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Quenching of Protein Fluorescence by Fullerenol C 60(OH) 36 Nanoparticles. Int J Mol Sci 2022; 23:ijms232012382. [PMID: 36293241 PMCID: PMC9603995 DOI: 10.3390/ijms232012382] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 11/25/2022] Open
Abstract
The effect of the interaction between fullerenol C60(OH)36 (FUL) and alcohol dehydrogenase (ADH) from Saccharomyces cerevisiae and human serum albumin (HSA) was studied by absorption spectroscopy, fluorescence spectroscopy, and time-resolved fluorescence spectroscopy. As shown in the study, the fluorescence intensities of ADH and HSA at excitation wavelengths λex = 280 nm (Trp, Tyr) and λex = 295 nm (Trp) are decreased with the increase in the FUL concentration. The results of time-resolved measurements indicate that both quenching mechanisms, dynamic and static, are present. The binding constant Kb and the number of binding sites were obtained for HSA and ADH. Thus, the results indicated the formation of FUL complexes and proteins. However, the binding of FUL to HSA is much stronger than that of ADH. The transfer of energy from the protein to FUL was also proved.
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Tamarit L, El Ouardi M, Andreu I, Vayá I, Miranda MA. Photoprocesses of the tyrosine kinase inhibitor gefitinib: from femtoseconds to microseconds and from solution to cells. Chem Sci 2021; 12:12027-12035. [PMID: 34667568 PMCID: PMC8457384 DOI: 10.1039/d1sc03154f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/13/2021] [Indexed: 01/05/2023] Open
Abstract
Gefitinib (GFT) is a tyrosine kinase inhibitor currently used for the treatment of metastatic non-small cell lung cancer. Although it has been suggested that GFT can be phototoxic, there are no systematic studies on this issue. Here, the photosensitizing potential of GFT has been assessed by means of NRU assays and protein photooxidation. In addition, a thorough photophysical study is presented based on ultrafast transient absorption spectroscopy, fluorescence and laser flash photolysis. Transient species generated after excitation of GFT have been characterized in solution and in biological environments (i.e. HSA and HaCaT cells) to gain insight into the mechanisms involved in photodamage. The photobehavior of GFT was strongly medium-dependent. Excitation of the drug resulted in the formation of locally excited (LE) singlet states (1GFT*), which were found to be the main emissive species in non-polar solvents and also within HSA and HaCaT cells. By contrast, in polar solvents, LE states rapidly evolved (∼1 ps) towards the formation of longer-lived intramolecular charge transfer (ICT) states. The triplet excited state of GFT (3GFT*) can be formed through intersystem crossing from 1GFT* in non-polar solvents and from ICT states in the polar ones, or in the particular case of ethanol, by photosensitization using 2-methoxyacetophenone as an energy donor. In the HSA environment, 3GFT* was hardly detected due to quenching of its LE 1GFT* precursor by Trp through an electron transfer process. Accordingly, HSA photooxidation by GFT was demonstrated using the protein carbonylation method. In summary, a good correlation is established between the photophysical behavior and the photobiological properties of GFT, which provides a mechanistic basis for the observed phototoxicity. Excitation of gefitinib leads to the formation of locally excited (LE) and/or charge transfer (ICT) states in the ps scale. In solution, both can evolve to the excited triplet state. In proteins, quenching of LE by electron donors leads to oxidation.![]()
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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 .,Unidad Mixta de Investigación, Universitat Politècnica de València, Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe Avenida de Fernando Abril Martorell 106 46026 València 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 .,Unidad Mixta de Investigación, Universitat Politècnica de València, Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe Avenida de Fernando Abril Martorell 106 46026 València Spain
| | - Inmaculada Andreu
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València Camino de Vera s/n 46022 València Spain .,Unidad Mixta de Investigación, Universitat Politècnica de València, Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe Avenida de Fernando Abril Martorell 106 46026 València Spain
| | - Ignacio Vayá
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València Camino de Vera s/n 46022 València Spain .,Unidad Mixta de Investigación, Universitat Politècnica de València, Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe Avenida de Fernando Abril Martorell 106 46026 València 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 .,Unidad Mixta de Investigación, Universitat Politècnica de València, Instituto de Investigación Sanitaria (IIS) La Fe, Hospital Universitari i Politècnic La Fe Avenida de Fernando Abril Martorell 106 46026 València Spain
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3
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Amézqueta S, Beltrán JL, Bolioli AM, Campos-Vicens L, Luque FJ, Ràfols C. Evaluation of the Interactions between Human Serum Albumin (HSA) and Non-Steroidal Anti-Inflammatory (NSAIDs) Drugs by Multiwavelength Molecular Fluorescence, Structural and Computational Analysis. Pharmaceuticals (Basel) 2021; 14:ph14030214. [PMID: 33806467 PMCID: PMC8000696 DOI: 10.3390/ph14030214] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 01/18/2023] Open
Abstract
The interaction between drugs and transport proteins, such as albumins, is a key factor in drug bioavailability. One of the techniques commonly used for the evaluation of the drug-protein complex formation is fluorescence. This work studies the interaction of human serum albumin (HSA) with four non-steroidal anti-inflammatory drugs (NSAIDs)—ibuprofen, flurbiprofen, naproxen, and diflunisal—by monitoring the fluorescence quenching when the drug-albumin complex is formed. Two approaches—the double logarithm Stern-Volmer equation and the STAR program—are used to evaluate the binding parameters. The results are analyzed considering the binding properties, determined by using other complementary techniques and the available structural information of albumin complexes with NSAID-related compounds. Finally, this combined analysis has been synergistically used to interpret the binding of flurbiprofen to HSA.
