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Jacques A, Devaux A, Rubay C, Pennetreau F, Desmecht A, Robeyns K, Hermans S, Elias B. Polypyridine Iridium(III) and Ruthenium(II) Complexes for Homogeneous and Graphene‐Supported Photoredox Catalysis. ChemCatChem 2023. [DOI: 10.1002/cctc.202201672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Alexandre Jacques
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Alexandre Devaux
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Christophe Rubay
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Florence Pennetreau
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Antonin Desmecht
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Sophie Hermans
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences Molecular Chemistry Materials and Catalysis Division (IMCN/MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium
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2
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Bevernaegie R, Wehlin SAM, Elias B, Troian‐Gautier L. A Roadmap Towards Visible Light Mediated Electron Transfer Chemistry with Iridium(III) Complexes. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000255] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Robin Bevernaegie
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Sara A. M. Wehlin
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
| | - Benjamin Elias
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Ludovic Troian‐Gautier
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
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Lu C, Xu W, Shah H, Liu B, Xu W, Sun L, Qian SY, Sun W. In Vitro Photodynamic Therapy of Mononuclear and Dinuclear Iridium(III) Bis(terpyridine) Complexes. ACS APPLIED BIO MATERIALS 2020; 3:6865-6875. [PMID: 35019348 DOI: 10.1021/acsabm.0c00784] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Three mononuclear or dinuclear bis(terpyridine) (tpy) iridium(III) complexes bearing pyren-1-yl (pyr) group(s) were synthesized. Their photophysical properties in water and in vitro photodynamic therapy (PDT) effects toward the human lung epithelial cancer cell line A549 and the human epidermal skin cancer cell line A431 were investigated to evaluate the effects of dinuclear versus mononuclear complexes and the impact of the oligoether substituent at the ligand. All complexes possessed pyr-tpy ligand-associated charge transfer (1CT)/1π,π* absorption bands at 350-550 nm, with the dinuclear complex Ir3 showing the much enhanced absorptivity of this band. These complexes exhibited dual emission upon excitation at >430 nm in most cases, with the emitting states being ascribed to 1ILCT (intraligand charge transfer) and 3π,π*/3CT states, respectively. All complexes exhibited relatively weak to moderate cytotoxicity in the dark but high photocytotoxicity upon broadband visible light irradiation. Among them, the dinuclear complex Ir3 showed the highest intracellular reactive oxygen species (ROS) generation and PDT efficiency compared to its mononuclear counterpart Ir1. Introducing an oligoether substituent on one of the tpy ligands in Ir2 also improved its intracellular ROS generation and PDT efficacy compared to those induced by Ir1. Ir3 induced both mitochondrial dysfunction and lysosomal damage upon light activation toward both cell lines, whereas Ir1 and Ir2 caused both mitochondrial dysfunction and lysosomal damage in A431 cells but only lysosomal damage in A549 cells. The dominant cell death pathway induced by Ir1-Ir3 PDT is apoptosis.
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Affiliation(s)
- Cuifen Lu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States.,Hubei Collaborative Innovation Center for Advanced Organochemical Materials and Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan 430062, P. R. China
| | - Wan Xu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Harshit Shah
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Wei Xu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Liya Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Steven Y Qian
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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4
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Liu B, Jabed MA, Kilina S, Sun W. Synthesis, Photophysics, and Reverse Saturable Absorption of trans-Bis-cyclometalated Iridium(III) Complexes (C^N^C)Ir(R-tpy) + (tpy = 2,2':6',2″-Terpyridine) with Broadband Excited-State Absorption. Inorg Chem 2020; 59:8532-8542. [PMID: 32497429 DOI: 10.1021/acs.inorgchem.0c00961] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Extending the bandwidth of triplet excited-state absorption in transition-metal complexes is appealing for developing broadband reverse saturable absorbers. Targeting this goal, five bis-terdentate iridium(III) complexes (Ir1-Ir5) bearing trans-bis-cyclometalating (C^N^C) and 4'-R-2,2':6',2″-terpyridine (4'-R-tpy) ligands were synthesized. The effects of the structural variation in cyclometalating ligands and substituents at the tpy ligand on the photophysics of these complexes have been systematically explored using spectroscopic methods (i.e., UV-vis absorption, emission, and transient absorption spectroscopy) and time-dependent density functional theory (TDDFT) calculations. All complexes exhibited intensely structured 1π,π* absorption bands at <400 nm and broad charge transfer (1CT)/1π,π* transitions at 400-600 nm. Ligand structural variations exerted a very small effect on the energies of the 1CT/1π,π* transitions; however, they had a significant effect on the molar extinction coefficients of these absorption bands. All complexes emitted featureless deep red phosphorescence in solutions at room temperature and gave broad-band and strong triplet excited-state absorption ranging from the visible to the near-infrared (NIR) spectral regions, with both originating from the 3π,π*/3CT states. Although alteration of the ligand structures influenced the emission energies slightly, these changes significantly affected the emission lifetimes and quantum yields, transient absorption spectral features, and the triplet excited-state quantum yields of the complexes. Except for Ir3, the other four complexes all manifested reverse saturable absorption (RSA) upon nanosecond laser pulse excitation at 532 nm, with the decreasing trend of RSA following Ir2 ≈ Ir4 > Ir1 > Ir5 > Ir3. The RSA trend corresponded well with the strength of the excited-state and ground-state absorption differences (ΔOD) at 532 nm for these complexes.
