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Velo-Gala I, Barceló-Oliver M, Gil DM, González-Pérez JM, Castiñeiras A, Domínguez-Martín A. Deciphering the H-Bonding Preference on Nucleoside Molecular Recognition through Model Copper(II) Compounds. Pharmaceuticals (Basel) 2021; 14:ph14030244. [PMID: 33803177 PMCID: PMC7998196 DOI: 10.3390/ph14030244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 12/31/2022] Open
Abstract
The synthetic nucleoside acyclovir is considered an outstanding model of the natural nucleoside guanosine. With the purpose of deepening on the influence and nature of non-covalent interactions regarding molecular recognition patterns, three novel Cu(II) complexes, involving acyclovir (acv) and the ligand receptor N-(2-hydroxyethyl)ethylenediamine (hen), have been synthesized and thoroughly characterized. The three novel compounds introduce none, one or two acyclovir molecules, respectively. Molecular recognition has been evaluated using single crystal X-ray diffraction. Furthermore, theoretical calculations and other physical methods such as thermogravimetric analysis, infrared and UV-Vis spectroscopy, electron paramagnetic resonance and magnetic measurements have been used. Theoretical calculations are in line with experimental results, supporting the relevance of the [metal-N7(acv) + H-bond] molecular recognition pattern. It was also shown that (hen)O-H group is used as preferred H-donor when it is found within the basal coordination plane, since the higher polarity of the terminal (hen)O-H versus the N-H group favours its implication. Otherwise, when (hen)O-H occupies the distal coordination site, (hen)N-H groups can take over.
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Affiliation(s)
- Inmaculada Velo-Gala
- Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
| | - Miquel Barceló-Oliver
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca, Spain;
| | - Diego M. Gil
- Instituto de Biotecnología Farmaceútica y Alimentaria, Consejo Nacional de Investigaciones Científicas y Técnicas—Universidad Nacional de Tucumán, Instituto de Química Orgánica, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, San Miguel de Tucumán T4000INI, Argentina;
| | - Josefa M. González-Pérez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
- Correspondence:
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Ruiz-González N, García-Rubiño ME, Domínguez-Martín A, Choquesillo-Lazarte D, Franconetti A, Frontera A, Castiñeiras A, González-Pérez JM, Niclós-Gutiérrez J. Molecular and supramolecular recognition patterns in ternary copper(II) or zinc(II) complexes with selected rigid-planar chelators and a synthetic adenine-nucleoside. J Inorg Biochem 2019; 203:110920. [PMID: 31760232 DOI: 10.1016/j.jinorgbio.2019.110920] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 11/25/2022]
Abstract
Four ternary metal-complexes with Cu(II) or Zn(II), 2,6-pyridine-dicarboxylate (pdc) or glycyl-glycinate (GG) and the synthetic nucleoside 9-(2-hydroxyethyl)adenine (9heade) have been synthesized and studied by single-crystal X-ray diffraction and other physical methods. Relevant supramolecular assemblies found in the solid state structures have been further studied using density functional theory (DFT) calculations. In addition, the energetic features of the non-covalent interactions as well as the cooperativity effects have been calculated and characterized using the non-covalent interaction plot computational tool. Compounds trans-[Cu(pdc)(9heade)(H2O)2]·3H2O (1a) and [Cu(pdc)(9heade)(H2O)]·H2O (1b), trans-[Zn(pdc)(9heade)(H2O)2] (2), share the same molecular recognition pattern consisting in the cooperation of the metal-N7(9heade) bond and an interligand (9heade)N6-H···O(pdc) interaction, regardless of the nature of the metal, the coordination environment and the water content. At a supramolecular level, these compounds exhibit pairs of complex molecules linked by H-bonds and interesting anion-π/π-π/π-anion assemblies (in 1a and 1b) or the unprecedented π-π interactions (in 2), involving the purine moieties or the exocyclic -6NH2 purine groups, respectively. Compound 3, {[Cu(GG)(9heade)(H2O)·Cu(GG)(μ2-9heade)]·8H2O}n, consists in asymmetric dinuclear complex units (Cu···Cu 7.83 Å) that connect with adjacent ones by pairs of very weak Cu-O(carboxylate) bonds (Cu···Cu 3.81 Å) building a polymeric chain. The supramolecular transition from a single molecule to dinuclear units and finally a polymeric chain is also observed in the electron paramagnetic resonance spectra and discussed from a structural point of view as well as by DFT calculations. The unprecedented N7 and μ-N7,O(ol) metal binding patterns of 9heade differs from that recently reported (μ-N1,N7) in a Cd(II) polymer.
