1
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Veclani D, Tolazzi M, Cerón-Carrasco JP, Melchior A. Intercalation Ability of Novel Monofunctional Platinum Anticancer Drugs: A Key Step in Their Biological Action. J Chem Inf Model 2021; 61:4391-4399. [PMID: 34156233 PMCID: PMC8479807 DOI: 10.1021/acs.jcim.1c00430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
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Phenanthriplatin
(PtPPH) is a monovalent platinum(II)-based complex
with a large cytotoxicity against cancer cells. Although the aqua-activated
drug has been assumed to be the precursor for DNA damage, it is still
under debate whether the way in which that metallodrug attacks to
DNA is dominated by a direct binding to a guanine base or rather by
an intercalated intermediate product. Aiming to capture the mechanism
of action of PtPPH, the present contribution used theoretical tools
to systematically assess the sequence of all possible mechanisms on
drug activation and reactivity, for example, hydrolysis, intercalation,
and covalent damage to DNA. Ab initio quantum mechanical
(QM) methods, hybrid QM/QM′ schemes, and independent gradient
model approaches are implemented in an unbiased protocol. The performed
simulations show that the cascade of reactions is articulated in three
well-defined stages: (i) an early and fast intercalation of the complex
between the DNA bases, (ii) a subsequent hydrolysis reaction that
leads to the aqua-activated form, and (iii) a final formation of the
covalent bond between PtPPH and DNA at a guanine site. The permanent
damage to DNA is consequently driven by that latter bond to DNA but
with a simultaneous π–π intercalation of the phenanthridine
into nucleobases. The impact of the DNA sequence and the lateral backbone
was also discussed to provide a more complete picture of the forces
that anchor the drug into the double helix.
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Affiliation(s)
- Daniele Veclani
- Dipartimento Politecnico di Ingegneria e Architettura (DPIA), Laboratori di Chimica, Università di Udine, via delle Scienze 99, 33100 Udine, Italy
| | - Marilena Tolazzi
- Dipartimento Politecnico di Ingegneria e Architettura (DPIA), Laboratori di Chimica, Università di Udine, via delle Scienze 99, 33100 Udine, Italy
| | - José P Cerón-Carrasco
- Reconocimiento y Encapsulación Molecular, Universidad Católica San Antonio de Murcia (UCAM). Campus de los Jerónimos, 30107 Murcia, Spain
| | - Andrea Melchior
- Dipartimento Politecnico di Ingegneria e Architettura (DPIA), Laboratori di Chimica, Università di Udine, via delle Scienze 99, 33100 Udine, Italy
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2
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Marazzi M, Gattuso H, Fumanal M, Daniel C, Monari A. Charge-Transfer versus Charge-Separated Triplet Excited States of [Re I (dmp)(CO) 3 (His124)(Trp122)] + in Water and in Modified Pseudomonas aeruginosa Azurin Protein. Chemistry 2019; 25:2519-2526. [PMID: 30379366 DOI: 10.1002/chem.201803685] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/17/2018] [Indexed: 12/20/2022]
Abstract
A computational investigation of the triplet excited states of a rhenium complex electronically coupled with a tryptophan side chain and bound to an azurin protein is presented. In particular, by using high-level molecular modeling, evidence is provided for how the electronic properties of the excited-state manifolds strongly depend on coupling with the environment. Indeed, only upon explicitly taking into account the protein environment can two stable triplet states of metal-to-ligand charge transfer or charge-separated nature be recovered. In addition, it is also demonstrated how the rhenium complex plus tryptophan system in an aqueous environment experiences too much flexibility, which prevents the two chromophores from being electronically coupled. This occurrence disables the formation of a charge-separated state. The successful strategy requires a multiscale approach of combining molecular dynamics and quantum chemistry. In this context, the strategy used to parameterize the force fields for the electronic triplet states of the metal complex is also presented.
