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Cadet J, Angelov D, Di Mascio P, Wagner JR. Contribution of oxidation reactions to photo-induced damage to cellular DNA. Photochem Photobiol 2024. [PMID: 38970297 DOI: 10.1111/php.13990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/14/2024] [Accepted: 06/15/2024] [Indexed: 07/08/2024]
Abstract
This review article is aimed at providing updated information on the contribution of immediate and delayed oxidative reactions to the photo-induced damage to cellular DNA/skin under exposure to UVB/UVA radiations and visible light. Low-intensity UVC and UVB radiations that operate predominantly through direct excitation of the nucleobases are very poor oxidizing agents giving rise to very low amounts of 8-oxo-7,8-dihydroguanine and DNA strand breaks with respect to the overwhelming bipyrimidine dimeric photoproducts. The importance of these two classes of oxidatively generated damage to DNA significantly increases together with a smaller contribution of oxidized pyrimidine bases upon UVA irradiation. This is rationalized in terms of sensitized photooxidation reactions predominantly mediated by singlet oxygen together with a small contribution of hydroxyl radical that appear to also be implicated in the photodynamic effects of the blue light component of visible light. Chemiexcitation-mediated formation of "dark" cyclobutane pyrimidine dimers in UVA-irradiated melanocytes is a recent major discovery that implicates in the initial stage, a delayed generation of reactive oxygen and nitrogen species giving rise to triplet excited carbonyl intermediate and possibly singlet oxygen. High-intensity UVC nanosecond laser radiation constitutes a suitable source of light to generate pyrimidine and purine radical cations in cellular DNA via efficient biphotonic ionization.
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Affiliation(s)
- Jean Cadet
- Département de Médecine nucléaire et Radiobiologie, Faculté de Médecine, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Dimitar Angelov
- Laboratoire de Biologie et de Modélisation de la Cellule LMBC, Ecole Normale Supérieure de Lyon, CNRS, Université de Lyon, Lyon, France
- Izmir Biomedicine and Genome Center IBG, Dokuz Eylul University, Balçova, Izmir, Turkey
| | - Paolo Di Mascio
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - J Richard Wagner
- Département de Médecine nucléaire et Radiobiologie, Faculté de Médecine, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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2
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Moe MM, Tsai M, Liu J. Effects of Intra-Base Pair Proton Transfer on Dissociation and Singlet Oxygenation of 9-Methyl-8-Oxoguanine-1-Methyl-Cytosine Base-Pair Radical Cations. Chemphyschem 2023; 24:e202300511. [PMID: 37738022 DOI: 10.1002/cphc.202300511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 09/23/2023]
Abstract
8-Oxoguanosine is the most common oxidatively generated base damage and pairs with complementary cytidine within duplex DNA. The 8-oxoguanosine-cytidine lesion, if not recognized and removed, not only leads to G-to-T transversion mutations but renders the base pair being more vulnerable to the ionizing radiation and singlet oxygen (1 O2 ) damage. Herein, reaction dynamics of a prototype Watson-Crick base pair [9MOG ⋅ 1MC]⋅+ , consisting of 9-methyl-8-oxoguanine radical cation (9MOG⋅+ ) and 1-methylcystosine (1MC), was examined using mass spectrometry coupled with electrospray ionization. We first detected base-pair dissociation in collisions with the Xe gas, which provided insight into intra-base pair proton transfer of 9MOG⋅+ ⋅ 1MC← → ${{\stackrel{ {\rightarrow} } { {\leftarrow} } } }$ [9MOG - HN1 ]⋅ ⋅ [1MC+HN3' ]+ and subsequent non-statistical base-pair separation. We then measured the reaction of [9MOG ⋅ 1MC]⋅+ with 1 O2 , revealing the two most probable pathways, C5-O2 addition and HN7 -abstraction at 9MOG. Reactions were entangled with the two forms of 9MOG radicals and base-pair structures as well as multi-configurations between open-shell radicals and 1 O2 (that has a mixed singlet/triplet character). These were disentangled by utilizing approximately spin-projected density functional theory, coupled-cluster theory and multi-referential electronic structure modeling. The work delineated base-pair structural context effects and determined relative reactivity toward 1 O2 as [9MOG - H]⋅>9MOG⋅+ >[9MOG - HN1 ]⋅ ⋅ [1MC+HN3' ]+ ≥9MOG⋅+ ⋅ 1MC.
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Affiliation(s)
- May Myat Moe
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, NY 11367, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Ave., New York, NY 10016, USA
| | - Midas Tsai
- Department of Natural Sciences, LaGuardia Community College, 31-10 Thomson Ave., Long Island City, NY 11101, USA
| | - Jianbo Liu
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, NY 11367, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Ave., New York, NY 10016, USA
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3
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Suzuki T, Ono C. Effects of additives on reaction of nucleosides with UV light in presence of uric acid and salicylic acid. J Clin Biochem Nutr 2022; 71:212-220. [DOI: 10.3164/jcbn.22-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022] Open
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4
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Benny J, Saito T, Moe MM, Liu J. Singlet O 2 Reactions with Radical Cations of 8-Bromoguanine and 8-Bromoguanosine: Guided-Ion Beam Mass Spectrometric Measurements and Theoretical Treatments. J Phys Chem A 2021; 126:68-79. [PMID: 34941276 DOI: 10.1021/acs.jpca.1c09552] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
8-Bromoguanosine is generated in vivo as a biomarker for early inflammation. Its formation and secondary reactions lead to a variety of biological sequelae at inflammation sites, most of which are mutagenic and linked to cancer. Herein, we report the formation of radical cations of 8-bromoguanine (8BrG•+) and 8-bromoguanosine (8BrGuo•+) and their reactions toward the lowest excited singlet molecular oxygen (1O2)─a common reactive oxygen species generated in biological systems. This work aims to investigate synergistic, oxidatively generated damage of 8-brominated guanine and guanosine that may occur upon ionizing radiation, one-electron oxidation, and 1O2 oxidation. Capitalizing on measurements of reaction product ions and cross sections of 8BrG•+ and 8BrGuo•+ with 1O2 using guided-ion beam tandem mass spectrometry and augmented by computational modeling of the prototype reaction system, 8BrG•+ + 1O2, using the approximately spin-projected ωB97XD/6-31+G(d,p) density functional theory, the coupled cluster DLPNO-CCSD(T)/aug-cc-pVTZ and the multireference CASPT2(21,15)/6-31G**, probable reaction products, and potential energy surfaces (PESs) were mapped out. 8BrG•+ and 8BrGuo•+ present similar exothermic oxidation products, and their reaction efficiencies with 1O2 increase with decreasing collision energy. Both single- and multireference theories predicted that the two most energetically favorable reaction pathways correspond to 1O2-addition to the C8 and C5-positions of 8BrG•+, respectively. The CASPT2-calculated PES represents the best quantitative agreement with the experimental benchmark, in that the oxidation exothermicity is close to the water hydration energy of product ions and, thus, is able to eliminate a water ligand in the product ions.
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Affiliation(s)
- Jonathan Benny
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Avenue, New York, New York 10016, United States
| | - Toru Saito
- Department of Biomedical Information Science, Graduate School of Information Science, Hiroshima City University, 3-4-1 Ozuka-Higashi, Asa-Minami-Ku, 731-3194 Hiroshima, Japan
| | - May Myat Moe
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Avenue, New York, New York 10016, United States
| | - Jianbo Liu
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Avenue, New York, New York 10016, United States
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5
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Ravanat JL, Dumont E. Reactivity of Singlet Oxygen with DNA, an Update. Photochem Photobiol 2021; 98:564-571. [PMID: 34931317 DOI: 10.1111/php.13581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/13/2021] [Indexed: 11/28/2022]
Abstract
The reactivity of singlet oxygen with DNA constituents and in particular with the guanine base has been studied during more than four decades but the exact mechanisms by which such a reactive oxygen species reacts with DNA is still a matter of debate. In this review article, a summary of the data that were obtained from several laboratories and using complementary experimental and theoretical approaches are presented. Reaction mechanisms of 1 O2 with guanine and its oxidation product 8-oxo7,8-dihydroguanine are presented both at the nucleoside level and when the base is inserted into DNA since significant differences have been observed. Efforts have been made to propose tentative mechanisms to explain the conflicting results that were sometimes reported and hypotheses have been put forward to tentatively explain still contradictory observations.
