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Kaštelan S, Nikuševa-Martić T, Pašalić D, Antunica AG, Zimak DM. Genetic and Epigenetic Biomarkers Linking Alzheimer's Disease and Age-Related Macular Degeneration. Int J Mol Sci 2024; 25:7271. [PMID: 39000382 PMCID: PMC11242094 DOI: 10.3390/ijms25137271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 06/26/2024] [Accepted: 06/29/2024] [Indexed: 07/16/2024] Open
Abstract
Alzheimer's disease (AD) represents a prominent neurodegenerative disorder (NDD), accounting for the majority of dementia cases worldwide. In addition to memory deficits, individuals with AD also experience alterations in the visual system. As the retina is an extension of the central nervous system (CNS), the loss in retinal ganglion cells manifests clinically as decreased visual acuity, narrowed visual field, and reduced contrast sensitivity. Among the extensively studied retinal disorders, age-related macular degeneration (AMD) shares numerous aging processes and risk factors with NDDs such as cognitive impairment that occurs in AD. Histopathological investigations have revealed similarities in pathological deposits found in the retina and brain of patients with AD and AMD. Cellular aging processes demonstrate similar associations with organelles and signaling pathways in retinal and brain tissues. Despite these similarities, there are distinct genetic backgrounds underlying these diseases. This review comprehensively explores the genetic similarities and differences between AMD and AD. The purpose of this review is to discuss the parallels and differences between AMD and AD in terms of pathophysiology, genetics, and epigenetics.
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Affiliation(s)
- Snježana Kaštelan
- Department of Ophthalmology, Clinical Hospital Dubrava, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Tamara Nikuševa-Martić
- Department of Biology and Genetics, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Daria Pašalić
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
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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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3
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Neri S, Assirelli E, Manzetti M, Viroli G, Ialuna M, Traversari M, Ciaffi J, Ursini F, Faldini C, Ruffilli A. Identification of Epigenetic Biomarkers of Adolescent Idiopathic Scoliosis Progression: A Workflow to Assess Local Gene Expression. Int J Mol Sci 2024; 25:5329. [PMID: 38791368 PMCID: PMC11120692 DOI: 10.3390/ijms25105329] [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: 03/21/2024] [Revised: 04/30/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a three-dimensional structural deformity of the spine that affects 2-3% of adolescents under the age of 16. AIS etiopathogenesis is not completely understood; however, the disease phenotype is correlated to multiple genetic loci and results from genetic-environmental interactions. One of the primary, still unresolved issues is the implementation of reliable diagnostic and prognostic markers. For clinical management improvement, predictors of curve progression are particularly needed. Recently, an epigenetic contribution to AIS development and progression was proposed; nevertheless, validation of data obtained in peripheral tissues and identification of the specific mechanisms and genes under epigenetic control remain limited. In this study, we propose a methodological approach for the identification of epigenetic markers of AIS progression through an original workflow based on the preliminary characterization of local expression of candidate genes in tissues directly involved in the pathology. The feasibility of the proposed methodological protocol has been originally tested here in terms of identification of the putative epigenetic markers of AIS progression, collection of the different tissues, retrieval of an appropriate amount and quality of RNA and DNA, and identification of suitable reference genes.
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Affiliation(s)
- Simona Neri
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.A.); (J.C.); (F.U.)
| | - Elisa Assirelli
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.A.); (J.C.); (F.U.)
| | - Marco Manzetti
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy
| | - Giovanni Viroli
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy
| | - Marco Ialuna
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
| | - Matteo Traversari
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
| | - Jacopo Ciaffi
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.A.); (J.C.); (F.U.)
| | - Francesco Ursini
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.A.); (J.C.); (F.U.)
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy
| | - Cesare Faldini
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy
| | - Alberto Ruffilli
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (M.M.); (G.V.); (M.I.); (M.T.); (C.F.); (A.R.)
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy
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Guo Y, Chen N, Zhao M, Cao B, Zhu F, Guo C, Shi Y, Wang Q, Li Y, Zhang L. D-arabinose acts as antidepressant by activating the ACSS2-PPARγ/TFEB axis and CRTC1 transcription. Pharmacol Res 2024; 202:107136. [PMID: 38460778 DOI: 10.1016/j.phrs.2024.107136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024]
Abstract
CREB-regulated transcription coactivator 1 (CRTC1), a pivotal synaptonuclear messenger, regulates synaptic plasticity and transmission to prevent depression. Despite exhaustive investigations into CRTC1 mRNA reductions in the depressed mice, the regulatory mechanisms governing its transcription remain elusive. Consequently, exploring rapid but non-toxic CRTC1 inducers at the transcriptional level is important for resisting depression. Here, we demonstrate the potential of D-arabinose, a unique monosaccharide prevalent in edible-medicinal plants, to rapidly enter the brain and induce CRTC1 expression, thereby eliciting rapid-acting and persistent antidepressant responses in chronic restrain stress (CRS)-induced depressed mice. Mechanistically, D-arabinose induces the expressions of peroxisome proliferator-activated receptor gamma (PPARγ) and transcription factor EB (TFEB), thereby activating CRTC1 transcription. Notably, we elucidate the pivotal role of the acetyl-CoA synthetase short-chain family member 2 (ACSS2) as an obligatory mediator for PPARγ and TFEB to potentiate CRTC1 transcription. Furthermore, D-arabinose augments ACSS2-dependent CRTC1 transcription by activating AMPK through lysosomal AXIN-LKB1 pathway. Correspondingly, the hippocampal down-regulations of ACSS2, PPARγ or TFEB alone failed to reverse CRTC1 reductions in CRS-exposure mice, ultimately abolishing the anti-depressant efficacy of D-arabinose. In summary, our study unveils a previously unexplored role of D-arabinose in activating the ACSS2-PPARγ/TFEB-CRTC1 axis, presenting it as a promising avenue for the prevention and treatment of depression.
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Affiliation(s)
- Yaxin Guo
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Nuo Chen
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ming Zhao
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Baihui Cao
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Faliang Zhu
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chun Guo
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yongyu Shi
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qun Wang
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yan Li
- Department of Pathogen Biology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China.
| | - Lining Zhang
- Department of Immunology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, China.
