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Harrison TJ, Chen X, Yasoshima K, Bauer D. Phototoxicity─Medicinal Chemistry Strategies for Risk Mitigation in Drug Discovery. J Med Chem 2023. [PMID: 37450689 DOI: 10.1021/acs.jmedchem.3c00749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Phototoxicity is a common safety concern encountered by project teams in pharmaceutical research and has the potential to stop progression of an otherwise promising candidate molecule. This perspective aims to provide an overview of the approaches toward mitigation of phototoxicity that medicinal chemists have taken during the lead optimization phase in the context of regulatory standards for photosafety evaluation. Various strategies are laid out based on available literature examples in order to highlight how structural modification can be utilized toward successful mitigation of a phototoxicity liability. A proposed flowchart is presented as a guidance tool to be used by the practicing medicinal chemist when facing a phototoxicity risk. The description of available tools to consider in the drug design process will include an overview of the evolution of in silico methods and their application as well as structure alerts for consideration as potential phototoxicophores.
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Affiliation(s)
- Tyler J Harrison
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research, 22 Windsor Street, Cambridge, Massachusetts 02139, United States
| | - Xin Chen
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research, 22 Windsor Street, Cambridge, Massachusetts 02139, United States
| | - Kayo Yasoshima
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research, 22 Windsor Street, Cambridge, Massachusetts 02139, United States
| | - Daniel Bauer
- Preclinical Safety, Novartis Institutes for Biomedical Research, 4002 Basel, Switzerland
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2
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Kowalska J, Rok J, Rzepka Z, Wrześniok D. Drug-Induced Photosensitivity-From Light and Chemistry to Biological Reactions and Clinical Symptoms. Pharmaceuticals (Basel) 2021; 14:723. [PMID: 34451820 PMCID: PMC8401619 DOI: 10.3390/ph14080723] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 02/07/2023] Open
Abstract
Photosensitivity is one of the most common cutaneous adverse drug reactions. There are two types of drug-induced photosensitivity: photoallergy and phototoxicity. Currently, the number of photosensitization cases is constantly increasing due to excessive exposure to sunlight, the aesthetic value of a tan, and the increasing number of photosensitizing substances in food, dietary supplements, and pharmaceutical and cosmetic products. The risk of photosensitivity reactions relates to several hundred externally and systemically administered drugs, including nonsteroidal anti-inflammatory, cardiovascular, psychotropic, antimicrobial, antihyperlipidemic, and antineoplastic drugs. Photosensitivity reactions often lead to hospitalization, additional treatment, medical management, decrease in patient's comfort, and the limitations of drug usage. Mechanisms of drug-induced photosensitivity are complex and are observed at a cellular, molecular, and biochemical level. Photoexcitation and photoconversion of drugs trigger multidirectional biological reactions, including oxidative stress, inflammation, and changes in melanin synthesis. These effects contribute to the appearance of the following symptoms: erythema, swelling, blisters, exudation, peeling, burning, itching, and hyperpigmentation of the skin. This article reviews in detail the chemical and biological basis of drug-induced photosensitivity. The following factors are considered: the chemical properties, the influence of individual ranges of sunlight, the presence of melanin biopolymers, and the defense mechanisms of particular types of tested cells.
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Affiliation(s)
| | | | | | - Dorota Wrześniok
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (J.K.); (J.R.); (Z.R.)
