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Pérez‐Romero A, Domínguez‐Martín A, Galli S, Santamaría‐Díaz N, Palacios O, Dobado JA, Nyman M, Galindo MA. Single‐Stranded DNA as Supramolecular Template for One‐Dimensional Palladium(II) Arrays. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Antonio Pérez‐Romero
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Alicia Domínguez‐Martín
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Simona Galli
- 2 Dipartimento di Scienza e Alta Tecnologia Università dell'Insubria Via Valleggio 11 22100 Como Italy
| | - Noelia Santamaría‐Díaz
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Oscar Palacios
- Departament de Química Facultat de Ciències Universitat Autònoma de Barcelona Campus Bellaterra s/n 08193 Cerdanyola del Vallès, Barcelona Spain
| | - José A. Dobado
- Grupo de Modelización y Diseño Molecular Departamento de Química Orgánica Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - May Nyman
- Department of Chemistry Oregon State University Corvallis OR 97331-4003 USA
| | - Miguel A. Galindo
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
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Pérez‐Romero A, Domínguez‐Martín A, Galli S, Santamaría‐Díaz N, Palacios O, Dobado JA, Nyman M, Galindo MA. Single‐Stranded DNA as Supramolecular Template for One‐Dimensional Palladium(II) Arrays. Angew Chem Int Ed Engl 2021; 60:10089-10094. [DOI: 10.1002/anie.202015554] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/15/2021] [Indexed: 12/27/2022]
Affiliation(s)
- Antonio Pérez‐Romero
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Alicia Domínguez‐Martín
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Simona Galli
- 2 Dipartimento di Scienza e Alta Tecnologia Università dell'Insubria Via Valleggio 11 22100 Como Italy
| | - Noelia Santamaría‐Díaz
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - Oscar Palacios
- Departament de Química Facultat de Ciències Universitat Autònoma de Barcelona Campus Bellaterra s/n 08193 Cerdanyola del Vallès, Barcelona Spain
| | - José A. Dobado
- Grupo de Modelización y Diseño Molecular Departamento de Química Orgánica Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
| | - May Nyman
- Department of Chemistry Oregon State University Corvallis OR 97331-4003 USA
| | - Miguel A. Galindo
- Departamento de Química Inorgánica. Unidad de Excelencia de Química Aplicada a Biomedicina y, Medioambiente Universidad de Granada Avda Fuentenueva s/n 18071 Granada Spain
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Lippert B, Sanz Miguel PJ. Merging Metal–Nucleobase Chemistry With Supramolecular Chemistry. ADVANCES IN INORGANIC CHEMISTRY 2018. [DOI: 10.1016/bs.adioch.2017.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Štarha P, Vančo J, Trávníček Z. Platinum complexes containing adenine-based ligands: An overview of selected structural features. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.09.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Ibáñez S, Mihály B, Sanz Miguel PJ, Steinborn D, Pretzer I, Hiller W, Lippert B. The challenge of deciphering linkage isomers in mixtures of oligomeric complexes derived from 9-methyladenine and trans-(NH3)2Pt(II) units. Chemistry 2015; 21:5794-806. [PMID: 25737270 DOI: 10.1002/chem.201406378] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Indexed: 11/11/2022]
Abstract
Metal coordination to N9-substituted adenines, such as the model nucleobase 9-methyladenine (9MeA), under neutral or weakly acidic pH conditions in water preferably occurs at N1 and/or N7. This leads, not only to mononuclear linkage isomers with N1 or N7 binding, but also to species that involve both N1 and N7 metal binding in the form of dinuclear or oligomeric species. Application of a trans-(NH3)2Pt(II) unit and restriction of metal coordination to the N1 and N7 sites and the size of the oligomer to four metal entities generates over 50 possible isomers, which display different feasible connectivities. Slowly interconverting rotamers are not included in this number. Based on (1)H NMR spectroscopic analysis, a qualitative assessment of the spectroscopic features of N1,N7-bridged species was attempted. By studying the solution behavior of selected isolated and structurally characterized compounds, such as trans-[PtCl(9MeA-N7)(NH3)2]ClO4⋅2H2O or trans,trans-[{PtCl(NH3)2}2(9MeA-N1,N7)][ClO4]2⋅H2O, and also by application of a 9MeA complex with an (NH3)3Pt(II) entity at N7, [Pt(9MeA-N7)(NH3)3][NO3]2, which blocks further cross-link formation at the N7 site, basic NMR spectroscopic signatures of N1,N7-bridged Pt(II) complexes were identified. Among others, the trinuclear complex trans-[Pt(NH3)2{μ-(N1-9MeA-N7)Pt(NH3)3}2][ClO4]6⋅2H2O was crystallized and its rotational isomerism in aqueous solution was studied by NMR spectroscopy and DFT calculations. Interestingly, simultaneous Pt(II) coordination to N1 and N7 acidifies the exocyclic amino group of the two 9MeA ligands sufficiently to permit replacement of one proton each by a bridging heterometal ion, Hg(II) or Cu(II), under mild conditions in water.
