1
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Frei A, Elliott AG, Kan A, Dinh H, Bräse S, Bruce AE, Bruce MR, Chen F, Humaidy D, Jung N, King AP, Lye PG, Maliszewska HK, Mansour AM, Matiadis D, Muñoz MP, Pai TY, Pokhrel S, Sadler PJ, Sagnou M, Taylor M, Wilson JJ, Woods D, Zuegg J, Meyer W, Cain AK, Cooper MA, Blaskovich MAT. Metal Complexes as Antifungals? From a Crowd-Sourced Compound Library to the First In Vivo Experiments. JACS AU 2022; 2:2277-2294. [PMID: 36311838 PMCID: PMC9597602 DOI: 10.1021/jacsau.2c00308] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/01/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
There are currently fewer than 10 antifungal drugs in clinical development, but new fungal strains that are resistant to most current antifungals are spreading rapidly across the world. To prevent a second resistance crisis, new classes of antifungal drugs are urgently needed. Metal complexes have proven to be promising candidates for novel antibiotics, but so far, few compounds have been explored for their potential application as antifungal agents. In this work, we report the evaluation of 1039 metal-containing compounds that were screened by the Community for Open Antimicrobial Drug Discovery (CO-ADD). We show that 20.9% of all metal compounds tested have antimicrobial activity against two representative Candida and Cryptococcus strains compared with only 1.1% of the >300,000 purely organic molecules tested through CO-ADD. We identified 90 metal compounds (8.7%) that show antifungal activity while not displaying any cytotoxicity against mammalian cell lines or hemolytic properties at similar concentrations. The structures of 21 metal complexes that display high antifungal activity (MIC ≤1.25 μM) are discussed and evaluated further against a broad panel of yeasts. Most of these have not been previously tested for antifungal activity. Eleven of these metal complexes were tested for toxicity in the Galleria mellonella moth larva model, revealing that only one compound showed signs of toxicity at the highest injected concentration. Lastly, we demonstrated that the organo-Pt(II) cyclooctadiene complex Pt1 significantly reduces fungal load in an in vivo G. mellonella infection model. These findings showcase that the structural and chemical diversity of metal-based compounds can be an invaluable tool in the development of new drugs against infectious diseases.
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Affiliation(s)
- Angelo Frei
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
- Department
of Chemistry, Biochemistry & Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012Bern, Switzerland
| | - Alysha G. Elliott
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Alex Kan
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Hue Dinh
- School
of Natural Sciences, ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, NSW2109, Australia
| | - Stefan Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute
of Technology, Fritz-Haber-Weg 6, 76131Karlsruhe, Germany
- Institute
of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, 76344Eggenstein-Leopoldshafen, Germany
| | - Alice E. Bruce
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Mitchell R. Bruce
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Feng Chen
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, CoventryCV4 7AL, U.K.
| | - Dhirgam Humaidy
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Nicole Jung
- Karlsruhe
Nano Micro Facility (KNMF), Karlsruhe Institute
of Technology, Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Germany
- Institute
of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, 76344Eggenstein-Leopoldshafen, Germany
| | - A. Paden King
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York14853, United States
| | - Peter G. Lye
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Hanna K. Maliszewska
- School
of Chemistry, University of East Anglia, Norwich Research Park, NorwichNR4 7TJ, U.K.
| | - Ahmed M. Mansour
- Chemistry
Department, Faculty of Science, Cairo University, Giza12613, Egypt
| | - Dimitris Matiadis
- Institute
of Biosciences & Applications, National
Centre for Scientific Research “Demokritos”, 15310Athens, Greece
| | - María Paz Muñoz
- School
of Chemistry, University of East Anglia, Norwich Research Park, NorwichNR4 7TJ, U.K.
| | - Tsung-Yu Pai
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Shyam Pokhrel
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Peter J. Sadler
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, CoventryCV4 7AL, U.K.