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3
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Manfrin A, Hänggli A, van den Wildenberg J, McNeill K. Substituent Effects on the Direct Photolysis of Benzotrifluoride Derivatives. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:11109-11117. [PMID: 32786608 DOI: 10.1021/acs.est.9b07429] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The chemical class of benzotrifluoride derivatives is widely used in active ingredients of various commercial products, such as pharmaceuticals, pesticides, herbicides, and crop protection agents. Past studies have shown that some benzotrifluorides are not stable under UV irradiation in water and convert into benzoic acids due to C-F bond hydrolysis. It was also observed, but never systematically studied, that the ring substituents play an important role on the direct photochemical reactivity of the CF3 moiety. In the present work, we explore the structure-reactivity relationship between ring substituent and direct photodefluorination for 16 different substituents, by determining fluoride production rates, quantum yields, and half-lives, and found that strong electron-donating groups enhance the reactivity toward hydrolysis. In addition, flufenamic acid, travoprost, dutasteride, cyflumetofen, flutoanil, and teriflunomide were also examined, finding that their direct photochemical reactivity could be qualitatively predicted based on their ring substituents. We provide here a tool to evaluate the environmental persistence of benzotrifluoride contaminants, as well as to design more photodegradable new active ingredients.
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Affiliation(s)
- Alessandro Manfrin
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
| | - Aline Hänggli
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
| | | | - Kristopher McNeill
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
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4
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Johnson BM, Shu YZ, Zhuo X, Meanwell NA. Metabolic and Pharmaceutical Aspects of Fluorinated Compounds. J Med Chem 2020; 63:6315-6386. [PMID: 32182061 DOI: 10.1021/acs.jmedchem.9b01877] [Citation(s) in RCA: 276] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The applications of fluorine in drug design continue to expand, facilitated by an improved understanding of its effects on physicochemical properties and the development of synthetic methodologies that are providing access to new fluorinated motifs. In turn, studies of fluorinated molecules are providing deeper insights into the effects of fluorine on metabolic pathways, distribution, and disposition. Despite the high strength of the C-F bond, the departure of fluoride from metabolic intermediates can be facile. This reactivity has been leveraged in the design of mechanism-based enzyme inhibitors and has influenced the metabolic fate of fluorinated compounds. In this Perspective, we summarize the literature associated with the metabolism of fluorinated molecules, focusing on examples where the presence of fluorine influences the metabolic profile. These studies have revealed potentially problematic outcomes with some fluorinated motifs and are enhancing our understanding of how fluorine should be deployed.
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Affiliation(s)
- Benjamin M Johnson
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, 100 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Yue-Zhong Shu
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Xiaoliang Zhuo
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, 100 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Nicholas A Meanwell
- Discovery Chemistry Platforms, Small Molecule Drug Discovery, Bristol Myers Squibb Company, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
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5
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Molins-Molina O, Pérez-Ruiz R, Lence E, González-Bello C, Miranda MA, Jiménez MC. Photobinding of Triflusal to Human Serum Albumin Investigated by Fluorescence, Proteomic Analysis, and Computational Studies. Front Pharmacol 2019; 10:1028. [PMID: 31616294 PMCID: PMC6764118 DOI: 10.3389/fphar.2019.01028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/12/2019] [Indexed: 11/13/2022] Open
Abstract
Triflusal is a platelet antiaggregant employed for the treatment and prevention of thromboembolic diseases. After administration, it is biotransformed into its active metabolite, the 2-hydroxy-4-trifluoromethylbenzoic acid (HTB). We present here an investigation on HTB photobinding to human serum albumin (HSA), the most abundant protein in plasma, using an approach that combines fluorescence, MS/MS, and peptide fingerprint analysis as well as theoretical calculations (docking and molecular dynamics simulation studies). The proteomic analysis of HTB/HSA photolysates shows that HTB addition takes place at the ε-amino groups of the Lys137, Lys199, Lys205, Lys351, Lys432, Lys525, Lys541 and Lys545 residues and involves replacement of the trifluoromethyl moiety of HTB with a new amide function. Only Lys199 is located in an internal pocket of the protein, and the remaining modified residues are placed in the external part. Docking and molecular dynamic simulation studies reveal that HTB supramolecular binding to HSA occurs in the "V-cleft" region and that the process is assisted by the presence of Glu/Asp residues in the neighborhood of the external Lys, in agreement with the experimentally observed modifications. In principle, photobinding can occur with other trifluoroaromatic compounds and may be responsible for the appearance of undesired photoallergic side effects.
