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Shereef HA, Moemen YS, Elshami FI, El-Nahas AM, Shaban SY, van Eldik R. DNA Binding and Cleavage, Stopped-Flow Kinetic, Mechanistic, and Molecular Docking Studies of Cationic Ruthenium(II) Nitrosyl Complexes Containing “NS4” Core. Molecules 2023; 28:molecules28073028. [PMID: 37049792 PMCID: PMC10095794 DOI: 10.3390/molecules28073028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/24/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
This work aimed to evaluate in vitro DNA binding mechanistically of cationic nitrosyl ruthenium complex [RuNOTSP]+ and its ligand (TSPH2) in detail, correlate the findings with cleavage activity, and draw conclusions about the impact of the metal center. Theoretical studies were performed for [RuNOTSP]+, TSPH2, and its anion TSP−2 using DFT/B3LYP theory to calculate optimized energy, binding energy, and chemical reactivity. Since nearly all medications function by attaching to a particular protein or DNA, the in vitro calf thymus DNA (ctDNA) binding studies of [RuNOTSP]+ and TSPH2 with ctDNA were examined mechanistically using a variety of biophysical techniques. Fluorescence experiments showed that both compounds effectively bind to ctDNA through intercalative/electrostatic interactions via the DNA helix’s phosphate backbone. The intrinsic binding constants (Kb), (2.4 ± 0.2) × 105 M−1 ([RuNOTSP]+) and (1.9 ± 0.3) × 105 M−1 (TSPH2), as well as the enhancement dynamic constants (KD), (3.3 ± 0.3) × 104 M−1 ([RuNOTSP]+) and (2.6 ± 0.2) × 104 M−1 (TSPH2), reveal that [RuNOTSP]+ has a greater binding propensity for DNA compared to TSPH2. Stopped-flow investigations showed that both [RuNOTSP]+ and TSPH2 bind through two reversible steps: a fast second-order binding, followed by a slow first-order isomerization reaction via a static quenching mechanism. For the first and second steps of [RuNOTSP]+ and TSPH2, the detailed binding parameters were established. The total binding constants for [RuNOTSP]+ (Ka = 43.7 M−1, Kd = 2.3 × 10−2 M−1, ΔG0 = −36.6 kJ mol−1) and TSPH2 (Ka = 15.1 M−1, Kd = 66 × 10−2 M, ΔG0 = −19 kJ mol−1) revealed that the relative reactivity is approximately ([RuNOTSP]+)/(TSPH2) = 3/1. The significantly negative ΔG0 values are consistent with a spontaneous binding reaction to both [RuNOTSP]+ and TSPH2, with the former being very favorable. The findings showed that the Ru(II) center had an effect on the reaction rate but not on the mechanism and that the cationic [RuNOTSP]+ was a more highly effective DNA binder than the ligand TSPH2 via strong electrostatic interaction with the phosphate end of DNA. Because of its higher DNA binding affinity, cationic [RuNOTSP]+ demonstrated higher cleavage efficiency towards the minor groove of pBR322 DNA via the hydrolytic pathway than TSPH2, revealing the synergy effect of TSPH2 in the form of the complex. Furthermore, the mode of interaction of both compounds with ctDNA has also been supported by molecular docking.
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Affiliation(s)
- Hadeer A. Shereef
- Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt
- Clinical Pathology Department, University Hospital, Menoufia University, Shebin El-Kom 32512, Egypt
| | - Yasmine S. Moemen
- Clinical Pathology Department, National Liver Institute, Menoufia University, Shebin El-Kom 32512, Egypt
| | - Fawzia I. Elshami
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Ahmed M. El-Nahas
- Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt
| | - Shaban Y. Shaban
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
- Correspondence: (S.Y.S.); (R.v.E.)
| | - Rudi van Eldik
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
- Correspondence: (S.Y.S.); (R.v.E.)
