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Prasanth MI, Sivamaruthi BS, Cheong CSY, Verma K, Tencomnao T, Brimson JM, Prasansuklab A. Role of Epigenetic Modulation in Neurodegenerative Diseases: Implications of Phytochemical Interventions. Antioxidants (Basel) 2024; 13:606. [PMID: 38790711 PMCID: PMC11118909 DOI: 10.3390/antiox13050606] [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: 04/07/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Epigenetics defines changes in cell function without involving alterations in DNA sequence. Neuroepigenetics bridges neuroscience and epigenetics by regulating gene expression in the nervous system and its impact on brain function. With the increase in research in recent years, it was observed that alterations in the gene expression did not always originate from changes in the genetic sequence, which has led to understanding the role of epigenetics in neurodegenerative diseases (NDDs) including Alzheimer's disease (AD) and Parkinson's disease (PD). Epigenetic alterations contribute to the aberrant expression of genes involved in neuroinflammation, protein aggregation, and neuronal death. Natural phytochemicals have shown promise as potential therapeutic agents against NDDs because of their antioxidant, anti-inflammatory, and neuroprotective effects in cellular and animal models. For instance, resveratrol (grapes), curcumin (turmeric), and epigallocatechin gallate (EGCG; green tea) exhibit neuroprotective effects through their influence on DNA methylation patterns, histone acetylation, and non-coding RNA expression profiles. Phytochemicals also aid in slowing disease progression, preserving neuronal function, and enhancing cognitive and motor abilities. The present review focuses on various epigenetic modifications involved in the pathology of NDDs, including AD and PD, gene expression regulation related to epigenetic alterations, and the role of specific polyphenols in influencing epigenetic modifications in AD and PD.
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Affiliation(s)
- Mani Iyer Prasanth
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Bhagavathi Sundaram Sivamaruthi
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand;
- Innovation Center for Holistic Health, Nutraceuticals, and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Clerance Su Yee Cheong
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kanika Verma
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - James Michael Brimson
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Research, Innovation and International Affairs, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anchalee Prasansuklab
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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2
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Słowikowski B, Owecki W, Jeske J, Jezierski M, Draguła M, Goutor U, Jagodziński PP, Kozubski W, Dorszewska J. Epigenetics and the neurodegenerative process. Epigenomics 2024; 16:473-491. [PMID: 38511224 DOI: 10.2217/epi-2023-0416] [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: 03/22/2024] Open
Abstract
Neurological diseases are multifactorial, genetic and environmental. Environmental factors such as diet, physical activity and emotional state are epigenetic factors. Environmental markers are responsible for epigenetic modifications. The effect of epigenetic changes is increased inflammation of the nervous system and neuronal damage. In recent years, it has been shown that epigenetic changes may cause an increased risk of neurological disorders but, currently, the relationship between epigenetic modifications and neurodegeneration remains unclear. This review summarizes current knowledge about neurological disorders caused by epigenetic changes in diseases such as Alzheimer's disease, Parkinson's disease, stroke and epilepsy. Advances in epigenetic techniques may be key to understanding the epigenetics of central changes in neurological diseases.
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Affiliation(s)
- Bartosz Słowikowski
- Department of Biochemistry & Molecular Biology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Wojciech Owecki
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Jan Jeske
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Michał Jezierski
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Michał Draguła
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Ulyana Goutor
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Paweł P Jagodziński
- Department of Biochemistry & Molecular Biology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Wojciech Kozubski
- Chair & Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
| | - Jolanta Dorszewska
- Laboratory of Neurobiology, Department of Neurology, Poznan University of Medical Sciences, Poznan, 61-701, Poland
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Zhang Z, Wang R, Zhou H, Wu D, Cao Y, Zhang C, Sun H, Mu C, Hao Z, Ren H, Wang N, Yu S, Zhang J, Tao M, Wang C, Liu Y, Liu L, Liu Y, Zang J, Wang G. Inhibition of EHMT1/2 rescues synaptic damage and motor impairment in a PD mouse model. Cell Mol Life Sci 2024; 81:128. [PMID: 38472451 DOI: 10.1007/s00018-024-05176-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/16/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024]
Abstract
Epigenetic dysregulation that leads to alterations in gene expression and is suggested to be one of the key pathophysiological factors of Parkinson's disease (PD). Here, we found that α-synuclein preformed fibrils (PFFs) induced histone H3 dimethylation at lysine 9 (H3K9me2) and increased the euchromatic histone methyltransferases EHMT1 and EHMT2, which were accompanied by neuronal synaptic damage, including loss of synapses and diminished expression levels of synaptic-related proteins. Furthermore, the levels of H3K9me2 at promoters in genes that encode the synaptic-related proteins SNAP25, PSD95, Synapsin 1 and vGLUT1 were increased in primary neurons after PFF treatment, which suggests a linkage between H3K9 dimethylation and synaptic dysfunction. Inhibition of EHMT1/2 with the specific inhibitor A-366 or shRNA suppressed histone methylation and alleviated synaptic damage in primary neurons that were treated with PFFs. In addition, the synaptic damage and motor impairment in mice that were injected with PFFs were repressed by treatment with the EHMT1/2 inhibitor A-366. Thus, our findings reveal the role of histone H3 modification by EHMT1/2 in synaptic damage and motor impairment in a PFF animal model, suggesting the involvement of epigenetic dysregulation in PD pathogenesis.
