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Boutchouang RP, Fliniaux O, Eyamo JVE, Djabou ASM, Fontaine JX, Molinié R, Mesnard F, Niemenak N. Metabolome profiling of cacao (Theobroma cacao L.) callus under drought stress conditions induced by polyethylene glycol (PEG) as osmoticant. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:708-722. [PMID: 38246169 DOI: 10.1002/pca.3323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/21/2023] [Accepted: 12/16/2023] [Indexed: 01/23/2024]
Abstract
INTRODUCTION The cacao tree (Theobroma cacao), a perennial crop that serves as a source of cacao beans, can suffer from drastic climate changes such as irregular rainfall and shorter rainy seasons. The search for hybrids which are capable of producing specific metabolites favoring adaptation in new climatic conditions is a challenge in cacao farming. OBJECTIVES We aimed to (1) analyze the metabolic changes in calli of three cacao genotypes during water deficit induced by incubation with polyethylene glycol and (2) assess their response to water deficit stress with regard to somatic embryo differentiation. METHODS Metabolic profiling was carried out using 1H-NMR spectroscopy and multivariate data analysis was applied to crude extracts of calli grown in non-stress or water deficit stress conditions. RESULTS Water deficit stress influences the capacity of calli to produce embryos. The SCA12 genotype exhibited the best conversion capacity under severe conditions and was considered as tolerant to drought, followed by the SCA6 genotype (mid-tolerant) and the MA12 genotype (sensitive). Fifty-four metabolites were identified in the three cacao genotypes and discriminant metabolites were identified. Metabolites involved in water stress tolerance such as fructose, trans-aconitic acid, leucine, and hydroxybenzene derivatives were observed in SCA12, the tolerant genotype. CONCLUSION These results demonstrate the utility of 1H-NMR metabolomics as an essential tool for the analysis of the drought tolerance characteristics of T. cacao.
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Affiliation(s)
- Rodrigue Pouengue Boutchouang
- Department of Biochemistry, Faculty of Sciences, University of Yaoundé I, Yaoundé, Cameroon
- Laboratory of Biochemistry and Plant Physiology, Department of Biological Science, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Ophélie Fliniaux
- BIOPI-BioEcoAgro UMRT 1158 INRAE Université de Picardie Jules Verne, Amiens, France
| | - Jos Victor Evina Eyamo
- Laboratory of Biochemistry and Plant Physiology, Department of Biological Science, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
- Department of Agriculture and Agropastoral, Higher Technical Teacher Training College, University of Ebolowa, Ebolowa, Cameroon
| | - Astride Stephanie Mouafi Djabou
- Laboratory of Biochemistry and Plant Physiology, Department of Biological Science, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
- Faculty of Agronomy and Agricultural Science, University of Dschang, Dschang, Cameroon
| | - Jean-Xavier Fontaine
- BIOPI-BioEcoAgro UMRT 1158 INRAE Université de Picardie Jules Verne, Amiens, France
| | - Roland Molinié
- BIOPI-BioEcoAgro UMRT 1158 INRAE Université de Picardie Jules Verne, Amiens, France
| | - François Mesnard
- BIOPI-BioEcoAgro UMRT 1158 INRAE Université de Picardie Jules Verne, Amiens, France
| | - Nicolas Niemenak
- Laboratory of Biochemistry and Plant Physiology, Department of Biological Science, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
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Ye J, Bazzi S, Fritz T, Tittmann K, Mata RA, Uranga J. Mechanisms of Cysteine-Lysine Covalent Linkage-The Role of Reactive Oxygen Species and Competition with Disulfide Bonds. Angew Chem Int Ed Engl 2023; 62:e202304163. [PMID: 37294559 DOI: 10.1002/anie.202304163] [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: 03/22/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 06/10/2023]
Abstract
Recently, a new naturally occurring covalent linkage was characterised, involving a cysteine and a lysine, bridged through an oxygen atom. The latter was dubbed as the NOS bond, reflecting the individual atoms involved in this uncommon bond which finds little parallel in lab chemistry. It is found to form under oxidising conditions and is reversible upon addition of reducing agents. Further studies have identified the bond in crystal structures across a variety of systems and organisms, potentially playing an important role in regulation, cellular defense and replication. Not only that, double NOS bonds have been identified and even found to be competitive in relation to the formation of disulfide bonds. This raises several questions about how this exotic bond comes to be, what are the intermediates involved in its formation and how it competes with other pathways of sulfide oxidation. With this objective in mind, we revisited our first proposed mechanism for the reaction with model electronic structure calculations, adding information about the reactivity with alternative reactive oxygen species and other potential competing products of oxidation. We present a network with more than 30 reactions which provides one of the most encompassing pictures for cysteine oxidation pathways to date.
