1
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Gil-Moles M, O'Beirne C, Esarev IV, Lippmann P, Tacke M, Cinatl J, Bojkova D, Ott I. Silver N-heterocyclic carbene complexes are potent uncompetitive inhibitors of the papain-like protease with antiviral activity against SARS-CoV-2. RSC Med Chem 2023; 14:1260-1271. [PMID: 37484561 PMCID: PMC10357933 DOI: 10.1039/d3md00067b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/03/2023] [Indexed: 07/25/2023] Open
Abstract
The ongoing SARS-CoV-2 pandemic has caused a high demand for novel innovative antiviral drug candidates. Despite promising results, metal complexes have been relatively unexplored as antiviral agents in general and in particular against SARS-CoV-2. Here we report on silver NHC complexes with chloride or iodide counter ligands that are potent inhibitors of the SARS-CoV-2 papain-like protease (PLpro) but inactive against 3C-like protease (3CLpro) as another SARS-CoV-2 protease. Mechanistic studies on a selected complex confirmed zinc removal from a zinc binding domain of PLpro as relevant factor of their activity. In addition, enzyme kinetic experiments revealed that the complex is an uncompetitive inhibitor and with this rare type of inhibition it offers great pharmacological advantages in terms selectivity. The silver NHC complexes with iodide ligands showed very low or absent host cell toxicity and triggered strong effects on viral replication in cells infected with SARS-CoV-2, making them promising future antiviral drug candidates.
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Affiliation(s)
- Maria Gil-Moles
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig Beethovenstr. 55 38106 Braunschweig Germany
- Departamento de Química, Universidad de La Rioja, Centro de Investigación de Síntesis Química (CISQ), Complejo Científico Tecnológico 26004 Logroño Spain
| | - Cillian O'Beirne
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig Beethovenstr. 55 38106 Braunschweig Germany
| | - Igor V Esarev
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig Beethovenstr. 55 38106 Braunschweig Germany
| | - Petra Lippmann
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig Beethovenstr. 55 38106 Braunschweig Germany
| | - Matthias Tacke
- School of Chemistry, University College Dublin Belfield Dublin 4 Ireland
| | - Jindrich Cinatl
- Institute of Medical Virology, Universitätsklinikum Frankfurt Paul-Ehrlich-Str. 40 60596 Frankfurt Germany
| | - Denisa Bojkova
- Institute of Medical Virology, Universitätsklinikum Frankfurt Paul-Ehrlich-Str. 40 60596 Frankfurt Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig Beethovenstr. 55 38106 Braunschweig Germany
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2
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Yang Y, Du LQ, Huang Y, Liang CJ, Qin QP, Liang H. Platinum(II) 5-substituted-8-hydroxyquinoline coordination compounds induces mitophagy-mediated apoptosis in A549/DDP cancer cells. J Inorg Biochem 2023; 241:112152. [PMID: 36736244 DOI: 10.1016/j.jinorgbio.2023.112152] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 01/30/2023]
Abstract
For the first time, two new mononuclear platinum(II) coordination compounds, [Pt(L1)(DMSO)Cl] (PtL1) and [Pt(L2)(DMSO)Cl] (PtL2) with the 5-(ethoxymethyl)-8-hydroxyquinoline hydrochloride (H-L1) and 5-bromo-8-hydroxyquinoline (H-L2) have been synthesized and characterized. The cytotoxic activity of PtL1 and PtL2 were screened in both healthy HL-7702 cell line and cancer cell lines, human lung adenocarcinoma A549 cancer cells and cisplatin-resistant lung adenocarcinoma A549/DDP cancer cells (A549R), and were compared to that of the H-L1, H-L2, H-L3 ligands and 8-hydroxyquinoline (H-L3) platinum(II) complex [Pt(L3)(DMSO)Cl] (PtL3). MTT results showed that PtL1 bearing one deprotonated L1 ligand against A549R was more potent by 8.8-48.6 fold than that of PtL2 and PtL3 complexes but was more selective toward healthy HL-7702 cells. In addition, PtL1 and PtL3 overcomes tumour drug resistance by significantly inducing mitophagy and causing the change of the related proteins expression, which leads to cell apoptosis. Moreover, the inhibitory effect of PtL1 on A549 xenograft tumour was 68.2%, which was much higher than that of cisplatin (cisPt, ca. 50.0%), without significantly changing nude mice weight in comparison with the untreated group. This study helps to explore the potential of the platinum(II) 5-substituted-8-hydroxyquinoline coordination compounds for the new Pt-resistant cancer therapy.
