1
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Saeed HK, Jarman PJ, Sreedharan S, Mowll R, Auty AJ, Chauvet AAP, Smythe CGW, de la Serna JB, Thomas JA. From Chemotherapy to Phototherapy - Changing the Therapeutic Action of a Metallo-Intercalating Ru II -Re I Luminescent System by Switching its Sub-Cellular Location. Chemistry 2023; 29:e202300617. [PMID: 37013945 PMCID: PMC10946911 DOI: 10.1002/chem.202300617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/28/2023] [Accepted: 04/04/2023] [Indexed: 04/05/2023]
Abstract
The synthesis of a new heterodinuclear ReI RuII metallointercalator containing RuII (dppz) and ReI (dppn) moieties is reported. Cell-free studies reveal that the complex has similar photophysical properties to its homoleptic M(dppz) analogue and it also binds to DNA with a similar affinity. However, the newly reported complex has very different in-cell properties to its parent. In complete contrast to the homoleptic system, the RuII (dppz)/ReI (dppn) complex is not intrinsically cytotoxic but displays appreciable phototoxic, despite both complexes displaying very similar quantum yields for singlet oxygen sensitization. Optical microscopy suggests that the reason for these contrasting biological effects is that whereas the homoleptic complex localises in the nuclei of cells, the RuII (dppz)/ReI (dppn) complex preferentially accumulates in mitochondria. These observations illustrate how even small structural changes in metal based therapeutic leads can modulate their mechanism of action.
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Affiliation(s)
- Hiwa K. Saeed
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | - Paul J. Jarman
- Department of Biomedical ScienceUniversity of SheffieldSheffieldS10 2TNUK
| | - Sreejesh Sreedharan
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
- School of Human ScienceUniversity of DerbyDerbyDE22 1GBUK
| | - Rachel Mowll
- Department of Biomedical ScienceUniversity of SheffieldSheffieldS10 2TNUK
| | | | | | - Carl G. W. Smythe
- Department of Biomedical ScienceUniversity of SheffieldSheffieldS10 2TNUK
| | - Jorge Bernardino de la Serna
- Faculty of MedicineNational Heart and Lung InstituteImperial CollegeLondonSW7 2AZUK
- Central Laser FacilityRutherford Appleton LaboratoryMRC-Research Complex at Harwell Science and Technology Facilities CouncilHarwellOX11 0FAUK
| | - Jim A. Thomas
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
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2
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Smitten K, Southam HM, Fairbanks S, Graf A, Chauvet A, Thomas JA. Clearing an ESKAPE Pathogen in a Model Organism; A Polypyridyl Ruthenium(II) Complex Theranostic that Treats a Resistant Acinetobacter baumannii Infection in Galleria mellonella. Chemistry 2023; 29:e202203555. [PMID: 36420820 PMCID: PMC10946903 DOI: 10.1002/chem.202203555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022]
Abstract
In previous studies we have described the therapeutic action of luminescent dinuclear ruthenium(II) complexes based on the tetrapyridylphenazine, tpphz, bridging ligand on pathogenic strains of Escherichia coli and Enterococcus faecalis. Herein, the antimicrobial activity of the complex against pernicious Gram-negative ESKAPE pathogenic strains of Acinetobacter baumannii (AB12, AB16, AB184 and AB210) and Pseudomonas aeruginosa (PA2017, PA_ 007_ IMP and PA_ 004_ CRCN) are reported. Estimated minimum inhibitory concentrations and minimum bactericidal concentrations for the complexes revealed the complex shows potent activity against all A. baumannii strains, in both glucose defined minimal media and standard nutrient rich Mueller-Hinton-II. Although the activity was lower in P. aureginosa, a moderately high potency was observed and retained in carbapenem-resistant strains. Optical microscopy showed that the compound is rapidly internalized by A. baumannii. As previous reports had revealed the complex exhibited no toxicity in Galleria Mellonella up to concentrations of 80 mg/kg, the ability to clear pathogenic infection within this model was explored. The pathogenic concentrations to the larvae for each bacterium were determined to be≥105 for AB184 and≥103 CFU/mL for PA2017. It was found a single dose of the compound totally cleared a pathogenic A. baumannii infection from all treated G. mellonella within 96 h. Uniquely, in these conditions thanks to the imaging properties of the complex the clearance of the bacteria within the hemolymph of G. mellonella could be directly visualized through both optical and transmission electron microscopy.