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Affiliation(s)
- Jin Ye
- Institute for Physical Chemistry, Georg-August Universität Göttingen, Tammannstraße 6, D-37077, Göttingen, Germany
| | - Sophia Bazzi
- Institute for Physical Chemistry, Georg-August Universität Göttingen, Tammannstraße 6, D-37077, Göttingen, Germany
| | - Tobias Fritz
- Institute for Physical Chemistry, Georg-August Universität Göttingen, Tammannstraße 6, D-37077, Göttingen, Germany
| | - Kai Tittmann
- Department of Molecular Enzymology, Göttingen Center of Molecular Biosciences, Georg-August University Göttingen, Göttingen, Germany
- Department of Structural Dynamics, Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Ricardo A Mata
- Institute for Physical Chemistry, Georg-August Universität Göttingen, Tammannstraße 6, D-37077, Göttingen, Germany
| | - Jon Uranga
- Institute for Physical Chemistry, Georg-August Universität Göttingen, Tammannstraße 6, D-37077, Göttingen, Germany
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Guzman-Lopez EG, Reina M, Perez-Gonzalez A, Francisco-Marquez M, Hernandez-Ayala LF, Castañeda-Arriaga R, Galano A. CADMA-Chem: A Computational Protocol Based on Chemical Properties Aimed to Design Multifunctional Antioxidants. Int J Mol Sci 2022; 23:13246. [PMID: 36362034 PMCID: PMC9658414 DOI: 10.3390/ijms232113246] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/17/2022] [Accepted: 10/22/2022] [Indexed: 10/12/2023] Open
Abstract
A computational protocol aimed to design new antioxidants with versatile behavior is presented. It is called Computer-Assisted Design of Multifunctional Antioxidants and is based on chemical properties (CADMA-Chem). The desired multi-functionality consists of in different methods of antioxidant protection combined with neuroprotection, although the protocol can also be used to pursue other health benefits. The dM38 melatonin derivative is used as a study case to illustrate the protocol in detail. This was found to be a highly promising candidate for the treatment of neurodegeneration, in particular Parkinson's and Alzheimer's diseases. This also has the desired properties of an oral-drug, which is significantly better than Trolox for scavenging free radicals, and has chelates redox metals, prevents the ●OH production, via Fenton-like reactions, repairs oxidative damage in biomolecules (lipids, proteins, and DNA), and acts as a polygenic neuroprotector by inhibiting catechol-O-methyl transferase (COMT), acetylcholinesterase (AChE) and monoamine oxidase B (MAOB). To the best of our best knowledge, CADMA-Chem is currently the only protocol that simultaneously involves the analyses of drug-like behavior, toxicity, manufacturability, versatile antioxidant protection, and receptor-ligand binding affinities. It is expected to provide a starting point that helps to accelerate the discovery of oral drugs with the potential to prevent, or slow down, multifactorial human health disorders.
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Affiliation(s)
- Eduardo Gabriel Guzman-Lopez
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección, Mexico City 09310, Mexico
| | - Miguel Reina
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Adriana Perez-Gonzalez
- CONACYT-Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección, Mexico City 09310, Mexico
| | | | - Luis Felipe Hernandez-Ayala
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección, Mexico City 09310, Mexico
| | - Romina Castañeda-Arriaga
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección, Mexico City 09310, Mexico
| | - Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección, Mexico City 09310, Mexico
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Kang X, Li Y, Yin S, Li W, Qi J. Reactive Species-Activatable AIEgens for Biomedical Applications. BIOSENSORS 2022; 12:646. [PMID: 36005044 PMCID: PMC9406055 DOI: 10.3390/bios12080646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 05/27/2023]
Abstract
Precision medicine requires highly sensitive and specific diagnostic strategies with high spatiotemporal resolution. Accurate detection and monitoring of endogenously generated biomarkers at the very early disease stage is of extensive importance for precise diagnosis and treatment. Aggregation-induced emission luminogens (AIEgens) have emerged as a new type of excellent optical agents, which show great promise for numerous biomedical applications. In this review, we highlight the recent advances of AIE-based probes for detecting reactive species (including reactive oxygen species (ROS), reactive nitrogen species (RNS), reactive sulfur species (RSS), and reactive carbonyl species (RCS)) and related biomedical applications. The molecular design strategies for increasing the sensitivity, tuning the response wavelength, and realizing afterglow imaging are summarized, and theranostic applications in reactive species-related major diseases such as cancer, inflammation, and vascular diseases are reviewed. The challenges and outlooks for the reactive species-activatable AIE systems for disease diagnostics and therapeutics are also discussed. This review aims to offer guidance for designing AIE-based specifically activatable optical agents for biomedical applications, as well as providing a comprehensive understanding about the structure-property application relationships. We hope it will inspire more interesting researches about reactive species-activatable probes and advance clinical translations.
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Affiliation(s)
- Xiaoying Kang
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yue Li
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Shuai Yin
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Wen Li
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Ji Qi
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
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Dwinandha D, Zhang B, Fujii M. Prediction of reaction mechanism for OH radical-mediated phenol oxidation using quantum chemical calculation. CHEMOSPHERE 2022; 291:132763. [PMID: 34740699 DOI: 10.1016/j.chemosphere.2021.132763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 06/13/2023]
Abstract
Understanding the reaction mechanism of OH•-mediated oxidation of organic micropollutants (OMPs) contributes to the assessment and development of advanced oxidation processes (AOPs) for removal of OMPs in water environment. In this study, a theoretical approach using quantum chemical calculation (QCC) was employed to investigate the prediction accuracy of the reaction mechanism (i.e., reaction site and rate) for OH•-mediated oxidation of phenol, where the hydroquinone and catechol are generated as transformation products (TPs) via radical and electrophilic reactions. We compared three different levels of theory (Hartree-Fock, B3LYP, and M06-2X) with 6-311 + G (2d,2p)/SMD, and the reaction site and rate constants were predicted by the Fukui function and transition state theory, respectively. Overall, the prediction accuracy of the TPs formation mechanism was the highest in the calculations using M06-2X. For example, the initial OH• addition to phenol was predicted to occur with a probability of 77% for the ortho position and 23% for the para position, which was consistent with the experimental observation. By applying the transition state theory, the rate constants toward TPs formation pathway can be reasonably reproduced, suggesting that M06-2X has an effective function for polycyclic reactions. However, the observed discrepancies in rate constants are inferred from dispersion effects and the multi-reference property in the computational system or derived from mismatch of target reactions between theoretical calculations and experiments. Overall, this study provides an insight into QCC application for investigating the formation mechanism of TPs in AOPs for removal of OMPs in water environment.
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Affiliation(s)
- Dhimas Dwinandha
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Bei Zhang
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan
| | - Manabu Fujii
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
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Hipper E, Blech M, Hinderberger D, Garidel P, Kaiser W. Photo-Oxidation of Therapeutic Protein Formulations: From Radical Formation to Analytical Techniques. Pharmaceutics 2021; 14:72. [PMID: 35056968 PMCID: PMC8779573 DOI: 10.3390/pharmaceutics14010072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 12/25/2022] Open
Abstract
UV and ambient light-induced modifications and related degradation of therapeutic proteins are observed during manufacturing and storage. Therefore, to ensure product quality, protein formulations need to be analyzed with respect to photo-degradation processes and eventually protected from light exposure. This task usually demands the application and combination of various analytical methods. This review addresses analytical aspects of investigating photo-oxidation products and related mediators such as reactive oxygen species generated via UV and ambient light with well-established and novel techniques.