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Affiliation(s)
- Zhixiong Zhang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Rui Wang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Hui Zhou
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Dan Wu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Yifan Cao
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Chuang Zhang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Hongyang Sun
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Chenchen Mu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Zongbing Hao
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Haigang Ren
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
- Jiangsu Provincial Medical Innovation Center of Trauma Medicine, Institute of Trauma Medicine, Soochow University, Suzhou, 215123, Jiangsu, China
- MOE Key Laboratory of Geriatric Diseases and Immunology, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Nana Wang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China
| | - Shuang Yu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China
| | - Jingzhong Zhang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China
| | - Mengdan Tao
- School of Pharmacy, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Can Wang
- School of Pharmacy, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Yan Liu
- School of Pharmacy, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Liu Liu
- Department of Pharmacy, The First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha, 410005, China
| | - Yanli Liu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Jianye Zang
- Hefei National Laboratory for Physical Sciences at Microscale CAS Center for Excellence in Biomacromolecules, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, Anhui, China
| | - Guanghui Wang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China.
- MOE Key Laboratory of Geriatric Diseases and Immunology, Soochow University, Suzhou, 215123, Jiangsu, China.
- Center of Translational Medicine, First People's Hospital of Taicang, Taicang Affiliated Hospital of Soochow University, Suzhou, 215400, China.
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Chen D, Wang J, Li Y, Xu C, Fanzheng M, Zhang P, Liu L. LncRNA NEAT1 suppresses cellular senescence in hepatocellular carcinoma via KIF11-dependent repression of CDKN2A. Clin Transl Med 2023; 13:e1418. [PMID: 37752791 PMCID: PMC10522973 DOI: 10.1002/ctm2.1418] [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: 04/18/2023] [Revised: 09/02/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide. Therapeutic options for advanced HCC are limited, which is due to a lack of full understanding of pathogenesis. Cellular senescence is a state of cell cycle arrest, which plays important roles in the pathogenesis of HCC. Mechanisms underlying hepatocellular senescence are not fully understood. LncRNA NEAT1 acts as an oncogene and contributes to the development of HCC. Whether NEAT1 modulates hepatocellular senescence in HCC is unknown. METHODS The role of NEAT1 and KIF11 in cellular senescence and tumor growth in HCC was assessed both in vitro and in vivo. RNA pulldown, mass spectrometry, Chromatin immunoprecipitation (ChIP), luciferase reporter assays, RNA FISH and immunofluorescence (IF) staining were used to explore the detailed molecular mechanism of NEAT1 and KIF11 in cellular senescence of HCC. RESULTS We found that NEAT1 was upregulated in tumor tissues and hepatoma cells, which negatively correlated with a senescence biomarker CDKN2A encoding p16INK4a and p14ARF proteins. NEAT1 was reduced in senescent hepatoma cells induced by doxorubicin (DOXO) or serum starvation. Furthermore, NEAT1 deficiency caused senescence in cultured hepatoma cells, and protected against the progression of HCC in a mouse model. During senescence, NEAT1 translocated into cytosol and interacted with a motor protein KIF11, resulting in KIF11 protein degradation and subsequent increased expression of CDKN2A in cultured hepatoma cells. Furthermore, KIF11 knockdown caused senescence in cultured hepatoma cells. Genetic deletion of Kif11 in hepatocytes inhibited the development of HCC in a mouse model. CONCLUSIONS Conclusively, NEAT1 overexpression reduces senescence and promotes tumor progression in HCC tissues and hepatoma cells, whereas NEAT1 deficiency causes senescence and inhibits tumor progression in HCC. This is associated with KIF11-dependent repression of CDKN2A. These findings lay the foundation to develop potential therapies for HCC by inhibiting NEAT1 and KIF11 or inducing senescence.