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Affiliation(s)
- Susana Amézqueta
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; (J.L.B.); (A.M.B.); (C.R.)
- Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain;
- Correspondence: ; Tel.: +34-93-402-1277
| | - José Luís Beltrán
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; (J.L.B.); (A.M.B.); (C.R.)
| | - Anna Maria Bolioli
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; (J.L.B.); (A.M.B.); (C.R.)
| | - Lluís Campos-Vicens
- Department of Nutrition, Food Science and Gastronomy, Faculty of Pharmacy and Food Science, University of Barcelona, Prat de la Riba 171, 08921 Santa Coloma de Gramenet, Spain;
- Pharmacelera, Torre R, 4a planta, Despatx A05, Parc Científic de Barcelona, Baldiri Reixac 8, 08028 Barcelona, Spain
| | - Francisco Javier Luque
- Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain;
- Department of Nutrition, Food Science and Gastronomy, Faculty of Pharmacy and Food Science, University of Barcelona, Prat de la Riba 171, 08921 Santa Coloma de Gramenet, Spain;
- Institut of Theoretical and Computational Chemistry (IQTCUB), University of Barcelona, 08028 Barcelona, Spain
| | - Clara Ràfols
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; (J.L.B.); (A.M.B.); (C.R.)
- Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain;
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Vayá I, Andreu I, Lence E, González-Bello C, Consuelo Cuquerella M, Navarrete-Miguel M, Roca-Sanjuán D, Miranda MA. Characterization of Locally Excited and Charge-Transfer States of the Anticancer Drug Lapatinib by Ultrafast Spectroscopy and Computational Studies. Chemistry 2020; 26:15922-15930. [PMID: 32585059 DOI: 10.1002/chem.202001336] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Indexed: 12/24/2022]
Abstract
Lapatinib (LAP) is an anticancer drug, which is metabolized to the N- and O-dealkylated products (N-LAP and O-LAP, respectively). In view of the photosensitizing potential of related drugs, a complete experimental and theoretical study has been performed on LAP, N-LAP and O-LAP, both in solution and upon complexation with human serum albumin (HSA). In organic solvents, coplanar locally excited (LE) emissive states are generated; they rapidly evolve towards twisted intramolecular charge-transfer (ICT) states. By contrast, within HSA only LE states are detected. Accordingly, femtosecond transient absorption reveals a very fast switching (ca. 2 ps) from LE (λmax =550 nm) to ICT states (λmax =480 nm) in solution, whereas within HSA the LE species become stabilized and live much longer (up to the ns scale). Interestingly, molecular dynamics simulation studies confirm that the coplanar orientation is preferred for LAP (or to a lesser extent N-LAP) within HSA, explaining the experimental results.