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Affiliation(s)
- Elena Hipper
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (E.H.); (D.H.)
| | - Michaela Blech
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
| | - Dariush Hinderberger
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (E.H.); (D.H.)
| | - Patrick Garidel
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
| | - Wolfgang Kaiser
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
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Poojary MM, Lund MN. Chemical Stability of Proteins in Foods: Oxidation and the Maillard Reaction. Annu Rev Food Sci Technol 2021; 13:35-58. [PMID: 34941384 DOI: 10.1146/annurev-food-052720-104513] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Protein is a major nutrient present in foods along with carbohydrates and lipids. Food proteins undergo a wide range of modifications during food production, processing, and storage. In this review, we discuss two major reactions, oxidation and the Maillard reaction, involved in chemical modifications of food proteins. Protein oxidation in foods is initiated by metal-, enzyme-, or light-induced processes. Food protein oxidation results in the loss of thiol groups and the formation of protein carbonyls and specific oxidation products of cysteine, tyrosine, tryptophan, phenylalanine, and methionine residues, such as disulfides, dityrosine, kynurenine, m-tyrosine, and methionine sulfoxide. The Maillard reaction involves the reaction of nucleophilic amino acid residues with reducing sugars, which yields numerous heterogeneous compounds such as α-dicarbonyls, furans, Strecker aldehydes, advanced glycation end-products, and melanoidins. Both protein oxidation and the Maillard reaction result in the loss of essential amino acids but may positively or negatively impact food structure and flavor. Expected final online publication date for the Annual Review of Food Science and Technology, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark;
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; .,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark;
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Gold-Protein Composite Nanoparticles for Enhanced X-ray Interactions: A Potential Formulation for Triggered Release. Pharmaceutics 2021; 13:pharmaceutics13091407. [PMID: 34575482 PMCID: PMC8471296 DOI: 10.3390/pharmaceutics13091407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/21/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022] Open
Abstract
Drug-delivery vehicles have been used extensively to modulate the biodistribution of drugs for the purpose of maximizing their therapeutic effects while minimizing systemic toxicity. The release characteristics of the vehicle must be balanced with its encapsulation properties to achieve optimal delivery of the drug. An alternative approach is to design a delivery vehicle that preferentially releases its contents under specific endogenous (e.g., tissue pH) or exogenous (e.g., applied temperature) stimuli. In the present manuscript, we report on a novel delivery system with potential for triggered release using external beam radiation. Our group evaluated Zein protein as the basis for the delivery vehicle and used radiation as the exogenous stimulus. Proteins are known to react with free radicals, produced during irradiation in aqueous suspensions, leading to aggregation, fragmentation, amino acid modification, and proteolytic susceptibility. Additionally, we incorporated gold particles into the Zein protein matrix to create hybrid Zein-gold nanoparticles (ZAuNPs). Zein-only nanoparticles (ZNPs) and ZAuNPs were subsequently exposed to kVp radiation (single dose ranging from 2 to 80 Gy; fractionated doses of 2 Gy delivered 10 times) and characterized before and after irradiation. Our data indicated that the presence of gold particles within Zein particles was correlated with significantly higher levels of alterations to the protein, and was associated with higher rates of release of the encapsulated drug compound, Irinotecan. The aggregate results demonstrated a proof-of-principle that radiation can be used with gold nanoparticles to modulate the release rates of protein-based drug-delivery vehicles, such as ZNPs.
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Kehm R, Baldensperger T, Raupbach J, Höhn A. Protein oxidation - Formation mechanisms, detection and relevance as biomarkers in human diseases. Redox Biol 2021; 42:101901. [PMID: 33744200 PMCID: PMC8113053 DOI: 10.1016/j.redox.2021.101901] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/06/2021] [Accepted: 02/12/2021] [Indexed: 12/16/2022] Open
Abstract
Generation of reactive oxygen species and related oxidants is an inevitable consequence of life. Proteins are major targets for oxidation reactions, because of their rapid reaction rates with oxidants and their high abundance in cells, extracellular tissues, and body fluids. Additionally, oxidative stress is able to degrade lipids and carbohydrates to highly reactive intermediates, which eventually attack proteins at various functional sites. Consequently, a wide variety of distinct posttranslational protein modifications is formed by protein oxidation, glycoxidation, and lipoxidation. Reversible modifications are relevant in physiological processes and constitute signaling mechanisms ("redox signaling"), while non-reversible modifications may contribute to pathological situations and several diseases. A rising number of publications provide evidence for their involvement in the onset and progression of diseases as well as aging processes. Certain protein oxidation products are chemically stable and formed in large quantity, which makes them promising candidates to become biomarkers of oxidative damage. Moreover, progress in the development of detection and quantification methods facilitates analysis time and effort and contributes to their future applicability in clinical routine. The present review outlines the most important classes and selected examples of oxidative protein modifications, elucidates the chemistry beyond their formation and discusses available methods for detection and analysis. Furthermore, the relevance and potential of protein modifications as biomarkers in the context of disease and aging is summarized.
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Affiliation(s)
- Richard Kehm
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany.
| | - Tim Baldensperger
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany.
| | - Jana Raupbach
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany.
| | - Annika Höhn
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany; German Center for Diabetes Research (DZD), 85764, Muenchen-Neuherberg, Germany.
