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Post-Translational Modifications Evoked by Reactive Carbonyl Species in Ultraviolet-A-Exposed Skin: Implication in Fibroblast Senescence and Skin Photoaging. Antioxidants (Basel) 2022; 11:antiox11112281. [PMID: 36421467 PMCID: PMC9687576 DOI: 10.3390/antiox11112281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Photoaging is an accelerated form of aging resulting from skin exposure to ultraviolet (UV) radiation. UV-A radiation deeply penetrates the dermis and triggers the generation of reactive oxygen species (ROS) which promotes damage to DNA, lipids and proteins. Lipid peroxidation results from the oxidative attack of polyunsaturated fatty acids which generate a huge amount of lipid peroxidation products, among them reactive carbonyl species (RCS) such as α, β-unsaturated hydroxyalkenals (e.g., 4-hydroxynonenal), acrolein or malondialdehyde. These highly reactive agents form adducts on free NH2 groups and thiol residues on amino acids in proteins and can also modify DNA and phospholipids. The accumulation of RCS-adducts leads to carbonyl stress characterized by progressive cellular and tissular dysfunction, inflammation and toxicity. RCS-adducts are formed in the dermis of skin exposed to UV-A radiation. Several RCS targets have been identified in the dermis, such as collagen and elastin in the extracellular matrix, whose modification could contribute to actinic elastosis lesions. RCS-adducts may play a role in fibroblast senescence via the modification of histones, and the sirtuin SIRT1, leading to an accumulation of acetylated proteins. The cytoskeleton protein vimentin is modified by RCS, which could impair fibroblast motility. A better identification of protein modification and carbonyl stress in the dermis may help to develop new treatment approaches for preventing photoaging.
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Rasheed Z, Alharbi A, Alrakebeh A, Almansour K, Almadi A, Almuzaini A, Salem M, Aloboody B, Alkobair A, Albegami A, Alhomaidan HT, Rasheed N, Alqossayir FM, Musa KH, Hamad EM, Al Abdulmonem W. Thymoquinone provides structural protection of human hemoglobin against oxidative damage: Biochemical studies. Biochimie 2021; 192:102-110. [PMID: 34655671 DOI: 10.1016/j.biochi.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/03/2021] [Accepted: 10/11/2021] [Indexed: 11/30/2022]
Abstract
Hydroxyl radicals (OH.) are one of the most active reactive oxidants recognized for their deleterious effects to cause protein oxidative damage. Thymoquinone, a monoterpene molecule abundantly present in black cumin and known for its pharmacological activities, but its activity against the OH.-induced protein oxidative damage has never been explored. This study determined the therapeutic potential of thymoquinone against OH.-induced oxidative human hemoglobin damage. Novel data demonstrated that thymoquinone provides structural protection of hemoglobin against oxidative damage. Treatment of hemoglobin with OH. induces hypochromicity at 280 and 405 nm, whereas thymoquinone reversed these hypochromic effects. In addition, OH. cause significant reduction in tryptophan fluorescence, however thymoquinone also reversed these damaging effects. Thymoquinone also reduces OH.-induced hydrophobicity and also reduces OH.-induced carbonylation. Moreover, it also inhibits thermal stabilization of OH.-hemoglobin complex. SDS-PAGE of unmodified hemoglobin showed four bands, which disappeared upon OH. treatment and these changes were also retained by thymoquinone. In conclusion, this is the first study that shows the therapeutic potential of thymoquinone against OH.-induced oxidative damage in human hemoglobin.
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Affiliation(s)
- Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia.
| | - Adel Alharbi
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Abdullah Alrakebeh
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Khaled Almansour
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Abdulaziz Almadi
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ahmed Almuzaini
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Mohammed Salem
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Bassim Aloboody
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Abdulsalam Alkobair
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ahmad Albegami
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Homaidan T Alhomaidan
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Naila Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Fuhaid M Alqossayir
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Khalid H Musa
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Essam M Hamad
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
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Yu XH, Cao RR, Yang YQ, Lei SF. Identification of causal metabolites related to multiple autoimmune diseases. Hum Mol Genet 2021; 31:604-613. [PMID: 34523675 DOI: 10.1093/hmg/ddab273] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECT Observational studies provide evidence that metabolites may be involved in the development of autoimmune diseases (ADs), but whether it is causal is still unknown. METHODS Based on the large-scale GWAS summary statistics, two-sample Mendelian randomization (MR) was performed to evaluate the causal association between human serum metabolites and multiple ADs, which were inflammatory bowel disease (IBD), ulcerative Colitis (UC), crohn's disease (CD), rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), type 1 diabetes (T1D), multiple sclerosis (MS), primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC). Comprehensive sensitive analysis was used to validate the robustness of MR results and multivariable MR analysis was conducted to avoid potential pleiotropic effect of other complex traits. Finally, metabolic pathway analysis was performed based on causal metabolites for each ad, respectively. RESULTS We identified 6 causal features of metabolite after Bonferroni adjustment, i.e. glycerol 2-phosphate for T1D, hexadecanedioate, phenylacetylglutamine and laurylcarnitine for RA, glycine and arachidonate (20:4n6) for CD. Then comprehensively sensitive analysis proved the robustness of the causal associations. We also observed some overlaps of metabolites among different ADs, indicating the similar mechanisms. After controlling for several common traits, multivariable MR analysis ruled out most of potential pleiotropic effects and validated the independence of identified metabolites. Additionally, a total of 6 metabolic pathways have been identified for different ADs. CONCLUSIONS This study provided novel insights into investigating causal role of serum metabolites in development of multiple ADs through a comprehensive genetic pathway.