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Affiliation(s)
- Yan Yang
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Ling-Qi Du
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Yan Huang
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Chun-Jie Liang
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China.
| | - Qi-Pin Qin
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China; State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China.
| | - Hong Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China.
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3
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Impact of Hydrophobic Chains in Five-Coordinate Glucoconjugate Pt(II) Anticancer Agents. Int J Mol Sci 2023; 24:ijms24032369. [PMID: 36768690 PMCID: PMC9916762 DOI: 10.3390/ijms24032369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 01/27/2023] Open
Abstract
This study describes new platinum(II) cationic five-coordinate complexes (1-R,R') of the formula [PtR(NHC)(dmphen)(ethene)]CF3SO3 (dmphen = 2,9-dimethyl-1,10-phenanthroline), containing in their axial positions an alkyl group R (methyl or octyl) and an imidazole-based NHC-carbene ligand with a substituent R' of variable length (methyl or octyl) on one nitrogen atom. The Pt-carbene bond is stable both in DMSO and in aqueous solvents. In DMSO, a gradual substitution of dmphen and ethene is observed, with the formation of a square planar solvated species. Octanol/water partitioning studies have revealed the order of hydrophobicity of the complexes (1-Oct,Me > 1-Oct,Oct > 1-Me,Oct > 1-Me,Me). Their biological activity was investigated against two pairs of cancer and non-cancer cell lines. The tested drugs were internalized in cancer cells and able to activate the apoptotic pathway. The reactivity of 1-Me,Me with DNA and protein model systems was also studied using UV-vis absorption spectroscopy, fluorescence, and X-ray crystallography. The compound binds DNA and interacts in various ways with the model protein lysozyme. Remarkably, structural data revealed that the complex can bind lysozyme via non-covalent interactions, retaining its five-coordinate geometry.
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4
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Bär SI, Schleser SW, Oberhuber N, Herrmann A, Schlotte L, Weber SE, Schobert R. Trans-[bis(benzimidazol-2-ylidene)dichlorido]platinum(II) complexes with peculiar modes of action and activity against cisplatin-resistant cancer cells. J Inorg Biochem 2023; 238:112028. [PMID: 36274479 DOI: 10.1016/j.jinorgbio.2022.112028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/27/2022] [Accepted: 10/11/2022] [Indexed: 11/05/2022]
Abstract
Three series of cis- and trans-[bis(benzimidazol-2-ylidene)dichlorido]platinum(II) and cis-[(benzimidazol-2-ylidene)(DMSO)dichlorido]platinum(II) complexes were synthesised and screened for cytotoxicity against six human cancer cell lines. Depending on their N-alkyl and 5-alkoxycarbonyl substituents, two-digit nanomolar to single-digit micromolar IC50 values against cancer cell lines intrinsically resistant to or ill-responding to cisplatin were reached by both cis- and trans-configured complexes. The stability of the complexes under aqueous biotest conditions was shown via 1H and 195Pt NMR monitoring to be dependent on their configuration and their N-substituents. Localisation studies employing click reactions with 1-alkyne- or cyclopropene-tagged derivatives revealed that the cis-complexes accumulated in the cell nuclei and the trans-complexes in the mitochondria. While the most active cis-complexes showed modes of action akin to those of cisplatin, the most active trans-complexes differed from cisplatin by much lower rates of cellular uptake and ROS production, and by their non-interaction with the cell cycle and the DNA of cancer cells. Thus, we identified structural key elements for the synthesis of optimised trans-configured NHC platinum(II) complexes with high activity also against cisplatin-refractory cancer cells.