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Andrade-Sampedro P, Matxain JM, Correa A. Pd-Catalyzed C(sp 2 )-H Alkoxycarbonylation of Phenethyl- and Benzylamines with Chloroformates as CO Surrogates. Chemistry 2021; 27:5782-5789. [PMID: 33433940 DOI: 10.1002/chem.202005338] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Indexed: 12/26/2022]
Abstract
The site-selective functionalization of C-H bonds within a complex molecule remains a challenging task of capital synthetic importance. Herein, an unprecedented Pd-catalyzed C(sp2 )-H alkoxycarbonylation of phenylalanine derivatives and other amines featuring picolinamide as the directing group (DG) is reported. This oxidative coupling is distinguished by its scalability, operational simplicity, and avoids the use of toxic carbon monoxide as the C1 source. Remarkably, the easy cleavage of the DG enables the efficient assembly of isoindolinone compounds. Density Functional Theory calculations support a PdII /PdIV catalytic cycle.
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Affiliation(s)
- Paula Andrade-Sampedro
- Department of Organic Chemistry I, Joxe Mari Korta R&D Center, University of the Basque Country (UPV/EHU), Avda. Tolosa 72, 20018, Donostia-San Sebastián, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018, Donostia-San Sebastián, Spain
| | - Jon M Matxain
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia Saila, Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018, Donostia-San Sebastián, Spain
| | - Arkaitz Correa
- Department of Organic Chemistry I, Joxe Mari Korta R&D Center, University of the Basque Country (UPV/EHU), Avda. Tolosa 72, 20018, Donostia-San Sebastián, Spain
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The Impact of Mitochondrial Fission-Stimulated ROS Production on Pro-Apoptotic Chemotherapy. BIOLOGY 2021; 10:biology10010033. [PMID: 33418995 PMCID: PMC7825353 DOI: 10.3390/biology10010033] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/29/2020] [Accepted: 01/01/2021] [Indexed: 02/06/2023]
Abstract
Cancer is one of the world's deadliest afflictions. Despite recent advances in diagnostic and surgical technologies, as well as improved treatments of some individual tumor types, there is currently no universal cure to prevent or impede the uncontrolled proliferation of malignant cells. Targeting tumors by inducing apoptosis is one of the pillars of cancer treatment. Changes in mitochondrial morphology precede intrinsic apoptosis, but mitochondrial dynamics has only recently been recognized as a viable pharmacological target. In many cancers, oncogenic transformation is accompanied by accumulation of elevated cellular levels of ROS leading to redox imbalance. Hence, a common chemotherapeutic strategy against such tumor types involves deploying pro-oxidant agents to increase ROS levels above an apoptotic death-inducing threshold. The aim of this chapter is to investigate the benefit of stimulating mitochondrial fission-dependent production of ROS for enhanced killing of solid tumors. The main question to be addressed is whether a sudden and abrupt change in mitochondrial shape toward the fragmented phenotype can be pharmacologically harnessed to trigger a burst of mitochondrial ROS sufficient to initiate apoptosis specifically in cancer cells but not in non-transformed healthy tissues.
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Andrade-Sampedro P, Correa A, Matxain JM. On the Mechanism of Cross-Dehydrogenative Couplings between N-aryl Glycinates and Indoles: A Computational Study. J Org Chem 2020; 85:13133-13140. [PMID: 32940464 DOI: 10.1021/acs.joc.0c01816] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Despite the widespread use of cross-dehydrogenative couplings in modern organic synthesis, mechanistic studies are still rare in the literature and those applied to α-amino carbonyl compounds remain virtually unexplored. Herein, the mechanism of Co-catalyzed cross-dehydrogenative couplings of N-aryl glycinates with indoles is described. Density functional theory studies supported the formation of an imine-type intermediate as the more plausible transient electrophilic species. Likewise, key information regarding the role of the N-aryl group and free NH motif within the reaction outcome has been gained, which may set the stage for further developments in this field of expertise.
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Affiliation(s)
- Paula Andrade-Sampedro
- Department of Organic Chemistry I, Joxe Mari Korta R&D Center, University of the Basque Country (UPV/EHU), Avda. Tolosa 72, 20018 Donostia-San Sebastián, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
| | - Arkaitz Correa
- Department of Organic Chemistry I, Joxe Mari Korta R&D Center, University of the Basque Country (UPV/EHU), Avda. Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Jon M Matxain
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia Saila, Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
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13
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Castañeda-Arriaga R, Pérez-González A, Reina M, Galano A. Computer-designed melatonin derivatives: potent peroxyl radical scavengers with no pro-oxidant behavior. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02641-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Guidea A, Zăgrean-Tuza C, Moț AC, Sârbu C. Comprehensive evaluation of radical scavenging, reducing power and chelating capacity of free proteinogenic amino acids using spectroscopic assays and multivariate exploratory techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118158. [PMID: 32143172 DOI: 10.1016/j.saa.2020.118158] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 02/10/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
Among others, amino acids can inhibit oxidative processes through multiple pathways including inactivation of reactive oxygen species, scavenging free radicals, chelation of pro-oxidative transition metals, as well as reduction of hydroperoxides. Moreover, they can be a major target for oxidants as a result of their abundance in biological systems. The purpose of the present study is to examine the radical scavenging, reducing power and chelating capacity of the free proteinogenic amino acids, using several analytical assays based on different mechanisms and monitored via molecular UV-vis absorption spectrophotometry. In most of the assays, the highest antioxidant activity is rendered by Cys and Trp, known for their involvement in physiological radical reactions, followed by Tyr, Asn and Arg. The least reactive amino acids with respect to both radical scavenging and reducing power principle were Ala, Met, Thr and Val. The hierarchy of the amino acids based on their antioxidant activity is shifting, depending on the analytical assay employed. Results from the multivariate exploratory techniques-hierarchical cluster analysis and principal component analysis-could point out the methods that are most similar and best connected to each other, thus classifying the investigated amino acids according to their activity. Considering the results of chemometric techniques, the antioxidant methods that best discriminate between amino acids are DPPH bleaching and SORS assays. Not only the comprehensive study of antioxidant activity of amino acids is novel in this study but also the application of the sum of ranking differences to compare and rank the various antioxidant capacity assays. The obtained results will support the development of amino acids based multifunctional formulations with important physiologically relevant implications for both humans and animals, with a possible future use in the food industry.