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Affiliation(s)
- Xing-Hao Yu
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Rong-Rong Cao
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Yi-Qun Yang
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Shu-Feng Lei
- Center for Genetic Epidemiology and Genomics, School of Public Health, Medical College of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, P. R. China
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García-Giménez JL, Garcés C, Romá-Mateo C, Pallardó FV. Oxidative stress-mediated alterations in histone post-translational modifications. Free Radic Biol Med 2021; 170:6-18. [PMID: 33689846 DOI: 10.1016/j.freeradbiomed.2021.02.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 12/15/2022]
Abstract
Epigenetic regulation of gene expression provides a finely tuned response capacity for cells when undergoing environmental changes. However, in the context of human physiology or disease, any cellular imbalance that modulates homeostasis has the potential to trigger molecular changes that result either in physiological adaptation to a new situation or pathological conditions. These effects are partly due to alterations in the functionality of epigenetic regulators, which cause long-term and often heritable changes in cell lineages. As such, free radicals resulting from unbalanced/extended oxidative stress have been proved to act as modulators of epigenetic agents, resulting in alterations of the epigenetic landscape. In the present review we will focus on the particular effect that oxidative stress and free radicals produce in histone post-translational modifications that contribute to altering the histone code and, consequently, gene expression. The pathological consequences of the changes in this epigenetic layer of regulation of gene expression are thoroughly evidenced by data gathered in many physiological adaptive processes and in human diseases that range from age-related neurodegenerative pathologies to cancer, and that include respiratory syndromes, infertility, and systemic inflammatory conditions like sepsis.
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Affiliation(s)
- José-Luis García-Giménez
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Concepción Garcés
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain
| | - Carlos Romá-Mateo
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Federico V Pallardó
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain.
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5
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Harjivan SG, Charneira C, Martins IL, Pereira SA, Espadas G, Sabidó E, Beland FA, Marques MM, Antunes AMM. Covalent Histone Modification by an Electrophilic Derivative of the Anti-HIV Drug Nevirapine. Molecules 2021; 26:1349. [PMID: 33802579 PMCID: PMC7961589 DOI: 10.3390/molecules26051349] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/24/2021] [Accepted: 02/24/2021] [Indexed: 12/20/2022] Open
Abstract
Nevirapine (NVP), a non-nucleoside reverse transcriptase inhibitor widely used in combined antiretroviral therapy and to prevent mother-to-child transmission of the human immunodeficiency virus type 1, is associated with several adverse side effects. Using 12-mesyloxy-nevirapine, a model electrophile of the reactive metabolites derived from the NVP Phase I metabolite, 12-hydroxy-NVP, we demonstrate that the nucleophilic core and C-terminal residues of histones are targets for covalent adduct formation. We identified multiple NVP-modification sites at lysine (e.g., H2BK47, H4K32), histidine (e.g., H2BH110, H4H76), and serine (e.g., H2BS33) residues of the four histones using a mass spectrometry-based bottom-up proteomic analysis. In particular, H2BK47, H2BH110, H2AH83, and H4H76 were found to be potential hot spots for NVP incorporation. Notably, a remarkable selectivity to the imidazole ring of histidine was observed, with modification by NVP detected in three out of the 11 histidine residues of histones. This suggests that NVP-modified histidine residues of histones are prospective markers of the drug's bioactivation and/or toxicity. Importantly, NVP-derived modifications were identified at sites known to determine chromatin structure (e.g., H4H76) or that can undergo multiple types of post-translational modifications (e.g., H2BK47, H4H76). These results open new insights into the molecular mechanisms of drug-induced adverse reactions.
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Affiliation(s)
- Shrika G. Harjivan
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (S.G.H.); (C.C.); (I.L.M.); (M.M.M.)
| | - Catarina Charneira
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (S.G.H.); (C.C.); (I.L.M.); (M.M.M.)
| | - Inês L. Martins
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (S.G.H.); (C.C.); (I.L.M.); (M.M.M.)
| | - Sofia A. Pereira
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal;
| | - Guadalupe Espadas
- Proteomics Unit, Centre for Genomic Regulation (CRG), Dr. Aiguader 88, 08003 Barcelona, Spain; (G.E.); (E.S.)
- Proteomics Unit, Universitat Pompeu Fabra (UPF), Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Eduard Sabidó
- Proteomics Unit, Centre for Genomic Regulation (CRG), Dr. Aiguader 88, 08003 Barcelona, Spain; (G.E.); (E.S.)
- Proteomics Unit, Universitat Pompeu Fabra (UPF), Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Frederick A. Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA;
| | - M. Matilde Marques
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (S.G.H.); (C.C.); (I.L.M.); (M.M.M.)
| | - Alexandra M. M. Antunes
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (S.G.H.); (C.C.); (I.L.M.); (M.M.M.)
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Tesch S, Abdirama D, Grießbach AS, Brand HA, Goerlich N, Humrich JY, Bacher P, Hiepe F, Riemekasten G, Enghard P. Identification and characterization of antigen-specific CD4 + T cells targeting renally expressed antigens in human lupus nephritis with two independent methods. Sci Rep 2020; 10:21312. [PMID: 33277543 PMCID: PMC7718878 DOI: 10.1038/s41598-020-78223-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 11/17/2020] [Indexed: 12/02/2022] Open
Abstract
In the search for anti-renal autoreactivity in human lupus nephritis, we stimulated blood-derived CD4+ T cells from patients with systemic lupus erythematosus with various kidney lysates. Although only minor responses were detectable, these experiments led to the development of a search algorithm that combined autoantibody association with human lupus nephritis and target gene expression in inflamed kidneys. Applying this algorithm, five potential T cell antigens were identified. Blood-derived CD4+ T cells were then stimulated with these antigens. The cells were magnetically enriched prior to measurement with flow cytometry to facilitate the detection of very rare autoantigen-specific cells. The detected responses were dominated by IFN-γ-producing CD4+ T cells. Additionally, IL-10-producing CD4+ T cells were found. In a next step, T cell reactivity to each single antigen was independently evaluated with T cell libraries and [3H]-thymidine incorporation assays. Here, Vimentin and Annexin A2 were identified as the main T cell targets. Finally, Vimentin reactive T cells were also found in the urine of three patients with active disease. Overall, our experiments show that antigen-specific CD4+ T cells targeting renally expressed antigens arise in human lupus nephritis and correlate with disease activity and are mainly of the Th1 subset.
