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Boisten F, Maisuls I, Schäfer T, Strassert CA, Müller J. Site-specific covalent metalation of DNA oligonucleotides with phosphorescent platinum(ii) complexes. Chem Sci 2023; 14:2399-2404. [PMID: 36873838 PMCID: PMC9977450 DOI: 10.1039/d2sc05916a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Phosphorescent Pt(II) complexes, composed of a tridentate N^N^C donor ligand and a monodentate ancillary ligand, were covalently attached to DNA oligonucleotides. Three modes of attachment were investigated: positioning the tridentate ligand as an artificial nucleobase via a 2'-deoxyribose or a propane-1,2-diol moiety and orienting it towards the major groove by appending it to a uridine C5 position. The photophysical properties of the complexes depend on the mode of attachment and on the identity of the monodentate ligand (iodido vs. cyanido ligand). Significant duplex stabilization was observed for all cyanido complexes when they are attached to the DNA backbone. The luminescence strongly depends on whether a single or two adjacent complexes are introduced, with the latter showing an additional emission band indicative of excimer formation. The doubly platinated oligonucleotides could be useful as ratiometric or lifetime-based oxygen sensors, as the green photoluminescence intensities and average lifetimes of the monomeric species are drastically boosted upon deoxygenation, whereas the red-shifted excimer phosphorescence is nearly insensitive to the presence of triplet dioxygen in solution.
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Affiliation(s)
- Felix Boisten
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie Corrensstr. 28/30 48149 Münster Germany
| | - Iván Maisuls
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie Corrensstr. 28/30 48149 Münster Germany .,Westfälische Wilhelms-Universität Münster, Center for Nanotechnology (CeNTech) Heisenbergstr. 11 48149 Münster Germany
| | - Tim Schäfer
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie Corrensstr. 28/30 48149 Münster Germany
| | - Cristian A Strassert
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie Corrensstr. 28/30 48149 Münster Germany .,Westfälische Wilhelms-Universität Münster, Center for Nanotechnology (CeNTech) Heisenbergstr. 11 48149 Münster Germany.,Westfälische Wilhelms-Universität Münster, Center for Soft Nanoscience (SoN) and Cells in Motion Interfaculty Centre (CiMIC) Corrensstr. 28/30 48149 Münster Germany
| | - Jens Müller
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie Corrensstr. 28/30 48149 Münster Germany .,Westfälische Wilhelms-Universität Münster, Center for Soft Nanoscience (SoN) and Cells in Motion Interfaculty Centre (CiMIC) Corrensstr. 28/30 48149 Münster Germany
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2
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Hennessy J, McGorman B, Molphy Z, Farrell NP, Singleton D, Brown T, Kellett A. A Click Chemistry Approach to Targeted DNA Crosslinking with
cis
‐Platinum(II)‐Modified Triplex‐Forming Oligonucleotides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202110455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joseph Hennessy
- School of Chemical Sciences and National Institute for Cellular Biotechnology Dublin City University, Glasnevin Dublin 9 Ireland
| | - Bríonna McGorman
- School of Chemical Sciences and National Institute for Cellular Biotechnology Dublin City University, Glasnevin Dublin 9 Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology Dublin City University, Glasnevin Dublin 9 Ireland
- Synthesis and Solid-State Pharmaceutical Centre School of Chemical Sciences Dublin City University, Glasnevin Dublin 9 Ireland
| | - Nicholas P. Farrell
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - Daniel Singleton
- ATDBio Ltd. School of Chemistry University of Southampton Southampton SO17 1BJ UK
| | - Tom Brown
- ATDBio Ltd. School of Chemistry University of Southampton Southampton SO17 1BJ UK
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology Dublin City University, Glasnevin Dublin 9 Ireland
- Synthesis and Solid-State Pharmaceutical Centre School of Chemical Sciences Dublin City University, Glasnevin Dublin 9 Ireland
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3
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Hennessy J, McGorman B, Molphy Z, Farrell NP, Singleton D, Brown T, Kellett A. A Click Chemistry Approach to Targeted DNA Crosslinking with cis-Platinum(II)-Modified Triplex-Forming Oligonucleotides. Angew Chem Int Ed Engl 2022; 61:e202110455. [PMID: 34652881 PMCID: PMC9299770 DOI: 10.1002/anie.202110455] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/11/2021] [Indexed: 01/05/2023]
Abstract
Limitations of clinical platinum(II) therapeutics include systemic toxicity and inherent resistance. Modern approaches, therefore, seek new ways to deliver active platinum(II) to discrete nucleic acid targets. In the field of antigene therapy, triplex-forming oligonucleotides (TFOs) have attracted interest for their ability to specifically recognise extended duplex DNA targets. Here, we report a click chemistry based approach that combines alkyne-modified TFOs with azide-bearing cis-platinum(II) complexes-based on cisplatin, oxaliplatin, and carboplatin motifs-to generate a library of PtII -TFO hybrids. These constructs can be assembled modularly and enable directed platinum(II) crosslinking to purine nucleobases on the target sequence under the guidance of the TFO. By covalently incorporating modifications of thiazole orange-a known DNA-intercalating fluorophore-into PtII -TFOs constructs, enhanced target binding and discrimination between target and off-target sequences was achieved.