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Affiliation(s)
- Danlei Chen
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhuiChina
- Anhui Province Key Laboratory of Hepatopancreatobiliary SurgeryHefeiAnhuiChina
- Anhui Provincial Clinical Research Center for Hepatobiliary DiseasesHefeiAnhuiChina
| | - Jinghao Wang
- Zhejiang Cancer HospitalHangzhou Institute of MedicineChinese Academy of SciencesHangzhouZhejiangChina
| | - Yang Li
- Zhejiang Cancer HospitalHangzhou Institute of MedicineChinese Academy of SciencesHangzhouZhejiangChina
| | - Chenglin Xu
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhuiChina
| | - Meng Fanzheng
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhuiChina
- Anhui Province Key Laboratory of Hepatopancreatobiliary SurgeryHefeiAnhuiChina
- Anhui Provincial Clinical Research Center for Hepatobiliary DiseasesHefeiAnhuiChina
| | - Pengfei Zhang
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhuiChina
- Zhejiang Cancer HospitalHangzhou Institute of MedicineChinese Academy of SciencesHangzhouZhejiangChina
| | - Lianxin Liu
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhuiChina
- Anhui Province Key Laboratory of Hepatopancreatobiliary SurgeryHefeiAnhuiChina
- Anhui Provincial Clinical Research Center for Hepatobiliary DiseasesHefeiAnhuiChina
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5
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Zhang D, Zhang J, Wang Y, Wang G, Tang P, Liu Y, Zhang Y, Ouyang L. Targeting epigenetic modifications in Parkinson's disease therapy. Med Res Rev 2023; 43:1748-1777. [PMID: 37119043 DOI: 10.1002/med.21962] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 01/10/2023] [Accepted: 04/12/2023] [Indexed: 04/30/2023]
Abstract
Parkinson's disease (PD) is a multifactorial disease due to a complex interplay between genetic and epigenetic factors. Recent efforts shed new light on the epigenetic mechanisms involved in regulating pathways related to the development of PD, including DNA methylation, posttranslational modifications of histones, and the presence of microRNA (miRNA or miR). Epigenetic regulators are potential therapeutic targets for neurodegenerative disorders. In the review, we aim to summarize mechanisms of epigenetic regulation in PD, and describe how the DNA methyltransferases, histone deacetylases, and histone acetyltransferases that mediate the key processes of PD are attractive therapeutic targets. We discuss the use of inhibitors and/or activators of these regulators in PD models or patients, and how these small molecule epigenetic modulators elicit neuroprotective effects. Further more, given the importance of miRNAs in PD, their contributions to the underlying mechanisms of PD will be discussed as well, together with miRNA-based therapies.
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Affiliation(s)
- Dan Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Jifa Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Yuxi Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
- Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Guan Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Pan Tang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Yun Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Yiwen Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
| | - Liang Ouyang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy and Joint Research Institution of Altitude Health and National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Sichuan, Chengdu, China
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6
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Uppala SN, Tryphena KP, Naren P, Srivastava S, Singh SB, Khatri DK. Involvement of miRNA on Epigenetics landscape of Parkinson's disease: From pathogenesis to therapeutics. Mech Ageing Dev 2023:111826. [PMID: 37268278 DOI: 10.1016/j.mad.2023.111826] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 05/21/2023] [Accepted: 05/29/2023] [Indexed: 06/04/2023]
Abstract
The development of novel therapeutics for the effective management of Parkinson's disease (PD) is undertaken seriously by the scientific community as the burden of PD continues to increase. Several molecular pathways are being explored to identify novel therapeutic targets. Epigenetics is strongly implicated in several neurodegenerative diseases (NDDs) including PD. Several epigenetic mechanisms were found to dysregulated in various studies. These mechanisms are regulated by several miRNAs which are associated with a variety of pathogenic mechanisms in PD. This concept is extensively investigated in several cancers but not well documented in PD. Identifying the miRNAs with dual role i.e., regulation of epigenetic mechanisms as well as modulation of proteins implicated in the pathogenesis of PD could pave way for the development of novel therapeutics to target them. These miRNAs could also serve as potential biomarkers and can be useful in the early diagnosis or assessment of disease severity. In this article we would like to discuss about various epigenetic changes operating in PD and how miRNAs are involved in the regulation of these mechanisms and their potential to be novel therapeutic targets in PD.
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Affiliation(s)
- Sai Nikhil Uppala
- Molecular and cellular neuroscience lab, Department of pharmacology and toxicology, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037
| | - Kamatham Pushpa Tryphena
- Molecular and cellular neuroscience lab, Department of pharmacology and toxicology, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037
| | - Padmashri Naren
- Molecular and cellular neuroscience lab, Department of pharmacology and toxicology, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037
| | - Saurabh Srivastava
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037
| | - Shashi Bala Singh
- Molecular and cellular neuroscience lab, Department of pharmacology and toxicology, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037.
| | - Dharmendra Kumar Khatri
- Molecular and cellular neuroscience lab, Department of pharmacology and toxicology, National Institute of Pharmaceutical Education and Research (NIPER)- Hyderabad, Telangana-500037.
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7
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Zhang JN, Li Q, Yang F. Role of epigenetic modifications in Parkinson's disease. Epigenomics 2023; 15:573-576. [PMID: 37431571 DOI: 10.2217/epi-2023-0211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023] Open
Affiliation(s)
- Jian-Nan Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Qian Li
- Beijing Key Laboratory of Neural Regeneration & Repair, Capital Medical University, Beijing, 100069, China
- Department of Biochemistry & Molecular Biology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
- Beijing Key Laboratory of Cancer Invasion & Metastasis Research, Capital Medical University, Beijing, 100069, China
| | - Fei Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
- Beijing Key Laboratory of Neural Regeneration & Repair, Capital Medical University, Beijing, 100069, China
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8
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Kon T, Sasaki Y, Abe Y, Onozato Y, Yagi M, Mizumoto N, Sakai T, Umehara M, Ito M, Nakamura S, Goto H, Ueno Y. Modulation of AMPK/ TET2/ 5-hmC axis in response to metabolic alterations as a novel pathway for obesity-related colorectal cancer development. Sci Rep 2023; 13:2858. [PMID: 36806702 PMCID: PMC9938119 DOI: 10.1038/s41598-023-29958-2] [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: 06/27/2022] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Obesity is a major risk factor for colorectal cancer (CRC). Sustained hyperglycemia destabilizes tumor suppressor ten-eleven translocation (TET) 2, which is a substrate of AMPK, thereby dysregulating 5-hydroxymethylcytosine (5-hmC). However, the role played by this novel pathway in the development of obesity-related CRC is unclear. In this study, we aimed to evaluate the expression levels of TET2 and 5-hmC in obesity-related CRC and the effects of TET2 expression on the proliferation of CRC cells. To this end, surgically resected CRC samples from seven obese patients (Ob-CRC) and seven non-obese patients (nOb-CRC) were analyzed, and expression levels of the TET family and 5-hmC were compared between the groups. A decrease was observed in TET2 mRNA levels and 5-hmC levels in Ob-CRC compared to that in nOb-CRC. Furthermore, we used CRC cell lines to investigate the relationship between insulin, proliferation, and TET expression and AMPK. In cell lines, glucose and insulin treatments suppressed the expression of TET2 and increased cell proliferation. Downregulation of TET2 using siRNA also induced cell proliferation. An AMPK activator inhibited insulin- or glucose-stimulated cell proliferation and restored TET2 expression. We propose the AMPK-TET2-5-hmC axis as a novel pathway and potential therapeutic target in obesity-related CRC development.