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Wang Y, Du W, Sun Y, Zhang J, Ma C, Jin X. CRTC1 is a potential target to delay aging-induced cognitive deficit by protecting the integrity of the blood-brain barrier via inhibiting inflammation. J Cereb Blood Flow Metab 2023; 43:1042-1059. [PMID: 37086081 PMCID: PMC10291461 DOI: 10.1177/0271678x231169133] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 03/09/2023] [Accepted: 03/24/2023] [Indexed: 04/23/2023]
Abstract
Aging can cause attenuation in the functioning of multiple organs, and blood-brain barrier (BBB) breakdown could promote the occurrence of disorders of the central nervous system during aging. Since inflammation is considered to be an important factor underlying BBB injury during aging, vascular endothelial cell senescence serves as a critical pathological basis for the destruction of BBB integrity. In the current review, we have first introduced the concepts related to aging-induced cognitive deficit and BBB integrity damage. Thereafter, we reviewed the potential relationship between disruption of BBB integrity and cognition deficit and the role of inflammation, vascular endothelial cell senescence, and BBB injury. We have also briefly introduced the function of CREB-regulated transcription co-activator 1 (CRTC1) in cognition and aging-induced CRTC1 changes as well as the critical roles of CRTC1/cyclooxygenase-2 (COX-2) in regulating inflammation, endothelial cell senescence, and BBB injury. Finally, the underlying mechanisms have been summarized and we propose that CRTC1 could be a promising target to delay aging-induced cognitive deficit by protecting the integrity of BBB through promoting inhibition of inflammation-mediated endothelial cell senescence.
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Affiliation(s)
- Yanping Wang
- Department of Neurology, the Second Hospital of Jiaxing City, Jiaxing, China
| | - Weihong Du
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Yanyun Sun
- Institute of Neuroscience, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Junfang Zhang
- Department of Physiology, School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China
| | - Chaolin Ma
- School of Life Science and Institute of Life Science, Nanchang University, Nanchang, China
| | - Xinchun Jin
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
- Institute of Neuroscience, The Second Affiliated Hospital of Soochow University, Suzhou, China
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6
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Peng X, Zhang W, Cui W, Ding B, Lyu Q, Wang J. ADmeth: A Manually Curated Database for the Differential Methylation in Alzheimer's Disease. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2023; 20:843-851. [PMID: 35617175 DOI: 10.1109/tcbb.2022.3178087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease. More and more evidence show that DNA methylation is closely related to the pathological mechanism of AD. Many AD-associated differentially methylated genes, regions and CpG sites have been identified in recent researches, which may have great potential in clinical research. However, there is no dedicated database to collect AD-related differential methylation up to now. To provide a reference to researchers, we design a database named ADmeth by manually curating relevant articles, which contains a total of 16,709 AD-related differentially methylated items identified from different brain regions and different cell types in the blood, involving 209 genes, 2,229 regions and 14,271 CpG sites. The ADmeth database provides user-friendly pages to search, submit and download data. We hope that the ADmeth database can facilitate researchers to select candidate AD-associated methylation markers in revealing the pathological mechanism of AD and promote the cell-free DNA based non-invasive diagnosis of AD. The ADmeth database is available at http://www.biobdlab.cn/ADmeth.
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Zhao J, Huai J. Role of primary aging hallmarks in Alzheimer´s disease. Theranostics 2023; 13:197-230. [PMID: 36593969 PMCID: PMC9800733 DOI: 10.7150/thno.79535] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/15/2022] [Indexed: 12/03/2022] Open
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease, which severely threatens the health of the elderly and causes significant economic and social burdens. The causes of AD are complex and include heritable but mostly aging-related factors. The primary aging hallmarks include genomic instability, telomere wear, epigenetic changes, and loss of protein stability, which play a dominant role in the aging process. Although AD is closely associated with the aging process, the underlying mechanisms involved in AD pathogenesis have not been well characterized. This review summarizes the available literature about primary aging hallmarks and their roles in AD pathogenesis. By analyzing published literature, we attempted to uncover the possible mechanisms of aberrant epigenetic markers with related enzymes, transcription factors, and loss of proteostasis in AD. In particular, the importance of oxidative stress-induced DNA methylation and DNA methylation-directed histone modifications and proteostasis are highlighted. A molecular network of gene regulatory elements that undergoes a dynamic change with age may underlie age-dependent AD pathogenesis, and can be used as a new drug target to treat AD.
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Kaur G, Rathod SSS, Ghoneim MM, Alshehri S, Ahmad J, Mishra A, Alhakamy NA. DNA Methylation: A Promising Approach in Management of Alzheimer's Disease and Other Neurodegenerative Disorders. BIOLOGY 2022; 11:90. [PMID: 35053088 PMCID: PMC8773419 DOI: 10.3390/biology11010090] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 12/13/2022]
Abstract
DNA methylation, in the mammalian genome, is an epigenetic modification that involves the transfer of a methyl group on the C5 position of cytosine to derive 5-methylcytosine. The role of DNA methylation in the development of the nervous system and the progression of neurodegenerative diseases such as Alzheimer's disease has been an interesting research area. Furthermore, mutations altering DNA methylation affect neurodevelopmental functions and may cause the progression of several neurodegenerative diseases. Epigenetic modifications in neurodegenerative diseases are widely studied in different populations to uncover the plausible mechanisms contributing to the development and progression of the disease and detect novel biomarkers for early prognosis and future pharmacotherapeutic targets. In this manuscript, we summarize the association of DNA methylation with the pathogenesis of the most common neurodegenerative diseases, such as, Alzheimer's disease, Parkinson's disease, Huntington diseases, and amyotrophic lateral sclerosis, and discuss the potential of DNA methylation as a potential biomarker and therapeutic tool for neurogenerative diseases.
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Affiliation(s)
- Gagandeep Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India; (G.K.); (S.S.S.R.)
| | - Suraj Singh S. Rathod
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India; (G.K.); (S.S.S.R.)
| | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia;
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Javed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia;
| | - Awanish Mishra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)—Guwahati, Changsari, Kamrup 781101, Assam, India
| | - Nabil A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
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Yan H, Kanki H, Matsumura S, Kawano T, Nishiyama K, Sugiyama S, Takemori H, Mochizuki H, Sasaki T. MiRNA-132/212 regulates tight junction stabilization in blood-brain barrier after stroke. Cell Death Discov 2021; 7:380. [PMID: 34880207 PMCID: PMC8654926 DOI: 10.1038/s41420-021-00773-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 12/31/2022] Open
Abstract
MicroRNA-132/212 has been supposed as a critical gene related to the blood–brain barrier (BBB) protection after stroke, but its regulation pathway including the upstream regulator and downstream targets is still unclear. Herein, we demonstrated the cAMP response element-binding protein (CREB)-regulated transcription coactivator-1 (CRTC1) to be the upstream regulator of miRNA-132/212 using CRTC1 knockout and wild-type mice. CRTC1 deletion led to the reduction of miRNA-132/212 expression in mice brain after ischemic stroke, significantly increased infarct volume, and aggravated BBB permeability with worsening neurological deficits. Furthermore, we identified that miRNA-132 repressed Claudin-1, tight junction-associated protein-1 (TJAP-1), and RNA-binding Fox-1 (RBFox-1) by directly binding to their respective 3′-untranslated regions, which alleviated the ischemic damage by enhancing neuronal survival and BBB integrity. Moreover, the co-culture of endothelial cells with CRTC1-deficient neurons aggravated the cell vulnerability to hypoxia, also supporting the idea that miRNA-132/212 cluster is regulated by CRTC1 and acts as a crucial role in the mitigation of ischemic damage. This work is a step forward for understanding the role of miRNA-132/212 in neurovascular interaction and may be helpful for potential gene therapy of ischemic stroke.