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Affiliation(s)
- Jean-Luc Ravanat
- CEA, CNRS, CIBEST, SyMMES, Univ. Grenoble Alpes, Grenoble, France
| | - Elise Dumont
- ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, Univ Lyon, Lyon, France.,Institut Universitaire de France, Paris, France
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6
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Moe MM, Tsai M, Liu J. Singlet Oxygen Oxidation of the Radical Cations of 8-Oxo-2'-deoxyguanosine and Its 9-Methyl Analogue: Dynamics, Potential Energy Surface, and Products Mediated by C5-O 2 -Addition. Chempluschem 2021; 86:1243-1254. [PMID: 34268890 DOI: 10.1002/cplu.202100238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/02/2021] [Indexed: 01/24/2023]
Abstract
8-Oxo-2'-deoxyguanosine (OG) is the most common DNA lesion. Notably, OG becomes more susceptible to oxidative damage than the undamaged nucleoside, forming mutagenic products in vivo. Herein the reactions of singlet O2 with the radical cations of 8-oxo-2'-deoxyguanosine (OG.+ ) and 9-methyl-8-oxoguanine (9MOG.+ ) were investigated using ion-molecule scattering mass spectrometry, from which barrierless, exothermic O2 -addition products were detected for both reaction systems. Corroborated by static reaction potential energy surface constructed using multi-reference CASPT2 theory and molecular dynamics simulated in the presence of the reactants' kinetic and internal energies, the C5-terminal O2 -addition was pinpointed as the most probable reaction pathway. By elucidating the reaction mechanism, kinetics and dynamics, and reaction products and energetics, this work constitutes the first report unraveling the synergetic damage of OG by ionizing radiation and singlet O2 .
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Affiliation(s)
- May Myat Moe
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, NY, 11367, USA.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Ave., New York, NY, 10016, USA
| | - Midas Tsai
- Department of Natural Sciences, LaGuardia Community College, 31-10 Thomson Ave., Long Island City, NY, 11101, USA
| | - Jianbo Liu
- Department of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, NY, 11367, USA.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 5th Ave., New York, NY, 10016, USA
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7
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Zhang X, Li J, Yao MC, Fan WY, Yang CW, Yuan L, Sheng GP. Unrecognized Contributions of Dissolved Organic Matter Inducing Photodamages to the Decay of Extracellular DNA in Waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1614-1622. [PMID: 31976657 DOI: 10.1021/acs.est.9b06029] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Extracellular DNA (eDNA), which is derived from lysis or secretion of cells, is ubiquitous in various environments and crucial for gene dissemination, bacterial metabolism, biofilm integrity, and aquatic monitoring. However, these processes are largely influenced by damage to eDNA. Photodamage to eDNA, one of the most important types of DNA damage in natural waters, thus far remains unclear. In particular, the roles of the ubiquitous dissolved organic matter (DOM) in this process have yet to be determined. In this study, eDNA photodamage, including both deoxynucleoside damage and strand breaks, proved to be significantly influenced by DOM. DOM competed with eDNA for photons to inhibit the direct photodamage of eDNA. Nevertheless, DOM was photosensitized to produce reactive oxygen species (ROS) (i.e., hydroxyl radicals (·OH) and singlet oxygen (1O2)) to enhance the indirect photodamage of eDNA. The ·OH induced damage to four deoxynucleosides and strand breaks, and the 1O2 substantially enhanced deoxyguanosine damage. The presence of DOM changed the main photodamage products of deoxynucleosides, additional oxidation products induced by ROS formed besides pyrimidine dimers caused by UV. Results indicate that DOM-mediated indirect photodamage contributed significantly to eDNA photodamage in most water bodies. This study revealed the previously unrecognized crucial role of DOM in the decay of eDNA in waters.
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Affiliation(s)
- Xin Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jing Li
- School of Life Sciences , University of Science and Technology of China , Hefei 230026 , China
| | - Mu-Cen Yao
- School of Life Sciences , University of Science and Technology of China , Hefei 230026 , China
| | - Wen-Yuan Fan
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Chuan-Wang Yang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Li Yuan
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Guo-Ping Sheng
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
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8
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Di Mascio P, Martinez GR, Miyamoto S, Ronsein GE, Medeiros MHG, Cadet J. Singlet Molecular Oxygen Reactions with Nucleic Acids, Lipids, and Proteins. Chem Rev 2019; 119:2043-2086. [DOI: 10.1021/acs.chemrev.8b00554] [Citation(s) in RCA: 253] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508-000, São Paulo, SP Brazil
| | - Glaucia R. Martinez
- Departamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná, 81531-990 Curitiba, PR, Brazil
| | - Sayuri Miyamoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508-000, São Paulo, SP Brazil
| | - Graziella E. Ronsein
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508-000, São Paulo, SP Brazil
| | - Marisa H. G. Medeiros
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508-000, São Paulo, SP Brazil
| | - Jean Cadet
- Département de Médecine Nucléaire et Radiobiologie, Faculté de Médecine des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, J1H 5N4 Québec, Canada
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9
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Cadet J, Douki T. Formation of UV-induced DNA damage contributing to skin cancer development. Photochem Photobiol Sci 2018; 17:1816-1841. [PMID: 29405222 DOI: 10.1039/c7pp00395a] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
UV-induced DNA damage plays a key role in the initiation phase of skin cancer. When left unrepaired or when damaged cells are not eliminated by apoptosis, DNA lesions express their mutagneic properties, leading to the activation of proto-oncogene or the inactivation of tumor suppression genes. The chemical nature and the amount of DNA damage strongly depend on the wavelength of the incident photons. The most energetic part of the solar spectrum at the Earth's surface (UVB, 280-320 nm) leads to the formation of cyclobutane pyrimidine dimers (CPDs) and pyrimidine (6-4) pyrimidone photoproducts (64PPs). Less energetic but 20-times more intense UVA (320-400 nm) also induces the formation of CPDs together with a wide variety of oxidatively generated lesions such as single strand breaks and oxidized bases. Among those, 8-oxo-7,8-dihydroguanine (8-oxoGua) is the most frequent since it can be produced by several mechanisms. Data available on the respective yield of DNA photoproducts in cells and skin show that exposure to sunlight mostly induces pyrimidine dimers, which explains the mutational signature found in skin tumors, with lower amounts of 8-oxoGua and strand breaks. The present review aims at describing the basic photochemistry of DNA and discussing the quantitative formation of the different UV-induced DNA lesions reported in the literature. Additional information on mutagenesis, repair and photoprotection is briefly provided.
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Affiliation(s)
- Jean Cadet
- Département de Médecine Nucléaire et Radiobiologie, Faculté de Médecine, 3001 12e Avenue Nord, Université de Sherbrooke, Sherbrooke, Québec JIH 5N4, Canada.
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10
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Martinez GR, Brum H, Sassaki GL, de Souza LM, Loureiro APDM, de Medeiros MHG, Di Mascio P. Oxidation of 1-N2-etheno-2'-deoxyguanosine by singlet molecular oxygen results in 2'-deoxyguanosine: a pathway to remove exocyclic DNA damage? Biol Chem 2018; 399:859-867. [PMID: 29664729 DOI: 10.1515/hsz-2017-0337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/06/2018] [Indexed: 01/16/2023]
Abstract
Exocyclic DNA adducts are considered as potential tools for the study of oxidative stress-related diseases, but an important aspect is their chemical reactivity towards oxidant species. We report here the oxidation of 1-N2-etheno-2'-deoxyguanosine (1,N2-εdGuo) by singlet molecular oxygen (1O2) generated by a non-ionic water-soluble endoperoxide [N,N'-di(2,3-dihydroxypropyl)-1,4-naphthalenedipropanamide endoperoxide (DHPNO2)] and its corresponding oxygen isotopically labeled [18O]-[N,N'-di(2,3-dihydroxypropyl)-1,4- naphthalenedipropanamide endoperoxide (DHPN18O2)], and by photosensitization with two different photosensitizers [methylene blue (MB) and Rose Bengal (RB)]. Products detection and characterization were achieved using high performance liquid chromatography (HPLC) coupled to ultraviolet and electrospray ionization (ESI) tandem mass spectrometry, and nuclear magnetic resonance (NMR) analyses. We found that dGuo is regenerated via reaction of 1O2 with the ε-linkage, and we propose a dioxetane as an intermediate, which cleaves and loses the aldehyde groups as formate residues, or alternatively, it generates a 1,2-ethanediol adduct. We also report herein the quenching rate constants of 1O2 by 1,N2-εdGuo and other etheno modified nucleosides. The rate constant (kt) values obtained for etheno nucleosides are comparable to the kt of dGuo. From these results, we suggest a possible role of 1O2 in the cleanup of etheno adducts by regenerating the normal base.