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Affiliation(s)
- Noelia Ruiz-González
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - M Eugenia García-Rubiño
- Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - Antonio Franconetti
- Department of Chemistry, Faculty of Chemical Science, University of Balearic Island, E-07112 Palma, Mallorca, Spain
| | - Antonio Frontera
- Department of Chemistry, Faculty of Chemical Science, University of Balearic Island, E-07112 Palma, Mallorca, Spain
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Josefa M González-Pérez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada, Spain.
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Pérez-Toro I, Domínguez-Martín A, Choquesillo-Lazarte D, García-Rubiño ME, González-Pérez JM, Castiñeiras A, Bauzá A, Frontera A, Niclós-Gutiérrez J. Copper(II) polyamine chelates as efficient receptors for acyclovir: syntheses, crystal structures and dft study. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ranasinghe K, Pakhomova S, Marzilli PA, Marzilli LG. A Very Rare Example of a Structurally Characterized 3'-GMP Metal Complex. NMR and Synthetic Assessment of Adducts Formed by Guanine Derivatives with [Pt(L tri)Cl]Cl Complexes with an N,N',N″ Tridentate Ligand (L tri) Terminated by Imidazole Rings. Inorg Chem 2017; 56:8462-8477. [PMID: 28682064 DOI: 10.1021/acs.inorgchem.7b01176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Pt(N(R)-1,1'-Me2dma)Cl]Cl complexes with tridentate ligands (bis(1-methyl-2-methylimidazolyl)amine, R = H; N-(methyl)bis(1-methyl-2-methylimidazolyl)amine, R = Me) were prepared in order to investigate Pt(N(R)-1,1'-Me2dma)G adducts (G = monodentate N9-substituted guanine or hypoxanthine derivative). Solution NMR spectroscopy is the primary tool for studying metal complexes of nucleosides and nucleotides because such adducts rarely crystallize. However, [Pt(N(H)-1,1'-Me2dma)(3'-GMPH)]NO3·5H2O (5) was crystallized, allowing, to our knowledge, the first crystallographic molecular structure determination for a 3'-GMP platinum complex. The structure is one of only a very few structures of a 3'-GMP complex with any metal. Complex 5 has the syn rotamer conformation, with 3'-GMP bound by N7. All Pt(N(R)-1,1'-Me2dma)G adducts exhibit two new downfield-shifted G H8 signals, consistent with G bound to platinum by N7 and a syn/anti rotamer mixture. Anticancer-active monofunctional platinum(II) complexes have bulky carrier ligands that cause DNA adducts to be distorted. Hence, understanding carrier-ligand steric effects is key in designing new platinum drugs. Ligand bulk can be correlated with the degree of impeded rotation of the G nucleobase about the Pt-N7 bond, as assessed by the observation of rotamers. The signals of syn and anti rotamers are connected by EXSY cross-peaks in 2D ROESY spectra of Pt(N(H)-1,1'-Me2dma)G adducts but not in spectra of Pt(N(H)dpa)G adducts (N(H)dpa = bis(2-picolyl)amine), indicating that rotamer interchange is more facile and carrier-ligand bulk is lower in Pt(N(H)-1,1'-Me2dma)G than in Pt(N(H)dpa)G adducts. The lower steric hindrance is a direct consequence of the greater distance of the G nucleobase from the H4/4' protons in the N(R)-1,1'-Me2dma carrier ligand in comparison to that from the H6/6' protons in the N(H)dpa carrier ligand. Although in 5 the nucleotide is 3'-GMP (not the usual 5'-GMP) and the N(H)-1,1'-Me2dma carrier ligand is very different from those typically present in structurally characterized Pt(II) G complexes, the rocking and canting angles in 5 adhere to long-recognized trends.
