151
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Influence of the dissolution solvent on the cytotoxicity of octahedral cationic Ir(III) hydride complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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152
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Alonso-de Castro S, Ruggiero E, Ruiz-de-Angulo A, Rezabal E, Mareque-Rivas JC, Lopez X, López-Gallego F, Salassa L. Riboflavin as a bioorthogonal photocatalyst for the activation of a Pt IV prodrug. Chem Sci 2017; 8:4619-4625. [PMID: 28626570 PMCID: PMC5471451 DOI: 10.1039/c7sc01109a] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/13/2017] [Indexed: 12/12/2022] Open
Abstract
Encouraging developments demonstrate that few transition metal and organometallic catalysts can operate in a bioorthogonal fashion and promote non-natural chemistry in living systems by minimizing undesired side reactions with cellular components. These catalytic processes have potential for applications in medicinal chemistry and chemical biology. However, the stringent conditions of the cell environment severely limit the number of accessible metal catalysts and exogenous reactions. Herein, we report an unorthodox approach and a new type of bioorthogonal catalytic reaction, in which a metal complex is an unconventional substrate and an exogenous biological molecule acts as a catalyst. In this reaction, riboflavin photocatalytically converts a PtIV prodrug into cisplatin within the biological environment. Due to the catalytic activity of riboflavin, cisplatin-like apoptosis is induced in cancer cells under extremely low doses of light, potentially preventing systemic off-target reactions. Photocatalytic and bioorthogonal turnover of PtIV into PtII species is an attractive strategy to amplify the antineoplastic action of metal-based chemotherapeutics with spatio-temporal control.
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Affiliation(s)
| | - Emmanuel Ruggiero
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
| | - Ane Ruiz-de-Angulo
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
| | - Elixabete Rezabal
- Farmazia Fakultatea , Kimika Fisikoa Departamentua , Euskal Herriko Unibertsitatea , UPV/EHU , 01006 , Vitoria-Gasteiz , Spain
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
| | - Juan C Mareque-Rivas
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
| | - Xabier Lopez
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
- Kimika Fakultatea , Euskal Herriko Unibertsitatea , UPV/EHU , Donostia-San Sebastián 20080 , Spain .
| | - Fernando López-Gallego
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
| | - Luca Salassa
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
- Kimika Fakultatea , Euskal Herriko Unibertsitatea , UPV/EHU , Donostia-San Sebastián 20080 , Spain .
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153
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Meier SM, Kreutz D, Winter L, Klose MHM, Cseh K, Weiss T, Bileck A, Alte B, Mader JC, Jana S, Chatterjee A, Bhattacharyya A, Hejl M, Jakupec MA, Heffeter P, Berger W, Hartinger CG, Keppler BK, Wiche G, Gerner C. An Organoruthenium Anticancer Agent Shows Unexpected Target Selectivity For Plectin. Angew Chem Int Ed Engl 2017; 56:8267-8271. [DOI: 10.1002/anie.201702242] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Samuel M. Meier
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
| | - Dominique Kreutz
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Lilli Winter
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Matthias H. M. Klose
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Klaudia Cseh
- Institut für Anorganische Chemie; Universität Wien; Austria
| | | | - Andrea Bileck
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Beatrix Alte
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | - Johanna C. Mader
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Samir Jana
- Department für Zoology; University of Calcutta; 35 Ballygunge Circular Road India
| | - Annesha Chatterjee
- Department für Zoology; University of Calcutta; 35 Ballygunge Circular Road India
| | | | - Michaela Hejl
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Michael A. Jakupec
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Petra Heffeter
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | - Walter Berger
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | | | - Bernhard K. Keppler
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Gerhard Wiche
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Christopher Gerner
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
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154
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Meier SM, Kreutz D, Winter L, Klose MHM, Cseh K, Weiss T, Bileck A, Alte B, Mader JC, Jana S, Chatterjee A, Bhattacharyya A, Hejl M, Jakupec MA, Heffeter P, Berger W, Hartinger CG, Keppler BK, Wiche G, Gerner C. Ein Organoruthenium-Tumortherapeutikum mit unerwartet hoher Selektivität für Plectin. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Samuel M. Meier
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
| | - Dominique Kreutz
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Lilli Winter
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Österreich
| | - Matthias H. M. Klose
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Klaudia Cseh
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | | | - Andrea Bileck
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Beatrix Alte
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | - Johanna C. Mader
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Samir Jana
- Department of Zoology; University of Calcutta; Indien
| | | | | | - Michaela Hejl
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Michael A. Jakupec
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Petra Heffeter
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | - Walter Berger
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | | | - Bernhard K. Keppler
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Gerhard Wiche
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Österreich
| | - Christopher Gerner
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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155
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Wootton CA, Lam YPY, Willetts M, van Agthoven MA, Barrow MP, Sadler PJ, O Connor PB. Automatic assignment of metal-containing peptides in proteomic LC-MS and MS/MS data sets. Analyst 2017; 142:2029-2037. [PMID: 28513638 DOI: 10.1039/c7an00075h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Transition metal-containing proteins and enzymes are critical for the maintenance of cellular function and metal-based (metallo)drugs are commonly used for the treatment of many diseases, such as cancer. Detection and characterisation of metallodrug targets is crucial for improving drug-design and therapeutic efficacy. Due to the unique isotopic ratios of many metal species, and the complexity of proteomic samples, standard MS data analysis of these species is unsuitable for accurate assignment. Herein a new method for differentiating metal-containing species within complex LCMS data is presented based upon the Smart Numerical Annotation Procedure (SNAP). SNAP-LC accounts for the change in isotopic envelopes for analytes containing non-standard species, such as metals, and will accurately identify, record, and display the particular spectra within extended LCMS runs that contain target species, and produce accurate lists of matched peaks, greatly assisting the identification and assignment of modified species and tailored to the metals of interest. Analysis of metallated species obtained from tryptic digests of common blood proteins after reactions with three candidate metallodrugs is presented as proof-of-concept examples and demonstrates the effectiveness of SNAP-LC for the fast and accurate elucidation of metallodrug targets.