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Affiliation(s)
- Joseph Hennessy
- School of Chemical Sciences and National Institute for Cellular BiotechnologyDublin City University, GlasnevinDublin9Ireland
| | - Bríonna McGorman
- School of Chemical Sciences and National Institute for Cellular BiotechnologyDublin City University, GlasnevinDublin9Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular BiotechnologyDublin City University, GlasnevinDublin9Ireland
- Synthesis and Solid-State Pharmaceutical CentreSchool of Chemical SciencesDublin City University, GlasnevinDublin9Ireland
| | - Nicholas P. Farrell
- Department of ChemistryVirginia Commonwealth UniversityRichmondVA23284-2006USA
| | - Daniel Singleton
- ATDBio Ltd.School of ChemistryUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Tom Brown
- ATDBio Ltd.School of ChemistryUniversity of SouthamptonSouthamptonSO17 1BJUK
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular BiotechnologyDublin City University, GlasnevinDublin9Ireland
- Synthesis and Solid-State Pharmaceutical CentreSchool of Chemical SciencesDublin City University, GlasnevinDublin9Ireland
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4
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Shoji T, Fukutomi H, Okada Y, Chiba K. Artificial bioconjugates with naturally occurring linkages: the use of phosphodiester. Beilstein J Org Chem 2018; 14:1946-1955. [PMID: 30112100 PMCID: PMC6071721 DOI: 10.3762/bjoc.14.169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 07/06/2018] [Indexed: 12/22/2022] Open
Abstract
Artificial orthogonal bond formations such as the alkyne–azide cycloaddition have enabled selective bioconjugations under mild conditions, yet naturally occurring linkages between native functional groups would be more straightforward to elaborate bioconjugates. Herein, we describe the use of a phosphodiester bond as a versatile option to access various bioconjugates. An opposite activation strategy, involving 5’-phosphitylation of the supported oligonucleotides, has allowed several biomolecules that possess an unactivated alcohol to be directly conjugated. It should be noted that there is no need to pre-install artificial functional groups and undesired and unpredictable perturbations possibly caused by bioconjugation can be minimized.
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Affiliation(s)
- Takao Shoji
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Hiroki Fukutomi
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Yohei Okada
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Kazuhiro Chiba
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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5
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Heinze K, Beckmann M, Hempel K. Solid-Phase Synthesis of Transition-Metal Complexes. Chemistry 2008; 14:9468-80. [DOI: 10.1002/chem.200800697] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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6
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Mulcahy SP, Li S, Korn R, Xie X, Meggers E. Solid-phase synthesis of tris-heteroleptic ruthenium(II) complexes and application to acetylcholinesterase inhibition. Inorg Chem 2008; 47:5030-2. [PMID: 18373338 DOI: 10.1021/ic800080b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A synthetic route with two consecutive coordination chemistry steps on a solid support affords tris-heteroleptic ruthenium(II) polypyridyl complexes with high purity and in good yields. As an application we report the identification of a nanomolar acetylcholinesterase inhibitor from a small ruthenium complex library synthesized on Lanterns.
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Benedetti M, Ducani C, Migoni D, Antonucci D, Vecchio VM, Ciccarese A, Romano A, Verri T, Ciccarella G, Fanizzi FP. Experimental evidence that a DNA polymerase can incorporate N7-platinated guanines to give platinated DNA. Angew Chem Int Ed Engl 2008; 47:507-10. [PMID: 18058887 DOI: 10.1002/anie.200703160] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
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8
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Benedetti M, Ducani C, Migoni D, Antonucci D, Vecchio V, Ciccarese A, Romano A, Verri T, Ciccarella G, Fanizzi F. Experimental Evidence That a DNA Polymerase Can Incorporate N7-Platinated Guanines To Give Platinated DNA. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9
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Maisonial A, Serafin P, Traïkia M, Debiton E, Théry V, Aitken DJ, Lemoine P, Viossat B, Gautier A. Click Chelators for Platinum-Based Anticancer Drugs. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200700849] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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10
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Algueró B, Pedroso E, Marchán V, Grandas A. Incorporation of two modified nucleosides allows selective platination of an oligonucleotide making it suitable for duplex cross-linking. J Biol Inorg Chem 2007; 12:901-11. [PMID: 17534671 DOI: 10.1007/s00775-007-0243-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Accepted: 04/30/2007] [Indexed: 11/28/2022]
Abstract
Platinated oligonucleotides are promising tools for the control of gene expression, since they may target and cross-link nucleic acid chains. Here we describe a method for the preparation of platinated oligonucleotides that has proved able to selectively cross-link complementary sequences, making use of 5-methylcytidine analogs with thioether or imidazole groups attached to the 4-position. These nucleoside analogs were derivatized as phosphoramidites and introduced in oligonucleotide chains using standard phosphite triester chemistry. Different oligonucleotide sequences containing either one or two analogs appending from the 5'-end were synthesized and used in preliminary platination studies. The reaction of transplatin with oligonucleotides containing the thioether-modified nucleobase was fast, but generally afforded unstable adducts and complex reaction mixtures. The imidazole-containing oligonucleotides reacted with transplatin much more slowly, in particular at slightly basic pH, and it was found that the imidazole-modified cytosine was less reactive than the natural nucleobases. In contrast, transplatin selectively reacted with the thioether and imidazole groups of oligonucleotides containing the two cytosine analogs in neighboring positions, even in the presence of the four nucleobases and particularly three guanines, affording platinated oligonucleotides suitable for cross-linking.
