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Mcgee LMC, Carpinteyro Sanchez AG, Perieteanu M, Eskandari K, Bian Y, Mackie L, Young L, Beveridge R, Suckling CJ, Roberts CW, Scott FJ. Strathclyde minor groove binders (S-MGBs) with activity against Acanthamoeba castellanii. J Antimicrob Chemother 2024:dkae221. [PMID: 38980760 DOI: 10.1093/jac/dkae221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 06/15/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Acanthamoeba spp. is the causative agent of Acanthamoeba keratitis and granulomatous amoebic encephalitis. Strathclyde minor groove binders (S-MGBs) are a promising new class of anti-infective agent that have been shown to be effective against many infectious organisms. OBJECTIVES To synthesize and evaluate the anti-Acanthamoeba activity of a panel of S-MGBs, and therefore determine the potential of this class for further development. METHODS A panel of 12 S-MGBs was synthesized and anti-Acanthamoeba activity was determined using an alamarBlue™-based trophocidal assay against Acanthamoeba castellanii. Cross-screening against Trypanosoma brucei brucei, Staphylococcus aureus and Escherichia coli was used to investigate selective potency. Cytotoxicity against HEK293 cells allowed for selective toxicity to be measured. DNA binding studies were carried out using native mass spectrometry and DNA thermal shift assays. RESULTS AND DISCUSSION S-MGB-241 has an IC50 of 6.6 µM against A. castellanii, comparable to the clinically used miltefosine (5.6 µM) and negligible activity against the other organisms. It was also found to have an IC50 > 100 µM against HEK293 cells, demonstrating low cytotoxicity. S-MGB-241 binds to DNA as a dimer, albeit weakly compared to other S-MGBs previously studied. This was confirmed by DNA thermal shift assay with a ΔTm = 1 ± 0.1°C. CONCLUSIONS Together, these data provide confidence that S-MGBs can be further optimized to generate new, potent treatments for Acanthameoba spp. infections. In particular, S-MGB-241, has been identified as a 'hit' compound that is selectively active against A. castellanii, providing a starting point from which to begin optimization of DNA binding and potency.
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Affiliation(s)
- Leah M C Mcgee
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | | | - Marina Perieteanu
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Kaveh Eskandari
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Yan Bian
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Logan Mackie
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Louise Young
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Rebecca Beveridge
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Colin J Suckling
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Craig W Roberts
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Fraser J Scott
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
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2
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Ruggieri F, Compagne N, Antraygues K, Eveque M, Flipo M, Willand N. Antibiotics with novel mode of action as new weapons to fight antimicrobial resistance. Eur J Med Chem 2023; 256:115413. [PMID: 37150058 DOI: 10.1016/j.ejmech.2023.115413] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/09/2023] [Accepted: 04/22/2023] [Indexed: 05/09/2023]
Abstract
Antimicrobial resistance (AMR) is a major public health issue, causing 5 million deaths per year. Without any action plan, AMR will be in a near future the leading cause of death ahead of cancer. AMR comes from the ability of bacteria to rapidly develop and share resistance mechanisms towards current antibiotics, rendering them less effective. To circumvent this issue and avoid the phenomenon of cross-resistance, new antibiotics acting on novel targets or with new modes of action are required. Today, the pipeline of potential new treatments with these characteristics includes promising compounds such as gepotidacin, zoliflodacin, ibezapolstat, MGB-BP-3, CRS-3123, afabicin and TXA-709, which are currently in clinical trials, and lefamulin, which has been recently approved by FDA and EMA. In this review, we report the chemical synthesis, mode of action, structure-activity relationships, in vitro and in vivo activities as well as clinical data of these eight small molecules listed above.
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Affiliation(s)
- Francesca Ruggieri
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Nina Compagne
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Kevin Antraygues
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Maxime Eveque
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Marion Flipo
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Nicolas Willand
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France.
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Selective Anti-Leishmanial Strathclyde Minor Groove Binders Using an N-Oxide Tail-Group Modification. Int J Mol Sci 2022; 23:ijms231911912. [PMID: 36233213 PMCID: PMC9569768 DOI: 10.3390/ijms231911912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/29/2022] [Accepted: 10/04/2022] [Indexed: 12/05/2022] Open
Abstract
The neglected tropical disease leishmaniasis, caused by Leishmania spp., is becoming more problematic due to the emergence of drug-resistant strains. Therefore, new drugs to treat leishmaniasis, with novel mechanisms of action, are urgently required. Strathclyde minor groove binders (S-MGBs) are an emerging class of anti-infective agent that have been shown to have potent activity against various bacteria, viruses, fungi and parasites. Herein, it is shown that S-MGBs have potent activity against L. donovani, and that an N-oxide derivation of the tertiary amine tail of typical S-MGBs leads to selective anti-leishmanial activity. Additionally, using S-MGB-219, the N-oxide derivation is shown to retain strong binding to DNA as a 2:1 dimer. These findings support the further study of anti-leishmanial S-MGBs as novel therapeutics.