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Ratnam A, Kumari S, Singh S, Mawai K, Kumar R, Singh UP, Ghosh K. Unprecedented cleavage of -N-N- bond of ligand and phenyl ring nitration during nitric oxide (NO) reactivity studies: new ruthenium nitrosyl complex and photoinduced liberation of NO. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2141115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anand Ratnam
- Department of Chemistry, DDU Gorakhpur University, Gorakhpur, India
| | - Sheela Kumari
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - Sain Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - Kiran Mawai
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - Rajan Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - U. P. Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
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Biophysicochemical studies of a ruthenium (II) nitrosyl thioether‐thiolate complex binding to BSA: Mechanistic information, molecular docking, and relationship to antibacterial and cytotoxic activities. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Song L, Bai H, Liu C, Gong W, Wang A, Wang L, Zhao Y, Zhao X, Wang H. Synthesis, Biomacromolecular Interactions, Photodynamic NO Releasing and Cellular Imaging of Two [RuCl(qn)(Lbpy)(NO)]X Complexes. Molecules 2021; 26:molecules26092545. [PMID: 33925453 PMCID: PMC8123785 DOI: 10.3390/molecules26092545] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 11/16/2022] Open
Abstract
Two light-activated NO donors [RuCl(qn)(Lbpy)(NO)]X with 8-hydroxyquinoline (qn) and 2,2′-bipyridine derivatives (Lbpy) as co-ligands were synthesized (Lbpy1 = 4,4′-dicarboxyl-2,2′-dipyridine, X = Cl− and Lbpy2 = 4,4′-dimethoxycarbonyl-2,2′-dipyridine, X = NO3−), and characterized using ultraviolet–visible (UV-vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (1H NMR), elemental analysis and electrospray ionization mass spectrometry (ESI-MS) spectra. The [RuCl(qn)(Lbpy2)(NO)]NO3 complex was crystallized and exhibited distorted octahedral geometry, in which the Ru–N(O) bond length was 1.752(6) Å and the Ru–N–O angle was 177.6(6)°. Time-resolved FT-IR and electron paramagnetic resonance (EPR) spectra were used to confirm the photoactivated NO release of the complexes. The binding constant (Kb) of two complexes with human serum albumin (HSA) and DNA were quantitatively evaluated using fluorescence spectroscopy, Ru-Lbpy1 (Kb~106 with HSA and ~104 with DNA) had higher affinity than Ru-Lbpy2. The interactions between the complexes and HSA were investigated using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) and EPR spectra. HSA can be used as a carrier to facilitate the release of NO from the complexes upon photoirradiation. The confocal imaging of photo-induced NO release in living cells was successfully observed with a fluorescent NO probe. Moreover, the photocleavage of pBR322 DNA for the complexes and the effect of different Lbpy substituted groups in the complexes on their reactivity were analyzed.
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Affiliation(s)
- Luna Song
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
- Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;
| | - Hehe Bai
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
- Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;
| | - Chenyang Liu
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
| | - Wenjun Gong
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
| | - Ai Wang
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
| | - Li Wang
- Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;
| | - Yi Zhao
- Shanxi Key Laboratory of Pharmaceutical Biotechnology, Taiyuan 030006, China;
| | - Xuan Zhao
- Department of Chemistry, University of Memphis, Memphis, TN 38152, USA;
| | - Hongfei Wang
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; (L.S.); (H.B.); (C.L.); (W.G.); (A.W.)
- Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;
- Correspondence: ; Tel./Fax: +86-351-7010699
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Mir JM, Malik BA, Maurya RC. Nitric oxide-releasing molecules at the interface of inorganic chemistry and biology: a concise overview. REV INORG CHEM 2019. [DOI: 10.1515/revic-2018-0017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AbstractThe useful aspects of nitric oxide (NO) are nowadays widely known. Due to the need for this molecule in the maintenance of homeostasis, NO-releasing compounds are tested every year to optimize its levels in a patient suffering from low NO production. This manuscript is an update of some important historical concerns about nitrosyl complexes having the ability to act as NO-releasing compounds under the influence of different chemically modified environments. At present, the search for efficient and less harmful NO-releasing molecules at desirable targets and concentrations has gained considerable momentum in nitrosyl chemistry. Iron, ruthenium, and manganese nitrosyls have been investigated elitely to disentangle their electronic transition (excitation) under visible light to act as NO donors without harming the healthy cells of a target. There is much evidence supporting the increase of NO lability if amino acids are used as complexing ligands, the design of a reduction center close to an NO grouping, and the development of porphyrin system-based nitrosyl complexes. From the overall survey, it may be concluded that the desirable properties of such scaffolds need to be evaluated further to complement the biological milieu.