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Affiliation(s)
- Kokila Ranasinghe
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Svetlana Pakhomova
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Patricia A Marzilli
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Luigi G Marzilli
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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González-Pérez JM, Choquesillo-Lazarte D, Domínguez-Martín A, Vílchez-Rodríguez E, Pérez-Toro I, Castiñeiras A, Arriortua OK, García-Rubiño ME, Matilla-Hernández A, Niclós-Gutiérrez J. Metal binding pattern of acyclovir in ternary copper(II) complexes having an S-thioether or S-disulfide NO2S-tripodal tetradentate chelator. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Stereospecific intra-molecular interligand interactions affecting base-specific metal bonding to purine nucleobases in the solid state. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Brandi-Blanco MDP, Choquesillo-Lazarte D, Domínguez-Martín A, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Metal ion binding patterns of acyclovir: Molecular recognition between this antiviral agent and copper(II) chelates with iminodiacetate or glycylglycinate. J Inorg Biochem 2011; 105:616-23. [DOI: 10.1016/j.jinorgbio.2011.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/02/2011] [Accepted: 02/03/2011] [Indexed: 11/29/2022]
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8
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Bogojeski J, Bugarčić ŽD, Puchta R, van Eldik R. Kinetic Studies on the Reactions of Different Bifunctional Platinum(II) Complexes with Selected Nucleophiles. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000654] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Intini FP, Cini R, Tamasi G, Hursthouse MB, Marzilli LG, Natile G. X-Ray Structural Characterization of the Bis-Guanine Derivative of a Cisplatin Analogue Having Just One Proton on Each Coordinated Nitrogen and a Head-to-Head Conformation: [Pt{(±)-N,N′-Dimethyl-2,3-diaminobutane}(9-ethyl-guanine)2]dinitrate. Inorg Chem 2010; 49:7853-60. [DOI: 10.1021/ic100972s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francesco P. Intini
- Dipartimento Farmaco-Chimico, Università di Bari, Via E. Orabona 4, 70125 Bari, Italy
| | - Renzo Cini
- Dipartimento di Chimica, Università di Siena, Via A. Moro 2, I-53100 Siena, Italy
| | - Gabriella Tamasi
- Dipartimento di Chimica, Università di Siena, Via A. Moro 2, I-53100 Siena, Italy
| | - Michael B. Hursthouse
- School of Chemistry, University of Southampton, Southampton, SO17 1BJ, United Kingdom
| | - Luigi G. Marzilli
- Departments of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
- Emory University, Atlanta, Georgia 30322
| | - Giovanni Natile
- Dipartimento Farmaco-Chimico, Università di Bari, Via E. Orabona 4, 70125 Bari, Italy
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Ranaldo R, Margiotta N, Intini FP, Pacifico C, Natile G. Conformer distribution in (cis-1,4-DACH)bis(guanosine-5'-phosphate)platinum(II) adducts: a reliable model for DNA adducts of antitumoral cisplatin. Inorg Chem 2008; 47:2820-30. [PMID: 18284193 DOI: 10.1021/ic702202x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In [PtCl2(cis-1,4-DACH)] (DACH = diaminocyclohexane), the N-Pt-N bite angle (> or =97 degrees , as determined by X-ray diffraction analysis) is much larger than those found in other Pt complexes with bidentate diamines or in cisplatin (approximately 91 degrees ). Hence, the possibility exists that in (cis-1,4-DACH)PtG 2 adducts, rotation of the G's around the Pt-N7 bonds is slowed enough to allow observation of different conformers. In accord with this prevision, decreasing the temperature to 238 K enabled us to observe different conformers of (cis-1,4-DACH)Pt(5'-GMP) 2 (GMP = guanosine monophosphate). This observation is the first case in which such conformers for a platinum derivative with primary diamines and untethered guanines have been resolved and represents the closest model to clinically effective cisplatin obtained to date. We also found that the presence of the 1,4-DACH ligand increased the intensity of the circular dichroism signal stemming from the dominance of an HT conformer (DeltaHT in the adduct with 3'-GMPs and LambdaHT in the adduct with 5'-GMPs).
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Affiliation(s)
- Rosa Ranaldo
- Dipartimento Farmaco-Chimico, Università degli Studi di Bari, Via E. Orabona 4, 70125 Bari, Italy
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Mastropietro TF, Armentano D, Grisolia E, Zanchini C, Lloret F, Julve M, De Munno G. Guanine-containing copper(ii) complexes: synthesis, X-ray structures and magnetic properties. Dalton Trans 2008:514-20. [DOI: 10.1039/b713960h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Natile G, Marzilli LG. Non-covalent interactions in adducts of platinum drugs with nucleobases in nucleotides and DNA as revealed by using chiral substrates. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.12.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Barceló-Oliver M, Terrón A, García-Raso A, Fiol JJ, Molins E, Miravitlles C. Ternary complexes metal [Co(II), Ni(II), Cu(II) and Zn(II)]--ortho-iodohippurate (I-hip)--acyclovir. X-ray characterization of isostructural [(Co, Ni or Zn)(I-hip)(2)(ACV)(H(2)O)(3)] with stacking as a recognition factor. J Inorg Biochem 2005; 98:1703-11. [PMID: 15522398 DOI: 10.1016/j.jinorgbio.2004.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2004] [Revised: 07/06/2004] [Accepted: 07/07/2004] [Indexed: 10/26/2022]
Abstract
Four ternary metal--ortho-iodohippurate (I-hip)--acyclovir (ACV) complexes, [M(I-hip)(2)(ACV)(H(2)O)(3)] where M is Co(II) (1), Ni(II) (2), Cu (3) and Zn(II) have been obtained by reaction between the corresponding binary complexes M(II)(I-hip)(2)xnH(2)O and ACV. Three ternary complexes (M=Co, Ni and Zn) and the corresponding Zn(II)--ortho-iodohippurate binary derivative have been structurally characterized by X-ray diffraction: The studies show these three ternary complexes are isostructural and present, in solid state, an interesting stacking between the nucleobase and the aryl ring of the hippurate moiety, which probably promotes the formation of ternary complexes. Moreover, the two different ligands interact between them by means of ancillary hydrogen bonds with water molecules coordinated to the metal ion. It must be mentioned that these two recognition factors, hydrogen bonds plus stacking, could explain the reason for the isostructurality of these ternary derivatives with so different three metal ions, with diverses trends in coordination numbers and geometries. In solid state, there are two enantiomeric molecules that are related by an inversion center as the crystal-building unit (as a translational motif) for the ternary complexes.
