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Lee LCC, Lo KKW. Shining New Light on Biological Systems: Luminescent Transition Metal Complexes for Bioimaging and Biosensing Applications. Chem Rev 2024. [PMID: 39052606 DOI: 10.1021/acs.chemrev.3c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Luminescence imaging is a powerful and versatile technique for investigating cell physiology and pathology in living systems, making significant contributions to life science research and clinical diagnosis. In recent years, luminescent transition metal complexes have gained significant attention for diagnostic and therapeutic applications due to their unique photophysical and photochemical properties. In this Review, we provide a comprehensive overview of the recent development of luminescent transition metal complexes for bioimaging and biosensing applications, with a focus on transition metal centers with a d6, d8, and d10 electronic configuration. We elucidate the structure-property relationships of luminescent transition metal complexes, exploring how their structural characteristics can be manipulated to control their biological behavior such as cellular uptake, localization, biocompatibility, pharmacokinetics, and biodistribution. Furthermore, we introduce the various design strategies that leverage the interesting photophysical properties of luminescent transition metal complexes for a wide variety of biological applications, including autofluorescence-free imaging, multimodal imaging, organelle imaging, biological sensing, microenvironment monitoring, bioorthogonal labeling, bacterial imaging, and cell viability assessment. Finally, we provide insights into the challenges and perspectives of luminescent transition metal complexes for bioimaging and biosensing applications, as well as their use in disease diagnosis and treatment evaluation.
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Affiliation(s)
- Lawrence Cho-Cheung Lee
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F, Building 17W, Hong Kong Science Park, New Territories, Hong Kong, P. R. China
| | - Kenneth Kam-Wing Lo
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
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2
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Jordan R, Schäfer SA, Sander N, Maisuls I, Hamacher C, Friedel J, Strassert CA, Klein A. Assessing the Character of the C 6F 5 Ligand from the Electrochemical and Photophysical Properties of [Ni(C 6F 5) 2(N ∧N)] Complexes. Inorg Chem 2024; 63:11079-11091. [PMID: 38843524 DOI: 10.1021/acs.inorgchem.4c00649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Organonickel complexes containing α-diimine ligands [Ni(C6F5)2(N∧N)] (N∧N = 2,2'-bipyridine (bpy), 2,9-dimethyl-1,10-phenanthroline (dmphen), 3,4,7,8-tetramethyl-1,10-phenanthroline (tmphen), dipyrido[3,2-a:2',3'-c]phenazine (dppz), 1,4-bis(isopropyl)-1,4-diazabutadiene (iPr-DAB), and 1,4-bis(2,6-dimethylphenyl)-1,4-diazabutadiene (Xyl-DAB) were prepared and studied structurally, spectroscopically, and electrochemically. Their molecular structures from single-crystal X-ray diffraction show near-perfect square planar Ni(II) coordination except in the case of dmphen. Primary reversible electrochemical reductions in the range from -1 to -2 V vs ferrocene/ferrocenium couple lead to mainly diimine-localized radical anion complexes, while secondary reductions in the range from -2 to -2.5 V lead to dianion complexes, as shown through spectroelectrochemistry. Irreversible metal-centered oxidations at around 0.7 V result in rapid aryl-aryl reductive elimination and formation of decafluorobiphenyl. No photoluminescence was detected for the complexes containing chromophoric α-diimine ligands at room temperature. At 77 K in frozen glassy 2-Me-THF matrices, weak photoluminescence was detected for the dmphen and tmphen derivatives, with broad emission bands peaking around 570 nm. All results are rationalized with the support of (TD-)DFT calculations, highlighting the role of the C6F5 ligand in different systems.
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Affiliation(s)
- Rose Jordan
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
| | - Sascha A Schäfer
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
| | - Noah Sander
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
| | - Ivan Maisuls
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany
- CeNTech, CiMIC, SoN, Heisenbergstraße 11, 48149 Münster, Germany
| | - Claudia Hamacher
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
| | - Joshua Friedel
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany
- CeNTech, CiMIC, SoN, Heisenbergstraße 11, 48149 Münster, Germany
| | - Axel Klein
- Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne, Faculty for Mathematics and Natural Sciences, Greinstrasse 6, D-50939 Köln, Germany
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Aderinto SO, John T, Onawole A, Galleh RP, Thomas JA. Iridium(III)-based minor groove binding complexes as DNA photocleavage agents. Dalton Trans 2024; 53:7282-7291. [PMID: 38466178 DOI: 10.1039/d4dt00171k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Transition metal complexes containing the qtpy ligand (2':4,4'':4',4'''-quaterpyridyl) are known to be DNA intercalators or minor groove binders. In this study, new tricationic iridium(III) complexes of qtpy are reported. Both [Ir(bpy)2(qtpy)]3+1 and [Ir(phen)2(qtpy)]3+2 display good water solubility as chloride salts. The complexes possess high-energy excited states, which are quenched in the presence of duplex DNA and even by the mononucleotides guanosine monophosphate and adenosine monophosphate. Further studies reveal that although the complexes bind to quadruplex DNA, they display a preference for duplex structures, which are bound with an order of magnitude higher affinities than their isostructural dicationic RuII-analogues. Detailed molecular dynamics simulations confirm that the complexes are groove binders through the insertion of, predominantly, the qtpy ligand into the minor groove. Photoirradiation of 1 in the presence of plasmid DNA confirms that this class of complexes can function as synthetic photonucleases by cleaving DNA.
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Affiliation(s)
- Stephen O Aderinto
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
| | - Torsten John
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Abdulmujeeb Onawole
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia
| | | | - Jim A Thomas
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
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Stitch M, Avagliano D, Graczyk D, Clark IP, González L, Towrie M, Quinn SJ. Good Vibrations Report on the DNA Quadruplex Binding of an Excited State Amplified Ruthenium Polypyridyl IR Probe. J Am Chem Soc 2023; 145:21344-21360. [PMID: 37736878 PMCID: PMC10557146 DOI: 10.1021/jacs.3c06099] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Indexed: 09/23/2023]
Abstract
The nitrile containing Ru(II)polypyridyl complex [Ru(phen)2(11,12-dCN-dppz)]2+ (1) is shown to act as a sensitive infrared probe of G-quadruplex (G4) structures. UV-visible absorption spectroscopy reveals enantiomer sensitive binding for the hybrid htel(K) and antiparallel htel(Na) G4s formed by the human telomer sequence d[AG3(TTAG3)3]. Time-resolved infrared (TRIR) of 1 upon 400 nm excitation indicates dominant interactions with the guanine bases in the case of Λ-1/htel(K), Δ-1/htel(K), and Λ-1/htel(Na) binding, whereas Δ-1/htel(Na) binding is associated with interactions with thymine and adenine bases in the loop. The intense nitrile transient at 2232 cm-1 undergoes a linear shift to lower frequency as the solution hydrogen bonding environment decreases in DMSO/water mixtures. This shift is used as a sensitive reporter of the nitrile environment within the binding pocket. The lifetime of 1 in D2O (ca. 100 ps) is found to increase upon DNA binding, and monitoring of the nitrile and ligand transients as well as the diagnostic DNA bleach bands shows that this increase is related to greater protection from the solvent environment. Molecular dynamics simulations together with binding energy calculations identify the most favorable binding site for each system, which are in excellent agreement with the observed TRIR solution study. This study shows the power of combining the environmental sensitivity of an infrared (IR) probe in its excited state with the TRIR DNA "site effect" to gain important information about the binding site of photoactive agents and points to the potential of such amplified IR probes as sensitive reporters of biological environments.
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Affiliation(s)
- Mark Stitch
- School
of Chemistry, University College Dublin, Dublin, D04 V1W8, Ireland
| | - Davide Avagliano
- Institute
of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währingerstr. 19, 1090 Vienna, Austria
- Department
of Chemistry, Chemical Physics Theory Group, University of Toronto, 80 St. George St., Toronto, Ontario M5S 3H6, Canada
| | - Daniel Graczyk
- School
of Chemistry, University College Dublin, Dublin, D04 V1W8, Ireland
| | - Ian P. Clark
- Central
Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Leticia González
- Institute
of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währingerstr. 19, 1090 Vienna, Austria
- Vienna
Research Platform on Accelerating Photoreaction Discovery, University of Vienna, Währingerstr. 19, 1090 Vienna, Austria
| | - Michael Towrie
- Central
Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Susan J Quinn
- School
of Chemistry, University College Dublin, Dublin, D04 V1W8, Ireland
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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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Lee LCC, Lo KKW. Luminescent and Photofunctional Transition Metal Complexes: From Molecular Design to Diagnostic and Therapeutic Applications. J Am Chem Soc 2022; 144:14420-14440. [PMID: 35925792 DOI: 10.1021/jacs.2c03437] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
There has been emerging interest in the exploitation of the photophysical and photochemical properties of transition metal complexes for diagnostic and therapeutic applications. In this Perspective, we highlight the major recent advances in the development of luminescent and photofunctional transition metal complexes, in particular, those of rhenium(I), ruthenium(II), osmium(II), iridium(III), and platinum(II), as bioimaging reagents and phototherapeutic agents, with a focus on the molecular design strategies that harness and modulate the interesting photophysical and photochemical behavior of the complexes. We also discuss the current challenges and future outlook of transition metal complexes for both fundamental research and clinical applications.