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Affiliation(s)
- Takashi Kon
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Yu Sasaki
- Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan.
| | - Yasuhiko Abe
- grid.413006.00000 0004 7646 9307Division of Endoscopy, Yamagata University Hospital, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Yusuke Onozato
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Makoto Yagi
- grid.413006.00000 0004 7646 9307Division of Endoscopy, Yamagata University Hospital, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Naoko Mizumoto
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Takayuki Sakai
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Matsuki Umehara
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Minami Ito
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Shuhei Nakamura
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Hiroki Goto
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
| | - Yoshiyuki Ueno
- grid.268394.20000 0001 0674 7277Faculty of Medicine, Department of Gastroenterology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585 Japan
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9
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Dynamic Regulation of DNA Methylation and Brain Functions. BIOLOGY 2023; 12:biology12020152. [PMID: 36829430 PMCID: PMC9952911 DOI: 10.3390/biology12020152] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023]
Abstract
DNA cytosine methylation is a principal epigenetic mechanism underlying transcription during development and aging. Growing evidence suggests that DNA methylation plays a critical role in brain function, including neurogenesis, neuronal differentiation, synaptogenesis, learning, and memory. However, the mechanisms underlying aberrant DNA methylation in neurodegenerative diseases remain unclear. In this review, we provide an overview of the contribution of 5-methycytosine (5mC) and 5-hydroxylcytosine (5hmC) to brain development and aging, with a focus on the roles of dynamic 5mC and 5hmC changes in the pathogenesis of neurodegenerative diseases, particularly Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD). Identification of aberrant DNA methylation sites could provide potential candidates for epigenetic-based diagnostic and therapeutic strategies for neurodegenerative diseases.
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10
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Kong FC, Lang LQ, Hu J, Zhang XL, Zhong MK, Ma CL. A novel epigenetic marker, Ten-eleven translocation family member 2 (TET2), is identified in the intractable epileptic brain and regulates ATP binding cassette subfamily B member 1 (ABCB1) in the blood-brain barrier. Bioengineered 2022; 13:6638-6649. [PMID: 35235761 PMCID: PMC8974043 DOI: 10.1080/21655979.2022.2045838] [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] [Indexed: 12/27/2022] Open
Abstract
Drug-resistant epilepsy (DRE) is a chronic condition derived from spontaneous changes and regulatory effects in the epileptic brain. As demethylation factors, ten-eleven translocation (TET) family members have become a focus in recent studies of neurological disorders. Here, we quantified and localized TET1, TET2 and 5-hydroxymethylcytosine (5-hmC) in the temporal lobe cortex of DRE patients (n = 27) and traumatic brain hemorrhage controls (n = 10) by immunochemical staining. TET2 and ATP binding cassette subfamily B member 1 (ABCB1) expression patterns were determined in the isolated brain capillaries of DRE patients. TET2 expression was significantly increased in the temporal cortical tissue of DRE patients with or without hippocampal sclerosis (HS) compared to control patients, while TET1 and 5-hmC showed no differences in expression. We also found that a particularly strong expression of TET2 in the vascular tissue of DRE patients. ABCB1 and TET2 have evidently higher expression in the vascular endothelium from the neocortex of DRE patients. In blood–brain barrier (BBB) model, TET2 depletion can cause attenuated expression and function of ABCB1. Data from a cohort study and experiments in a BBB model suggest that TET2 has a specific regulatory effect on ABCB1, which may serve as a potential mechanism and target in DRE.