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Affiliation(s)
- Haomin Yan
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hideaki Kanki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shigenobu Matsumura
- Laboratory of Nutrition Chemistry, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Tomohiro Kawano
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Kumiko Nishiyama
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shintaro Sugiyama
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Takemori
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan.
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10
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Wei X, Du P, Zhao Z. Impacts of DNA methylation on Tau protein related genes in the brains of patients with Alzheimer's disease. Neurosci Lett 2021; 763:136196. [PMID: 34437990 DOI: 10.1016/j.neulet.2021.136196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 08/09/2021] [Accepted: 08/20/2021] [Indexed: 01/01/2023]
Abstract
As the most common cause of dementia, Alzheimer's disease (AD) is progressively neurodegenerative disease. In the initial stage, Alzheimer's disease is related to the memory disorder, followed by a serious progressive decline in cognitive function, and finally died. Neurofibrillary tangles (NFTs) deposited in neurons form one of the histopathological features of AD. NFTs are composed of abnormally modified forms, such as hyperphosphorylation, of tau protein. DNA methylation on Tau protein related genes in the brains of AD patients plays an important role in AD pathogenesis. In this paper, the process and role of gene methylation in abnormal Tau modification and aggregation in the development of Alzheimer's disease were discussed. The effect of DNA methylation on tau protein in the brain of patients with Alzheimer's disease will help to find new targets in the development of drugs for treating Alzheimer's disease.
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Affiliation(s)
- Xieze Wei
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Baotou, Inner Mongolia, China; Xinxiang Central Hospital, China
| | | | - Zhiying Zhao
- Institute of Anesthesia, Department of Anatomy, Baotou Medical College, Baotou, Inner Mongolia, China.
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11
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Yan P, Xue Z, Li D, Ni S, Wang C, Jin X, Zhou D, Li X, Zhao X, Chen X, Cui W, Xu D, Zhou W, Zhang J. Dysregulated CRTC1-BDNF signaling pathway in the hippocampus contributes to Aβ oligomer-induced long-term synaptic plasticity and memory impairment. Exp Neurol 2021; 345:113812. [PMID: 34274327 DOI: 10.1016/j.expneurol.2021.113812] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 05/30/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022]
Abstract
Expression of CREB-regulated transcription coactivator 1 (CRTC1) in the hippocampus is impaired in Alzheimer's disease (AD). However, CRTC1 related mechanisms associated with long-term synaptic plasticity impairment and cognitive decline in the onset of AD are unknown. In this study, electrophysiological recordings indicated that lentivirus-mediated CRTC1 overexpression effectively ameliorates suppression of late-phase long-term potentiation (L-LTP) in rat hippocampal slices treated with oligomeric amyloid β(1-42) peptides (oAβ42) (200 nM). In addition, application of oAβ42 and genetic knockdown of CRTC1 by lentivirus-mediated CRTC1-shRNA inhibit L-LTP, whereas their combination does not further impair L-LTP. Brain-derived neurotrophic factor (BDNF), an important downstream protein confers protection of CRTC1 overexpression against oAβ42-induced L-LTP impairment as shown by administration of K252a (200 nM) and TrkB-FC (20 μg/ml). Furthermore, behavioral and western blotting analyses showed that CRTC1 overexpression reverses oAβ42-induced hippocampal-dependent cognitive deficits, downregulation of CRTC1 and BDNF expression. Notably, CRTC1-shRNA directly elicits cognitive deficits. In summary, these findings show that hippocampal CRTC1 signaling is affected by soluble oAβ, and CRTC1-BDNF pathway is involved in hippocampal L-LTP impairment and memory deficits induced by oAβ42.
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Affiliation(s)
- Peiyun Yan
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China
| | - Zhancheng Xue
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Dezhu Li
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Saiqi Ni
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Chuang Wang
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Xinchun Jin
- Department of Anatomy, Histology and Embrology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, 100069, China
| | | | - Xingxing Li
- Ningbo Kangning Hospital, Ningbo 315210, China
| | - Xin Zhao
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Xiaowei Chen
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Wei Cui
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Dingli Xu
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China
| | - Wenhua Zhou
- Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Ningbo Kangning Hospital, Ningbo 315210, China
| | - Junfang Zhang
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China.
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12
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Xiao X, Liu X, Jiao B. Epigenetics: Recent Advances and Its Role in the Treatment of Alzheimer's Disease. Front Neurol 2020; 11:538301. [PMID: 33178099 PMCID: PMC7594522 DOI: 10.3389/fneur.2020.538301] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 09/03/2020] [Indexed: 12/14/2022] Open
Abstract
Objective: This review summarizes recent findings on the epigenetics of Alzheimer's disease (AD) and provides therapeutic strategies for AD. Methods: We searched the following keywords: “genetics,” “epigenetics,” “Alzheimer's disease,” “DNA methylation,” “DNA hydroxymethylation,” “histone modifications,” “non-coding RNAs,” and “therapeutic strategies” in PubMed. Results: In this review, we summarizes recent studies of epigenetics in AD, including DNA methylation/hydroxymethylation, histone modifications, and non-coding RNAs. There are no consistent results of global DNA methylation/hydroxymethylation in AD. Epigenetic genome-wide association studies show that many differentially methylated sites exist in AD. Several studies investigate the role of histone modifications in AD; for example, histone acetylation decreases, whereas H3 phosphorylation increases significantly in AD. In addition, non-coding RNAs, such as microRNA-16 and BACE1-antisense transcript (BACE1-AS), are associated with the pathology of AD. These epigenetic changes provide us with novel insights into the pathogenesis of AD and may be potential therapeutic strategies for AD. Conclusion: Epigenetics is associated with the pathogenesis of AD, including DNA methylation/hydroxymethylation, histone modifications, and non-coding RNAs, which provide potential therapeutic strategies for AD.
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Affiliation(s)
- Xuewen Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xixi Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Jiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
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13
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Varderidou-Minasian S, Verheijen BM, Schätzle P, Hoogenraad CC, Pasterkamp RJ, Altelaar M. Deciphering the Proteome Dynamics during Development of Neurons Derived from Induced Pluripotent Stem Cells. J Proteome Res 2020; 19:2391-2403. [PMID: 32357013 PMCID: PMC7281779 DOI: 10.1021/acs.jproteome.0c00070] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Neuronal development is a complex
multistep process that shapes
neurons by progressing though several typical stages, including axon
outgrowth, dendrite formation, and synaptogenesis. Knowledge of the
mechanisms of neuronal development is mostly derived from the study
of animal models. Advances in stem cell technology now enable us to
generate neurons from human induced pluripotent stem cells (iPSCs).