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Affiliation(s)
- Lawrence Cho-Cheung Lee
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P.R. China.,Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F, Building 17W, Hong Kong Science Park, New Territories, Hong Kong, P.R. China
| | - Kenneth Kam-Wing Lo
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P.R. China.,State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P.R. China
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7
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The silver-mediated annulation of arylcarbamic acids and nitrosoarenes toward phenazines. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Isakov D, Schmid MA, Nauroozi D, Rau S, Tschierlei S. Prolonged Luminescence Lifetime of a Dual Emissive Ruthenium Dipyridophenazine-Type Complex in Aprotic and Protic Solvents. Inorg Chem 2021; 60:14002-14010. [PMID: 34495655 DOI: 10.1021/acs.inorgchem.1c01214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A recently reported ruthenium(II) complex bearing an extended dipyridophenazine ligand exhibits unusual long-lived dual emission at room temperature. In this study, the effect of the introduction of a methyl protecting group to the imidazole moiety of this ligand (L1, 11-methyl-11H-imidazo[4,5-i]dipyrido[3,2-a:2',3'-c]phenazine) on the photophysics of the respective ruthenium(II) complex [(tbbpy)2Ru(L1)]2+ (C1) is demonstrated by means of electrochemistry, UV/vis absorption and emission spectroscopy, as well as emission lifetime measurements, and transient absorption spectroscopy on the nanosecond time scale. At room temperature, C1 shows dual emission both in aprotic and in protic solvents with time constants of 1.1/34.2 and 1.2/8.4 μs, respectively. These lifetimes are assigned to the emission from 3MLCT and 3LC states. The introduction of the methyl group increases the lifetime of the 3LC state in C1 almost by a factor of 2 in acetonitrile solution compared to the previously reported compound. Accordingly, the newly introduced methyl group is described as a protecting group for the imidazole moiety of the heterocyclic ligand, which enables prolonged lifetimes of the dual emissive complex in protic solvents. The stabilization of the electronic structure is further underlined by the enhanced stability toward electrochemical reduction as evidenced by cyclic voltammetry.
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Affiliation(s)
- Dajana Isakov
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Marie-Ann Schmid
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Gaußstraße 17, 38106 Braunschweig, Germany
| | - Djawed Nauroozi
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Stefanie Tschierlei
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Gaußstraße 17, 38106 Braunschweig, Germany
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9
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Newton MD, Fairbanks SD, Thomas JA, Rueda DS. A Minimal Load‐and‐Lock Ru
II
Luminescent DNA Probe. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Matthew D. Newton
- Department of Infectious Disease Faculty of Medicine Imperial College London London W12 0NN UK
- Single Molecule Imaging Group, MRC- London Institute of Medical Sciences London W12 0NN UK
| | - Simon D. Fairbanks
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
- Department of Molecular Biology and Biotechnology University of Sheffield Western Bank Sheffield S10 2TN UK
| | - Jim A. Thomas
- Department of Chemistry University of Sheffield Sheffield S3 7HF UK
| | - David S. Rueda
- Department of Infectious Disease Faculty of Medicine Imperial College London London W12 0NN UK
- Single Molecule Imaging Group, MRC- London Institute of Medical Sciences London W12 0NN UK
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Newton MD, Fairbanks SD, Thomas JA, Rueda DS. A Minimal Load-and-Lock Ru II Luminescent DNA Probe. Angew Chem Int Ed Engl 2021; 60:20952-20959. [PMID: 34378843 PMCID: PMC8518596 DOI: 10.1002/anie.202108077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Indexed: 12/26/2022]
Abstract
Threading intercalators bind DNA with high affinities. Here, we describe single-molecule studies on a cell-permeant luminescent dinuclear ruthenium(II) complex that has been previously shown to thread only into short, unstable duplex structures. Using optical tweezers and confocal microscopy, we show that this complex threads and locks into force-extended duplex DNA in a two-step mechanism. Detailed kinetic studies reveal that an individual stereoisomer of the complex exhibits the highest binding affinity reported for such a mono-intercalator. This stereoisomer better preserves the biophysical properties of DNA than the widely used SYTOX Orange. Interestingly, threading into torsionally constrained DNA decreases dramatically, but is rescued on negatively supercoiled DNA. Given the "light-switch" properties of this complex on binding DNA, it can be readily used as a long-lived luminescent label for duplex or negatively supercoiled DNA through a unique "load-and-lock" protocol.
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Affiliation(s)
- Matthew D. Newton
- Department of Infectious DiseaseFaculty of MedicineImperial College LondonLondonW12 0NNUK
- Single Molecule Imaging Group, MRC-London Institute of Medical SciencesLondonW12 0NNUK
| | - Simon D. Fairbanks
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
- Department of Molecular Biology and BiotechnologyUniversity of SheffieldWestern BankSheffieldS10 2TNUK
| | - Jim A. Thomas
- Department of ChemistryUniversity of SheffieldSheffieldS3 7HFUK
| | - David S. Rueda
- Department of Infectious DiseaseFaculty of MedicineImperial College LondonLondonW12 0NNUK
- Single Molecule Imaging Group, MRC-London Institute of Medical SciencesLondonW12 0NNUK
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11
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Yin C, Wang Z, Ding X, Chen X, Wang J, Yang E, Wang W, Martin LL, Sun D. Crystalline ruthenium polypyridine nanoparticles: a targeted treatment of bacterial infection with multifunctional antibacterial, adhesion and surface-anchoring photosensitizer properties. J Mater Chem B 2021; 9:3808-3825. [PMID: 33979422 DOI: 10.1039/d1tb00103e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodynamic antibacterial therapy employs nanocomposites as an alternative to traditional antibiotics for the treatment of bacterial infections. However, many of these antibacterial materials are less effective towards bacteria than traditional drugs, either due to poor specificity or antibacterial activity. This can result in needless and excessive drug use in treatments. This paper describes a multifunctional drug delivery nanoparticle (MDD-NP), Sph-Ru-MMT@PZ, based on the nanostructured-form of [Ru(bpy)2dppz] (PF6)2 (Sph-Ru), which has adhesive properties towards its microbial targets as well as surface-anchoring photosensitizer effects. The design and construction of MDD-NP is based on the adhesive properties of the outer layers of montmorillonite (MMT), which allows Sph-Ru-MMT@PZ to successfully reach its bacterial target; the outer layer of the E. coli. In addition, under 670 nm red irradiation therapy (R-IT), the surface-anchoring properties use the photosensitizer phthalocyanine zinc (PZ) to destroy the bacteria by producing reactive oxygen species (ROS) which causes cell lysis of E. coli. More importantly, Sph-Ru-MMT@PZ has no fluorescence response to live E. coli with intact cell membranes but selectively stained and demonstrated fluorescence during membrane damage of early-stage cells as well as exposure of nuclear materials at late-stage of cell lysis. Sph-Ru-MMT@PZ showed beneficial and synergistic anti-infective effects in vivo by inhibiting the E. coli infection-induced inflammatory response and eventually promoting wound healing in mice. This new strategy for high precision antibacterial therapy towards specific targets, provides an exciting opportunity for the application of multifunctional nanocomposites towards microbial infections.
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Affiliation(s)
- Chenyang Yin
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Zekun Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Xiaoyuan Ding
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Xiaoqing Chen
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Jingyuan Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Endong Yang
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Weiyun Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| | - Lisandra L Martin
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia.
| | - Dongdong Sun
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
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12
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Maschietto F, Campetella M, Sanz García J, Adamo C, Ciofini I. Chasing unphysical TD-DFT excited states in transition metal complexes with a simple diagnostic tool. J Chem Phys 2021; 154:204102. [PMID: 34241186 DOI: 10.1063/5.0050680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Transition Metal Complexes (TMCs) are known for the rich variety of their excited states showing different nature and degrees of locality. Describing the energies of these excited states with the same degree of accuracy is still problematic when using time-dependent density functional theory in conjunction with the most current density functional approximations. In particular, the presence of unphysically low lying excited states possessing a relevant Charge Transfer (CT) character may significantly affect the spectra computed at such a level of theory and, more relevantly, the interpretation of their photophysical behavior. In this work, we propose an improved version of the MAC index, recently proposed by the authors and collaborators, as a simple and computationally inexpensive diagnostic tool that can be used for the detection and correction of the unphysically predicted low lying excited states. The analysis, performed on five prototype TMCs, shows that spurious and ghost states can appear in a wide spectral range and that it is difficult to detect them only on the basis of their CT extent. Indeed, both delocalization of the excited state and CT extent are criteria that must be combined, as in the MAC index, to detect unphysical states.