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Affiliation(s)
- Fan-Cheng Kong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Li-Qin Lang
- Department of Neurosurgery, Huashan Hospital at Fudan University, Shanghai, China
| | - Jie Hu
- Department of Neurosurgery, Huashan Hospital at Fudan University, Shanghai, China
| | - Xia-Ling Zhang
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
| | - Ming-Kang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Chun-Lai Ma
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
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11
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Sundaramoorthy TH, Castanho I. The Neuroepigenetic Landscape of Vertebrate and Invertebrate Models of Neurodegenerative Diseases. Epigenet Insights 2022; 15:25168657221135848. [PMID: 36353727 PMCID: PMC9638687 DOI: 10.1177/25168657221135848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
Vertebrate and invertebrate models of neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, have been paramount to our understanding of the pathophysiology of these conditions; however, the brain epigenetic landscape is less well established in these disease models. DNA methylation, histone modifications, and microRNAs are among commonly studied mechanisms of epigenetic regulation. Genome-wide studies and candidate studies of specific methylation marks, histone marks, and microRNAs have demonstrated the dysregulation of these mechanisms in models of neurodegenerative diseases; however, the studies to date are scarce and inconclusive and the implications of many of these changes are still not fully understood. In this review, we summarize epigenetic changes reported to date in the brain of vertebrate and invertebrate models used to study neurodegenerative diseases, specifically diseases affecting the aging population. We also discuss caveats of epigenetic research so far and the use of disease models to understand neurodegenerative diseases, with the aim of improving the use of model organisms in this context in future studies.
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Affiliation(s)
| | - Isabel Castanho
- University of Exeter Medical School,
University of Exeter, Exeter, UK
- Beth Israel Deaconess Medical Center,
Boston, MA, USA
- Harvard Medical School, Boston, MA,
USA
- Isabel Castanho, University of Exeter
Medical School, University of Exeter, Exeter, EX2 5DW, UK. Emails:
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12
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Qu W, Zhuang Y, Li X. The roles of epigenetic modifications in neurodegenerative diseases. Zhejiang Da Xue Xue Bao Yi Xue Ban 2021; 50:642-650. [PMID: 34986527 PMCID: PMC8732261 DOI: 10.3724/zdxbyxb-2021-0160] [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: 06/04/2021] [Accepted: 08/30/2021] [Indexed: 06/14/2023]
Abstract
In neuronal system, epigenetic modifications are essential for neuronal development, the fate determination of neural stem cells and neuronal function. The dysfunction of epigenetic regulation is closely related to occurrence and development of neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, Huntington's disease. Abnormally elevated DNA methylation inhibits the expression of some DNA repair-related genes and affects the progression of Huntington's disease. In the brain of Alzheimer's disease patients, the levels of H3K27ac and H3K9ac histone modifications increased. In addition, the alteration of RNA methylation in animal models of Alzheimer's disease and Parkinson's disease showed discrepancy trends. Therefore, epigenetic modifications may serve as potential therapeutic targets for neurodegenerative diseases. Here, we summarize the recent progress of the roles of epigenetic modifications in neurodegenerative diseases.
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Affiliation(s)
- Wenzheng Qu
- of Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Yingliang Zhuang
- of Translational Medicine, Zhejiang University, Hangzhou 310029, China
| | - Xuekun Li
- of Translational Medicine, Zhejiang University, Hangzhou 310029, China
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13
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Chen Z, Rasheed M, Deng Y. The epigenetic mechanisms involved in mitochondrial dysfunction: Implication for Parkinson's disease. Brain Pathol 2021; 32:e13012. [PMID: 34414627 PMCID: PMC9048811 DOI: 10.1111/bpa.13012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 06/21/2021] [Accepted: 07/27/2021] [Indexed: 12/18/2022] Open
Abstract
Mitochondrial dysfunction is one of the crucial factors involved in PD’s pathogenicity, which emerges from a combination of genetic and environmental factors. These factors cause differential molecular expression in neurons, such as varied transcriptional regulation of genes, elevated oxidative stress, α‐synuclein aggregation and endogenous neurotoxins release, which induces epigenetic modifications and triggers energy crisis by damaging mitochondria of the dopaminergic neurons (DN). So far, these events establish a complicated relationship with underlying mechanisms of mitochondrial anomalies in PD, which has remained unclear for years and made PD diagnosis and treatment extremely difficult. Therefore, in this review, we endeavored to discuss the complex association of epigenetic modifications and other associated vital factors in mitochondrial dysfunction. We propose a hypothesis that describes a vicious cycle in which mitochondrial dysfunction and oxidative stress act as a hub for regulating DA neuron's fate in PD. Oxidative stress triggers the release of endogenous neurotoxins (CTIQs) that lead to mitochondrial dysfunction along with abnormal α‐synuclein aggregation and epigenetic modifications. These disturbances further intensify oxidative stress and mitochondrial damage, amplifying the synthesis of CTIQs and works vice versa. This vicious cycle may result in the degeneration of DN to hallmark Parkinsonism. Furthermore, we have also highlighted various endogenous compounds and epigenetic marks (neurotoxic and neuroprotective), which may help for devising future diagnostic biomarkers and target specific drugs using novel PD management strategies.