Here we provide a mass spectrometry-based quantitative proteomic signature
of human iPSC-derived neurons, i.e., iPSC-derived induced glutamatergic
neurons and iPSC-derived motor neurons, throughout neuronal differentiation.
Tandem mass tag 10-plex labeling was carried out to perform proteomic
profiling of cells at different time points. Our analysis reveals
significant expression changes (FDR < 0.001) of several key proteins
during the differentiation process, e.g., proteins involved in the
Wnt and Notch signaling pathways. Overall, our data provide a rich
resource of information on protein expression during human iPSC neuron
differentiation.
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Affiliation(s)
- Suzy Varderidou-Minasian
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Bert M Verheijen
- Department of Translational Neuroscience, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Philipp Schätzle
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - R Jeroen Pasterkamp
- Department of Translational Neuroscience, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
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14
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Qin L, Xu Q, Li Z, Chen L, Li Y, Yang N, Liu Z, Guo J, Shen L, Allen EG, Chen C, Ma C, Wu H, Zhu X, Jin P, Tang B. Ethnicity-specific and overlapping alterations of brain hydroxymethylome in Alzheimer's disease. Hum Mol Genet 2020; 29:149-158. [PMID: 31814020 PMCID: PMC7001720 DOI: 10.1093/hmg/ddz273] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 01/06/2023] Open
Abstract
5-Methylcytosine (5mC), generated through the covalent addition of a methyl group to the fifth carbon of cytosine, is the most prevalent DNA modification in humans and functions as a critical player in the regulation of tissue and cell-specific gene expression. 5mC can be oxidized to 5-hydroxymethylcytosine (5hmC) by ten-eleven translocation (TET) enzymes, which is enriched in brain. Alzheimer's disease (AD) is the most common neurodegenerative disorder, and several studies using the samples collected from Caucasian cohorts have found that epigenetics, particularly cytosine methylation, could play a role in the etiological process of AD. However, little research has been conducted using the samples of other ethnic groups. Here we generated genome-wide profiles of both 5mC and 5hmC in human frontal cortex tissues from late-onset Chinese AD patients and cognitively normal controls. We identified both Chinese-specific and overlapping differentially hydroxymethylated regions (DhMRs) with Caucasian cohorts. Pathway analyses revealed specific pathways enriched among Chinese-specific DhMRs, as well as the shared DhMRs with Caucasian cohorts. Furthermore, two important transcription factor-binding motifs, hypoxia-inducible factor 2α (HIF2α) and hypoxia-inducible factor 1α (HIF1α), were enriched in the DhMRs. Our analyses provide the first genome-wide profiling of DNA hydroxymethylation of the frontal cortex of AD patients from China, emphasizing an important role of 5hmC in AD pathogenesis and highlighting both ethnicity-specific and overlapping changes of brain hydroxymethylome in AD.
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Affiliation(s)
- Lixia Qin
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qian Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- National Clinical Research Center for Geriatric Disorders (XIANGYA), Changsha, Hunan 410078, China
| | - Ziyi Li
- Department of Biostatistics and Bioinformatics, Emory University School of Public Health, Atlanta, GA 30322, USA
| | - Li Chen
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yujing Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Nannan Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zhenhua Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jifeng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- National Clinical Research Center for Geriatric Disorders (XIANGYA), Changsha, Hunan 410078, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, China
| | - Lu Shen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- National Clinical Research Center for Geriatric Disorders (XIANGYA), Changsha, Hunan 410078, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, China
| | - Emily G Allen
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Chao Chen
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, China
| | - Chao Ma
- Department of Human Anatomy, Histology and Embryology, Institute of Basic Medical Sciences, Neuroscience Center, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100000, China
| | - Hao Wu
- Department of Biostatistics and Bioinformatics, Emory University School of Public Health, Atlanta, GA 30322, USA
| | - Xiongwei Zhu
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Peng Jin
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- National Clinical Research Center for Geriatric Disorders (XIANGYA), Changsha, Hunan 410078, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, China
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15
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Parra-Damas A, Saura CA. Synapse-to-Nucleus Signaling in Neurodegenerative and Neuropsychiatric Disorders. Biol Psychiatry 2019; 86:87-96. [PMID: 30846302 DOI: 10.1016/j.biopsych.2019.01.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/18/2018] [Accepted: 01/04/2019] [Indexed: 01/07/2023]
Abstract
Synapse-to-nucleus signaling is critical for converting signals received at synapses into transcriptional programs essential for cognition, memory, and emotion. This neuronal mechanism usually involves activity-dependent translocation of synaptonuclear factors from synapses to the nucleus resulting in regulation of transcriptional programs underlying synaptic plasticity. Acting as synapse-to-nucleus messengers, amyloid precursor protein intracellular domain associated-1 protein, cAMP response element binding protein (CREB)-regulated transcription coactivator-1, Jacob, nuclear factor kappa-light-chain-enhancer of activated B cells, RING finger protein 10, and SH3 and multiple ankyrin repeat domains 3 play essential roles in synapse remodeling and plasticity, which are considered the cellular basis of memory. Other synaptic proteins, such as extracellular signal-regulated kinase, calcium/calmodulin-dependent protein kinase II gamma, and CREB2, translocate from dendrites or cytosol to the nucleus upon synaptic activity, suggesting that they could contribute to synapse-to-nucleus signaling. Notably, some synaptonuclear factors converge on the transcription factor CREB, indicating that CREB signaling is a key hub mediating integration of synaptic signals into transcriptional programs required for neuronal function and plasticity. Although major efforts have been focused on identification and regulatory mechanisms of synaptonuclear factors, the relevance of synapse-to-nucleus communication in brain physiology and pathology is still unclear. Recent evidence, however, indicates that synaptonuclear factors are implicated in neuropsychiatric, neurodevelopmental, and neurodegenerative disorders, suggesting that uncoupling synaptic activity from nuclear signaling may prompt synapse pathology, contributing to a broad spectrum of brain disorders. This review summarizes current knowledge of synapse-to-nucleus signaling in neuron survival, synaptic function and plasticity, and memory. Finally, we discuss how altered synapse-to-nucleus signaling may lead to memory and emotional disturbances, which is relevant for clinical and therapeutic strategies in neurodegenerative and neuropsychiatric diseases.
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Affiliation(s)
- Arnaldo Parra-Damas
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular, Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Carlos A Saura
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular, Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain.