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Affiliation(s)
- Sofia I Bär
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Sebastian W Schleser
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Natalie Oberhuber
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Alexander Herrmann
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Luca Schlotte
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Stefanie E Weber
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany.
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5
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Farasat A, Labella L, Marchetti F, Samaritani S. Addition of aliphatic, secondary amines to coordinated isonitriles. N-acyclic carbene (NAC) platinum(II) complexes from trans-[Pt(μ-Cl)Cl(PPh3)]2. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6
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Karaca EÖ, Çiftçi O, Özdemir İ, Karabıyık H, Karabıyık H, Gürbüz N, Özdemir İ, Mansour L, Youssef A, Hamdi N. Crystal structure, optical properties, spectroscopic characterization and density functional theory studies of a new rhodium(i)-imidazolidin-2-ylidene complexes: Synthesis, characterization and cytotoxic properties. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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A study of the reactivity and transformations of Pd/NHC complexes in the reaction of oxidative C−H acetoxylation. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3526-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Maliszewski BP, Ritacco I, Beliš M, Hashim II, Tzouras NV, Caporaso L, Cavallo L, Van Hecke K, Nahra F, Cazin CSJ, Nolan SP. A green route to platinum N-heterocyclic carbene complexes: mechanism and expanded scope. Dalton Trans 2022; 51:6204-6211. [PMID: 35357386 DOI: 10.1039/d2dt00504b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sustainable and facile weak-base synthetic route to platinum N-heterocyclic carbene (NHC) complexes is disclosed. The mechanism of this reaction is also elucidated via experimental and computational investigations. This straightforward protocol is then used for the synthesis of novel Pt(II)-NHC complexes and its utility is further explored to access key Pt(0)-NHC precatalysts.
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Affiliation(s)
- Benon P Maliszewski
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium. .,VITO (Flemish Institute for Technological Research), Separation and Conversion Technology, Boeretang 200, 2400 Mol, Belgium
| | - Ida Ritacco
- Dipartimento di Chimica e Biologia, Univeristy of Salerno, Via Papa Paolo Giovanni II, Fisciano, I-84084, Italy
| | - Marek Beliš
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
| | - Ishfaq Ibni Hashim
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
| | - Nikolaos V Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
| | - Lucia Caporaso
- Dipartimento di Chimica e Biologia, Univeristy of Salerno, Via Papa Paolo Giovanni II, Fisciano, I-84084, Italy
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
| | - Fady Nahra
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium. .,VITO (Flemish Institute for Technological Research), Separation and Conversion Technology, Boeretang 200, 2400 Mol, Belgium
| | - Catherine S J Cazin
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Ghent, Belgium.
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9
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Fang X, Yang J, Zhang Y, Lv X, Wang X, Song N. Crystal structure of dimethanolato-k 2
O:O-bis(1-((2-methyl-1 H-benzo[ d]imidazol-1-yl)methyl)-1 H-benzo[ d][1,2,3]triazole- κN)-bis(thiocyanato- κN)dicopper(II), C 34H 32Cu 2N 12O 2S 2. Z KRIST-NEW CRYST ST 2021. [DOI: 10.1515/ncrs-2021-0045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C34H32Cu2N12O2S2, triclinic,
P
1
‾
$P‾{1}$
(no. 2), a = 7.7970(7) Å, b = 9.6110(9) Å, c = 12.7629(12) Å, α = 71.544(8)°, β = 79.322(8)°, γ = 83.734(8)°, Z = 1, V = 890.21(14) Å3, R
gt
(F) = 0.0634, wR
ref
(F
2) = 0.1827, T = 291(2) K.