| | - Marina Sagnou
- Institute
of Biosciences & Applications, National
Centre for Scientific Research “Demokritos”, 15310Athens, Greece
| | - Michelle Taylor
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Justin J. Wilson
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York14853, United States
| | - Dean Woods
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Johannes Zuegg
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Wieland Meyer
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Amy K. Cain
- School
of Natural Sciences, ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, NSW2109, Australia
| | - Matthew A. Cooper
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Mark A. T. Blaskovich
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
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2
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Üstün E, Şakar D, Çol Ayvaz M, Sönmez Çelebi M, Ertürk Ö. CO-Releasing, Antioxidant, Antibacterial, Zeta Potential, Theoretical, and Electrochemical Analysis of [Mn(CO)3(bpy)L]OTf Type Complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3
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Mansour AM, Khaled RM, Khaled E, Ahmed SK, Ismael OS, Zeinhom A, Magdy H, Ibrahim SS, Abdelfatah M. Ruthenium(II) carbon monoxide releasing molecules: Structural perspective, antimicrobial and anti-inflammatory properties. Biochem Pharmacol 2022; 199:114991. [DOI: 10.1016/j.bcp.2022.114991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 01/12/2023]
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4
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Hu J, Cao T, Yuan B, Guo Y, Zhang J, Zhao J, Zhao X, Hou H. Benzimidazole-quinoline-based copper complexes: Exploration for their possible antitumor mechanism. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115563] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Ibrahim NM, Khaled RM, Ragheb MA, Radacki K, Farag AM, Mansour AM. Light-activated cytotoxicity of dicarbonyl Ru(II) complexes with a benzimidazole coligand towards breast cancer. Dalton Trans 2021; 50:15389-15399. [PMID: 34647551 DOI: 10.1039/d1dt02296b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction between [RuCl2(CO)2]n and 1H-benzimidazol-2-ylmethyl-(N-phenyl)amine ligands (LR) functionalized with various electron-donating and electron-withdrawing substituents on the phenyl ring (R = H, 4-CH3, 4-Cl, 4-COOCH3, and 3-COOCH3) afforded the dark-stable photoactivatable carbon monoxide prodrugs of the general formula [RuCl2(CO)2LR]. Release of the CO molecules from the Ru(II) compounds was examined by monitoring the electronic and IR spectra upon illumination at 365 nm. A noticeable decrease in the intensities of the two characteristic ν(CO) modes for Ru(CO)II2 species, and the growth of two new bands for the mono-carbonyl species and free CO, were the main features of the photolysis profiles. The cytotoxicity of the complexes towards breast cancer (MCF-7) cells was assessed with and without illumination at 365 nm. All the complexes except that with a 4-COOCH3 group (IC50 = 45.08 ± 3.5 μM) are nontoxic under dark conditions. Upon illumination, all the compounds acquired cytotoxicity in the following order: H > 4-COOCH3 > 4-CH3 > 4-Cl > 3-COOCH3. Investigation of the cytotoxicity of the CO-depleted fragments showed that the light-induced cytotoxicity can be attributed to the liberated CO and CO-depleted metal fragments, including the liberated benzimidazole ligands.
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Affiliation(s)
- Nourhan M Ibrahim
- Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
| | - Rabaa M Khaled
- Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
| | - Mohamed A Ragheb
- Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
| | - Krzysztof Radacki
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Ahmad M Farag
- Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
| | - Ahmed M Mansour
- Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
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6
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Lin Y, Betts H, Keller S, Cariou K, Gasser G. Recent developments of metal-based compounds against fungal pathogens. Chem Soc Rev 2021; 50:10346-10402. [PMID: 34313264 DOI: 10.1039/d0cs00945h] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This review provides insight into the rapidly expanding field of metal-based antifungal agents. In recent decades, the antibacterial resistance crisis has caused reflection on many aspects of public health where weaknesses in our medicinal arsenal may potentially be present - including in the treatment of fungal infections, particularly in the immunocompromised and those with underlying health conditions where mortality rates can exceed 50%. Combination of organic moieties with known antifungal properties and metal ions can lead to increased bioavailability, uptake and efficacy. Development of such organometallic drugs may alleviate pressure on existing antifungal medications. Prodigious antimicrobial moieties such as azoles, Schiff bases, thiosemicarbazones and others reported herein lend themselves easily to the coordination of a host of metal ions, which can vastly improve the biocidal activity of the parent ligand, thereby extending the library of antifungal drugs available to medical professionals for treatment of an increasing incidence of fungal infections. Overall, this review shows the impressive but somewhat unexploited potential of metal-based compounds to treat fungal infections.