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Affiliation(s)
- Sebastian Tesch
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany.,Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
| | - Dimas Abdirama
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Anna-Sophie Grießbach
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Hannah Antonia Brand
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany.,Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
| | - Nina Goerlich
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany.,Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany
| | - Jens Y Humrich
- Department of Rheumatology and Clinical Immunology, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Petra Bacher
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany.,Institute of Immunology, Christian-Albrechts Universität zu Kiel and Universitätsklinik Schleswig-Holstein, Kiel, Germany.,Institute of Clinical Molecular Biology, Christian-Albrechts Universität zu Kiel, Kiel, Germany
| | - Falk Hiepe
- Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany.,Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Gabriela Riemekasten
- Department of Rheumatology and Clinical Immunology, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Philipp Enghard
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Berlin, Germany. .,Deutsches Rheuma-Forschungszentrum, A Leibniz Institute, Berlin, Germany.
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7
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Oxidative, Reductive, and Nitrosative Stress Effects on Epigenetics and on Posttranslational Modification of Enzymes in Cardiometabolic Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8819719. [PMID: 33204398 PMCID: PMC7649698 DOI: 10.1155/2020/8819719] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/09/2020] [Accepted: 10/16/2020] [Indexed: 02/07/2023]
Abstract
Oxidative (OS), reductive (RS), and nitrosative (NSS) stresses produce carbonylation, glycation, glutathionylation, sulfhydration, nitration, and nitrosylation reactions. OS, RS, and NSS are interrelated since RS results from an overactivation of antioxidant systems and NSS is the result of the overactivation of the oxidation of nitric oxide (NO). Here, we discuss the general characteristics of the three types of stress and the way by which the reactions they induce (a) damage the DNA structure causing strand breaks or inducing the formation of 8-oxo-d guanosine; (b) modify histones; (c) modify the activities of the enzymes that determine the establishment of epigenetic cues such as DNA methyl transferases, histone methyl transferases, acetyltransferases, and deacetylases; (d) alter DNA reparation enzymes by posttranslational mechanisms; and (e) regulate the activities of intracellular enzymes participating in metabolic reactions and in signaling pathways through posttranslational modifications. Furthermore, the three types of stress may establish new epigenetic marks through these reactions. The development of cardiometabolic disorders in adult life may be programed since early stages of development by epigenetic cues which may be established or modified by OS, RS, and NSS. Therefore, the three types of stress participate importantly in mediating the impact of the early life environment on later health and heritability. Here, we discuss their impact on cardiometabolic diseases. The epigenetic modifications induced by these stresses depend on union and release of chemical residues on a DNA sequence and/or on amino acid residues in proteins, and therefore, they are reversible and potentially treatable.
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8
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Geib T, Iacob C, Jribi R, Fernandes J, Benderdour M, Sleno L. Identification of 4-hydroxynonenal-modified proteins in human osteoarthritic chondrocytes. J Proteomics 2020; 232:104024. [PMID: 33122130 DOI: 10.1016/j.jprot.2020.104024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 10/06/2020] [Accepted: 10/22/2020] [Indexed: 11/19/2022]
Abstract
The α,β-unsaturated aldehyde 4-hydroxynonenal (HNE) is formed through lipid peroxidation during oxidative stress. As a highly reactive electrophile, it is able to form adducts with various biomolecules, including proteins. These protein modifications could modulate many signaling pathways, as well as cell differentiation and proliferation, and thus could be highly important in the context of the extracellular matrix and degradation of articular cartilage. This study specifically investigated the role of HNE as a bioactive molecule in chondrocytes of osteoarthritis (OA) patients. Chondrocyte extracts of OA and non-OA patients were analyzed for HNE binding using Western blot and bottom-up LC-MS/MS analyses. HNE-modified histones, H2A and H2B, and histone deacetylase were identified using anti-HNE antibodies. Furthermore, peptide sequencing and database searching revealed 95 distinct HNE-modified proteins and their exact modification sites, with 88 protein adducts being unique to OA chondrocytes. HNE-proteins of specific interest included histone H2A, H2B and H4, collagen alpha-3(VI) chain, eukaryotic initiation factor 4A-I, and nucleolar RNA helicase 2. Comparing their MS/MS spectra to those of HNE-modified standard peptides further validated the six HNE-proteins. SIGNIFICANCE: HNE binding to proteins has been shown to result in multiple abnormalities of chondrocyte phenotype and function, suggesting its contribution in OA development. Considering the increased levels of HNE in OA cartilage, this reactive aldehyde could play a role in OA. This work represents a clinically-relevant in vivo study to demonstrate the pathophysiological role of HNE in human OA. Since HNE binding can alter protein conformation and function, it remains highly relevant to study the effects of this modification in OA.
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Affiliation(s)
- Timon Geib
- Chemistry Department, Université du Québec à Montréal, Montréal, Québec, Canada
| | - Cristiana Iacob
- Orthopaedic Research Laboratory, Hôpital du Sacré-Coeur, University of Montréal, Montréal, Québec, Canada
| | - Rihab Jribi
- Orthopaedic Research Laboratory, Hôpital du Sacré-Coeur, University of Montréal, Montréal, Québec, Canada
| | - Julio Fernandes
- Orthopaedic Research Laboratory, Hôpital du Sacré-Coeur, University of Montréal, Montréal, Québec, Canada
| | - Mohamed Benderdour
- Orthopaedic Research Laboratory, Hôpital du Sacré-Coeur, University of Montréal, Montréal, Québec, Canada.
| | - Lekha Sleno
- Chemistry Department, Université du Québec à Montréal, Montréal, Québec, Canada.