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Affiliation(s)
- Alexandrina Guidea
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babes-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Cezara Zăgrean-Tuza
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babes-Bolyai University, 400028 Cluj-Napoca, Romania
| | - Augustin Cătălin Moț
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babes-Bolyai University, 400028 Cluj-Napoca, Romania.
| | - Costel Sârbu
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babes-Bolyai University, 400028 Cluj-Napoca, Romania
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15
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Bhangu SK, Bocchinfuso G, Ashokkumar M, Cavalieri F. Sound-driven dissipative self-assembly of aromatic biomolecules into functional nanoparticles. NANOSCALE HORIZONS 2020; 5:553-563. [PMID: 32118232 DOI: 10.1039/c9nh00611g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Dissipative self-assembly processes were recently exploited to assemble synthetic materials into supramolecular structures. In most cases, chemical fuel or light driven self-assembly of synthetic molecules was reported. Herein, experimental and computational approaches were used to unveil the role of acoustic cavitation in the formation of supramolecular nanoaggregates by dissipative self-assembly. Acoustic cavitation bubbles were employed as an energy source and a transient interface to fuel and refuel the dissipative self-assembly of simple aromatic biomolecules into uniform nanoparticles. Molecular dynamics simulations were applied to predict the formation of metastable aggregates and the dynamic exchange of the interacting molecules in the nanoaggregates. The intracellular trafficking and dissipative dissolution of the nanoparticles were tracked by microscopy imaging.
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Affiliation(s)
| | - Gianfranco Bocchinfuso
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma "Tor Vergata", via della ricerca scientifica 1, 00133, Rome, Italy
| | | | - Francesca Cavalieri
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma "Tor Vergata", via della ricerca scientifica 1, 00133, Rome, Italy and Department of Chemical Engineering, University of Melbourne, VIC 3010, Australia.
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16
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Lee D, Kwon M, Ahn Y, Jung Y, Nam SN, Choi IH, Kang JW. Characteristics of intracellular algogenic organic matter and its reactivity with hydroxyl radicals. WATER RESEARCH 2018; 144:13-25. [PMID: 30005177 DOI: 10.1016/j.watres.2018.06.069] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/26/2018] [Accepted: 06/29/2018] [Indexed: 06/08/2023]
Abstract
The aim of this study was to investigate the reactivity of intracellular algogenic organic matter (IOM) with hydroxyl radicals (·OH), a key reaction species in advanced oxidation processes. IOM was extracted from two green algae, Chlamydomonas reinhardtii and Scenedesmus sp., and two blue-green algae, Anabaena sp. and Microcystis aeruginosa using a freeze-thaw method. The second-order rate constants of the extracted IOM with ·OH were determined as 7.95 × 108 MC-1 s-1 (Chlamydomonas reinhardtii), 6.71 × 108 MC-1 s-1 (Scenedesmus sp.), 4.02 × 108 MC-1 s-1 (Anabaena sp.), and 4.45 × 108 MC-1 s-1 (Microcystis aeruginosa). These rate constants were significantly higher than values reported for dissolved organic matter in various water sources. This implies that IOM formation during algal bloom season could change the ·OH water matrix demand and adversely affect the performance of advanced oxidation processes. To investigate the physical and chemical composition characteristics of IOM and their relationship to the rate constants determined for the reaction between IOM and ·OH, liquid chromatography-organic carbon detection (LC-OCD) and fluorescence excitation-emission matrix & parallel factor analysis (FEEM-PARAFAC) were used. The IOM mainly consisted of low molecular weight (LMW) matter and protein-related compounds, as evidenced LMW neutrals (38-65%), biopolymers (7-19%), and tryptophan-like compounds (74-94%). Based on the composition characteristics of IOM, it was concluded that the molecular weight and the presence of nitrogen-containing compounds are influential parameters for determining the reactivity of IOM with ·OH.
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Affiliation(s)
- Doorae Lee
- Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju 220-710, Republic of Korea
| | - Minhwan Kwon
- Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju 220-710, Republic of Korea
| | - Yongtae Ahn
- Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju 220-710, Republic of Korea
| | - Youmi Jung
- Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju 220-710, Republic of Korea
| | - Seong-Nam Nam
- Department of Civil and Environmental Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Il-Hwan Choi
- Water Analysis and Research Center, Korea Water Resources Corporation, 200 Sintanjin-ro, Daedeok-gu, Daejeon, 34350, Republic of Korea
| | - Joon-Wun Kang
- Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju 220-710, Republic of Korea.
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17
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Schulze M, Rogge M, Stark RW. Atomic force microscopy measurements probing the mechanical properties of single collagen fibrils under the influence of UV light in situ. J Mech Behav Biomed Mater 2018; 88:415-421. [PMID: 30216931 DOI: 10.1016/j.jmbbm.2018.08.039] [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: 10/05/2017] [Revised: 06/06/2018] [Accepted: 08/27/2018] [Indexed: 11/27/2022]
Abstract
Collagen plays a decisive role as a functional substrate in tissue engineering. In particular, the rigidity of the collagen influences the behaviour of the attached cells. Thus, modification and controlled adjustment of collagen's characteristics are essential. To this end, controlled exposure to ultraviolet (UV) light is a promising process because it can be temporally and spatially well defined. In this study, we investigated the effect of UV exposure on surface supported single collagen fibrils in situ. This procedure allowed for a direct comparison between the untreated and modified states of type I collagen. Atomic force microscopy was used to map the mechanical properties. Exposure to UV light was used to influence the mechanical properties of the fibrils in varied liquid environments (deionized water and phosphate-buffered saline (PBS)). The results led to the assumption that combined UV/thermal treatment in deionized water continuously lowers the elastic modulus. In contrast, experiments performed in PBS-based solutions in combination with UV-B and UV-C light or thermal treatment up to 45 °C suggested an increase in the modulus within the first 30-40 min that subsequently decreased again. Thus, the wavelength, exposure, temperature, and chemical environment are relevant parameters that need to be controlled when modifying collagen using UV light.
