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Neuschäfer-Rube F, Schön T, Kahnt I, Püschel GP. LDL-Dependent Regulation of TNFα/PGE 2 Induced COX-2/mPGES-1 Expression in Human Macrophage Cell Lines. Inflammation 2023; 46:893-911. [PMID: 36598592 DOI: 10.1007/s10753-022-01778-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/14/2022] [Accepted: 12/22/2022] [Indexed: 01/05/2023]
Abstract
Inflammation is a hallmark in severe diseases such as atherosclerosis and non-alcohol-induced steatohepatitis (NASH). In the development of inflammation, prostaglandins, especially prostaglandin E2 (PGE2), are major players alongside with chemo- and cytokines, like tumor-necrosis-factor alpha (TNFα) and interleukin-1 beta (IL-1β). During inflammation, PGE2 synthesis can be increased by the transcriptional induction of the two key enzymes: cyclooxygenase 2 (COX-2), which converts arachidonic acid to PGH2, and microsomal prostaglandin E2 synthase 1 (mPGES-1), which synthesizes PGE2 from PGH2. Both COX-2 and mPGES-2 were induced by a dietary intervention where mice were fed a fatty acid-rich and, more importantly, cholesterol-rich diet, leading to the development of NASH. Since macrophages are the main source of PGE2 synthesis and cholesterol is predominantly transported as LDL, the regulation of COX-2 and mPGES-1 expression by native LDL was analyzed in human macrophage cell lines. THP-1 and U937 monocytes were differentiated into macrophages, through which TNFα and PGE-2 induced COX-2 and mPGES-1 expression by LDL could be analyzed on both mRNA and protein levels. In addition, the interaction of LDL- and EP receptor signal chains in COX-2/mPGES-1 expression and PGE2-synthesis were analyzed in more detail using EP receptor specific agonists. Furthermore, the LDL-mediated signal transduction in THP-1 macrophages was analyzed by measuring ERK and Akt phosphorylation as well as transcriptional regulation of transcription factor Egr-1. COX-2 and mPGES-1 were induced in both THP-1 and U937 macrophages by the combination of TNFα and PGE2. Surprisingly, LDL dose-dependently increased the expression of mPGES-1 but repressed the expression of COX-2 on mRNA and protein levels in both cell lines. The interaction of LDL and PGE2 signal chains in mPGES-1 induction as well as PGE2-synthesis could be mimicked by through simultaneous stimulation with EP2 and EP4 agonists. In THP-1 macrophages, LDL induced Akt-phosphorylation, which could be blocked by a PI3 kinase inhibitor. Alongside blocking Akt-phosphorylation, the PI3K inhibitor inhibited LDL-mediated mPGES-1 induction; however, it did not attenuate the repression of COX-2 expression. LDL repressed basal ERK phosphorylation and expression of downstream transcription factor Egr-1, which might lead to inhibition of COX-2 expression. These findings suggest that simultaneous stimulation with a combination of TNFα, PGE2, and native LDL-activated signal chains in macrophage cell lines leads to maximal mPGES-1 activity, as well repression of COX-2 expression, by activating PI3K as well as repression of ERK/Egr-1 signal chains.
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Affiliation(s)
- Frank Neuschäfer-Rube
- Institut Für Ernährungswissenschaft, Universität Potsdam, Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany.
| | - Theresa Schön
- Institut Für Ernährungswissenschaft, Universität Giessen, Wilhelmstr. 20, 35392, Gießen, Germany
| | - Ines Kahnt
- Institut Für Ernährungswissenschaft, Universität Potsdam, Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Gerhard Paul Püschel
- Institut Für Ernährungswissenschaft, Universität Potsdam, Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
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Rodríguez-Mejía LC, Romero-Estudillo I, Rivillas-Acevedo LA, French-Pacheco L, Silva-Martínez GA, Alvarado-Caudillo Y, Colín-Castelán D, Rodríguez-Ríos D, Wrobel K, Wrobel K, Lund G, Zaina S. The DNA Methyltransferase Inhibitor RG108 is Converted to Activator Following Conjugation with Short Peptides. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10390-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jung BC, Kang S. Epigenetic regulation of inflammatory factors in adipose tissue. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:159019. [PMID: 34332076 DOI: 10.1016/j.bbalip.2021.159019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/10/2021] [Accepted: 07/25/2021] [Indexed: 12/13/2022]
Abstract
Obesity is a strong risk factor for insulin resistance. Chronic low-grade tissue inflammation and systemic inflammation have been proposed as major mechanisms that promote insulin resistance in obesity. Adipose tissue has been recognized as a nexus between inflammation and metabolism, but how exactly inflammatory gene expression is orchestrated during the development of obesity is not well understood. Epigenetic modifications are defined as heritable changes in gene expression and cellular function without changes to the original DNA sequence. The major epigenetic mechanisms include DNA methylation, histone modification, noncoding RNAs, nucleopositioning/remodeling and chromatin reorganization. Epigenetic mechanisms provide a critical layer of gene regulation in response to environmental changes. Accumulating evidence supports that epigenetics plays a large role in the regulation of inflammatory genes in adipocytes and adipose-resident immune cell types. This review focuses on the association between adipose tissue inflammation in obesity and major epigenetic modifications.
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Affiliation(s)
- Byung Chul Jung
- Nutritional Sciences and Toxicology Department, University of California Berkeley, Berkeley, CA 94720, United States of America
| | - Sona Kang
- Nutritional Sciences and Toxicology Department, University of California Berkeley, Berkeley, CA 94720, United States of America.
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Xue Y, Guo Y, Luo S, Zhou W, Xiang J, Zhu Y, Xiang Z, Shen J. Aberrantly Methylated-Differentially Expressed Genes Identify Novel Atherosclerosis Risk Subtypes. Front Genet 2020; 11:569572. [PMID: 33381146 PMCID: PMC7767999 DOI: 10.3389/fgene.2020.569572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022] Open
Abstract
Increasing evidence has indicated that modulation of epigenetic mechanisms, especially methylation and long-non-coding RNA (lncRNA) regulation, plays a pivotal role in the process of atherosclerosis; however, few studies focused on revealing the epigenetic-related subgroups during atherosclerotic progression using unsupervised clustering analysis. Hence, we aimed to identify the epigenetics-related differentially expressed genes associated with atherosclerosis subtypes and characterize their clinical utility in atherosclerosis. Eighty samples with expression data (GSE40231) and 49 samples with methylation data (GSE46394) from a large artery plaque were downloaded from the GEO database, and aberrantly methylated-differentially expressed (AMDE) genes were identified based on the relationship between methylation and expression. Furthermore, we conducted weighted correlation network analysis (WGCNA) and co-expression analysis to identify the core AMDE genes strongly involved in atherosclerosis. K-means clustering was used to characterize two subtypes of atherosclerosis in GSE40231, and then 29 samples were recognized as validation dataset (GSE28829). In a blood sample cohort (GSE90074), chi-square test and logistic analysis were performed to explore the clinical implication of the K-means clusters. Furthermore, significance analysis of microarrays and prediction analysis of microarrays (PAM) were applied to identify the signature AMDE genes. Moreover, the classification performance of signature AMDE gene-based classifier from PAM was validated in another blood sample cohort (GSE34822). A total of 1,569 AMDE mRNAs and eight AMDE long non-coding RNAs (lncRNAs) were identified by differential analysis. Through the WGCNA and co-expression analysis, 32 AMDE mRNAs and seven AMDE lncRNAs were identified as the core genes involved in atherosclerosis development. Functional analysis revealed that AMDE genes were strongly related to inflammation and axon guidance. In the clinical analysis, the atherosclerotic subtypes were associated with the severity of coronary artery disease and risk of adverse events. Eight genes, including PARP15, SERGEF, PDGFD, MRPL45, UBR1, STAU1, WIZ, and LSM4, were selected as the signature AMDE genes that most significantly differentiated between atherosclerotic subtypes. Ultimately, the area under the curve of signature AMDE gene-based classifier for atherosclerotic subtypes was 0.858 and 0.812 in GSE90074 and GSE34822, respectively. This study identified the AMDE genes (lncRNAs and mRNAs) that could be implemented in clinical clustering to recognize high-risk atherosclerotic patients.