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Affiliation(s)
- Federica Maschietto
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modelling, 75005 Paris, France
| | - Marco Campetella
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modelling, 75005 Paris, France
| | - Juan Sanz García
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modelling, 75005 Paris, France
| | - Carlo Adamo
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modelling, 75005 Paris, France
| | - Ilaria Ciofini
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modelling, 75005 Paris, France
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13
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Ultrafast excited state dynamics and light-switching of [Ru(phen) 2(dppz)] 2+ in G-quadruplex DNA. Commun Chem 2021; 4:68. [PMID: 36697709 PMCID: PMC9814642 DOI: 10.1038/s42004-021-00507-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/09/2021] [Indexed: 01/28/2023] Open
Abstract
The triplet metal to ligand charge transfer (3MLCT) luminescence of ruthenium (II) polypyridyl complexes offers attractive imaging properties, specifically towards the development of sensitive and structure-specific DNA probes. However, rapidly-deactivating dark state formation may compete with 3MLCT luminescence depending on different DNA structures. In this work, by combining femtosecond and nanosecond pump-probe spectroscopy, the 3MLCT relaxation dynamics of [Ru(phen)2(dppz)]2+ (phen = 1,10-phenanthroline, dppz = dipyridophenazine) in two iconic G-quadruplexes has been scrutinized. The binding modes of stacking of dppz ligand on the terminal G-quartet fully and partially are clearly identified based on the biexponential decay dynamics of the 3MLCT luminescence at 620 nm. Interestingly, the inhibited dark state channel in ds-DNA is open in G-quadruplex, featuring an ultrafast picosecond depopulation process from 3MLCT to a dark state. The dark state formation rates are found to be sensitive to the content of water molecules in local G-quadruplex structures, indicating different patterns of bound water. The unique excited state dynamics of [Ru(phen)2(dppz)]2+ in G-quadruplex is deciphered, providing mechanistic basis for the rational design of photoactive ruthenium metal complexes in biological applications.
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14
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Explaining the role of water in the “light-switch” probe for DNA intercalation: Modelling water loss from [Ru(phen)2(dppz)]2+•2H2O using DFT and TD-DFT methods. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Tisaun J, Laramée-Milette B, Beckwith JS, Bierwagen J, Hanan GS, Reber C, Hauser A, Moucheron C. Two Ru II Linkage Isomers with Distinctly Different Charge Transfer Photophysics. Inorg Chem 2021; 60:3677-3689. [PMID: 33621069 DOI: 10.1021/acs.inorgchem.0c03371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ligand PHEHAT (PHEHAT = 1,10-phenanthrolino[5,6-b]1,4,5,8,9,12-hexaazatriphenylene) presents a structural asymmetry that has a dramatic influence on the photophysical properties depending on the chelation site of the metal ion in the linkage isomers. While [RuII(phen)2HATPHE]2+ behaves classically, like [RuII(bpy)3]2+, [RuII(phen)2PHEHAT]2+ exhibits an unusual behavior. It appears that this complex has two 3MLCT bright states, the lower one being weakly emissive or nonemissive depending on the solvent and temperature. Different photophysical techniques involving a wide range of various temperatures and timescales are essential to analyze this difference. A full photophysical scheme is proposed based on experimental data and density functional theory calculations. While previous studies focused on high temperatures and longer timescale emission, we explore the complexes at very low temperatures and very short times in order to obtain a more complete picture of the intriguing photophysical behavior of these complexes.
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Affiliation(s)
- Jérôme Tisaun
- Chimie Organique et Photochimie CP 160/08, Université Libre de Bruxelles, Av. Franklin D. Roosevelt 50, 1050 Brussels, Belgium
| | - Baptiste Laramée-Milette
- Département de chimie, Université de Montréal, CP 6128, Succ. Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Joseph S Beckwith
- Physical Chemistry Department, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Jakob Bierwagen
- Physical Chemistry Department, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Garry S Hanan
- Département de chimie, Université de Montréal, CP 6128, Succ. Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Christian Reber
- Département de chimie, Université de Montréal, CP 6128, Succ. Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Andreas Hauser
- Physical Chemistry Department, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Cécile Moucheron
- Chimie Organique et Photochimie CP 160/08, Université Libre de Bruxelles, Av. Franklin D. Roosevelt 50, 1050 Brussels, Belgium
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16
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Larsen CB. Temperature and solvent-dependent photoluminescence quenching in [Ru(bpy) 2(bpy-cc-AQ)] 2. Phys Chem Chem Phys 2021; 23:3574-3580. [PMID: 33514966 DOI: 10.1039/d0cp05044j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
I have herein investigated the solvent-dependent photoluminescence quenching mechanism of [Ru(bpy)2(bpy-cc-AQ)]2+ using variable temperature emission spectroscopies. The photophysics of this complex are dominated by an excited-state thermal equilibrium between a photoluminescent 3MLCT state and a charge-separated state that lies higher in energy relative to the 3MLCT state in low polarity solvents and approximately isoenergetic in high polarity solvents. Furthermore, an unusual photoluminescence temperature-dependence in high polarity solvents is shown to arise from competition between enthalpic factors favouring the charge-separated state and entropic factors favouring the photoluminescent 3MLCT state, analogous to the molecular light-switch effect of [Ru(bpy)2(dppz)]2+. The solvent-dependent photoluminescence quenching of [Ru(bpy)2(bpy-cc-AQ)]2+ is attributed to two key solvent-dependent factors: (1) the excited-state equilibrium position and (2) the rate of charge-recombination from the charge-separated state.
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Affiliation(s)
- Christopher B Larsen
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
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17
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Hayashi Y, Morimoto A, Maeda T, Enoki T, Ooyama Y, Matsui Y, Ikeda H, Yagi S. Synthesis of novel π-extended D–A–D-type dipyrido[3,2- a:2′,3′- c]phenazine derivatives and their photosensitized singlet oxygen generation. NEW J CHEM 2021. [DOI: 10.1039/d0nj05526c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Electron donor–acceptor–donor (D–A–D) π-conjugated molecules based on dipyrido[3,2-a:2′,3′-c]phenazine (dppz) were developed as photosensitizers for singlet oxygen generation.
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Affiliation(s)
- Yuichiro Hayashi
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
| | - Ami Morimoto
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
| | - Takeshi Maeda
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
| | - Toshiaki Enoki
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
- Japan
| | - Yousuke Ooyama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
- Japan
| | - Yasunori Matsui
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
| | - Shigeyuki Yagi
- Department of Applied Chemistry, Graduate School of Engineering
- Osaka Prefecture University
- Japan
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18
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Keane PM, O'Sullivan K, Poynton FE, Poulsen BC, Sazanovich IV, Towrie M, Cardin CJ, Sun XZ, George MW, Gunnlaugsson T, Quinn SJ, Kelly JM. Understanding the factors controlling the photo-oxidation of natural DNA by enantiomerically pure intercalating ruthenium polypyridyl complexes through TA/TRIR studies with polydeoxynucleotides and mixed sequence oligodeoxynucleotides. Chem Sci 2020; 11:8600-8609. [PMID: 34123120 PMCID: PMC8163394 DOI: 10.1039/d0sc02413a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Ruthenium polypyridyl complexes which can sensitise the photo-oxidation of nucleic acids and other biological molecules show potential for photo-therapeutic applications. In this article a combination of transient visible absorption (TrA) and time-resolved infra-red (TRIR) spectroscopy are used to compare the photo-oxidation of guanine by the enantiomers of [Ru(TAP)2(dppz)]2+ in both polymeric {poly(dG-dC), poly(dA-dT) and natural DNA} and small mixed-sequence duplex-forming oligodeoxynucleotides. The products of electron transfer are readily monitored by the appearance of a characteristic TRIR band centred at ca. 1700 cm−1 for the guanine radical cation and a band centered at ca. 515 nm in the TrA for the reduced ruthenium complex. It is found that efficient electron transfer requires that the complex be intercalated at a G-C base-pair containing site. Significantly, changes in the nucleobase vibrations of the TRIR spectra induced by the bound excited state before electron transfer takes place are used to identify preferred intercalation sites in mixed-sequence oligodeoxynucleotides and natural DNA. Interestingly, with natural DNA, while it is found that quenching is inefficient in the picosecond range, a slower electron transfer process occurs, which is not found with the mixed-sequence duplex-forming oligodeoxynucleotides studied. Efficient electron transfer requires the complex to be intercalated at a G-C base-pair. Identification of preferred intercalation sites is achieved by TRIR monitoring of the nucleobase vibrations before electron transfer.![]()
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Affiliation(s)
- Páraic M Keane
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland .,School of Chemistry, University of Reading RG6 6AD UK
| | - Kyra O'Sullivan
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland
| | - Fergus E Poynton
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland .,Trinity Biomedical Sciences Institute, The University of Dublin Pearse St. Dublin 2 Ireland
| | - Bjørn C Poulsen
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland .,Trinity Biomedical Sciences Institute, The University of Dublin Pearse St. Dublin 2 Ireland
| | - Igor V Sazanovich
- Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratories OX11 0QX UK
| | - Michael Towrie
- Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratories OX11 0QX UK
| | | | - Xue-Zhong Sun
- School of Chemistry, University of Nottingham NG7 2RD UK
| | - Michael W George
- School of Chemistry, University of Nottingham NG7 2RD UK.,Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China 199 Taikang East Road Ningbo 315100 China
| | - Thorfinnur Gunnlaugsson
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland .,Trinity Biomedical Sciences Institute, The University of Dublin Pearse St. Dublin 2 Ireland
| | - Susan J Quinn
- School of Chemistry, University College Dublin Dublin 4 Ireland
| | - John M Kelly
- School of Chemistry, Trinity College Dublin, The University of Dublin Dublin 2 Ireland
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19
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Li S, Xu G, Zhu Y, Zhao J, Gou S. Bifunctional ruthenium(ii) polypyridyl complexes of curcumin as potential anticancer agents. Dalton Trans 2020; 49:9454-9463. [PMID: 32598409 DOI: 10.1039/d0dt01040e] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ru(ii)-polypyridyl complexes have been widely studied and well established for their antitumor properties. Modifications of the coordination environment around the Ru atom through a proper choice of the ligand can lead to different modes of action and result in greatly improved anticancer efficacy. Herein, two Ru(ii)-polypyridyl complexes of curcumin were synthesized and characterized as potential anticancer agents. In vitro tests indicated that complexes 1 and 2 displayed excellent antiproliferative activity against the tested cancer cell lines, especially complex 2, which exhibited superior cytotoxicity compared to curcumin and cisplatin. Further biological evaluations demonstrated that complexes 1 and 2 can cause cell apoptosis via DNA interaction and MEK/ERK signaling pathway, which is the first example of a Ru(ii)-polypyridyl complex inhibiting the MEK/ERK signaling pathway and DNA intercalation. Overall, this work suggests that coordination with bioactive agents may endow Ru(ii)-polypyridyl complexes with improved pharmaceutical properties and synergistic effects for cancer therapy.