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Affiliation(s)
- Marcus Schulze
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany; Center of Smart Interfaces, Technische Universität Darmstadt, Alarich-Weiss-Str. 10, 64287 Darmstadt, Germany
| | - Melanie Rogge
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany; Center of Smart Interfaces, Technische Universität Darmstadt, Alarich-Weiss-Str. 10, 64287 Darmstadt, Germany
| | - Robert W Stark
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany; Center of Smart Interfaces, Technische Universität Darmstadt, Alarich-Weiss-Str. 10, 64287 Darmstadt, Germany.
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18
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Castañeda-Arriaga R, Pérez-González A, Reina M, Alvarez-Idaboy JR, Galano A. Comprehensive Investigation of the Antioxidant and Pro-oxidant Effects of Phenolic Compounds: A Double-Edged Sword in the Context of Oxidative Stress? J Phys Chem B 2018; 122:6198-6214. [PMID: 29771524 DOI: 10.1021/acs.jpcb.8b03500] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Oxidative stress (OS) is a health-threatening process that is involved, at least partially, in the development of several diseases. Although antioxidants can be used as a chemical defense against OS, they might also exhibit pro-oxidant effects, depending on environmental conditions. In this work, such a dual behavior was investigated for phenolic compounds (PhCs) within the framework of the density functional theory and based on kinetic data. Multiple reaction mechanisms were considered in both cases. The presence of redox metals, the pH, and the possibility that PhCs might be transformed into benzoquinones were identified as key aspects in the antioxidant versus pro-oxidant effects of these compounds. The main virtues of PhCs as antioxidants are their radical trapping activity, their regeneration under physiological conditions, and their behavior as OH-inactivating ligands. The main risks of PhCs as pro-oxidants are predicted to be the role of phenolate ions in the reduction of metal ions, which can promote Fenton-like reactions, and the formation of benzoquinones that might cause protein arylation at cysteine sites. Although the benefits seem to overcome the hazards, to properly design chemical strategies against OS using PhCs, it is highly recommended to carefully explore their duality in this context.
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Affiliation(s)
- Romina Castañeda-Arriaga
- Departamento de Química , Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186 , Col. Vicentina, Iztapalapa , C.P. 09340 México City , México
| | - Adriana Pérez-González
- CONACYT-Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186, Col. Vicentina, Iztapalapa , C.P. 09340 México City , México
| | - Miguel Reina
- Departamento de Química , Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186 , Col. Vicentina, Iztapalapa , C.P. 09340 México City , México
| | - J Raúl Alvarez-Idaboy
- Facultad de Química, Departamento de Física y Química Teórica , Universidad Nacional Autónoma de México , C.P. 04510 México City , México
| | - Annia Galano
- Departamento de Química , Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186 , Col. Vicentina, Iztapalapa , C.P. 09340 México City , México
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19
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Uranga J, Mujika JI, Grande-Aztatzi R, Matxain JM. Oxidation of Acid, Base, and Amide Side-Chain Amino Acid Derivatives via Hydroxyl Radical. J Phys Chem B 2018; 122:4956-4971. [PMID: 29676577 DOI: 10.1021/acs.jpcb.7b12450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hydroxyl radical (•OH) is known to be highly reactive. Herein, we analyze the oxidation of acid (Asp and Glu), base (Arg and Lys), and amide (Asn and Gln) containing amino acid derivatives by the consecutive attack of two •OH. In this work, we study the reaction pathway by means of density functional theory. The oxidation mechanism is divided into two steps: (1) the first •OH can abstract a H atom or an electron, leading to a radical amino acid derivative, which is the intermediate of the reaction and (2) the second •OH can abstract another H atom or add itself to the formed radical, rendering the final oxidized products. The studied second attack of •OH is applicable to situations where high concentration of •OH is found, e.g., in vitro. Carbonyls are the best known oxidation products for these reactions. This work includes solvent dielectric and confirmation's effects of the reaction, showing that both are negligible. Overall, the most favored intermediates of the oxidation process at the side chain correspond to the secondary radicals stabilized by hyperconjugation. Intermediates show to be more stable in those cases where the spin density of the unpaired electron is lowered. Alcohols formed at the side chains are the most favored products, followed by the double-bond-containing ones. Interestingly, Arg and Lys side-chain scission leads to the most favored carbonyl-containing oxidation products, in line with experimental results.
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Affiliation(s)
- Jon Uranga
- Kimika Fakultatea-Chemistry Department , Euskal Herriko Unibertsitatea (UPV/EHU) , P.K. 1072 , 20080 Donostia , Euskadi , Spain.,Donostia International Physics Center (DIPC) , Manuel Lardizabal 4 , 20018 Donostia , Euskadi , Spain
| | - Jon I Mujika
- Donostia International Physics Center (DIPC) , Manuel Lardizabal 4 , 20018 Donostia , Euskadi , Spain
| | - Rafael Grande-Aztatzi
- Donostia International Physics Center (DIPC) , Manuel Lardizabal 4 , 20018 Donostia , Euskadi , Spain
| | - Jon M Matxain
- Kimika Fakultatea-Chemistry Department , Euskal Herriko Unibertsitatea (UPV/EHU) , P.K. 1072 , 20080 Donostia , Euskadi , Spain.,Donostia International Physics Center (DIPC) , Manuel Lardizabal 4 , 20018 Donostia , Euskadi , Spain
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20
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Karmakar S, Datta A. Understanding the Reactivity of CO3·– and NO2· Radicals toward S-Containing and Aromatic Amino Acids. J Phys Chem B 2017; 121:7621-7632. [DOI: 10.1021/acs.jpcb.7b05186] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sharmistha Karmakar
- Department of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road,
Jadavpur, 700032 Kolkata, West Bengal, India
| | - Ayan Datta
- Department of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road,
Jadavpur, 700032 Kolkata, West Bengal, India
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21
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Castañeda-Arriaga R, Galano A. Exploring Chemical Routes Relevant to the Toxicity of Paracetamol and Its meta-Analogue at a Molecular Level. Chem Res Toxicol 2017; 30:1286-1301. [DOI: 10.1021/acs.chemrestox.7b00024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Romina Castañeda-Arriaga
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina.