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Affiliation(s)
- Yuzhou Xue
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yongzheng Guo
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Suxin Luo
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Zhou
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Xiang
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuansong Zhu
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhenxian Xiang
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jian Shen
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Płatek T, Polus A, Góralska J, Raźny U, Gruca A, Kieć-Wilk B, Zabielski P, Kapusta M, Słowińska-Solnica K, Solnica B, Malczewska-Malec M, Dembińska-Kieć A. DNA methylation microarrays identify epigenetically regulated lipid related genes in obese patients with hypercholesterolemia. Mol Med 2020; 26:93. [PMID: 33028190 PMCID: PMC7539457 DOI: 10.1186/s10020-020-00220-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/29/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Epigenetics can contribute to lipid disorders in obesity. The DNA methylation pattern can be the cause or consequence of high blood lipids. The aim of the study was to investigate the DNA methylation profile in peripheral leukocytes associated with elevated LDL-cholesterol level in overweight and obese individuals. METHODS To identify the differentially methylated genes, genome-wide DNA methylation microarray analysis was performed in leukocytes of obese individuals with high LDL-cholesterol (LDL-CH, ≥ 3.4 mmol/L) versus control obese individuals with LDL-CH, < 3.4 mmol/L. Biochemical tests such as serum glucose, total cholesterol, HDL cholesterol, triglycerides, insulin, leptin, adiponectin, FGF19, FGF21, GIP and total plasma fatty acids content have been determined. Oral glucose and lipid tolerance tests were also performed. Human DNA Methylation Microarray (from Agilent Technologies) containing 27,627 probes for CpG islands was used for screening of DNA methylation status in 10 selected samples. Unpaired t-test and Mann-Whitney U-test were used for biochemical and anthropometric parameters statistics. For microarrays analysis, fold of change was calculated comparing hypercholesterolemic vs control group. The q-value threshold was calculated using moderated Student's t-test followed by Benjamini-Hochberg multiple test correction FDR. RESULTS In this preliminary study we identified 190 lipid related CpG loci differentially methylated in hypercholesterolemic versus control individuals. Analysis of DNA methylation profiles revealed several loci engaged in plasma lipoprotein formation and metabolism, cholesterol efflux and reverse transport, triglycerides degradation and fatty acids transport and β-oxidation. Hypermethylation of CpG loci located in promoters of genes regulating cholesterol metabolism: PCSK9, LRP1, ABCG1, ANGPTL4, SREBF1 and NR1H2 in hypercholesterolemic patients has been found. Novel epigenetically regulated CpG sites include ABCG4, ANGPTL4, AP2A2, AP2M1, AP2S1, CLTC, FGF19, FGF1R, HDLBP, LIPA, LMF1, LRP5, LSR, NR1H2 and ZDHHC8 genes. CONCLUSIONS Our results indicate that obese individuals with hypercholesterolemia present specific DNA methylation profile in genes related to lipids transport and metabolism. Detailed knowledge of epigenetic regulation of genes, important for lipid disorders in obesity, underlies the possibility to influence target genes by changing diet and lifestyle, as DNA methylation is reversible and depends on environmental factors. These findings give rise for further studies on factors that targets methylation of revealed genes.
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Affiliation(s)
- Teresa Płatek
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland.
| | - Anna Polus
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Joanna Góralska
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Urszula Raźny
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Anna Gruca
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Beata Kieć-Wilk
- Department of Metabolic Diseases, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
- Department of Metabolic Diseases, University Hospital in Krakow, Jakubowskiego 2, 30-688, Kraków, Poland
| | - Piotr Zabielski
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2C, 15-222, Białystok, Poland
| | - Maria Kapusta
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Krystyna Słowińska-Solnica
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Bogdan Solnica
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Małgorzata Malczewska-Malec
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
| | - Aldona Dembińska-Kieć
- Department of Clinical Biochemistry, Jagiellonian University Medical College, Kopernika 15a, 31-501, Kraków, Poland
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de la Rocha C, Zaina S, Lund G. Is Any Cardiovascular Disease-Specific DNA Methylation Biomarker Within Reach? Curr Atheroscler Rep 2020; 22:62. [DOI: 10.1007/s11883-020-00875-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Pérez-Mojica JE, Lillycrop KA, Cooper C, Calder PC, Burdge GC. Docosahexaenoic acid and oleic acid induce altered DNA methylation of individual CpG loci in Jurkat T cells. Prostaglandins Leukot Essent Fatty Acids 2020; 158:102128. [PMID: 32464433 DOI: 10.1016/j.plefa.2020.102128] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/30/2020] [Accepted: 05/07/2020] [Indexed: 12/27/2022]
Abstract
Docosahexaenoic acid (DHA, 22:6n-3) and oleic acid (18:1n-9) can alter the DNA methylation of individual CpG loci in vivo and in vitro, although the targeting mechanism is unknown. We tested the hypothesis that the targeting of altered methylation is associated with putative transcription factor response elements (pTREs) proximal to modified loci. Jurkat cells were treated with 22:6n-3 or 18:1n-9 (both 15 μM) for eight days and DNA methylation measured using the MethylationEPIC 850K array. 1596 CpG loci were altered significantly (508 hypermethylated) by 22:6n-3 and 563 CpG loci (294 hypermethylated) by 18:1n-9. 78 loci were modified by both fatty acids. Induced differential methylation was not modified by the PPARα antagonist GW6471. DNA sequences proximal to differentially methylated CpG loci were enriched in zinc-finger pTREs. These findings suggest that zinc-finger-containing transcription factors may be involved in targeting altered DNA methylation modifying processes induced by fatty acids to individual CpG loci.
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Affiliation(s)
- J Eduardo Pérez-Mojica
- School of Human Development and Health, Faculty of Medicine, Institute of Developmental Sciences Building (MP887), University of Southampton, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK
| | - Karen A Lillycrop
- Centre for Biological Science, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton, UK
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Philip C Calder
- School of Human Development and Health, Faculty of Medicine, Institute of Developmental Sciences Building (MP887), University of Southampton, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK
| | - Graham C Burdge
- School of Human Development and Health, Faculty of Medicine, Institute of Developmental Sciences Building (MP887), University of Southampton, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK.
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Gorabi AM, Penson PE, Banach M, Motallebnezhad M, Jamialahmadi T, Sahebkar A. Epigenetic control of atherosclerosis via DNA methylation: A new therapeutic target? Life Sci 2020; 253:117682. [PMID: 32387418 DOI: 10.1016/j.lfs.2020.117682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 04/01/2020] [Accepted: 04/15/2020] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is a disease in which lipid-laden plaques are developed inside the vessel walls of arteries. The immune system is activated, resulting in inflammation and oxidative stress. Endothelial cells (ECs) are activated, arterial smooth muscle cells (SMCs) proliferate, macrophages are activated, and foam cells are developed, leading to dysfunctional ECs. Epigenetic regulatory mechanisms, including DNA methylation, histone modifications, and microRNAs are involved in the modulation of genes that play distinct roles in several aspects of cell biology and physiology, hence linking environmental stimuli to gene regulation. Recent research has investigated the involvement of DNA methylation in the etiopathogenesis of atherosclerosis, and several studies have documented the role of this mechanism in various aspects of the disease. Regulation of DNA methylation plays a critical role in the integrity of ECs, SMC proliferation and formation of atherosclerotic lesions. In this review, we seek to clarify the role of DNA methylation in the development of atherosclerosis through different mechanisms.