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Affiliation(s)
| | - Yuko P Y Lam
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, UK.
| | | | | | - Mark P Barrow
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, UK.
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, UK.
| | - Peter B O Connor
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, UK.
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156
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Chow MJ, Alfiean M, Pastorin G, Gaiddon C, Ang WH. Apoptosis-independent organoruthenium anticancer complexes that overcome multidrug resistance: self-assembly and phenotypic screening strategies. Chem Sci 2017; 8:3641-3649. [PMID: 30155208 PMCID: PMC6094174 DOI: 10.1039/c7sc00497d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 02/22/2017] [Indexed: 01/20/2023] Open
Abstract
Multidrug resistance is a major impediment to chemotherapy and limits the efficacies of conventional anticancer drugs. A strategy to bypass multidrug resistance is to develop new drug candidates capable of inducing apoptosis-independent programmed cell death. However, cellular pathways implicated in alternative programmed cell death are not well-elucidated and multifactorial, making a target-based discovery approach a challenge. Here, we show that a coordination-directed three-component assembly and phenotypic screening strategy could be employed as a viable alternative for the identification of apoptosis-independent organoruthenium anticancer agents. Through an on-plate synthesis and screening of 195 organoruthenium complexes against apoptosis-sensitive and -resistant cancers, we identified two apoptosis-independent hits. Subsequent validation of the two hits showed a lack of induction of apoptotic biomarkers, a caspase-independent activity and an equal efficacy in both apoptosis-sensitive and -resistant colorectal cancers. This validated their apoptosis-independent modes-of-action, paving the way as potential candidates for the treatment of highly-refractory cancer phenotypes.
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Affiliation(s)
- Mun Juinn Chow
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore .
| | - Mohammad Alfiean
- School of Chemistry and Life Sciences , Nanyang Polytechnic , Singapore
| | - Giorgia Pastorin
- Department of Pharmacy , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- NUS Graduate School for Integrative Sciences and Engineering , Singapore . ; Tel: +65 6516 5131
| | - Christian Gaiddon
- Université de Strasbourg , Strasbourg , France
- U1113 INSERM , 3 Avenue Molière , Strasbourg 67200 , France
| | - Wee Han Ang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore .
- NUS Graduate School for Integrative Sciences and Engineering , Singapore . ; Tel: +65 6516 5131
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157
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Liu SY, Xu LY, Liu CY, Ren ZG, Young DJ, Lang JP. Efficient alkylation of ketones with primary alcohols catalyzed by ruthenium(II)/P,N ligand complexes. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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158
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Deng Z, Gao P, Yu L, Ma B, You Y, Chan L, Mei C, Chen T. Ruthenium complexes with phenylterpyridine derivatives target cell membrane and trigger death receptors-mediated apoptosis in cancer cells. Biomaterials 2017; 129:111-126. [PMID: 28340357 DOI: 10.1016/j.biomaterials.2017.03.017] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/10/2017] [Accepted: 03/11/2017] [Indexed: 01/04/2023]
Abstract
Elucidation of the communication between metal complexes and cell membrane may provide useful information for rational design of metal-based anticancer drugs. Herein we synthesized a novel class of ruthenium (Ru) complexes containing phtpy derivatives (phtpy = phenylterpyridine), analyzed their structure-activity relationship and revealed their action mechanisms. The result showed that, the increase in the planarity of hydrophobic Ru complexes significantly enhanced their lipophilicity and cellular uptake. Meanwhile, the introduction of nitro group effectively improved their anticancer efficacy. Further mechanism studies revealed that, complex (2c), firstly accumulated on cell membrane and interacted with death receptors to activate extrinsic apoptosis signaling pathway. The complex was then transported into cell cytoplasm through transferrin receptor-mediated endocytosis. Most of the intracellular 2c accumulated in cell plasma, decreasing the level of cellular ROS, inducing the activation of caspase-9 and thus intensifying the apoptosis. At the same time, the residual 2c can translocate into cell nucleus to interact with DNA, induce DNA damage, activate p53 pathway and enhance apoptosis. Comparing with cisplatin, 2c possesses prolonged circulation time in blood, comparable antitumor ability and importantly, much lower toxicity in vivo. Taken together, this study uncovers the role of membrane receptors in the anticancer actions of Ru complexes, and provides fundamental information for rational design of membrane receptor targeting anticancer drugs.
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Affiliation(s)
- Zhiqin Deng
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Pan Gao
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Lianling Yu
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Bin Ma
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Yuanyuan You
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Leung Chan
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Chaoming Mei
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Tianfeng Chen
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
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159
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Soetens M, Drouet F, Riant O. (η5-Pentamethylcyclopentadienyl)iridium Complex Catalyzed Imine Reductions Utilizing the Biomimetic 1,4-NAD(P)H Cofactor andN-Benzyl-1,4-dihydronicotinamide as the Hydride-Transfer Agent. ChemCatChem 2017. [DOI: 10.1002/cctc.201601307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mathieu Soetens
- Institute of Condensed Matter and Nanosciences (IMCN); Université catholique de Louvain; 1, Place Louis Pasteur 1348 Louvain-la-Neuve Belgium
| | - Fleur Drouet
- Institute of Condensed Matter and Nanosciences (IMCN); Université catholique de Louvain; 1, Place Louis Pasteur 1348 Louvain-la-Neuve Belgium
| | - Olivier Riant
- Institute of Condensed Matter and Nanosciences (IMCN); Université catholique de Louvain; 1, Place Louis Pasteur 1348 Louvain-la-Neuve Belgium
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160
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Gaiddon C, Pfeffer M. The Fate of Cycloruthenated Compounds: From C-H Activation to Innovative Anticancer Therapy. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601216] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christian Gaiddon
- University of Strasbourg; U1113 Inserm; 3 av. Molière 67200 Strasbourg France
| | - Michel Pfeffer
- University of Strasbourg; UMR 7177 CNRS; 4, rue Blaise Pascal 67000 Strasbourg France
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161
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Yang L, Bose S, Ngo AH, Do LH. Innocent But Deadly: Nontoxic Organoiridium Catalysts Promote Selective Cancer Cell Death. ChemMedChem 2017; 12:292-299. [PMID: 28052592 DOI: 10.1002/cmdc.201600638] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/02/2017] [Indexed: 12/25/2022]
Abstract
We demonstrate that nontoxic organoiridum complexes can selectively chemosensitize cancer cells toward platinum antiproliferative agents. Treatment of human cancer cells (breast, colon, eye/retina, head/neck, lung, ovary, and blood) with the iridium chemosensitizers led to lowering of the 50 % growth inhibition concentration (IC50 ) of the Pt drug carboplatin by up to ∼30-50 %. Interestingly, non-cancer cells were mostly resistant to the chemosensitizing effects of the iridium complexes. Cell culture studies indicate that cancer cells that were administered with Ir show significantly higher reactive oxygen species concentrations as well as NAD+ /NADH ratios (oxidized vs. reduced nicotinamide adenine dinucleotide) than Ir-treated non-cancer cells. These biochemical changes are consistent with a catalytic transfer hydrogenation cycle involving the formation of iridium-hydride species from the reaction of the iridium catalysts with NADH and subsequent oxidation in air to generate hydrogen peroxide.
