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Ranasinghe K, Marzilli PA, Pakhomova S, Marzilli LG. New fac-[ReI(CO)3(Ltri)]Y complexes of linear N,N′,N′′-tridentate ligands (Ltri) with terminal imidazolyl or pyridyl ring (N and N′′) and central tertiary sulfonamide (N′) N-donors. Effects of size and substituents of the terminal N-donor rings and the rarely found direct sulfonamide N to metal bond. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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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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Andrepont C, Marzilli PA, Pakhomova S, Marzilli LG. Guanine nucleobase adducts formed by a monofunctional complex: [Pt(N-(6-methyl-2-picolyl)-N-(2-picolyl)amine)Cl]Cl. J Inorg Biochem 2015; 153:219-230. [DOI: 10.1016/j.jinorgbio.2015.06.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/12/2015] [Accepted: 06/30/2015] [Indexed: 01/18/2023]
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Andrepont C, Pakhomova S, Marzilli PA, Marzilli LG. Unusual Example of Chelate Ring Opening upon Coordination of the 9-Ethylguanine Nucleobase to [Pt(di-(6-methyl-2-picolyl)amine)Cl]Cl. Inorg Chem 2015; 54:4895-908. [DOI: 10.1021/acs.inorgchem.5b00496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Chase Andrepont
- 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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Margiotta N, Petruzzella E, Platts JA, Mutter ST, Deeth RJ, Ranaldo R, Papadia P, Marzilli PA, Marzilli LG, Hoeschele JD, Natile G. DNA fragment conformations in adducts with Kiteplatin. Dalton Trans 2015; 44:3544-56. [DOI: 10.1039/c4dt01796j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The anticancer-active platinum complex with cis-1,4-diaminocyclohexane has proved to be very valuable in detecting multiple conformers in adducts with oligonucleotides.
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Affiliation(s)
- Nicola Margiotta
- Dipartimento di Chimica
- Università degli Studi di Bari A. Moro
- 70125 Bari
- Italy
| | | | | | | | | | - Rosa Ranaldo
- Dipartimento di Chimica
- Università degli Studi di Bari A. Moro
- 70125 Bari
- Italy
- Department of Chemistry
| | - Paride Papadia
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- 73100 Lecce
- Italy
| | | | | | | | - Giovanni Natile
- Dipartimento di Chimica
- Università degli Studi di Bari A. Moro
- 70125 Bari
- Italy
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Chen L, Wang XL, Shi T, Wu T, Deng Z, Zhao YL. Theoretical study on the relationship between Rp-phosphorothioation and base-step in S-DNA: based on energetic and structural analysis. J Phys Chem B 2014; 119:474-81. [PMID: 25519472 DOI: 10.1021/jp511359e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Phosphorothioation (PT), previously used in synthetic antisense drugs to arrest the transcription or translation process, is also a novel physiological modification in bacteria DNAs. In the previous study, we reported that Rp-phosphorothioation (Rp-PT) destabilizes B-type helix significantly, using a quantum-mechanics-based energy scoring function developed with a dinucleotide model ( Zhang et al. J. Phys. Chem. B , 2012 , 116 , 10639 - 10648 ). A consequent question surfaces in the field of the phosphorothioated DNA (S-DNA) research: does the endogenous chemical modification interact with the base sequence in the bacterial genomes, e.g., in terms of the most common structure of the B-type helix? In this work, we carried out further energetic analysis on the backbone relative energies calculated with the scoring function according to 16 groups of base-step classifications. Moreover, we conducted molecular dynamics simulations of the B-helical structure with the different base-pair steps, to investigate the detailed structural changes upon the O-/S-substitution. As a result, the Rp-PT modification definitively enhances the stiffness of the backbone and differentiates backbone stability as an interaction with base-steps. Furthermore, certain exceptional sequences such as GT and CC were highlighted in the structural analysis of the sulfur local contacts and relative orientation of double strands, indicating that Rp-PT can cross-talk with particular base-steps. The special effects between the phosphorothioation and base-step may be related to the conservative consensus observed highly frequently in bacterial genomes.