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Affiliation(s)
- Yan Lin
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Harley Betts
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Sarah Keller
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Kevin Cariou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
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7
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8
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Spectroscopic and antimicrobial activity of photoactivatable tricarbonyl Mn(I) terpyridine compounds. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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9
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Modulation of Amyloidogenic Peptide Aggregation by Photoactivatable CO-Releasing Ruthenium(II) Complexes. Pharmaceuticals (Basel) 2020; 13:ph13080171. [PMID: 32751396 PMCID: PMC7464691 DOI: 10.3390/ph13080171] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 01/19/2023] Open
Abstract
Three Ru(II)-based CO-releasing molecules featuring bidentate benzimidazole and terpyridine derivatives as ligands were investigated for their ability to modulate the aggregation process of the second helix of the C-terminal domain of nucleophosmin 1, namely nucleophosmin 1 (NPM1)264-277, a model amyloidogenic system, before and after irradiation at 365 nm. Thioflavin T (ThT) binding assays and UV/Vis absorption spectra indicate that binding of the compounds to the peptide inhibits its aggregation and that the inhibitory effect increases upon irradiation (half maximal effective concentration (EC50) values in the high micromolar range). Electrospray ionization mass spectrometry data of the peptide in the presence of one of these compounds confirm that the modulation of amyloid aggregation relies on the formation of adducts obtained when the Ru compounds react with the peptide upon releasing of labile ligands, like chloride and carbon monoxide. This mechanism of action explains the subtle different behavior of the three compounds observed in ThT experiments. Overall, data support the hypothesis that metal-based CO releasing molecules can be used to develop metal-based drugs with potential application as anti-amyloidogenic agents.
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10
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McMahon S, Rajagopal A, Amirjalayer S, Halpin Y, Fitzgerald-Hughes D, Buma WJ, Woutersen S, Long C, Pryce MT. Photo-activated CO-release in the amino tungsten Fischer carbene complex, [(CO) 5WC(NC 4H 8)Me], picosecond time resolved infrared spectroscopy, time-dependent density functional theory, and an antimicrobial study. J Inorg Biochem 2020; 208:111071. [PMID: 32434119 DOI: 10.1016/j.jinorgbio.2020.111071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 01/18/2023]
Abstract
Picosecond time-resolved infrared spectroscopy was used to probe the photo-induced early state dynamics preceding CO loss in the Fischer carbene complex, [(CO)5WC(NC4H8)CH3]. Time-dependent density functional theory calculations were employed to help in understanding the photochemical and photophysical processes leading to CO-loss. Electrochemical initiated CO release was quantified using gas chromatography. The potential of [(CO)5WC(NC4H8)CH3], as an antimicrobial agent under irradiation conditions was studied using a Staphylococcus aureus strain.
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Affiliation(s)
- Suzanne McMahon
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Ashwene Rajagopal
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland; Clinical Microbiology, Royal College of Surgeons in Ireland, RCSI Education and Research, Beaumont Hospital, Beaumont, Dublin 9, Ireland
| | - Saeed Amirjalayer
- Physikalisches Institut, Center for Nanotechnology (CeNTech) and Center for Multiscale Theory & Computation (CMTC), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
| | - Yvonne Halpin
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Deirdre Fitzgerald-Hughes
- Clinical Microbiology, Royal College of Surgeons in Ireland, RCSI Education and Research, Beaumont Hospital, Beaumont, Dublin 9, Ireland
| | - Wybren Jan Buma
- University of Amsterdam, Van't Hoff Institute for Molecular Sciences, Science Park 904, 1098 XH, Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Sander Woutersen
- University of Amsterdam, Van't Hoff Institute for Molecular Sciences, Science Park 904, 1098 XH, Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Conor Long
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Mary T Pryce
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland.