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Affiliation(s)
- Kirsty Smitten
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | | | - Simon Fairbanks
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | - Arthur Graf
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | - Adrien Chauvet
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | - Jim A Thomas
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
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3
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Ma X, Lu J, Yang P, Huang B, Li R, Ye R. Synthesis, Characterization and Antitumor Mechanism Investigation of Heterometallic Ru(Ⅱ)-Re(Ⅰ) Complexes. Front Chem 2022; 10:890925. [PMID: 35711955 PMCID: PMC9196629 DOI: 10.3389/fchem.2022.890925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/09/2022] [Indexed: 11/17/2022] Open
Abstract
The development of heteronuclear metal complexes as potent anticancer agents has received increasing attention in recent years. In this study, two new heteronuclear Ru(Ⅱ)-Re(Ⅰ) metal complexes, [Ru(bpy)2LRe(CO)3(DIP)](PF6)3 and [Ru(phen)2LRe(CO)3(DIP)](PF6)3 [RuRe-1 and RuRe-2, L = 2-(4-pyridinyl)imidazolio[4,5-f][1,10]phenanthroline, bpy = 2,2′-bipyridine, DIP = 4,7-diphenyl-1,10-phenanthroline, phen = 1,10-phenanthroline], were synthesized and characterized. Cytotoxicity assay shows that RuRe-1 and RuRe-2 exhibit higher anticancer activity than cisplatin, and exist certain selectivity toward human cancer cells over normal cells. The anticancer mechanistic studies reveal that RuRe-1 and RuRe-2 can induce apoptosis through the regulation of cell cycle, depolarization of mitochondrial membrane potential (MMP), elevation of intracellular reactive oxygen species (ROS), and caspase cascade. Moreover, RuRe-1 and RuRe-2 can effectively inhibit cell migration and colony formation. Taken together, heteronuclear Ru(Ⅱ)-Re(Ⅰ) metal complexes possess the prospect of developing new anticancer agents with high efficacy.
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Affiliation(s)
- Xiurong Ma
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Junjian Lu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Peixin Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Bo Huang
- Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, China
- *Correspondence: Bo Huang, ; Ruirong Ye,
| | - Rongtao Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Ruirong Ye
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- *Correspondence: Bo Huang, ; Ruirong Ye,
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Huang Z, Wilson JJ. Therapeutic and Diagnostic Applications of Multimetallic Rhenium(I) Tricarbonyl Complexes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100031] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhouyang Huang
- Department of Chemistry and Chemical Biology Cornell University Ithaca NY 14853 USA
| | - Justin J. Wilson
- Department of Chemistry and Chemical Biology Cornell University Ithaca NY 14853 USA
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5
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Li F, Li S, Guo X, Dong Y, Yao C, Liu Y, Song Y, Tan X, Gao L, Yang D. Chiral Carbon Dots Mimicking Topoisomerase I To Mediate the Topological Rearrangement of Supercoiled DNA Enantioselectively. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002904] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Li
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Shuai Li
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Xiaocui Guo
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Yuhang Dong
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Chi Yao
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Lizeng Gao
- CAS Engineering Laboratory for NanozymeInstitute of BiophysicsChinese Academy of Sciences Beijing 100101 P. R. China
| | - Dayong Yang
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
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6
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Li F, Li S, Guo X, Dong Y, Yao C, Liu Y, Song Y, Tan X, Gao L, Yang D. Chiral Carbon Dots Mimicking Topoisomerase I To Mediate the Topological Rearrangement of Supercoiled DNA Enantioselectively. Angew Chem Int Ed Engl 2020; 59:11087-11092. [DOI: 10.1002/anie.202002904] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Feng Li
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Shuai Li
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Xiaocui Guo
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Yuhang Dong
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Chi Yao
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and DiagnosticsSchool of PharmacyTianjin Medical University Tianjin 300070 P. R. China
| | - Lizeng Gao
- CAS Engineering Laboratory for NanozymeInstitute of BiophysicsChinese Academy of Sciences Beijing 100101 P. R. China
| | - Dayong Yang
- Frontier Science Center for Synthetic BiologyKey Laboratory of Systems Bioengineering (MOE)School of Chemical Engineering and TechnologyTianjin University Tianjin 300350 P. R. China
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7
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Hajji L, Saraiba-Bello C, Segovia-Torrente G, Scalambra F, Romerosa A. CpRu Complexes Containing Water Soluble Phosphane PTA and Natural Purines Adenine, Guanine and Theophylline: Synthesis, Characterization, and Antiproliferative Properties. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lazhar Hajji
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Cristobal Saraiba-Bello
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Gaspar Segovia-Torrente
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
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8
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Rodríguez-Corrales JÁ, Wang J, Winkel BSJ, Brewer KJ. Mechanistic Investigation into DNA Modification by a Ru II ,Rh III Bimetallic Complex. Chembiochem 2018; 19:2216-2224. [PMID: 30088850 DOI: 10.1002/cbic.201800369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Indexed: 11/09/2022]
Abstract
Despite significant progress in the treatment of cancer, there remains an urgent need for more effective therapies that also have less impact on patient wellbeing. Photodynamic therapy employs targeted light activation of a photosensitizer in selected tissues, thereby reducing off-target toxicity. Our group previously reported a RuII ,RhIII bimetallic architecture that displays multifunctional covalent photomodification of DNA in the therapeutic window in an oxygen-independent manner, features that are essential for treating deep and hypoxic tumors. Herein, we explore the mechanism by which a new analogue, [(phen)2 Ru(dpp)Rh(phen)Cl2 ]3+ , or RuII -RhIII , interacts with DNA. We established that RuII -RhIII exhibits "light switch" behavior in the presence of DNA, undergoing strong electrostatic interactions that might involve groove binding. Furthermore, these noncovalent interactions play a major role in the covalent photobinding and photocleavage of DNA, which occur according to an oxygen-independent mechanism. Polymerase chain reaction (PCR) revealed that covalent modification of DNA by RuII -RhIII , especially photobinding, is critical to inhibiting amplification, thus suggesting that the complex could exert its toxic activity by interfering with DNA replication in cells. This new structural motif, with phenanthroline at all three terminal ligand positions, has a number of properties that are promising for the continued refinement of photodynamic-therapy strategies.