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Affiliation(s)
- M Barceló-Oliver
- Departament de Química, Universitat de les Illes Balears, Campus UIB, Edifici Mateu Orfila, E07122 Palma de Mallorca, Spain
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McGowan G, Parsons S, Sadler PJ. G-G Base-Pairing in Nucleobase Adducts of the Anticancer Drugcis-[PtCl2(NH3)(2-picoline)] and ItstransIsomer. Chemistry 2005; 11:4396-404. [PMID: 15880542 DOI: 10.1002/chem.200500122] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
cis-[PtCl2(NH3)(2-picoline)] (AMD473) is a sterically-hindered anticancer complex with a profile of chemical and biological activity that differs significantly from that of cisplatin. Adducts of AMD473 with neutral 9-ethylguanine (9-EtGH) and anionic (N1-deprotonated) 9-ethylguanine (9-EtG) as perchlorate and nitrate salts, and also a nitrate salt of the trans isomer (AMD443), were prepared and their structures determined by X-ray crystallography: cis-[Pt(NH3)(2-pic)(9-EtGH)2](ClO4)2 (1).2H(2)OMe(2)CO, cis-[Pt(NH3)(2-pic)(9-EtGH)2](NO3)2 (2).2H2O, cis-[Pt(NH3)(2-pic)(9-EtGH)(9-EtG)]NO3 (3),3.5 H2O, trans-[Pt(NH3)(2-pic)(9-EtGH)(9-EtG)]NO3 (4).8H2O. In all cases, platinum coordination is through N7 of neutral (1, 2) and anionic (3, 4) guanine. In each complex, the guanine bases are arranged in the head-to-tail conformation. In complex 1, there is an infinite array of six-molecule cycles, based on both hydrogen bonding and pi-pi stacking of the 2-picoline and guanine rings. Platinum(II) coordinated at N7 acidifies the N1 proton of neutral 9-ethylguanine (pKa = 9.57) to give pKa1 = 8.40 and pKa2 = 8.75 for complex 2, and pKa1 = 7.77 and pKa2 = 9.00 for complex 4. In complexes 3 and 4, three intermolecular hydrogen bonds are formed between neutral and deprotonated guanine ligands involving O6, N1 and N2 sites. Unusually, both of the platinated guanine bases of complexes 3 and 4 participate in this triple G triple bond G hydrogen bonding. This is the first report of X-ray crystal structures of nucleobase adducts of the promising anticancer drug AMD473.
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Affiliation(s)
- Geraldine McGowan
- School of Chemistry, University of Edinburgh, King's Buildings, West Mains Road, Edinburgh EH9 3JJ, UK
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Carlone M, Marzilli LG, Natile G. Platinum Complexes with Only One Purine Ligand (Guanine, Deoxyguanine, or Adenine) Flanked by Twocis-NH(CH3) Groups - Informative Models for Assessing the Interaction of Purine C6 Substituents withcis-Amines. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400824] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Giese B, McNaughton D. Interaction of anticancer drug cisplatin with guanine: Density functional theory and surface-enhanced Raman spectroscopy study. Biopolymers 2003; 72:472-89. [PMID: 14587070 DOI: 10.1002/bip.10480] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) in a silver sol assisted by density functional theory (DFT) calculations is shown to be a promising tool in the characterization of platinum complexes and their interaction with nucleic acid bases. This is demonstrated using cisplatin and guanine as a model. The energies and geometric parameters of cisplatin, guanine, and their reaction products are calculated at Becke's nonlocal three parameter exchange and correlation functional and the Lee-Yang-Parr correlation functional level using the 6-31++G(d,p) basis set on the light elements and the effective core potential by Hay and Wadt on platinum. Available X-ray crystallography data are mostly in agreement with predictions within the experimental precision level, although Pt-N bond lengths tend to be systematically overestimated. The normal Raman spectrum of cisplatin is assigned. The SERS spectra of cisplatin and its reaction product with guanine are measured from 10(-6) M aqueous solution. The observed spectral changes in the SERS spectrum of guanine upon cisplatin binding are modeled by DFT calculations. The best agreement between theory and experiment is achieved when the adsorbed reaction product is assumed to be the 1:1 adduct cis-Pt(NH3)2ClG in which Pt is bound to N7 and guanine is deprotonated at N9.