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11
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Mansour AM, Shehab OR, Radacki K. Role of Sulfonate Appendage in the Protein Binding Affinity of Half-Sandwich Ruthenium(II)(η6
-p
-Cym) Complexes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901089] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ahmed M. Mansour
- Chemistry Department; Faculty of Science; Cairo University; Gamma Street, Giza 12613 Cairo Egypt
| | - Ola R. Shehab
- Chemistry Department; Faculty of Science; Cairo University; Gamma Street, Giza 12613 Cairo Egypt
| | - Krzysztof Radacki
- Institut für Anorganische Chemie; Faculty of Science; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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12
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Cassemiro BG, Santos JS, Oliveira WX, Pereira‐Maia EC, Galvão BR, Pim WD, Silva‐Caldeira PP. Dinuclear copper(II) complex with a benzimidazole derivative: Crystal structure, theoretical calculations, and cytotoxic activity. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bruna G. Cassemiro
- Department of ChemistryCentro Federal de Educação Tecnológica de Minas Gerais Avenida Amazonas, 5253 30421‐169 Belo Horizonte MG Brazil
| | - Jefferson S. Santos
- Department of ChemistryCentro Federal de Educação Tecnológica de Minas Gerais Avenida Amazonas, 5253 30421‐169 Belo Horizonte MG Brazil
| | - Willian X.C. Oliveira
- Department of ChemistryUniversidade Federal de Minas Gerais Avenida Antônio Carlos, 6627 31270‐901 Belo Horizonte MG Brazil
| | - Elene C. Pereira‐Maia
- Department of ChemistryUniversidade Federal de Minas Gerais Avenida Antônio Carlos, 6627 31270‐901 Belo Horizonte MG Brazil
| | - Breno R.L. Galvão
- Department of ChemistryCentro Federal de Educação Tecnológica de Minas Gerais Avenida Amazonas, 5253 30421‐169 Belo Horizonte MG Brazil
| | - Walace D. Pim
- Department of ChemistryCentro Federal de Educação Tecnológica de Minas Gerais Avenida Amazonas, 5253 30421‐169 Belo Horizonte MG Brazil
| | - Priscila P. Silva‐Caldeira
- Department of ChemistryCentro Federal de Educação Tecnológica de Minas Gerais Avenida Amazonas, 5253 30421‐169 Belo Horizonte MG Brazil
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13
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Mansour AM, Radacki K. Antimicrobial properties of half-sandwich Ir(iii) cyclopentadienyl complexes with pyridylbenzimidazole ligands. Dalton Trans 2020; 49:4491-4501. [DOI: 10.1039/d0dt00451k] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ethyl group determined the toxicity of pyridylbenzimidazole Ir(iii) compounds and exchange of the group with sulfonate led to diminishing of the antibacterial activity. Increasing the metal content per complex, 3, gave rise to a compound with no toxicity.
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Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Krzysztof Radacki
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- D-97074 Würzburg
- Germany
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14
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Mansour AM, Ragab MS. DNA/lysozyme binding propensity and nuclease properties of benzimidazole/2,2'-bipyridine based binuclear ternary transition metal complexes. RSC Adv 2019; 9:30879-30887. [PMID: 35529371 PMCID: PMC9072361 DOI: 10.1039/c9ra07188a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 09/25/2019] [Indexed: 12/21/2022] Open
Abstract
In the present contribution, new binuclear ternary complexes; [M2(bpy)4L](ClO4)4 (M = Co(ii) (1) and Ni(ii) (2); bpy = 2,2'-bipyridine; L = 1,1'-(hexane-1,6-diyl)bis[2-(pyridin-2-yl)1H-benzimidazole] and [Cu2(bpy)2(OH2)2L](BF4)4 (3) were synthesized, characterized and screened for their antimicrobial activity and cytotoxicity against human liver carcinoma cells (HepG-2) as well as non-malignant human embryonic kidney cells (HEK-293). The structural studies were complemented by density functional theory (DFT) calculations. DNA binding of 1-3 was spectrophotometrically studied. The DNA cleavage ability of 1-3 towards the supercoiled plasmid DNA (pBR322 DNA) was examined through gel electrophoresis. Compound 3 has the highest cytotoxic activity (IC50 = 3.5 μg mL-1) against HepG-2 among the investigated complexes and is non cytotoxic to noncancerous HEK-293. Complexes (1 and 2) exhibited toxicity to HEK-293 with IC50 values of 30.3 and 23.5 μg mL-1 in that order. While compound 1 showed antifungal activity against Cryptococcus neoformans, complex 2 exhibited its toxicity against Candida albicans.