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9
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Alhomaidan HT, Rasheed N, Almatrafi S, Al-Rashdi FH, Rasheed Z. Bisphenol A modified DNA: A possible immunogenic stimulus for anti-DNA autoantibodies in systemic lupus erythematosus. Autoimmunity 2019; 52:272-280. [DOI: 10.1080/08916934.2019.1683545] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Naila Rasheed
- Department of Medical Biochemistry, Qassim University, Buraidah, KSA
| | - Salem Almatrafi
- Research Center, College of Medicine, Qassim University, Buraidah, KSA
| | | | - Zafar Rasheed
- Department of Medical Biochemistry, Qassim University, Buraidah, KSA
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10
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García-Giménez JL, Romá-Mateo C, Pallardó FV. Oxidative post-translational modifications in histones. Biofactors 2019; 45:641-650. [PMID: 31185139 DOI: 10.1002/biof.1532] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 05/12/2019] [Indexed: 01/12/2023]
Abstract
Epigenetic regulation is attracting much attention because it explains many of the effects that the external environment induces in organisms. Changes in the cellular redox status and even more specifically in its nuclear redox compartment is one of these examples. Redox changes can induce modulation of the epigenetic regulation in cells. Here we present a few cases where reactive oxygen or nitrogen species induces epigenetic marks in histones. Posttranslational modification of these proteins like histone nitrosylation, carbonylation, or glutathionylation together with other mechanisms not reviewed here are the cornerstones of redox-related epigenetic regulation. We currently face a new field of research with potential important consequences for the treatment of many pathologies.
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Affiliation(s)
- José Luis García-Giménez
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- Department of Physiology, School of Medicine and Dentistry, Universitat de València (UV), Valencia, Spain
| | - Carlos Romá-Mateo
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- Department of Physiology, School of Medicine and Dentistry, Universitat de València (UV), Valencia, Spain
| | - Federico V Pallardó
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- Department of Physiology, School of Medicine and Dentistry, Universitat de València (UV), Valencia, Spain
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11
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Gęgotek A, Skrzydlewska E. Biological effect of protein modifications by lipid peroxidation products. Chem Phys Lipids 2019; 221:46-52. [DOI: 10.1016/j.chemphyslip.2019.03.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/26/2019] [Accepted: 03/24/2019] [Indexed: 01/26/2023]
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12
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Tsai KL, Liao CC, Chang YS, Huang CW, Huang YC, Chen JH, Lin SH, Tai CC, Lin YF, Lin CY. Low Levels of IgM and IgA Recognizing Acetylated C1-Inhibitor Peptides Are Associated with Systemic Lupus Erythematosus in Taiwanese Women. Molecules 2019; 24:molecules24091645. [PMID: 31027344 PMCID: PMC6539680 DOI: 10.3390/molecules24091645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/20/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to identify novel acetylation (Ac) modifications of the C1-inhibitor (C1-INH) and explain the association of the levels of autoantibodies against acetylated C1-INH peptides with the risk of developing systemic lupus erythematosus (SLE). Ac modifications of the C1-INH were identified and validated through in-gel digestion, nano-liquid chromatography-tandem mass spectrometry, immunoprecipitation, and Western blotting by using serum protein samples obtained from patients with SLE and age-matched healthy controls (HCs). In addition, the levels of serum C1-INH, Ac-protein adducts, and autoantibodies against unmodified and acetylated C1-INH peptides were measured. C1-INH levels in patients with SLE were significantly lower than those in HCs by 1.53-fold (p = 0.0008); however, Ac-protein adduct concentrations in patients with SLE were significantly higher than those in HCs by 1.35-fold (p = 0.0009). Moreover, immunoglobulin M (IgM) anti-C1-INH367-385 Ac and IgA anti-C1-INH367-385 Ac levels in patients with SLE were significantly lower than those in HCs. The low levels of IgM anti-C1-INH367-385 (odds ratio [OR] = 4.725, p < 0.001), IgM anti-C1-INH367-385 Ac (OR = 4.089, p = 0.001), and IgA anti-C1-INH367-385 Ac (OR = 5.566, p < 0.001) indicated increased risks for the development of SLE compared with HCs.
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Affiliation(s)
- Kai-Leun Tsai
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Chen-Chung Liao
- Proteomics Research Center, National Yang-Ming University, Taipei 112, Taiwan.
| | - Yu-Sheng Chang
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Ching-Wen Huang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yu-Chu Huang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| | - Jin-Hua Chen
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei 11031, Taiwan.
- Research Center of Biostatistics, College of Management, Taipei Medical University, Taipei 11031, Taiwan.
| | - Sheng-Hong Lin
- Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
| | - Chih-Chun Tai
- Department of Laboratory Medicine, Taipei Medical University-Shuang-Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
| | - Yi-Fang Lin
- Department of Laboratory Medicine, Taipei Medical University-Shuang-Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
| | - Ching-Yu Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
- Department of Biotechnology and Animal Science, National Ilan University, Ilan 26047, Taiwan.
- PhD Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
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Almogbel E, Rasheed N. Elevated Levels of Protein Carbonylation in Patients With Diabetic Nephropathy: Therapeutic and Diagnostic Prospects. Am J Med Sci 2019; 358:26-32. [PMID: 31076070 DOI: 10.1016/j.amjms.2019.03.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Oxidative stress-induced protein oxidation has been reported in diabetes mellitus; however a relationship between protein carbonylation and diabetic nephropathy remains to be determined. This study was undertaken to investigate a correlation between protein carbonylation and diabetic nephropathy. METHODS Sera from 153 patients with diabetic nephropathy and 142 healthy humans were selected and protein carbonylation was compared. The glycated hemoglobin (HbA1C), postprandial blood glucose (PPBG), disease duration (DD) and serum creatinine were analyzed and were correlated with the levels of protein oxidation. RESULTS Protein carbonylation was more pronounced in patients with diabetic nephropathy as compared with healthy humans (P < 0.001). The data showed a positive correlation between protein oxidation and HbA1C (P < 0.001, r = 0.752); the carbonylation was high in those patients with high HbA1C (P < 0.01). The data also showed an important correlation between protein oxidation and PPBG (P < 0.0001, r = 0.680); the carbonyl contents were higher in those patients with higher PPBG (P < 0.001). Results also pointed out a positive correlation of protein oxidation with patients DD (P < 0.001, r = 0.769). Importantly, elevated levels of carbonylation in patients with diabetic nephropathy were also correlated with the elevated levels of serum creatinine. CONCLUSIONS This is the first study that shows a positive correlation between protein carbonylation and diabetic nephropathy. The higher carbonylation in patients with higher HbA1C, blood glucose, DD or serum creatinine indicate that oxidative modifications in proteins play a key role in the progression of diabetic nephropathy.