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Affiliation(s)
- Jan Mohammad Mir
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of Post Graduate Studies and Research in Chemistry and Pharmacy, Rani Durgavati University, Jabalpur 482001, Madhya Pradesh, India
- Department of Chemistry, Islamic University of Science and Technology, Awantipora 192322, Jammu and Kashmir
| | - Bashir Ahmad Malik
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of Post Graduate Studies and Research in Chemistry and Pharmacy, Rani Durgavati University, Jabalpur 482001, Madhya Pradesh, India
- Department of Chemistry, Islamic University of Science and Technology, Awantipora 192322, Jammu and Kashmir
| | - Ram Charitra Maurya
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of Post Graduate Studies and Research in Chemistry and Pharmacy, Rani Durgavati University, Jabalpur 482001, Madhya Pradesh, India
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Crisalli MA, Franco LP, Silva BR, Holanda AKM, Bendhack LM, Da Silva RS, Ford PC. Nitric oxide release from a photoactive water-soluble ruthenium nitrosyl. Biological effects. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1469129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Meredith A. Crisalli
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, USA
| | - Lilian P. Franco
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Bruno R. Silva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Alda K. M. Holanda
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, USA
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará Cx., Fortaleza, Brazil
| | - Lusiane M. Bendhack
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Roberto S. Da Silva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Peter C. Ford
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, USA
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7
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Ramos LCB, Marchesi MSP, Callejon D, Baruffi MD, Lunardi CN, Slep LD, Bendhack LM, da Silva RS. Enhanced Antitumor Activity against Melanoma Cancer Cells by Nitric Oxide Release and Photosensitized Generation of Singlet Oxygen from Ruthenium Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600217] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Loyanne C. B. Ramos
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto - USP; Av. do Café s/n 14040-903 Ribeirão Preto-SP Brazil
| | | | - Daniel Callejon
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto - USP; Av. do Café s/n 14040-903 Ribeirão Preto-SP Brazil
| | - Marcelo Dias Baruffi
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto - USP; Av. do Café s/n 14040-903 Ribeirão Preto-SP Brazil
| | - Claure N. Lunardi
- Faculdade de Ceilandia; Universidade de Brasília; Brasilia-DF Brazil
| | - Leonardo D. Slep
- Departamento de Química Inorgánica; Analítica y Química Física and INQUIMAE; Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
| | - Lusiane M. Bendhack
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto - USP; Av. do Café s/n 14040-903 Ribeirão Preto-SP Brazil
| | - Roberto Santana da Silva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto - USP; Av. do Café s/n 14040-903 Ribeirão Preto-SP Brazil
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8
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Chan KW, Ng WM, Cheung WM, Lai CS, Sung HH, Williams ID, Leung WH. Di- and tri-nuclear ruthenium nitrosyl complexes containing thiolate ligands. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Kim J, Saravanakumar G, Choi HW, Park D, Kim WJ. A platform for nitric oxide delivery. J Mater Chem B 2014; 2:341-356. [DOI: 10.1039/c3tb21259a] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Baranovskii VI, Mal’tsev DA, Sizova OV. Excited-state potential surfaces of ruthenium nitrosyl complexes: conical intersections and the Jahn-Teller effect. Russ Chem Bull 2013. [DOI: 10.1007/s11172-012-0140-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Zheng W, Wu S, Zhao S, Geng Y, Jin J, Su Z, Fu Q. Carbonyl Amine/Schiff Base Ligands in Manganese Complexes: Theoretical Study on the Mechanism, Capability of NO Release. Inorg Chem 2012; 51:3972-80. [DOI: 10.1021/ic2011953] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weili Zheng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shuixing Wu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shanshan Zhao
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Yun Geng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Junling Jin
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Qiang Fu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