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Affiliation(s)
| | - Jing Wang
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061-0212, USA
| | - Brenda S J Winkel
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, 24061-0212, USA
| | - Karen J Brewer
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061-0212, USA
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9
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Saeed HK, Jarman PJ, Archer S, Sreedharan S, Saeed IQ, Mckenzie LK, Weinstein JA, Buurma NJ, Smythe CGW, Thomas JA. Homo‐ and Heteroleptic Phototoxic Dinuclear Metallo‐Intercalators Based on Ru
II
(dppn) Intercalating Moieties: Synthesis, Optical, and Biological Studies. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hiwa K. Saeed
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | - Paul J. Jarman
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | - Stuart Archer
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | | | - Ibrahim Q. Saeed
- Physical Organic Chemistry Centre School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Luke K. Mckenzie
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | | | - Niklaas J. Buurma
- Physical Organic Chemistry Centre School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Carl G. W. Smythe
- Department of Biomedical Science University of Sheffield Sheffield S10 2TN UK
| | - Jim A. Thomas
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
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10
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Saeed HK, Jarman PJ, Archer S, Sreedharan S, Saeed IQ, Mckenzie LK, Weinstein JA, Buurma NJ, Smythe CGW, Thomas JA. Homo‐ and Heteroleptic Phototoxic Dinuclear Metallo‐Intercalators Based on Ru
II
(dppn) Intercalating Moieties: Synthesis, Optical, and Biological Studies. Angew Chem Int Ed Engl 2017; 56:12628-12633. [DOI: 10.1002/anie.201707350] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Hiwa K. Saeed
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | - Paul J. Jarman
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | - Stuart Archer
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | | | - Ibrahim Q. Saeed
- Physical Organic Chemistry Centre School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Luke K. Mckenzie
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | | | - Niklaas J. Buurma
- Physical Organic Chemistry Centre School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Carl G. W. Smythe
- Department of Biomedical Science University of Sheffield Sheffield S10 2TN UK
| | - Jim A. Thomas
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
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11
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Saeed HK, Saeed IQ, Buurma NJ, Thomas JA. The Structure of Linkers Affects the DNA Binding Properties of Tethered Dinuclear Ruthenium(II) Metallo-Intercalators. Chemistry 2017; 23:5467-5477. [PMID: 28072487 DOI: 10.1002/chem.201605750] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Indexed: 12/12/2022]
Abstract
With the long-term aim of enhancing the binding properties of dinuclear RuII -based DNA light-switch complexes, a series of eight structurally related mono- and dinuclear systems are reported in which the linker of the bridging ligand has been modulated. These tethered systems have been designed to explore issues of steric demand at the binding site and the thermodynamic cost of entropy loss upon binding. Detailed spectroscopic and isothermal titration calorimetry (ITC) studies on the new complexes reveal that one of the linkers produces a dinuclear system that binds to duplex DNA with an affinity (Kb >107 m-1 ) that is higher than its corresponding monometallic complex and is the highest affinity for a non-threading bis-intercalating metal complex. These studies confirm that the tether has a major effect on the binding properties of dinuclear complexes containing intercalating units and establishes key design rules for the construction of dinuclear complexes with enhanced DNA binding characteristics.