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Affiliation(s)
- Oscar Molins-Molina
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politécnica de València, Valencia, Spain
| | - Raúl Pérez-Ruiz
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politécnica de València, Valencia, Spain
| | - Emilio Lence
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Concepción González-Bello
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Miguel A Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politécnica de València, Valencia, Spain
| | - M Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politécnica de València, Valencia, Spain
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6
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Tisler S, Zindler F, Freeling F, Nödler K, Toelgyesi L, Braunbeck T, Zwiener C. Transformation Products of Fluoxetine Formed by Photodegradation in Water and Biodegradation in Zebrafish Embryos ( Danio rerio). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7400-7409. [PMID: 31136157 DOI: 10.1021/acs.est.9b00789] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The present study investigates the transformation of the antidepressant fluoxetine (FLX) by photo- and biodegradation and shows similarities and differences in transformation products (TPs). TPs were identified using LC-high-resolution mass spectrometry with positive and negative electrospray ionization. In a sunlight simulator, photodegradation was carried out using ultrapure water (pH 6, 8, and 10) and surface water (pH 8) to study the effect of direct and indirect photolysis, respectively. The well-known metabolite norfluoxetine (NFLX) proved to be a minor TP in photolysis (≤2% of degraded FLX). In addition, 26 TPs were detected, which were formed by cleavage of the phenolether bond ( O-dealkylation) which primarily formed 3-(methylamino)-1-phenyl-1-propanol (TP 166) and 4-(trifluoromethyl)phenol, by hydroxylation of the benzyl moiety, by CF3 substitution to benzoic aldehyde/acid, and by adduct formation at the amine group ( N-acylation with aldehydes and carboxylic acids). Higher pH favors the neutral species of FLX and the neutral/anionic species of primary TPs and, therefore, photodegradation. In zebrafish embryos, the bioconcentration factor of FLX was found to be 110, and about 1% of FLX taken up by the embryos was transformed to NFLX. Seven metabolites known from photodegradation and formed by hydrolysis, hydroxylation, and N-acylation as well as three new metabolites formed by N-hydroxylation, N-methylation, and attachment of an amine group were identified in zebrafish embryos. The study highlights the importance of considering a broad range of TPs of FLX in fresh water systems and in ecotoxicity tests and to include TP formation in both environmental processes and metabolism in organisms.
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Affiliation(s)
- Selina Tisler
- Environmental Analytical Chemistry, ZAG , University of Tübingen , Hölderlinstrasse 12 , 72074 Tübingen , Germany
| | - Florian Zindler
- Aquatic Ecology & Toxicology , Centre for Organismal Studies, University of Heidelberg , Im Neuenheimer Feld 504, Heidelberg 69120 , Germany
| | | | - Karsten Nödler
- TZW: DVGW-Technologiezentrum Wasser , 76139 Karlsruhe , Germany
| | | | - Thomas Braunbeck
- Aquatic Ecology & Toxicology , Centre for Organismal Studies, University of Heidelberg , Im Neuenheimer Feld 504, Heidelberg 69120 , Germany
| | - Christian Zwiener
- Environmental Analytical Chemistry, ZAG , University of Tübingen , Hölderlinstrasse 12 , 72074 Tübingen , Germany
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7
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Solís RR, Gimeno O, Rivas FJ, Beltrán FJ. Simulated solar driven photolytic ozonation for the oxidation of aqueous recalcitrant-to-ozone tritosulfuron. Transformation products and toxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:513-522. [PMID: 30594116 DOI: 10.1016/j.jenvman.2018.12.068] [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: 09/17/2018] [Revised: 12/10/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
This work reports the combination of ozone and solar radiation as an advanced oxidation process to remove the herbicide tritosufuron (TSF) in water. Firstly, the recalcitrance of TSF has been assessed, obtaining an ozonation second order rate constant of 5-154 M-1 min-1 in the range of pH from 5 to 8; while the rate constant with HO was found to be (1.8-3.1)·109 M-1 s-1. Secondly, the simultaneous application of simulated solar radiation in between 300 and 800 nm and ozone resulted positive in the oxidation rate of TSF. Mineralization extent was also higher. Less effective oxidation was achieved after limiting the radiation to the range 360-800 nm or 390-800 nm; also completely inappropriate for mineralization. Thirdly, the detected transformation products (TPs) demonstrated the vulnerability of TSF molecule to be attacked by HO in the sulfonylurea bridge. The combination of ozone and radiation of 300-800 nm led to the most effective removal of the TPs. Finally, after the photolytic ozonation treatment toxicity was also evaluated in terms of phytotoxicity towards the germination and root elongation of Lactuca Sativa seeds, and toxicity by immobilization tests of Daphnia Magna.
