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Thamban Chandrika N, Green KD, Spencer AC, Tsodikov OV, Garneau-Tsodikova S. Discovery and development of novel substituted monohydrazides as potent antifungal agents. RSC Med Chem 2023; 14:1351-1361. [PMID: 37484566 PMCID: PMC10357949 DOI: 10.1039/d3md00167a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/30/2023] [Indexed: 07/25/2023] Open
Abstract
Novel substituted monohydrazides synthesized for this study displayed broad-spectrum activity against various fungal strains, including a panel of clinically relevant Candida auris strains. The activity of these compounds was either comparable or superior to amphotericin B against most of the fungal strains tested. These compounds possessed fungistatic activity in a time-kill assay and exhibited no mammalian cell toxicity. In addition, they prevented the formation of fungal biofilms. Even after repeated exposures, the Candida albicans ATCC 10231 (strain A) fungal strain did not develop resistance to these monohydrazides.
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Affiliation(s)
- Nishad Thamban Chandrika
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 South Limestone Street Lexington KY 40536-0596 USA
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 South Limestone Street Lexington KY 40536-0596 USA
| | - Abbygail C Spencer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 South Limestone Street Lexington KY 40536-0596 USA
| | - Oleg V Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 South Limestone Street Lexington KY 40536-0596 USA
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky 789 South Limestone Street Lexington KY 40536-0596 USA
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2
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Thamban Chandrika N, Dennis EK, Brubaker KR, Kwiatkowski S, Watt DS, Garneau-Tsodikova S. Broad-Spectrum Antifungal Agents: Fluorinated Aryl- and Heteroaryl-Substituted Hydrazones. ChemMedChem 2021; 16:124-133. [PMID: 33063957 PMCID: PMC10898509 DOI: 10.1002/cmdc.202000626] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/28/2020] [Indexed: 12/25/2022]
Abstract
Fluorinated aryl- and heteroaryl-substituted monohydrazones displayed excellent broad-spectrum activity against various fungal strains, including a panel of clinically relevant Candida auris strains relative to a control antifungal agent, voriconazole (VRC). These monohydrazones displayed less hemolysis of murine red blood cells than that of VRC at the same concentrations, possessed fungicidal activity in a time-kill study, and exhibited no mammalian cell cytotoxicity. In addition, these monohydrazones prevented the formation of biofilms that otherwise block antibiotic effectiveness and did not trigger the development of resistance when exposed to C. auris AR Bank # 0390 over 15 passages.
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Affiliation(s)
- Nishad Thamban Chandrika
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Emily K Dennis
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Katelyn R Brubaker
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Stefan Kwiatkowski
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - David S Watt
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
- Department of Molecular and Cellular Biochemistry, College of Medicine, University of Kentucky, Lexington, KY, 40536-0509, USA
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
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Howard KC, Dennis EK, Watt DS, Garneau-Tsodikova S. A comprehensive overview of the medicinal chemistry of antifungal drugs: perspectives and promise. Chem Soc Rev 2020; 49:2426-2480. [PMID: 32140691 DOI: 10.1039/c9cs00556k] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The emergence of new fungal pathogens makes the development of new antifungal drugs a medical imperative that in recent years motivates the talents of numerous investigators across the world. Understanding not only the structural families of these drugs but also their biological targets provides a rational means for evaluating the merits and selectivity of new agents for fungal pathogens and normal cells. An equally important aspect of modern antifungal drug development takes a balanced look at the problems of drug potency and drug resistance. The future development of new antifungal agents will rest with those who employ synthetic and semisynthetic methodology as well as natural product isolation to tackle these problems and with those who possess a clear understanding of fungal cell architecture and drug resistance mechanisms. This review endeavors to provide an introduction to a growing and increasingly important literature, including coverage of the new developments in medicinal chemistry since 2015, and also endeavors to spark the curiosity of investigators who might enter this fascinatingly complex fungal landscape.