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Affiliation(s)
- Glaucia Regina Martinez
- Departamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, UFPR, CP 19046, CEP 81531-980, Curitiba PR, Brazil
| | - Hulyana Brum
- Departamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, UFPR, CP 19046, CEP 81531-980, Curitiba PR, Brazil
| | - Guilherme Lanzi Sassaki
- Departamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, UFPR, CP 19046, CEP 81531-980, Curitiba PR, Brazil
| | - Lauro Mera de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba PR, Brazil
| | - Ana Paula de Melo Loureiro
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo (USP), CEP 05508-000, São Paulo SP, Brazil
| | - Marisa Helena Gennari de Medeiros
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil
| | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil
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11
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Cadet J, Davies KJA, Medeiros MH, Di Mascio P, Wagner JR. Formation and repair of oxidatively generated damage in cellular DNA. Free Radic Biol Med 2017; 107:13-34. [PMID: 28057600 PMCID: PMC5457722 DOI: 10.1016/j.freeradbiomed.2016.12.049] [Citation(s) in RCA: 215] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 12/27/2016] [Accepted: 12/31/2016] [Indexed: 12/18/2022]
Abstract
In this review article, emphasis is placed on the critical survey of available data concerning modified nucleobase and 2-deoxyribose products that have been identified in cellular DNA following exposure to a wide variety of oxidizing species and agents including, hydroxyl radical, one-electron oxidants, singlet oxygen, hypochlorous acid and ten-eleven translocation enzymes. In addition, information is provided about the generation of secondary oxidation products of 8-oxo-7,8-dihydroguanine and nucleobase addition products with reactive aldehydes arising from the decomposition of lipid peroxides. It is worth noting that the different classes of oxidatively generated DNA damage that consist of single lesions, intra- and interstrand cross-links were unambiguously assigned and quantitatively detected on the basis of accurate measurements involving in most cases high performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry. The reported data clearly show that the frequency of DNA lesions generated upon severe oxidizing conditions, including exposure to ionizing radiation is low, at best a few modifications per 106 normal bases. Application of accurate analytical measurement methods has also allowed the determination of repair kinetics of several well-defined lesions in cellular DNA that however concerns so far only a restricted number of cases.
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Affiliation(s)
- Jean Cadet
- Département de médecine nucléaire et radiobiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada J1H 5N4.
| | - Kelvin J A Davies
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, The University of Southern California, Los Angeles, CA 90089-0191, United States; Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, The University of Southern California, Los Angeles, CA 90089-0191, United States
| | - Marisa Hg Medeiros
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508 000 São Paulo, SP, Brazil
| | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05508 000 São Paulo, SP, Brazil
| | - J Richard Wagner
- Département de médecine nucléaire et radiobiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada J1H 5N4
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12
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Sun Y, Lu W, Liu J. Exploration of the Singlet O2 Oxidation of 8-Oxoguanine by Guided-Ion Beam Scattering and Density Functional Theory: Changes of Reaction Intermediates, Energetics, and Kinetics upon Protonation/Deprotonation and Hydration. J Phys Chem B 2017; 121:956-966. [DOI: 10.1021/acs.jpcb.6b11464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yan Sun
- Department
of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York 10016, United States
| | - Wenchao Lu
- Department
of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York 10016, United States
| | - Jianbo Liu
- Department
of Chemistry and Biochemistry, Queens College of the City University of New York, 65-30 Kissena Blvd., Queens, New York 11367, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Ave., New York, New York 10016, United States
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13
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Gomez-Mendoza M, Banyasz A, Douki T, Markovitsi D, Ravanat JL. Direct Oxidative Damage of Naked DNA Generated upon Absorption of UV Radiation by Nucleobases. J Phys Chem Lett 2016; 7:3945-3948. [PMID: 27642654 DOI: 10.1021/acs.jpclett.6b01781] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
It has been shown that in addition to formation of pyrimidine dimers, UV irradiation of DNA in the absence of photosensitizer also induces formation of 8-oxo-7,8-dihydro-2'-deoxyguanosine, but the mechanism of formation of that oxidized base has not been clearly established. In the present study, we provide an unambiguous demonstration that absorption of UVC and UVB radiation by the nucleobases induces DNA oxidation via a direct process (one-electron oxidation) and not singlet oxygen. Evidence arose from the fact that polyamine-guanine adducts that are specifically produced through the transient formation of guanine radical cation are generated following UV irradiation of DNA in the presence of a polyamine even in the absence of any photosensitizer.
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Affiliation(s)
- Miguel Gomez-Mendoza
- Université Grenoble Alpes, INAC-SCIB , F-38000 Grenoble, France
- CEA, INAC-SyMMES Laboratoire des Lésions des Acides Nucléiques , F-38000 Grenoble, France
| | - Akos Banyasz
- LIDYL, CEA, CNRS, Université Paris Saclay , F-91191 Gif-sur-Yvette, France
| | - Thierry Douki
- Université Grenoble Alpes, INAC-SCIB , F-38000 Grenoble, France
- CEA, INAC-SyMMES Laboratoire des Lésions des Acides Nucléiques , F-38000 Grenoble, France
| | - Dimitra Markovitsi
- LIDYL, CEA, CNRS, Université Paris Saclay , F-91191 Gif-sur-Yvette, France
| | - Jean-Luc Ravanat
- Université Grenoble Alpes, INAC-SCIB , F-38000 Grenoble, France
- CEA, INAC-SyMMES Laboratoire des Lésions des Acides Nucléiques , F-38000 Grenoble, France
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Di Mascio P, Martinez GR, Miyamoto S, Ronsein GE, Medeiros MH, Cadet J. Singlet molecular oxygen: Düsseldorf – São Paulo, the Brazilian connection. Arch Biochem Biophys 2016; 595:161-75. [DOI: 10.1016/j.abb.2015.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 07/28/2015] [Accepted: 11/10/2015] [Indexed: 12/12/2022]
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15
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Jena NR, Mishra PC. Normal and reverse base pairing of Iz and Oz lesions in DNA: structural implications for mutagenesis. RSC Adv 2016. [DOI: 10.1039/c6ra14031a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
During replication, incorporation of G opposite Oz lesion is mainly responsible for G to C mutations in DNA.
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Affiliation(s)
- N. R. Jena
- Discipline of Natural Sciences
- Indian Institute of Information Technology
- Design and Manufacturing
- Jabalpur-482005
- India
| | - P. C. Mishra
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
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Dumont E, Grüber R, Bignon E, Morell C, Moreau Y, Monari A, Ravanat JL. Probing the reactivity of singlet oxygen with purines. Nucleic Acids Res 2015; 44:56-62. [PMID: 26656495 PMCID: PMC4705671 DOI: 10.1093/nar/gkv1364] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/24/2015] [Indexed: 11/30/2022] Open
Abstract
The reaction of singlet molecular oxygen with purine DNA bases is investigated by computational means. We support the formation of a transient endoperoxide for guanine and by classical molecular dynamics simulations we demonstrate that the formation of this adduct does not affect the B-helicity. We thus identify the guanine endoperoxide as a key intermediate, confirming a low-temperature nuclear magnetic resonance proof of its existence, and we delineate its degradation pathway, tracing back the preferential formation of 8-oxoguanine versus spiro-derivates in B-DNA. Finally, the latter oxidized 8-oxodGuo product exhibits an almost barrierless reaction profile, and hence is found, coherently with experience, to be much more reactive than guanine itself. On the contrary, in agreement with experimental observations, singlet-oxygen reactivity onto adenine is kinetically blocked by a higher energy transition state.