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Affiliation(s)
- Rafael R Solís
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain.
| | - Olga Gimeno
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
| | - F Javier Rivas
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
| | - Fernando J Beltrán
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
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8
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Pérez-Ruiz R, Molins-Molina O, Lence E, González-Bello C, Miranda MA, Jiménez MC. Photogeneration of Quinone Methides as Latent Electrophiles for Lysine Targeting. J Org Chem 2018; 83:13019-13029. [PMID: 30274513 DOI: 10.1021/acs.joc.8b01559] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Latent electrophiles are nowadays very attractive chemical entities for drug discovery, as they are unreactive unless activated upon binding with the specific target. In this work, the utility of 4-trifluoromethyl phenols as precursors of latent electrophiles, quinone methides (QM), for lysine-targeting is demonstrated. These Michael acceptors were photogenerated for specific covalent modification of lysine residues using human serum albumin (HSA) as a model target. The reactive QM-type intermediates I or II, generated upon irradiation of 4-trifluoromethyl-1-naphthol (1)@HSA or 4-(4-trifluorometylphenyl)phenol (2)@HSA complexes, exhibited chemoselective reactivity toward lysine residues leading to amide adducts, which was confirmed by proteomic analysis. For ligand 1, the covalent modification of residues Lys106 and Lys414 (located in subdomains IA and IIIA, respectively) was observed, whereas for ligand 2, the modification of Lys195 (in subdomain IIA) took place. Docking and molecular dynamics simulation studies provided an insight into the molecular basis of the selectivity of 1 and 2 for these HSA subdomains and the covalent modification mechanism. These studies open the opportunity of performing protein silencing by generating reactive ligands under very mild conditions (irradiation) for specific covalent modification of hidden lysine residues.
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Affiliation(s)
- Raúl Pérez-Ruiz
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC , Universitat Politécnica de València , Camino de Vera s/n , 46071 Valencia , Spain.,Photoactivated Processes Unit , IMDEA Energy Institute , Av. Ramón de la Sagra 3 , 28935 Móstoles, Madrid , Spain
| | - Oscar Molins-Molina
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC , Universitat Politécnica de València , Camino de Vera s/n , 46071 Valencia , Spain
| | - Emilio Lence
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica , Universidade de Santiago de Compostela , Jenaro de la Fuente s/n , 15782 Santiago de Compostela , Spain
| | - Concepción González-Bello
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica , Universidade de Santiago de Compostela , Jenaro de la Fuente s/n , 15782 Santiago de Compostela , Spain
| | - Miguel A Miranda
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC , Universitat Politécnica de València , Camino de Vera s/n , 46071 Valencia , Spain
| | - M Consuelo Jiménez
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC , Universitat Politécnica de València , Camino de Vera s/n , 46071 Valencia , Spain
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9