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Affiliation(s)
- Xiang Fang
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
| | - Jing Yang
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
| | - Ya‐Wen Zhang
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
| | - Xin‐Ya Lv
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
| | - Xia Wang
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
| | - Ning Song
- College of Pharmacy, Henan University of Chinese Medicine , Zhengzhou 450046 , P. R. China
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10
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Novel Benzimidazole- Platinum(II) Complexes: Synthesis, Characterization, Antimicrobial and Anticancer Activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129785] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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11
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Lettl C, Schindele F, Testolin G, Bär A, Rehm T, Brönstrup M, Schobert R, Bilitewski U, Haas R, Fischer W. Inhibition of Type IV Secretion Activity and Growth of Helicobacter pylori by Cisplatin and Other Platinum Complexes. Front Cell Infect Microbiol 2020; 10:602958. [PMID: 33392108 PMCID: PMC7775389 DOI: 10.3389/fcimb.2020.602958] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022] Open
Abstract
Type IV secretion systems are protein secretion machineries that are frequently used by pathogenic bacteria to inject their virulence factors into target cells of their respective hosts. In the case of the human gastric pathogen Helicobacter pylori, the cytotoxin-associated gene (Cag) type IV secretion system is considered a major cause for severe disease, such as gastric cancer, and thus constitutes an attractive target for specific treatment options against H. pylori infections. Here, we have used a Cag type IV secretion reporter assay for screening a repurposing compound library for inhibitors targeting this system. We found that the antitumor agent cisplatin, a platinum coordination complex that kills target cells by formation of DNA crosslinks, is a potent inhibitor of the Cag type IV secretion system. Strikingly, we found that this inhibitory activity of cisplatin depends on a ligand exchange reaction which incorporates a solvent molecule (dimethylsulfoxide) into the complex, a modification which is known to be deleterious for DNA crosslinking, and for its anticancer activity. We extended our analysis to several analogous platinum complexes containing N-heterocyclic carbene, as well as DMSO or other ligands, and found varying inhibitory activities toward the Cag system which were not congruent with their DNA-binding properties, suggesting that protein interactions may cause the inhibitory effect. Inhibition experiments under varying conditions revealed effects on adherence and bacterial viability as well, and showed that the type IV secretion-inhibitory capacity of platinum complexes can be inactivated by sulfur-containing reagents and in complex bacterial growth media. Taken together, our results demonstrate DNA binding-independent inhibitory effects of cisplatin and other platinum complexes against different H. pylori processes including type IV secretion.
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Affiliation(s)
- Clara Lettl
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich Site, Munich, Germany
| | - Franziska Schindele
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich Site, Munich, Germany
| | - Giambattista Testolin
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,German Center for Infection Research (DZIF), Hannover-Braunschweig Site, Braunschweig, Germany
| | - Alexander Bär
- Organic Chemistry Laboratory, University Bayreuth, Bayreuth, Germany
| | - Tobias Rehm
- Organic Chemistry Laboratory, University Bayreuth, Bayreuth, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,German Center for Infection Research (DZIF), Hannover-Braunschweig Site, Braunschweig, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Bayreuth, Germany
| | - Ursula Bilitewski
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,German Center for Infection Research (DZIF), Hannover-Braunschweig Site, Braunschweig, Germany
| | - Rainer Haas
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich Site, Munich, Germany
| | - Wolfgang Fischer
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Center for Infection Research (DZIF), Munich Site, Munich, Germany
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12
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Maliszewski BP, Tzouras NV, Guillet SG, Saab M, Beliš M, Van Hecke K, Nahra F, Nolan SP. A general protocol for the synthesis of Pt-NHC (NHC = N-heterocyclic carbene) hydrosilylation catalysts. Dalton Trans 2020; 49:14673-14679. [DOI: 10.1039/d0dt03480k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A simple synthetic route, making use of inexpensive and environment-friendly solvent/reagents, is described leading to [Pt(NHC)(L)Cl2] and [Pt(NHC)(dvtms)] (L = DMS, DMSO, Py; dvtms = divynyltetramethylsiloxane) catalysts.