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Affiliation(s)
- Limeng Chen
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, China
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Chval Z, Kabeláč M, Burda JV. Mechanism of the cis-[Pt(1R,2R-DACH)(H2O)2]2+ intrastrand binding to the double-stranded (pGpG)·(CpC) dinucleotide in aqueous solution: a computational DFT study. Inorg Chem 2013; 52:5801-13. [PMID: 23656523 DOI: 10.1021/ic302654s] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A mechanism of the intrastrand 1,2-cross-link formation between the double-stranded pGpG·CpC dinucleotide (ds(pGpG)) and fully aquated oxaliplatin cis-[Pt(DACH)(H2O)2](2+) (DACH = cyclohexane-1R,2R-diamine) is presented. All structures of the reaction pathways including the transition states (TSs) were fully optimized in water solvent using DFT methodology with dispersion corrections. Both 5' → 3' and 3' → 5' binding directions were considered. In the first step there is a slight kinetic preference for 5'-guanine (5'G) monoadduct formation with an activation Gibbs free energy of 18.7 kcal/mol since the N7 center of the 5'G base is fully exposed to the solvent. On the other hand, the N7 atom of 3'-guanine (3'G) is sterically shielded by 5'G. The lowest energy path for formation of the 3'G monoadduct with an activation barrier of 19.3 kcal/mol is connected with a disruption of the 'DNA-like' structure of ds(pGpG). Monoadduct formation is the rate-determining process. The second step, chelate formation, is kinetically preferred in the 3' → 5' direction. The whole process of the platination is exergonic by up to -18.8 kcal/mol. Structural changes of ds(pGpG), charge transfer effects, and the influence of platination on the G·C base pair interaction strengths are also discussed in detail.
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Affiliation(s)
- Zdeněk Chval
- Department of Laboratory Methods and Information Systems, Faculty of Health and Social Studies, University of South Bohemia, J. Boreckého 27, 370 11 České Budějovice, Czech Republic.
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Andrepont C, Marzilli PA, Marzilli LG. Guanine nucleobase adducts formed by [Pt(di-(2-picolyl)amine)Cl]Cl: evidence that a tridentate ligand with only in-plane bulk can slow guanine base rotation. Inorg Chem 2012; 51:11961-70. [PMID: 23094695 DOI: 10.1021/ic3018634] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pt(II) complexes bind preferentially at N7 of G residues of DNA, causing DNA structural distortions associated with anticancer activity. Some distortions induced by difunctional cisplatin are also found for monofunctional Pt(II) complexes with carrier ligands having bulk projecting toward the guanine base. This ligand bulk can be correlated with impeded rotation about the Pt-N7(guanine) bond. Pt(N(H)dpa)(G) adducts (N(H)dpa = di-(2-picolyl)amine, G = 5'-GMP, 5'-GDP, 5'-GTP, guanosine, 9-EtG, and 5'-IMP) were used to assess whether a tridentate carrier ligand having bulk concentrated in the coordination plane can impede guanine nucleobase rotation. Because the Pt(N(H)dpa) moiety contains a mirror plane but is unsymmetrical with respect to the coordination plane, Pt(N(H)dpa)(G) adducts can form anti or syn rotamers with the guanine O6 and the central N-H of N(H)dpa on the opposite or the same side of the coordination plane, respectively. The observation of two sharp, comparably intense guanine H8 NMR signals provided evidence that these Pt(N(H)dpa)(G) adducts exist as mixtures of syn and anti rotamers, that rotational interchange is impeded by N(H)dpa, and that the key interactions involves steric repulsions between the pyridyl and guanine rings. The relative proximity of the guanine H8 to the anisotropic pyridyl rings allowed us to conclude that the syn rotamer was usually more abundant. However, the anti rotamer was more abundant for the Pt(N(H)dpa)(5'-GTP) adduct, in which a hydrogen bond between the 5'-GTP γ-phosphate group and the N(H)dpa central N-H is geometrically possible. In all previous examples of the influence of hydrogen bond formation on rotamer abundance in Pt(II) guanine adducts, these hydrogen bonding interactions occurred between ligand groups in cis positions. Thus, the role of a trans ligand group in influencing rotamer abundance, as found here, is unusual.