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Agudo-Mena JL, Romero-Pérez D, Encabo-Durán B, Álvarez-Chinchilla PJ, Silvestre-Salvador JF. Photoallergic contact dermatitis caused by quinidine sulfate in a caregiver. Contact Dermatitis 2017; 77:131-132. [PMID: 28703350 DOI: 10.1111/cod.12774] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 01/06/2017] [Accepted: 01/10/2017] [Indexed: 11/30/2022]
Affiliation(s)
- José L Agudo-Mena
- Department of Dermatology, Complejo Hospitalario Universitario de Albacete, University of Castilla La Mancha, 02006, Albacete, Spain
| | - David Romero-Pérez
- Department of Dermatology, Hospital General Universitario de Alicante, ISABIAL, FISABIO, 03010, Alicante, Spain
| | - Belén Encabo-Durán
- Department of Dermatology, Hospital General Universitario de Alicante, ISABIAL, FISABIO, 03010, Alicante, Spain
| | - Pedro J Álvarez-Chinchilla
- Department of Dermatology, Hospital General Universitario de Alicante, ISABIAL, FISABIO, 03010, Alicante, Spain
| | - Juan F Silvestre-Salvador
- Department of Dermatology, Hospital General Universitario de Alicante, ISABIAL, FISABIO, 03010, Alicante, Spain
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10
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Nuin E, Pérez-Sala D, Lhiaubet-Vallet V, Andreu I, Miranda MA. Photosensitivity to Triflusal: Formation of a Photoadduct with Ubiquitin Demonstrated by Photophysical and Proteomic Techniques. Front Pharmacol 2016; 7:277. [PMID: 27621705 PMCID: PMC5002410 DOI: 10.3389/fphar.2016.00277] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 08/12/2016] [Indexed: 11/13/2022] Open
Abstract
Triflusal is a platelet aggregation inhibitor chemically related to acetylsalicylic acid, which is used for the prevention and/or treatment of vascular thromboembolisms, which acts as a prodrug. Actually, after oral administration it is absorbed primarily in the small intestine, binds to plasma proteins (99%) and is rapidly biotransformed in the liver into its deacetylated active metabolite 2-hydroxy-4-trifluoromethylbenzoic acid (HTB). In healthy humans, the half-life of triflusal is ca. 0.5 h, whereas for HTB it is ca. 35 h. From a pharmacological point of view, it is interesting to note that HTB is itself highly active as a platelet anti-aggregant agent. Indeed, studies on the clinical profile of both drug and metabolite have shown no significant differences between them. It has been evidenced that HTB displays ability to induce photoallergy in humans. This phenomenon involves a cell-mediated immune response, which is initiated by covalent binding of a light-activated photosensitizer (or a species derived therefrom) to a protein. In this context, small proteins like ubiquitin could be appropriate models for investigating covalent binding by means of MS/MS and peptide fingerprint analysis. In previous work, it was shown that HTB forms covalent photoadducts with isolated lysine. Interestingly, ubiquitin contains seven lysine residues that could be modified by a similar reaction. With this background, the aim of the present work is to explore adduct formation between the triflusal metabolite and ubiquitin as model protein upon sunlight irradiation, combining proteomic and photophysical (fluorescence and laser flash photolysis) techniques. Photophysical and proteomic analysis demonstrates monoadduct formation as the major outcome of the reaction. Interestingly, addition can take place at any of the ε-amino groups of the lysine residues of the protein and involves replacement of the trifluoromethyl moiety with a new amide function. This process can in principle occur with other trifluoroaromatic compounds and may be responsible for the appearance of undesired photoallergic side effects.