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Affiliation(s)
- Marco Marazzi
- Université de Lorraine, CNRS, LPCT UMR 7019, Boulevard des Aiguillettes, Vandoeuvre-lès-Nancy, 54000, Nancy, France.,Departamento de Química, Centro de Investigacíon en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006, Logroño, Spain
| | - Hugo Gattuso
- Université de Lorraine, CNRS, LPCT UMR 7019, Boulevard des Aiguillettes, Vandoeuvre-lès-Nancy, 54000, Nancy, France
| | - Maria Fumanal
- Laboratoire de Chimie Quantique, Institut de Chimie Strasbourg, UMR-7177, CNRS/Université de Strasbourg, 1 Rue Blaise Pascal BP 296/R8, 67008, Strasbourg, France
| | - Chantal Daniel
- Laboratoire de Chimie Quantique, Institut de Chimie Strasbourg, UMR-7177, CNRS/Université de Strasbourg, 1 Rue Blaise Pascal BP 296/R8, 67008, Strasbourg, France
| | - Antonio Monari
- Université de Lorraine, CNRS, LPCT UMR 7019, Boulevard des Aiguillettes, Vandoeuvre-lès-Nancy, 54000, Nancy, France
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3
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Palepu NR, Richard Premkumar J, Verma AK, Bhattacharjee K, Joshi S, Forbes S, Mozharivskyj Y, Mohan Rao K. Antibacterial, in vitro antitumor activity and structural studies of rhodium and iridium complexes featuring the two positional isomers of pyridine carbaldehyde picolinic hydrazone ligand. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2015.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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4
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Marazzi M, Gattuso H, Monari A, Assfeld X. Steady-State Linear and Non-linear Optical Spectroscopy of Organic Chromophores and Bio-macromolecules. Front Chem 2018; 6:86. [PMID: 29666792 PMCID: PMC5891624 DOI: 10.3389/fchem.2018.00086] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/12/2018] [Indexed: 01/05/2023] Open
Abstract
Bio-macromolecules as DNA, lipid membranes and (poly)peptides are essential compounds at the core of biological systems. The development of techniques and methodologies for their characterization is therefore necessary and of utmost interest, even though difficulties can be experienced due to their intrinsic complex nature. Among these methods, spectroscopies, relying on optical properties are especially important to determine their macromolecular structures and behaviors, as well as the possible interactions and reactivity with external dyes—often drugs or pollutants—that can (photo)sensitize the bio-macromolecule leading to eventual chemical modifications, thus damages. In this review, we will focus on the theoretical simulation of electronic spectroscopies of bio-macromolecules, considering their secondary structure and including their interaction with different kind of (photo)sensitizers. Namely, absorption, emission and electronic circular dichroism (CD) spectra are calculated and compared with the available experimental data. Non-linear properties will be also taken into account by two-photon absorption, a highly promising technique (i) to enhance absorption in the red and infra-red windows and (ii) to enhance spatial resolution. Methodologically, the implications of using implicit and explicit solvent, coupled to quantum and thermal samplings of the phase space, will be addressed. Especially, hybrid quantum mechanics/molecular mechanics (QM/MM) methods are explored for a comparison with solely QM methods, in order to address the necessity to consider an accurate description of environmental effects on spectroscopic properties of biological systems.
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Affiliation(s)
- Marco Marazzi
- Laboratoire de Physique et Chimie Théoriques, Université de Lorraine-Nancy, UMR 7019, Vandoeuvre-lés-Nancy, France.,Laboratoire de Physique et Chimie Théoriques, Centre National de la Recherche Scientifique, UMR 7019, Vandoeuvre-lès-Nancy, France.,Departamento de Química, Centro de Investigacíon en Síntesis Química (CISQ), Universidad de La Rioja, Logroño, Spain
| | - Hugo Gattuso
- Laboratoire de Physique et Chimie Théoriques, Université de Lorraine-Nancy, UMR 7019, Vandoeuvre-lés-Nancy, France.,Laboratoire de Physique et Chimie Théoriques, Centre National de la Recherche Scientifique, UMR 7019, Vandoeuvre-lès-Nancy, France
| | - Antonio Monari
- Laboratoire de Physique et Chimie Théoriques, Université de Lorraine-Nancy, UMR 7019, Vandoeuvre-lés-Nancy, France.,Laboratoire de Physique et Chimie Théoriques, Centre National de la Recherche Scientifique, UMR 7019, Vandoeuvre-lès-Nancy, France
| | - Xavier Assfeld
- Laboratoire de Physique et Chimie Théoriques, Université de Lorraine-Nancy, UMR 7019, Vandoeuvre-lés-Nancy, France.,Laboratoire de Physique et Chimie Théoriques, Centre National de la Recherche Scientifique, UMR 7019, Vandoeuvre-lès-Nancy, France