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Merkle AC, McQuarters AB, Lehnert N. Synthesis, spectroscopic analysis and photolabilization of water-soluble ruthenium(iii)–nitrosyl complexes. Dalton Trans 2012; 41:8047-59. [DOI: 10.1039/c2dt30464c] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Ip HF, Yi XY, Wong WY, Williams ID, Leung WH. Synthesis, structures and reactivity of ruthenium nitrosyl complexes containing Kläui's oxygen tripodal ligand. Dalton Trans 2011; 40:11043-50. [DOI: 10.1039/c1dt10306g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Radford RJ, Lim MD, Silva RSD, Ford PC. Photochemical cleavage of nitrate ion coordinated to a Cr(III) porphyrin. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.492217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Robert J. Radford
- a Department of Chemistry and Biochemistry , University of California, Santa Barbara , CA 93106-9510, USA
| | - Mark D. Lim
- a Department of Chemistry and Biochemistry , University of California, Santa Barbara , CA 93106-9510, USA
| | - Roberto Santana Da Silva
- a Department of Chemistry and Biochemistry , University of California, Santa Barbara , CA 93106-9510, USA
- b Departamento de Química da, Faculdade de Ciências Farmacêuticas de , Universidade de São Paulo, Ribeirão Preto , USP, Brazil
| | - Peter C. Ford
- a Department of Chemistry and Biochemistry , University of California, Santa Barbara , CA 93106-9510, USA
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Affiliation(s)
- Ulrich Schatzschneider
- Lehrstuhl für Anorganische Chemie I – Bioanorganische Chemie and Research Department Interfacial Systems Chemistry (RD IFSC), Ruhr‐Universität Bochum NC 3/74, Universitätsstr. 150, 44801 Bochum, Germany, Fax: +49‐234‐32‐14378
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Rose MJ, Mascharak PK. Photosensitization of Ruthenium Nitrosyls to Red Light with an Isoelectronic Series of Heavy-Atom Chromophores: Experimental and Density Functional Theory Studies on the Effects of O-, S- and Se-Substituted Coordinated Dyes. Inorg Chem 2009; 48:6904-17. [DOI: 10.1021/ic900899j] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Michael J. Rose
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California 95064
| | - Pradip K. Mascharak
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California 95064
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Rose MJ, Mascharak PK. Photoactive Ruthenium Nitrosyls: Effects of Light and Potential Application as NO Donors. Coord Chem Rev 2008; 252:2093-2114. [PMID: 21052477 PMCID: PMC2967751 DOI: 10.1016/j.ccr.2007.11.011] [Citation(s) in RCA: 251] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Michael J. Rose
- Department of Chemistry & Biochemistry, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Pradip K. Mascharak
- Department of Chemistry & Biochemistry, University of California Santa Cruz, Santa Cruz, CA 95064, USA
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Rose MJ, Fry NL, Marlow R, Hinck L, Mascharak PK. Sensitization of ruthenium nitrosyls to visible light via direct coordination of the dye resorufin: trackable NO donors for light-triggered NO delivery to cellular targets. J Am Chem Soc 2008; 130:8834-46. [PMID: 18597437 DOI: 10.1021/ja801823f] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Three nitrosyl-dye conjugates, namely, [(Me 2bpb)Ru(NO)(Resf)] ( 1-Resf), [(Me 2bQb)Ru(NO)(Resf)] ( 2-Resf), and [((OMe) 2bQb)Ru(NO)(Resf)] ( 3-Resf) have been synthesized via direct replacement of the chloride ligand of the parent {Ru-NO} (6) nitrosyls of the type [(R 2byb)Ru(NO)(L)] with the anionic tricyclic dye resorufin (Resf). The structures of 1-Resf- 3-Resf have been determined by X-ray crystallography. The dye is coordinated to the ruthenium centers of these conjugates via the phenolato-O atom and is trans to NO. Systematic red shift of the d pi(Ru) --> pi*(NO) transition of the parent nitrosyls [(R 2byb)Ru(NO)(L)] due to changes in R and y in the equatorial tetradentate ligand R 2byb (2-) results in its eventual merge with the intense absorption band of the dye around 500 nm in 3-Resf. Unlike the UV-sensitive parent [(R 2byb)Ru(NO)(L)] nitrosyls, these dye-sensitized nitrosyls rapidly release NO when exposed to visible light (lambda >/= 465 nm). Comparison of the photochemical parameters reveals that direct coordination of the light-harvesting chromophore to the ruthenium center in the present nitrosyls results in a significantly greater extent of sensitization to visible light compared to nitrosyls with appended chromophore (linked via alkyl chains). 1-Resf has been employed as a "trackable" NO donor to promote NO-induced apoptosis in MDA-MB-231 human breast cancer cells under the control of light. The results of this work demonstrate that (a) the d pi(Ru) --> pi*(NO) transition (photoband) of {Ru-NO} (6) nitrosyls can be tuned into visible range via careful alteration of the ligand frame(s) and (b) such nitrosyls can be significantly sensitized to visible light by directly ligating a light-harvesting chromophore to the ruthenium center. The potential of these photosensitive nitrosyl-dye conjugates as (i) biological tools to study the effects of NO in cellular environments and (ii) "trackable" NO donors in photodynamic therapy of malignancies (such as skin cancer) has been discussed.