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Affiliation(s)
- Armita Mahdavi Gorabi
- Research Center for Advanced Technologies in Cardiovascular Medicine, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Peter E Penson
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Maciej Banach
- Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, Lodz, Poland; Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
| | - Morteza Motallebnezhad
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Tannaz Jamialahmadi
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Nutritional Factors Modulating Alu Methylation in an Italian Sample from The Mark-Age Study Including Offspring of Healthy Nonagenarians. Nutrients 2019; 11:nu11122986. [PMID: 31817660 PMCID: PMC6950565 DOI: 10.3390/nu11122986] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/11/2019] [Accepted: 11/29/2019] [Indexed: 12/11/2022] Open
Abstract
Alu hypomethylation promotes genomic instability and is associated with aging and age-related diseases. Dietary factors affect global DNA methylation, leading to changes in genomic stability and gene expression with an impact on longevity and the risk of disease. This preliminary study aims to investigate the relationship between nutritional factors, such as circulating trace elements, lipids and antioxidants, and Alu methylation in elderly subjects and offspring of healthy nonagenarians. Alu DNA methylation was analyzed in sixty RASIG (randomly recruited age-stratified individuals from the general population) and thirty-two GO (GeHA offspring) enrolled in Italy in the framework of the MARK-AGE project. Factor analysis revealed a different clustering between Alu CpG1 and the other CpG sites. RASIG over 65 years showed lower Alu CpG1 methylation than those of GO subjects in the same age class. Moreover, Alu CpG1 methylation was associated with fruit and whole-grain bread consumption, LDL2-Cholesterol and plasma copper. The preserved Alu methylation status in GO, suggests Alu epigenetic changes as a potential marker of aging. Our preliminary investigation shows that Alu methylation may be affected by food rich in fibers and antioxidants, or circulating LDL subfractions and plasma copper.
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Colín-Castelán D, Zaina S. Associations between atherosclerosis and neurological diseases, beyond ischemia-induced cerebral damage. Rev Endocr Metab Disord 2019; 20:15-25. [PMID: 30891682 DOI: 10.1007/s11154-019-09486-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Neurodegeneration is traditionally viewed as a consequence of peptide accumulation in the brain, stroke and/or cerebral ischemia. Nonetheless, a number of scattered observations suggest that neurological disease and atherosclerosis may be linked by more complex mechanisms. Understanding the intricate link between atherosclerosis and neurological conditions may have a significant impact on the quality of life of the growing ageing population and of high cardiovascular risk groups in general. Epidemiological data support the notion that neurological dysfunction and atherosclerosis coexist long before any evident clinical complications of cardiovascular disease appear and may be causally linked. Baffling, often overlooked, molecular data suggest that nervous tissue-specific gene expression is relaxed specifically in the atheromatous vascular wall, and/or that a systemic dysregulation of genes involved in nervous system biology dictates a concomitant progression of neurological disease and atherosclerosis. Further epidemiological and experimental work is needed to clarify the details and clinical relevance of those complex links.
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Affiliation(s)
- Dannia Colín-Castelán
- Department of Medical Sciences, Division of Health Sciences, Campus León, University of Guanajuato, León, Guanajuato, Mexico.
| | - Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, Campus León, University of Guanajuato, León, Guanajuato, Mexico
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11
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Moradi Sarabi M, Zahedi SA, Pajouhi N, Khosravi P, Bagheri S, Ahmadvand H, Shahryarhesami S. The effects of dietary polyunsaturated fatty acids on miR-126 promoter DNA methylation status and VEGF protein expression in the colorectal cancer cells. GENES AND NUTRITION 2018; 13:32. [PMID: 30598703 PMCID: PMC6299631 DOI: 10.1186/s12263-018-0623-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/29/2018] [Indexed: 02/06/2023]
Abstract
Background There is increasing evidence indicating an aberrant expression of miRNAs in colorectal cancer (CRC) development. Growing evidence has suggested that polyunsaturated fatty acids (PUFAs) could modulate the remodeling of the epigenome. No study has yet been published to examine the direct effect of PUFA on the promoter methylation of miRNAs. This study aimed to examine the potential clinical application of PUFA on the promoter DNA methylation of miR-126 and its angiogenic target molecule (VEGF) in the CRC cells. Methods We investigated the direct effect of 100 μM EPA, DHA, and LA for 24 h on promoter methylation status of miR-126 in a panel of five CRC cell lines (HCT116, HT29/219, Caco2, SW742, and LS180) by methylation-specific PCR (MSP). We also quantified the miR-126 and VEGF transcript expression levels in five CRC cell lines affected by PUFA by real-time PCR. Moreover, we analyzed the protein expression level of VEGF, as a target of miR-126, by western blotting assay. Results MSP analysis showed extensive DNA methylation of the miR-126 promoter in all five CRC cell lines, and among all three PUFAs, only DHA completely demethylated the promoter of miR-126 in HCT116 and Caco2 cell lines. We found that only DHA significantly induces the expression level of miR-126 in HCT116 and Caco2 cell lines, respectively, by 20.1-fold and 1.68-fold (p < 0.05). Our finding indicates that the downregulation of VEGF protein level is also effectively observed only in DHA-treated HCT116 and Caco2 cells compared to control cells (p < 0.05). Conclusions Our results provide evidence that n-3 PUFAs are able to modulate cellular miR-126 DNA methylation and inhibit VEGF expression level in a cell-type specific manner in colorectal cancer cells. DHA always showed higher efficacy than EPA and LA in our experiment. Overall, our results suggest a potential clinical application of n-3 PUFAs as anti-angiogenic agents in CRC therapy.
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Affiliation(s)
- Mostafa Moradi Sarabi
- 1Department of Biochemistry and Genetics, Lorestan University of Medical Sciences, School of Medicine, Khorramabad, 381251698 Iran.,3Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Seyed Abdollah Zahedi
- 1Department of Biochemistry and Genetics, Lorestan University of Medical Sciences, School of Medicine, Khorramabad, 381251698 Iran
| | - Naser Pajouhi
- 2Department of Physiology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.,3Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Peyman Khosravi
- 1Department of Biochemistry and Genetics, Lorestan University of Medical Sciences, School of Medicine, Khorramabad, 381251698 Iran.,4Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Shahrokh Bagheri
- 1Department of Biochemistry and Genetics, Lorestan University of Medical Sciences, School of Medicine, Khorramabad, 381251698 Iran
| | - Hassan Ahmadvand
- 1Department of Biochemistry and Genetics, Lorestan University of Medical Sciences, School of Medicine, Khorramabad, 381251698 Iran
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Cui S, Lv X, Li W, Li Z, Liu H, Gao Y, Huang G. Folic acid modulates VPO1 DNA methylation levels and alleviates oxidative stress-induced apoptosis in vivo and in vitro. Redox Biol 2018; 19:81-91. [PMID: 30125807 PMCID: PMC6105767 DOI: 10.1016/j.redox.2018.08.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/02/2018] [Accepted: 08/07/2018] [Indexed: 12/31/2022] Open
Abstract
Endothelial cell injury and apoptosis play a primary role in the pathogenesis of atherosclerosis. Moreover, accumulating evidence indicates that oxidative injury is an important risk factor for endothelial cell damage. In addition, low folate levels are considered a contributing factor to promotion of vascular disease because of the deregulation of DNA methylation. We aimed to investigate the effects of folic acid on injuries induced by oxidative stress that occur via an epigenetic gene silencing mechanism in ApoE knockout mice fed a high-fat diet and in human umbilical vein endothelial cells treated with oxidized low-density lipoprotein (ox-LDL). We assessed how folic acid influenced the levels of 8-hydroxy-2′-deoxyguanosine (8-OHdG, an oxidative DNA damage marker) and cellular apoptosis in in vivo and in vitro models. Furthermore, we analyzed DNA methyltransferase (DNMT) activity, vascular peroxidase 1 (VPO1) expression, and promoter methylation in human umbilical vein endothelial cells. Our data showed that folic acid reduced 8-OHdG levels and decreased apoptosis in the aortic tissue of ApoE−/− mice. Likewise, our in vitro experiments showed that folic acid protects against endothelial dysfunction induced by ox-LDL by reducing reactive oxygen species (ROS)-derived oxidative injuries, 8-OHdG content, and the apoptosis ratio. Importantly, this effect was indirectly caused by increased DNMT activity and altered DNA methylation at VPO1 promoters, as well as changes in the abundance of VPO1 expression. Collectively, we conclude that folic acid supplementation may prevent oxidative stress-induced apoptosis and suppresses ROS levels through downregulating VPO1 as a consequence of changes in DNA methylation, which may contribute to beneficial effects on endothelial function. Folic acid reduces oxidative stress-induced injuries in atherosclerosis. Folic acid decreases 8-OHdG levels and apoptosis in vivo and in vitro. Folic acid supplementation increases DNMT levels and regulates VPO1 expression. VPO1 expression is modulated by epigenetic silencing via promoter methylation.