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16
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Altuna M, Urdánoz-Casado A, Sánchez-Ruiz de Gordoa J, Zelaya MV, Labarga A, Lepesant JMJ, Roldán M, Blanco-Luquin I, Perdones Á, Larumbe R, Jericó I, Echavarri C, Méndez-López I, Di Stefano L, Mendioroz M. DNA methylation signature of human hippocampus in Alzheimer's disease is linked to neurogenesis. Clin Epigenetics 2019; 11:91. [PMID: 31217032 PMCID: PMC6585076 DOI: 10.1186/s13148-019-0672-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/25/2019] [Indexed: 12/22/2022] Open
Abstract
Background Drawing the epigenome landscape of Alzheimer’s disease (AD) still remains a challenge. To characterize the epigenetic molecular basis of the human hippocampus in AD, we profiled genome-wide DNA methylation levels in hippocampal samples from a cohort of pure AD patients and controls by using the Illumina 450K methylation arrays. Results Up to 118 AD-related differentially methylated positions (DMPs) were identified in the AD hippocampus, and extended mapping of specific regions was obtained by bisulfite cloning sequencing. AD-related DMPs were significantly correlated with phosphorylated tau burden. Functional analysis highlighted that AD-related DMPs were enriched in poised promoters that were not generally maintained in committed neural progenitor cells, as shown by ChiP-qPCR experiments. Interestingly, AD-related DMPs preferentially involved neurodevelopmental and neurogenesis-related genes. Finally, InterPro ontology analysis revealed enrichment in homeobox-containing transcription factors in the set of AD-related DMPs. Conclusions These results suggest that altered DNA methylation in the AD hippocampus occurs at specific regulatory regions crucial for neural differentiation supporting the notion that adult hippocampal neurogenesis may play a role in AD through epigenetic mechanisms. Graphical abstract ![]()
Electronic supplementary material The online version of this article (10.1186/s13148-019-0672-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Miren Altuna
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Amaya Urdánoz-Casado
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain
| | - Javier Sánchez-Ruiz de Gordoa
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - María V Zelaya
- Department of Pathology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Alberto Labarga
- Bioinformatics Unit, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Julie M J Lepesant
- Laboratoire de biologie cellulaire et moléculaire du contrôle de la prolifération (LBCMCP), Université Paul Sabatier, CNRS, Toulouse, France
| | - Miren Roldán
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain
| | - Idoia Blanco-Luquin
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain
| | - Álvaro Perdones
- Bioinformatics Unit, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Rosa Larumbe
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Ivonne Jericó
- Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Carmen Echavarri
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain
| | - Iván Méndez-López
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain.,Department of Internal Medicine, Hospital García-Orcoyen, Estella, Spain
| | - Luisa Di Stefano
- Laboratoire de biologie cellulaire et moléculaire du contrôle de la prolifération (LBCMCP), Université Paul Sabatier, CNRS, Toulouse, France
| | - Maite Mendioroz
- Neuroepigenetics Laboratory, Navarrabiomed, Public University of Navarre (UPNA), IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, 31008, Pamplona, Spain. .,Department of Neurology, Complejo Hospitalario de Navarra, IdiSNA (Navarra Institute for Health Research), Pamplona, Spain.
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17
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ArunSundar M, Shanmugarajan TS, Ravichandiran V. 3,4-Dihydroxyphenylethanol Assuages Cognitive Impulsivity in Alzheimer's Disease by Attuning HPA-Axis via Differential Crosstalk of α7 nAChR with MicroRNA-124 and HDAC6. ACS Chem Neurosci 2018; 9:2904-2916. [PMID: 29901389 DOI: 10.1021/acschemneuro.7b00532] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cognitive impulsivity, a form of suboptimal cost-benefit decision making, is an illustrious attribute of an array of neurodegenerative diseases including Alzheimer's disease (AD). In this study, a delay discounting paradigm was used to assess the effect of 3,4-dihydroxyphenylethanol (DOPET) on cognitive impulsivity, in an oA42i (oligomeric amyloid β1-42 plus ibotenic acid) induced AD mouse model, using a nonspatial T-maze task. The results depicted that oA42i administration elevated cognitive impulsivity, whereas DOPET treatment attenuated the impulsive behavior and matched the choice of the sham-operated controls. In addition, DOPET treatment has ameliorated the anxiety-like behavior in the oA42i-challenged mice. Probing the molecular signaling cascades underpinning these functional ramifications in the oA42i-challenged mice revealed reduced cholinergic (α7 nAChR; alpha 7 nicotinic acetylcholine receptor) function, dysregulated hypothalamic-pituitary-adrenal (HPA) axis (manifested by amplified glucocorticoid receptor expression and plasma corticosterone levels), and also aberrations in the neuroepigenetic (microRNA-124, HDAC6 (histone deacetylase 6), and HSP90 (heat-shock protein 90) expressions) as well as nucleocytoplasmic (importin-α1 expression and nuclear ultra-architecture) continuum. Nonetheless, DOPET administration ameliorated these perturbations and the observations were in line with that of the sham-operated mice. Further validation of the results with organotypic hippocampal slice cultures (OHSCs) confirmed the in vivo findings. We opine that HPA-axis attunement by DOPET might be orchestrated through the α7 nAChR-mediated pathway. Based on these outcomes, we posit that 3,4-dihydroxyphenylethanol might be a potential multimodal agent for the management of cognitive impulsivity and neuromolecular quagmire in AD.
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Affiliation(s)
- Mohanasundaram ArunSundar
- Department of Pharmacology, School of Pharmaceutical Sciences, Vels University (VISTAS), Pallavaram, Chennai-600117, India
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18
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Morhenn K, Quentin T, Wichmann H, Steinmetz M, Prondzynski M, Söhren KD, Christ T, Geertz B, Schröder S, Schöndube FA, Hasenfuss G, Schlossarek S, Zimmermann WH, Carrier L, Eschenhagen T, Cardinaux JR, Lutz S, Oetjen E. Mechanistic role of the CREB-regulated transcription coactivator 1 in cardiac hypertrophy. J Mol Cell Cardiol 2018; 127:31-43. [PMID: 30521840 DOI: 10.1016/j.yjmcc.2018.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/27/2018] [Accepted: 12/02/2018] [Indexed: 10/27/2022]
Abstract
The sympathetic nervous system is the main stimulator of cardiac function. While acute activation of the β-adrenoceptors exerts positive inotropic and lusitropic effects by increasing cAMP and Ca2+, chronically enhanced sympathetic tone with changed β-adrenergic signaling leads to alterations of gene expression and remodeling. The CREB-regulated transcription coactivator 1 (CRTC1) is activated by cAMP and Ca2+. In the present study, the regulation of CRTC1 in cardiomyocytes and its effect on cardiac function and growth was investigated. In cardiomyocytes, isoprenaline induced dephosphorylation, and thus activation of CRTC1, which was prevented by propranolol. Crtc1-deficient mice exhibited left ventricular dysfunction, hypertrophy and enlarged cardiomyocytes. However, isoprenaline-induced contractility of isolated trabeculae or phosphorylation of cardiac troponin I, cardiac myosin-binding protein C, phospholamban, and ryanodine receptor were not altered, suggesting that cardiac dysfunction was due to the global lack of Crtc1. The mRNA and protein levels of the Gαq GTPase activating protein regulator of G-protein signaling 2 (RGS2) were lower in hearts of Crtc1-deficient mice. Chromatin immunoprecipitation and reporter gene assays showed stimulation of the Rgs2 promoter by CRTC1. In Crtc1-deficient cardiomyocytes, phosphorylation of the Gαq-downstream kinase ERK was enhanced. CRTC1 content was higher in cardiac tissue from patients with aortic stenosis or hypertrophic cardiomyopathy and from two murine models mimicking these diseases. These data suggest that increased CRTC1 in maladaptive hypertrophy presents a compensatory mechanism to delay disease progression in part by enhancing Rgs2 gene transcription. Furthermore, the present study demonstrates an important role of CRTC1 in the regulation of cardiac function and growth.