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Affiliation(s)
- Ebtehal Almogbel
- Department of Family Medicine, College of Medicine, Qassim University, Buraidah, Kingdom of Saudi Arabia
| | - Naila Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Kingdom of Saudi Arabia.
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A. G, Rasheed Z, Salama RH, Salem T, Ahmed AA, Zedan K, El-Moniem AA, Elkholy M, A. A, Alzolibani AA. Filaggrin, major basic protein and leukotriene B4: Biomarkers for adult patients of bronchial asthma, atopic dermatitis and allergic rhinitis. Intractable Rare Dis Res 2018; 7:264-270. [PMID: 30560019 PMCID: PMC6290844 DOI: 10.5582/irdr.2018.01111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Bronchial asthma (BA), atopic dermatitis (AD), and allergic rhinitis (AR) are well known atopic disorders with complex etiologies. This study was undertaken to investigate the role of filaggrin, eosinophil major basic protein (MBP) and leukotriene B4 (LTB4) in patients with BA, AD, and AR. Sera from 1,246 patients with different atopic disorders and 410 normal healthy controls were collected and were evaluated for filaggrin, MBP and LTB4 by specific sandwich ELISAs, whereas immunoglobulin E (IgE) was used as a positive control for atopic patients. Serum analysis showed that filaggrin levels were remarkably high in patients with AD and in patients with multiple (mixed) atopic disorders (p < 0.001), whereas its levels in BA and AR patients were low but much higher than in normal human sera (p < 0.01). MBP levels were also high in AR, BA and mixed atopic patients, whereas AD patients showed no increase of MBP (p > 0.05). In contrast, LTB4 level was found to be significantly low in all tested atopic patients groups as compared to the levels of LTB4 present in normal human sera (p < 0.001). In conclusion, these findings support an association between filaggrin, MBP or LTB4 and atopic disorders. Our data strongly suggest that filaggrin, MBP or LTB4 might be useful in elucidating the mechanisms involved in the pathogenesis of these atopic disorders.
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Affiliation(s)
- Ghada A.
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
- Address correspondence to:Dr. Zafar Rasheed, Department of Medical Biochemistry, College of Medicine, Qassim University, P.O. Box 30109, Buraidah 51452, Saudi Arabia. E-mail:
| | - Ragaa H. Salama
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Tarek Salem
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ahmed A. Ahmed
- Research Center, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Khaled Zedan
- Department of Pediatric, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Alaa Abd El-Moniem
- Department of Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Maha Elkholy
- Department of Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ahmad A.
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
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Rasheed Z, Altorbag AA, Al-Bossier AS, Alnasser NA, Alkharraz OS, Altuwayjiri KM, Alobaid AS, Alsaif AK, Alanazi YH, Alghidani BA, Alduayji MA, Bu Mozah AA, Alsuhaibani SA. Protective potential of thymoquinone against peroxynitrite induced modifications in histone H2A: In vitro studies. Int J Biol Macromol 2018; 112:169-174. [DOI: 10.1016/j.ijbiomac.2018.01.157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/20/2018] [Accepted: 01/23/2018] [Indexed: 12/14/2022]
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Low Levels of IgG Recognizing the α-1-Antitrypsin Peptide and Its Association with Taiwanese Women with Primary Sjögren's Syndrome. Int J Mol Sci 2017; 18:ijms18122750. [PMID: 29258281 PMCID: PMC5751349 DOI: 10.3390/ijms18122750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 01/06/2023] Open
Abstract
The aim of this study was to examine oxidative stress and low level of α-1-antitrypsin (A1AT) in primary Sjögren’s syndrome (pSS), and evaluate the associated autoreactivity against unmodified and their 4-hydroxy-2-nonenal (HNE)-modified peptides with pSS. Two differentially expressed proteins, α-1-acid glycoprotein 1 (A1AG1) and A1AT, exhibited 2-fold differences, and their HNE modifications were identified by depleted-albumin and immunoglobulin G (IgG) serum protein, in-solution digestion, in-gel digestion, and nano-liquid chromatography–tandem mass spectrometry (nano-LC-MS/MS) from pSS patients and age-matched healthy controls (HCs). Furthermore, levels of proteins, confirmation of HNE modifications, HNE-protein adducts and autoreactivity against unmodified and their HNE-modified peptides were further validated. Levels of the HNE-protein adduct and A1AG1 were significantly higher in pSS patients than HCs, but levels of A1AT were significantly lower in pSS patients compared to HCs. Only the HNE modification of A1AT was confirmed. Our study suggests that elevated HNE-protein adduct, oxidative stress, level (odds ratio (OR) 4.877, p = 0.003), lowered A1AT level (OR 3.910, p = 0.010) and a decreased level of anti-A1AT50–63 IgG (OR 3.360, p = 0.010) showed an increased risk in pSS patients compared to HCs, respectively.