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Affiliation(s)
- Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Mohammed A Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota58108-6050, United States
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5
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Weynand J, Moreno-Betancourt A, Loiseau F, Berthet N, Defrancq E, Elias B. Redox-Active Bis-Cyclometalated Iridium(III) Complex as a DNA Photo-Cleaving Agent. Inorg Chem 2020; 59:2426-2433. [PMID: 31977196 DOI: 10.1021/acs.inorgchem.9b03312] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of new photoactive metal complexes that can trigger oxidative damages to the genetic material is of great interest. In the present paper, we describe the detailed study of a highly photo-oxidant iridium(III) complex that triggers photoinduced electron transfer (PET) with purine DNA bases. The PET has been studied by luminescence and laser flash photolysis experiments. From plasmid DNA agarose gel electrophoresis experiments, we demonstrated the high ability of the iridium complex to induce strand breaks upon light irradiation. Reactive oxygen species (ROS)-specific scavengers and stabilizers were employed to identify that the photocleavage process, the results of which infer singlet oxygen and hydrogen peroxide as the predominant species. To the best of our knowledge, the present work represents one of the few study for highly photo-oxidant bis-cyclometalated iridium(III) complex toward DNA.
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Affiliation(s)
- Justin Weynand
- Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis Division (MOST) , Université catholique de Louvain (UCLouvain) , Place Louis Pasteur 1, bte L4.01.02 , B-1348 Louvain-la-Neuve , Belgium.,Département de Chimie Moléculaire, UMR CNRS 5250 , Université Grenoble Alpes , CS 40700, 38058 Grenoble , France
| | - Angélica Moreno-Betancourt
- Département de Chimie Moléculaire, UMR CNRS 5250 , Université Grenoble Alpes , CS 40700, 38058 Grenoble , France
| | - Frédérique Loiseau
- Département de Chimie Moléculaire, UMR CNRS 5250 , Université Grenoble Alpes , CS 40700, 38058 Grenoble , France
| | - Nathalie Berthet
- Département de Chimie Moléculaire, UMR CNRS 5250 , Université Grenoble Alpes , CS 40700, 38058 Grenoble , France
| | - Eric Defrancq
- Département de Chimie Moléculaire, UMR CNRS 5250 , Université Grenoble Alpes , CS 40700, 38058 Grenoble , France
| | - Benjamin Elias
- Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis Division (MOST) , Université catholique de Louvain (UCLouvain) , Place Louis Pasteur 1, bte L4.01.02 , B-1348 Louvain-la-Neuve , Belgium
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6
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Bevernaegie R, Wehlin SAM, Piechota EJ, Abraham M, Philouze C, Meyer GJ, Elias B, Troian-Gautier L. Improved Visible Light Absorption of Potent Iridium(III) Photo-oxidants for Excited-State Electron Transfer Chemistry. J Am Chem Soc 2020; 142:2732-2737. [DOI: 10.1021/jacs.9b12108] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robin Bevernaegie
- UCLouvain, Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1, box L4.01.02, B-1348 Louvain-la-Neuve, Belgium
| | - Sara A. M. Wehlin
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Eric J. Piechota
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Michael Abraham
- UCLouvain, Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1, box L4.01.02, B-1348 Louvain-la-Neuve, Belgium
| | - Christian Philouze
- Département de Chimie Moléculaire, Université Grenoble-Alpes (UGA), UMR CNRS 5250, CS 40700, 38058 Grenoble, France
| | - Gerald J. Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Benjamin Elias
- UCLouvain, Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1, box L4.01.02, B-1348 Louvain-la-Neuve, Belgium
| | - Ludovic Troian-Gautier
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
- Laboratoire de Chimie Organique, Université Libre de Bruxelles (ULB), CP 160/06, 50 avenue F.D. Roosevelt, B-1050 Brussels, Belgium