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Affiliation(s)
- Susana Ibáñez
- Fakultät Chemie und Chemische Biologie (CCB), Technische Universität Dortmund, Otto-Hahn-Straße 6, 44221 Dortmund (Germany), Fax: (+49) 231-755-3797
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6
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Lüth MS, Freisinger E, Kampf G, Garijo Anorbe M, Griesser R, Operschall BP, Sigel H, Lippert B. Connectivity patterns and rotamer states of nucleobases determine acid-base properties of metalated purine quartets. J Inorg Biochem 2015; 148:93-104. [PMID: 25773716 DOI: 10.1016/j.jinorgbio.2015.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/04/2015] [Accepted: 02/05/2015] [Indexed: 10/24/2022]
Abstract
Potentiometric pH titrations and pD dependent (1)H NMR spectroscopy have been applied to study the acidification of the exocyclic amino group of adenine (A) model nucleobases (N9 position blocked by alkyl groups) when carrying trans-a2Pt(II) (with a=NH3 or CH3NH2) entities both at N1 and N7 positions. As demonstrated, in trinuclear complexes containing central A-Pt-A units, it depends on the connectivity pattern of the adenine bases (N7/N7 or N1/N1) and their rotamer states (head-head or head-tail), how large the acidifying effect is. Specifically, a series of trinuclear complexes with (A-N7)-Pt-(N7-A) and (A-N1)-Pt-(N1-A) cross-linking patterns and terminal 9-alkylguanine ligands (9MeGH, 9EtGH) have been analyzed in this respect, and it is shown that, for example, the 9MeA ligands in trans-,trans-,trans-[Pt(NH3)2(N7-9MeA-N1)2{Pt(NH3)2(9EtGH-N7)}2](ClO4)6·6H2O (4a) and trans-,trans-,trans-[Pt(NH3)2(N7-9EtA-N1)2{Pt(CH3NH2)2(9-MeGH-N7)}2](ClO4)6·3H2O (4b) are more acidic, by ca. 1.3 units (first pKa), than the linkage isomer trans-,trans-,trans-[Pt(CH3NH2)2(N1-9MeA-N7)2{Pt(NH3)2(9MeGH-N7)}2](NO3)6·6.25H2O (1b). Overall, acidifications in these types of complexes amount to 7-9 units, bringing the pKa values of such adenine ligands in the best case close to the physiological pH range. Comparison with pKa values of related trinuclear Pt(II) complexes having different co-ligands at the Pt ions, confirms this picture and supports our earlier proposal that the close proximity of the exocyclic amino groups in a head-head arrangement of (A-N7)-Pt-(N7-A), and the stabilization of the resulting N6H(-)⋯H2N6 unit, is key to this difference.
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Affiliation(s)
- Marc Sven Lüth
- Fakultät Chemie und Chemische Biologie (CCB), Technische Universität, Dortmund 44221 Dortmund, Germany; Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland
| | - Eva Freisinger
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
| | - Gunnar Kampf
- Fakultät Chemie und Chemische Biologie (CCB), Technische Universität, Dortmund 44221 Dortmund, Germany; Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland
| | - Marta Garijo Anorbe
- Fakultät Chemie und Chemische Biologie (CCB), Technische Universität, Dortmund 44221 Dortmund, Germany
| | - Rolf Griesser
- Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland
| | - Bert P Operschall
- Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland
| | - Helmut Sigel
- Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland.
| | - Bernhard Lippert
- Fakultät Chemie und Chemische Biologie (CCB), Technische Universität, Dortmund 44221 Dortmund, Germany.