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Affiliation(s)
- Bernd Giese
- School of Chemistry and Centre for Biospectroscopy, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
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Cerasino L, Intini FP, Kobe J, de Clercq E, Natile G. Synthesis and stereochemical characterisation of platinum(II) complexes with the antiviral agents penciclovir and famciclovir. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01287-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Holloway, CE, Melnik, M. STRUCTURAL ASPECT OF PLATINUM COORDINATION COMPOUNDS: PART I. MONOMERIC PT0, PT1 AND PTIIA4 DERIVATIVES. REV INORG CHEM 2002. [DOI: 10.1515/revic.2002.22.3-4.163] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Panagiotopoulou A, Katsaros N, Di Masi NG, Natile G. Synthesis and characterisation of platinum(II) complexes with the antiviral agents Ftorafur and Furavir. Inorganica Chim Acta 2001. [DOI: 10.1016/s0020-1693(01)00629-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Herrero LA, Cerro-Garrido JC. A calorimetric study of 3d metal ions-acyclovir interactions. The 2-hydroxyethoxymethyl group of acyclovir mimics the role of ribose in deoxy-guanosine and guanosine promoting the coordination through N(7). J Inorg Biochem 2001; 86:677-80. [PMID: 11583785 DOI: 10.1016/s0162-0134(01)00228-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The equilibrium constants and enthalpic values of metal acyclovir complexes have been determined by calorimetry for Co(II) (log K=0.96+/-0.05, DeltaH (kJ/mol)=-19.7+/-1.3), Ni(II) (log K=1.39+/-0.03, DeltaH (kJ/mol)=-21.5+/-1.0), Cu(II) (log K=1.83+/-0.03, DeltaH (kJ/mol)=-23.2+/-0.8) and Zn(II) (log K=0.71+/-0.06, DeltaH (kJ/mol)=-18.6+/-1.5). The equilibrium constants are similar to those of the divalent ions with guanosine and 2,9-dimethylpurine. By comparison with previous thermodynamic data, it can be shown that the 2-hydroxyethoxymethyl group promotes coordination through N(7) versus N(1) of the guanine ring for 3d metal ions. These results reveal that the 2-hydroxyethoxymethyl group placed on the purine ring of guanine in acyclovir causes a greater effect than that of the 9-methyl in purines and similar to or greater than that of the ribose moiety in guanosine. The 2-hydroxyethyoxymethyl group of acyclovir mimics the role of ribose in deoxy-guanosine and guanosine promoting a similar coordination chemistry (with very close log K and DeltaH values) for acyclovir, deoxy-guanosine and guanosine with divalent metals.
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Affiliation(s)
- L A Herrero
- Departament de Química, Universitat de les Illes Balears, 07071, Palma de Mallorca, Spain
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Margiotta N, Fanizzi F, Kobe J, Natile G. Synthesis, Characterisation and Antiviral Activity of Platinum(II) Complexes with 1,10-Phenanthrolines and the Antiviral Agents Acyclovir and Penciclovir. Eur J Inorg Chem 2001. [DOI: 10.1002/1099-0682(200105)2001:5<1303::aid-ejic1303>3.0.co;2-m] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Cini R, Corsini M, Cavaglioni A. Supramolecular aggregates of complex cations via unusual purine-purine base pairing in a new organorhodium(III) compound containing the antileukemic drug purine-6-thione. Synthesis, X-ray structure of trans(C,N7),trans(S,S),trans(P,N7)-[Rh(C6H5)(H1,H9- H2tp)2(PPh3)][Rh(C6H5)(H1,H9-H2tp)(H9-Htp)(PPh3)]Cl3.HCl.6H2O, and density functional analysis of the [H2tp...Htp]- base pair. Inorg Chem 2000; 39:5874-8. [PMID: 11151393 DOI: 10.1021/ic000814g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R Cini
- Department of Chemical and Biosystem Sciences and Technologies, University of Siena, Via E. Bastianini 12, I-53100 Siena, Italy
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