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Affiliation(s)
- Shuang Li
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research and Pharmaceutical Research Center, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
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20
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Wahyuono RA, Amthor S, Müller C, Rau S, Dietzek B. Structure of Diethyl‐Phosphonic Acid Anchoring Group Affects the Charge‐Separated State on an Iridium(III) Complex Functionalized NiO Surface. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ruri Agung Wahyuono
- Department Functional InterfacesLeibniz Institute of Photonic Technology (IPHT) Jena e.V. Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical ChemistryFriedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
| | - Sebastian Amthor
- Institute of Inorganic Chemistry IUniversity Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Carolin Müller
- Department Functional InterfacesLeibniz Institute of Photonic Technology (IPHT) Jena e.V. Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical ChemistryFriedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
| | - Sven Rau
- Institute of Inorganic Chemistry IUniversity Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Benjamin Dietzek
- Department Functional InterfacesLeibniz Institute of Photonic Technology (IPHT) Jena e.V. Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical ChemistryFriedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
- Center for Energy and Environmental Chemistry (CEEC)Friedrich Schiller University Jena Philosophenweg 7a 07743 Jena Germany
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21
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Saeed HK, Sreedharan S, Jarman PJ, Archer SA, Fairbanks SD, Foxon SP, Auty AJ, Chekulaev D, Keane T, Meijer AJHM, Weinstein JA, Smythe CGW, Bernardino de la Serna J, Thomas JA. Making the Right Link to Theranostics: The Photophysical and Biological Properties of Dinuclear Ru II-Re I dppz Complexes Depend on Their Tether. J Am Chem Soc 2020; 142:1101-1111. [PMID: 31846306 DOI: 10.1021/jacs.9b12564] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The synthesis of new dinuclear complexes containing linked RuII(dppz) and ReI(dppz) moieties is reported. The photophysical and biological properties of the new complex, which incorporates a N,N'-bis(4-pyridylmethyl)-1,6-hexanediamine tether ligand, are compared to a previously reported RuII/ReI complex linked by a simple dipyridyl alkane ligand. Although both complexes bind to DNA with similar affinities, steady-state and time-resolved photophysical studies reveal that the nature of the linker affects the excited state dynamics of the complexes and their DNA photocleavage properties. Quantum-based DFT calculations on these systems offer insights into these effects. While both complexes are live cells permeant, their intracellular localizations are significantly affected by the nature of the linker. Notably, one of the complexes displayed concentration-dependent localization and possesses photophysical properties that are compatible with SIM and STED nanoscopy. This allowed the dynamics of its intracellular localization to be tracked at super resolutions.
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Affiliation(s)
| | | | | | | | | | - Simon P Foxon
- ZapGo, Limited , Rutherford Appleton Laboratory, Harwell , Oxford OX11 0FA , United Kingdom
| | | | | | | | | | | | | | - Jorge Bernardino de la Serna
- Central Laser Facility, Rutherford Appleton Laboratory , Research Complex at Harwell, Science and Technology Facilities Council , Harwell-Oxford , Didcot OX11 0QX , United Kingdom
- National Heart and Lung Institute, Faculty of Medicine , Imperial College London , Sir Alexander Fleming Building, Exhibition Road , London SW7 2AZ , United Kingdom
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22
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Oliveira GDFS, Gouveia FS, Pinheiro ADA, do Nascimento Neto LG, de Vasconcelos MA, Teixeira EH, Gondim ACS, Lopes LGDF, de Carvalho IMM, Sousa EHS. An anthracene-pendant ruthenium( ii) complex conjugated to a biotin anchor, an essential handle for photo-induced anti-cancer activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj00209g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Efficient avidin binding and selective cancer cell response upon light irradiation of an enhanced ROS photogenerator biotinylated ruthenium complex.
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Affiliation(s)
| | - Florencio Sousa Gouveia
- Group of Bioinorganic
- Department of Organic and Inorganic Chemistry
- Federal University of Ceará
- Fortaleza
- Brazil
| | - Aryane de Azevedo Pinheiro
- Laboratório Integrado de Biomoléculas
- Departamento de Patologia e Medicina Legal
- Universidade Federal do Ceará
- Fortaleza
- Brazil
| | | | - Mayron Alves de Vasconcelos
- Laboratório Integrado de Biomoléculas
- Departamento de Patologia e Medicina Legal
- Universidade Federal do Ceará
- Fortaleza
- Brazil
| | - Edson Holanda Teixeira
- Laboratório Integrado de Biomoléculas
- Departamento de Patologia e Medicina Legal
- Universidade Federal do Ceará
- Fortaleza
- Brazil
| | - Ana Claudia Silva Gondim
- Group of Bioinorganic
- Department of Organic and Inorganic Chemistry
- Federal University of Ceará
- Fortaleza
- Brazil
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23
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Isakov D, Giereth R, Nauroozi D, Tschierlei S, Rau S. Two Emissive Long-Lived Excited States of an Imidazole-Functionalized Ruthenium Dipyridophenazine Complex. Inorg Chem 2019; 58:12646-12653. [PMID: 31532651 DOI: 10.1021/acs.inorgchem.9b01372] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A ruthenium(II) polypyridine-type complex based on the dipyridophenazine ligand with a directly fused imidazole unit (L1, dipyrido[3,2-a:2',3'-c]phenazine-10,11-imidazole) has been synthesized, and its electrochemical and photophysical properties have been studied. The cyclic voltammogram of [Ru(tbbpy)2(L1)]2+ (C1) (tbbpy is 4,4'-tert-butyl-2,2'-bipyridine) shows a cathodic shift of the phenazine-based reduction process compared to similar molecules, while the first detected reduction wave (-1.34 V vs Fc/Fc+) is assigned to the imidazole unit within the molecule. On the basis of the TD-DFT calculations, the strong visible absorption band exhibited by C1 is assigned to a metal-to-ligand charge transfer (MLCT) transition with a concurrent ligand-centered (LC) transition. At room-temperature, C1 features emission (Φ = 0.04) from its lowest excited states with time constants of 1.2 and 18.3 μs. These lifetimes are assigned to emission processes from the 3MLCT and 3LC state, respectively. This is the first time that a long-lived dual emission has been observed for a ruthenium(II) complex bearing a directly fused extended π-system. Furthermore, the emission of C1 is quenched upon water addition. In contrast to related compounds based on a dipyridophenazine ligand, the excited state energy is not shifted, and the lifetime is drastically decreased to 169 ns.