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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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8
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Amo-Ochoa P, Castillo O, Harrington RW, Zamora F, Houlton A. Substituent and Noncovalent Interaction Effects in the Reactivity of Purine Derivatives with Tetracarboxylato-dirhodium(II) Units. Rationalization of a Rare Binding Mode via N3. Inorg Chem 2013; 52:2174-81. [DOI: 10.1021/ic302602c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pilar Amo-Ochoa
- Departamento de Química Inorgánica, Universidad Autónoma de Madrid, 28049 Madrid,
Spain
| | - Oscar Castillo
- Departamento de Química
Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Apartado
644, E−48080 Bilbao, Spain
| | - Ross W. Harrington
- Chemical Nanoscience Laboratory, School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU,
U.K
| | - Félix Zamora
- Departamento de Química Inorgánica, Universidad Autónoma de Madrid, 28049 Madrid,
Spain
| | - Andrew Houlton
- Chemical Nanoscience Laboratory, School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU,
U.K
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Rother IB, Willermann M, Lippert B. Molecular Architecture with Nucleobases, Metal Ions and Water Molecules: Mixed Adenine, Hypoxanthine Quartet Containing trans -(NH 3 ) 2 Pt II and Ag + and Harboring a Water Hexamer in Its Chair Conformation. Supramol Chem 2010. [DOI: 10.1080/10610270290026095] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Irene B. Rother
- a Fachbereich Chemie , Universität Dortmund , Dortmund , D-44221 , Germany
| | - Michael Willermann
- a Fachbereich Chemie , Universität Dortmund , Dortmund , D-44221 , Germany
| | - Bernhard Lippert
- a Fachbereich Chemie , Universität Dortmund , Dortmund , D-44221 , Germany
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Liu L, Zhang D, Zhang G, Xiang J, Zhu D. Highly Selective Ratiometric Fluorescence Determination of Ag+ Based on a Molecular Motif with One Pyrene and Two Adenine Moieties. Org Lett 2008; 10:2271-4. [DOI: 10.1021/ol8006716] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lei Liu
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Junfeng Xiang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, China
| | - Daoben Zhu
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, China
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11
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Garnovskii AD, Garnovskii DA, Vasil'chenko IS, Burlov AS, Sadimenko AP, Sadekov ID. Competitive coordination: ambident ligands in the modern chemistry of metal complexes. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1997v066n05abeh000258] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Metal–nucleobase interactions in magnesium(II) and manganese(II) complexes with adenine: Influence of the anion on the non-covalent stabilization of 7H-adenine tautomer. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.06.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Meiser C, Song B, Freisinger E, Peilert M, Sigel H, Lippert B. The N3 Position of N9-Substituted Adenine as a Metal Ion Binding Site: Structural and Solution Studies with PdII and PtII Complexes of N6′, N6′,N 9-Trimethyladenine. Chemistry 2006. [DOI: 10.1002/chem.19970030310] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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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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15
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Roitzsch M, Rother IB, Willermann M, Erxleben A, Costisella B, Lippert B. Association patterns of platinated purine nucleobases in metal-modified pairs and triples. Inorg Chem 2002; 41:5946-53. [PMID: 12425619 DOI: 10.1021/ic020403v] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Blocking of Watson-Crick or Hoogsteen edges in purine nucleobases by a metal entity precludes involvement of these sites in interbase hydrogen bonding, thereby leaving the respective other edge or the sugar edge as potential H bonding sites. In mixed guanine, adenine complexes of trans-a2PtII (a = NH3 or CH3NH2) of composition trans-[(NH3)2Pt(9-EtA-N1)(9-MeGH-N7)](NO3)2 (1a), trans-[(NH3)2Pt(9-EtA-N1)(9-MeGH-N7)](ClO4)2 (1b), and trans,trans-[(CH3NH2)2(9-MeGH-N7)Pt(N1-9-MeA-N7)Pt(9-MeGH-N7)(CH3NH2)2](ClO4)4*2H2O (2) (with 9-EtA = 9-ethyladenine, 9-MeA= 9-methyladenine, 9-MeGH = 9-methylguanine), this aspect is studied. Thus, in 1b pairing of two adenine ligands via Hoogsteen edges and in 2 pairing of two guanine bases via sugar edges is realized. These situations are compared with those found in a series of related complexes.