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Affiliation(s)
- Lu Yang
- Department of Chemistry, University of Houston, 4800 Calhoun Road, Houston, TX, 77004, USA
| | - Sohini Bose
- Department of Chemistry, University of Houston, 4800 Calhoun Road, Houston, TX, 77004, USA
| | - Anh H Ngo
- Department of Chemistry, University of Houston, 4800 Calhoun Road, Houston, TX, 77004, USA
| | - Loi H Do
- Department of Chemistry, University of Houston, 4800 Calhoun Road, Houston, TX, 77004, USA
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162
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Carmona M, Rodríguez R, Lahoz FJ, García-Orduña P, Cativiela C, López JA, Carmona D. Half-sandwich complexes of iridium and ruthenium containing cysteine-derived ligands. Dalton Trans 2017; 46:962-976. [PMID: 28009875 DOI: 10.1039/c6dt04341k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dimers [{(ηn-ring)MCl}2(μ-Cl)2] ((ηn-ring)M = (η5-C5Me5)Ir, (η6-p-MeC6H4iPr)Ru) react with the modified cysteines S-benzyl-l-cysteine (HL1) or S-benzyl-α-methyl-l-cysteine (HL2) affording cationic complexes of the formula [(ηn-ring)MCl(κ2N,S-HL)]Cl (1, 2) in good yield. Addition of NaHCO3 to complexes 1 and 2 gave equilibrium mixtures of neutral [(ηn-ring)MCl(κ2N,O-L)] (3, 4) and cationic [(ηn-ring)M(κ3N,O,S-L)]Cl (6Cl, 7Cl) complexes. Similar mixtures were obtained in one-pot reaction by successive addition of the modified cysteine and NaHCO3 to the above formulated dimers. Addition of the N-Boc substituted cysteine derivative S-benzyl-N-Boc-l-cysteine (HL3) and NaHCO3 to the dimers [{(ηn-ring)MCl}2(μ-Cl)2] affords the neutral compounds [(ηn-ring)MCl(κ2O,S-L3)] ((ηn-ring)M = (η5-C5Me5)Ir (5a), (η6-p-MeC6H4iPr)Ru (5b)). Complexes of the formula [(ηn-ring)MCl(κ3N,O,S-L)][SbF6] (6Sb-8Sb), in which the cysteine derivative acts as a tridentate chelate ligand, can be prepared by adding one equivalent of AgSbF6 to the solutions of compounds 5 or to the mixtures of complexes 3/6Cl and 4/7Cl. The amide proton of compounds 8aSb and 8bSb can be removed by addition of NaHCO3 affording the neutral complexes [(ηn-ring)M(κ3N,O,S-L3-H)] ((ηn-ring)M = (η5-C5Me5)Ir (9a), (η6-p-MeC6H4iPr)Ru (9b)). Complexes 9a and 9b can also be prepared by reacting the dimers [{(ηn-ring)MCl}2(μ-Cl)2] with HL3 and two equivalents of NaHCO3. The absolute configuration of the complexes has been established by spectroscopic and diffractometric means including the crystal structure determination of (RIr,RC,RS)-[(η5-C5Me5)Ir(κ3N,O,S-L1)][SbF6] (6aSb). The thermodynamic parameters associated with the epimerization at sulphur that the iridium compound [(η5-C5Me5)Ir(κ3N,O,S-L3-H)] (9a) undergoes have been determined through variable temperature 1H NMR studies.
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Affiliation(s)
- María Carmona
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Ricardo Rodríguez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Fernando J Lahoz
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Pilar García-Orduña
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Carlos Cativiela
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Orgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - José A López
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Daniel Carmona
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de Química Inorgánica, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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163
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Chrzanowska M, Katafias A, Impert O, Kozakiewicz A, Surdykowski A, Brzozowska P, Franke A, Zahl A, Puchta R, van Eldik R. Structure and reactivity of [RuII(terpy)(N^N)Cl]Cl complexes: consequences for biological applications. Dalton Trans 2017; 46:10264-10280. [DOI: 10.1039/c7dt01669g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ligand substitution reactions of [RuII(terpy)(N^N)Cl]Cl, where N^N = bipy and en, and the corresponding aqua complexes were studied in detail, including the crystal and solution structures of the chlorido complexes. The chlorido complex undergoes spontaneous aquation that can only be prevented using high chloride concentrations (>2 M).