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Liu B, Monro S, Li Z, Jabed MA, Ramirez D, Cameron CG, Colón K, Roque J, Kilina S, Tian J, McFarland SA, Sun W. A New Class of Homoleptic and Heteroleptic Bis(terpyridine) Iridium(III) Complexes with Strong Photodynamic Therapy Effects. ACS APPLIED BIO MATERIALS 2019; 2:2964-2977. [PMID: 31844844 PMCID: PMC6913535 DOI: 10.1021/acsabm.9b00312] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Six homo- or heteroleptic tricationic Ir(R1-tpy)(R2-tpy)3+ complexes (Ir1-Ir6, R1/R2 = Ph, 4'-N(CH3)2Ph, pyren-1-yl, or 4'-{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}Ph, tpy = 2,2';6',2"-terpyridine) were synthesized and tested for photodynamic therapy (PDT) effects. The ground- and excited-state characteristics of these complexes were studied systematically via spectroscopic methods and quantum chemistry calculations. All complexes possessed intraligand charge transfer (1ILCT) / metal-to-ligand charge transfer (1MLCT) dominated transition(s) in their low-energy absorption bands, which red-shifted with the increased electron-releasing strength of the R1/R2 substituent. Five of the complexes exhibited ligand-centered 3 π,π*/3ILCT/3MLCT emission. With a stronger electron-releasing R1/R2 substituent, the degree of charge transfer contribution increased, leading to a decrease of the emission quantum yield. When the 4'-N(CH3)2Ph substituent was introduced on both tpy ligands, the emission of Ir3 was completely quenched. Our study on the transient absorption of these complexes demonstrated that they all possessed broadband triplet excited-state absorption in the 400-800 nm region. Pyrenyl substitution of one or more tpy ligands, as in Ir4 and Ir5, increased the lifetimes of the lowest triplet excited state and the singlet oxygen (1O2) production efficiencies. Ir1-Ir5 were nontoxic toward SK-MEL-28 cells, with photocytotoxicities that varied from 0.18 to 153 µM. Among them, Ir4 had the highest 1O2 quantum yield (0.81) in cell-free conditions, showing the largest photocytotoxicity against SK-MEL-28 cells for Ir(III) PSs to date, and was the most efficient generator of reactive oxygen species (ROS) in vitro. Ir4 possessed a very large phototherapeutic index (PI = dark EC50 / light EC50) of >1657, the largest reported for an Ir(III) complex photosensitizer upon broadband visible light (400-700 nm) activation. Ir4 also exhibited a very strong PDT effect toward MCF-7 breast cancer cells and its xenograft tumor model. Upon 450-nm light activation, Ir4 dramatically inhibited the xenograft tumor growth and exhibited negligible side effects upon PDT treatment.
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Affiliation(s)
- Bingqing Liu
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Susan Monro
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada
| | - Zhike Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE), Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, P. R. China
| | - Mohammed A. Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Daniel Ramirez
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Colin G. Cameron
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Katsuya Colón
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - John Roque
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
| | - Jian Tian
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE), Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, P. R. China
| | - Sherri A. McFarland
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC 27402–6170, USA
| | - Wenfang Sun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108–6050, USA
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Avagliano D, Sánchez-Murcia PA, González L. Directional and regioselective hole injection of spiropyran photoswitches intercalated into A/T-duplex DNA. Phys Chem Chem Phys 2019; 21:17971-17977. [DOI: 10.1039/c9cp03398j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hole electron transfer of UV excited spiropyran intercalated in dsDNA is directional, asymmetric and regioselective, as shown by quantitative multiscale computations.