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Affiliation(s)
- Michael Roitzsch
- Fachbereich Chemie, Universität Dortmund, 44221 Dortmund, Germany
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16
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Erxleben A, Metzger S, Britten JF, Lock CJ, Albinati A, Lippert B. Model of the most abundant DNA interstrand cross-link of Transplatin: X-ray structures of two modifications and H bonding behavior in the solid state and in solution of trans-[Pt(NH3)2(1-MeC-N3)(9-EtGH-N7)](ClO4)2·nH2O (1-MeC=1-methylcytosine; 9-EtGH=9-ethylguanine). Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)00955-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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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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18
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Price C, Horrocks BR, Mayeux A, Elsegood MRJ, Clegg W, Houlton A. Self-Complementary Metal Complexes Containing a DNA Base Pair. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020315)114:6<1089::aid-ange1089>3.0.co;2-i] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Price C, Horrocks BR, Mayeux A, Elsegood MRJ, Clegg W, Houlton A. Self-complementary metal complexes containing a DNA base pair. Angew Chem Int Ed Engl 2002; 41:1047-9. [PMID: 12491308 DOI: 10.1002/1521-3773(20020315)41:6<1047::aid-anie1047>3.0.co;2-j] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Clayton Price
- Department of Chemistry, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, UK
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21
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Navarro JA, Lippert B. Simple 1:1 and 1:2 complexes of metal ions with heterocycles as building blocks for discrete molecular as well as polymeric assemblies. Coord Chem Rev 2001. [DOI: 10.1016/s0010-8545(01)00390-3] [Citation(s) in RCA: 177] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Srivatsan SG, Verma S. Nucleobase-containing metallated polymeric resins as artificial phosphodiesterases: kinetics of hydrolysis, pH dependence, and catalyst recycling. Chemistry 2001; 7:828-33. [PMID: 11288874 DOI: 10.1002/1521-3765(20010216)7:4<828::aid-chem828>3.0.co;2-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Two metallated polymeric resins that contain the nucleobase adenine have been investigated for their ability to catalyze the hydrolysis of model phosphodiester substrates. These resins behave in a catalytic manner and display classical Michaelis-Menten kinetics. Consequently, parameters such as kobs, Km, Vmax, and kcat were determined for the two resins for both of the substrates. The most attractive feature of our nucleolytic system is its facile reusability that permits catalysis of multiple hydrolytic reactions, after resin recovery and a simple washing step, without significantly compromising the reaction rate. Involvement of a hydrolytic mechanism for phosphodiester cleavage is proposed on the basis of pH versus hydrolytic rate profiles for the two resins. We have also been able to demonstrate temperature-dependence, solvent effects, and inhibitory nature of vanadate ions on the observed rate of hydrolytic reaction aided by the resins. In conclusion, metallated nucleobase resins represent a new class of nucleolytic reagents and these systems have the potential to be further developed for multifarious applications in chemical biology.
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Affiliation(s)
- S G Srivatsan
- Department of Chemistry, Indian Institute of Technology--Kanpur, India
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23
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Abstract
A preorganized cationic receptor 2 for cytosine (C) is described which is composed of trans-a2PtII (a= NH3 or CH3NH2) cross-linked modules with adenine (A), guanine (G), and uracil (U) or thymine (T) model nucleobases. The functions of these three modules are as follows: i) Adenine orientates the two other bases at right angles, thus producing the L-shape of the receptor. ii) Guanine is the primary receptor. iii) Uracil or thymine act as coreceptors. Compared with the normal Watson-Crick pair between G and C, the association constant between 2 and C increases by a factor of 3 (in DMSO). As deduced from 1H NMR spectroscopy and confirmed by the X-ray crystal structure of the C adduct 4b, cytosine is fixed through five hydrogen bonds to the receptor, one of which involves the aromatic H(5) of C. A comparison of C binding is made with a structurally related linkage isomer receptor as well as the precursor molecule trans[alpha2PtAG]2+. The potential of modular, cationic receptors is illustrated.
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Affiliation(s)
- M S Lüth
- Fachbereich Chemie der Universität Dortmund, Germany
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24
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Sigel RK, Thompson SM, Freisinger E, Glahé F, Lippert B. Metal-modified nucleobase sextet: joining four linear metal fragments (trans-a2PtII) and six model nucleobases to an exceedingly stable entity. Chemistry 2001; 7:1968-80. [PMID: 11405476 DOI: 10.1002/1521-3765(20010504)7:9<1968::aid-chem1968>3.0.co;2-b] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Crosslinking of three different model nucleobases (9-ethyladenine, 9-EtA; 9-ethylguanine, 9-EtGH; 1-methyluracil, 1-MeU) by two linear trans-aPtII (a = NH3 or CH3NH2) entities leads to a flat metal-modified base triplet, trans,trans-[(NH3)2Pt(1-MeU-N3)(mu-9-EtA-N7,N1)Pt(CH3NH2)2(9-EtGH-N7)]3+ (4b). Upon hemideprotonation of the 9-ethylguanine base at the N1 position. 4b spontaneously dimerizes to the metalated nucleobase sextet 5, [(4b)(triple bond)(4b-H)]5+. In this dimeric structure a neutral and an anionic guanine ligand, which are complementary to each other, are joined through three H bonds and additionally by two H bonds between guanine and uracil nucleobases. Four additional interbase H bonds maintain the approximate coplanarity of all six bases. The two base triplets form an exceedingly stable entity (KD = 500 +/- 150 M(-1) in DMSO), which is unprecedented in nucleobase chemistry. The precursor of 4b and several related complexes are described and their structures and solution properties are reported.