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Affiliation(s)
| | - Anna Katafias
- Faculty of Chemistry
- N. Copernicus University
- 87-100 Toruń
- Poland
| | - Olga Impert
- Faculty of Chemistry
- N. Copernicus University
- 87-100 Toruń
- Poland
| | | | | | | | - Alicja Franke
- Department of Chemistry and Pharmacy
- University of Erlangen-Nuremberg
- 91058 Erlangen
- Germany
| | - Achim Zahl
- Department of Chemistry and Pharmacy
- University of Erlangen-Nuremberg
- 91058 Erlangen
- Germany
| | - Ralph Puchta
- Department of Chemistry and Pharmacy
- University of Erlangen-Nuremberg
- 91058 Erlangen
- Germany
- Computer Chemistry Center
| | - Rudi van Eldik
- Faculty of Chemistry
- N. Copernicus University
- 87-100 Toruń
- Poland
- Department of Chemistry and Pharmacy
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164
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Biancalana L, Zacchini S, Ferri N, Lupo MG, Pampaloni G, Marchetti F. Tuning the cytotoxicity of ruthenium(ii) para-cymene complexes by mono-substitution at a triphenylphosphine/phenoxydiphenylphosphine ligand. Dalton Trans 2017; 46:16589-16604. [DOI: 10.1039/c7dt03385k] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The cytotoxic activities of novel Ru(ii) arene complexes with variably mono-substituted phosphine ligands have been assessed towards MDA-MB-231 and A2780 cancer cell lines.
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Affiliation(s)
- Lorenzo Biancalana
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- I-40136 Bologna
- Italy
| | - Nicola Ferri
- Dipartimento di Scienze del Farmaco
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Maria Giovanna Lupo
- Dipartimento di Scienze del Farmaco
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
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165
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Mitra R, Sridevi VS, Somasundaram K, Samuelson AG. Photophysical and Biological Studies with Organometallic Ruthenium Complexes of Selenodiazole Ligands. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0292-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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166
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Abstract
Reduced nicotinamide adenine dinucleotide (NADH) can generate a ruthenium-hydride intermediate that catalyzes the reduction of O2 to H2O2, which endows it with potent anticancer properties. A catalyst that could access a Ru-H intermediate using oxidized nicotinamide adenine dinucleotide (NAD+) as the H- source, however, could draw upon a supply of reducing equivalents 1000-fold more abundant than NADH, which would enable significantly greater H2O2 production. Herein, it is demonstrated, using the reduction of ABTS•- to ABTS2-, that NAD+ can function as a reductant. Mechanistic evidence is presented that suggests a Ru-H intermediate is formed via β-hydride elimination from a ribose subunit in NAD+. The insight gained from the heretofore unknown ability of NAD+ to function as a reductant and H- donor may lead to undiscovered biological carbohydrate oxidation pathways and new chemotherapeutic strategies.
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Affiliation(s)
| | - Andrew G Tennyson
- Center for Optical Materials Science and Engineering Technologies , Anderson, South Carolina 29625, United States
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167
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Htet Y, Tennyson AG. Catalytic Radical Reduction in Aqueous Solution by a Ruthenium Hydride Intermediate. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yamin Htet
- Department of Chemistry Clemson University Clemson SC 29634 USA
| | - Andrew G. Tennyson
- Department of Chemistry Clemson University Clemson SC 29634 USA
- Department of Materials Science and Engineering Clemson University Clemson SC 29634 USA
- Center for Optical Materials Science and Engineering Technologies 91 Technology Drive Anderson SC 29625 USA
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168
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Scalcon V, Top S, Lee HZS, Citta A, Folda A, Bindoli A, Leong WK, Salmain M, Vessières A, Jaouen G, Rigobello MP. Osmocenyl-tamoxifen derivatives target the thioredoxin system leading to a redox imbalance in Jurkat cells. J Inorg Biochem 2016; 160:296-304. [DOI: 10.1016/j.jinorgbio.2016.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/17/2016] [Accepted: 04/03/2016] [Indexed: 01/27/2023]
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169
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Mahey S, Kumar R, Arora R, Mahajan J, Arora S, Bhardwaj R, Thukral AK. Effect of cobalt(II) chloride hexahydrate on some human cancer cell lines. SPRINGERPLUS 2016; 5:930. [PMID: 27386374 PMCID: PMC4929113 DOI: 10.1186/s40064-016-2405-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 05/24/2016] [Indexed: 12/23/2022]
Abstract
The present study investigates the anti-proliferative and apoptosis inducing mechanism of CoCl2·6H2O in PC-3 cancer cell line. Preliminary, three different forms of cobalt i.e., cobaltous (CoCl2·6H2O), macro-Co(II,III) oxide and nano-Co(II,III) oxide were screened for antiproliferative activity in PC-3 cell line. The CoCl2·6H2O being the most effective antiproliferative agent, hence it was further tested against lung (A549), prostrate (PC-3) and brain (IMR-32) cell lines. Human embryonic kidney cell line (293T) was used as a normal cell line to compare the toxicity of CoCl2·6H2O. The CoCl2·6H2O induced morphological and anatomical changes in PC-3 cancer cell which were studied using light, confocal and scanning electron microscopy. The lactate dehydrogenase was estimated which showed mild necrotic mode of cell death. The Annexin/PI staining confirmed the apoptotic mode of cell death in PC-3 cells. Further, production of reaction of reactive oxygen species and changes in mitochondrial membrane potential was also assessed spectrofluorimetrically. The cell cycle arrest was also investigated using flow cytometery. Finally, the caspase activity was estimated in CoCl2·6H2O treated PC-3 cancer cell line. Interestingly, it was found that CoCl2·6H2O induces more cell death in cancerous cells as compared to normal non-cancerous cells. These findings presented CoCl2·6H2O as potential antiproliferative agent.