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Affiliation(s)
- Shanshan Cui
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Xin Lv
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Zhenshu Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Huan Liu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Yuxia Gao
- Department of Cardiology, General Hospital of Tianjin Medical University, Tianjin 300052, China.
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China.
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13
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Tsuboi Y, Yamada H, Munetsuna E, Yamazaki M, Mizuno G, Murase Y, Ohashi K, Ishikawa H, Kondo M, Inoue T, Hashimoto S, Hamajima N, Suzuki K. Relationship between Long Interspersed Nuclear Element-1 DNA Methylation in Leukocytes and Dyslipidemia in the Japanese General Population. J Atheroscler Thromb 2018; 25:1231-1239. [PMID: 29628482 PMCID: PMC6249363 DOI: 10.5551/jat.43570] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIM Aberrant global DNA methylation is involved in the development of several diseases, including cardiovascular disease (CVD). We investigated whether the methylation of long interspersed nuclear element-1 (LINE-1) in leukocytes is associated with dyslipidemia, a major risk factor for CVD, in the Japanese general population. METHODS We conducted a cross-sectional study consisting of 420 Japanese subjects (187 men and 233 women) without a clinical history of cancer, stroke, or ischemic heart disease. LINE-1 DNA methylation levels in leukocytes were measured using a pyrosequencing method. RESULTS Significantly higher odds ratios (ORs) for hypermethylation were observed in the high LDL cholesterol and high LDL/HDL ratio groups than the corresponding normal group (high LDLC group: OR, 1.88; 95% confidence interval [CI], 1.20-2.96, high LDL/HDL ratio group: OR, 1.90; 95% CI, 1.20-3.01). Subjects with 2 or more lipid abnormalities had significantly higher ORs for hypermethylation than those with no lipid abnormality (OR, 2.31; 95% CI, 1.11-4.82). CONCLUSION LINE-1 DNA hypermethylation in leukocytes was associated with CVD risk profiles: high LDLC, high LDL/HDL ratio, and the degree of abnormal lipid metabolism.
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Affiliation(s)
- Yoshiki Tsuboi
- Clinical Laboratory Medicine, Fujita Health University Graduate School of Health Sciences
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine
| | - Eiji Munetsuna
- Department of Biochemistry, Fujita Health University School of Medicine
| | - Mirai Yamazaki
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences
| | - Genki Mizuno
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences
| | - Yuri Murase
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences
| | - Koji Ohashi
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences
| | - Hiroaki Ishikawa
- Department of Clinical Biochemistry, Fujita Health University School of Health Sciences
| | - Mari Kondo
- Clinical Laboratory Medicine, Fujita Health University Graduate School of Health Sciences
| | - Takashi Inoue
- Clinical Laboratory Medicine, Fujita Health University Graduate School of Health Sciences.,Department of Preventive Medical Sciences, Fujita Health University School of Health Sciences
| | - Shuji Hashimoto
- Department of Hygiene, Fujita Health University School of Medicine
| | - Nobuyuki Hamajima
- Department of Healthcare Administration, Nagoya University Graduate School of Medicine
| | - Koji Suzuki
- Clinical Laboratory Medicine, Fujita Health University Graduate School of Health Sciences.,Department of Preventive Medical Sciences, Fujita Health University School of Health Sciences
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14
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Tristán-Flores FE, Guzmán P, Ortega-Kermedy MS, Cruz-Torres G, de la Rocha C, Silva-Martínez GA, Rodríguez-Ríos D, Alvarado-Caudillo Y, Barbosa-Sabanero G, Sayols S, Lund G, Zaina S. Liver X Receptor-Binding DNA Motif Associated With Atherosclerosis-Specific DNA Methylation Profiles of Alu Elements and Neighboring CpG Islands. J Am Heart Assoc 2018; 7:e007686. [PMID: 29386205 PMCID: PMC5850253 DOI: 10.1161/jaha.117.007686] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/18/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND The signals that determine atherosclerosis-specific DNA methylation profiles are only partially known. We previously identified a 29-bp DNA motif (differential methylation motif [DMM]) proximal to CpG islands (CGIs) that undergo demethylation in advanced human atheromas. Those data hinted that the DMM docks modifiers of DNA methylation and transcription. METHODS AND RESULTS We sought to functionally characterize the DMM. We showed that the DMM overlaps with the RNA polymerase III-binding B box of Alu short interspersed nuclear elements and contains a DR2 nuclear receptor response element. Pointing to a possible functional role for an Alu DMM, CGIs proximal (<100 bp) to near-intact DMM-harboring Alu are significantly less methylated relative to CGIs proximal to degenerate DMM-harboring Alu or to DMM-devoid mammalian-wide interspersed repeat short interspersed nuclear elements in human arteries. As for DMM-binding factors, LXRB (liver X receptor β) binds the DMM in a DR2-dependent fashion, and LXR (liver X receptor) agonists induce significant hypermethylation of the bulk of Alu in THP-1 cells. Furthermore, we describe 3 intergenic long noncoding RNAs that harbor a DMM, are under transcriptional control by LXR agonists, and are differentially expressed between normal and atherosclerotic human aortas. Notably, CGIs adjacent to those long noncoding RNAs tend to be hypomethylated in symptomatic relative to stable human atheromas. CONCLUSIONS Collectively, the data suggest that a DMM is associated with 2 distinct methylation states: relatively low methylation of in cis CGIs and Alu element hypermethylation. Based on the known atheroprotective role of LXRs, we propose that LXR agonist-induced Alu hypermethylation, a landmark of atherosclerosis, is a compensatory rather than proatherogenic response.
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Affiliation(s)
| | - Plinio Guzmán
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, Irapuato, Gto, Mexico
| | | | - Gabriela Cruz-Torres
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, León, Gto, Mexico
| | - Carmen de la Rocha
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, Irapuato, Gto, Mexico
| | | | - Dalia Rodríguez-Ríos
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, Irapuato, Gto, Mexico
| | - Yolanda Alvarado-Caudillo
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, León, Gto, Mexico
| | - Gloria Barbosa-Sabanero
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, León, Gto, Mexico
| | - Sergi Sayols
- Institute of Molecular Biology gGmbH, Mainz, Germany
| | - Gertrud Lund
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, Irapuato, Gto, Mexico
| | - Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, León, Gto, Mexico
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15
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Krupinski J, Carrera C, Muiño E, Torres N, Al-Baradie R, Cullell N, Fernandez-Cadenas I. DNA Methylation in Stroke. Update of Latest Advances. Comput Struct Biotechnol J 2017; 16:1-5. [PMID: 29321829 PMCID: PMC5751876 DOI: 10.1016/j.csbj.2017.12.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 11/24/2017] [Accepted: 12/06/2017] [Indexed: 12/14/2022] Open
Abstract
Epigenetic modifications are hereditable and modifiable factors that do not alter the DNA sequence. These epigenetic factors include DNA methylation, acetylation of histones and non-coding RNAs. Epigenetic factors have mainly been associated with cancer but also with other diseases and conditions such as diabetes or obesity. In addition, epigenetic modifications could play an important role in cardiovascular diseases, including stroke. We review the latest advances in stroke epigenetics, focusing on DNA methylation studies and the future perspectives in this field.