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Affiliation(s)
- Elise Dumont
- Laboratoire de Chimie, UMR 5182, Ecole Normale Supérieure de Lyon, Lyon France
| | - Raymond Grüber
- Laboratoire de Chimie, UMR 5182, Ecole Normale Supérieure de Lyon, Lyon France
| | - Emmanuelle Bignon
- Laboratoire de Chimie, UMR 5182, Ecole Normale Supérieure de Lyon, Lyon France Institut des Sciences Analytiques, Université de Lyon 1 and CNRS, Villeurbanne, France
| | - Christophe Morell
- Institut des Sciences Analytiques, Université de Lyon 1 and CNRS, Villeurbanne, France
| | | | - Antonio Monari
- Theory-Modeling-Simulation, SRSMC, Université de Lorraine Nancy, Vandoeuvre-lès-Nancy, France CNRS, Theory-Modeling-Simulation, SRSMC, Vandoeuvre-lès-Nancy, France
| | - Jean-Luc Ravanat
- INAC-SCIB, Université Grenoble Alpes, F-38000 Grenoble, France CEA, INAC-SCIB-LAN, F-38000 Grenoble, France
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Glutathione modifies the oxidation products of 2'-deoxyguanosine by singlet molecular oxygen. Arch Biochem Biophys 2015; 586:33-44. [PMID: 26427352 DOI: 10.1016/j.abb.2015.09.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 09/20/2015] [Accepted: 09/25/2015] [Indexed: 11/21/2022]
Abstract
The oxidation of the free nucleoside 2'-deoxyguanosine (dGuo) by singlet molecular oxygen ((1)O2) has been studied over the three last decades due to the major role of DNA oxidation products in process such as ageing, mutation and carcinogenesis. In the present work we investigated the dGuo oxidation by (1)O2 in the presence of the important low molecular antioxidant, glutathione, in its reduced (GSH) and oxidized (GSSG) forms. There were applied different conditions of concentration, pH, time of incubation, and the use of a [(18)O]-labeled thermolabile endoperoxide naphthalene derivative as a source of [(18)O]-labeled (1)O2. Data was obtained through high performance liquid chromatography (HPLC) and HPLC coupled to micrOTOF Q-II analysis of the main oxidation products: the diastereomers of spiroiminodihydantoin-2'-deoxyribonucleosides (dSp) and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo). An intriguing result was that 8-oxodGuo levels increased by 100 fold when dGuo was oxidized by (1)O2 in the presence of GSH and by 2 fold in the presence of GSSG, while dSp levels dropped to zero for both conditions. All data from dGuo, 8-oxodGuo and dSp quantification together with the analysis of residual GSH/GSSG content in each sample strongly suggest that glutathione modifies the mechanism of dGuo oxidation by (1)O2 by disfavoring the pathway of dSp formation.
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Patrício ES, Prado FM, da Silva RP, Carvalho LAC, Prates MVC, Dadamos T, Bertotti M, Di Mascio P, Kettle AJ, Meotti FC. Chemical Characterization of Urate Hydroperoxide, A Pro-oxidant Intermediate Generated by Urate Oxidation in Inflammatory and Photoinduced Processes. Chem Res Toxicol 2015. [PMID: 26207674 DOI: 10.1021/acs.chemrestox.5b00132] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Urate hydroperoxide is a strong oxidant generated by the combination of urate free radical and superoxide. The formation of urate hydroperoxide as an intermediate in urate oxidation is potentially responsible for the pro-oxidant effects of urate in inflammatory disorders, protein degradation, and food decomposition. To understand the molecular mechanisms that sustain the harmful effects of urate in inflammatory and oxidative stress related conditions, we report a detailed structural characterization and reactivity of urate hydroperoxide toward biomolecules. Urate hydroperoxide was synthesized by photo-oxidation and by a myeloperoxidase/hydrogen peroxide/superoxide system. Multiple reaction monitoring (MRM) and MS(3) ion fragmentation revealed that urate hydroperoxide from both sources has the same chemical structure. Urate hydroperoxide has a maximum absorption at 308 nm, ε308nm = 6.54 ± 0.38 × 10(3) M(-1) cm(-1). This peroxide decays spontaneously with a rate constant of k = 2.80 ± 0.18 × 10(-4) s(-1) and a half-life of 41 min at 22 °C. Urate hydroperoxide undergoes electrochemical reduction at potential values less negative than -0.5 V (versus Ag/AgCl). When incubated with taurine, histidine, tryptophan, lysine, methionine, cysteine, or glutathione, urate hydroperoxide reacted only with methionine, cysteine, and glutathione. The oxidation of these molecules occurred by a two-electron mechanism, generating the alcohol, hydroxyisourate. No adduct between cysteine or glutathione and urate hydroperoxide was detected. The second-order rate constant for the oxidation of glutathione by urate hydroperoxide was 13.7 ± 0.8 M(-1) s(-1). In conclusion, the oxidation of sulfur-containing biomolecules by urate hydroperoxide is likely to be a mechanism by which the pro-oxidant and damaging effects of urate are mediated in inflammatory and photo-oxidizing processes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Anthony J Kettle
- §Centre for Free Radical Research, Department of Pathology, University of Otago, Christchurch, 8140 Christchurch, New Zealand
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Pellosi MC, Suzukawa AA, Scalfo AC, Di Mascio P, Martins Pereira CP, de Souza Pinto NC, de Luna Martins D, Martinez GR. Effects of the melanin precursor 5,6-dihydroxy-indole-2-carboxylic acid (DHICA) on DNA damage and repair in the presence of reactive oxygen species. Arch Biochem Biophys 2014; 557:55-64. [PMID: 24893147 DOI: 10.1016/j.abb.2014.05.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 05/15/2014] [Accepted: 05/26/2014] [Indexed: 01/26/2023]
Abstract
Eumelanin is a heterogeneous polymer composed of 5,6-dihydroxyindole-2-carboxylic acid (DHICA) and 5,6-dihydroxyindole (DHI). Studies have shown that DHICA promotes single strand breaks in plasmid DNA exposed to ultraviolet B radiation (UVB, 313 nm) and in DNA from human keratinocytes exposed to ultraviolet A radiation (UVA, 340-400 nm). Singlet molecular oxygen ((1)O2) is the main reactive species formed by UVA radiation on the skin. In this context, we now report that DHICA can cause single strand breaks in plasmid DNA even in the absence of light radiation. Interestingly, when DHICA was pre-oxidized by (1)O2, it lost this harmful capacity. It was also found that DHICA could interact with DNA, disturbing Fpg activity and decreasing its recognition of lesions by ∼50%. Additionally, the free nucleoside deoxyguanosine (dGuo) was used to evaluate whether DHICA would interfere with the formation of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo) and spiroiminodihydantoin (dSp) by (1)O2 or with the formation of 8-oxodGuo by hydroxyl radical (OH). We observed that when dGuo was oxidized by (1)O2 in the presence of DHICA, 8-oxodGuo formation was increased. However, when dGuo was oxidized by OH in the presence of DHICA, 8-oxodGuo levels were lower than in the absence of the precursor. Overall, our data reveal an important role for this eumelanin precursor in both the promotion and the protection of DNA damage and imply that it can impair DNA repair.
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Affiliation(s)
- Maria Carolina Pellosi
- Programa de Pós-graduação em Ciências (Bioquímica), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Andréia Akemi Suzukawa
- Programa de Pós-graduação em Ciências (Bioquímica), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | | | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | | | - Glaucia Regina Martinez
- Programa de Pós-graduação em Ciências (Bioquímica), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, PR, Brazil.