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Affiliation(s)
- Sonia Mahey
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Rakesh Kumar
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
- />Department of Botany, DAV University, Jalandhar, Punjab 144012 India
| | - Rohit Arora
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Jyoti Mahajan
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Saroj Arora
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Renu Bhardwaj
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Ashwani Kumar Thukral
- />Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab 143005 India
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170
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Wang Y, Richard MA, Top S, Dansette PM, Pigeon P, Vessières A, Mansuy D, Jaouen G. Ferrocenyl Quinone Methide-Thiol Adducts as New Antiproliferative Agents: Synthesis, Metabolic Formation from Ferrociphenols, and Oxidative Transformation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603931] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yong Wang
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
| | - Marie-Aude Richard
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
| | - Siden Top
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
| | - Patrick M. Dansette
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS; Université Paris Descartes, PRES Paris Cité Sorbonne; 45 rue des Saints Pères 75270 Paris Cedex 06 France
| | - Pascal Pigeon
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
| | - Anne Vessières
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
| | - Daniel Mansuy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS; Université Paris Descartes, PRES Paris Cité Sorbonne; 45 rue des Saints Pères 75270 Paris Cedex 06 France
| | - Gérard Jaouen
- Sorbonne Universités; UPMC Univ Paris 06; CNRS UMR 8232, IPCM 75005 Paris France
- PSL, Chimie ParisTech; 11 rue Pierre et Marie Curie 75005 Paris France
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171
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Wang Y, Richard MA, Top S, Dansette PM, Pigeon P, Vessières A, Mansuy D, Jaouen G. Ferrocenyl Quinone Methide-Thiol Adducts as New Antiproliferative Agents: Synthesis, Metabolic Formation from Ferrociphenols, and Oxidative Transformation. Angew Chem Int Ed Engl 2016; 55:10431-4. [PMID: 27276169 DOI: 10.1002/anie.201603931] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Indexed: 11/10/2022]
Abstract
Ferrociphenols (FCs) and their oxidized, electrophilic quinone methide metabolites (FC-QMs) are organometallic compounds related to tamoxifen that exhibit strong antiproliferative properties. To evaluate the reactivity of FC-QMs toward cellular nucleophiles, we studied their reaction with selected thiols. A series of new compounds resulting from the addition of these nucleophiles, the FC-SR adducts, were thus synthesized and completely characterized. Such conjugates are formed upon metabolism of FCs by liver microsomes in the presence of NADPH and thiols. Some of the FC-SR adducts exhibit antiproliferative properties comparable to those of their FC precursors. Under oxidizing conditions they either revert to their FC-QM precursors or transform into new quinone methides (QMs) containing the SR moiety, FC-SR-QM. These results provide interesting data about the reactivity and mechanism of antiproliferative effects of FCs, and also open the way to a new series of organometallic antitumor compounds.
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Affiliation(s)
- Yong Wang
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France.,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Marie-Aude Richard
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France.,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Siden Top
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France. .,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France.
| | - Patrick M Dansette
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, PRES Paris Cité Sorbonne, 45 rue des Saints Pères, 75270, Paris Cedex 06, France
| | - Pascal Pigeon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France.,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Anne Vessières
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France.,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Daniel Mansuy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, PRES Paris Cité Sorbonne, 45 rue des Saints Pères, 75270, Paris Cedex 06, France.
| | - Gérard Jaouen
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, IPCM, 75005, Paris, France. .,PSL, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005, Paris, France.
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172
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Htet Y, Tennyson AG. Catalytic Radical Reduction in Aqueous Solution by a Ruthenium Hydride Intermediate. Angew Chem Int Ed Engl 2016; 55:8556-60. [DOI: 10.1002/anie.201601887] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/03/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Yamin Htet
- Department of Chemistry Clemson University Clemson SC 29634 USA
| | - Andrew G. Tennyson
- Department of Chemistry Clemson University Clemson SC 29634 USA
- Department of Materials Science and Engineering Clemson University Clemson SC 29634 USA
- Center for Optical Materials Science and Engineering Technologies 91 Technology Drive Anderson SC 29625 USA
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173
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Okamoto Y, Köhler V, Paul CE, Hollmann F, Ward TR. Efficient In Situ Regeneration of NADH Mimics by an Artificial Metalloenzyme. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00258] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasunori Okamoto
- Department
of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland
| | - Valentin Köhler
- Department
of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland
| | - Caroline E. Paul
- Department
of Biotechnology, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
| | - Frank Hollmann
- Department
of Biotechnology, Delft University of Technology, Julianalaan 136, 2628BL Delft, The Netherlands
| | - Thomas R. Ward
- Department
of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland
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174
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Okamoto Y, Köhler V, Ward TR. An NAD(P)H-Dependent Artificial Transfer Hydrogenase for Multienzymatic Cascades. J Am Chem Soc 2016; 138:5781-4. [PMID: 27100673 DOI: 10.1021/jacs.6b02470] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Enzymes typically depend on either NAD(P)H or FADH2 as hydride source for reduction purposes. In contrast, organometallic catalysts most often rely on isopropanol or formate to generate the reactive hydride moiety. Here we show that incorporation of a Cp*Ir cofactor possessing a biotin moiety and 4,7-dihydroxy-1,10-phenanthroline into streptavidin yields an NAD(P)H-dependent artificial transfer hydrogenase (ATHase). This ATHase (0.1 mol%) catalyzes imine reduction with 1 mM NADPH (2 mol%), which can be concurrently regenerated by a glucose dehydrogenase (GDH) using only 1.2 equiv of glucose. A four-enzyme cascade consisting of the ATHase, the GDH, a monoamine oxidase, and a catalase leads to the production of enantiopure amines.