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Affiliation(s)
- Zixuan Chen
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Madiha Rasheed
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Yulin Deng
- School of Life Science, Beijing Institute of Technology, Beijing, China
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14
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Chuang Y, Van I, Zhao Y, Xu Y. Icariin ameliorate Alzheimer's disease by influencing SIRT1 and inhibiting Aβ cascade pathogenesis. J Chem Neuroanat 2021; 117:102014. [PMID: 34407393 DOI: 10.1016/j.jchemneu.2021.102014] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 08/09/2021] [Accepted: 08/09/2021] [Indexed: 12/23/2022]
Abstract
Of all types of dementia, Alzheimer's disease is the type that has the highest proportion of cases and is the cause of substantial medical and economic burden. The mechanism of Alzheimer's disease is closely associated with the aggregation of amyloid-β protein and causes neurotoxicity and extracellular accumulation in the brain and to intracellular neurofibrillary tangles caused by tau protein hyperphosphorylation in the brain tissue. Previous studies have demonstrated that sirtuin1 downregulation is involved in the pathological mechanism of Alzheimer's disease. The decrease of sirtuin1 level would cause Alzheimer's disease by means of promoting the amyloidogenic pathway to generate amyloid-β species and thereby triggering amyloid-β cascade reaction, such as tau protein hyperphosphorylation, neuron autophagy, neuroinflammation, oxidative stress, and neuron apoptosis. Currently, there is no effective treatment for Alzheimer's disease, it is necessary to develop new treatment strategies. According to the theory of traditional Chinese medicine and based on the mechanism of the disease, tonifying the kidneys is one of the principles for the treatment of Alzheimer's disease and Epimedium is a well-known Chinese medicine for tonifying kidney. Therefore, investigating the influence of the components of Epimedium on the pathological characteristics of Alzheimer's disease may provide a reference for the treatment of Alzheimer's disease in the future. In this article, we summarise the effects and mechanism of icariin, the main ingredient extracted from Epimedium, in ameliorating Alzheimer's disease by regulating sirtuin1 to inhibit amyloid-β protein and improve other amyloid-β cascade pathogenesis.
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Affiliation(s)
- Yaochen Chuang
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, 999078, China; Kiang Wu Nursing College of Macau, Macao, 999078, China
| | - Iatkio Van
- Kiang Wu Nursing College of Macau, Macao, 999078, China.
| | - Yonghua Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078, China
| | - Youhua Xu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, 999078, China; State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, 999078, China.
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15
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Xu M, Zhu J, Liu XD, Luo MY, Xu NJ. Roles of physical exercise in neurodegeneration: reversal of epigenetic clock. Transl Neurodegener 2021; 10:30. [PMID: 34389067 PMCID: PMC8361623 DOI: 10.1186/s40035-021-00254-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 07/29/2021] [Indexed: 12/17/2022] Open
Abstract
The epigenetic clock is defined by the DNA methylation (DNAm) level and has been extensively applied to distinguish biological age from chronological age. Aging-related neurodegeneration is associated with epigenetic alteration, which determines the status of diseases. In recent years, extensive research has shown that physical exercise (PE) can affect the DNAm level, implying a reversal of the epigenetic clock in neurodegeneration. PE also regulates brain plasticity, neuroinflammation, and molecular signaling cascades associated with epigenetics. This review summarizes the effects of PE on neurodegenerative diseases via both general and disease-specific DNAm mechanisms, and discusses epigenetic modifications that alleviate the pathological symptoms of these diseases. This may lead to probing of the underpinnings of neurodegenerative disorders and provide valuable therapeutic references for cognitive and motor dysfunction.
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Affiliation(s)
- Miao Xu
- Department of Anatomy, Histology and Embryology, Kunming Medical University, Kunming, 650500, China.,Collaborative Innovation Center for Brain Science, Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - JiaYi Zhu
- Collaborative Innovation Center for Brain Science, Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Xian-Dong Liu
- Collaborative Innovation Center for Brain Science, Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.,Department of Neurology and Institute of Neurology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Ming-Ying Luo
- Department of Anatomy, Histology and Embryology, Kunming Medical University, Kunming, 650500, China
| | - Nan-Jie Xu
- Collaborative Innovation Center for Brain Science, Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China. .,Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China. .,Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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16
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Coppedè F. One-carbon epigenetics and redox biology of neurodegeneration. Free Radic Biol Med 2021; 170:19-33. [PMID: 33307166 DOI: 10.1016/j.freeradbiomed.2020.12.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022]
Abstract
One-carbon metabolism provides the methyl groups for both DNA and histone tail methylation reactions, two of the main epigenetic processes that tightly regulate the chromatin structure and gene expression levels. Several enzymes involved in one-carbon metabolism, as well as several epigenetic enzymes, are regulated by intracellular metabolites and redox cofactors, but their expression levels are in turn regulated by epigenetic modifications, in such a way that metabolism and gene expression reciprocally regulate each other to maintain homeostasis and regulate cell growth, survival, differentiation and response to environmental stimuli. Increasing evidence highlights the contribution of impaired one-carbon metabolism and epigenetic modifications in neurodegeneration. This article provides an overview of DNA and histone tail methylation changes in major neurodegenerative disorders, namely Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis, discussing the contribution of oxidative stress and impaired one-carbon and redox metabolism to their onset and progression.
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Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126, Pisa, Italy.