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Affiliation(s)
- Edurne Nuin
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Valencia, Spain
| | - Dolores Pérez-Sala
- Departamento de Biología Físico-Química, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas Madrid, Spain
| | - Virginie Lhiaubet-Vallet
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Valencia, Spain
| | - Inmaculada Andreu
- Unidad Mixta de Investigación IIS La Fe-UPV, Hospital Universitari i Politècnic La Fe Valencia, Spain
| | - Miguel A Miranda
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Valencia, Spain
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11
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Photochemical transformation of flufenamic acid by artificial sunlight in aqueous solutions. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Watanabe Y, Fukuyoshi S, Oda A. Comparison of photoreactions of flutamide in acetonitrile and 2-propanol solvents in the absence of cage-forming compounds. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Vayá I, Lhiaubet-Vallet V, Jiménez MC, Miranda MA. Photoactive assemblies of organic compounds and biomolecules: drug–protein supramolecular systems. Chem Soc Rev 2014; 43:4102-22. [DOI: 10.1039/c3cs60413f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modification of the drug excited state properties within proteins provides information on binding and may result in a different photoreactivity.
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Affiliation(s)
- Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - Virginie Lhiaubet-Vallet
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - M. Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
| | - Miguel A. Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC
- Universitat Politècnica de València
- E-46071 Valencia, Spain
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14
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Trautwein C, Kümmerer K. Ready biodegradability of trifluoromethylated phenothiazine drugs, structural elucidation of their aquatic transformation products, and identification of environmental risks studied by LC-MS( n ) and QSAR. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2012; 19:3162-3177. [PMID: 22678547 DOI: 10.1007/s11356-012-1002-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 05/21/2012] [Indexed: 06/01/2023]
Abstract
The environmental fate of transformation products from organic pollutants such as drugs has become a new research area of increasing interest over the last few years. Whereas in the past mainly parent compounds or their major human metabolites were studied, new questions have arisen what compounds could be formed during incomplete degradation in the aquatic environment and what effects the resulting transformation products might have on nature and mankind. Psychiatric drugs are among the most important prescription drugs worldwide, but so far only little data is provided upon their degradation behavior. This especially accounts for tricyclic antipsychotic drugs of the phenothiazine class. Therefore, the degradation of such drugs was investigated in this study. In this study the aerobic Closed Bottle test (The Organisation for Economic Co-operation and Development (OECD) 301D) was used to assess the ready biodegradability of three trifluoromethylated phenothiazine drugs: fluphenazine, triflupromazine, and trifluoperazine. As it is known from literature that phenothiazine drugs can easily form various photolytic transformation products under light exposure, photochemical transformation was also investigated. Since transformation products are usually not available commercially, the calculation of environmental parameters with the aid of quantitative structure activity relationship (QSAR) software was used for first evaluation of these compounds. According to the OECD test guideline, all trifluoromethylated phenothiazines had to be classified as not readily biodegradable. Chromatographic data revealed the formation of some transformation products. Comparing retention time and mass spectrometric data with the analytical results of the light exposure experiments, we found peaks with the same retention time and mass spectra. So these transformation products were not of bacterial, but photolytic, origin and are formed very quickly even under low light doses. A special chromatographic column and solvent gradient along with multiple stage mass spectrometric fragmentation experiments uncovered the presence of, in total, nine photolytic transformation products and allowed for their structural elucidation. Typical modifications of the molecules were sulfoxidation, exocyclic N-oxidation, and transformation of the trifluoromethyl to a carboxylic moiety. The obtained results of the QSAR calculations show that all transformation products are highly mobile in the aquatic environment and elimination through biotic or abiotic pathways cannot be expected. Transformation products of trifluoromethylated phenothiazine drugs have to be expected in the aquatic environment, yet nothing is known about their toxicological properties. Therefore, further risk assessment upon these drugs and their fate is strongly recommended.
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Affiliation(s)
- Christoph Trautwein
- Department of Environmental Health Sciences, University Medical Centre Freiburg, Breisacher Str. 115B, 79106 Freiburg, Germany.