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Affiliation(s)
- Benon P. Maliszewski
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Sébastien G. Guillet
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Marek Beliš
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Fady Nahra
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
- VITO (Flemish Institute for Technological Research)
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry
- Ghent University
- 9000 Ghent
- Belgium
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13
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Rothemund M, Bär SI, Rehm T, Kostrhunova H, Brabec V, Schobert R. Antitumoral effects of mitochondria-targeting neutral and cationic cis-[bis(1,3-dibenzylimidazol-2-ylidene)Cl(L)]Pt(ii) complexes. Dalton Trans 2020; 49:8901-8910. [DOI: 10.1039/d0dt01664k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
cis-[Bis(1,3-dibenzylimidazol-2-ylidene)PtIICl(L)] complexes target mitochondria regardless of charge and size of ligands L, yet show different anticancer effects.
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Affiliation(s)
| | - Sofia I. Bär
- Organic Chemistry Laboratory
- University of Bayreuth
- 95440 Bayreuth
- Germany
| | - Tobias Rehm
- Organic Chemistry Laboratory
- University of Bayreuth
- 95440 Bayreuth
- Germany
| | - Hana Kostrhunova
- Czech Academy of Sciences
- Institute of Biophysics
- CZ-61265
- Czech Republic
| | - Viktor Brabec
- Czech Academy of Sciences
- Institute of Biophysics
- CZ-61265
- Czech Republic
| | - Rainer Schobert
- Organic Chemistry Laboratory
- University of Bayreuth
- 95440 Bayreuth
- Germany
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14
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Rehm T, Rothemund M, Dietel T, Kempe R, Schobert R. Synthesis, structures and cytotoxic effects in vitro of cis- and trans-[Pt IVCl 4(NHC) 2] complexes and their Pt II precursors. Dalton Trans 2019; 48:16358-16365. [PMID: 31624819 DOI: 10.1039/c9dt02438g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four new bis(N,N-dialkylbenzimidazol-2-ylidene)dichlorido platinum(ii) complexes 2 featuring N-alkyl substituents of increasing size (a: Me, b: Et, c: n-butyl, d: n-octyl) were synthesised and oxidised with PhICl2 to give the corresponding [PtIVCl4(N,N-dialkylbenzimidazol-2-ylidene)2] complexes 4 as potential anticancer prodrugs. The known bis(N,N-dibenzylimidazol-2-ylidene)dichlorido platinum(ii) complex 1 was likewise oxidised to [PtIVCl4(N,N-dibenzylimidazol-2-ylidene)2] 3. In contrast, oxidation of complexes 1 and 2 with H2O2 or hypochlorites, or exchange of chlorido for hydroxo ligands in tetrachlorido complexes 4 failed to give isolable complexes of type [PtIVCl4-n(OH)n(NHC)2]. In MTT assays the [PtIICl2(NHC)2]/[PtIVCl4(NHC)2] complex couples 1/3, 2c/4c, and trans-2c/trans-4c, bearing either N-benzyl or N-butyl substituents, each showed similar single-digit micromolar IC50 values against at least three out of five human cancer cell lines, presumably due to an intracellular reduction of the PtIV complexes to their active PtII congeners. Unlike cisplatin, whose anticancer effect requires functional p53, each of them was active both in wildtype and in p53-negative HCT116 colon carcinoma cells. In ethidium bromide saturation assays with isolated DNA, cis-(bis-NHC)PtII complexes such as 1 caused morphological DNA changes more pronounced than those initiated by cisplatin, while the corresponding cis-(bis-NHC)PtIV complexes such as 3 interacted with DNA in a less structure-modifying way.