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Affiliation(s)
- Karoline Morhenn
- Department of Clinical Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany
| | - Thomas Quentin
- Department of Clinical Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Helen Wichmann
- Department of Pediatric Cardiology and Intensive Medicine, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany
| | - Michael Steinmetz
- Department of Pediatric Cardiology and Intensive Medicine, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany; DZHK (German Center for Cardiovascular Research), Partner Site, Göttingen, Germany
| | - Maksymilian Prondzynski
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Klaus-Dieter Söhren
- Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Torsten Christ
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Birgit Geertz
- Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Sabine Schröder
- Department of Clinical Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Friedrich A Schöndube
- Department of Thoracic-Cardiac and Vascular Surgery, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany
| | - Gerd Hasenfuss
- DZHK (German Center for Cardiovascular Research), Partner Site, Göttingen, Germany; Department of Cardiology and Pneumology, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany
| | - Saskia Schlossarek
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Wolfram H Zimmermann
- DZHK (German Center for Cardiovascular Research), Partner Site, Göttingen, Germany; Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany
| | - Lucie Carrier
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Thomas Eschenhagen
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Department of Experimental Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience and Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, 1008 Prilly-Lausanne, Switzerland
| | - Susanne Lutz
- DZHK (German Center for Cardiovascular Research), Partner Site, Göttingen, Germany; Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Robert Koch Str. 40, 37075 Göttingen, Germany
| | - Elke Oetjen
- Department of Clinical Pharmacology and Toxicology, Cardiovascular Research Center, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Hamburg, Kiel, Lübeck, Germany; Institute of Pharmacy, University of Hamburg, Bundesstr. 45, 20146 Hamburg, Germany.
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19
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Stoccoro A, Coppedè F. Role of epigenetics in Alzheimer's disease pathogenesis. Neurodegener Dis Manag 2018; 8:181-193. [PMID: 29888987 DOI: 10.2217/nmt-2018-0004] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Advances in molecular biology technologies have allowed uncovering the role of epigenetic regulation in several complex diseases, such as cancer and neurodegenerative disorders. Although the role of epigenetic mechanisms in Alzheimer's disease is still little understood, recent findings clearly show that such mechanisms are dysregulated during disease progression, already in its early stages. However, it is not clear if the observed epigenetic changes represent a cause or a consequence of the disease. Promising results are emerging from studies performed in peripheral blood DNA that could provide early biomarkers of the pathology. Moreover, given the dynamic nature of the epigenetic marks, intense research is carried out to investigate the therapeutic efficacy of compounds exerting epigenetic properties.
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Affiliation(s)
- Andrea Stoccoro
- Department of Translational Research & New Technologies in Medicine & Surgery, Section of Medical Genetics, University of Pisa, Via Roma 55, 56126 Pisa, Italy.,Department of Medical Biotechnologies, Doctoral School in Genetics, Oncology & Clinical Medicine, University of Siena, Siena, Italy
| | - Fabio Coppedè
- Department of Translational Research & New Technologies in Medicine & Surgery, Section of Medical Genetics, University of Pisa, Via Roma 55, 56126 Pisa, Italy
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20
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Uchida S, Shumyatsky GP. Epigenetic regulation of Fgf1 transcription by CRTC1 and memory enhancement. Brain Res Bull 2018; 141:3-12. [PMID: 29477835 PMCID: PMC6128695 DOI: 10.1016/j.brainresbull.2018.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 01/30/2018] [Accepted: 02/20/2018] [Indexed: 01/06/2023]
Abstract
Recent evidence demonstrates that epigenetic regulation of gene transcription is critically involved in learning and memory. Here, we discuss the role of histone acetylation and DNA methylation, which are two best understood epigenetic processes in memory processes. More specifically, we focus on learning-strength-dependent changes in chromatin on the fibroblast growth factor 1 (Fgf1) gene and on the molecular events that modulate regulation of Fgf1 transcription, required for memory enhancement, with the specific focus on CREB-regulated transcription coactivator 1 (CRTC1).
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Affiliation(s)
- Shusaku Uchida
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Gleb P Shumyatsky
- Department of Genetics, Rutgers University, 145 Bevier Rd., Piscataway, NJ 08854, USA.
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21
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Gao WW, Tang HMV, Cheng Y, Chan CP, Chan CP, Jin DY. Suppression of gluconeogenic gene transcription by SIK1-induced ubiquitination and degradation of CRTC1. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1861:211-223. [PMID: 29408765 DOI: 10.1016/j.bbagrm.2018.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/23/2018] [Accepted: 01/29/2018] [Indexed: 12/21/2022]
Abstract
CRTCs are a group of three transcriptional coactivators required for CREB-dependent transcription. CREB and CRTCs are critically involved in the regulation of various biological processes such as cell proliferation, metabolism, learning and memory. However, whether CRTC1 efficiently induces gluconeogenic gene expression and how CRTC1 is regulated by upstream kinase SIK1 remain to be understood. In this work, we demonstrated SIK1-induced phosphorylation, ubiquitination and degradation of CRTC1 in the context of the regulation of gluconeogenesis. CRTC1 protein was destabilized by SIK1 but not SIK2 or SIK3. This effect was likely mediated by phosphorylation at S155, S167, S188 and S346 residues of CRTC1 followed by K48-linked polyubiquitination and proteasomal degradation. Expression of gluconeogenic genes such as that coding for phosphoenolpyruvate carboxykinase was stimulated by CRTC1, but suppressed by SIK1. Depletion of CRTC1 protein also blocked forskolin-induced gluconeogenic gene expression, knockdown or pharmaceutical inhibition of SIK1 had the opposite effect. Finally, SIK1-induced ubiquitination of CRTC1 was mediated by RFWD2 ubiquitin ligase at a site not equivalent to K628 in CRTC2. Taken together, our work reveals a regulatory circuit in which SIK1 suppresses gluconeogenic gene transcription by inducing ubiquitination and degradation of CRTC1. Our findings have implications in the development of new antihyperglycemic agents.