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Montanaro S, Lhiaubet-Vallet V, Jiménez M, Blanca M, Miranda M. Photonucleophilic Addition of the ε-Amino Group of Lysine to a Triflusal Metabolite as a Mechanistic Key to Photoallergy Mediated by the Parent Drug. ChemMedChem 2009; 4:1196-202. [DOI: 10.1002/cmdc.200900066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Caffieri S, Miolo G, Seraglia R, Dalzoppo D, Toma FM, van Henegouwen GMJB. Photoaddition of Fluphenazine to Nucleophiles in Peptides and Proteins. Possible Cause of Immune Side Effects. Chem Res Toxicol 2007; 20:1470-6. [PMID: 17883260 DOI: 10.1021/tx700123u] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By the action of UVA light, fluphenazine reacted with nucleophiles through a mechanism involving defluorination of its trifluoromethyl group, giving rise to carboxylic acid derivatives that were easily detected by electrospray mass spectrometry. This photoreaction took place with alcohols, sulphydryls, and amines. When irradiation of fluphenazine was carried out in the presence of an amino acid at pH 7.4, the alpha-amino group was covalently bound to the drug. With amino acids possessing a further nucleophilic residue on the side chain, such as lysine, tyrosine, and cysteine--but not serine--both groups reacted, resulting in a fluphenazine-amino acid-fluphenazine diadduct. The same occurred with the physiological peptide glutathione (gamma-glutamylcysteinylglycine). By means of MALDI mass spectrometry, it was shown that fluphenazine also covalently bound to peptides and proteins such as calmodulin. This binding may result in the formation of antibodies, ultimately leading to the destruction of the granulocytes and thus suggesting that photoactivation of this drug may play a role in its clinical side effects, such as agranulocytosis.
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Affiliation(s)
- Sergio Caffieri
- Department of Pharmaceutical Sciences, University of Padova, Italy.
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Sun M, Liu D. Defluorination degradation of trifluoromethyl groups identified by tandem mass spectrometry coupled with stable isotope incorporation strategy. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:2227-9. [PMID: 16791870 DOI: 10.1002/rcm.2571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
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Lam MW, Young CJ, Mabury SA. Aqueous photochemical reaction kinetics and transformations of fluoxetine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2005; 39:513-522. [PMID: 15707051 DOI: 10.1021/es0494757] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fluoxetine (FLX) was shown to be photoreactive in sunlit surface waters. FLX degraded in deionized water when exposed to simulated sunlight with a half-life of 55.2+/-3.6 h(-1). Photodegradation products were identified using high performance liquid chromatography-UV (HPLC-UV) and liquid chromatography tandem mass spectrometry (LC-MS-MS) using electrospray (ES) ionization. Defluorination of the trifluoromethyl group in FLX and in fluometuron and flutalanil,two other compounds containing this functional group, is suggested to be a common direct photolysis pathway for trifluoromethylated compounds. Products resulting from O-dealkylation of FLX were also observed. The rate of degradation was faster in synthetic field water where .OH was the likely dominant oxidant in the system. The bimolecular rate constant for the reaction between FLX and .OH was measured as (8.4+/-0.5) x 10(9) and (9.6 +/-0.8) x 10(9) M(-1) s(-1) using two different methods of competition kinetics. Indirect photodegradation reactions could lead to the production of hydroxylated and O-dealkylated compounds. Although direct photolysis could potentially limitthe persistence of FLX in surface waters, its degradation by indirect photolysis would proceed faster. Thus, this latter process could be important in the elimination of FLX in surface waters.
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Affiliation(s)
- Monica W Lam
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
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Joshi HC, Gooijer C, van der Zwan G. Water-Induced Quenching of Salicylic Anion Fluorescence. J Phys Chem A 2002. [DOI: 10.1021/jp020442s] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hem C. Joshi
- Department of Analytical Chemistry and Applied Spectroscopy, Laser Centre, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Cees Gooijer
- Department of Analytical Chemistry and Applied Spectroscopy, Laser Centre, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Gert van der Zwan
- Department of Analytical Chemistry and Applied Spectroscopy, Laser Centre, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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