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Affiliation(s)
- Kaitlind C Howard
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
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Dennis EK, Kim JH, Parkin S, Awuah SG, Garneau-Tsodikova S. Distorted Gold(I)–Phosphine Complexes as Antifungal Agents. J Med Chem 2019; 63:2455-2469. [DOI: 10.1021/acs.jmedchem.9b01436] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Emily K. Dennis
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Jong Hyun Kim
- Department of Chemistry, College of Arts and Sciences, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506-0055, United States
| | - Sean Parkin
- Department of Chemistry, College of Arts and Sciences, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506-0055, United States
| | - Samuel G. Awuah
- Department of Chemistry, College of Arts and Sciences, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506-0055, United States
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
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Molecular Docking Guided Grid-Independent Descriptor Analysis to Probe the Impact of Water Molecules on Conformational Changes of hERG Inhibitors in Drug Trapping Phenomenon. Int J Mol Sci 2019; 20:ijms20143385. [PMID: 31295848 PMCID: PMC6678931 DOI: 10.3390/ijms20143385] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/04/2019] [Accepted: 07/07/2019] [Indexed: 12/17/2022] Open
Abstract
Human ether a-go-go related gene (hERG) or KV11.1 potassium channels mediate the rapid delayed rectifier current (IKr) in cardiac myocytes. Drug-induced inhibition of hERG channels has been implicated in the development of acquired long QT syndrome type (aLQTS) and fatal arrhythmias. Several marketed drugs have been withdrawn for this reason. Therefore, there is considerable interest in developing better tests for predicting drugs which can block the hERG channel. The drug-binding pocket in hERG channels, which lies below the selectivity filter, normally contains K+ ions and water molecules. In this study, we test the hypothesis that these water molecules impact drug binding to hERG. We developed 3D QSAR models based on alignment independent descriptors (GRIND) using docked ligands in open and closed conformations of hERG in the presence (solvated) and absence (non-solvated) of water molecules. The ligand–protein interaction fingerprints (PLIF) scheme was used to summarize and compare the interactions. All models delineated similar 3D hERG binding features, however, small deviations of about ~0.4 Å were observed between important hotspots of molecular interaction fields (MIFs) between solvated and non-solvated hERG models. These small changes in conformations do not affect the performance and predictive power of the model to any significant extent. The model that exhibits the best statistical values was attained with a cryo_EM structure of the hERG channel in open state without water. This model also showed the best R2 of 0.58 and 0.51 for the internal and external validation test sets respectively. Our results suggest that the inclusion of water molecules during the docking process has little effect on conformations and this conformational change does not impact the predictive ability of the 3D QSAR models.
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Thamban Chandrika N, Dennis EK, Shrestha SK, Ngo HX, Green KD, Kwiatkowski S, Deaciuc AG, Dwoskin LP, Watt DS, Garneau-Tsodikova S. N,N'-diaryl-bishydrazones in a biphenyl platform: Broad spectrum antifungal agents. Eur J Med Chem 2018; 164:273-281. [PMID: 30597328 DOI: 10.1016/j.ejmech.2018.12.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/11/2018] [Accepted: 12/17/2018] [Indexed: 11/18/2022]
Abstract
N,N'-Diaryl-bishydrazones of [1,1'-biphenyl]-3,4'-dicarboxaldehyde, [1,1'-biphenyl]-4,4'-dicarboxaldehyde, and 4,4'-bisacetyl-1,1-biphenyl exhibited excellent antifungal activity against a broad spectrum of filamentous and non-filamentous fungi. These N,N'-diaryl-bishydrazones displayed no antibacterial activity in contrast to previously reported N,N'-diamidino-bishydrazones and N-amidino-N'-aryl-bishydrazones. The leading candidate, 4,4'-bis((E)-1-(2-(4-fluorophenyl)hydrazono)ethyl)-1,1'-biphenyl, displayed less hemolysis of murine red blood cells at concentrations at or below that of a control antifungal agent (voriconazole), was fungistatic in a time-kill study, and possessed no mammalian cytotoxicity and no toxicity with respect to hERG inhibition.
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Affiliation(s)
- Nishad Thamban Chandrika
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Emily K Dennis
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Sanjib K Shrestha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Huy X Ngo
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Stefan Kwiatkowski
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA; Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Agripina Gabriela Deaciuc
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Linda P Dwoskin
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - David S Watt
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA; Department of Molecular and Cellular Biochemistry, College of Medicine, University of Kentucky, Lexington, KY, 40536-0509, USA; Lucille Parker Markey Cancer Center, University of Kentucky, Lexington, KY, 40536-0093, USA.
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, 40536-0596, USA.
