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Tamarit L, El Ouardi M, Lence E, Andreu I, González-Bello C, Vayá I, Miranda MA. Switching from ultrafast electron transfer to proton transfer in excited drug–protein complexes upon biotransformation. Chem Sci 2022; 13:9644-9654. [PMID: 36091919 PMCID: PMC9400592 DOI: 10.1039/d2sc03257k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022] Open
Abstract
Photosensitization by drugs is directly related with the excited species and the photoinduced processes arising from interaction with UVA light. In this context, the ability of gefitinib (GFT), a tyrosine kinase inhibitor (TKI) used for the treatment of a variety of cancers, to induce phototoxicity and photooxidation of proteins has recently been demonstrated. In principle, photodamage can be generated not only by a given drug but also by its photoactive metabolites that maintain the relevant chromophore. In the present work, a complete study of O-desmorpholinopropyl gefitinib (GFT-MB) has been performed by means of fluorescence and ultrafast transient absorption spectroscopies, in addition to molecular dynamics (MD) simulations. The photobehavior of the GFT-MB metabolite in solution is similar to that of GFT. However, when the drug or its metabolite are in a constrained environment, i.e. within a protein, their behavior and the photoinduced processes that arise from their interaction with UVA light are completely different. For GFT in complex with human serum albumin (HSA), locally excited (LE) singlet states are mainly formed; these species undergo photoinduced electron transfer with Tyr and Trp. By contrast, since GFT-MB is a phenol, excited state proton transfer (ESPT) to form phenolate-like excited species might become an alternative deactivation pathway. As a matter of fact, the protein-bound metabolite exhibits higher fluorescence yields and longer emission wavelengths and lifetimes than GFT@HSA. Ultrafast transient absorption measurements support direct ESPT deprotonation of LE states (rather than ICT), to form phenolate-like species. This is explained by MD simulations, which reveal a close interaction between the phenolic OH group of GFT-MB and Val116 within site 3 (subdomain IB) of HSA. The reported findings are relevant to understand the photosensitizing properties of TKIs and the role of biotransformation in this type of adverse side effects. The photoinduced processes from the protein-bound GFT result in electron transfer, while those related with the photoactive metabolite GFT-MB induce excited state proton transfer to form phenolate-like excited species.![]()
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Affiliation(s)
- Lorena Tamarit
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
- Instituto de Investigación Sanitaria La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Meryem El Ouardi
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
- Instituto de Investigación Sanitaria La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026 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
| | - Inmaculada Andreu
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
- Instituto de Investigación Sanitaria La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026 Valencia, 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
| | - Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
- Instituto de Investigación Sanitaria La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Miguel A. Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
- Instituto de Investigación Sanitaria La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026 Valencia, Spain
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Ageeva AA, Doktorov AB, Selyutina OY, Magin IM, Ilyina MG, Borisevich SS, Rubtsov RY, Khursan SL, Stepanov AA, Vasilevsky SF, Polyakov NE, Leshina TV. Optical Configuration Effect on the Structure and Reactivity of Diastereomers Revealed by Spin Effects and Molecular Dynamics Calculations. Int J Mol Sci 2021; 23:ijms23010038. [PMID: 35008460 PMCID: PMC8744724 DOI: 10.3390/ijms23010038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 02/07/2023] Open
Abstract
The peculiarities of spin effects in photoinduced electron transfer (ET) in diastereomers of donor-acceptor dyads are considered in order to study the influence of chirality on reactivity. Thus, the spin selectivity—the difference between the enhancement coefficients of chemically induced dynamic nuclear polarization (CIDNP)—of the dyad’s diastereomers reflects the difference in the spin density distribution in its paramagnetic precursors that appears upon UV irradiation. In addition, the CIDNP coefficient itself has demonstrated a high sensitivity to the change of chiral centers: when one center is changed, the hyperpolarization of all polarized nuclei of the molecule is affected. The article analyzes the experimental values of spin selectivity based on CIDNP calculations and molecular dynamic modeling data in order to reveal the effect of optical configuration on the structure and reactivity of diastereomers. In this way, we succeeded in tracing the differences in dyads with L- and D-tryptophan as an electron donor. Since the replacement of L-amino acid with D-analog in specific proteins is believed to be the cause of Alzheimer’s and Parkinson’s diseases, spin effects and molecular dynamic simulation in model dyads can be a useful tool for investigating the nature of this phenomenon.
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Affiliation(s)
- Aleksandra A. Ageeva
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
- Department of Natural Sciences, Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Alexander B. Doktorov
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
- Correspondence:
| | - Olga Yu. Selyutina
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
| | - Ilya M. Magin
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
- Department of Natural Sciences, Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Margarita G. Ilyina
- Ufa Institute of Chemistry, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (M.G.I.); (S.S.B.); (S.L.K.)
| | - Sophia S. Borisevich
- Ufa Institute of Chemistry, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (M.G.I.); (S.S.B.); (S.L.K.)