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Ko SH, Lee JK, Lee HJ, Ye SK, Kim HS, Chung MH. 8-Oxo-2′-deoxyguanosine ameliorates features of metabolic syndrome in obese mice. Biochem Biophys Res Commun 2014; 443:610-6. [DOI: 10.1016/j.bbrc.2013.12.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 12/03/2013] [Indexed: 12/30/2022]
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Lee JK, Ko SH, Ye SK, Chung MH. 8-Oxo-2′-deoxyguanosine ameliorates UVB-induced skin damage in hairless mice by scavenging reactive oxygen species and inhibiting MMP expression. J Dermatol Sci 2013; 70:49-57. [DOI: 10.1016/j.jdermsci.2013.01.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 01/21/2013] [Accepted: 01/28/2013] [Indexed: 01/21/2023]
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Agnez-Lima LF, Melo JTA, Silva AE, Oliveira AHS, Timoteo ARS, Lima-Bessa KM, Martinez GR, Medeiros MHG, Di Mascio P, Galhardo RS, Menck CFM. DNA damage by singlet oxygen and cellular protective mechanisms. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2012; 751:15-28. [PMID: 22266568 DOI: 10.1016/j.mrrev.2011.12.005] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 12/14/2011] [Accepted: 12/21/2011] [Indexed: 12/23/2022]
Abstract
Reactive oxygen species, as singlet oxygen ((1)O(2)) and hydrogen peroxide, are continuously generated by aerobic organisms, and react actively with biomolecules. At excessive amounts, (1)O(2) induces oxidative stress and shows carcinogenic and toxic effects due to oxidation of lipids, proteins and nucleic acids. Singlet oxygen is able to react with DNA molecule and may induce G to T transversions due to 8-oxodG generation. The nucleotide excision repair, base excision repair and mismatch repair have been implicated in the correction of DNA lesions induced by (1)O(2) both in prokaryotic and in eukaryotic cells. (1)O(2) is also able to induce the expression of genes involved with the cellular responses to oxidative stress, such as NF-κB, c-fos and c-jun, and genes involved with tissue damage and inflammation, as ICAM-1, interleukins 1 and 6. The studies outlined in this review reinforce the idea that (1)O(2) is one of the more dangerous reactive oxygen species to the cells, and deserves our attention.
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Affiliation(s)
- Lucymara F Agnez-Lima
- Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
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Carneiro CD, Amorim JC, Cadena SM, Noleto GR, Di Mascio P, Rocha ME, Martinez GR. Effect of flavonoids on 2′-deoxyguanosine and DNA oxidation caused by singlet molecular oxygen. Food Chem Toxicol 2010; 48:2380-7. [DOI: 10.1016/j.fct.2010.05.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 04/28/2010] [Accepted: 05/27/2010] [Indexed: 12/31/2022]
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Cooke MS, Duarte TL, Cooper D, Chen J, Nandagopal S, Evans MD. Combination of azathioprine and UVA irradiation is a major source of cellular 8-oxo-7,8-dihydro-2′-deoxyguanosine. DNA Repair (Amst) 2008; 7:1982-9. [DOI: 10.1016/j.dnarep.2008.08.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Revised: 08/15/2008] [Accepted: 08/19/2008] [Indexed: 01/29/2023]
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26
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Grey CE, Adlercreutz P. Time and concentration dependence of Fenton-induced oxidation of dG. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 25:259-78. [PMID: 16629119 DOI: 10.1080/15257770500446956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The influence of incubation time and Fenton reagent concentrations was investigated on the oxidation of 2'-deoxyguanosine. The compounds identified and quantified, through use of an LC-MS/MS system, were 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) and 8,5'-cyclo-2'-deoxyguanosine (8,5'cyclodG) and the secondary oxidation products guanidinohydantoin and dehydro-guanidinohydantoin. 8-oxodG and 8,5' cyclodG formed very quickly, reaching a maximum rapidly, but with 8-oxodG a rapid decline occurred thereafter due to its further oxidation into the secondary products, which formed more slowly. Due to the better stability, 8,5' cyclodG correlated better with the general level of oxidation than 8-oxodG. The results emphasize the advantages of measuring other oxidation adducts than 8-oxodG alone.
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Affiliation(s)
- Carl Elovson Grey
- Department of Biotechnology, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
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Xu X, Muller JG, Ye Y, Burrows CJ. DNA−Protein Cross-links between Guanine and Lysine Depend on the Mechanism of Oxidation for Formation of C5 Vs C8 Guanosine Adducts. J Am Chem Soc 2007; 130:703-9. [DOI: 10.1021/ja077102a] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiaoyun Xu
- Department of Chemistry, University of Utah, 315 S. 1400 East, Salt Lake City, Utah 84112-0850
| | - James G. Muller
- Department of Chemistry, University of Utah, 315 S. 1400 East, Salt Lake City, Utah 84112-0850
| | - Yu Ye
- Department of Chemistry, University of Utah, 315 S. 1400 East, Salt Lake City, Utah 84112-0850
| | - Cynthia J. Burrows
- Department of Chemistry, University of Utah, 315 S. 1400 East, Salt Lake City, Utah 84112-0850
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Douki T. UV-induced DNA Damage. BIOPHYSICAL AND PHYSIOLOGICAL EFFECTS OF SOLAR RADIATION ON HUMAN SKIN 2007. [DOI: 10.1039/9781847557957-00225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Thierry Douki
- Laboratoire “Lésions des Acides Nucléiques” Service de Chimie Inorganique et Biologique Grenoble France
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Rodrigues T, de França LP, Kawai C, de Faria PA, Mugnol KCU, Braga FM, Tersariol ILS, Smaili SS, Nantes IL. Protective Role of Mitochondrial Unsaturated Lipids on the Preservation of the Apoptotic Ability of Cytochrome c Exposed to Singlet Oxygen. J Biol Chem 2007; 282:25577-87. [PMID: 17567586 DOI: 10.1074/jbc.m700009200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytochrome c-mediated apoptosis in cells submitted to photodynamic therapy raises the question about the ability of photodynamically oxidized cytochrome c (cytc405) to trigger apoptosis as well as the effect of membranes on protein photo-oxidation. Cytochrome c was submitted to irradiation in the presence of MB+ in phosphate buffer and in the presence of four types of phosphatidylcholine/phosphatidylethanolamine/cardiolipin (PCPECL) liposomes (50/30/20%): totally saturated lipids (tsPCPECL), totally unsaturated lipids (tuPCPECL), partially unsaturated (80%) lipids, with unsaturation in the PC and PE content (puPCPECL80), and partially unsaturated (20%) lipids, with unsaturation in the CL content (puPCPECL20). Cytc405 was formed by irradiation in buffered water and in tsPCPECL and puPCPECL20 liposomes. In the presence of tuPCPECL and puPCPECL80, cytochrome c was protected from photodynamic damage (lipid-protected cytochrome c). In CL liposomes, 25% unsaturated lipids were enough to protect cytochrome c. The presence of unsaturated lipids, in amounts varying according to the liposome composition, are crucial to protect cytochrome c. Interesting findings corroborating the unsaturated lipids as cytochrome c protectors were obtained from the analysis of the lipid-oxidized derivatives of the samples. Native cytochrome c, lipid-protected cytochrome c, and cytc405 were microinjected in aortic smooth muscle cells. Apoptosis, characterized by nucleus blebbing and chromatin condensation, was detected in cells loaded with native and lipid protected cytochrome c but not in cells loaded with cytc405. These results suggest that photodynamic therapy-promoted apoptosis is feasible due to the protective effect of the mitochondrial lipids on the cytochrome c structure and function.