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Affiliation(s)
- Jerzy Krupinski
- Neurology Service, Hospital Universitari Mútua Terrassa, Terrasa, Barcelona, Spain
- School of Healthcare Science, Manchester Metropolitan University, Manchester, United Kingdom
| | - Caty Carrera
- Neurovascular Research Laboratory, Institut de Recerca, Universitat Autònoma de Barcelona, Hospital Vall d'Hebron, Barcelona, Spain
| | - Elena Muiño
- Stroke Pharmacogenomics and Genetics, Fundació Docència i Recerca Mutua Terrassa, Hospital Universitari Mútua de Terrassa, Terrassa, Barcelona, Spain
| | - Nuria Torres
- Stroke Pharmacogenomics and Genetics, Fundació Docència i Recerca Mutua Terrassa, Hospital Universitari Mútua de Terrassa, Terrassa, Barcelona, Spain
| | - Raid Al-Baradie
- Applied Medical Sciences College Majmaah University, Majmaah, Saudi Arabia
| | - Natalia Cullell
- Stroke Pharmacogenomics and Genetics, Fundació Docència i Recerca Mutua Terrassa, Hospital Universitari Mútua de Terrassa, Terrassa, Barcelona, Spain
| | - Israel Fernandez-Cadenas
- Stroke Pharmacogenomics and Genetics, Fundació Docència i Recerca Mutua Terrassa, Hospital Universitari Mútua de Terrassa, Terrassa, Barcelona, Spain
- Stroke Pharmacogenomics and Genetics, Sant Pau Institute of Research, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Corresponding author at: Stroke Pharmacogenomics and Genetics, Fundació Docència i Recerca Mutua Terrassa, C/ Sant Antoni 19, 08221 Terrassa, Barcelona, Spain.
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16
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Connecting the Dots Between Fatty Acids, Mitochondrial Function, and DNA Methylation in Atherosclerosis. Curr Atheroscler Rep 2017; 19:36. [PMID: 28735349 DOI: 10.1007/s11883-017-0673-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW The quest for factors and mechanisms responsible for aberrant DNA methylation in human disease-including atherosclerosis-is a promising area of research. This review focuses on the role of fatty acids (FAs) as modulators of DNA methylation-in particular the role of mitochondrial beta-oxidation in FA-induced changes in DNA methylation during the progression of atherosclerosis. RECENT FINDINGS Recent publications have advanced the knowledge in all areas touched by this review: the causal role of lipids in shaping the DNA methylome, the associations between chronic degenerative disease and mitochondrial function, the lipid composition of the atheroma, and the relevance of DNA hypermethylation in atherosclerosis. Evidence is beginning to emerge, linking the dynamics of FA type abundance, mitochondrial function, and DNA methylation in the atheroma and systemically. In particular, this review highlights mitochondrial beta-oxidation as an important regulator of DNA methylation in metabolic disease. Despite the many questions still unanswered, this area of research promises to identify mechanisms and molecular factors that establish a pathological gene expression pattern in atherosclerosis.
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17
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2-HG Inhibits Necroptosis by Stimulating DNMT1-Dependent Hypermethylation of the RIP3 Promoter. Cell Rep 2017; 19:1846-1857. [DOI: 10.1016/j.celrep.2017.05.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/31/2017] [Accepted: 05/02/2017] [Indexed: 01/07/2023] Open
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18
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Khyzha N, Alizada A, Wilson MD, Fish JE. Epigenetics of Atherosclerosis: Emerging Mechanisms and Methods. Trends Mol Med 2017; 23:332-347. [PMID: 28291707 DOI: 10.1016/j.molmed.2017.02.004] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/13/2017] [Accepted: 02/16/2017] [Indexed: 12/26/2022]
Abstract
Atherosclerosis is a vascular pathology characterized by inflammation and plaque build-up within arterial vessel walls. Vessel occlusion, often occurring after plaque rupture, can result in myocardial and cerebral infarction. Epigenetic changes are increasingly being associated with atherosclerosis and are of interest from both therapeutic and biomarker perspectives. Emerging genomic approaches that profile DNA methylation, chromatin accessibility, post-translational histone modifications, transcription factor binding, and RNA expression in low or single cell populations are poised to enhance our spatiotemporal understanding of atherogenesis. Here, we review recent therapeutically relevant epigenetic discoveries and emerging technologies that may generate new opportunities for atherosclerosis research.
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Affiliation(s)
- Nadiya Khyzha
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada; Heart & Stroke Richard Lewar Centre of Excellence in Cardiovascular Research, Toronto, Canada
| | - Azad Alizada
- Heart & Stroke Richard Lewar Centre of Excellence in Cardiovascular Research, Toronto, Canada; Genetics and Genome Biology, Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Michael D Wilson
- Heart & Stroke Richard Lewar Centre of Excellence in Cardiovascular Research, Toronto, Canada; Genetics and Genome Biology, Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada.
| | - Jason E Fish
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada; Heart & Stroke Richard Lewar Centre of Excellence in Cardiovascular Research, Toronto, Canada.
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19
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Huang C, Liu H, Gong XL, Wu L, Wen B. Expression of DNA methyltransferases and target microRNAs in human tissue samples related to sporadic colorectal cancer. Oncol Rep 2016; 36:2705-2714. [PMID: 27666771 DOI: 10.3892/or.2016.5104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 07/19/2016] [Indexed: 11/06/2022] Open
Abstract
Tissue microenvironment functions as a pivotal mediator in colorectal carcinogenesis, and its alteration can cause some important cellular responses including epigenetic events. The present study examined histologically altered tissue structure, DNA methyltransferases (DNMTs) and their corresponding expression of target microRNAs (miRNA). Tissues resected by surgery were from primary colorectal carcinoma. These samples were from three locations: and were ≥10, 5 and ≤2 cm away from the proximal lesion of colon cancer, and marked as no. 1, no. 2 and no. 3, respectively. Histological alteration was assessed by H&E staining, expression of DNMT1, DNMT3A, and DNMT3B was detected by immunohistochemistry and western blotting, microarray chip was used to screen distinguishable miRNAs and miRNAs targeting DNMTs whose validation assay was performed by quantitative real-time polymerase chain reaction (qRT-PCR). Our results revealed that normal crypt structure was shown in no. 1, while many aberrant crypt foci appeared in no. 3. Significant upregulation of DNMT1, DNMT3A, and DNMT3B expression was found in para-carcinoma tissues, compared with the histopathologically unchanged tissues (P<0.05), furthermore, distinguishable expression profiling was observed of target miRNAs in tissues with different distance. Our results provide additional insights for future research of colorectal carcinogenesis by introducing the tissue microenvironment.
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Affiliation(s)
- Chao Huang
- PI‑WEI Institute of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510000, P.R. China
| | - Hong Liu
- PI‑WEI Institute of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510000, P.R. China
| | - Xiu-Li Gong
- PI‑WEI Institute of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510000, P.R. China
| | - Liyun Wu
- PI‑WEI Institute of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510000, P.R. China
| | - Bin Wen
- PI‑WEI Institute of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510000, P.R. China
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20
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de la Rocha C, Pérez-Mojica JE, León SZD, Cervantes-Paz B, Tristán-Flores FE, Rodríguez-Ríos D, Molina-Torres J, Ramírez-Chávez E, Alvarado-Caudillo Y, Carmona FJ, Esteller M, Hernández-Rivas R, Wrobel K, Wrobel K, Zaina S, Lund G. Associations between whole peripheral blood fatty acids and DNA methylation in humans. Sci Rep 2016; 6:25867. [PMID: 27181711 PMCID: PMC4867649 DOI: 10.1038/srep25867] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/22/2016] [Indexed: 02/08/2023] Open
Abstract
Fatty acids (FA) modify DNA methylation in vitro, but limited information is available on whether corresponding associations exist in vivo and reflect any short-term effect of the diet. Associations between global DNA methylation and FAs were sought in blood from lactating infants (LI; n = 49) and adult males (AMM; n = 12) equally distributed across the three conventional BMI classes. AMM provided multiple samples at 2-hour intervals during 8 hours after either a single Western diet-representative meal (post-prandial samples) or no meal (fasting samples). Lipid/glucose profile, HDAC4 promoter and PDK4 5’UTR methylation were determined in AMM. Multiple regression analysis revealed that global (in LI) and both global and PDK4-specific DNA methylation (in AMM) were positively associated with eicosapentaenoic and arachidonic acid. HDAC4 methylation was inversely associated with arachidonic acid post-prandially in AMM. Global DNA methylation did not show any defined within-day pattern that would suggest a short-term response to the diet. Nonetheless, global DNA methylation was higher in normal weight subjects both post-prandially and in fasting and coincided with higher polyunsaturated relative to monounsaturated and saturated FAs. We show for the first time strong associations of DNA methylation with specific FAs in two human cohorts of distinct age, diet and postnatal development stage.