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Affiliation(s)
- Berta Algueró
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
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11
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Reinhardt S, Heinze K. Solid- and Solution Phase Synthesis of Diiminedichloroplatinum(II) Complexes. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200600032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Targeting platinum anti-tumour drugs: Overview of strategies employed to reduce systemic toxicity. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2005.03.005] [Citation(s) in RCA: 254] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Sharma SK, McLaughlin LW. Triplex mediated delivery of a platinum complex to a specific DNA target site. J Inorg Biochem 2004; 98:1570-7. [PMID: 15458818 DOI: 10.1016/j.jinorgbio.2004.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2004] [Revised: 03/26/2004] [Accepted: 03/27/2004] [Indexed: 11/21/2022]
Abstract
Tethering an ethylene diamine linker to the 5' terminus of an oligothymidine sequence provides a site for complexation with K(2)PtCl(4). Due to the low reactivity of dT toward a platinum source, we chose dT(8) and dT(15) as our initial synthetic targets for platination. Post-synthetic reaction of the platinum reagent with the diamino oligothymidine generates the diamino dichloro platinum-DNA conjugate that can be used for DNA duplex targeting by oligodeoxyncleotide-mediated triplex formation. The dT(8) sequence is not sufficiently long to facilitate triplex formation and Pt-cross-linking, whereas with a dT(15) sequence cross-linking between the third strand and the duplex occurs exclusively with the duplex target strand directly involved in triplex formation. No examples of cross-linking to the complementary target strand, or of cross-linking to both target strands are observed. Most efficient cross-linking occurs when the dinucleotide d(GpG) is present in the target strand and no cross-linking occurs with the corresponding 7-deazaG dinucleotide target. Cross-linking is also observed when dC or dA residues are present in the target strand, or even with a single dG residue, but it is not observed in any cases to dT residues. Triplex formation provides the ability to target specific sequences of double-stranded DNA and the orientational control arising from triplex formation is sufficient to alter the binding preferences of platinum. Conjugates of the type described here offer the potential of delivering a platinum complex to a specific DNA site.
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Affiliation(s)
- Sunil K Sharma
- Department of Chemistry, University of Delhi, Delhi 110 007, India
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14
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Heinze K, Bueno Toro J. Solid- and Solution-Phase Synthesis of a Library of Mixed-Metal Complexes. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400244] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Leadbeater NE, Sharp EL. Preparation of Resin-Bound Metal Carbonyl Reagents and Preliminary Demonstration of Their Use. Organometallics 2003. [DOI: 10.1021/om034072l] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Emma L. Sharp
- Department of Chemistry, King's College London, Strand, London, WC2R 2LS United Kingdom
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16
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Virta P, Katajisto J, Niittymäki T, Lönnberg H. Solid-supported synthesis of oligomeric bioconjugates. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00704-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Schmidt KS, Boudvillain M, Schwartz A, van der Marel GA, van Boom JH, Reedijk J, Lippert B. Monofunctionally trans-diammine platinum(II)-modified peptide nucleic acid oligomers: a new generation of potential antisense drugs. Chemistry 2002; 8:5566-70. [PMID: 12458496 DOI: 10.1002/1521-3765(20021216)8:24<5566::aid-chem5566>3.0.co;2-#] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A solid-phase approach is described that provides facile access to monofunctionally trans-PtII-modified PNA oligomers of arbitrary sequence for potential use both in antigene and antisense strategies. The approach includes the synthesis of a platinated building block 1 and its subsequent incorporation into three different PNA oligomers 5-7 by solid-phase synthesis. In a model cross-linking reaction one of the latter is found to recognize sequence-specifically a target oligonucleotide 8 and to cross-link to it. The resulting structure is the trans-PtII-cross-linked PNA/DNA duplex 9 as revealed by mass spectrometry in combination with a Maxam-Gilbert sequencing experiment.
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Affiliation(s)
- Kathrin S Schmidt
- Fachbereich Chemie, Universität Dortmund Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
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