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Łuczaj W, Gęgotek A, Skrzydlewska E. Antioxidants and HNE in redox homeostasis. Free Radic Biol Med 2017; 111:87-101. [PMID: 27888001 DOI: 10.1016/j.freeradbiomed.2016.11.033] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 12/11/2022]
Abstract
Under physiological conditions, cells are in a stable state known as redox homeostasis, which is maintained by the balance between continuous ROS/RNS generation and several mechanisms involved in antioxidant activity. ROS overproduction results in alterations in the redox homeostasis that promote oxidative damage to major components of the cell, including the biomembrane phospholipids. Lipid peroxidation subsequently generates a diverse set of products, including α,β-unsaturated aldehydes. Of these products, 4-hydroxy-2-nonenal (HNE) is the most studied aldehyde on the basis of its involvement in cellular physiology and pathology. This review summarizes the current knowledge in the field of HNE generation, metabolism, and detoxification, as well as its interactions with various cellular macromolecules (protein, phospholipid, and nucleic acid). The formation of HNE-protein adducts enables HNE to participate in multi-step regulation of cellular metabolic pathways that include signaling and transcription of antioxidant enzymes, pro-inflammatory factors, and anti-apoptotic proteins. The most widely described roles for HNE in the signaling pathways are associated with its activation of kinases, as well as transcription factors that are responsible for redox homeostasis (Ref-1, Nrf2, p53, NFκB, and Hsf1). Depending on its level, HNE exerts harmful or protective effects associated with the induction of antioxidant defense mechanisms. These effects make HNE a key player in maintaining redox homeostasis, as well as producing imbalances in this system that participate in aging and the development of pathological conditions.
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Affiliation(s)
- Wojciech Łuczaj
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland
| | - Agnieszka Gęgotek
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland
| | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland.
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Eckl PM, Bresgen N. Genotoxicity of lipid oxidation compounds. Free Radic Biol Med 2017; 111:244-252. [PMID: 28167130 DOI: 10.1016/j.freeradbiomed.2017.02.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/28/2017] [Accepted: 02/01/2017] [Indexed: 12/23/2022]
Abstract
Lipid peroxidation, the oxidative degradation of membrane lipids by reactive oxygen species generates a large variety of breakdown products such as alkanes, aldehydes, ketones, alcohols, furans and others. Due to their reactivity aldehydes (alkanals, 2-alkenals, 2,4-alkadienals, 4-hydroxyalkenals) received a lot of attention, in particular because they can diffuse from the site of formation and interact with proteins and nucleic acids thus acting as second toxic messengers. The major aldehydic peroxidation product of membrane lipids is 4-hydroxynonenal (HNE). Since HNE and other 4-hydroxyalkenals are strong alkylating agents they have therefore been considered to be the biologically most important peroxidation products. Although initially research focused on the toxicological potential of these compounds it is now well known that they play also a crucial role in cell signaling under physiological and pathophysiological conditions. Thus, it is obvious that the biological effects will be determined by the intracellular concentrations which can trigger adaptation, DNA damage and cell death. This review will not cover all these aspects but will concentrate on the genotoxic properties of selected lipid oxidation products important in the context of pathophysiological developments together with a chapter on epigenetic modifications.
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Affiliation(s)
- Peter M Eckl
- Department of Cell Biology and Physiology, University of Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria.
| | - Nikolaus Bresgen
- Department of Cell Biology and Physiology, University of Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria
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Al-Shobaili HA, Ahmed AA, Rasheed Z. Recognition of oxidized albumin and thyroid antigens by psoriasis autoantibodies. A possible role of reactive-oxygen-species induced epitopes in chronic plaque psoriasis. Saudi Med J 2016; 36:1408-19. [PMID: 26620982 PMCID: PMC4707396 DOI: 10.15537/smj.2015.12.12612] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To investigate the role of reactive-oxygen-species (ROS) induced epitopes on human-serum-albumin (HSA) and thyroid antigens in psoriasis autoimmunity. METHODS This study was performed in the College of Medicine, Qassim University, Buraidah, Saudi Arabia between May 2014 and February 2015. The study was designed to explore the role of ROS-induced epitopes in psoriasis autoimmunity. Singlet-oxygen (or ROS)-induced epitopes on protein (ROS-epitopes-albumin) was characterized by in-vitro and in-vivo. Thyroid antigens were prepared from rabbit thyroid, and thyroglobulin was isolated from thyroid extract. Immunocross-reactions of protein-A purified anti-ROS-epitopes-HSA-immunoglobulin G (IgGs) with thyroid antigen, thyroglobulin, and their oxidized forms were determined. Binding characteristics of autoantibodies in chronic plaque psoriasis patients (n=26) against ROS-epitopes-HSA and also with native and oxidized thyroid antigens were screened, and the results were compared with age-matched controls (n=22). RESULTS The anti-ROS-epitopes-HSA-IgGs showed cross-reactions with thyroid antigen, thyroglobulin and with their oxidized forms. High degree of specific binding by psoriasis IgGs to ROS-epitopes-HSA, ROS-thyroid antigen and ROS-thyroglobulin was observed. Immunoglobulin G from normal-human-controls showed negligible binding with all tested antigens. Moreover, sera from psoriasis patients had higher levels of carbonyl contents compared with control sera. CONCLUSION Structural alterations in albumin, thyroid antigens by ROS, generate unique neo-epitopes that might be one of the factors for the induction of autoantibodies in psoriasis.
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Affiliation(s)
- Hani A Al-Shobaili
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Kingdom of Saudi Arabia. E-mail.