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17
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Wang R, Yao J, Gong F, Chen S, He Y, Hu C, Li C. miR-29c-3p regulates TET2 expression and inhibits autophagy process in Parkinson's disease models. Genes Cells 2021; 26:684-697. [PMID: 34086379 DOI: 10.1111/gtc.12877] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/15/2022]
Abstract
Autophagy in dopamine (DA) neurons is concerned to be associated with Parkinson's disease (PD), but the detailed mechanism remains unknown. Herein, we aimed to investigate the function of microRNA (miR)-29c-3p in autophagy in PD models. Intraperitoneal injection of MPTP (20 mg/kg) was given to C57BL/6 mice to establish PD mouse model. SH-SY5Y cells were treated with MPP+ (1 mmol/L) to establish in vitro PD model. The results indicated that in the substantia nigra pars compacta (SNpc) DA neurons of PD mice, autophagy was activated accompanied by down-regulated miR-29c-3p and up-regulated ten-eleven translocation 2 (TET2) expression. Up-regulation of miR-29c-3p inhibited TET2 expression and SNpc (including DA neurons) autophagy in PD mice. In vitro PD model confirmed that MPP+ treatment markedly down-regulated miR-29c-3p expression and up-regulated TET2 expression in SH-SY5Y cells in a dose/time-dependent manner. Moreover, miR-29c-3p up-regulation also inhibited autophagy and TET2 expression in vitro. Additionally, TET2 was proved to be targeted and down-regulated by miR-29c-3p. TET2 knockdown inhibited MPP+ -induced autophagy, whereas TET2 over-expression reversed the effects of miR-29c-3p over-expression on SH-SY5Y cell autophagy. Overall, miR-29c-3p over-expression inhibits autophagy in PD models, which may be mediated by TET2. Our finding may provide new insights for regulating autophagy to improve PD progression.
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Affiliation(s)
- Ruili Wang
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jie Yao
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fuhua Gong
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Songsheng Chen
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ya He
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chunting Hu
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chen Li
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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18
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Li X, Liu T, Wu TT, Feng Y, Peng SJ, Yin H, Wu YC. SIRT1 Deacetylates TET2 and Promotes Its Ubiquitination Degradation to Achieve Neuroprotection Against Parkinson's Disease. Front Neurol 2021; 12:652882. [PMID: 33935952 PMCID: PMC8082066 DOI: 10.3389/fneur.2021.652882] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/10/2021] [Indexed: 12/12/2022] Open
Abstract
The epigenetic modifications, such as DNA methylation and histone acetylation, play a critical role in the pathogenesis of Parkinson's disease (PD). However, the relationship between DNA methylation and histone acetylation in PD is not fully understood. Previous studies have shown that patients with PD exhibit an epigenetic and transcriptional upregulation of Ten-Eleven Translocation 2 (TET2), a member of the DNA hydroxylases family. Silence information regulator 1 (SIRT1), a nicotinamide adenine dinucleotide (NAD)-dependent histone deacetylase, also plays a critical role in PD development and might be a potential target for PD therapy. Our previous data indicated that demethylation in the Cyclin-dependent kinase inhibitor 2A (CDKN2A) promoter by the TET2 directly activated its expression, then promoted the cell cycle arrest and cell death induced by 1-methyl-4-phenyl-pyridinium ion (MPP+). In this study, we found that the enzyme activity of SIRT1 is negatively correlated with the protein level of TET2. In addition, the deacetylation of TET2 induced by SIRT1 promotes TET2 degradation via the ubiquitin–proteasome pathway. Furthermore, the activation of endogenous SIRT1 by resveratrol (RV) leads to CDKN2A DNA hypermethylation due to the decreased TET2 protein levels, which relieves the inhibitory effect on CDK4 and upregulation of pRb, allowing cell proliferation and growth. Similar effects are observed for the inhibition of endogenous TET2 enzyme activity with TET2 inhibitor. Together, we discover a new mechanism by which the SIRT1-TET2-CDKN2A pathway is involved in the pathogenesis of PD, which may provide a potential target for PD treatment.
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Affiliation(s)
- Xuan Li
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Te Liu
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ting-Ting Wu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya Feng
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Si-Jia Peng
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huiyong Yin
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, China.,Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing, China.,School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - Yun-Cheng Wu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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19
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Li L, Miao M, Chen J, Liu Z, Li W, Qiu Y, Xu S, Wang Q. Role of Ten eleven translocation-2 (Tet2) in modulating neuronal morphology and cognition in a mouse model of Alzheimer's disease. J Neurochem 2020; 157:993-1012. [PMID: 33165916 DOI: 10.1111/jnc.15234] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/31/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022]
Abstract
Abnormal expression of Ten eleven translocation-2 (Tet2) contributes to the pathogenesis of Alzheimer's disease (AD). However, to date, the role of Tet2 in modulating neuronal morphology upon amyloid-β (Aβ)-induced neurotoxicity has not been shown in a mouse model of AD. Here, we have developed a model of injured mouse hippocampal neurons induced by Aβ42 oligomers in vitro. We also investigated the role of Tet2 in injured neurons using recombinant plasmids-induced Tet2 inhibition or over-expression. We found that the reduced expression of Tet2 exacerbated neuronal damage, whereas the increased expression of Tet2 was sufficient to protect neurons against Aβ42 toxicity. Our results indicate that the brains of aged APPswe/PSEN1 double-transgenic (2 × Tg-AD) mice exhibit an increase in Aβ plaque accumulation and a decrease in Tet2 expression. As a result, we have also explored the underlying mechanisms of Tet2 in cognition and amyloid load in 2 × Tg-AD mice via adeno-associated virus-mediated Tet2 knockdown or over-expression. Recombinant adeno-associated virus was microinjected into bilateral dentate gyrus regions of the hippocampus of the mice. Knocking down Tet2 in young 2 × Tg-AD mice resulted in the same extent of cognitive dysfunction as aged 2 × Tg-AD mice. Importantly, in middle-aged 2 × Tg-AD mice, knocking down Tet2 accelerated the accumulation of Aβ plaques, whereas over-expressing Tet2 alleviated amyloid burden and memory loss. Furthermore, our hippocampal RNA-seq data, from young 2 × Tg-AD mice, were enriched with aberrantly expressed lncRNAs and miRNAs that are modulated by Tet2. Tet2-modulated lncRNAs (Malat1, Meg3, Sox2ot, Gm15477, Snhg1) and miRNAs (miR-764, miR-211, and miR-34a) may play a role in neuron formation. Overall, these results indicate that Tet2 may be a potential therapeutic target for repairing neuronal damage and cognitive impairment in AD.