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Affiliation(s)
- Dajana Isakov
- Ulm University , Institute of Inorganic Chemistry I , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Robin Giereth
- Ulm University , Institute of Inorganic Chemistry I , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Djawed Nauroozi
- Ulm University , Institute of Inorganic Chemistry I , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Stefanie Tschierlei
- Ulm University , Institute of Inorganic Chemistry I , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Sven Rau
- Ulm University , Institute of Inorganic Chemistry I , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
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24
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Mårtensson AKF, Abrahamsson M, Tuite EM, Lincoln P. Diastereomeric Crowding Effects in the Competitive DNA Intercalation of Ru(phenanthroline)2dipyridophenazine2+ Enantiomers. Inorg Chem 2019; 58:9452-9459. [DOI: 10.1021/acs.inorgchem.9b01298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anna K. F. Mårtensson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemigården 4, SE-412 96 Gothenburg, Sweden
| | - Maria Abrahamsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemigården 4, SE-412 96 Gothenburg, Sweden
| | - Eimer M. Tuite
- School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Per Lincoln
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemigården 4, SE-412 96 Gothenburg, Sweden
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25
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Smitten KL, Southam HM, de la Serna JB, Gill MR, Jarman PJ, Smythe CGW, Poole RK, Thomas JA. Using Nanoscopy To Probe the Biological Activity of Antimicrobial Leads That Display Potent Activity against Pathogenic, Multidrug Resistant, Gram-Negative Bacteria. ACS NANO 2019; 13:5133-5146. [PMID: 30964642 DOI: 10.1021/acsnano.8b08440] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Medicinal leads that are also compatible with imaging technologies are attractive, as they facilitate the development of therapeutics through direct mechanistic observations at the molecular level. In this context, the uptake and antimicrobial activities of several luminescent dinuclear RuII complexes against E. coli were assessed and compared to results obtained for another ESKAPE pathogen, the Gram-positive major opportunistic pathogen Enterococcus faecalis, V583. The most promising lead displays potent activity, particularly against the Gram-negative bacteria, and potency is retained in the uropathogenic multidrug resistant EC958 ST131 strain. Exploiting the inherent luminescent properties of this complex, super-resolution STED nanoscopy was used to image its initial localization at/in cellular membranes and its subsequent transfer to the cell poles. Membrane damage assays confirm that the complex disrupts the bacterial membrane structure before internalization. Mammalian cell culture and animal model studies indicate that the complex is not toxic to eukaryotes, even at concentrations that are several orders of magnitude higher than its minimum inhibitory concentration (MIC). Taken together, these results have identified a lead molecular architecture for hard-to-treat, multiresistant, Gram-negative bacteria, which displays activities that are already comparable to optimized natural product-based leads.
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Affiliation(s)
- Kirsty L Smitten
- Department of Chemistry , The University of Sheffield , Western Bank , Sheffield S3 7HF , U.K
| | - Hannah M Southam
- Department of Molecular Biology and Biotechnology , The University of Sheffield , Western Bank , Sheffield S10 2TN , U.K
| | - Jorge Bernardino de la Serna
- Central Laser Facility, Rutherford Appleton Laboratory, Research Complex at Harwell , Science and Technology Facilities Council , Harwell-Oxford , Didcot OX11 0QX , U.K
- Department of Physics , King's College London , London WC2R 2LS , U.K
| | - Martin R Gill
- Department of Chemistry , The University of Sheffield , Western Bank , Sheffield S3 7HF , U.K
| | - Paul J Jarman
- Department of Biomedical Science , The University of Sheffield , Western Bank , Sheffield S10 2TN , U.K
| | - Carl G W Smythe
- Department of Biomedical Science , The University of Sheffield , Western Bank , Sheffield S10 2TN , U.K
| | - Robert K Poole
- Department of Molecular Biology and Biotechnology , The University of Sheffield , Western Bank , Sheffield S10 2TN , U.K
| | - Jim A Thomas
- Department of Chemistry , The University of Sheffield , Western Bank , Sheffield S3 7HF , U.K
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26
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Troian-Gautier L, Turlington MD, Wehlin SAM, Maurer AB, Brady MD, Swords WB, Meyer GJ. Halide Photoredox Chemistry. Chem Rev 2019; 119:4628-4683. [PMID: 30854847 DOI: 10.1021/acs.chemrev.8b00732] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Halide photoredox chemistry is of both practical and fundamental interest. Practical applications have largely focused on solar energy conversion with hydrogen gas, through HX splitting, and electrical power generation, in regenerative photoelectrochemical and photovoltaic cells. On a more fundamental level, halide photoredox chemistry provides a unique means to generate and characterize one electron transfer chemistry that is intimately coupled with X-X bond-breaking and -forming reactivity. This review aims to deliver a background on the solution chemistry of I, Br, and Cl that enables readers to understand and utilize the most recent advances in halide photoredox chemistry research. These include reactions initiated through outer-sphere, halide-to-metal, and metal-to-ligand charge-transfer excited states. Kosower's salt, 1-methylpyridinium iodide, provides an early outer-sphere charge-transfer excited state that reports on solvent polarity. A plethora of new inner-sphere complexes based on transition and main group metal halide complexes that show promise for HX splitting are described. Long-lived charge-transfer excited states that undergo redox reactions with one or more halogen species are detailed. The review concludes with some key goals for future research that promise to direct the field of halide photoredox chemistry to even greater heights.
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Affiliation(s)
- Ludovic Troian-Gautier
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Michael D Turlington
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Sara A M Wehlin
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Andrew B Maurer
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Matthew D Brady
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Wesley B Swords
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Gerald J Meyer
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
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27
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Jarman PJ, Noakes F, Fairbanks S, Smitten K, Griffiths IK, Saeed HK, Thomas JA, Smythe C. Exploring the Cytotoxicity, Uptake, Cellular Response, and Proteomics of Mono- and Dinuclear DNA Light-Switch Complexes. J Am Chem Soc 2018; 141:2925-2937. [DOI: 10.1021/jacs.8b09999] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Paul J. Jarman
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, U.K
| | - Felicity Noakes
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, U.K
- Department of Chemistry, University of Sheffield, Sheffield S10 2TN, U.K
| | - Simon Fairbanks
- Department of Chemistry, University of Sheffield, Sheffield S10 2TN, U.K
| | - Kirsty Smitten
- Department of Chemistry, University of Sheffield, Sheffield S10 2TN, U.K
| | | | - Hiwa K. Saeed
- Department of Chemistry, University of Sheffield, Sheffield S10 2TN, U.K
| | - Jim A. Thomas
- Department of Chemistry, University of Sheffield, Sheffield S10 2TN, U.K
| | - Carl Smythe
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, U.K
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28
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Keane PM, Tory J, Towrie M, Sazanovich IV, Cardin CJ, Quinn SJ, Hartl F, Kelly JM, Long C. Spectro-electrochemical Studies on [Ru(TAP) 2(dppz)] 2+-Insights into the Mechanism of its Photosensitized Oxidation of Oligonucleotides. Inorg Chem 2018; 58:663-671. [PMID: 30540448 DOI: 10.1021/acs.inorgchem.8b02859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Ru(TAP)2(dppz)]2+ (TAP = 1,4,5,8-tetraazaphenanthrene; dppz = dipyrido[3,2- a:2',3'- c]phenazine) is known to photo-oxidize guanine in DNA. Whether this oxidation proceeds by direct photoelectron transfer or by proton-coupled electron transfer is still unknown. To help distinguish between these mechanisms, spectro-electrochemical experiments have been carried out with [Ru(TAP)2(dppz)]2+ in acetonitrile. The UV-vis and mid-IR spectra obtained for the one-electron reduced product were compared to those obtained by picosecond transient absorption and time-resolved infrared experiments of [Ru(TAP)2(dppz)]2+ bound to guanine-containing DNA. An interesting feature of the singly reduced species is an electronic transition in the near-IR region (with λmax at 1970 and 2820 nm). Density functional and time-dependent density functional theory simulations of the vibrational and electronic spectra of [Ru(TAP)2(dppz)]2+, the reduced complex [Ru(TAP)2(dppz)]+, and four isomers of [Ru(TAP)(TAPH)(dppz)]2+ (a possible product of proton-coupled electron transfer) were performed. Significantly, these predict absorption bands at λ > 1900 nm (attributed to a ligand-to-metal charge-transfer transition) for [Ru(TAP)2(dppz)]+ but not for [Ru(TAP)(TAPH)(dppz)]2+. Both the UV-vis and mid-IR difference absorption spectra of the electrochemically generated singly reduced species [Ru(TAP)2(dppz)]+ agree well with the transient absorption and time-resolved infrared spectra previously determined for the transient species formed by photoexcitation of [Ru(TAP)2(dppz)]2+ intercalated in guanine-containing DNA. This suggests that the photochemical process in DNA proceeds by photoelectron transfer and not by a proton-coupled electron transfer process involving formation of [Ru(TAP)(TAPH)(dppz)]2+, as is proposed for the reaction with 5'-guanosine monophosphate. Additional infrared spectro-electrochemical measurements and density functional calculations have also been carried out on the free TAP ligand. These show that the TAP radical anion in acetonitrile also exhibits strong broad near-IR electronic absorption (λmax at 1750 and 2360 nm).