- The Institute of Problems of Chemical Physics of the Russian Academy of Sciences, 142432 Chernogolovka, Russia;
| | - Ruslan Yu. Rubtsov
- The Institute of Problems of Chemical Physics of the Russian Academy of Sciences, 142432 Chernogolovka, Russia;
| | - Sergey L. Khursan
- Ufa Institute of Chemistry, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia; (M.G.I.); (S.S.B.); (S.L.K.)
| | - Alexander A. Stepanov
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
| | - Sergey F. Vasilevsky
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
| | - Nikolay E. Polyakov
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
- Department of Natural Sciences, Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Tatyana V. Leshina
- Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia; (A.A.A.); (O.Y.S.); (I.M.M.); (A.A.S.); (S.F.V.); (N.E.P.); (T.V.L.)
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Polyakov N, Ageeva A, Kiryutin A, Timoshnikov V, Magin I, Babenko S, Kuznetsova P, Kruppa A, Purtov P, Stepanov A, Ivanov M, Fedin M, Kuibida L, Leshina T. Spin effects as a tool to study photoinduced processes in (S/R)-ketoprofen-(S)-N-methylpyrrolidine dyads. J Chem Phys 2020; 151:245101. [PMID: 31893924 DOI: 10.1063/1.5128043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
(S/R)-Ketoprofen (KP) is considered to be the strongest photosensitizer among nonsteroidal anti-inflammatory drugs. The photosensitizing reactions are caused by a substituted benzophenone chromophore. It produces various toxic effects through the formation of active paramagnetic intermediates and photoproducts able to attack biological substrates. Photoinduced transformations of KP have been extensively studied in order to identify paramagnetic intermediates. Considerable attention is also paid to photoinduced processes in dyads, where KP is linked with chiral partners, since such processes believed to model the binding of chiral drugs with enzymes and receptors. In the present study, the dyads containing (S)/(R)-KP covalently linked with (S)-N-methylpyrrolidine have been synthesized to examine the peculiarities of photoinduced electron transfer (ET) and hydrogen transfer (HT) in chiral systems. To detect short-lived paramagnetic intermediates, in dyad's excited triplet state, such as biradical zwitter ion (BZI) and neutral biradical (BR), spin chemistry methods [chemically induced dynamic nuclear polarization (CIDNP) and chemically induced dynamic electron polarization (CIDEP) in arbitrary magnetic fields], allowing indirect detection of transient paramagnetic particles by NMR, have been utilized. Both mentioned processes have been found to begin with the excitation of KP into the triplet state followed by the formation of BZI for ET and BR for HT, respectively. Products of stereoselective attachment of the N-methylpyrrolidine residue to the carbonyl carbon atom of KP occurring in both BZI and BR have been detected by NMR spectral analysis. The value of electronic exchange interaction in biradicals has been determined from the position of the characteristic maximum of hyperpolarization in the CIDNP magnetic field dependences.
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Affiliation(s)
- Nikolay Polyakov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Aleksandra Ageeva
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | | | - Victor Timoshnikov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Ilya Magin
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Simon Babenko
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Polina Kuznetsova
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Alexander Kruppa
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Peter Purtov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Alexandr Stepanov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Mikhail Ivanov
- International Tomography Center SB RAS, Novosibirsk, Russia
| | - Matvey Fedin
- International Tomography Center SB RAS, Novosibirsk, Russia
| | - Leonid Kuibida
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
| | - Tatyana Leshina
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk, Russia
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Vayá I, Andreu I, Monje VT, Jiménez MC, Miranda MA. Mechanistic Studies on the Photoallergy Mediated by Fenofibric Acid: Photoreactivity with Serum Albumins. Chem Res Toxicol 2015; 29:40-6. [PMID: 26633742 DOI: 10.1021/acs.chemrestox.5b00357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The photoreactivity of fenofibric acid (FA) in the presence of human and bovine serum albumins (HSA and BSA, respectively) has been investigated by steady-state irradiation, fluorescence, and laser flash photolysis (LFP). Spectroscopic measurements allowed for the determination of a 1:1 stoichiometry for the FA/SA complexes and pointed to a moderate binding of FA to the proteins; by contrast, the FA photoproducts were complexed more efficiently with SAs. Covalent photobinding to the protein, which is directly related to the photoallergic properties of the drug, was detected after long irradiation times and was found to be significantly higher in the case of BSA. Intermolecular FA-amino acid and FA-albumin irradiations resulted in the formation of photoproducts arising from coupling between both moieties, as indicated by mass spectrometric analysis. Mechanistic studies using model drug-amino acid linked systems indicated that the key photochemical step involved in photoallergy is formal hydrogen atom transfer from an amino acid residue to the excited benzophenone chromophore of FA or (more likely) its photoproducts. This results in the formation of caged radical pairs followed by C-C coupling to give covalent photoaducts.
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Affiliation(s)
- Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - Inmaculada Andreu
- Unidad Mixta de Investigación IIS La Fe-UPV, Hospital Universitari i Politècnic La Fe , Avenida de Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Vicente T Monje
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - M Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - Miguel A Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
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