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Affiliation(s)
- Yasunori Okamoto
- Department of Chemistry, University of Basel , Spitalstrasse 51, CH-4056 Basel, Switzerland
| | - Valentin Köhler
- Department of Chemistry, University of Basel , Spitalstrasse 51, CH-4056 Basel, Switzerland
| | - Thomas R Ward
- Department of Chemistry, University of Basel , Spitalstrasse 51, CH-4056 Basel, Switzerland
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175
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Takemoto S, Yumoto Y, Matsuzaka H. Aminolysis of [Cp*Ru(μ-OEt)] 2 (Cp* = η 5 -C 5 Me 5 ) with sulfonamides: Synthesis of neutral, zwitterionic, and anionic Cp*Ru terminal sulfonamido complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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176
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Ngo AH, Ibañez M, Do LH. Catalytic Hydrogenation of Cytotoxic Aldehydes Using Nicotinamide Adenine Dinucleotide (NADH) in Cell Growth Media. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00395] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Anh H. Ngo
- Department of Chemistry, University of Houston, 4800 Calhoun
Road, Houston, Texas 77004, United States
| | - Miguel Ibañez
- Department of Chemistry, University of Houston, 4800 Calhoun
Road, Houston, Texas 77004, United States
| | - Loi H. Do
- Department of Chemistry, University of Houston, 4800 Calhoun
Road, Houston, Texas 77004, United States
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177
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Wills M. Imino Transfer Hydrogenation Reductions. Top Curr Chem (Cham) 2016; 374:14. [DOI: 10.1007/s41061-016-0013-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 02/13/2016] [Indexed: 10/22/2022]
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178
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Htet Y, Tennyson AG. Catalytic radical reduction in aqueous solution via oxidation of biologically-relevant alcohols. Chem Sci 2016; 7:4052-4058. [PMID: 30155048 PMCID: PMC6013915 DOI: 10.1039/c6sc00651e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 03/04/2016] [Indexed: 01/05/2023] Open
Abstract
An organoruthenium complex catalyzed radical reduction in aqueous solution via oxidation of amino acids, sugars, or citric acid cycle metabolites.
Metalloenzymes that normally perform catalytic antioxidant or radical-degrading functions, as well as small-molecule complexes that mimic them, can also exert pro-oxidant or radical-forming effects depending on the identity of the terminal reductant. Because nitroxyl radicals function as redox active cocatalysts in the aerobic oxidation of alcohols, we hypothesized that catalytic radical reduction could be achieved via the oxidation of biologically-relevant alcohols. Herein we report an organoruthenium complex (Ru1) that catalyzed reduction of 2,2′-azino-bis(3-ethylbenzo-thiazoline-6-sulfonate) radical monoanion (ABTS˙–) to ABTS2– in phosphate buffered saline (pH 7.4) using MeOH, EtOH, i-PrOH, serine, threonine, glucose, arabinose, methyl lactate or dimethyl malate as the terminal reductant. Replacing either the C–H or O–H groups of a –CHOH– moiety resulted in the loss of ABTS˙– reducing ability. Moreover, in conjunction with an alcohol terminal reductant, Ru1 was able to inhibit the oxidation of ABTS2– by H2O2 and horseradish peroxidase, even after multiple successive challenges with excess H2O2 or ABTS˙–. Collectively, these results demonstrate that Ru1 inhibits the oxidative formation of and catalyzes the reduction of radicals in aqueous solution via oxidation of biologically-relevant alcohols.
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Affiliation(s)
- Yamin Htet
- Department of Chemistry , Clemson University , Clemson , SC 29634 , USA .
| | - Andrew G Tennyson
- Department of Chemistry , Clemson University , Clemson , SC 29634 , USA . .,Department of Materials Science and Engineering , Clemson University , Clemson , SC 29634 , USA.,Center for Optical Materials Science and Engineering Technologies , Anderson , SC 29625 , USA
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179
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Hill HAO, Sadler PJ. Bringing inorganic chemistry to life with inspiration from R. J. P. Williams. J Biol Inorg Chem 2016; 21:5-12. [PMID: 26841789 PMCID: PMC4771813 DOI: 10.1007/s00775-016-1333-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/04/2016] [Indexed: 12/22/2022]
Abstract
Our appreciation of the scholarly ideas and thinking of Bob Williams is illustrated here by a few of the areas in which he inspired us. His journey to bring inorganic chemistry to life began with an early interest in analytical chemistry, rationalising the relative stabilities of metal coordination complexes (The Irving-Williams Series), and elucidating the organometallic redox chemistry of vitamin B12. He (and Vallee) recognised that metal ions are in energised (entatic) states in proteins and enzymes, which themselves are dynamic structures of rods and springs. He played a key role in helping Rosenberg to pave the road toward the clinic for the anticancer drug cisplatin. He believed that evolution is not just dependent on DNA, but also on the metallome. Organisms and the environment are one system: does DNA code directly for all the essential elements of life?
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Affiliation(s)
- H Allen O Hill
- Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK.
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK.
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180
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Wang X, Yiu HHP. Heterogeneous Catalysis Mediated Cofactor NADH Regeneration for Enzymatic Reduction. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02820] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiaodong Wang
- Chemical Engineering, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
| | - Humphrey H. P. Yiu
- Chemical Engineering, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom
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181
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Štarha P, Habtemariam A, Romero-Canelón I, Clarkson GJ, Sadler PJ. Hydrosulfide Adducts of Organo-Iridium Anticancer Complexes. Inorg Chem 2016; 55:2324-31. [DOI: 10.1021/acs.inorgchem.5b02697] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Pavel Štarha
- Regional
Centre of Advanced Technologies and Materials, Department of Inorganic
Chemistry, Faculty of Science, Palacký University, 17. listopadu
12, 77146 Olomouc, Czech Republic
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U. K
| | - Abraha Habtemariam
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U. K
| | - Isolda Romero-Canelón
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U. K
| | - Guy J. Clarkson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U. K
| | - Peter J. Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U. K
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182
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Raza MK, Mitra K, Shettar A, Basu U, Kondaiah P, Chakravarty AR. Photoactive platinum(ii) β-diketonates as dual action anticancer agents. Dalton Trans 2016; 45:13234-43. [DOI: 10.1039/c6dt02590k] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyclometallated platinum(ii) β-diketonates show significant photocytotoxicity in skin-keratinocyte HaCaT cells [IC50: ∼10 μM (visible light, 400–700 nm), ≥60 μM (dark)].