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Affiliation(s)
- Páraic M Keane
- School of Chemistry , University of Dublin, Trinity College , Dublin 2 , Ireland.,Department of Chemistry , University of Reading , Whiteknights, Reading RG6 6AD , United Kingdom
| | - Joanne Tory
- Department of Chemistry , University of Reading , Whiteknights, Reading RG6 6AD , United Kingdom
| | - Michael Towrie
- Science and Technology Facilities Council , Rutherford Appleton Laboratory, Research Complex at Harwell , Didcot, Oxfordshire OX11 0QX , United Kingdom
| | - Igor V Sazanovich
- Science and Technology Facilities Council , Rutherford Appleton Laboratory, Research Complex at Harwell , Didcot, Oxfordshire OX11 0QX , United Kingdom
| | - Christine J Cardin
- Department of Chemistry , University of Reading , Whiteknights, Reading RG6 6AD , United Kingdom
| | - Susan J Quinn
- School of Chemistry , University College Dublin , Belfield, Dublin 4 , Ireland
| | - František Hartl
- Department of Chemistry , University of Reading , Whiteknights, Reading RG6 6AD , United Kingdom
| | - John M Kelly
- School of Chemistry , University of Dublin, Trinity College , Dublin 2 , Ireland
| | - Conor Long
- School of Chemical Sciences , Dublin City University , Dublin 9 , Ireland
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29
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De S, Sarkar B, Jadhav GR, Ramasamy SK, Banerjee S, Moorthy A, Paira P, K AKS. Experimental and Theoretical Study on the Biomolecular Interaction of Novel Acenaphtho Quinoxaline and Dipyridophenazine Analogues. ChemistrySelect 2018. [DOI: 10.1002/slct.201801448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sourav De
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
| | - Bidisha Sarkar
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
| | - Gajanan Raosaheb Jadhav
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
| | - Selva Kumar Ramasamy
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
| | - Subhasis Banerjee
- Department of Pharmaceutical Chemistry; Gupta College of Technological Sciences; Asansol- 713301, West Bengal. India
| | - Anbalagan Moorthy
- School of Bioscience & Technology; Vellore Institute of Technology; Vellore 632014, Tamil Nadu India
| | - Priyankar Paira
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
| | - Ashok Kumar S K
- Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology; Vellore- 632014, Tamil Nadu India
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30
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Photophysical properties of [(norharmane)Re(CO)3 (L)]+ complexes (L = bpy, phen or dppz). Redox behavior of the excited states and their interaction with Calf Thymus DNA. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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31
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Maisuls I, Cabrerizo FM, David-Gara PM, Epe B, Ruiz GT. DNA Oxidation Photoinduced by Norharmane Rhenium(I) Polypyridyl Complexes: Effect of the Bidentate N,N′-Ligands on the Damage Profile. Chemistry 2018; 24:12902-12911. [DOI: 10.1002/chem.201801272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 04/15/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Iván Maisuls
- Instituto de Investigaciones Biotecnologicas; Instituto de Tecnologia Chascomus (IIB-INTECH); Universidad Nacional de San Martin (UNSAM); I. Marino, Km 8.2 CC 164 (7130) Chascomus Argentina
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de la Plata (UNLP); CCT La Plata-CONICET; Diag. 113 y 64, Suc. 4, C.C. 16 (B1906ZAA) La Plata Argentina
| | - Franco M. Cabrerizo
- Instituto de Investigaciones Biotecnologicas; Instituto de Tecnologia Chascomus (IIB-INTECH); Universidad Nacional de San Martin (UNSAM); I. Marino, Km 8.2 CC 164 (7130) Chascomus Argentina
| | - Pedro M. David-Gara
- Centro de Investigaciones Ópticas (CIOP-CONICET-CIC); Universidad Nacional de La Plata; C.C.3 (1897) La Plata Argentina
| | - Bernd Epe
- Institute of Pharmacy and Biochemistry; University of Mainz; Staudingerweg 5 D-55099 Mainz Germany
| | - Gustavo T. Ruiz
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA); Universidad Nacional de la Plata (UNLP); CCT La Plata-CONICET; Diag. 113 y 64, Suc. 4, C.C. 16 (B1906ZAA) La Plata Argentina
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32
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Schindler J, Traber P, Zedler L, Zhang Y, Lefebvre JF, Kupfer S, Gräfe S, Demeunynck M, Chavarot-Kerlidou M, Dietzek B. Photophysics of a Ruthenium Complex with a π-Extended Dipyridophenazine Ligand for DNA Quadruplex Labeling. J Phys Chem A 2018; 122:6558-6569. [DOI: 10.1021/acs.jpca.8b05274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julian Schindler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
- Department Functional Interfaces, Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Philipp Traber
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Linda Zedler
- Department Functional Interfaces, Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Ying Zhang
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
- Department Functional Interfaces, Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Jean-François Lefebvre
- Univ. Grenoble Alpes, CNRS, DPM, 38000 Grenoble, France
- Laboratoire de Chimie et Biologie des Métaux, Univ. Grenoble Alpes, CNRS, CEA, 38000 Grenoble, France
| | - Stephan Kupfer
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Stefanie Gräfe
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | | | | | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
- Department Functional Interfaces, Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany
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33
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Keane PM, Kelly JM. Transient absorption and time-resolved vibrational studies of photophysical and photochemical processes in DNA-intercalating polypyridyl metal complexes or cationic porphyrins. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Liu X, Sun B, Kell REM, Southam HM, Butler JA, Li X, Poole RK, Keene FR, Collins JG. The Antimicrobial Activity of Mononuclear Ruthenium(II) Complexes Containing the dppz Ligand. Chempluschem 2018; 83:643-650. [DOI: 10.1002/cplu.201800042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 03/27/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Xuewen Liu
- School of Physical, Environmental and Mathematical Sciences; University of New South Wales; Australian Defence Force Academy; Canberra ACT 2600 Australia
- College of Chemistry and Material Engineering; Hunan University of Arts and Science; ChangDe 415000 P. R. China
| | - Biyun Sun
- School of Physical, Environmental and Mathematical Sciences; University of New South Wales; Australian Defence Force Academy; Canberra ACT 2600 Australia
| | - Ruby E. M. Kell
- Department of Molecular Biology and Biotechnology; The University of Sheffield; Sheffield S10 2TN United Kingdom
| | - Hannah M. Southam
- Department of Molecular Biology and Biotechnology; The University of Sheffield; Sheffield S10 2TN United Kingdom
| | - Jonathan A. Butler
- Department of Molecular Biology and Biotechnology; The University of Sheffield; Sheffield S10 2TN United Kingdom
| | - Xin Li
- New Drug Screening Center; China Pharmaceutical University; Nanjing JiangSu Province 210009 P. R. China
| | - Robert K. Poole
- Department of Molecular Biology and Biotechnology; The University of Sheffield; Sheffield S10 2TN United Kingdom
| | - F. Richard Keene
- School of Physical Sciences; University of Adelaide; Adelaide SA 5005 Australia
- Australian Institute of Tropical Health & Medicine; Centre for Biodiscovery & Molecular Development of Therapeutics; James Cook University; Townsville QLD 4811 Australia
| | - J. Grant Collins
- School of Physical, Environmental and Mathematical Sciences; University of New South Wales; Australian Defence Force Academy; Canberra ACT 2600 Australia
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35
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Mai S, Plasser F, Dorn J, Fumanal M, Daniel C, González L. Quantitative wave function analysis for excited states of transition metal complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.01.019] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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36
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Photochemical properties of a Re(I) polymer containing dppz in its structure. An interplay between dark and bright states of dppz. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Mårtensson AKF, Bergentall M, Tremaroli V, Lincoln P. Diastereomeric bactericidal effect of Ru(phenanthroline) 2 dipyridophenazine. Chirality 2018; 28:713-720. [PMID: 27791316 PMCID: PMC5248623 DOI: 10.1002/chir.22656] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/05/2016] [Accepted: 09/21/2016] [Indexed: 01/30/2023]
Abstract
Metal susceptibility assays and spot plating were used to investigate the antimicrobial activity of enantiopure [Ru(phen)2 dppz]2+ (phen =1,10-phenanthroline and dppz = dipyrido[3,2-a:2´,3´-c]phenazine) and [μ-bidppz(phen)4 Ru2 ]4+ (bidppz =11,11´-bis(dipyrido[3,2-a:2´,3´-c]phenazinyl)), on Gram-negative Escherichia coli and Gram-positive Bacillus subtilis as bacterial models. The minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) were determined for both complexes: while [μ-bidppz(phen)4 Ru2 ]4+ only showed a bactericidal effect at the highest concentrations tested, the antimicrobial activity of [Ru(phen)2 dppz]2+ against B. subtilis was comparable to that of tetracyline. In addition, the Δ-enantiomer of [Ru(phen)2 dppz]2+ showed a 2-fold higher bacteriostatic and bactericidal effect compared to the Λ-enantiomer. This was in accordance with the enantiomers relative binding affinity for DNA, thus strongly indicating DNA binding as the mode of action.