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5
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Morzan UN, Alonso de Armiño DJ, Foglia NO, Ramírez F, González Lebrero MC, Scherlis DA, Estrin DA. Spectroscopy in Complex Environments from QM–MM Simulations. Chem Rev 2018; 118:4071-4113. [DOI: 10.1021/acs.chemrev.8b00026] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Uriel N. Morzan
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Diego J. Alonso de Armiño
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Nicolás O. Foglia
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Francisco Ramírez
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Mariano C. González Lebrero
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Damián A. Scherlis
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Darío A. Estrin
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
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6
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Synthesis and structural studies of half-sandwich Cp* rhodium and Cp* iridium complexes featuring mono, bi and tetradentate nitrogen and oxygen donor ligands. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1270-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Czapla-Masztafiak J, Nogueira JJ, Lipiec E, Kwiatek WM, Wood BR, Deacon GB, Kayser Y, Fernandes DLA, Pavliuk MV, Szlachetko J, González L, Sá J. Direct Determination of Metal Complexes' Interaction with DNA by Atomic Telemetry and Multiscale Molecular Dynamics. J Phys Chem Lett 2017; 8:805-811. [PMID: 28151686 DOI: 10.1021/acs.jpclett.7b00070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The lack of molecular mechanistic understanding of the interaction between metal complexes and biomolecules hampers their potential medical use. Herein we present a robust procedure combining resonant X-ray emission spectroscopy and multiscale molecular dynamics simulations, which allows for straightforward elucidation of the precise interaction mechanism at the atomic level. The report unveils an unforeseen hydrolysis process and DNA binding of [Pt{N(p-HC6F4)CH2}2py2] (Pt103), which showed potential cytotoxic activity in the past. Pt103 preferentially coordinates to adjacent adenine sites, instead of guanine sites as in cisplatin, because of its hydrogen bond ability. Comparison with previous research on cisplatin suggests that selective binding to guanine or adenine may be achieved by controlling the acidity of the compound.
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Affiliation(s)
- Joanna Czapla-Masztafiak
- Institute of Nuclear Physics, Polish Academy of Sciences , PL-31342 Krakow, Poland
- Paul Scherrer Institute (PSI) , 5232 Villigen, Switzerland
| | - Juan J Nogueira
- University of Vienna , Faculty of Chemistry, Institute of Theoretical Chemistry, Währinger Str. 17, A-1090 Vienna, Austria
| | - Ewelina Lipiec
- Institute of Nuclear Physics, Polish Academy of Sciences , PL-31342 Krakow, Poland
- ETH Zurich , Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
| | - Wojciech M Kwiatek
- Institute of Nuclear Physics, Polish Academy of Sciences , PL-31342 Krakow, Poland
| | - Bayden R Wood
- Centre for Biospectroscopy, School of Chemistry, Monash University , 3800 Victoria, Australia
| | - Glen B Deacon
- School of Chemistry, Faculty of Science, Monash University , 3800 Victoria, Australia
| | - Yves Kayser
- Paul Scherrer Institute (PSI) , 5232 Villigen, Switzerland
| | - Daniel L A Fernandes
- Department of Chemistry-Ånsgtröm Laboratory, Uppsala University , 751 20 Uppsala, Sweden
| | - Mariia V Pavliuk
- Department of Chemistry-Ånsgtröm Laboratory, Uppsala University , 751 20 Uppsala, Sweden
| | - Jakub Szlachetko
- Paul Scherrer Institute (PSI) , 5232 Villigen, Switzerland
- Institute of Physics, Jan Kochanowski University in Kielce , Świętokrzyska 15 St., 25-406 Kielce, Poland
| | - Leticia González
- University of Vienna , Faculty of Chemistry, Institute of Theoretical Chemistry, Währinger Str. 17, A-1090 Vienna, Austria
| | - Jacinto Sá
- Department of Chemistry-Ånsgtröm Laboratory, Uppsala University , 751 20 Uppsala, Sweden
- Institute of Physical Chemistry, Polish Academy of Sciences , ul. Kasprzaka 44/52, 01-224 Warsaw, Poland
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8
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Palepu NR, Kaminsky W, Kollipara MR. Synthesis and Structural Studies of Cp* Rhodium and Cp* Iridium Complexes of Picolinic Hydrazine Ligand. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Narasinga Rao Palepu
- Centre for Advanced Studies in Chemistry; North-Eastern Hill University; Shillong 793 022 India