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Affiliation(s)
- Ahmed M Mansour
- Department of Chemistry, Faculty of Science, Cairo University Gamma Street, Giza Cairo 12613 Egypt
| | - Mona S Ragab
- Department of Chemistry, Faculty of Science, Cairo University Gamma Street, Giza Cairo 12613 Egypt
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15
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Mansour AM, Shehab OR. Pyridylbenzimidazole-Based Gold(III) Complexes: Lysozyme Metalation, DNA Binding Studies, and Biological Activity. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900155] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ahmed M. Mansour
- Chemistry Department; Faculty of Science, Gamma Street, Giza; Cairo University; 12613 Cairo Egypt
| | - Ola R. Shehab
- Chemistry Department; Faculty of Science, Gamma Street, Giza; Cairo University; 12613 Cairo Egypt
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16
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Kubeil M, Joshi T, Wood BR, Stephan H. Synthesis, Structural Characterization and Photodecarbonylation Study of a Dicarbonyl Ruthenium(II)-Bisquinoline Complex. ChemistryOpen 2019; 8:637-642. [PMID: 31139553 PMCID: PMC6530819 DOI: 10.1002/open.201900111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/03/2019] [Indexed: 02/01/2023] Open
Abstract
A photoactivatable ruthenium(II) carbonyl complex mer,cis‐[Ru(II)Cl(BisQ)(CO)2]PF62 was prepared using a tridentate bisquinoline ligand (BisQ=(2,6‐diquinolin‐2‐yl)pyridin). Compound 2 was thoroughly characterized by standard analytical methods and single crystal X‐ray diffraction. The crystal structure of the complex cation reveals a distorted octahedral geometry. The decarbonylation upon exposure to 350 and 420 nm light was monitored by UV/VIS absorbance and Fourier transform infrared spectroscopies in acetonitrile and 1 % (v/v) DMSO in water, respectively. The kinetic of the photodecarbonylation has been elucidated by multivariate curve resolution alternating least‐squares analysis. The stepwise decarbonylation follows a serial mechanism. The first decarbonylation occurs very quickly whereas the second decarbonylation step proceeds more slowly. Moreover, the second rate constant is lower in 1 % (v/v) DMSO in water than in acetonitrile. In comparison to 350 nm irradiation, exposure to 420 nm light in acetonitrile results in a lower second rate constant.
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Affiliation(s)
- Manja Kubeil
- Institute of Radiopharmaceutical Cancer Research Helmholtz - Zentrum Dresden - Rossendorf Bautzner Landstrasse 400 01328 Dresden Germany
| | - Tanmaya Joshi
- Institute of Radiopharmaceutical Cancer Research Helmholtz - Zentrum Dresden - Rossendorf Bautzner Landstrasse 400 01328 Dresden Germany
| | - Bayden R Wood
- School of Chemistry and Centre for Biospectroscopy Monash University Clayton, Victoria 3800 Australia
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research Helmholtz - Zentrum Dresden - Rossendorf Bautzner Landstrasse 400 01328 Dresden Germany
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17
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Mansour AM, Ragab MS. Spectroscopic and DFT studies of photoactivatable Mn(I) tricarbonyl complexes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4944] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry, Faculty of ScienceCairo University Gamma Street Giza 12613 Egypt
| | - Mona S. Ragab
- Department of Chemistry, Faculty of ScienceCairo University Gamma Street Giza 12613 Egypt
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18
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Mansour AM. Green-Light-Induced PhotoCORM: Lysozyme Binding Affinity towards MnI
and ReI
Carbonyl Complexes and Biological Activity Evaluation. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801055] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ahmed M. Mansour
- Chemistry Department; Faculty of Science; Cairo University; Gamma Street 12613 Giza, Cairo Egypt
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19
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Mansour AM. Antifungal activity, DNA and lysozyme binding affinity of Pd(II) and Pt(II) complexes bearing N,N-pyridylbenzimidazole ligand. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1517256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
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20
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Mansour AM, Shehab OR. {Ru(CO)x}-core terpyridine complexes: Lysozyme binding affinity, DNA and photoinduced carbon monoxide releasing properties. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Mansour AM, Friedrich A. IClick cycloaddition reaction of light-triggered manganese(i) carbonyl complexes. NEW J CHEM 2018. [DOI: 10.1039/c8nj01838c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
For a binuclear blue-light-induced CO-releasing manganese(i) tricarbonyl complex bearing bidentate ligand, the effect of the ancillary ligand on the dark stability and photolysis process was studied.
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Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry
- Faculty of Science
- Cairo University
- Cairo 12613
- Egypt
| | - Alexandra Friedrich
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- D-97074 Würzburg
- Germany
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