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Affiliation(s)
- Anna K F Mårtensson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
| | - Mattias Bergentall
- Wallenberg Laboratory and Sahlgrenska Center for Cardiovascular and Metabolic Research, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Valentina Tremaroli
- Wallenberg Laboratory and Sahlgrenska Center for Cardiovascular and Metabolic Research, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Per Lincoln
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
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38
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Bouzada D, Salvadó I, Barka G, Rama G, Martínez-Costas J, Lorca R, Somoza Á, Melle-Franco M, Vázquez ME, Vázquez López M. Selective G-quadruplex binding by oligoarginine-Ru(dppz) metallopeptides. Chem Commun (Camb) 2018; 54:658-661. [DOI: 10.1039/c7cc08286j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We demonstrate that both the R8 functionalization and its interplay with the ancillary ligand have and an important role in the G-quadruplex recognition process by Ru(dppz) metallopeptides.
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39
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Estalayo-Adrián S, Garnir K, Moucheron C. Perspectives of ruthenium(ii) polyazaaromatic photo-oxidizing complexes photoreactive towards tryptophan-containing peptides and derivatives. Chem Commun (Camb) 2018; 54:322-337. [DOI: 10.1039/c7cc06542f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This review focuses on recent advances in the search for RuII polyazaaromatic complexes as molecular photoreagents for tryptophan-containing peptides and proteins, in view of future biomedical applications.
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Affiliation(s)
- S. Estalayo-Adrián
- Organic Chemistry and Photochemistry
- Université Libre de Bruxelles, (U. L. B.)
- 1050 Bruxelles
- Belgium
| | - K. Garnir
- Organic Chemistry and Photochemistry
- Université Libre de Bruxelles, (U. L. B.)
- 1050 Bruxelles
- Belgium
| | - C. Moucheron
- Organic Chemistry and Photochemistry
- Université Libre de Bruxelles, (U. L. B.)
- 1050 Bruxelles
- Belgium
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40
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Derrat HS, Robertson CC, Meijer AJHM, Thomas JA. Turning intercalators into groove binders: synthesis, photophysics and DNA binding properties of tetracationic mononuclear ruthenium(ii)-based chromophore–quencher complexes. Dalton Trans 2018; 47:12300-12307. [DOI: 10.1039/c8dt02633e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite incorporating an extended planar polyaromatic ligand two newly synthesized RuII complexes are not DNA intercalators but groove binders.
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Affiliation(s)
- Hanan S. Derrat
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
- Department of Chemistry
| | | | | | - Jim A. Thomas
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
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41
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Erdmann E, Villinger A, König B, Seidel WW. 1,10-Phenanthroline-dithiine iridium and ruthenium complexes: synthesis, characterization and photocatalytic dihydrogen evolution. Photochem Photobiol Sci 2018; 17:1056-1067. [DOI: 10.1039/c8pp00068a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extending 1,10-phenanthroline with a dithiine link led to a remarkable increase of the luminescence lifetimes of the respective Ir(ppy)2 and Ru(bpy)2 complexes.
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Affiliation(s)
- E. Erdmann
- Institute of Organic Chemistry
- Faculty of Chemistry and Pharmacy
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - A. Villinger
- Institut für Chemie
- Universität Rostock
- 18059 Rostock
- Germany
| | - B. König
- Institute of Organic Chemistry
- Faculty of Chemistry and Pharmacy
- Universität Regensburg
- 93053 Regensburg
- Germany
| | - W. W. Seidel
- Institut für Chemie
- Universität Rostock
- 18059 Rostock
- Germany
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42
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Sreedharan S, Gill MR, Garcia E, Saeed HK, Robinson D, Byrne A, Cadby A, Keyes TE, Smythe C, Pellett P, Bernardino de la Serna J, Thomas JA. Multimodal Super-resolution Optical Microscopy Using a Transition-Metal-Based Probe Provides Unprecedented Capabilities for Imaging Both Nuclear Chromatin and Mitochondria. J Am Chem Soc 2017; 139:15907-15913. [PMID: 28976195 DOI: 10.1021/jacs.7b08772] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Detailed studies on the live cell uptake properties of a dinuclear membrane-permeable RuII cell probe show that, at low concentrations, the complex localizes and images mitochondria. At concentrations above ∼20 μM, the complex images nuclear DNA. Because the complex is extremely photostable, has a large Stokes shift, and displays intrinsic subcellular targeting, its compatibility with super-resolution techniques was investigated. It was found to be very well suited to image mitochondria and nuclear chromatin in two color, 2C-SIM, and STED and 3D-STED, both in fixed and live cells. In particular, due to its vastly improved photostability compared to that of conventional SR probes, it can provide images of nuclear DNA at unprecedented resolution.
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Affiliation(s)
| | | | - Esther Garcia
- Central Laser Facility, Rutherford Appleton Laboratory, Research Complex at Harwell, Science and Technology Facilities Council , Harwell-Oxford, Didcot OX11 0QX, United Kingdom
| | | | | | - Aisling Byrne
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University , Dublin 9, Ireland
| | | | - Tia E Keyes
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University , Dublin 9, Ireland
| | | | - Patrina Pellett
- GE Healthcare Bio-Sciences Corp , 800 Centennial Avenue, P.O. Box 1327, Piscataway, New Jersey 08855-1327, United States
| | - Jorge Bernardino de la Serna
- Central Laser Facility, Rutherford Appleton Laboratory, Research Complex at Harwell, Science and Technology Facilities Council , Harwell-Oxford, Didcot OX11 0QX, United Kingdom
- Department of Physics, King's College London , London WC2R 2LS, United Kingdom
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43
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Synthesis, crystal structure, DFT calculation and DNA binding studies of new water-soluble derivatives of dppz. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.05.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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44
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Abreu FD, Paulo TDF, Gehlen MH, Ando RA, Lopes LGF, Gondim ACS, Vasconcelos MA, Teixeira EH, Sousa EHS, de Carvalho IMM. Aryl-Substituted Ruthenium(II) Complexes: A Strategy for Enhanced Photocleavage and Efficient DNA Binding. Inorg Chem 2017; 56:9084-9096. [DOI: 10.1021/acs.inorgchem.7b01108] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Felipe Diógenes Abreu
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
| | - Tercio de F. Paulo
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
| | - Marcelo H. Gehlen
- Instituto de Química de São
Carlos, Universidade de São Paulo, 13566-590 São
Carlos, São Paulo, Brazil
| | - Rômulo A. Ando
- Instituto
de Química, Universidade de São Paulo, Cx. Postal 26077, 05508-000 São Paulo, Brazil
| | - Luiz G. F. Lopes
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
| | - Ana Cláudia S. Gondim
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
| | - Mayron A. Vasconcelos
- Laboratório Integrado de Biomoléculas, Departamento
de Patologia e Medicina Legal, Universidade Federal do Ceará, 60441−750 Fortaleza, Ceará Brazil
- Departamento de Ciências Biológicas, Faculdade de Ciências
Exatas e Naturais, Universidade do Estado do Rio Grande do Norte, 59625-620, Mossoró, Rio Grande do Norte, Brazil
| | - Edson H. Teixeira
- Laboratório Integrado de Biomoléculas, Departamento
de Patologia e Medicina Legal, Universidade Federal do Ceará, 60441−750 Fortaleza, Ceará Brazil
| | - Eduardo Henrique Silva Sousa
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
| | - Idalina Maria Moreira de Carvalho
- Laboratório
de Bioinorgânica, Departamento de Química Orgânica
e Inorgânica, Universidade Federal do Ceará, Cx. Postal 6021, 60440-900 Fortaleza, Ceará Brazil
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45
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Keane PM, Hall JP, Poynton FE, Poulsen BC, Gurung SP, Clark IP, Sazanovich IV, Towrie M, Gunnlaugsson T, Quinn SJ, Cardin CJ, Kelly JM. Inosine Can Increase DNA′s Susceptibility to Photo‐oxidation by a RuIIComplex due to Structural Change in the Minor Groove. Chemistry 2017; 23:10344-10351. [DOI: 10.1002/chem.201701447] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Páraic M. Keane
- Department of ChemistryUniversity of Reading, Whiteknights Reading RG6 6AD UK
- School of ChemistryTrinity College Dublin Dublin 2 Ireland
| | - James P. Hall