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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, València, Spain.,Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS), La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Inmaculada Andreu
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain.,Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS), 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
| | - 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
| | - M Consuelo Cuquerella
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain.,Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS), La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Miriam Navarrete-Miguel
- 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
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain.,Unidad Mixta de Investigación UPV-Instituto de Investigación Sanitaria (IIS), La Fe, Hospital Universitari i Politècnic La Fe, Avenida de Fernando Abril Martorell 106, 46026, Valencia, Spain
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Maffeis V, Mavreas K, Monti F, Mamais M, Gustavsson T, Chrysina ED, Markovitsi D, Gimisis T, Venturini A. Multiscale time-resolved fluorescence study of a glycogen phosphorylase inhibitor combined with quantum chemistry calculations. Phys Chem Chem Phys 2019; 21:7685-7696. [PMID: 30912774 DOI: 10.1039/c8cp07538g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A fluorescence study of N1-(β-d-glucopyranosyl)-N4-[2-acridin-9(10H)-onyl]-cytosine (GLAC), the first fluorescent potent inhibitor of glycogen phosphorylase (GP), in neutral aqueous solution, is presented herein. Quantum chemistry (TD-DFT) calculations show the existence of several conformers both in the ground and first excited states. They result from rotations of the acridone and cytosine moieties around an NH bridge which may lead to the formation of non-emitting charge-transfer states. The fingerprints of various conformers have been detected by time-resolved fluorescence spectroscopy (fluorescence upconversion and time-correlated single photon counting) and identified using as criteria their energy, polarization and relative population resulting from computations. Such an analysis should contribute to the design of new GP inhibitors with better fluorescence properties, suitable for imaging applications.
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Affiliation(s)
- Valentin Maffeis
- LIDYL, CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France.
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Pinheiro S, Curutchet C. Can Förster Theory Describe Stereoselective Energy Transfer Dynamics in a Protein-Ligand Complex? J Phys Chem B 2017; 121:2265-2278. [PMID: 28235382 DOI: 10.1021/acs.jpcb.7b00217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Förster resonance energy transfer (FRET) reactions involving ligands and aromatic amino acids can substantially impact the fluorescence properties of a protein-ligand complex, an impact intimately related to the corresponding binding mode. Structural characterization of such binding events in terms of intermolecular distances can be done through the well-known R-6 distance-dependent Förster rate expression. However, such an interpretation suffers from uncertainties underlying Förster theory in the description of the electronic coupling that promotes FRET, mostly related to the dipole-dipole orientation factor, dielectric screening effects, and deviations from the ideal dipole approximation. Here, we investigate how Förster approximations impact the prediction of energy transfer dynamics in the complex between flurbiprofen (FBP) and human serum albumin (HSA), as well as a model FBP-Trp dyad, in which recent observation of enantioselective fluorescence quenching has been ascribed to energy transfer from FBP to Trp. To this end, we combine classical molecular dynamics simulations with polarizable quantum mechanics/molecular mechanics calculations that allow overcoming Förster approximations. On the basis of our results, we discuss the potential of structure-based simulations in the characterization of drug-binding events through fluorescence techniques. Overall, we find an excellent agreement between theory and experiment both in terms of enantioselectivity and FRET times, thus strongly supporting the reliability of the binding modes proposed for the (S) and (R) enantiomers of FBP. In particular, we show that the dynamic quenching arises from a small fraction of drug bound to the secondary site of HSA at the interface between subdomains IIA and IIB, whereas the enantioselectivity arises from the larger flexibility of the (S)-FBP enantiomer in the binding pocket.
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Affiliation(s)
- Silvana Pinheiro
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica and Institut de Biomedicina (IBUB), Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona , Av. Joan XXIII s/n, Barcelona 08028, Spain
| | - Carles Curutchet
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica and Institut de Biomedicina (IBUB), Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona , Av. Joan XXIII s/n, Barcelona 08028, Spain
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7
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Chakraborty B, Sengupta C, Pal U, Basu S. Acridone in a biological nanocavity: detailed spectroscopic and docking analyses of probing both the tryptophan residues of bovine serum albumin. NEW J CHEM 2017. [DOI: 10.1039/c7nj02454a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AD initially gets hooked to Trp 212 housed in domain IIA, inducing conformational changes in the protein and paving the way for the ligand to reach Trp 134 located in domain IB.
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Affiliation(s)
| | | | - Uttam Pal
- Chemical Sciences Division
- Saha Institute of Nuclear Physics
- Kolkata
- India
| | - Samita Basu
- Chemical Sciences Division
- Saha Institute of Nuclear Physics
- Kolkata
- India
- Homi Bhaba National Institute
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8
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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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9
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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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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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11
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Vayá I, Andreu I, Jiménez MC, Miranda MA. Photooxygenation mechanisms in naproxen–amino acid linked systems. Photochem Photobiol Sci 2014; 13:224-30. [DOI: 10.1039/c3pp50252j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Jayaram DT, Shankar BH, Ramaiah D. Photomorphogenesis of γ-globulin: effect on sequential ordering and knock out of gold nanoparticles array. RSC Adv 2013. [DOI: 10.1039/c3ra41844h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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