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Wang G, Pierangeli SS, Willis R, Gonzalez EB, Petri M, Khan MF. Significance of Lipid-Derived Reactive Aldehyde-Specific Immune Complexes in Systemic Lupus Erythematosus. PLoS One 2016; 11:e0164739. [PMID: 27749917 PMCID: PMC5066944 DOI: 10.1371/journal.pone.0164739] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 09/29/2016] [Indexed: 01/25/2023] Open
Abstract
Even though systemic lupus erythematosus (SLE) is associated with high morbidity and mortality rates among young and middle-aged women, the molecular mechanisms of disease pathogenesis are not fully understood. Previous studies from our laboratory suggested an association between oxidative stress and SLE disease activity (SLEDAI). To further assess the role of reactive oxygen species (ROS) in SLE, we examined the contribution of lipid-derived reactive aldehydes (LDRAs)-specific immune complexes in SLE. Sera from 60 SLE patients with varying SLEDAI and 32 age- and gender- matched healthy controls were analyzed for oxidative stress and related markers. Patients were divided into two groups based on their SLEDAI scores (<6 and ≥ 6). Both SLEDAI groups showed higher serum 4-hydroxynonenal (HNE)-/malondialdehyde (MDA)-protein adducts and their specific immune complexes (HNE-/MDA-specific ICs) together with IL-17 than the controls, but the levels were significantly greater in the high SLEDAI (≥ 6) group. Moreover, the serum levels of anti-oxidant enzymes Cu/Zn superoxide dismutase (SOD) and catalase (CAT) were significantly reduced in both patient groups compared to controls. Remarkably, for the first time, our data show that increased HNE-/MDA-specific ICs are positively associated with SLEDAI and elevated circulating immune complexes (CICs), suggesting a possible causal relationship among oxidative stress, LDRA-specific ICs and the development of SLE. Our findings, apart from providing firm support to an association between oxidative stress and SLE, also suggest that these oxidative stress markers, especially the HNE-/MDA-specific ICs, may be useful in evaluating the prognosis of SLE as well as in elucidating the mechanisms of disease pathogenesis.
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Affiliation(s)
- Gangduo Wang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Silvia S. Pierangeli
- Department of Internal Medicine, Division of Rheumatology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Rohan Willis
- Department of Internal Medicine, Division of Rheumatology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Emilio B. Gonzalez
- Department of Internal Medicine, Division of Rheumatology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Michelle Petri
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - M. Firoze Khan
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States of America
- * E-mail:
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Abstract
Oxidative stress has a significant impact on the development and progression of common human pathologies, including cancer, diabetes, hypertension and neurodegenerative diseases. Increasing evidence suggests that oxidative stress globally influences chromatin structure, DNA methylation, enzymatic and non-enzymatic post-translational modifications of histones and DNA-binding proteins. The effects of oxidative stress on these chromatin alterations mediate a number of cellular changes, including modulation of gene expression, cell death, cell survival and mutagenesis, which are disease-driving mechanisms in human pathologies. Targeting oxidative stress-dependent pathways is thus a promising strategy for the prevention and treatment of these diseases. We summarize recent research developments connecting oxidative stress and chromatin regulation.
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Affiliation(s)
- Sarah Kreuz
- King Abdullah University of Science & Technology (KAUST), Environmental Epigenetics Program, Thuwal 23955-6900, Saudi Arabia
| | - Wolfgang Fischle
- King Abdullah University of Science & Technology (KAUST), Environmental Epigenetics Program, Thuwal 23955-6900, Saudi Arabia
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Xiao G, Zuo X. Epigenetics in systemic lupus erythematosus. Biomed Rep 2015; 4:135-139. [PMID: 26893827 DOI: 10.3892/br.2015.556] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/04/2015] [Indexed: 01/06/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease, with mechanisms that remain to be elucidated. Previous studies have proposed that genes and environments are required for lupus to develop and flare. It has been found that epigenetics have a significant influence on SLE. The present review will concentrate on epigenetics in SLE. There are a number of studies reporting that autoreactive T cells and B cells in patients with SLE have evidence of altered patterns of DNA methylation, modifications of histones and microRNA (miRNA). Long noncoding RNAs (lncRNAs) are another type of noncoding RNAs, which have an important role in epigenetics. lncRNAs may possibly become a new hotspot in SLE.
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Affiliation(s)
- Gong Xiao
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xiaoxia Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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23
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Mir AR, Moinuddin. Glycoxidation of histone proteins in autoimmune disorders. Clin Chim Acta 2015; 450:25-30. [DOI: 10.1016/j.cca.2015.07.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/26/2015] [Accepted: 07/28/2015] [Indexed: 01/08/2023]
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Schaur RJ, Siems W, Bresgen N, Eckl PM. 4-Hydroxy-nonenal-A Bioactive Lipid Peroxidation Product. Biomolecules 2015; 5:2247-337. [PMID: 26437435 PMCID: PMC4693237 DOI: 10.3390/biom5042247] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/24/2015] [Accepted: 07/29/2015] [Indexed: 12/23/2022] Open
Abstract
This review on recent research advances of the lipid peroxidation product 4-hydroxy-nonenal (HNE) has four major topics: I. the formation of HNE in various organs and tissues, II. the diverse biochemical reactions with Michael adduct formation as the most prominent one, III. the endogenous targets of HNE, primarily peptides and proteins (here the mechanisms of covalent adduct formation are described and the (patho-) physiological consequences discussed), and IV. the metabolism of HNE leading to a great number of degradation products, some of which are excreted in urine and may serve as non-invasive biomarkers of oxidative stress.
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Affiliation(s)
- Rudolf J Schaur
- Institute of Molecular Biosciences, University of Graz, Heinrichstrasse 33a, 8010 Graz, Austria.
| | - Werner Siems
- Institute for Medical Education, KortexMed GmbH, Hindenburgring 12a, 38667 Bad Harzburg, Germany.
| | - Nikolaus Bresgen
- Division of Genetics, Department of Cell Biology, University of Salzburg, Hellbrunnerstasse 34, 5020 Salzburg, Austria.
| | - Peter M Eckl
- Division of Genetics, Department of Cell Biology, University of Salzburg, Hellbrunnerstasse 34, 5020 Salzburg, Austria.
