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Rodríguez-Muñiz GM, Fraga-Timiraos AB, Navarrete-Miguel M, Borrego-Sánchez A, Roca-Sanjuán D, Miranda MA, Lhiaubet-Vallet V. Reductive Photocycloreversion of Cyclobutane Dimers Triggered by Guanines. J Org Chem 2023. [PMID: 37437138 PMCID: PMC10367068 DOI: 10.1021/acs.joc.3c00930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
The quest for simple systems achieving the photoreductive splitting of four-membered ring compounds is a matter of interest not only in organic chemistry but also in biochemistry to mimic the activity of DNA photorepair enzymes. In this context, 8-oxoguanine, the main oxidatively generated lesion of guanine, has been shown to act as an intrinsic photoreductant by transferring an electron to bipyrimidine lesions and provoking their cycloreversion. But, in spite of appropriate photoredox properties, the capacity of guanine to repair cyclobutane pyrimidine dimer is not clearly established. Here, dyads containing the cyclobutane thymine dimer and guanine or 8-oxoguanine are synthesized, and their photoreactivities are compared. In both cases, the splitting of the ring takes place, leading to the formation of thymine, with a quantum yield 3.5 times lower than that for the guanine derivative. This result is in agreement with the more favored thermodynamics determined for the oxidized lesion. In addition, quantum chemistry calculations and molecular dynamics simulations are carried out to rationalize the crucial aspects of the overall cyclobutane thymine dimer photoreductive repair triggered by the nucleobase and its main lesion.
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Affiliation(s)
- Gemma M Rodríguez-Muñiz
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Ana B Fraga-Timiraos
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Miriam Navarrete-Miguel
- Instituto de Ciencia Molecular, Universitat de València, P.O.Box 22085, 46071 València, Spain
| | - Ana Borrego-Sánchez
- Instituto de Ciencia Molecular, Universitat de València, P.O.Box 22085, 46071 València, Spain
| | - Daniel Roca-Sanjuán
- Instituto de Ciencia Molecular, Universitat de València, P.O.Box 22085, 46071 València, Spain
| | - Miguel A Miranda
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
| | - Virginie Lhiaubet-Vallet
- Instituto Universitario Mixto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain
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Blasco-Brusola A, Vayá I, Miranda MA. Influence of the Linking Bridge on the Photoreactivity of Benzophenone-Thymine Conjugates. J Org Chem 2020; 85:14068-14076. [PMID: 33108203 DOI: 10.1021/acs.joc.0c02088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Benzophenone (BP) is present in a variety of bioactive molecules. This chromophore is able to photosensitize DNA damage, where one of the most relevant BP/DNA interactions occurs with thymine (Thy). In view of the complex photoreactivity previously observed for dyads containing BP covalently linked to thymidine, the aim of this work is to investigate whether appropriate changes in the nature of the spacer could modulate the intramolecular BP/Thy photoreactivity, resulting in an enhanced selectivity. Accordingly, the photobehavior of a series of dyads derived from BP and Thy, separated by linear linkers of different length, has been investigated by steady-state photolysis, as well as femtosecond and nanosecond transient absorption spectroscopy. Irradiation of the dyads led to photoproducts arising from formal hydrogen abstraction or Paterno-Büchi (PB) photoreaction, with a chemoselectivity that was clearly dependent on the nature of the linking bridge; moreover, the PB process occurred with complete regio- and stereoselectivity. The overall photoreactivity increased with the length of the spacer and correlated well with the rate constants estimated from the BP triplet lifetimes. A reaction mechanism explaining these results is proposed, where the key features are the strain associated with the reactive conformations and the participation of triplet exciplexes.
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Affiliation(s)
- Alejandro Blasco-Brusola
- Departamento de Quı́mica, Instituto de Tecnologı́a Quı́mica (UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
| | - Ignacio Vayá
- Departamento de Quı́mica, Instituto de Tecnologı́a Quı́mica (UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
| | - Miguel A Miranda
- Departamento de Quı́mica, Instituto de Tecnologı́a Quı́mica (UPV-CSIC), Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
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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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Khramtsova EA, Ageeva AA, Stepanov AA, Plyusnin VF, Leshina TV. Photoinduced Electron Transfer in Dyads with (R)-/(S)-Naproxen and (S)-Tryptophan. ACTA ACUST UNITED AC 2016. [DOI: 10.1515/zpch-2016-0842] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Short-lived intermediates arising from the donor-acceptor interaction of non-steroidal anti-inflammatory drug (NSAID) – (S)-naproxen (NPX) and its (R)-enantiomer with the tryptophan amino acid residue (Trp) have been studied by spin chemistry and photochemistry methods. The donor-acceptor interaction has caried out in a model linked system – dyad under the UV-irradiation. Interest in the NPX-Trp dyad diastereomers is connected with the possibility of using them as models of ligand-enzyme binding as long as amino acid residues are located at the enzyme’s active centers. It is these residues that interact with NSAID during the binding. It is widely thought that charge transfer processes are involved in the process of drug-enzyme binding. Withing this framework the role of charge transfer in NPX-Trp excited state quenching have been investigated. The analysis of the chemically induced dynamic nuclear polarization (CIDNP), as well as fluorescence kinetics and quantum yield in different polarity media has shown that the main channel of NPX fluorescence quenching is the intramolecular electron transfer between NPX and Trp fragments. Electron transfer rate constants and fluorescence quantum yields of diastereomers have demonstrated stereodifferentiation.