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Affiliation(s)
- Carmen de la Rocha
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - J Eduardo Pérez-Mojica
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico.,Department of Molecular Biomedicine, CINVESTAV Campus Zacatenco, Mexico D.F., Mexico
| | - Silvia Zenteno-De León
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Braulio Cervantes-Paz
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Fabiola E Tristán-Flores
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Dalia Rodríguez-Ríos
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Jorge Molina-Torres
- Department of Biochemistry and Biotechnology, CINVESTAV Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Enrique Ramírez-Chávez
- Department of Biochemistry and Biotechnology, CINVESTAV Irapuato Unit, 36821 Irapuato, Gto., Mexico
| | - Yolanda Alvarado-Caudillo
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, Mexico
| | - F Javier Carmona
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | | | - Katarzyna Wrobel
- Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus, University of Guanajuato, Mexico
| | - Kazimierz Wrobel
- Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus, University of Guanajuato, Mexico
| | - Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, Mexico
| | - Gertrud Lund
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) Irapuato Unit, 36821 Irapuato, Gto., Mexico
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21
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Silva-Martínez GA, Rodríguez-Ríos D, Alvarado-Caudillo Y, Vaquero A, Esteller M, Carmona FJ, Moran S, Nielsen FC, Wickström-Lindholm M, Wrobel K, Wrobel K, Barbosa-Sabanero G, Zaina S, Lund G. Arachidonic and oleic acid exert distinct effects on the DNA methylome. Epigenetics 2016; 11:321-34. [PMID: 27088456 DOI: 10.1080/15592294.2016.1161873] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Abnormal fatty acid metabolism and availability are landmarks of metabolic diseases, which in turn are associated with aberrant DNA methylation profiles. To understand the role of fatty acids in disease epigenetics, we sought DNA methylation profiles specifically induced by arachidonic (AA) or oleic acid (OA) in cultured cells and compared those with published profiles of normal and diseased tissues. THP-1 monocytes were stimulated with AA or OA and analyzed using Infinium HumanMethylation450 BeadChip (Illumina) and Human Exon 1.0 ST array (Affymetrix). Data were corroborated in mouse embryonic fibroblasts. Comparisons with publicly available data were conducted by standard bioinformatics. AA and OA elicited a complex response marked by a general DNA hypermethylation and hypomethylation in the 1-200 μM range, respectively, with a maximal differential response at the 100 μM dose. The divergent response to AA and OA was prominent within the gene body of target genes, where it correlated positively with transcription. AA-induced DNA methylation profiles were similar to the corresponding profiles described for palmitic acid, atherosclerosis, diabetes, obesity, and autism, but relatively dissimilar from OA-induced profiles. Furthermore, human atherosclerosis grade-associated DNA methylation profiles were significantly enriched in AA-induced profiles. Biochemical evidence pointed to β-oxidation, PPAR-α, and sirtuin 1 as important mediators of AA-induced DNA methylation changes. In conclusion, AA and OA exert distinct effects on the DNA methylome. The observation that AA may contribute to shape the epigenome of important metabolic diseases, supports and expands current diet-based therapeutic and preventive efforts.
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Affiliation(s)
| | - Dalia Rodríguez-Ríos
- a Department of Genetic Engineering , CINVESTAV Irapuato Unit , Irapuato , Mexico
| | - Yolanda Alvarado-Caudillo
- b Department of Medical Sciences , Division of Health Sciences, León Campus, University of Guanajuato , Mexico
| | - Alejandro Vaquero
- c Laboratory of Chromatin Biology, Cancer Epigenetics and Biology Program (PEBC) , IDIBELL, L'Hospitalet de Llobregat , Barcelona , Catalonia , Spain
| | - Manel Esteller
- d Laboratory of Cancer Epigenetics, Cancer Epigenetics and Biology Program (PEBC) , IDIBELL, L'Hospitalet de Llobregat , Barcelona , Catalonia , Spain
| | - F Javier Carmona
- d Laboratory of Cancer Epigenetics, Cancer Epigenetics and Biology Program (PEBC) , IDIBELL, L'Hospitalet de Llobregat , Barcelona , Catalonia , Spain
| | - Sebastian Moran
- d Laboratory of Cancer Epigenetics, Cancer Epigenetics and Biology Program (PEBC) , IDIBELL, L'Hospitalet de Llobregat , Barcelona , Catalonia , Spain
| | - Finn C Nielsen
- e Center for Genomic Medicine, Rigshospitalet , University of Copenhagen , Copenhagen , Denmark
| | - Marie Wickström-Lindholm
- f Experimental Cardiovascular Research , Malmö University Hospital, Lund University , Malmö , Sweden
| | - Katarzyna Wrobel
- g Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus , University of Guanajuato , Mexico
| | - Kazimierz Wrobel
- g Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus , University of Guanajuato , Mexico
| | - Gloria Barbosa-Sabanero
- b Department of Medical Sciences , Division of Health Sciences, León Campus, University of Guanajuato , Mexico
| | - Silvio Zaina
- b Department of Medical Sciences , Division of Health Sciences, León Campus, University of Guanajuato , Mexico
| | - Gertrud Lund
- a Department of Genetic Engineering , CINVESTAV Irapuato Unit , Irapuato , Mexico
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22
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Flores-Sierra J, Arredondo-Guerrero M, Cervantes-Paz B, Rodríguez-Ríos D, Alvarado-Caudillo Y, Nielsen FC, Wrobel K, Wrobel K, Zaina S, Lund G. The trans fatty acid elaidate affects the global DNA methylation profile of cultured cells and in vivo. Lipids Health Dis 2016; 15:75. [PMID: 27068706 PMCID: PMC4828757 DOI: 10.1186/s12944-016-0243-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/01/2016] [Indexed: 12/22/2022] Open
Abstract
Background The deleterious effects of dietary trans fatty acids (tFAs) on human health are well documented. Although significantly reduced or banned in various countries, tFAs may trigger long-term responses that would represent a valid human health concern, particularly if tFAs alter the epigenome. Methods Based on these considerations, we asked whether the tFA elaidic acid (EA; tC18:1) has any effects on global DNA methylation and the transcriptome in cultured human THP-1 monocytes, and whether the progeny of EA-supplemented dams during either pregnancy or lactation in mice (n = 20 per group) show any epigenetic change after exposure. Results EA induced a biphasic effect on global DNA methylation in THP-1 cells, i.e. hypermethylation in the 1–50 μM concentration range, followed by hypomethylation up to the 200 μM dose. On the other hand, the cis isomer oleic acid (OA), a fatty acid with documented beneficial effects on human health, exerted a distinct response, i.e. its effects were weaker and only partially overlapping with EA’s. The maximal differential response between EA and OA was observed at the 50 μM dose. Array expression data revealed that EA induced a pro-inflammatory and adipogenic transcriptional profile compared with OA, although with modest effects on selected (n = 9) gene promoter methylation. In mice, maternal EA supplementation in utero or via the breastmilk induced global adipose tissue DNA hypermethylation in the progeny, that was detectable postnatally at the age of 3 months. Conclusion We document that global DNA hypermethylation is a specific and consistent response to EA in cell culture and in mice, and that EA may exert long-term effects on the epigenome following maternal exposure. Electronic supplementary material The online version of this article (doi:10.1186/s12944-016-0243-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- José Flores-Sierra
- Department of Medical Sciences, Division of Health Sciences, Leon Campus, University of Guanajuato, Leon, Gto., Mexico
| | - Martín Arredondo-Guerrero
- Department of Medical Sciences, Division of Health Sciences, Leon Campus, University of Guanajuato, Leon, Gto., Mexico.,Tecnológico de Monterrey, Leon Campus, Leon, Gto., Mexico
| | - Braulio Cervantes-Paz
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, 36821, Irapuato, Gto., Mexico
| | - Dalia Rodríguez-Ríos
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, 36821, Irapuato, Gto., Mexico
| | - Yolanda Alvarado-Caudillo
- Department of Medical Sciences, Division of Health Sciences, Leon Campus, University of Guanajuato, Leon, Gto., Mexico
| | - Finn C Nielsen
- Center for Genomic Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Katarzyna Wrobel
- Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus, University of Guanajuato, Guanajuato, Gto., Mexico
| | - Kazimierz Wrobel
- Department of Chemistry, Division of Natural and Exact Sciences, Guanajuato Campus, University of Guanajuato, Guanajuato, Gto., Mexico
| | - Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, Leon Campus, University of Guanajuato, Leon, Gto., Mexico
| | - Gertrud Lund
- Department of Genetic Engineering, CINVESTAV Irapuato Unit, 36821, Irapuato, Gto., Mexico.