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Oxidized tyrosinase: A possible antigenic stimulus for non-segmental vitiligo autoantibodies. J Dermatol Sci 2015; 79:203-13. [DOI: 10.1016/j.jdermsci.2015.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 12/07/2014] [Accepted: 06/18/2015] [Indexed: 12/23/2022]
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Alghasham A, Al Salloom AAM, Alghamadi ASS, Rasheed Z. Impact of anti-peroxynitrite-damaged-thymidine-monophosphate antibodies on disease activity in patients with systemic lupus erythematosus. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 34:56-68. [PMID: 25513864 DOI: 10.1080/15257770.2014.958235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Present study probes the role of peroxynitrite (ONOO(-))-modified thymidine-5'-monophosphate (TMP) in SLE patients with different disease activity scores according to the SLE Disease Activity Index (SLEDAI). Serum analysis showed significant increased number of subjects positive for anti-ONOO(-)-TMP-protein antibodies in SLE patients with different SLEDAI scores. Interestingly, the levels of these antibodies were significantly higher among SLE patients, whose SLEDAI scores were ≥20. In addition, a significant correlation was observed between the levels of anti-ONOO(-)-TMP-protein antibodies and the SLEDAI score (r = 0.595, p < 0.0001). In short, this study shows a positive association between anti-ONOO(-)-TMP-protein antibodies and SLEDAI. The stronger response observed in patients with higher SLEDAI scores suggests that anti-ONOO(-)-TMP-protein antibodies may be useful in evaluating the progression of SLE and in elucidating the mechanisms of disease pathogenesis.
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Affiliation(s)
- Abdullah Alghasham
- a Department of Pharmacology and Therapeutics, College of Medicine , Qassim University , Buraidah , KSA
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Al-Shobaili HA, Rasheed Z. Mitochondrial DNA acquires immunogenicity on exposure to nitrosative stress in patients with vitiligo. Hum Immunol 2014; 75:1053-61. [DOI: 10.1016/j.humimm.2014.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 09/02/2014] [Accepted: 09/02/2014] [Indexed: 10/24/2022]
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Alzolibani AA. Preferential recognition of hydroxyl radical-modified superoxide dismutase by circulating autoantibodies in patients with alopecia areata. Ann Dermatol 2014; 26:576-83. [PMID: 25324649 PMCID: PMC4198584 DOI: 10.5021/ad.2014.26.5.576] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 10/20/2013] [Accepted: 10/25/2013] [Indexed: 12/25/2022] Open
Abstract
Background Alopecia areata (AA) is a common form of localized, non-scarring hair loss. The cause of AA is unknown but reports suggest an autoimmune etiology, where oxygen free radicals play an important role. Objective The aim of this study was to investigate the role of a hydroxyl radicals (·OH)-modified antioxidant enzyme, superoxide dismutase (SOD), in AA autoimmunity. Methods SOD was modified by ·OH radicals. Binding characteristics of autoantibodies in AA patients (n=26) against ·OH-modified SOD (·OH-SOD) were evaluated by immunoassays and the results were compared with those of healthy, age-matched controls (n=30). The effects of ·OH radicals on immunoglobulin G (IgG) isolated from AA patients were studied. Results Highly specific binding to ·OH-SOD was observed in 32% of the samples of patient sera, whereas normal human sera showed negligible binding with either antigen. Competitive inhibition immunoassays reiterated the results from direct binding. Protein-A-purified IgG from AA patients (AA-IgG) also showed strong binding to ·OH-SOD as compared to IgG from normal human controls (p<0.001). In addition, AA-IgG from patients with alopecia universalis recognized ·OH-SOD to a greater extent than did AA-IgG from patients with the patchy, persistent type of alopecia. Furthermore, sera from AA patients had lower levels of SOD activity as compared to control sera. Conclusion This is the first report showing an association between ·OH-modified SOD and AA. These novel results demonstrate that ·OH radical-mediated changes in SOD present unique neo-epitopes that might contribute to antigen-driven antibody induction in AA.
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Affiliation(s)
- Abdullateef A Alzolibani
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Kingdom of Saudi Arabia
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Rasheed Z, Alzolibani AA, Al-Shobaili HA, Saif GB, Al Robaee AA. Biochemical and immunological studies on erythrocytes superoxide dismutase modified by nitric oxide in patients with alopecia areata: Implications in alopecia patchy persistent and alopecia universalis. Immunol Lett 2014; 160:50-57. [PMID: 24694751 DOI: 10.1016/j.imlet.2014.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 03/21/2014] [Accepted: 03/21/2014] [Indexed: 12/16/2022]
Abstract
Alopecia areata (AA) is a non-scarring hair loss disorder that ranges in severity from patchy loss of scalp hair (AA patchy persistent; AAP) to loss of all scalp and body hair (alopecia universalis; AU). The cause of AA is unknown but most evidences support that AA has an autoimmune etiology, where free radicals play an important role. This study was undertaken to investigate the role of nitric oxide (NO) modified erythrocytes superoxide dismutase (eSOD) in AA. Data revealed that NO-induced damage in eSOD caused alteration in hydrophobic or aromatic amino acids and protein carbonyl contents. NO-specific quencher, carboxyl-PTIO further reiterates NO-modifications. Specificity of antibodies from AA patients (n=26) was analyzed toward NO-modified eSOD (NO-eSOD) and their results were compared with healthy controls (n=30). Protein-A purified IgG of AA patients (AA-IgG) showed strong binding to NO-eSOD in comparison with IgG from controls. In addition, AA-IgG from patients with AU recognized NO-eSOD in a greater extent as compared to AA-IgG from patients with AAP. Furthermore, AU patients' sera contained higher levels of NO or carbonyl contents and lower levels of SOD activity compared with AAP patients' or control sera. In conclusion, this is the first study to demonstrate the role of NO-modified-eSOD in AA. Our novel results conclude that perturbations in SOD by NO presenting unique neo-epitopes that might be one of the factors for the antigen driven antibodies induction in AA. Preferential binding of NO-eSOD by AA-IgG pointed out the likely role of NO-eSOD in the initiation/progression of AA.
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Affiliation(s)
- Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia.
| | | | - Hani A Al-Shobaili
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Ghada Bin Saif
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad A Al Robaee
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
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