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Affiliation(s)
- Tiago Rodrigues
- Centro Interdisciplinar de Investigação Bioquímica Universidade de Mogi das Cruzes, Prédio I, Sala 1S-15, Mogi das Cruzes 08780-911, São Paulo, Brazil
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Cadet J, Ravanat JL, Martinez GR, Medeiros MHG, Di Mascio P. Singlet oxygen oxidation of isolated and cellular DNA: product formation and mechanistic insights. Photochem Photobiol 2007; 82:1219-25. [PMID: 16808595 DOI: 10.1562/2006-06-09-ir-914] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This survey focuses on recent aspects of the singlet oxygen oxidation of the guanine moiety of nucleosides, oligonucleotides, isolated and cellular DNA that has been shown to be the exclusive DNA target for this biologically relevant photogenerated oxidant. A large body of mechanistic data is now available from studies performed on nucleosides in both aprotic solvents and aqueous solutions. A common process to both reaction conditions is the formation of 8-oxo-7,8-dihydroguanine by reduction of 8-hydroperoxyguanine that arises from the rearrangement of initially formed endoperoxide across the 4,8-bond of the purine moiety. However, in organic solvent the hydroperoxide is converted as a major degradation pathway into a dioxirane that subsequently decomposes into a complex pattern of oxidation products. A different reaction that involved the formation of a highly reactive quinonoid intermediate consecutively to the loss of a water molecule from the 8-hydroperoxide has been shown to occur in aqueous solution. Subsequent addition of a water molecule at C5 leads to the generation of a spiroiminodihy-dantoin compound via a rearrangement that involves an acyl shift. However, in both isolated and cellular DNA the latter decomposition pathway is at the best a minor process, because only 8-oxo-7,8-dihydroguanine has been found to be generated. It is interesting to point out that singlet oxygen has been shown to contribute predominantly to the formation of 8-oxo-7,8-dihydroguanine in the DNA of bacterial and human cells upon exposure to UVA radiation. It may be added that the formation of secondary singlet-oxygen oxidation products of 8-oxo-7,8-dihydroguanine, including spiroiminodihydantoin and oxaluric acid that were characterized in nucleosides and oligonucleotide, respectively, have not yet been found in cellular DNA.
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Affiliation(s)
- Jean Cadet
- Laboratoire Lésions des Acides Nucléiques, DRFMC/SCIB-UMR-E No. 3 (CEA/UJF), CEA/Grenoble, F-38054 Grenoble Cedex 9, France.
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Alves de Almeida E, Celso Dias Bainy A, Paula de Melo Loureiro A, Regina Martinez G, Miyamoto S, Onuki J, Fujita Barbosa L, Carrião Machado Garcia C, Manso Prado F, Eliza Ronsein G, Alexandre Sigolo C, Barbosa Brochini C, Maria Gracioso Martins A, Helena Gennari de Medeiros M, Di Mascio P. Oxidative stress in Perna perna and other bivalves as indicators of environmental stress in the Brazilian marine environment: Antioxidants, lipid peroxidation and DNA damage. Comp Biochem Physiol A Mol Integr Physiol 2007; 146:588-600. [PMID: 16626983 DOI: 10.1016/j.cbpa.2006.02.040] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2005] [Revised: 02/25/2006] [Accepted: 02/25/2006] [Indexed: 11/26/2022]
Abstract
Oxidative stress can take place in marine bivalves under a series of environmental adverse conditions. The study of different systems related to oxidative stress in these organisms can give important information about their physiological status and also about environmental health. Bivalves have been proposed as good sentinel organisms in pollution monitoring studies through the analysis of biochemical biomarkers, and most of the biomarkers analyzed are those related to oxidative stress. However, it is very important to know how other environmental factors not associated to the presence of pollutants might affect these parameters. We have studied a series of mechanisms related to oxidative stress in mussels which inhabit the Brazilian coast, especially in Perna perna species, subjected to different stress conditions, such as the exposure to different contaminants in the laboratory and in the field, the exposure of mussels to air and re-submersion, simulating the tidal oscillations, and in mussels collected at different seasons. Both oxidative damage levels and antioxidant defense systems were strongly affected by the different environmental stress. This review summarizes the data obtained in some studies carried out in bivalves from the Brazilian coast.
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Affiliation(s)
- Eduardo Alves de Almeida
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26.077, 05513-970, São Paulo, Brazil
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Karwowski B, Dupeyrat F, Bardet M, Ravanat JL, Krajewski P, Cadet J. Nuclear magnetic resonance studies of the 4R and 4S diastereomers of spiroiminodihydantoin 2'-deoxyribonucleosides: absolute configuration and conformational features. Chem Res Toxicol 2007; 19:1357-65. [PMID: 17040105 DOI: 10.1021/tx060088f] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present study was aimed at gaining further insights into stereochemical and conformational features of the 4R and 4S diastereomers of spiroiminodihydantoin 2'-deoxyribonucleosides that have been shown to be the predominant singlet oxygen oxidation products of 2'-deoxyguanosine in aqueous solutions. It may be added that spiroiminodihydantoin derivatives are efficiently generated by one-electron and singlet oxygen oxidation of the 8-oxo-7,8-dihydroguanine moiety of several nucleic acid components including nucleosides, nucleotides, and oligonucleotides. The reported structural data on the pair of diastereomeric spiroiminodihydantoin 2'-deoxyribonucleosides 1 and 2 are mostly inferred from extensive (1)H and (13)C NMR analyses including two-dimensional nuclear Overhauser effect measurements performed in both D(2)O and dimethyl sulfoxide. This approach that has been shown previously to be suitable to assign the stereochemistry of the base moiety of oxidized pyrimidine nucleosides was completed by molecular modeling and quantum mechanics studies. Thus, application of these two complementary approaches together with the consideration of the results of a recent relevant quantum mechanic study has allowed the assignment of the absolute stereoconfiguration of the C-4 carbon of diastereomers 1 and 2. In addition, information is provided on the conformational features of the 2-deoxyribose moiety and the orientation of the base around the N-glycosidic bond of both 2'-deoxyribonucleosides 1 and 2.
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Affiliation(s)
- Boleslaw Karwowski
- Laboratoire de Chimie Inorganique et Biologique, UMR-E No. 3 (CEA-UJF), Département de Recherche Fondamentale sur la Matière Condensée, CEA/Grenoble, F-38054 Grenoble Cedex 9, France
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Martinez GR, Garcia F, Catalani LH, Cadet J, Oliveira MC, Ronsein GE, Miyamoto S, Medeiros MH, Mascio PD. Synthesis of a hydrophilic and non-ionic anthracene derivative, the N,N′-di-(2,3-dihydroxypropyl)-9,10-anthracenedipropanamide as a chemical trap for singlet molecular oxygen detection in biological systems. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.08.094] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Neeley WL, Essigmann JM. Mechanisms of formation, genotoxicity, and mutation of guanine oxidation products. Chem Res Toxicol 2006; 19:491-505. [PMID: 16608160 DOI: 10.1021/tx0600043] [Citation(s) in RCA: 377] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- William L Neeley
- Department of Chemistry and Biological Engineering Division, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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Grey CE, Adlercreutz P. Evaluation of multiple oxidation products for monitoring effects of antioxidants in Fenton oxidation of 2'-deoxyguanosine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:2350-8. [PMID: 16536618 DOI: 10.1021/jf052202q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The objective of this study was to investigate the influence of the two antioxidants, ascorbic acid and (+)catechin, on the oxidation of 2'-deoxyguanosine (dG), using an iron-mediated Fenton reaction. The oxidation products 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) and 8,5'-cyclo-2'-deoxyguanosine, together with the secondary oxidation products guanidinohydantoin and dehydro-guanidinohydantoin, were identified and quantified through the use of an LC-MS/MS system. The results obtained showed that catechin inhibited the oxidation better than ascorbic acid did, indicating that the chelating ability of catechin rather than the radical scavenging mechanism alone is vital for the observed antioxidative efficiency. The correlation between the different oxidation products was found to be quite low, primarily because of the instability of 8-oxodG, making it prone to further oxidation. This led to apparent anti- and pro-oxidative results being obtained, emphasizing the potential problems in evaluating oxidative stress, by use of a single marker.