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Affiliation(s)
- Michael J Rose
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
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Bordini J, Novaes D, Borissevitch I, Owens B, Ford P, Tfouni E. Acidity and photolability of ruthenium salen nitrosyl and aquo complexes in aqueous solutions. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.11.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Rose MJ, Mascharak PK. Fiat Lux: selective delivery of high flux of nitric oxide (NO) to biological targets using photoactive metal nitrosyls. Curr Opin Chem Biol 2008; 12:238-44. [DOI: 10.1016/j.cbpa.2008.02.009] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2007] [Revised: 01/30/2008] [Accepted: 02/07/2008] [Indexed: 12/25/2022]
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Ortiz M, Torréns M, Mola JL, Ortiz PJ, Fragoso A, Díaz A, Cao R, Prados P, de Mendoza J, Otero A, Antiñolo A, Lara A. Nitric oxide binding and photodelivery based on ruthenium(ii) complexes of 4-arylazo-3,5-dimethylpyrazole. Dalton Trans 2008:3559-66. [DOI: 10.1039/b718645b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Olabe JA. The coordination chemistry of nitrosyl in cyanoferrates. An exhibit of bioinorganic relevant reactions. Dalton Trans 2008:3633-48. [DOI: 10.1039/b803153c] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rose MJ, Mascharak PK. A photosensitive {Ru–NO}6 nitrosyl bearing dansyl chromophore: novel NO donor with a fluorometric on/off switch. Chem Commun (Camb) 2008:3933-5. [DOI: 10.1039/b805332d] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Roncaroli F, Videla M, Slep LD, Olabe JA. New features in the redox coordination chemistry of metal nitrosyls {M–NO+; M–NO; M–NO−(HNO)}. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2007.04.012] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rose MJ, Olmstead MM, Mascharak PK. Photosensitization via Dye Coordination: A New Strategy to Synthesize Metal Nitrosyls That Release NO under Visible Light. J Am Chem Soc 2007; 129:5342-3. [PMID: 17407295 DOI: 10.1021/ja070247x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J Rose
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
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Rose MJ, Patra AK, Alcid EA, Olmstead MM, Mascharak PK. Ruthenium Nitrosyls Derived from Polypyridine Ligands with Carboxamide or Imine Nitrogen Donor(s): Isoelectronic Complexes with Different NO Photolability. Inorg Chem 2007; 46:2328-38. [PMID: 17315866 DOI: 10.1021/ic0620945] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As part of our search for photoactive ruthenium nitrosyls, a set of {RuNO}6 nitrosyls has been synthesized and structurally characterized. In this set, the first nitrosyl [(SBPy3)Ru(NO)](BF4)3 (1) is derived from a polypyridine Schiff base ligand SBPy3, while the remaining three nitrosyls are derived from analogous polypyridine ligands containing either one ([(PaPy3)Ru(NO)](BF4)2 (2)) or two ([(Py3P)Ru(NO)]BF4 (3) and [(Py3P)Ru(NO)(Cl)] (4)) carboxamide group(s). The coordination structures of 1 and 2 are very similar except that in 2, a carboxamido nitrogen is coordinated to the ruthenium center in place of an imine nitrogen in case of 1. In 3 and 4, the ruthenium center is coordinated to two carboxamido nitrogens in the equatorial plane and the bound NO is trans to a pyridine nitrogen (in 3) and chloride (in 4), respectively. Complexes 1-3 contain N6 donor set, and the NO stretching frequencies (nuNO) correlate well with the N-O bond distances. All four diamagnetic {RuNO}(6) nitrosyls are photoactive and release NO rapidly upon illumination with low-intensity (5-10 mW) UV light. Interestingly, photolysis of 1 generates the diamagnetic Ru(II) photoproduct [(SBPy3)Ru(MeCN)](2+) while 2-4 afford paramagnetic Ru(III) species in MeCN solution. The quantum yield values of NO release under UV illumination (lambda(max) = 302 nm) lie in the range 0.06-0.17. Complexes 3 and 4 also exhibit considerable photoactivity under visible light. The efficiency of NO release increases in the order 2 < 3 < 4, indicating that photorelease of NO is facilitated by (a) the increase in the number of coordinated carboxamido nitrogen(s) and (b) the presence of negatively charged ligands (like chloride) trans to the bound NO.