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Affiliation(s)
- Liping Li
- Ningbo Key Laboratory of Behavioral Neuroscience, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China.,Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China
| | - Miao Miao
- Ningbo Key Laboratory of Behavioral Neuroscience, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China.,Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China
| | - Jiarui Chen
- College of Eco-Environmental Engineering, Qinghai University, Xining, Qinghai, PR China
| | - Zhitao Liu
- Faculty of Physical Education, Ningbo University, Ningbo, Zhejiang, PR China
| | - Wanyi Li
- Faculty of Physical Education, Ningbo University, Ningbo, Zhejiang, PR China
| | - Yisha Qiu
- Ningbo Key Laboratory of Behavioral Neuroscience, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China.,Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China
| | - Shujun Xu
- Ningbo Key Laboratory of Behavioral Neuroscience, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China.,Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China
| | - Qinwen Wang
- Ningbo Key Laboratory of Behavioral Neuroscience, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China.,Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang, PR China
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20
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Conboy K, Henshall DC, Brennan GP. Epigenetic principles underlying epileptogenesis and epilepsy syndromes. Neurobiol Dis 2020; 148:105179. [PMID: 33181318 DOI: 10.1016/j.nbd.2020.105179] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/21/2022] Open
Abstract
Epilepsy is a network disorder driven by fundamental changes in the function of the cells which compose these networks. Driving this aberrant cellular function are large scale changes in gene expression and gene expression regulation. Recent studies have revealed rapid and persistent changes in epigenetic control of gene expression as a critical regulator of the epileptic transcriptome. Epigenetic-mediated gene output regulates many aspects of cellular physiology including neuronal structure, neurotransmitter assembly and abundance, protein abundance of ion channels and other critical neuronal processes. Thus, understanding the contribution of epigenetic-mediated gene regulation could illuminate novel regulatory mechanisms which may form the basis of novel therapeutic approaches to treat epilepsy. In this review we discuss the effects of epileptogenic brain insults on epigenetic regulation of gene expression, recent efforts to target epigenetic processes to block epileptogenesis and the prospects of an epigenetic-based therapy for epilepsy, and finally we discuss technological advancements which have facilitated the interrogation of the epigenome.
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Affiliation(s)
- Karen Conboy
- Department of Physiology and Medical Physics, RCSI University of Medicine and Health Sciences, Dublin, Ireland; FutureNeuro, the SFI Research Centre for Chronic and Rare Neurological Diseases, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - David C Henshall
- Department of Physiology and Medical Physics, RCSI University of Medicine and Health Sciences, Dublin, Ireland; FutureNeuro, the SFI Research Centre for Chronic and Rare Neurological Diseases, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
| | - Gary P Brennan
- FutureNeuro, the SFI Research Centre for Chronic and Rare Neurological Diseases, RCSI University of Medicine and Health Sciences, Dublin, Ireland; School of Biomolecular and Biomedical Science, UCD Conway Institute, University College Dublin, Dublin, Ireland
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21
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Epigenomic analysis of Parkinson's disease neurons identifies Tet2 loss as neuroprotective. Nat Neurosci 2020; 23:1203-1214. [PMID: 32807949 DOI: 10.1038/s41593-020-0690-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 07/07/2020] [Indexed: 01/08/2023]
Abstract
Parkinson's disease (PD) pathogenesis may involve the epigenetic control of enhancers that modify neuronal functions. Here, we comprehensively examine DNA methylation at enhancers, genome-wide, in neurons of patients with PD and of control individuals. We find a widespread increase in cytosine modifications at enhancers in PD neurons, which is partly explained by elevated hydroxymethylation levels. In particular, patients with PD exhibit an epigenetic and transcriptional upregulation of TET2, a master-regulator of cytosine modification status. TET2 depletion in a neuronal cell model results in cytosine modification changes that are reciprocal to those observed in PD neurons. Moreover, Tet2 inactivation in mice fully prevents nigral dopaminergic neuronal loss induced by previous inflammation. Tet2 loss also attenuates transcriptional immune responses to an inflammatory trigger. Thus, widespread epigenetic dysregulation of enhancers in PD neurons may, in part, be mediated by increased TET2 expression. Decreased Tet2 activity is neuroprotective, in vivo, and may be a new therapeutic target for PD.
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