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Affiliation(s)
- Carl Elovson Grey
- Department of Biotechnology, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
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Gimisis T, Cismaş C. Isolation, Characterization, and Independent Synthesis of Guanine Oxidation Products. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500581] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thanasis Gimisis
- Department of Chemistry, University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Crina Cismaş
- Department of Chemistry, University of Athens, Panepistimiopolis, 15771 Athens, Greece
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Yamaguchi LF, Vassão DG, Kato MJ, Di Mascio P. Biflavonoids from Brazilian pine Araucaria angustifolia as potentials protective agents against DNA damage and lipoperoxidation. PHYTOCHEMISTRY 2005; 66:2238-47. [PMID: 16153416 DOI: 10.1016/j.phytochem.2004.11.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2004] [Revised: 05/20/2004] [Indexed: 05/04/2023]
Abstract
A biflavonoid fraction (BFF) obtained from Araucaria angustifolia needles was effective to quench singlet oxygen (1O2), to protect plasmid DNA against single strand break (ssb) caused by 1O2 or Fenton reaction and to inhibit Fenton or UV radiation-induced lipoperoxidation in phosphatidylcholine liposomes. The activity of the biflavonoid fraction (BFF) was compared with quercetin, rutin (flavonoids), ginkgetin, amentoflavone (biflavonoids), alpha-tocopherol and Trolox. The BFF displayed a higher quenching rate constant compared to flavonoids and biflavonoids and protected against ssb induced by 1O2. Although the BFF was not as efficient as either flavonoids, alpha-tocopherol or Trolox in protection against ssb induced by Fenton-reaction or lipoperoxidation, these scavenging properties suggest that BFF is still an excellent candidate for successful employment as an antioxidant and photoprotector.
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Affiliation(s)
- Lydia F Yamaguchi
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Cx Postal 26077, CEP 05599-970, São Paulo, SP, Brazil
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Banoub JH, Newton RP, Esmans E, Ewing DF, Mackenzie G. Recent developments in mass spectrometry for the characterization of nucleosides, nucleotides, oligonucleotides, and nucleic acids. Chem Rev 2005; 105:1869-915. [PMID: 15884792 DOI: 10.1021/cr030040w] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joseph H Banoub
- Fisheries and Oceans Canada, Science Branch, Special Projects, P.O. Box 5667, St. John's NL A1C 5X1, Canada.
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Misiaszek R, Crean C, Geacintov NE, Shafirovich V. Combination of nitrogen dioxide radicals with 8-oxo-7,8-dihydroguanine and guanine radicals in DNA: oxidation and nitration end-products. J Am Chem Soc 2005; 127:2191-200. [PMID: 15713097 DOI: 10.1021/ja044390r] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The oxidation and nitration reactions in DNA associated with the combination of nitrogen dioxide radicals with 8-oxo-7,8-dihydroguanine (8-oxoGua) and guanine radicals were explored by kinetic laser spectroscopy and mass spectrometry methods. The oxidation/nitration processes were triggered by photoexcitation of 2-aminopurine (2AP) residues site-specifically positioned in the 2'-deoxyribooligonucleotide 5'-d(CC[2AP]TC[X]CTACC) sequences (X = 8-oxoGua or G), by intense 308 nm excimer laser pulses. The photoionization products, 2AP radicals, rapidly oxidize either 8-oxoGua or G residues positioned within the same oligonucleotide but separated by a TC dinucleotide step on the 3'-side of 2AP. The two-photon ionization of the 2AP residue also generates hydrated electrons that are trapped by nitrate anions thus forming nitrogen dioxide radicals. The combination of nitrogen dioxide radicals with the 8-oxoGua and G radicals occurs with similar rate constants (approximately 4.3 x 10(8) M(-1) s(-1)) in both single- and double-stranded DNA. In the case of 8-oxoGua, the major end-products of this bimolecular radical-radical addition are spiroiminodihydantoin lesions, the products of 8-oxoGua oxidation. Oxygen-18 isotope labeling experiments reveal that the O-atom in the spiroiminodihydantoin lesion originates from water molecules, not from nitrogen dioxide radicals. In contrast, combination of nitrogen dioxide and guanine neutral radicals generated under the same conditions results in the formation of the nitro products, 5-guanidino-4-nitroimidazole and 8-nitroguanine adducts. The mechanistic aspects of the oxidation/nitration processes and their biological implications are discussed.
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Affiliation(s)
- Richard Misiaszek
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, USA
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42
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Ravanat JL, Sauvaigo S, Caillat S, Martinez GR, Medeiros MHG, Di Mascio P, Favier A, Cadet J. Singlet oxygen-mediated damage to cellular DNA determined by the comet assay associated with DNA repair enzymes. Biol Chem 2004; 385:17-20. [PMID: 14977042 DOI: 10.1515/bc.2004.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The damage profile produced by the reaction of singlet molecular oxygen with cellular DNA was determined using the comet assay associated with DNA repair enzymes. Singlet oxygen was produced intracellularly by thermal decomposition of a water-soluble endoperoxide of a naphthalene derivative which is able to penetrate through the membrane into mammalian cells. We found that the DNA modifications produced by singlet oxygen were almost exclusively oxidised purines recognised by the formamidopyrimidine DNA N-glycosylase. In contrast, significant amounts of direct strand breaks and alkali-labile sites or oxidised pyrimidines, detectable by the bacterial endonuclease III, were not produced.
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Affiliation(s)
- Jean-Luc Ravanat
- Laboratoire Lésions des Acides Nucléiques, FRE 2600, DRFMC/SCIB CEA Grenoble, 17 Avenue des Martyrs, F-38054 Grenoble Cedex 9, France
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Estevam ML, Nascimento OR, Baptista MS, Di Mascio P, Prado FM, Faljoni-Alario A, Zucchi MDR, Nantes IL. Changes in the spin state and reactivity of cytochrome C induced by photochemically generated singlet oxygen and free radicals. J Biol Chem 2004; 279:39214-22. [PMID: 15247265 DOI: 10.1074/jbc.m402093200] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
This work compares the effect of photogenerated singlet oxygen (O(2)((1)Delta(g))) (type II mechanism) and free radicals (type I mechanism) on cytochrome c structure and reactivity. Both reactive species were obtained by photoexcitation of methylene blue (MB(+)) in the monomer and dimer forms, respectively. The monomer form is predominant at low dye concentrations (up to 8 microm) or in the presence of an excess of SDS micelles, while dimers are predominant at 0.7 mm SDS. Over a pH range in which cytochrome c is in the native form, O(2) ((1)Delta(g)) and free radicals induced a Soret band blue shift (from 409 to 405 nm), predominantly. EPR measurements revealed that the blue shift of the Soret band was compatible with conversion of the heme iron from its native low spin state to a high spin state with axial symmetry (g approximately 6.0). Soret band bleaching, due to direct attack on the heme group, was only detected under conditions that favored free radical production (MB(+) dimer in SDS micelles) or in the presence of a less structured form of the protein (above pH 9.3). Matrix-assisted laser desorption ionization time-of-flight mass spectrometry of the heme group and the polypeptide chain of cytochrome c with Soret band at 405 nm (cytc405) revealed no alterations in the mass of the cytc405 heme group but oxidative modifications on methionine (Met(65) and Met(80)) and tyrosine (Tyr(74)) residues. Damage of cytc405 tyrosine residue impaired its reduction by diphenylacetaldehyde, but not by beta-mercaptoethanol, which was able to reduce cytc405, generating cytochrome c Fe(II) in the high spin state (spin 2).