| | - Werner Kaminsky
- Department of Chemistry; University of Washington; Seattle WA 98195 USA
| | - Mohan Rao Kollipara
- Centre for Advanced Studies in Chemistry; North-Eastern Hill University; Shillong 793 022 India
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9
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Rico Bautista H, Saavedra Díaz RO, Shen LQ, Orvain C, Gaiddon C, Le Lagadec R, Ryabov AD. Impact of cyclometalated ruthenium(II) complexes on lactate dehydrogenase activity and cytotoxicity in gastric and colon cancer cells. J Inorg Biochem 2016; 163:28-38. [PMID: 27513948 DOI: 10.1016/j.jinorgbio.2016.07.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 07/11/2016] [Accepted: 07/25/2016] [Indexed: 11/15/2022]
Abstract
Lactate dehydrogenase (LDH) is a redox enzyme often overexpressed in cancer cells allowing their survival in stressful metabolic tumor environment. Ruthenium(II) complexes have been shown to impact on the activity of purified horseradish peroxidase and glucose oxidase but the physiological relevance remains unclear. In this study we investigated how ruthenium complexes impact on the activity of LDH in vitro and in cancer cells and performed a comparative study using polypyridine ruthenium(II) complex [Ru(bpy)3]2+ (1) and its structurally related cyclometalated 2-phenylpyridinato counterpart [Ru(phpy)(bpy)2]+ (2) (bpy=2,2'-bipyridine, phpyH=2-phenylpyridine). We show that the cytotoxicity in gastric and colon cancer cells induced by 2 is significantly higher compared to 1. The kinetic inhibition mechanisms on purified LDH and the corresponding inhibition constants Ki or i0.5 values were calculated. Though complexes 1 and 2 are structurally very similar (one Ru-C bond in 2 replaces one Ru-N bond in 1), their inhibition modes are different. Cyclometalated complex 2 behaves exclusively as a non-competitive inhibitor of LDH from rabbit muscle (LDHrm), strongly suggesting that 2 does not interact with LDH in the vicinities of either lactate/pyruvate or NAD+/NADH binding sites. Sites of interaction of 1 and 2 with LDHrm were revealed theoretically through computational molecular docking. Inhibition of LDH activity by 2 was confirmed in cancer cells. Altogether, these results revealed an inhibition of LDH activity by ruthenium complex through a direct interaction structurally tuned by a Ru-C bond.
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Affiliation(s)
- Hugo Rico Bautista
- Instituto de Química UNAM, Circuito Exterior s/n, Ciudad Universitaria, 04510 México D.F., Mexico
| | | | - Longzhu Q Shen
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Christophe Orvain
- INSERM U1113, Strasbourg University, FMTS, 3 Avenue Molière, 67200 Strasbourg, France; Oncology Section, FMTS, Strasbourg University, Strasbourg, France
| | - Christian Gaiddon
- INSERM U1113, Strasbourg University, FMTS, 3 Avenue Molière, 67200 Strasbourg, France; Oncology Section, FMTS, Strasbourg University, Strasbourg, France
| | - Ronan Le Lagadec
- Instituto de Química UNAM, Circuito Exterior s/n, Ciudad Universitaria, 04510 México D.F., Mexico.
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
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10
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Gattuso H, Duchanois T, Besancenot V, Barbieux C, Assfeld X, Becuwe P, Gros PC, Grandemange S, Monari A. Interaction of Iron II Complexes with B-DNA. Insights from Molecular Modeling, Spectroscopy, and Cellular Biology. Front Chem 2015; 3:67. [PMID: 26734600 PMCID: PMC4683171 DOI: 10.3389/fchem.2015.00067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 11/25/2015] [Indexed: 11/13/2022] Open
Abstract
We report the characterization of the interaction between B-DNA and three terpyridin iron II complexes. Relatively long time-scale molecular dynamics (MD) is used in order to characterize the stable interaction modes. By means of molecular modeling and UV-vis spectroscopy, we prove that they may lead to stable interactions with the DNA duplex. Furthermore, the presence of larger π-conjugated moieties also leads to the appearance of intercalation binding mode. Non-covalent stabilizing interactions between the iron complexes and the DNA are also characterized and evidenced by the analysis of the gradient of the electronic density. Finally, the structural deformations induced on the DNA in the different binding modes are also evidenced. The synthesis and chemical characterization of the three complexes is reported, as well as their absorption spectra in presence of DNA duplexes to prove the interaction with DNA. Finally, their effects on human cell cultures have also been evidenced to further enlighten their biological effects.