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Affiliation(s)
- Davide Avagliano
- Institute of Theoretical Chemistry
- Faculty of Chemistry
- University of Vienna
- A-1090 Vienna
- Austria
| | - Pedro A. Sánchez-Murcia
- Institute of Theoretical Chemistry
- Faculty of Chemistry
- University of Vienna
- A-1090 Vienna
- Austria
| | - Leticia González
- Institute of Theoretical Chemistry
- Faculty of Chemistry
- University of Vienna
- A-1090 Vienna
- Austria
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9
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Mukhopadhyay S, Singh RS, Paitandi RP, Sharma G, Koch B, Pandey DS. Influence of substituents on DNA and protein binding of cyclometalated Ir(iii) complexes and anticancer activity. Dalton Trans 2018. [PMID: 28640302 DOI: 10.1039/c7dt01015j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Synthesis of terpyridyl based ligands 3-([2,2':6',2''-terpyridin]-4'-yl)-7-methoxy-2-(methylthio)-quinolone, (L1); 3-([2,2':6',2''-terpyridin]-4'-yl)-6-methoxyquinolin-2(1H)-one, (L2); 3-([2,2'-:6',2''-terpyridin]-4'-yl)-6-methylquinolin-2(1H)-one (L3) and cyclometalated iridium(iii) complexes [[Ir(ppy)2L1]+PF6- (1), [Ir(ppy)2L2]+PF6- (2), [Ir(ppy)2L3]+PF6- (3) (2-phenylpyridine = Hppy)] involving these ligands has been described. The ligands L1-L3 and complexes 1-3 have been thoroughly characterized by elemental analyses, spectral studies (IR, 1H, 13C NMR, UV/vis and fluorescence) ESI-MS, and the structure of 3 has been unambiguously authenticated by single crystal X-ray analyses. UV/vis, fluorescence and circular dichroism spectroscopic studies showed rather efficient binding of 1 with CT-DNA (calf thymus DNA) and BSA (bovine serum albumin) relative to 2 and 3. Molecular docking studies unveiled binding of 1-3 with minor groove of CT-DNA via van der Waal's forces and electrostatically with the hydrophobic moiety of HSA (human serum albumin). The ligands and complexes exhibited moderate cytotoxicity towards MDA-MB-231 (breast cancer cell line) and significant influence on HeLa (cervical cancer cell line) cells. Cytotoxicity, morphological changes, and apoptosis have been followed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide) assay, Hoechst 33342/PI (PI = propidium iodide) staining, cell cycle analysis by FACS (fluorescence activated cell sorting), and ROS (reactive oxygen species) generation by DCFH-DA (dichlorodihydrofluorescein diacetate) dye. Confocal microscopy images revealed that the drug efficiently initiates apoptosis in the cell cytosol. The IC50 values showed superior cytotoxicity of 1-3 against the HeLa cell line relative to cisplatin, and their ability to induce apoptosis is in the order 1 > 2 > 3.
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Affiliation(s)
- Sujay Mukhopadhyay
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India.
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10
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Jacques A, Auvray T, Bevernaegie R, Loiseau F, Cibian M, Hanan GS, Kirsch-De Mesmaeker A, Elias B. Proton sensitive charge-transfer excited states in bis-terdentate cyclometalated Ir(III) complexes: Spectroscopic and theoretical investigation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.10.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Interaction with calf-thymus DNA and photoinduced cleavage of pBR322 by rhodium(III) and iridium(III) complexes containing crown thioether ligands. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Synthesis and in vitro biological evaluation of three 4′-(4-methoxyphenyl)-2,2′:6′,2″-terpyridine iridium(III) complexes as new telomerase inhibitors. Eur J Med Chem 2018; 143:1387-1395. [DOI: 10.1016/j.ejmech.2017.10.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 09/29/2017] [Accepted: 10/12/2017] [Indexed: 12/13/2022]
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13
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Paitandi RP, Mukhopadhyay S, Singh RS, Sharma V, Mobin SM, Pandey DS. Anticancer Activity of Iridium(III) Complexes Based on a Pyrazole-Appended Quinoline-Based BODIPY. Inorg Chem 2017; 56:12232-12247. [DOI: 10.1021/acs.inorgchem.7b01693] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rajendra Prasad Paitandi
- Department of Chemistry,
Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Sujay Mukhopadhyay
- Department of Chemistry,
Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Roop Shikha Singh
- Department of Chemistry,
Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | | | | | - Daya Shankar Pandey
- Department of Chemistry,
Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
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14