Iztapalapa, C. P. 09340, México D. F., México
| | - Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina.
Iztapalapa, C. P. 09340, México D. F., México
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22
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Castañeda-Arriaga R, Domínguez-Castro A, Lee J, Alvarez-Idaboy JR, Mora-Diez N. Chemical repair of protein carbon-centred radicals: long-distance dynamic factors. CAN J CHEM 2016. [DOI: 10.1139/cjc-2016-0230] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The thermodynamic and kinetic study of the repair reactions of three damaged aliphatic amino acids (alanine, valine, and leucine) with dihydrolipoic acid (DHLA) in a polar and a nonpolar solvent is presented in this work. Two simplified protein models were explored in the most common conformations (alpha helix and beta sheet). Calculations are performed at the M06-2X-SMD/6-31++G(d,p) level of theory. DHLA has shown to be an excellent antioxidant repair agent through hydrogen-transfer reaction involving the thiol groups, with rate constants close to diffusion control in most cases. The stability of the initial protein radical is not the most important factor determining the rate of the repair reaction because stabilizing intermolecular interactions involving the protein and the antioxidant can provide additional stability to some transition states accelerating the repair of sites that would otherwise not be so quickly repaired.
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Affiliation(s)
- Romina Castañeda-Arriaga
- Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, México
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
| | | | - JinGyu Lee
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
| | - J. Raul Alvarez-Idaboy
- Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, México
| | - Nelaine Mora-Diez
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
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23
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Tryptophan versus nitric oxide, nitrogen dioxide and carbonate radicals: differences in reactivity and implications for oxidative damage to proteins. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1913-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Ipson BR, Fisher AL. Roles of the tyrosine isomers meta-tyrosine and ortho-tyrosine in oxidative stress. Ageing Res Rev 2016; 27:93-107. [PMID: 27039887 DOI: 10.1016/j.arr.2016.03.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/20/2016] [Accepted: 03/30/2016] [Indexed: 12/11/2022]
Abstract
The damage to cellular components by reactive oxygen species, termed oxidative stress, both increases with age and likely contributes to age-related diseases including Alzheimer's disease, atherosclerosis, diabetes, and cataract formation. In the setting of oxidative stress, hydroxyl radicals can oxidize the benzyl ring of the amino acid phenylalanine, which then produces the abnormal tyrosine isomers meta-tyrosine or ortho-tyrosine. While elevations in m-tyrosine and o-tyrosine concentrations have been used as a biological marker of oxidative stress, there is emerging evidence from bacterial, plant, and mammalian studies demonstrating that these isomers, particularly m-tyrosine, directly produce adverse effects to cells and tissues. These new findings suggest that the abnormal tyrosine isomers could in fact represent mediators of the effects of oxidative stress. Consequently the accumulation of m- and o-tyrosine may disrupt cellular homeostasis and contribute to disease pathogenesis, and as result, effective defenses against oxidative stress can encompass not only the elimination of reactive oxygen species but also the metabolism and ultimately the removal of the abnormal tyrosine isomers from the cellular amino acid pool. Future research in this area is needed to clarify the biologic mechanisms by which the tyrosine isomers damage cells and disrupt the function of tissues and organs and to identify the metabolic pathways involved in removing the accumulated isomers after exposure to oxidative stress.
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Affiliation(s)
- Brett R Ipson
- MD/PhD Program, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; Department of Cell and Structural Biology, Graduate School of Biomedical Sciences, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; Center for Healthy Aging, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Alfred L Fisher
- Center for Healthy Aging, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; GRECC, South Texas VA Health Care System, San Antonio, TX, United States.
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25
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Wood GPF, Sreedhara A, Moore JM, Wang J, Trout BL. Mechanistic Insights into Radical-Mediated Oxidation of Tryptophan from ab Initio Quantum Chemistry Calculations and QM/MM Molecular Dynamics Simulations. J Phys Chem A 2016; 120:2926-39. [DOI: 10.1021/acs.jpca.6b02429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Geoffrey P. F. Wood
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, E19-502b, Cambridge, Massachusetts 02139, United States
| | - Alavattam Sreedhara
- Late
Stage Pharmaceutical Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States
| | - Jamie M. Moore
- Late
Stage Pharmaceutical Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Bernhardt L. Trout
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, E19-502b, Cambridge, Massachusetts 02139, United States
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26
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Uranga J, Lakuntza O, Ramos-Cordoba E, Matxain JM, Mujika JI. A computational study of radical initiated protein backbone homolytic dissociation on all natural amino acids. Phys Chem Chem Phys 2016; 18:30972-30981. [DOI: 10.1039/c6cp06529e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydroxyl radical (˙OH) is known to be one of the most reactive species. The attack of this radical onto the backbone of all natural amino acids is investigated.