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Affiliation(s)
- Wei-Wei Gao
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hei-Man Vincent Tang
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yun Cheng
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Ching-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chi-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
| | - Dong-Yan Jin
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
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22
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Imm J, Kerrigan TL, Jeffries A, Lunnon K. Using induced pluripotent stem cells to explore genetic and epigenetic variation associated with Alzheimer's disease. Epigenomics 2017; 9:1455-1468. [DOI: 10.2217/epi-2017-0076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
It is thought that both genetic and epigenetic variation play a role in Alzheimer's disease initiation and progression. With the advent of somatic cell reprogramming into induced pluripotent stem cells it is now possible to generate patient-derived cells that are able to more accurately model and recapitulate disease. Furthermore, by combining this with recent advances in (epi)genome editing technologies, it is possible to begin to examine the functional consequence of previously nominated genetic variants and infer epigenetic causality from recently identified epigenetic variants. In this review, we explore the role of genetic and epigenetic variation in Alzheimer's disease and how the functional relevance of nominated loci can be investigated using induced pluripotent stem cells and (epi)genome editing techniques.
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Affiliation(s)
- Jennifer Imm
- Institute of Clinical and Biomedical Science, University of Exeter Medical School, Exeter University, Exeter, UK
| | - Talitha L Kerrigan
- Institute of Clinical and Biomedical Science, University of Exeter Medical School, Exeter University, Exeter, UK
| | - Aaron Jeffries
- Institute of Clinical and Biomedical Science, University of Exeter Medical School, Exeter University, Exeter, UK
| | - Katie Lunnon
- Institute of Clinical and Biomedical Science, University of Exeter Medical School, Exeter University, Exeter, UK
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23
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Saura CA, Cardinaux JR. Emerging Roles of CREB-Regulated Transcription Coactivators in Brain Physiology and Pathology. Trends Neurosci 2017; 40:720-733. [PMID: 29097017 DOI: 10.1016/j.tins.2017.10.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/27/2017] [Accepted: 10/05/2017] [Indexed: 12/11/2022]
Abstract
The brain has the ability to sense, coordinate, and respond to environmental changes through biological processes involving activity-dependent gene expression. cAMP-response element binding protein (CREB)-regulated transcription coactivators (CRTCs) have recently emerged as novel transcriptional regulators of essential biological functions, while their deregulation is linked to age-related human diseases. In the brain, CRTCs are unique signaling factors that act as sensors and integrators of hormonal, metabolic, and neural signals contributing to brain plasticity and brain-body communication. In this review, we focus on the regulatory mechanisms and functions of CRTCs in brain metabolism, lifespan, circadian rhythm, and synaptic mechanisms underlying memory and emotion. We also discuss how CRTCs deregulation in cognitive and emotional disorders may provide the basis for potential clinical and therapeutic applications in neurodegenerative and psychiatric diseases.
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Affiliation(s)
- Carlos A Saura
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular, Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CIBERNED), Universitat Autònoma de Barcelona, Barcelona, Spain.
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience and Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Switzerland.
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24
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Sharma M, Dierkes T, Sajikumar S. Epigenetic regulation by G9a/GLP complex ameliorates amyloid-beta 1-42 induced deficits in long-term plasticity and synaptic tagging/capture in hippocampal pyramidal neurons. Aging Cell 2017; 16:1062-1072. [PMID: 28665013 PMCID: PMC5595698 DOI: 10.1111/acel.12634] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2017] [Indexed: 12/11/2022] Open
Abstract
Altered epigenetic mechanisms are implicated in the cognitive decline associated with neurodegenerative diseases such as in Alzheimer's disease (AD). AD is the most prevalent form of dementia worldwide; amyloid plaques and neurofibrillary tangles are the histopathological hallmarks of AD. We have recently reported that the inhibition of G9a/GLP complex promotes long-term potentiation (LTP) and its associative mechanisms such as synaptic tagging and capture (STC). However, the role of this complex in plasticity impairments remains elusive. Here, we investigated the involvement of G9a/GLP complex in alleviating the effects of soluble Amyloid-β 1-42 oligomers (oAβ) on neuronal plasticity and associativity in the CA1 region of acute hippocampal slices from 5- to 7-week-old male Wistar rats. Our findings demonstrate that the regulation of G9a/GLP complex by inhibiting its catalytic activity reverses the amyloid-β oligomer-induced deficits in late-LTP and STC. This is achieved by releasing the transcription repression of the brain-derived neurotrophic factor (Bdnf) gene. The catalytic inhibition of G9a/GLP complex leads to the upregulation of Bdnf expression in the slices treated with oAβ. This further ensures the availability of BDNF that subsequently binds its receptor tyrosine kinase B (TrkB) and maintains the late-LTP. Furthermore, the capture of BDNF by weakly activated synapses re-establishes STC. Our findings regarding the reinstatement of functional plasticity and associativity in AD-like conditions provide the first evidence for the role of G9a/GLP complex in AD. We propose G9a/GLP complex as the possible target for preventing oAβ-induced plasticity deficits in hippocampal neurons.
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Affiliation(s)
- Mahima Sharma
- Department of Physiology; Yong Loo Lin School of Medicine; National University of Singapore; Block MD9, 2 Medical Drive Singapore 117 597 Singapore
- Neurobiology/Aging Program; Life Sciences Institute (LSI); National University of Singapore; #04-44, 28 Medical Drive Singapore 117 456 Singapore
| | - Tobias Dierkes
- Department of Physiology; Yong Loo Lin School of Medicine; National University of Singapore; Block MD9, 2 Medical Drive Singapore 117 597 Singapore
- Institute of Innate Immunity; Biomedical Centre; University hospital Bonn; Sigmund-Freud-Str. 25 Bonn 53127 Germany
- Division of Cellular Neurobiology; Zoological Institute; Technical University Braunschweig; Braunschweig Germany
| | - Sreedharan Sajikumar
- Department of Physiology; Yong Loo Lin School of Medicine; National University of Singapore; Block MD9, 2 Medical Drive Singapore 117 597 Singapore
- Neurobiology/Aging Program; Life Sciences Institute (LSI); National University of Singapore; #04-44, 28 Medical Drive Singapore 117 456 Singapore
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25
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Salvadores N, Sanhueza M, Manque P, Court FA. Axonal Degeneration during Aging and Its Functional Role in Neurodegenerative Disorders. Front Neurosci 2017; 11:451. [PMID: 28928628 PMCID: PMC5591337 DOI: 10.3389/fnins.2017.00451] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 07/25/2017] [Indexed: 12/11/2022] Open
Abstract
Aging constitutes the main risk factor for the development of neurodegenerative diseases. This represents a major health issue worldwide that is only expected to escalate due to the ever-increasing life expectancy of the population. Interestingly, axonal degeneration, which occurs at early stages of neurodegenerative disorders (ND) such as Alzheimer's disease, Amyotrophic lateral sclerosis, and Parkinson's disease, also takes place as a consequence of normal aging. Moreover, the alteration of several cellular processes such as proteostasis, response to cellular stress and mitochondrial homeostasis, which have been described to occur in the aging brain, can also contribute to axonal pathology. Compelling evidence indicate that the degeneration of axons precedes clinical symptoms in NDs and occurs before cell body loss, constituting an early event in the pathological process and providing a potential therapeutic target to treat neurodegeneration before neuronal cell death. Although, normal aging and the development of neurodegeneration are two processes that are closely linked, the molecular basis of the switch that triggers the transition from healthy aging to neurodegeneration remains unrevealed. In this review we discuss the potential role of axonal degeneration in this transition and provide a detailed overview of the literature and current advances in the molecular understanding of the cellular changes that occur during aging that promote axonal degeneration and then discuss this in the context of ND.