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Affiliation(s)
- Hugo Gattuso
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
| | - Thibaut Duchanois
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Hécrin, SRSMCNancy, France
| | - Vanessa Besancenot
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Claire Barbieux
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Xavier Assfeld
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
| | - Philippe Becuwe
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Philippe C. Gros
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Hécrin, SRSMCNancy, France
| | - Stephanie Grandemange
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Antonio Monari
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
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11
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Cerón-Carrasco JP, Jacquemin D. Photoactivatable platinum(II) compounds: in search of novel anticancer drugs. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1724-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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12
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Gil A, Melle-Franco M, Branchadell V, Calhorda MJ. How the Intercalation of Phenanthroline Affects the Structure, Energetics, and Bond Properties of DNA Base Pairs: Theoretical Study Applied to Adenine–Thymine and Guanine–Cytosine Tetramers. J Chem Theory Comput 2015; 11:2714-28. [DOI: 10.1021/ct5006104] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Adrià Gil
- Centro
de Química e Bioquímica, DQB, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | | | - Vicenç Branchadell
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Maria José Calhorda
- Centro
de Química e Bioquímica, DQB, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
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13
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Rivail JL, Monari A, Assfeld X. The Non Empirical Local Self Consistent Field Method: Application to Quantum Mechanics/Molecular Mechanics (QM/MM) Modeling of Large Biomolecular Systems. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2015. [DOI: 10.1007/978-3-319-21626-3_13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Huang H, Zhang P, Yu B, Chen Y, Wang J, Ji L, Chao H. Targeting Nucleus DNA with a Cyclometalated Dipyridophenazineruthenium(II) Complex. J Med Chem 2014; 57:8971-83. [DOI: 10.1021/jm501095r] [Citation(s) in RCA: 187] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Huaiyi Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Pingyu Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Bole Yu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yu Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jinquan Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Liangnian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
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15
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Véry T, Ambrosek D, Otsuka M, Gourlaouen C, Assfeld X, Monari A, Daniel C. Photophysical properties of ruthenium(II) polypyridyl DNA intercalators: effects of the molecular surroundings investigated by theory. Chemistry 2014; 20:12901-9. [PMID: 25145959 DOI: 10.1002/chem.201402963] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Indexed: 11/11/2022]
Abstract
The environmental effects on the structural and photophysical properties of [Ru(L)2 (dppz)](2+) complexes (L=bpy=2,2'-bipyridine, phen=1,10-phenanthroline, tap=1,4,5,8-tetraazaphenanthrene; dppz=dipyrido[3,3-a:2',3'-c]phenazine), used as DNA intercalators, have been studied by means of DFT, time-dependent DFT, and quantum mechanics/molecular mechanics calculations. The electronic characteristics of the low-lying triplet excited states in water, acetonitrile, and DNA have been investigated to decipher the influence of the environment on the luminescent behavior of this class of molecules. The lowest triplet intra-ligand (IL) excited state calculated at λ≈800 nm for the three complexes and localized on the dppz ligand is not very sensitive to the environment and is available for electron transfer from a guanine nucleobase. Whereas the lowest triplet metal-to-ligand charge-transfer ((3)MLCT) states remain localized on the ancillary ligand (tap) in [Ru(tap)2 (dppz)](2+), regardless of the environment, their character is drastically modified in the other complexes [Ru(phen)2 (dppz)](2+) and [Ru(bpy)2 (dppz)](2+) upon going from acetonitrile (MLCTdppz/phen or MLCTdppz/bpy) to water (MLCTdppz) and DNA (MLCTphen and MLCTbpy). The change in the character of the low-lying (3) MLCT states accompanying nuclear relaxation in the excited state controls the emissive properties of the complexes in water, acetonitrile, and DNA. The light-switching effect has been rationalized on the basis of environment-induced control of the electronic density distributed in the lowest triplet excited states.
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Affiliation(s)
- Thibaut Véry
- Université de Lorraine-Nancy, Théorie-Simulation-Modélisation, SRSMC, Boulevard des Aiguillettes, 54506, Vandoeuvre-lès-Nancy (France)
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QM/MM modeling of Harmane cation fluorescence spectrum in water solution and interacting with DNA. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.03.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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