- Department of ChemistryUniversity of Reading, Whiteknights Reading RG6 6AD UK
- Diamond Light Source, Harwell Science and Innovation CampusDidcot Oxfordshire OX11 0DE UK
| | - Fergus E. Poynton
- School of ChemistryTrinity College Dublin Dublin 2 Ireland
- Trinity Biomedical Sciences Institute Pearse St. Dublin 2 Ireland
| | - Bjørn C. Poulsen
- School of ChemistryTrinity College Dublin Dublin 2 Ireland
- Trinity Biomedical Sciences Institute Pearse St. Dublin 2 Ireland
| | - Sarah P. Gurung
- Department of ChemistryUniversity of Reading, Whiteknights Reading RG6 6AD UK
- Diamond Light Source, Harwell Science and Innovation CampusDidcot Oxfordshire OX11 0DE UK
| | - Ian P. Clark
- Central Laser FacilityResearch Complex at Harwell, STFC Rutherford Appleton LaboratoriesDidcot Oxfordshire OX11 0QX UK
| | - Igor V. Sazanovich
- Central Laser FacilityResearch Complex at Harwell, STFC Rutherford Appleton LaboratoriesDidcot Oxfordshire OX11 0QX UK
| | - Michael Towrie
- Central Laser FacilityResearch Complex at Harwell, STFC Rutherford Appleton LaboratoriesDidcot Oxfordshire OX11 0QX UK
| | - Thorfinnur Gunnlaugsson
- School of ChemistryTrinity College Dublin Dublin 2 Ireland
- Trinity Biomedical Sciences Institute Pearse St. Dublin 2 Ireland
| | - Susan J. Quinn
- School of ChemistryUniversity College Dublin, Belfield Dublin 4 Ireland
| | - Christine J. Cardin
- Department of ChemistryUniversity of Reading, Whiteknights Reading RG6 6AD UK
| | - John M. Kelly
- School of ChemistryTrinity College Dublin Dublin 2 Ireland
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46
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Cardin CJ, Kelly JM, Quinn SJ. Photochemically active DNA-intercalating ruthenium and related complexes - insights by combining crystallography and transient spectroscopy. Chem Sci 2017; 8:4705-4723. [PMID: 28936338 PMCID: PMC5596416 DOI: 10.1039/c7sc01070b] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 04/05/2017] [Indexed: 11/21/2022] Open
Abstract
Recent research on the study of the interaction of ruthenium polypyridyl compounds and defined sequence nucleic acids is reviewed. Particular emphasis is paid to complexes [Ru(LL)2(Int)]2+ containing potentially intercalating ligands (Int) such as dipyridophenazine (dppz), which are known to display light-switching or photo-oxidising behaviour, depending on the nature of the ancillary ligands. X-ray crystallography has made a key contribution to our understanding, and the first complete survey of structural results is presented. These include sequence, enantiomeric, substituent and structural specificities. The use of ultrafast transient spectroscopic methods to probe the ultrafast processes for complexes such as [Ru(TAP)2(dppz)]2+ and [Ru(phen)2(dppz)]2+ when bound to mixed sequence oligonucleotides are reviewed with particular attention being paid to the complementary advantages of transient (visible) absorption and time-resolved (mid) infra-red techniques to probe spectral changes in the metal complex and in the nucleic acid. The observed photophysical properties are considered in light of the structural information obtained from X-ray crystallography. In solution, metal complexes can be expected to bind at more than one DNA step, so that a perfect correlation of the photophysical properties and factors such as the orientation or penetration of the ligand into the intercalation pocket should not be expected. This difficulty can be obviated by carrying out TRIR studies in the crystals. Dppz complexes also undergo insertion, especially with mismatched sequences. Future areas for study such as those involving non-canonical forms of DNA, such as G-quadruplexes or i-motifs are also briefly considered.
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Affiliation(s)
- Christine J Cardin
- School of Chemistry , University of Reading , Whiteknights , RG6 6AD , UK .
| | - John M Kelly
- School of Chemistry , Trinity College Dublin , Dublin 2 , Ireland .
| | - Susan J Quinn
- School of Chemistry , University College Dublin , Belfield , Dublin 4 , Ireland .
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47
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Boynton AN, Marcélis L, McConnell AJ, Barton JK. A Ruthenium(II) Complex as a Luminescent Probe for DNA Mismatches and Abasic Sites. Inorg Chem 2017; 56:8381-8389. [PMID: 28657712 PMCID: PMC5516787 DOI: 10.1021/acs.inorgchem.7b01037] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
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[Ru(bpy)2(BNIQ)]2+ (BNIQ = Benzo[c][1,7]naphthyridine-1-isoquinoline), which incorporates the sterically expansive BNIQ ligand, is a
highly selective luminescent probe for DNA mismatches and abasic sites,
possessing a 500-fold higher binding affinity toward these destabilized
regions relative to well-matched base pairs. As a result of this higher
binding affinity, the complex exhibits an enhanced steady-state emission
in the presence of DNA duplexes containing a single base mismatch
or abasic site compared to fully well-matched DNA. Luminescence quenching
experiments with Cu(phen)22+ and [Fe(CN)6]3– implicate binding of the complex to
a mismatch from the minor groove via metalloinsertion. The emission
response of the complex to different single base mismatches, binding
preferentially to the more destabilized mismatches, is also consistent
with binding by metalloinsertion. This work shows that high selectivity
toward destabilized regions in duplex DNA can be achieved through
the rational design of a complex with a sterically expansive aromatic
ligand. The luminescent complex [Ru(bpy)2(BNIQ)]2+ selectivity targets mismatched and abasic sites in duplex
DNA and exhibits an enhanced emission intensity in the presence of
these defect sites relative to well-matched base pairs.
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Affiliation(s)
- Adam N Boynton
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Lionel Marcélis
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Anna J McConnell
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Jacqueline K Barton
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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48
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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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49
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Saadallah D, Bellakhal M, Amor S, Lefebvre JF, Chavarot-Kerlidou M, Baussanne I, Moucheron C, Demeunynck M, Monchaud D. Selective Luminescent Labeling of DNA and RNA Quadruplexes by π-Extended Ruthenium Light-Up Probes. Chemistry 2017; 23:4967-4972. [DOI: 10.1002/chem.201605948] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Dounia Saadallah
- Laboratoire de Chimie Organique et Photochimie; Université Libre de Bruxelles; 1050 Bruxelles Belgium
- Departement de Pharmacochimie Moléculaire; Université Grenoble Alpes, CNRS UMR5063; 38041 Grenoble France
| | - Mehdi Bellakhal
- Institut de Chimie Moléculaire; ICMUB CNRS UMR6302, UBFC; 21078 Dijon France
| | - Souheila Amor
- Institut de Chimie Moléculaire; ICMUB CNRS UMR6302, UBFC; 21078 Dijon France
| | - Jean-François Lefebvre
- Departement de Pharmacochimie Moléculaire; Université Grenoble Alpes, CNRS UMR5063; 38041 Grenoble France
- Laboratoire de Chimie et Biologie des Métaux; Université Grenoble Alpes, CNRS UMR5249, CEA; 38054 Grenoble France
| | - Murielle Chavarot-Kerlidou
- Laboratoire de Chimie et Biologie des Métaux; Université Grenoble Alpes, CNRS UMR5249, CEA; 38054 Grenoble France
| | - Isabelle Baussanne
- Departement de Pharmacochimie Moléculaire; Université Grenoble Alpes, CNRS UMR5063; 38041 Grenoble France
| | - Cécile Moucheron
- Laboratoire de Chimie Organique et Photochimie; Université Libre de Bruxelles; 1050 Bruxelles Belgium
| | - Martine Demeunynck
- Departement de Pharmacochimie Moléculaire; Université Grenoble Alpes, CNRS UMR5063; 38041 Grenoble France
| | - David Monchaud
- Institut de Chimie Moléculaire; ICMUB CNRS UMR6302, UBFC; 21078 Dijon France
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50
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Deraedt Q, Marcélis L, Loiseau F, Elias B. Towards mismatched DNA photoprobes and photoreagents: “elbow-shaped” Ru(ii) complexes. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00223d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Due to their potentially harmful consequences, the detection of mismatched DNA is a subject of high interest. In order to probe these DNA mismatches, we report new Ru(ii) complexes, bearing “elbow-shaped” extended planar ligands based on an acridine or a phenazine core.
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Affiliation(s)
- Q. Deraedt
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - L. Marcélis
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - F. Loiseau
- Département de Chimie Moléculaire
- Université Grenoble-Alpes
- BP53 38041 Grenoble
- France
| | - B. Elias
- Institute of Condensed Matter and Nanosciences
- Molecules
- Solids and Reactivity (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
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