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Affiliation(s)
- Mauren L Estevam
- Centro Interdisciplinar de Investigação Bioquímica CIIB Universidade de Mogi das Cruzes UMC, Mogi das Cruzes, SP, CEP 08780-911, Brazil
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Joffe A, Geacintov NE, Shafirovich V. DNA lesions derived from the site selective oxidation of Guanine by carbonate radical anions. Chem Res Toxicol 2004; 16:1528-38. [PMID: 14680366 DOI: 10.1021/tx034142t] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Carbonate radical anions are potentially important oxidants of nucleic acids in physiological environments. However, the mechanisms of action are poorly understood, and the end products of oxidation of DNA by carbonate radicals have not been characterized. These oxidation pathways were explored in this work, starting from the laser pulse-induced generation of the primary radical species to the identification of the stable oxidative modifications (lesions). The cascade of events was initiated by utilizing 308 nm XeCl excimer laser pulses to generate carbonate radical anions on submicrosecond time scales. This laser flash photolysis method involved the photodissociation of persulfate to sulfate radical anions and the one electron oxidation of bicarbonate anions by the sulfate radicals to yield the carbonate radical anions. The latter were monitored by their characteristic transient absorption band at 600 nm. The rate constants of reactions of carbonate radicals with oligonucleotides increase in the ascending order: 5'-d(CCATCCTACC) [(5.7 +/- 0.6) x 10(6) M(-)(1) s(-)(1)] < 5'-d(TATAACGTTATA), self-complementary duplex [(1.4 +/- 0.2) x 10(7) M(-)(1) s(-)(1)] < 5'-d(CCATCGCTACC [(2.4 +/- 0.3) x 10(7) M(-)(1) s(-)(1)] < 5'-d(CCATC[8-oxo-G]CTACC) [(3.2 +/- 0.4) x 10(8) M(-)(1) s(-)(1)], where 8-oxo-G is 8-oxo-7,8-dihydroguanine, the product of a two electron oxidation of guanine. This remarkable enhancement of the rate constants is correlated with the presence of either G or 8-oxo-G bases in the oligonucleotides. The rate constant for the oxidation of G in a single-stranded oligonuclotide is faster by a factor of approximately 2 than in the double-stranded form. The site selective oxidation of G and 8-oxo-G residues by carbonate radicals results in the formation of unique end products, the diastereomeric spiroiminodihydantoin (Sp) lesions, the products of a four electron oxidation of guanine. These lesions, formed in high yields (40-60%), were isolated by reversed phase HPLC and identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. These assignments were supported by the characteristic circular dichroism spectra of opposite signs of the two lesions. The oxidation of guanine to Sp diastereomers occurs, at least in part, via the formation of 8-oxo-G lesions as intermediates. The Sp lesions can be considered as the terminal products of the oxidation of G and 8-oxo-G in DNA by carbonate radical anions. The mechanistic aspects and biological implications of these site selective reactions in DNA initiated by carbonate radicals are discussed.
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Affiliation(s)
- Avrum Joffe
- Chemistry Department and Radiation and Solid State Laboratory, 31 Washington Place, New York University, New York, New York 10003-5180, USA
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Ravanat JL, Martinez GR, Medeiros MHG, Di Mascio P, Cadet J. Mechanistic aspects of the oxidation of DNA constituents mediated by singlet molecular oxygen. Arch Biochem Biophys 2004; 423:23-30. [PMID: 14989260 DOI: 10.1016/j.abb.2003.10.018] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The present paper focussed on the mechanistic aspect of the reaction of singlet oxygen (1O2), in its lowest excited state (1 Delta g), toward DNA constituents. It is well known that 1O2 is able to react with the guanine moiety of DNA to produce almost specifically 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo). However, when 2'-deoxyguanosine (dGuo), free in solution, is the substrate, additional modified nucleosides are detected upon 1O2-mediated oxidation. The combined use of the thermolysis of a water-soluble naphthalene endoperoxide as a generator of 18O-singlet oxygen and the sensitivity of electrospray ionization-tandem mass spectrometry has allowed us to better understand the reactivity of 1O2 toward dGuo and 8-oxodGuo. As a striking observation, the secondary oxidation reaction of 8-oxodGuo, a main 1O2 oxidation product of dGuo, may explain, at least partly, the observed mutagenicity of 1O2.
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Affiliation(s)
- Jean-Luc Ravanat
- Laboratoire Lésions des Adides Nucléiques Service de Chimie Inorganique et Biologique, FRE 2600, Départemnt de Recherche Fondmentale sur la Matière Condensée, CEA Grenoble, France
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Martinez GR, Ravanat JL, Cadet J, Miyamoto S, Medeiros MHG, Di Mascio P. Energy Transfer between Singlet (1Δg) and Triplet (3Σg-) Molecular Oxygen in Aqueous Solution. J Am Chem Soc 2004; 126:3056-7. [PMID: 15012128 DOI: 10.1021/ja039111z] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We clearly demonstrate the occurrence of energy transfer between 18O2 (1Deltag) and 16O2 in the ground state (3Sigmag-) with subsequent conversion of the latter species into its singlet excited state (1Deltag) in aqueous solution. This was inferred from the results of incubation experiments involving DHPN18O2 as a chemical generator of 18O2 (1Deltag) and the water-soluble disodium salt of anthracene (EAS) used as a chemical trap of singlet oxygen. The products of the reaction were accurately analyzed by HPLC-ESI-MS.
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Affiliation(s)
- Glaucia R Martinez
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970, Bloco 12 sala 1223, São Paulo, Brazil
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Sako M, Inagaki S, Esaka Y, Deyashiki Y. Oxidative hydrolysis of a cyclic 1,N2-propano-2′-deoxyguanosine, an adduct of 2′-deoxyguanosine with acetaldehyde or crotonaldehyde. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01864-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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48
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Aubry JM, Pierlot C, Rigaudy J, Schmidt R. Reversible binding of oxygen to aromatic compounds. Acc Chem Res 2003; 36:668-75. [PMID: 12974650 DOI: 10.1021/ar010086g] [Citation(s) in RCA: 281] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Many polycyclic aromatic hydrocarbons are able to trap singlet oxygen (1)O(2). Some of the endoperoxides, thus obtained, exhibit the exceptional feature of releasing oxygen, frequently in the excited singlet state, under heating or UV irradiation. In this Account, we provide a short summary of the present knowledge on these endoperoxides: preparation and thermal and photolytic decomposition, with a special emphasis on the structural requirements to favor cycloreversion. The profitable use of this property in the development of highly reversible photochromic systems and of specific sources or traps of (1)O(2) in aqueous media is also described.
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Affiliation(s)
- Jean-Marie Aubry
- Laboratoire d'Oxydation et de Formulation, LCOM, UMR CNRS 8009, ENSCL, BP 108, F-59652 Villeneuve d'Ascq Cedex, France
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Suzuki T, Friesen MD, Ohshima H. Formation of a diimino-imidazole nucleoside from 2'-deoxyguanosine by singlet oxygen generated by methylene blue photooxidation. Bioorg Med Chem 2003; 11:2157-62. [PMID: 12713825 DOI: 10.1016/s0968-0896(03)00124-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Singlet oxygen ((1)O(2)) is capable of inducing genotoxic, carcinogenic and mutagenic effects. It has previously been reported that the reaction of (1)O(2) with 2'-deoxyguanosine, which is a major target of (1)O(2) among the DNA constituents, leads to formation of various oxidized products including 8-oxo-7,8-dihydro-2'-deoxyguanosine and spiroiminodihydantoin, amino-imidazolone and diamino-oxazolone nucleosides. In addition to these products, we report that a novel diimino-imidazole nucleoside, 2,5-diimino-4-[(2-deoxy-beta-D-erythro-pentofuranosyl)amino]-2H,5H-imidazole (dD), is formed by reaction of 2'-deoxyguanosine with (1)O(2) generated by irradiation with visible light in the presence of methylene blue under aerobic conditions. Its identification is based on identical chromatographic and spectroscopic data with an authentic compound, which we recently isolated and characterised from the reaction mixture of 2'-deoxyguanosine with reagent HOCl and a myeloperoxidase-H(2)O(2)-Cl(-) system. The yield of dD was increased by D(2)O and decreased by azide. dD was not generated from 8-oxo-7,8-dihydro-2'-deoxyguanosine. These results indicate that dD is generated by (1)O(2) directly from 2'-deoxyguanosine, but not via 8-oxo-7,8-dihydro-2'-deoxyguanosine. dD may play a role in the genotoxicity of singlet oxygen in cells.
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Affiliation(s)
- Toshinori Suzuki
- International Agency for Research on Cancer, 150 Cours Albert Thomas, F 69372 Cedex 08, Lyon, France
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Torun L, Morrison H. Photooxidation of 2′-Deoxyguanosine 5′-monophosphate in Aqueous Solution¶. Photochem Photobiol 2003. [DOI: 10.1562/0031-8655(2003)077<0370:podmia>2.0.co;2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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