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Olszowy P, Donnelly MR, Lee C, Ciborowski P. Profiling post-translational modifications of histones in human monocyte-derived macrophages. Proteome Sci 2015; 13:24. [PMID: 26412985 PMCID: PMC4582717 DOI: 10.1186/s12953-015-0080-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/17/2015] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Histones and their post-translational modifications impact cellular function by acting as key regulators in the maintenance and remodeling of chromatin, thus affecting transcription regulation either positively (activation) or negatively (repression). In this study we describe a comprehensive, bottom-up proteomics approach to profiling post-translational modifications (acetylation, mono-, di- and tri-methylation, phosphorylation, biotinylation, ubiquitination, citrullination and ADP-ribosylation) in human macrophages, which are primary cells of the innate immune system. As our knowledge expands, it becomes more evident that macrophages are a heterogeneous population with potentially subtle differences in their responses to various stimuli driven by highly complex epigenetic regulatory mechanisms. METHODS To profile post-translational modifications (PTMs) of histones in macrophages we used two platforms of liquid chromatography and mass spectrometry. One platform was based on Sciex5600 TripleTof and the second one was based on VelosPro Orbitrap Elite ETD mass spectrometers. RESULTS We provide side-by-side comparison of profiling using two mass spectrometric platforms, ion trap and qTOF, coupled with the application of collisional induced and electron transfer dissociation. We show for the first time methylation of a His residue in macrophages and demonstrate differences in histone PTMs between those currently reported for macrophage cell lines and what we identified in primary cells. We have found a relatively low level of histone PTMs in differentiated but resting human primary monocyte derived macrophages. CONCLUSIONS This study is the first comprehensive profiling of histone PTMs in primary human MDM. Our study implies that epigenetic regulatory mechanisms operative in transformed cell lines and primary cells are overlapping to a limited extent. Our mass spectrometric approach provides groundwork for the investigation of how histone PTMs contribute to epigenetic regulation in primary human macrophages.
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Affiliation(s)
- Pawel Olszowy
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880 USA ; Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7 Street, 87-100 Torun, Poland
| | - Maire Rose Donnelly
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880 USA
| | - Chanho Lee
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880 USA
| | - Pawel Ciborowski
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880 USA
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Zaina S, Heyn H, Carmona FJ, Varol N, Sayols S, Condom E, Ramírez-Ruz J, Gomez A, Gonçalves I, Moran S, Esteller M. DNA methylation map of human atherosclerosis. ACTA ACUST UNITED AC 2014; 7:692-700. [PMID: 25091541 DOI: 10.1161/circgenetics.113.000441] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Epigenetic alterations may contribute to the development of atherosclerosis. In particular, DNA methylation, a reversible and highly regulated DNA modification, could influence disease onset and progression because it functions as an effector for environmental influences, including diet and lifestyle, both of which are risk factors for cardiovascular diseases. METHODS AND RESULTS To address the role of DNA methylation changes in atherosclerosis, we compared a donor-matched healthy and atherosclerotic human aorta sample using whole-genome shotgun bisulfite sequencing. We observed that the atherosclerotic portion of the aorta was hypermethylated across many genomic loci in comparison with the matched healthy counterpart. Furthermore, we defined specific loci of differential DNA methylation using a set of donor-matched aortic samples and a high-density (>450 000 CpG sites) DNA methylation microarray. The functional importance in the disease was corroborated by crossing the DNA methylation signature with the corresponding expression data of the same samples. Among the differentially methylated CpGs associated with atherosclerosis onset, we identified genes participating in endothelial and smooth muscle functions. These findings provide new clues toward a better understanding of the molecular mechanisms of atherosclerosis. CONCLUSIONS Our data identify an atherosclerosis-specific DNA methylation profile that highlights the contribution of different genes and pathways to the disorder. Interestingly, the observed gain of DNA methylation in the atherosclerotic lesions justifies efforts to develop DNA demethylating agents for therapeutic benefit.
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Affiliation(s)
- Silvio Zaina
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.).
| | - Holger Heyn
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - F Javier Carmona
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Nuray Varol
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Sergi Sayols
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Enric Condom
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - José Ramírez-Ruz
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Antonio Gomez
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Isabel Gonçalves
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Sebastian Moran
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.)
| | - Manel Esteller
- From the Division of Health Sciences, Department of Medical Sciences, University of Guanajuato, León, Guanajuato, Mexico (S.Z.); Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Catalonia, Spain (H.H., F.J.C., N.V., S.S., A.G., S.M., M.E.); Department of Pathology, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) (E.C.), Barcelona, Spain; Department of Pathology and Experimental Therapeutics (E.C.), Department of Anatomy and Pathology, Hospital Clinic (J.R.-R.), Department of Physiological Sciences II, School of Medicine (M.E.), University of Barcelona, Barcelona, Catalonia, Spain; Experimental Cardiovascular Research, Lund University, Malmö, Sweden (I.G.); and Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain (M.E.).
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25
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Abdel-Halim M, Diesel B, Kiemer AK, Abadi AH, Hartmann RW, Engel M. Discovery and optimization of 1,3,5-trisubstituted pyrazolines as potent and highly selective allosteric inhibitors of protein kinase C-ζ. J Med Chem 2014; 57:6513-30. [PMID: 25058929 DOI: 10.1021/jm500521n] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
There is increasing evidence that the atypical protein kinase C, PKCζ, might be a therapeutic target in pulmonary and hepatic inflammatory diseases. However, targeting the highly conserved ATP-binding pocket in the catalytic domain held little promise to achieve selective inhibition. In the present study, we introduce 1,3,5-trisubstituted pyrazolines as potent and selective allosteric PKCζ inhibitors. The rigid scaffold offered many sites for modification, all acting as hot spots for improving activity, and gave rise to sharp structure-activity relationships. Targeting of PKCζ in cells was confirmed by reporter gene assay, transfection assays, and Western blotting. The strongly reduced cell-free and cellular activities toward a PIF-pocket mutant of PKCζ suggested that the inhibitors most likely bound to the PIF-pocket on the kinase catalytic domain. Thus, using a rigidification strategy and by establishing and optimizing multiple molecular interactions with the binding site, we were able to significantly improve the potency of the previously reported PKCζ inhibitors.
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Affiliation(s)
- Mohammad Abdel-Halim
- Pharmaceutical and Medicinal Chemistry, Saarland University , Campus C2.3, D-66123 Saarbrücken, Germany
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26
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van Kampen E, Jaminon A, van Berkel TJC, Van Eck M. Diet-induced (epigenetic) changes in bone marrow augment atherosclerosis. J Leukoc Biol 2014; 96:833-41. [DOI: 10.1189/jlb.1a0114-017r] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Abstract
PURPOSE OF REVIEW Epigenetic mechanisms of transcriptional regulation in atherosclerosis have gained an increasing interest in recent years. We focus on the relevance of DNA methylation, a well characterized epigenetic modification of the genome, as a biomarker and underlying mechanism of atherosclerosis. RECENT FINDINGS A growing number of loci have been identified, which are good candidate biomarkers for atherosclerosis and provide novel insights into the molecular changes taking place in the diseased vessel. Understanding the global change in DNA methylation during atherosclerosis remains a challenge. Novel unfolding research avenues include the interplay between genetic variants and DNA methylation patterns, and the role of long noncoding RNAs as epigenetic regulators. SUMMARY Epigenetics continues to represent a promising area of research in atherosclerosis. The full exploitation of cutting edge epigenomics will be decisive to define whether epigenetics will contribute to lower the burden of cardiovascular diseases.