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Affiliation(s)
- Hiwa K Saeed
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Ibrahim Q Saeed
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building Park Place, Cardiff, CF10 3AT, UK
| | - Niklaas J Buurma
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building Park Place, Cardiff, CF10 3AT, UK
| | - Jim A Thomas
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
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12
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Substitution effects on the properties of 10,13-disubstituted dipyrido[3,2-a:2′,3′-c]phenazine donor–acceptor compounds and their ruthenium(II) complexes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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13
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Ahmad H, Wragg A, Cullen W, Wombwell C, Meijer AJHM, Thomas JA. From Intercalation to Groove Binding: Switching the DNA-Binding Mode of Isostructural Transition-Metal Complexes. Chemistry 2014; 20:3089-96. [DOI: 10.1002/chem.201304053] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 12/10/2013] [Indexed: 11/06/2022]
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14
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Sampath K, Sathiyaraj S, Jayabalakrishnan C. Synthesis, Spectroscopic Studies of Binuclear Ruthenium(II) Carbonyl Thiosemicarba-zone Complexes Containing PPh 3/AsPh 3as Co-ligands: DNA Binding/Cleavage. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Walker MG, Gonzalez V, Chekmeneva E, Thomas JA. Temperature-Switched Binding of a RuII(dppz)/DNA Light-Switch Complex. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Walker MG, Gonzalez V, Chekmeneva E, Thomas JA. Temperature-switched binding of a RuII (dppz)/DNA light-switch complex. Angew Chem Int Ed Engl 2012; 51:12107-10. [PMID: 23081806 DOI: 10.1002/anie.201206260] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Michael G Walker
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
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17
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Trovato E, Di Pietro ML, Puntoriero F. Shining a New Light on an Old Game - An OsII-Based Near-IR Light Switch. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200787] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Zhou P, Zheng Z, Lu W, Zhang F, Zhang Z, Pang D, Hu B, He Z, Wang H. Multicolor Labeling of Living-Virus Particles in Live Cells. Angew Chem Int Ed Engl 2011; 51:670-4. [PMID: 22135093 DOI: 10.1002/anie.201105701] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 10/12/2011] [Indexed: 01/03/2023]
Affiliation(s)
- Peng Zhou
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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19
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Zhou P, Zheng Z, Lu W, Zhang F, Zhang Z, Pang D, Hu B, He Z, Wang H. Multicolor Labeling of Living-Virus Particles in Live Cells. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105701] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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20
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Lo KK, Zhang KY, Li SP. Recent Exploitation of Luminescent Rhenium(I) Tricarbonyl Polypyridine Complexes as Biomolecular and Cellular Probes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100469] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kenneth Kam‐Wing Lo
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China, Fax: +852‐3442‐0522
| | - Kenneth Yin Zhang
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China, Fax: +852‐3442‐0522
| | - Steve Po‐Yam Li
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China, Fax: +852‐3442‐0522
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21
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Ghosh A, Das P, Gill MR, Kar P, Walker MG, Thomas JA, Das A. Photoactive RuII-Polypyridyl Complexes that Display Sequence Selectivity and High-Affinity Binding to Duplex DNA through Groove Binding. Chemistry 2011; 17:2089-98. [DOI: 10.1002/chem.201002149] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 09/07/2010] [Indexed: 11/11/2022]
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22
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Waywell P, Gonzalez V, Gill MR, Adams H, Meijer AJHM, Williamson MP, Thomas JA. Structure of the complex of [Ru(tpm)(dppz)py](2+) with a B-DNA oligonucleotide - a single-substituent binding switch for a metallo-intercalator. Chemistry 2010; 16:2407-17. [PMID: 20108276 DOI: 10.1002/chem.200901758] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We report the synthesis of three new complexes related to the achiral [Ru(tpm)(dppz)py](2+) cation (tpm=tripyridazole methane, dppz=dipyrido[3,2-a:2',3'-c]phenazine, py=pyridine) that contain an additional single functional group on the monodentate ancillary pyridyl ligand. Computational calculations indicate that the coordinated pyridyl rings are in a fixed orientation parallel to the dppz axis, and that the electrostatic properties of the complexes are very similar. DNA binding studies on the new complexes reveal that the nature and positioning of the functional group has a profound effect on the binding mode and affinity of these complexes. To explore the molecular and structural basis of these effects, circular dichroism and NMR studies on [Ru(tpm)(dppz)py]Cl(2) with the octanucleotides d(AGAGCTCT)(2) and d(CGAGCTCG)(2), were carried out. These studies demonstrate that the dppz ligand intercalates into the G(2)-A(3) step, with {Ru(tpm)py} in the minor groove. They also reveal that the complex intercalates into the binding site in two possible orientations with the pyridyl ligand of the major conformer making close contact with terminal base pairs. We conclude that substitution at the 2- or 3-position of the pyridine ring has little effect on binding, but that substitution at the 4-position drastically disrupts intercalative binding, particularly with a 4-amino substituent, because of steric and electronic interactions with the DNA. These results indicate that complexes derived from these systems have the potential to function as sequence-specific light-switch systems.
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Affiliation(s)
- Philip Waywell
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
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