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Rees TW, Liao J, Sinopoli A, Male L, Calogero G, Curchod BFE, Baranoff E. Synthesis and Characterization of a Series of Bis-homoleptic Cycloruthenates with Terdentate Ligands as a Family of Panchromatic Dyes. Inorg Chem 2017; 56:9903-9912. [PMID: 28763219 DOI: 10.1021/acs.inorgchem.7b01412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of six homoleptic bis-cyclometalated ruthenium complexes, Ru(N^N^C)2, is reported where N^N^C is a 6-(2,4-difluoro-3-R3-phenyl)-4-R2-4'-R1-2,2'-bipyridine with R3 = -H or -CF3 and R2 and R1 = -COOEt or -CF3. An effective synthesis of the ligands and the complexes is described. The UV-visible absorption studies demonstrate that these complexes are panchromatic dyes absorbing up to 900 nm. Importantly, the onset of absorption depends only on the substitution on the metalated phenyl, whereas the intensity of absorption throughout the spectra is a function of substituents on both the phenyl and the bipyridine moieties. The same trend is observed in electrochemistry as the redox gap depends only on the substitution on the metalated phenyl, whereas the oxidation and reduction potentials are a function of substituents on both the phenyl and the bipyridine moieties. Preliminary tests as sensitizer for dye-sensitized solar cells demonstrate that the number of anchoring groups on the dye has a major influence on the device efficiency.
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Affiliation(s)
- Thomas W Rees
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
| | - JinFeng Liao
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K.,Sun Yat-sen University , Guangzhou 510275, P.R. China
| | - Alessandro Sinopoli
- Qatar Environment & Energy Institute (QEERI), Hamad bin Khalifa University (HBKU) , Doha Qatar
| | - Louise Male
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
| | - Giuseppe Calogero
- CNR-IPCF, Istituto per i Processi Chimico-Fisici , Messina 98158, Italy
| | - Basile F E Curchod
- Centre for Computational Chemistry, School of Chemistry, University of Bristol , Bristol BS8 1TS, U.K
| | - Etienne Baranoff
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
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15
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Passays J, Rubay C, Marcélis L, Elias B. Synthesis and Photophysical Properties of Triazolyl Ir
III
Nucleosides. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601227] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Johan Passays
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCL) Place Louis Pasteur 1/L4.01.02 1348 Louvain‐la‐Neuve Belgium
| | - Christophe Rubay
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCL) Place Louis Pasteur 1/L4.01.02 1348 Louvain‐la‐Neuve Belgium
| | - Lionel Marcélis
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCL) Place Louis Pasteur 1/L4.01.02 1348 Louvain‐la‐Neuve Belgium
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences (IMCN) Université catholique de Louvain (UCL) Place Louis Pasteur 1/L4.01.02 1348 Louvain‐la‐Neuve Belgium
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16
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Mukhopadhyay S, Singh RS, Biswas A, Maiti B, Pandey DS. Molecular and Nanoaggregation in Cyclometalated Iridium(III) Complexes through Structural Modification. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600563] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sujay Mukhopadhyay
- Department of Chemistry; Institute of Science; Banaras Hindu University; 221005 Varanasi U.P. India
| | - Roop Shikha Singh
- Department of Chemistry; Institute of Science; Banaras Hindu University; 221005 Varanasi U.P. India
| | - Arnab Biswas
- Department of Chemistry; Institute of Science; Banaras Hindu University; 221005 Varanasi U.P. India
| | - Biswajit Maiti
- Department of Chemistry; Institute of Science; Banaras Hindu University; 221005 Varanasi U.P. India
| | - Daya Shankar Pandey
- Department of Chemistry; Institute of Science; Banaras Hindu University; 221005 Varanasi U.P. India
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17
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Deraedt Q, Loiseau F, Elias B. Photochemical Tuning of Tris-Bidentate Acridine- and Phenazine-Based Ir(III) Complexes. J Fluoresc 2016; 26:2095-2103. [DOI: 10.1007/s10895-016-1904-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/04/2016] [Indexed: 10/21/2022]
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18