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Affiliation(s)
- Md Kausar Raza
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Koushambi Mitra
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Abhijith Shettar
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Uttara Basu
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Paturu Kondaiah
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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183
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Fu Y, Sanchez-Cano C, Soni R, Romero-Canelon I, Hearn JM, Liu Z, Wills M, Sadler PJ. The contrasting catalytic efficiency and cancer cell antiproliferative activity of stereoselective organoruthenium transfer hydrogenation catalysts. Dalton Trans 2016; 45:8367-78. [DOI: 10.1039/c6dt01242f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The rapidly growing area of catalytic ruthenium chemistry has provided new complexes with potential as organometallic anticancer agents with novel mechanisms of action.
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Affiliation(s)
- Ying Fu
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | | | - Rina Soni
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | | | | | - Zhe Liu
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | - Martin Wills
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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184
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Ni L, Wang J, Liu C, Fan J, Sun Y, Zhou Z, Diao G. An asymmetric binuclear zinc(ii) complex with mixed iminodiacetate and phenanthroline ligands: synthesis, characterization, structural conversion and anticancer properties. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00072j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A water-soluble asymmetric binuclear zinc(ii) complex with mixed iminodiacetate and 1,10-phenanthroline ligands exhibited promising anticancer activity and low toxicity, suggesting potential as a chemotherapeutic agent.
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Affiliation(s)
- Lubin Ni
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- People's Republic of China
| | - Juan Wang
- College of Medicine
- Yangzhou University
- Yangzhou 225001
- People's Republic of China
| | - Chang Liu
- College of Medicine
- Yangzhou University
- Yangzhou 225001
- People's Republic of China
| | - Jinhong Fan
- College of Medicine
- Yangzhou University
- Yangzhou 225001
- People's Republic of China
| | - Yun Sun
- College of Medicine
- Yangzhou University
- Yangzhou 225001
- People's Republic of China
| | - Zhaohui Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | - Guowang Diao
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- People's Republic of China
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185
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Štarha P, Hanousková L, Trávníček Z. Organometallic Half-Sandwich Dichloridoruthenium(II) Complexes with 7-Azaindoles: Synthesis, Characterization and Elucidation of Their Anticancer Inactivity against A2780 Cell Line. PLoS One 2015; 10:e0143871. [PMID: 26606245 PMCID: PMC4659567 DOI: 10.1371/journal.pone.0143871] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 11/10/2015] [Indexed: 12/23/2022] Open
Abstract
A series of organometallic half-sandwich dichloridoruthenium(II) complexes of the general formula [Ru(η6-p-cym)(naza)Cl2] (1-8; p-cym = p-cymene; naza = 7-azaindole or its derivatives) was synthesised and fully characterized by elemental analysis, mass spectrometry, and infrared and multinuclear NMR spectroscopy. A single-crystal X-ray structural analysis of [Ru(η6-p-cym)(2Me4Claza)Cl2] (6) revealed a typical piano-stool geometry with an N7-coordination mode of 2-methyl-4-chloro-7-azaindole (2Me4Claza). The complexes have been found to be inactive against human ovarian cancer cell line A2780 up to the highest applied concentration (IC50 > 50.0 μM). An inactivity of the complexes is caused by their instability in water-containing solvents connected with a release of the naza N-donor ligand, as proved by the detailed 1H NMR, mass spectrometry and fluorescence experiments.
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Affiliation(s)
- Pavel Štarha
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Lucie Hanousková
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- * E-mail:
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186
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Enyedy ÉA, Mészáros JP, Dömötör O, Hackl CM, Roller A, Keppler BK, Kandioller W. Comparative solution equilibrium studies on pentamethylcyclopentadienyl rhodium complexes of 2,2ʹ-bipyridine and ethylenediamine and their interaction with human serum albumin. J Inorg Biochem 2015; 152:93-103. [DOI: 10.1016/j.jinorgbio.2015.08.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 12/21/2022]
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187
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Soldevila-Barreda JJ, Habtemariam A, Romero-Canelón I, Sadler PJ. Half-sandwich rhodium(III) transfer hydrogenation catalysts: Reduction of NAD(+) and pyruvate, and antiproliferative activity. J Inorg Biochem 2015; 153:322-333. [PMID: 26601938 DOI: 10.1016/j.jinorgbio.2015.10.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 10/05/2015] [Accepted: 10/07/2015] [Indexed: 11/25/2022]
Abstract
Organometallic complexes have the potential to behave as catalytic drugs. We investigate here Rh(III) complexes of general formula [(Cp(x))Rh(N,N')(Cl)], where N,N' is ethylenediamine (en), 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen) or N-(2-aminoethyl)-4-(trifluoromethyl)benzenesulfonamide (TfEn), and Cp(x) is pentamethylcyclopentadienyl (Cp*), 1-phenyl-2,3,4,5-tetramethylcyclopentadienyl (Cp(xPh)) or 1-biphenyl-2,3,4,5-tetramethyl cyclopentadienyl (Cp(xPhPh)). These complexes can reduce NAD(+) to NADH using formate as a hydride source under biologically-relevant conditions. The catalytic activity decreased in the order of N,N-chelated ligand bpy > phen > en with Cp* as the η(5)-donor. The en complexes (1-3) became more active with extension to the Cp(X) ring, whereas the activity of the phen (7-9) and bpy (4-6) compounds decreased. [Cp*Rh(bpy)Cl](+) (4) showed the highest catalytic activity, with a TOF of 37.4±2h(-1). Fast hydrolysis of the chlorido complexes 1-10 was observed by (1)H NMR (<10min at 310K). The pKa* values for the aqua adducts were determined to be ca. 8-10. Complexes 1-9 also catalysed the reduction of pyruvate to lactate using formate as the hydride donor. The efficiency of the transfer hydrogenation reactions was highly dependent on the nature of the chelating ligand and the Cp(x) ring. Competition reactions between NAD(+) and pyruvate for reduction by formate catalysed by 4 showed a preference for reduction of NAD(+). The antiproliferative activity of complex 3 towards A2780 human ovarian cancer cells increased by up to 50% when administered in combination with non-toxic doses of formate, suggesting that transfer hydrogenation can induce reductive stress in cancer cells.