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Affiliation(s)
- Michael J Rose
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
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Poelhsitz GV, Bogado AL, de Souza GD, Rodrigues-Filho E, Batista AA, de Araujo MP. New nitrosyl ruthenium complex [RuCl(NO)(dcype)(bipy)](PF6)2: Synthesis, electrochemistry, NMR and ESI-MS/MS studies. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2006.09.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Nagao H, Enomoto K, Wakabayashi Y, Komiya G, Hirano T, Oi T. Synthesis of Nitrosylruthenium Complexes Containing 2,2‘:6‘,2‘ ‘-Terpyridine by Reactions of Alkoxo Complexes with Acids. Inorg Chem 2007; 46:1431-9. [PMID: 17291127 DOI: 10.1021/ic061644w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nitrosylruthenium complexes containing 2,2':6',2"-terpyridine (terpy) have been synthesized and characterized. The three alkoxo complexes trans-(NO, OCH3), cis-(Cl, OCH3)-[RuCl(OCH3)(NO)(terpy)]PF6 ([2]PF6), trans-(NO, OC2H5), cis-(Cl, OC2H5)-[RuCl(OC2H5)(NO)(terpy)]PF6 ([3]PF6), and [RuCl(OC3H7)(NO)(terpy)]PF6 ([4]PF6) were synthesized by reactions of trans-(Cl, Cl), cis-(NO, Cl)-[RuCl2(NO)(terpy)]PF6 ([1]PF6) with NaOCH3 in CH3OH, C2H5OH, and C3H7OH, respectively. Reactions of [3]PF6 with an acid such as hydrochloric acid and trifluoromethansulforic acid afford nitrosyl complexes in which the alkoxo ligand is substituted. The geometrical isomer of [1]PF6, trans-(NO, Cl), cis-(Cl, Cl)-[RuCl2(NO)(terpy)]PF6 ([5]PF6), was obtained by the reaction of [3]PF6 in a hydrochloric acid solution. Reaction of [3]PF6 with trifluoromethansulforic acid in CH3CN gave trans-(NO, Cl), cis-(CH3CN, Cl)-[RuCl(CH3CN)(NO)(terpy)]2+ ([6]2+) under refluxing conditions. The structures of [3]PF6, [4]PF6.CH3CN, [5]CF3SO3, and [6](PF6)2 were determined by X-ray crystallograpy.
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Affiliation(s)
- Hirotaka Nagao
- Department of Chemistry, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
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Doro FG, Rodrigues-Filho UP, Tfouni E. A regenerable ruthenium tetraammine nitrosyl complex immobilized on a modified silica gel surface: preparation and studies of nitric oxide release and nitrite-to-NO conversion. J Colloid Interface Sci 2006; 307:405-17. [PMID: 17196216 DOI: 10.1016/j.jcis.2006.11.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Revised: 11/09/2006] [Accepted: 11/09/2006] [Indexed: 11/27/2022]
Abstract
Silica gel bearing isonicotinamide groups was prepared by further modification of 3-aminopropyl-functionalized silica by a reaction with isonicotinic acid and 1,3-dicyclohexylcarbodiimide to yield 3-isonicotinamidepropyl-functionalized silica gel (ISNPS). This support was characterized by means of infrared spectroscopy, elemental analysis, and specific surface area. The ISNPS was used to immobilize the [Ru(NH(3))(4)SO(3)] moiety by reaction with trans-[Ru(NH(3))(4)(SO(2))Cl]Cl, yielding [Si(CH(2))(3)(isn)Ru(NH(3))(4)(SO(3))]. The related immobilized [Si(CH(2))(3)(isn)Ru(NH(3))(4)(L)](3+/2+) (L=SO(2), SO(2-)(4), OH(2), and NO) complexes were prepared and characterized by means of UV-vis and IR spectroscopy, as well as by cyclic voltammetry. Syntheses of the nitrosyl complex were performed by reaction of the immobilized ruthenium ammine [Si(CH(2))(3)(isn)Ru(NH(3))(4)(OH(2))](2+) with nitrite in acid or neutral (pH 7.4) solution. The similar results obtained in both ways indicate that the aqua complex was able to convert nitrite into coordinated nitrosyl. The reactivity of [Si(CH(2))(3)(isn)Ru(NH(3))(4)(NO)](3+) was investigated in order to evaluate the nitric oxide (NO) release. It was found that, upon light irradiation or chemical reduction, the immobilized nitrosyl complex was able to release NO, generating the corresponding Ru(III) or Ru(II) aqua complexes, respectively. The NO material could be regenerated from these NO-depleted materials obtained photochemically or by reduction. Regeneration was done by reaction with nitrite in aqueous solution (pH 7.4). Reduction-regeneration cycles were performed up to three times with no significant leaching of the ruthenium complex.
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Affiliation(s)
- Fabio Gorzoni Doro
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. dos Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
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