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Rahman A, O'Sullivan P, Rozas I. Recent developments in compounds acting in the DNA minor groove. MEDCHEMCOMM 2018; 10:26-40. [PMID: 30774852 DOI: 10.1039/c8md00425k] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 12/11/2018] [Indexed: 12/12/2022]
Abstract
The macromolecule that carries genetic information, DNA, is considered as an exceptional target for diseases depending on cellular division of malignant cells (i.e. cancer), microbes (i.e. bacteria) or parasites (i.e. protozoa). To aim for a comprehensive review to cover all aspects related to DNA targeting would be an impossible task and, hence, the objective of the present review is to present, from a medicinal chemistry point of view, recent developments of compounds targeting the minor groove of DNA. Accordingly, we discuss the medicinal chemistry aspects of heterocyclic small-molecules binding the DNA minor groove, as novel anticancer, antibacterial and antiparasitic agents.
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Affiliation(s)
- Adeyemi Rahman
- School of Chemistry , Trinity Biomedical Sciences Institute , Trinity College Dublin , 152-160-Pearse Street , Dublin 2 , Ireland .
| | - Patrick O'Sullivan
- School of Chemistry , Trinity Biomedical Sciences Institute , Trinity College Dublin , 152-160-Pearse Street , Dublin 2 , Ireland .
| | - Isabel Rozas
- School of Chemistry , Trinity Biomedical Sciences Institute , Trinity College Dublin , 152-160-Pearse Street , Dublin 2 , Ireland .
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Lazić J, Ajdačić V, Vojnovic S, Zlatović M, Pekmezovic M, Mogavero S, Opsenica I, Nikodinovic-Runic J. Bis-guanylhydrazones as efficient anti-Candida compounds through DNA interaction. Appl Microbiol Biotechnol 2018; 102:1889-1901. [PMID: 29330691 DOI: 10.1007/s00253-018-8749-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/25/2017] [Accepted: 12/27/2017] [Indexed: 10/18/2022]
Abstract
Candida spp. are leading causes of opportunistic mycoses, including life-threatening hospital-borne infections, and novel antifungals, preferably aiming targets that have not been used before, are constantly needed. Hydrazone- and guanidine-containing molecules have shown a wide range of biological activities, including recently described excellent antifungal properties. In this study, four bis-guanylhydrazone derivatives (BG1-4) were generated following a previously developed synthetic route. Anti-Candida (two C. albicans, C. glabrata, and C. parapsilosis) minimal inhibitory concentrations (MICs) of bis-guanylhydrazones were between 2 and 15.6 μg/mL. They were also effective against preformed 48-h-old C. albicans biofilms. In vitro DNA interaction, circular dichroism, and molecular docking analysis showed the great ability of these compounds to bind fungal DNA. Competition with DNA-binding stain, exposure of phosphatidylserine at the outer layer of the cytoplasmic membrane, and activation of metacaspases were shown for BG3. This pro-apoptotic effect of BG3 was only partially due to the accumulation of reactive oxygen species in C. albicans, as only twofold MIC and higher concentrations of BG3 caused depolarization of mitochondrial membrane which was accompanied by the decrease of the activity of fungal mitochondrial dehydrogenases, while the activity of oxidative stress response enzymes glutathione reductase and catalase was not significantly affected. BG3 showed synergistic activity with amphotericin B with a fractional inhibitory concentration index of 0.5. It also exerted low cytotoxicity and the ability to inhibit epithelial cell (TR146) invasion and damage by virulent C. albicans SC5314. With further developments, BG3 may further progress in the antifungal pipeline as a DNA-targeting agent.
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Affiliation(s)
- Jelena Lazić
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, Belgrade, 11158, Serbia.,Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, Belgrade, 11000, Serbia
| | - Vladimir Ajdačić
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, Belgrade, 11158, Serbia
| | - Sandra Vojnovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, Belgrade, 11000, Serbia
| | - Mario Zlatović
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, Belgrade, 11158, Serbia
| | - Marina Pekmezovic
- Department of Microbial Pathogenicity Mechanisms, Hans Knöll Institute, Jena, Germany
| | - Selene Mogavero
- Department of Microbial Pathogenicity Mechanisms, Hans Knöll Institute, Jena, Germany
| | - Igor Opsenica
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, Belgrade, 11158, Serbia.
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, Belgrade, 11000, Serbia.
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