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Affiliation(s)
| | - Abraha Habtemariam
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Isolda Romero-Canelón
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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188
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Editorial of Special Issue Ruthenium Complex: The Expanding Chemistry of the Ruthenium Complexes. Molecules 2015; 20:17244-74. [PMID: 26393560 PMCID: PMC6332046 DOI: 10.3390/molecules200917244] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/09/2015] [Accepted: 09/11/2015] [Indexed: 12/18/2022] Open
Abstract
Recent trends in Ru complex chemistry are surveyed with emphasis on the development of anticancer drugs and applications in catalysis, polymers, materials science and nanotechnology.
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189
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Ritter C, Nett N, Acevedo‐Rocha CG, Lonsdale R, Kräling K, Dempwolff F, Hoebenreich S, Graumann PL, Reetz MT, Meggers E. Bioorthogonale enzymatische Aktivierung maskierter Verbindungen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506739] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cornelia Ritter
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
| | - Nathalie Nett
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
| | - Carlos G. Acevedo‐Rocha
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
- Max‐Planck‐Institut für Kohlenforschung, Kaiser‐Wilhelm‐Platz 1, 45470 Mülheim an der Ruhr (Deutschland)
- LOEWE‐Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans‐Meerwein‐Straße, 35043 Marburg (Deutschland)
- Max‐Planck‐Institut für terrestrische Mikrobiologie, Karl‐von‐Frisch‐Straße 10, 35043 Marburg (Deutschland)
| | - Richard Lonsdale
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
- Max‐Planck‐Institut für Kohlenforschung, Kaiser‐Wilhelm‐Platz 1, 45470 Mülheim an der Ruhr (Deutschland)
| | - Katja Kräling
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
| | - Felix Dempwolff
- LOEWE‐Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans‐Meerwein‐Straße, 35043 Marburg (Deutschland)
| | - Sabrina Hoebenreich
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
| | - Peter L. Graumann
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
- LOEWE‐Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans‐Meerwein‐Straße, 35043 Marburg (Deutschland)
| | - Manfred T. Reetz
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
- Max‐Planck‐Institut für Kohlenforschung, Kaiser‐Wilhelm‐Platz 1, 45470 Mülheim an der Ruhr (Deutschland)
| | - Eric Meggers
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße 4, 35043 Marburg (Deutschland)
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)
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190
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Ritter C, Nett N, Acevedo-Rocha CG, Lonsdale R, Kräling K, Dempwolff F, Hoebenreich S, Graumann PL, Reetz MT, Meggers E. Bioorthogonal Enzymatic Activation of Caged Compounds. Angew Chem Int Ed Engl 2015; 54:13440-3. [PMID: 26356324 DOI: 10.1002/anie.201506739] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 08/14/2015] [Indexed: 11/06/2022]
Abstract
Engineered cytochrome P450 monooxygenase variants are reported as highly active and selective catalysts for the bioorthogonal uncaging of propargylic and benzylic ether protected substrates, including uncaging in living E. coli. observed selectivity is supported by induced-fit docking and molecular dynamics simulations. This proof-of-principle study points towards the utility of bioorthogonal enzyme/protecting group pairs for applications in the life sciences.
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Affiliation(s)
- Cornelia Ritter
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany)
| | - Nathalie Nett
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany)
| | - Carlos G Acevedo-Rocha
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany).,Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr (Germany).,LOEWE Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans-Meerwein-Straße, 35043 Marburg (Germany).,Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Straße 10, 35043 Marburg (Germany)
| | - Richard Lonsdale
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany).,Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr (Germany)
| | - Katja Kräling
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany)
| | - Felix Dempwolff
- LOEWE Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans-Meerwein-Straße, 35043 Marburg (Germany)
| | - Sabrina Hoebenreich
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany)
| | - Peter L Graumann
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany).,LOEWE Zentrum für Synthetische Mikrobiologie (SYNMIKRO), Hans-Meerwein-Straße, 35043 Marburg (Germany)
| | - Manfred T Reetz
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany). .,Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr (Germany).
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg (Germany). .,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (P. R. China).
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191
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192
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Affiliation(s)
- Dong Wang
- ISM, Université de Bordeaux, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Didier Astruc
- ISM, Université de Bordeaux, 351 Cours de la Libération, 33405 Talence Cedex, France
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193
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Approaches to the design of catalytic metallodrugs. Curr Opin Chem Biol 2015; 25:172-83. [PMID: 25765750 DOI: 10.1016/j.cbpa.2015.01.024] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 01/26/2015] [Indexed: 01/10/2023]
Abstract
Metal ions are known to act as catalytic centres in metallo-enzymes. On the other hand, low-molecular-weight metal complexes are widely used as catalysts in chemical systems. However, small catalysts do not have a large protein ligand to provide substrate selectivity and minimize catalyst poisoning. Despite the challenges that the lack of a protein ligand might pose, some success in the use of metal catalysts for biochemical transformations has been reported. Here, we present a brief overview of such reports, especially involving catalytic reactions in cells. Examples include C-C bond formation, deprotection and functional group modification, degradation of biomolecules, and redox modulation. We discuss four classes of catalytic redox modulators: photosensitizers, superoxide dismutase mimics, thiol oxidants, and transfer hydrogenation catalysts. Catalytic metallodrugs offer the prospect of low-dose therapy and a challenging new design strategy for future exploration.
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194
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Abstract
The mechanisms of action of ferrocifens depend on several features: chemical structures, used concentrations, nature of cancer cells.
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Affiliation(s)
- Gérard Jaouen
- Sorbonne Universités
- UPMC Univ Paris 06
- IPCM
- F-75005 Paris
- France
| | - Anne Vessières
- Sorbonne Universités
- UPMC Univ Paris 06
- IPCM
- F-75005 Paris
- France
| | - Siden Top
- Sorbonne Universités
- UPMC Univ Paris 06
- IPCM
- F-75005 Paris
- France
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