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Affiliation(s)
- Ekaterina A. Khramtsova
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, Institutskaya str. 3, Novosibirsk, Russian Federation
- Novosibirsk State University, 630090, Pirogova str. 2, Novosibirsk, Russian Federation
| | - Alexandra A. Ageeva
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, Institutskaya str. 3, Novosibirsk, Russian Federation
| | - Alexander A. Stepanov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, Institutskaya str. 3, Novosibirsk, Russian Federation
| | - Viktor F. Plyusnin
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, Institutskaya str. 3, Novosibirsk, Russian Federation
- Novosibirsk State University, 630090, Pirogova str. 2, Novosibirsk, Russian Federation
| | - Tatyana V. Leshina
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, Institutskaya str. 3, Novosibirsk, Russian Federation
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Vayá I, Gustavsson T, Markovitsi D, Miranda MA, Jiménez MC. Influence of the spacer on the photoreactivity of flurbiprofen-tyrosine dyads. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Banerjee C, Maiti S, Mustafi M, Kuchlyan J, Banik D, Kundu N, Dhara D, Sarkar N. Effect of encapsulation of curcumin in polymeric nanoparticles: how efficient to control ESIPT process? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10834-44. [PMID: 25148375 DOI: 10.1021/la5023533] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
This paper demonstrates the photophysics of curcumin inside polymeric nanoparticles (NPs), which are being recently used as targeted drug delivery vehicles. For this purpose, we have prepared three polymeric NPs by ultrasonication method from three well-defined water-insoluble random copolymers. These copolymers having various degrees of hydrophobicity were synthesized via reversible addition-fragmentation transfer (RAFT) method using styrene and three different functional monomers, namely, 2-hydroxyethyl acrylate, 4-formylphenyl acrylate, and 4-vinylbenzyl chloride. The photophysics of the curcumin molecules inside the polymeric NPs have been monitored by applying tools like steady state and time-resolved fluorescence spectroscopy. An increase in fluorescence intensity along with an increase in the lifetime values indicated a perturbation of the excited state intramolecular proton transfer (ESIPT) process of curcumin inside the polymeric NPs.
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Affiliation(s)
- Chiranjib Banerjee
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, WB India
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Banerjee C, Ghosh S, Mandal S, Kuchlyan J, Kundu N, Sarkar N. Exploring the photophysics of curcumin in zwitterionic micellar system: an approach to control ESIPT process in the presence of room temperature ionic liquids (RTILs) and anionic surfactant. J Phys Chem B 2014; 118:3669-81. [PMID: 24617495 DOI: 10.1021/jp411778q] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this manuscript, we have modulated the photophysical properties of curcumin in a zwitterionic (N-hexadecyl-N,N-dimethylammonio-1-propanesulfonate (SB-16)) micellar aggregates with addition of room temperature ionic liquids (RTILs) as well as commonly used anionic surfactant (SDS), using steady-state and time-resolved spectroscopic techniques. To modulate the photophysics, first we studied its interaction with an SB-16 micellar system, then to further exploit its photophysics, three RTILs (EmimES, EmimBS, EmimHS) with variation of alkyl chain lengths as well as SDS were used. It is observed that the rate of degradation of curcumin is drastically decreased after partitioning into the zwitterionic micellar system. It is shown that the dynamics of excited state intramolecular proton transfer (ESIPT) processes can be controlled by using those RTILs and SDS. Our study also reveals that the hindrance of nonradiative processes of curcumin, i.e., ESIPT is more pronounced in the case of RTIL containing a long alkyl chain compared to a small one. However, most interestingly the addition of long chain (dodecyl) anionic surfactant (SDS) promotes the ESIPT process of curcumin. We have also studied the effect of the addition of inorganic salt and compared the results with RTILs. The present work demonstrates an effort to decipher the photophysics of curcumin in zwitterionic micellar systems by monitoring its excited state dynamics.
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Affiliation(s)
- Chiranjib Banerjee
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
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Marks P, Cohen S, Levine M. Highly efficient quenching of nanoparticles for the detection of electron-deficient nitroaromatics. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26824] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Patrick Marks
- Department of Chemistry; University of Rhode Island; 51 Lower College Road Kingston Rhode Island 02881
| | - Sage Cohen
- South Kingstown High School; South Kingstown Rhode Island
| | - Mindy Levine
- Department of Chemistry; University of Rhode Island; 51 Lower College Road Kingston Rhode Island 02881
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Vayá I, Bonancía P, Jiménez MC, Markovitsi D, Gustavsson T, Miranda MA. Excited state interactions between flurbiprofen and tryptophan in drug–protein complexes and in model dyads. Fluorescence studies from the femtosecond to the nanosecond time domains. Phys Chem Chem Phys 2013; 15:4727-34. [DOI: 10.1039/c3cp43847c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bonancía P, Vayá I, Markovitsi D, Gustavsson T, Jiménez MC, Miranda MA. Stereodifferentiation in the intramolecular singlet excited state quenching of hydroxybiphenyl–tryptophan dyads. Org Biomol Chem 2013; 11:1958-63. [DOI: 10.1039/c3ob27278h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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