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Affiliation(s)
- Chase Andrepont
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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Chen Z, Zhang G, Chen X, Chen J, Liu J. A label-free method for studying DNA sequence recognition of mitoxantrone based on resonance light-scattering technique. J Antibiot (Tokyo) 2012; 65:517-22. [DOI: 10.1038/ja.2012.58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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A resonance light-scattering off–on system for studies of the selective interaction between adriamycin and DNA. Anal Bioanal Chem 2012; 402:2163-71. [DOI: 10.1007/s00216-011-5672-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 12/14/2011] [Accepted: 12/16/2011] [Indexed: 10/14/2022]
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Chen Z, Zhang G, Chen X, Chen J, Qian S, Li Q. A resonance light scattering quenching system for studying DNA sequence recognition of actinomycin D. Analyst 2012; 137:722-8. [DOI: 10.1039/c1an15855d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhou L. Computational study on the mechanisms of action of the potential anticancer drug trans-isopropylaminedimethylaminedichloroplatinum (trans-IPADMADP) and its cis isomer with DNA purine bases. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.05.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Saad JS, Marzilli PA, Intini FP, Natile G, Marzilli LG. Single-stranded oligonucleotide adducts formed by Pt complexes favoring left-handed base canting: steric effect of flanking residues and relevance to DNA adducts formed by Pt anticancer drugs. Inorg Chem 2011; 50:8608-20. [PMID: 21819051 DOI: 10.1021/ic2011716] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Platinum anticancer drug binding to DNA creates large distortions in the cross-link (G*G*) and the adjacent XG* base pair (bp) steps (G* = N7-platinated G). These distortions, which are responsible for anticancer activity, depend on features of the duplex (e.g., base pairing) and of the cross-link moiety (e.g., the position and canting of the G* bases). The duplex structure stabilizes the head-to-head (HH) over the head-to-tail (HT) orientation and right-handed (R) over left-handed (L) canting of the G* bases. To provide fundamental chemical information relevant to the assessment of such duplex effects, we examine (S,R,R,S)-BipPt(oligo) adducts (Bip = 2,2'-bipiperidine with S,R,R,S chiral centers at the N, C, C, and N chelate ring atoms, respectively; oligo = d(G*pG*) with 3'- and/or 5'-substituents). The moderately bulky (S,R,R,S)-Bip ligand favors L canting and slows rotation about the Pt-G* bonds, and the (S,R,R,S)-BipPt(oligo) models provide more useful data than do dynamic models derived from active Pt drugs. All 5'-substituents in (S,R,R,S)-BipPt(oligo) adducts favor the normal HH conformer (∼97%) by destabilizing the HT conformer through clashes with the 3'-G* residue rather than through favorable H-bonding interactions with the carrier ligand in the HH conformer. For all (S,R,R,S)-BipPt(oligo) adducts, the S pucker of the 5'-X residue is retained. For these adducts, a 5'-substituent had only modest effects on the degree of L canting for the (S,R,R,S)-BipPt(oligo) HH conformer. This small flanking 5'-substituent effect on an L-canted HH conformer contrasts with the significant decrease in the degree of R canting previously observed for flanking 5'-substituents in the R-canted (R,S,S,R)-BipPt(oligo) analogues. The present data support our earlier hypothesis that the distortion distinctive to the XG* bp step (S to N pucker change and movement of the X residue) is required for normal stacking and X·X' WC H bonding and to prevent XG* residue clashes.
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Affiliation(s)
- Jamil S Saad
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
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Maheshwari V, Marzilli PA, Marzilli LG. Investigation Relevant to the Conformation of the 17-Membered Pt(d(GpG)) Macrocyclic Ring Formed by Pt Anticancer Drugs with DNA: Pt Complexes with a Goldilocks Carrier Ligand. Inorg Chem 2011; 50:6626-36. [DOI: 10.1021/ic200512m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vidhi Maheshwari
- 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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Saad JS, Benedetti M, Natile G, Marzilli LG. NMR studies of models having the Pt(d(GpG)) 17-membered macrocyclic ring formed in DNA by platinum anticancer drugs: Pt complexes with bulky chiral diamine ligands. Inorg Chem 2011; 50:4559-71. [PMID: 21510625 DOI: 10.1021/ic200259s] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The highly distorted Pt(d(G*pG*)) (G* = N7-platinated G) 17-membered macrocyclic ring formed by cisplatin anticancer drug binding to DNA alters the structure of the G*G* base pair steps, canting one base, and increases dynamic motion, complicating solution structural studies. However, the ring appears to favor the HH1 conformation (HH1 denotes head-to-head guanine bases, 1 denotes the normal direction of backbone propagation). Compared to cisplatin, analogues with NH groups in the carrier ligand replaced by bulky N-alkyl groups are more toxic and less active and form less dynamic adducts. To examine the molecular origins for the biological effects of steric bulk, we evaluate Me(4)DABPt(d(G*pG*)) models; the bulk and chirality of Me(4)DAB (N,N,N',N'-tetramethyl-2,3-diaminobutane with S,S or R,R configurations at the chelate ring carbons) impede dynamic motion and enhance the utility of NMR methods for identifying and characterizing conformers. Unlike past studies of adducts with such bulky carrier ligands, in which no HH conformer was found, the Me(4)DABPt(d(G*pG*)) adducts did form the HH1 conformer, providing compelling evidence that the sugar-phosphate backbone can impose constraints sufficient to overcome the alkyl-group steric effects. The HH1 conformer exhibits no significant canting. The (S,S)-Me(4)DABPt(d(G*pG*)) adduct has the least amount of the "normal" HH1 conformer and the greatest amount of the ΔHT1 conformer (ΔHT1 = head-to-tail G* bases with Δ chirality) ever observed (88% under some conditions). Thus, our results lead us to hypothesize that the low activity and high toxicity of analogues of cisplatin having carrier ligands with N-alkyl groups arise from the low abundance and minimal canting of the HH1 conformer and possibly from the adverse effects of an abundant ΔHT1 conformer. The new findings advance our understanding of the chemistry of the Pt(d(G*pG*)) macrocyclic ring and of the effects of carrier-ligand steric bulk on the properties of the ring.