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Affiliation(s)
- R K Sigel
- Fachbereich Chemie, Universität Dortmund, Germany
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Sigel RK, Freisinger E, Lippert B. Effects of N7-methylation, N7-platination, and C8-hydroxylation of guanine on H-bond formation with cytosine: platinum coordination strengthens the Watson-Crick pair. J Biol Inorg Chem 2000; 5:287-99. [PMID: 10907739 DOI: 10.1007/pl00010657] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The hydrogen bonding properties of 1-methylcytosine (1-MeC) with the following guanine base derivatives have been studied in DMSO-d6, applying concentration-dependent 1H NMR spectroscopy: 9-ethylguanine, 7,9-dimethylguanine (7,9-DimeGH+), and 7,8-dihydro-8-oxo-9-methylguanine (8-O-9-MeGH), as well as three 9-ethylguanine complexes carrying different Pt(II) moieties at the N7 position. The association constants K for the Watson-Crick pairing schemes are by a factor 2-3 higher in the cases of platinated guanine complexes compared to the Watson-Crick pair between 9-ethylguanine and 1-methylcytosine (K = 6.9 +/- 1.3 M(-1)). Similar enhanced stabilities are observed for the pairs formed between 1-MeC and 7,9-DimeGH+ or 8-O-9-MeGH. The increase in N1H acidity of the guanine derivative upon modification at the N7 or C8 positions can be correlated with the association constants K; the result is a bell-shaped curve meaning that acidification initially stabilizes hydrogen bond formation up to a certain maximum; further acidification then leads to a destabilization. For two of the examples studied in solution, hydrogen bonding according to Watson-Crick between N7-platinated 9-ethylguanine and 1-methylcytosine has also been established by X-ray crystallography.
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Affiliation(s)
- R K Sigel
- Department of Chemistry, University of Dortmund, Germany
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Viljanen J, Klika KD, Sillanpää R, Arpalahti J. Intramolecular Migration of Coordinated Platinum(II) from the N7 Site to the Exocyclic Amino Group in 9-Methyladenine. Inorg Chem 1999; 38:4924-4925. [PMID: 11671231 DOI: 10.1021/ic990498+] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jussi Viljanen
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland
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Navarro JA, Lippert B. Molecular architecture with metal ions, nucleobases and other heterocycles. Coord Chem Rev 1999. [DOI: 10.1016/s0010-8545(99)00016-8] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sigel RKO, Sabat M, Freisinger E, Mower A, Lippert B. Metal-Modified Base Pairs Involving Different Donor Sites of Purine Nucleobases: trans-[a2Pt(7,9-DimeG-N1)(9-EtGH-N7)]2+andtrans-[a2Pt(7,9-DimeG-N1)(9-EtG-N7)]+(a = NH3or CH3NH2; 9-EtGH = 9-Ethylguanine; 7,9-DimeG = 7,9-Dimethylguanine). Possible Relevance to Metalated DNA Triplex Structures. Inorg Chem 1999. [DOI: 10.1021/ic981005o] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lippert B. Impact of Cisplatin on the recent development of Pt coordination chemistry: a case study. Coord Chem Rev 1999. [DOI: 10.1016/s0010-8545(98)00192-1] [Citation(s) in RCA: 149] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sigel RKO, Freisinger E, Metzger S, Lippert B. Metalated Nucleobase Quartets: Dimerization of a Metal-Modified Guanine, Cytosine Pair oftrans-(NH3)2PtIIand Formation of CH···N Hydrogen Bonds. J Am Chem Soc 1998. [DOI: 10.1021/ja981637+] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lüth MS, Freisinger E, Glahé F, Lippert B. Mixed Adenine, Guanine Nucleobase Quartets: Metal-Modified Forms of an Open U and a Closed Rectangle. Inorg Chem 1998. [DOI: 10.1021/ic9808495] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marc Sven Lüth
- Fachbereich Chemie, University of Dortmund, D-44221 Dortmund, Germany
| | - Eva Freisinger
- Fachbereich Chemie, University of Dortmund, D-44221 Dortmund, Germany
| | - Frank Glahé
- Fachbereich Chemie, University of Dortmund, D-44221 Dortmund, Germany
| | - Bernhard Lippert
- Fachbereich Chemie, University of Dortmund, D-44221 Dortmund, Germany