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Affiliation(s)
- Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, Campus León, University of Guanajuato, León, Mexico
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28
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Guay SP, Brisson D, Lamarche B, Gaudet D, Bouchard L. Epipolymorphisms within lipoprotein genes contribute independently to plasma lipid levels in familial hypercholesterolemia. Epigenetics 2014; 9:718-29. [PMID: 24504152 DOI: 10.4161/epi.27981] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Gene polymorphisms associated so far with plasma lipid concentrations explain only a fraction of their heritability, which can reach up to 60%. Recent studies suggest that epigenetic modifications (DNA methylation) could contribute to explain part of this missing heritability. We therefore assessed whether the DNA methylation of key lipoprotein metabolism genes is associated with high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C) and triglyceride levels in patients with familial hypercholesterolemia (FH). Untreated FH patients (61 men and 37 women) were recruited for the measurement of blood DNA methylation levels at the ABCG1, LIPC, PLTP and SCARB1 gene loci using bisulfite pyrosequencing. ABCG1, LIPC and PLTP DNA methylation was significantly associated with HDL-C, LDL-C and triglyceride levels in a sex-specific manner (all P<0.05). FH subjects with previous history of coronary artery disease (CAD) had higher LIPC DNA methylation levels compared with FH subjects without CAD (P = 0.02). Sex-specific multivariable linear regression models showed that new and previously reported epipolymorphisms (ABCG1-CpGC3, LIPC-CpGA2, mean PLTP-CpGC, LPL-CpGA3, CETP-CpGA2, and CETP-CpGB2) significantly contribute to variations in plasma lipid levels (all P<0.001 in men and P<0.02 in women), independently of traditional predictors such as age, waist circumference, blood pressure, fasting plasma lipids and glucose levels. These results suggest that epigenetic perturbations of key lipoprotein metabolism genes are associated with plasma lipid levels, contribute to the interindividual variability and might partially explain the missing heritability of plasma lipid levels, at least in FH.
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Affiliation(s)
- Simon-Pierre Guay
- Department of Biochemistry; Université de Sherbrooke; Sherbrooke, QC Canada; ECOGENE-21 and Lipid Clinic; Chicoutimi Hospital; Saguenay, QC Canada
| | - Diane Brisson
- ECOGENE-21 and Lipid Clinic; Chicoutimi Hospital; Saguenay, QC Canada; Department of Medicine; Université de Montréal; Montréal, QC Canada
| | - Benoit Lamarche
- Institute of Nutrition and Functional Foods; Université Laval; Québec, QC Canada
| | - Daniel Gaudet
- ECOGENE-21 and Lipid Clinic; Chicoutimi Hospital; Saguenay, QC Canada; Department of Medicine; Université de Montréal; Montréal, QC Canada
| | - Luigi Bouchard
- Department of Biochemistry; Université de Sherbrooke; Sherbrooke, QC Canada; ECOGENE-21 and Lipid Clinic; Chicoutimi Hospital; Saguenay, QC Canada
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29
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Zaina S, del Pilar Valencia-Morales M, Tristán-Flores FE, Lund G. Nuclear reprogramming and its role in vascular smooth muscle cells. Curr Atheroscler Rep 2013; 15:352. [PMID: 23881547 DOI: 10.1007/s11883-013-0352-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In general terms, "nuclear reprogramming" refers to a change in gene expression profile that results in a significant switch in cellular phenotype. Nuclear reprogramming was first addressed by pioneering studies of cell differentiation during embryonic development. In recent years, nuclear reprogramming has been studied in great detail in the context of experimentally controlled dedifferentiation and transdifferentiation of mammalian cells for therapeutic purposes. In this review, we present a perspective on nuclear reprogramming in the context of spontaneous, pathophysiological phenotypic switch of vascular cells occurring in the atherosclerotic lesion. In particular, we focus on the current knowledge of epigenetic mechanisms participating in the extraordinary flexibility of the gene expression profile of vascular smooth muscle cells and other cell types participating in atherogenesis. Understanding how epigenetic changes participate in vascular cell plasticity may lead to effective therapies based on the remodelling of the vascular architecture.
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Affiliation(s)
- Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, 20 de Enero no. 929, 37320, León, Gto., Mexico.
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Yanez Barrientos E, Wrobel K, Lopez Torres A, Gutiérrez Corona F, Wrobel K. Application of reversed-phase high-performance liquid chromatography with fluorimetric detection for simultaneous assessment of global DNA and total RNA methylation in Lepidium sativum: effect of plant exposure to Cd(II) and Se(IV). Anal Bioanal Chem 2013; 405:2397-404. [PMID: 23322354 DOI: 10.1007/s00216-013-6703-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 12/21/2012] [Indexed: 12/14/2022]
Abstract
In the present work, application of the previously established reversed-phase liquid chromatography procedure based on fluorescent labeling of cytosine and methylcytosine moieties with 2-bromoacetophenone (HPLC-FLD) is presented for simultaneous evaluation of global DNA and total RNA methylation at cytosine carbon 5. The need for such analysis was comprehended from the recent advances in the field of epigenetics that highlight the importance of non-coding RNAs in DNA methylation and suggest that RNA methylation might play a similar role in the modulation of genetic information, as previously demonstrated for DNA. In order to adopt HPLC-FLD procedure for DNA and RNA methylation analysis in a single biomass extract, two extraction procedures with different selectivity toward nucleic acids were examined, and a simplified calibration was designed allowing for evaluation of methylation percentage based on the ratio of chromatographic peak areas: cytidine/5-methylcytidine for RNA and 2'-deoxycytidine/5-methyl-2'-deoxycytidine for DNA. As a proof of concept, global DNA and total RNA methylation were determined in Lepidium sativum hydroponically grown in the presence of different Cd(II) or Se(IV) concentrations, expecting that plant exposure to abiotic stress might affect not only global DNA but also total RNA methylation. The results obtained showed the increase of DNA methylation in the treated plants up to concentration levels 2 mg L(-1) Cd and 1 mg L(-1) Se in the growth medium. For higher stressors' concentration, global DNA methylation tended to decrease. Most importantly, an inverse correlation was found between DNA and RNA methylation levels (r = -0.6788, p = 0.031), calling for further studies of this particular modification of nucleic acids in epigenetic context.
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Moghimi SM, Wibroe PP, Helvig SY, Farhangrazi ZS, Hunter AC. Genomic perspectives in inter-individual adverse responses following nanomedicine administration: The way forward. Adv Drug Deliv Rev 2012; 64:1385-93. [PMID: 22634158 DOI: 10.1016/j.addr.2012.05.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 05/17/2012] [Indexed: 01/18/2023]
Abstract
The underlying mechanism of intravenous infusion-related adverse reactions inherent to regulatory-approved nanomedicines still remains elusive. There are substantial inter-individual differences in observed adverse reactions, which may include cardiovascular, broncho-pulmonary, muco-cutaneous, neuro-psychosomatic and autonomic manifestations. Although nanomedicine-mediated triggering of complement activation has been suggested to be a significant contributing factor to these adverse events, complement activation may still proceed in non-responders. Whether these reactions share similar immunological mechanisms and underpinning genetic factors with drug hypersensitivity syndrome remains to be investigated. Genetic association studies could be a powerful tool to dissect causative factors and reveal the multiple molecular pathways that induce infusion related adverse reactions. It is envisaged that such research may lead to the design of reliable in vitro profiling tests for risk assessment and treatment decisions, thereby revolutionizing the practice of medicine with nanopharmaceuticals. Such procedures may further improve regulatory approval processes for nanomedicines currently in the pipeline and decrease the overall cost of health care. Here we discuss some key innate immunity genes and their polymorphisms in relation to nanomedicine infusion-mediated symptomatic responses.
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Affiliation(s)
- S Moein Moghimi
- Centre for Pharmaceutical Nanotechnology and Nanotoxicology, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
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