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Affiliation(s)
- Natalia Salvadores
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
| | - Mario Sanhueza
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
| | - Patricio Manque
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile
| | - Felipe A Court
- Center for Integrative Biology, Faculty of Sciences, Universidad MayorSantiago, Chile.,Fondap Geroscience Center for Brain Health and MetabolismSantiago, Chile
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26
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Yokoyama AS, Rutledge JC, Medici V. DNA methylation alterations in Alzheimer's disease. ENVIRONMENTAL EPIGENETICS 2017; 3:dvx008. [PMID: 29492310 PMCID: PMC5804548 DOI: 10.1093/eep/dvx008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/22/2017] [Accepted: 03/22/2017] [Indexed: 05/24/2023]
Abstract
The observation that Alzheimer's disease (AD) patients with similar and even identical genetic backgrounds often present with heterogeneous pathologies has prompted the hypothesis that epigenetics may contribute to AD. While the study of epigenetics encompasses a variety of modifications including histone modifications and non-coding RNAs, much of the research on how epigenetics might impact AD pathology has been focused on DNA methylation. To this end, several studies have characterized DNA methylation alterations in various brain regions of individuals with AD, with conflicting results. This review examines the results of studies analyzing both global and gene-specific DNA methylation changes in AD and also assesses the results of studies analyzing DNA hydroxymethylation in patients with AD.
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Affiliation(s)
- Amy S. Yokoyama
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
| | - John C. Rutledge
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
| | - Valentina Medici
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
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27
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Escoubas CC, Silva-García CG, Mair WB. Deregulation of CRTCs in Aging and Age-Related Disease Risk. Trends Genet 2017; 33:303-321. [PMID: 28365140 DOI: 10.1016/j.tig.2017.03.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/15/2022]
Abstract
Advances in public health in the past century have seen a sharp increase in human life expectancy. With these changes have come an increased prevalence of age-related pathologies and health burdens in the elderly. Patient age is the biggest risk factor for multiple chronic conditions that often occur simultaneously within a single individual. An alternative to disease-centric therapeutic approaches is that of 'geroscience', which aims to define molecular mechanisms that link age to overall disease risk. One such mechanism is deregulation of CREB-regulated transcriptional coactivators (CRTCs). Initially identified for their role in modulating CREB transcription, the past 5 years has seen an expansion in knowledge of new cellular regulators and roles of CRTCs beyond CREB. CRTCs have been shown to modulate organismal aging in Caenorhabditis elegans and to impact on age-related diseases in humans. We discuss CRTC deregulation as a new driver of aging that integrates the link between age and disease risk.
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Affiliation(s)
- Caroline C Escoubas
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
| | - Carlos G Silva-García
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA
| | - William B Mair
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA.
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28
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Wen KX, Miliç J, El-Khodor B, Dhana K, Nano J, Pulido T, Kraja B, Zaciragic A, Bramer WM, Troup J, Chowdhury R, Ikram MA, Dehghan A, Muka T, Franco OH. The Role of DNA Methylation and Histone Modifications in Neurodegenerative Diseases: A Systematic Review. PLoS One 2016; 11:e0167201. [PMID: 27973581 PMCID: PMC5156363 DOI: 10.1371/journal.pone.0167201] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 11/10/2016] [Indexed: 12/11/2022] Open
Abstract
IMPORTANCE Epigenetic modifications of the genome, such as DNA methylation and histone modifications, have been reported to play a role in neurodegenerative diseases (ND) such as Alzheimer's disease (AD) and Parkinson's disease (PD). OBJECTIVE To systematically review studies investigating epigenetic marks in AD or PD. METHODS Eleven bibliographic databases (Embase.com, Medline (Ovid), Web-of-Science, Scopus, PubMed, Cinahl (EBSCOhost), Cochrane Central, ProQuest, Lilacs, Scielo and Google Scholar) were searched until July 11th 2016 to identify relevant articles. We included all randomized controlled trials, cohort, case-control and cross-sectional studies in humans that examined associations between epigenetic marks and ND. Two independent reviewers, with a third reviewer available for disagreements, performed the abstract and full text selection. Data was extracted using a pre-designed data collection form. RESULTS Of 6,927 searched references, 73 unique case-control studies met our inclusion criteria. Overall, 11,453 individuals were included in this systematic review (2,640 AD and 2,368 PD outcomes). There was no consistent association between global DNA methylation pattern and any ND. Studies reported epigenetic regulation of 31 genes (including cell communication, apoptosis, and neurogenesis genes in blood and brain tissue) in relation to AD and PD. Methylation at the BDNF, SORBS3 and APP genes in AD were the most consistently reported associations. Methylation of α-synuclein gene (SNCA) was also found to be associated with PD. Seven studies reported histone protein alterations in AD and PD. CONCLUSION Many studies have investigated epigenetics and ND. Further research should include larger cohort or longitudinal studies, in order to identify clinically significant epigenetic changes. Identifying relevant epigenetic changes could lead to interventional strategies in ND.
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Affiliation(s)
- Ke-xin Wen
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Jelena Miliç
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Bassem El-Khodor
- Research and Development, Metagenics, Inc, United States of America
| | - Klodian Dhana
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Jana Nano
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Tammy Pulido
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Bledar Kraja
- Department of Biomedical Sciences, Faculty of Medicine, University of Medicine, Tirana, Albania
- University Clinic of Gastrohepatology, University Hospital Center Mother Teresa, Tirana, Albania
| | - Asija Zaciragic
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | | | - John Troup
- Research and Development, Metagenics, Inc, United States of America
| | - Rajiv Chowdhury
- Department of Public Health & Primary Care, Cardiovascular Epidemiology Unit, University of Cambridge, Cambridge, CB1 8RN, United Kingdom
| | - M. Arfam Ikram
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Abbas Dehghan
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Taulant Muka
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
| | - Oscar H. Franco
- Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
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