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Affiliation(s)
- Tobias Rehm
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Matthias Rothemund
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Thomas Dietel
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rhett Kempe
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
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15
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González JJ, Ortega E, Rothemund M, Gold M, Vicente C, de Haro C, Bautista D, Schobert R, Ruiz J. Luminescent Gold(I) Complexes of 1-Pyridyl-3-anthracenylchalcone Inducing Apoptosis in Colon Carcinoma Cells and Antivascular Effects. Inorg Chem 2019; 58:12954-12963. [DOI: 10.1021/acs.inorgchem.9b01901] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Juan Jesús González
- Departamento de Química Inorgánica, Facultad de Química, Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Enrique Ortega
- Departamento de Química Inorgánica, Facultad de Química, Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Matthias Rothemund
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30 95440 Bayreuth, Germany
| | - Madeleine Gold
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30 95440 Bayreuth, Germany
| | - Consuelo Vicente
- Departamento de Química Inorgánica, Facultad de Química, Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Concepción de Haro
- Departamento de Química Inorgánica, Facultad de Química, Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | | | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30 95440 Bayreuth, Germany
| | - José Ruiz
- Departamento de Química Inorgánica, Facultad de Química, Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
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16
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Platinum alkynyl complexes: Cellular uptake, inhibition of thioredoxin reductase and toxicity in zebrafish embryos. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118982] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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17
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Karaca EÖ, Çiftçi O, Özdemir İ, Yakali G, Aygün M, Gürbüz N, Özdemir İ. Platinum (II)
N
‐heterocyclic carbene complexes: Synthesis, characterization and cytotoxic properties. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4851] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Emine Özge Karaca
- Catalysis Research and Application Centerİnönü University 44280 Malatya Turkey
| | - Osman Çiftçi
- Department of PharmacologyPamukkale University Faculty of Medicine 20070 Denizli Turkey
| | - İlknur Özdemir
- Faculty of Science and Arts, Department of Chemistryİnönü University 4280 Malatya Turkey
| | - Gül Yakali
- Serik Gülsün‐Süleyman Süral Vocational School of Higher Education, Department of Opticianry ProgramAkdeniz University 07070‐Serik Antalya Turkey
| | - Muhittin Aygün
- Faculty of Sciences, Department of PhysicsDokuz Eylül University 35160‐Buca İzmir Turkey
| | - Nevin Gürbüz
- Catalysis Research and Application Centerİnönü University 44280 Malatya Turkey
- Faculty of Science and Arts, Department of Chemistryİnönü University 4280 Malatya Turkey
| | - İsmail Özdemir
- Catalysis Research and Application Centerİnönü University 44280 Malatya Turkey
- Faculty of Science and Arts, Department of Chemistryİnönü University 4280 Malatya Turkey
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18
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Zhu M, Song D, Liu N, Wang K, Su J, Xiong M, Zhang X, Xu Y, Gao E. Isomeric Effect on the anticancer Behavior of two Zinc (II) complexes based on 3,5‐bis(1‐imidazoly) pyridine: Experimental and Theoretical Approach. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Mingchang Zhu
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Da Song
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Ning Liu
- Liaoning Institute for Food Control (Liaoning Institute of Pharmaceutical Research) Shenyang 110015 China
| | - Kehua Wang
- School of Chemistry and Life ScienceAnshan Normal University Anshan China
| | - Junqi Su
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Meng Xiong
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Xi Zhang
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Yuang Xu
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
| | - Enjun Gao
- The key Laboratory of the Inorganic Molecule‐Based Chemistry of Liaoning Province, Laboratory of Coordination ChemistryShenyang University of Chemical Technology Shenyang 110142 China
- School of Chemical EngineeringUniversity of Science and Technology Liaoning Anshan 114051 China
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19
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Annunziata A, Cucciolito ME, Esposito R, Imbimbo P, Petruk G, Ferraro G, Pinto V, Tuzi A, Monti DM, Merlino A, Ruffo F. A highly efficient and selective antitumor agent based on a glucoconjugated carbene platinum(ii) complex. Dalton Trans 2019; 48:7794-7800. [DOI: 10.1039/c9dt01614g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A Pt(ii) complex with a glucosylated carbene shows very high in vitro cytotoxicity and selectivity toward malignant cells.
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