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Affiliation(s)
- Jon Uranga
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
| | - Oier Lakuntza
- Institut Catala d'Investigacio Quimica (ICIQ)
- 43007 Tarragona
- Spain
| | - Eloy Ramos-Cordoba
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
- Department of Chemistry
| | - Jon M. Matxain
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
| | - Jon I. Mujika
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
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27
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Uranga J, Mujika JI, Matxain JM. ·OH Oxidation Toward S- and OH-Containing Amino Acids. J Phys Chem B 2015; 119:15430-42. [DOI: 10.1021/acs.jpcb.5b09825] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jon Uranga
- Kimika Fakultatea,
Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International
Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
| | - Jon I. Mujika
- Kimika Fakultatea,
Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International
Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
| | - Jon M. Matxain
- Kimika Fakultatea,
Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International
Physics Center (DIPC), P.K. 1072, 20080 Donostia, Euskadi, Spain
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28
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Ehrenshaft M, Deterding LJ, Mason RP. Tripping up Trp: Modification of protein tryptophan residues by reactive oxygen species, modes of detection, and biological consequences. Free Radic Biol Med 2015; 89:220-8. [PMID: 26393422 PMCID: PMC4684788 DOI: 10.1016/j.freeradbiomed.2015.08.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 08/07/2015] [Accepted: 08/08/2015] [Indexed: 01/22/2023]
Abstract
Proteins comprise a majority of the dry weight of a cell, rendering them a major target for oxidative modification. Oxidation of proteins can result in significant alterations in protein molecular mass such as breakage of the polypeptide backbone and/or polymerization of monomers into dimers, multimers, and sometimes insoluble aggregates. Protein oxidation can also result in structural changes to amino acid residue side chains, conversions that have only a modest effect on protein size but can have widespread consequences for protein function. There are a wide range of rate constants for amino acid reactivity, with cysteine, methionine, tyrosine, phenylalanine, and tryptophan having the highest rate constants with commonly encountered biological oxidants. Free tryptophan and tryptophan protein residues react at a diffusion-limited rate with hydroxyl radical and also have high rate constants for reactions with singlet oxygen and ozone. Although oxidation of proteins in general and tryptophan residues specifically can have effects detrimental to the health of cells and organisms, some modifications are neutral, whereas others contribute to the function of the protein in question or may act as a signal that damaged proteins need to be replaced. This review provides a brief overview of the chemical mechanisms by which tryptophan residues become oxidized, presents both the strengths and the weaknesses of some of the techniques used to detect these oxidative interactions, and discusses selected examples of the biological consequences of tryptophan oxidation in proteins from animals, plants, and microbes.
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Affiliation(s)
- Marilyn Ehrenshaft
- Immunity, Inflammation and Disease Laboratory and National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA.
| | - Leesa J Deterding
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Ronald P Mason
- Immunity, Inflammation and Disease Laboratory and National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
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Zhao EH, Ergul B, Zhao W. Caffeine's antioxidant potency optically sensed with double-stranded DNA-encased single-walled carbon nanotubes. J Phys Chem B 2015; 119:4068-75. [PMID: 25714428 DOI: 10.1021/acs.jpcb.5b00708] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is great interest in developing a sensitive method being able to quantitatively measure and compare antioxidant potencies of samples of interest against multiple reactive oxygen species (ROS) whose imbalance could cause oxidative stress. Here, a sensitive nanoprobe, double-stranded DNA encased single-walled carbon nanotubes (SWNTs) has been developed to determine antioxidant potencies of selected samples (caffeine, regular coffee, and decaffeinated coffee) against ROS, hydrogen peroxide, and hydroxyl radicals. Antioxidant vitamin C and uric acid are used as standards. The method focuses on unique dual optical sensing capability of SWNTs, the rate of spectral suppression when exposed to ROS, and the magnitude of spectral recovery of the ROS-suppressed SWNTs when an antioxidant is added. It is found that the dual sensing capability of SWNTs is still sustained when reacting with the reactive hydroxyl radicals. The results show that caffeine's antioxidant potency is weak, about one millionth of those of vitamin C and uric acid. It is a better scavenger of hydrogen peroxide and a little less effective for hydroxyl radicals. In comparison, coffee, regardless of regular or decaffeinated, is a more efficient antioxidant than caffeine, having an antioxidant potency about ten thousand times stronger. This work provides a versatile detection method for evaluating the antioxidant potencies of samples of interest against various ROS for chemical, biological, and medical applications.
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Affiliation(s)
- Edward H Zhao
- Department of Chemistry, University of Arkansas at Little Rock , 2801 South University Avenue, Little Rock, Arkansas 72204, United States
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Castañeda-Arriaga R, Mora-Diez N, Alvarez-Idaboy JR. Modelling the chemical repair of protein carbon-centered radicals formed via oxidative damage with dihydrolipoic acid. RSC Adv 2015. [DOI: 10.1039/c5ra20618a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dihydrolipoic acid repairs carbon-centred radicals at diffusion-controlled rates via HAT mechanism.
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Affiliation(s)
- Romina Castañeda-Arriaga
- Facultad de Química
- Departamento de Física y Química Teórica
- Universidad Nacional Autónoma de México
- México DF 04510
- México
| | | | - J. Raul Alvarez-Idaboy
- Facultad de Química
- Departamento de Física y Química Teórica
- Universidad Nacional Autónoma de México
- México DF 04510
- México
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Wood GPF, Sreedhara A, Moore JM, Trout BL. Reactions of Benzene and 3-Methylpyrrole with the •OH and •OOH Radicals: An Assessment of Contemporary Density Functional Theory Methods. J Phys Chem A 2014; 118:2667-82. [DOI: 10.1021/jp5009708] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Geoffrey P. F. Wood
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, E19-502b, Cambridge, Massachusetts 02139, United States
| | - Alavattam Sreedhara
- Late
Stage Pharmaceutical Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States
| | - Jamie M. Moore
- Late
Stage Pharmaceutical Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States
| | - Bernhardt L. Trout
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, E19-502b, Cambridge, Massachusetts 02139, United States
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Cerón-Carrasco JP, Jacquemin D, Dumont E. Impact of DNA Environment on the Intrastrand Cross-Link Lesions: Hydrogen Atom Release as the Last Step of Formation of G[8-5m]T. J Phys Chem B 2013; 117:16397-404. [DOI: 10.1021/jp408947u] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- José Pedro Cerón-Carrasco
- Departamento
de Quı́mica Fı́sica, Universidad de Murcia, 30100 Murcia, Spain
- CEISAM, UMR CNRS 6230, BP 92208, Université de Nantes, 2 Rue de la Houssinière, 44322 Nantes, Cedex 3, France
| | - Denis Jacquemin
- CEISAM, UMR CNRS 6230, BP 92208, Université de Nantes, 2 Rue de la Houssinière, 44322 Nantes, Cedex 3, France
- Institut Universitaire de France, 103 bd St Michel, 75005 Paris, Cedex 5, France
| | - Elise Dumont
- Laboratoire de Chimie, UMR 5182 CNRS, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon, Cedex 07, France
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