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Mizutani M, Jitsukawa K, Masuda H, Aoyama Y, Einaga H. Formation of a Novel Diaqua Disodium Tetrakis(1-methyluracilato)palladium Complex with a Unique Supramolecular Channel Structure. CHEM LETT 1998. [DOI: 10.1246/cl.1998.663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lüth MS, Freisinger E, Glahé, F, Müller J, Lippert B. Taking Advantage of Right Angles in N1,N7-Diplatinated Purine Nucleobases: Toward Molecular Squares, Rectangles, and Meanders. Inorg Chem 1998. [DOI: 10.1021/ic980081o] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marc Sven Lüth
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany
| | - Eva Freisinger
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany
| | - Frank Glahé,
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany
| | - Jens Müller
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany
| | - Bernhard Lippert
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany
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AuIII binding to C5 of the model nucleobase 1,3-dimethyluracil (1,3-DimeU): Preparation and X-ray crystal structures of trans-K[Au(CN)2Cl(1,3-DimeU−)] and of two derivatives. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(97)00567-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Schröder G, Sabat M, Baxter I, Kozelka J, Lippert B. cis-[Pt(NH3)2(9-MeA-N7)(9-EtGH-N7)](PF6)2·1.5H2O (9-MeA = 9-Methyladenine; 9-EtGH = 9-Ethylguanine): A Right-Handed Helicoidal Model Compound for the Intrastrand A,G Cross-Link in Duplex DNA. Inorg Chem 1997. [DOI: 10.1021/ic9611296] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guy Schröder
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany, Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes, F-75270 Paris Cedex 06, France
| | - Michal Sabat
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany, Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes, F-75270 Paris Cedex 06, France
| | - Ivan Baxter
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany, Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes, F-75270 Paris Cedex 06, France
| | - Jirí Kozelka
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany, Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes, F-75270 Paris Cedex 06, France
| | - Bernhard Lippert
- Fachbereich Chemie, Universität Dortmund, D-44221 Dortmund, Germany, Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes, F-75270 Paris Cedex 06, France
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Metzger S, Lippert B. A Metalated Guanine,Cytosine Base Quartet with a Novel GC Pairing Pattern Involving H(5) of C. J Am Chem Soc 1996. [DOI: 10.1021/ja962738f] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Susanne Metzger
- Fachbereich Chemie, University of Dortmund D-44221 Dortmund, Germany
| | - Bernhard Lippert
- Fachbereich Chemie, University of Dortmund D-44221 Dortmund, Germany
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Colombier C, Lippert B, Leng M. Interstrand cross-linking reaction in triplexes containing a monofunctional transplatin-adduct. Nucleic Acids Res 1996; 24:4519-24. [PMID: 8948644 PMCID: PMC146263 DOI: 10.1093/nar/24.22.4519] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Our aim was to determine whether a single transplatin monofunctional adduct, either trans-[Pt(NH3)2(dC)Cl]+ or trans-[Pt(NH3)2(dG)Cl]+ within a homopyrimidine oligonucleotide, could further react and form an interstrand cross-link once the platinated oligonucleotide was bound to the complementary duplex. The single monofunctional adduct was located at either the 5' end or in the middle of the platinated oligonucleotide. In all the triplexes, specific interstrand cross-links were formed between the platinated Hoogsteen strand and the complementary purine-rich strand. No interstrand cross-links were detected between the platinated oligonucleotides and non-complementary DNA. The yield and the rate of the cross-linking reaction depend upon the nature and location of the monofunctional adducts. Half-lives of the monofunctional adducts within the triplexes were in the range 2-6 h. The potential use of the platinated oligonucleotides to modulate gene expression is discussed.
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Affiliation(s)
- C Colombier
- Centre de Biophysique Moléculaire, CNRS, Orléans, France
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