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Wang LL, Zhang L, Wang H, Zhang Y, Huang JT, Zhu H, Ying X, Ji LN, Liu HY. Photoinduced Electron Transfer between Anionic Corrole and DNA. J Phys Chem A 2016; 120:535-42. [PMID: 26752116 DOI: 10.1021/acs.jpca.5b11021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The interaction between a water-soluble anionic Ga(III) corrole [Ga(tpfc)(SO3Na)2] and calf thymus DNA (ct-DNA) has been investigated by using femtosecond transient absorption spectroscopy. A significant broadening from 570 to 585 nm of positive absorption band of the blend of Ga(tpfc)(SO3Na)2 and ct-DNA (Ga(tpfc)(SO3Na)2-ctDNA) has been observed from 0.15 to 0.50 ps after photoexcitation of Ga(tpfc)(SO3Na)2 into the Soret band. The control experiment has been performed on the model DNA ([poly(dG-dC)]2) rich in guanine bases, which exhibits a similar spectral broadening, whereas it is absent for [poly(dA-dT)]2 without guanine bases. The molecular orbital calculation shows that HOMO of Ga(tpfc)(SO3Na)2 is lower than that of guanine bases. The results of the electrochemical experiment show the reversible electron transfer (ET) between Ga(tpfc)(SO3Na)2 and guanine bases of ct-DNA is thermodynamically favorable. The dynamical analysis of the transient absorption spectra reveals that an ultrafast forward ET from the guanine bases to Ga(tpfc)(SO3Na)2 occurs within the pulse duration (156 fs), leading to the formation of an intermediate state. The following back ET to the ground state of Ga(tpfc)(SO3Na)2 may be accomplished in 520 fs.
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Affiliation(s)
- Li-Li Wang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Lei Zhang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Hui Wang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Yang Zhang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Jun-Teng Huang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - He Zhu
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Xiao Ying
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Liang-Nian Ji
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Hai-Yang Liu
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
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19
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Gattuso H, Duchanois T, Besancenot V, Barbieux C, Assfeld X, Becuwe P, Gros PC, Grandemange S, Monari A. Interaction of Iron II Complexes with B-DNA. Insights from Molecular Modeling, Spectroscopy, and Cellular Biology. Front Chem 2015; 3:67. [PMID: 26734600 PMCID: PMC4683171 DOI: 10.3389/fchem.2015.00067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 11/25/2015] [Indexed: 11/13/2022] Open
Abstract
We report the characterization of the interaction between B-DNA and three terpyridin iron II complexes. Relatively long time-scale molecular dynamics (MD) is used in order to characterize the stable interaction modes. By means of molecular modeling and UV-vis spectroscopy, we prove that they may lead to stable interactions with the DNA duplex. Furthermore, the presence of larger π-conjugated moieties also leads to the appearance of intercalation binding mode. Non-covalent stabilizing interactions between the iron complexes and the DNA are also characterized and evidenced by the analysis of the gradient of the electronic density. Finally, the structural deformations induced on the DNA in the different binding modes are also evidenced. The synthesis and chemical characterization of the three complexes is reported, as well as their absorption spectra in presence of DNA duplexes to prove the interaction with DNA. Finally, their effects on human cell cultures have also been evidenced to further enlighten their biological effects.
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Affiliation(s)
- Hugo Gattuso
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
| | - Thibaut Duchanois
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Hécrin, SRSMCNancy, France
| | - Vanessa Besancenot
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Claire Barbieux
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Xavier Assfeld
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
| | - Philippe Becuwe
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Philippe C. Gros
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Hécrin, SRSMCNancy, France
| | - Stephanie Grandemange
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, CRANNancy, France
| | - Antonio Monari
- Université de Lorraine – Nancy and Centre National de la Recherche Scientifique, Theory-Simulation-Modeling, SRSMCNancy, France
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20
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Castor KJ, Metera KL, Tefashe UM, Serpell CJ, Mauzeroll J, Sleiman HF. Cyclometalated Iridium(III) Imidazole Phenanthroline Complexes as Luminescent and Electrochemiluminescent G-Quadruplex DNA Binders. Inorg Chem 2015; 54:6958-67. [PMID: 26125314 DOI: 10.1021/acs.inorgchem.5b00921] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Katherine J. Castor
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
| | - Kimberly L. Metera
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
| | - Ushula M. Tefashe
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
| | - Christopher J. Serpell
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
| | - Janine Mauzeroll
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
| | - Hanadi F. Sleiman
- Department of Chemistry, McGill University, 801 Sherbrooke
West, Montreal, Quebec H3A 0B8, Canada
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