator for LPS-induced m6A modification and microglial activation presumably via enhancing the m6A methylation and stability of Gbp11 and Cp mRNAs. Thus, our study provides a possible mechanism for the m6A methylation-mediated microglia regulation and identifies Igf2bp1 as a potential target for modulating the inflammatory responses of microglia.
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Affiliation(s)
- Lu Ding
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Huiran Wu
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Yi Wang
- Translational Research Center, Shanghai Yangzhi Rehabilitation Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Yun Li
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Zhanping Liang
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Xiaohuan Xia
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, Shanghai, China
- *Correspondence: Jialin C. Zheng, ; Xiaohuan Xia,
| | - Jialin C. Zheng
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
- Shanghai Frontiers Science Center of Nanocatalytic Medicine, Tongji University, Shanghai, China
- Collaborative Innovation Center for Brain Science, Tongji University, Shanghai, China
- *Correspondence: Jialin C. Zheng, ; Xiaohuan Xia,
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IGF2BP2 maybe a novel prognostic biomarker in oral squamous cell carcinoma. Biosci Rep 2022; 42:230746. [PMID: 35129592 PMCID: PMC8859425 DOI: 10.1042/bsr20212119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 11/25/2022] Open
Abstract
Aim: The main of the present study was to investigate the role of insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) in oral squamous cell carcinoma (OSCC) with the overarching of providing new biomarkers or potential therapeutic targets for OSCC. Methods: We combined datasets downloaded from Gene Expression Omnibus (GEO), The Cancer Genome Atlas (TCGA), and samples collected from the clinic to evaluate the expression of IGF2BP2 in OSCC. IGF2BP2 survival analysis was respectively performed based on TCGA, GEO, and clinical samples. Correlations between IGF2BP2 expression and clinicopathological parameters were then analyzed, and signaling pathways associated with IGF2BP2 expression were identified using gene set enrichment analysis (GSEA 4.1.0). Moreover, an IGF2BP2 co-expressed gene network was constructed, followed by gene ontology (GO) functional enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis on IGF2BP2 co-expressed genes. Finally, TIMER and CIBERSORT were used to analyze the correlations among IGF2BP2, IGF2BP2-coexpressed genes, and tumor-infiltrating immune cells (TICs). Results: IGF2BP2 was highly expressed in OSCC and significantly correlated with overall survival of OSCC patients (P<0.01). High IGF2BP2 expression correlated with poor overall survival. The GSEA results showed that cell apoptosis-, tumor-, and immune-related pathways were significantly enriched in samples with high IGF2BP2 expression. Furthermore, GO and KEGG enrichment analyses results of IGF2BP2 co-expressed genes indicated that these genes are mainly associated with immunity/inflammation and tumorigenesis. In addition, IGF2BP2 and its co-expressed genes are associated with TICs (P<0.01). Conclusion: IGF2BP2 may be a potential prognostic biomarker in OSCC and correlates with immune infiltrates.
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Lv S, Zhou X, Li YM, Yang T, Zhang SJ, Wang Y, Jia SH, Peng DT. N6-methyladenine-modified DNA was decreased in Alzheimer’s disease patients. World J Clin Cases 2022; 10:448-457. [PMID: 35097069 PMCID: PMC8771380 DOI: 10.12998/wjcc.v10.i2.448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/19/2021] [Accepted: 12/08/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In recent years, the prevalence of Alzheimer’s disease (AD) has increased, which places a great burden on society and families and creates considerable challenges for medical services. N6-methyladenine (m6A) deoxyribonucleic acid (DNA) adenine methylation is a novel biomarker and is abundant in the brain, but less common in AD. We support to analyze the relationship between DNA m6A and cognition in patients with AD and normal controls (NCs) in China.
AIM To analyze the relationship between the novel m6A DNA and cognition in patients with AD and NCs in China.
METHODS A total of 179 AD patients (mean age 71.60 ± 9.89 years; males: 91; females: 88) and 147 NCs (mean age 69.59 ± 11.22 years; males: 77; females: 70) who were age- and sex-matched were included in our study. All subjects underwent neuropsychological scale assessment and magnetic resonance imaging examination. Apolipoprotein E (APOE) genotypes were measured through agarose gel electrophoresis. Global m6A levels were evaluated by a MethylFlash m6A DNA Methylation ELISA Kit (colorimetric). Global m6A levels in total DNA from ten AD patients with 18F-AV-45 (florbetapir) positron emission tomography (PET) positivity and ten NCs with PET negativity were analyzed by dot blotting to determine the results.
RESULTS Our ELISA results showed that the global m6A DNA levels in peripheral blood were different between patients with AD and NCs (P = 0.002; < 0.05). And ten AD patients who were PET positive and ten NCs who were PET negative also showed the same results through dot blotting. There were significant differences between the two groups, which indicated that the leukocyte m6A DNA levels were different (P = 0.005; < 0.05). The m6A level was approximately 8.33% lower in AD patients than in NCs (mean 0.011 ± 0.006 vs 0.012 ± 0.005). A significant correlation was found between the Montreal Cognitive Assessment score and the peripheral blood m6A level in the tested population (r = 0.143, P = 0.01; < 0.05). However, no relationship was found with APOE ε4 (P = 0.633, > 0.05). Further studies should be performed to validate these findings.
CONCLUSION Our results show that reduced global m6A DNA methylation levels are significantly lower in AD patients than in NCs by approximately 8.33% in China.
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Affiliation(s)
- Shuang Lv
- Department of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Xiao Zhou
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
- Department of Neurology, Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Yi-Ming Li
- Department of Cardiovascular, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Tao Yang
- Department of Geriatric, The Fifth Medical Center of Chinese People's Liberation Army General Hospital, Beijing 100039, China
| | - Shu-Juan Zhang
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Yu Wang
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Shu-Hong Jia
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Dan-Tao Peng
- Department of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029, China
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
- Department of Neurology, Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100029, China
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