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Affiliation(s)
- Jamil S Saad
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
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Khutia A, Sanz Miguel PJ, Lippert B. “Directed” Assembly of Metallacalix[n]arenes with Pyrimidine Nucleobase Ligands of Low Symmetry: Metallacalix[n]arene Derivatives of cis-[a2M(cytosine-N3)2]2+ (M=PtII, PdII; n=4 and 6). Chemistry 2011; 17:4195-204. [DOI: 10.1002/chem.201002722] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Indexed: 11/06/2022]
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Chapman EG, Hostetter AA, Osborn MF, Miller AL, DeRose VJ. Binding of kinetically inert metal ions to RNA: the case of platinum(II). Met Ions Life Sci 2011; 9:347-77. [PMID: 22010278 PMCID: PMC4080900 DOI: 10.1039/9781849732512-00347] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this chapter several aspects of Pt(II) are highlighted that focus on the properties of Pt(II)-RNA adducts and the possibility that they influence RNA-based processes in cells. Cellular distribution of Pt(II) complexes results in significant platination of RNA, and localization studies find Pt(II) in the nucleus, nucleolus, and a distribution of other sites in cells. Treatment with Pt(II) compounds disrupts RNA-based processes including enzymatic processing, splicing, and translation, and this disruption may be indicative of structural changes to RNA or RNA-protein complexes. Several RNA-Pt(II) adducts have been characterized in vitro by biochemical and other methods. Evidence for Pt(II) binding in non-helical regions and for Pt(II) cross-linking of internal loops has been found. Although platinated sites have been identified, there currently exists very little in the way of detailed structural characterization of RNA-Pt(II) adducts. Some insight into the details of Pt(II) coordination to RNA, especially RNA helices, can be gained from DNA model systems. Many RNA structures, however, contain complex tertiary folds and common, purine-rich structural elements that present suitable Pt(II) nucleophiles in unique arrangements which may hold the potential for novel types of platinum-RNA adducts. Future research aimed at structural characterization of platinum-RNA adducts may provide further insights into platinum-nucleic acid binding motifs, and perhaps provide a rationale for the observed inhibition by Pt(II) complexes of splicing, translation, and enzymatic processing.
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Affiliation(s)
- Erich G. Chapman
- Department of Chemistry University of Oregon Eugene OR 97403 USA
| | | | - Maire F. Osborn
- Department of Chemistry University of Oregon Eugene OR 97403 USA
| | - Amanda L. Miller
- Department of Chemistry University of Oregon Eugene OR 97403 USA
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Saad JS, Benedetti M, Natile G, Marzilli LG. Basic Coordination Chemistry Relevant to DNA Adducts Formed by the Cisplatin Anticancer Drug. NMR Studies on Compounds with Sterically Crowded Chiral Ligands. Inorg Chem 2010; 49:5573-83. [DOI: 10.1021/ic100494f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jamil S. Saad
- Departments of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 and Emory University, Atlanta, Georgia 30322
| | - Michele Benedetti
- Dipartimento Farmaco-Chimico, Università di Bari, Via E. Orabona, 4, 70125 bari, Italy
| | - Giovanni Natile
- Dipartimento Farmaco-Chimico, Università di Bari, Via E. Orabona, 4, 70125 bari, Italy
| | - Luigi G. Marzilli
- Departments of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 and Emory University, Atlanta, Georgia 30322
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Exploring water-soluble Pt(II) complexes of diethylenetriamine derivatives functionalized at the central nitrogen. Synthesis, characterization, and reaction with 5′-GMP. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Georgiades SN, Vilar R. Interaction of metal complexes with nucleic acids. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b918406f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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