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4
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Bhurta D, Bharate SB. Styryl Group, a Friend or Foe in Medicinal Chemistry. ChemMedChem 2022; 17:e202100706. [PMID: 35166041 DOI: 10.1002/cmdc.202100706] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/12/2022] [Indexed: 11/10/2022]
Abstract
The styryl (Ph-CH=CH-R) group is widely represented in medicinally important compounds, including drugs, clinical candidates, and molecular probes as it positively impacts the lipophilicity, oral absorption, and biological activity. The analysis of matched molecular pairs (styryl vs. phenethyl, phenyl, methyl, H) for the biological activity indicates the superiority aspect of styryl compounds. However, the Michael acceptor site in the styryl group makes it amenable to the nucleophilic attack by biological nucleophiles and transformation to the toxic metabolites. One of the downsides of styryl compounds is isomerization that impacts the molecular conformation and directly affects biological activity. The impact of cis-trans isomerism and isosteric replacements on biological activity is exemplified. We also discuss the styryl group-bearing drugs, clinical candidates, and fluorescent probes. Overall, the present review reveals the utility of the styryl group in medicinal chemistry and drug discovery.
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Affiliation(s)
- Deendyal Bhurta
- Council of Scientific & Industrial Research Indian Institute of Integrative Medicine, Natural Products and medicinal chemistry, 180001, Jammu, INDIA
| | - Sandip Bibishan Bharate
- Indian Institute of Integrative Medicine CSIR, Natural Products & Medicinal Chemistry, Canal Road, 180001, Jammu, INDIA
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5
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Brooke DP, McGee LMC, Giordani F, Cross JM, Khalaf AI, Irving C, Gillingwater K, Shaw CD, Carter KC, Barrett MP, Suckling CJ, Scott FJ. Truncated S-MGBs: towards a parasite-specific and low aggregation chemotype. RSC Med Chem 2021; 12:1391-1401. [PMID: 34447938 PMCID: PMC8372214 DOI: 10.1039/d1md00110h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/16/2021] [Indexed: 11/21/2022] Open
Abstract
This paper describes the design and synthesis of Strathclyde minor groove binders (S-MGBs) that have been truncated by the removal of a pyrrole ring in order to mimic the structure of the natural product, disgocidine. S-MGBs have been found to be active against many different organisms, however, selective antiparasitic activity is required. A panel of seven truncated S-MGBs was prepared and the activities examined against a number of clinically relevant organisms including several bacteria and parasites. The effect of the truncation strategy on S-MGB aggregation in aqueous environment was also investigated using 1H inspection and DOSY experiments. A lead compound, a truncated S-MGB, which possesses significant activity only against trypanosomes and Leishmania has been identified for further study and was also found to be less affected by aggregation compared to its full-length analogue.
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Affiliation(s)
- Daniel P Brooke
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Leah M C McGee
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Federica Giordani
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation and Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow Glasgow UK
| | - Jasmine M Cross
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Abedawn I Khalaf
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Craig Irving
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Kirsten Gillingwater
- Parasite Chemotherapy Unit, Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute Basel Switzerland
- University of Basel Basel Switzerland
| | - Craig D Shaw
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde Glasgow UK
| | - Katharine C Carter
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde Glasgow UK
| | - Michael P Barrett
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation and Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow Glasgow UK
| | - Colin J Suckling
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Fraser J Scott
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
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Kim YJ, Kwon HJ, Han SY, Gong YD. Synthesis of 2-Amino-5-Carboxamide Thiazole Derivatives via Dehydrative Cyclization of Thiourea Intermediate Resin on Solid Phase. ACS COMBINATORIAL SCIENCE 2019; 21:380-388. [PMID: 30848875 DOI: 10.1021/acscombsci.9b00001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this study, we synthesized 2-amino-5-carboxamide thiazole derivatives on solid phase. The synthesis of the library starts with the reductive amination of the 4-formyl-3-methoxy phenoxy resin to prevent isomer formation. The dehydrative cyclization of thiourea intermediate resin, which is the key step in the synthetic process, was successfully synthesized using α-bromoketone in the presence of the DMF so as to afford 2-amino-5-carboxylate thiazole resin. The resulting resin is coupled with various amines. Finally, the 2-amino-5-carboxamide thiazole resin was cleaved from the polymer support using a TFA and DCM cocktail. The physicochemical properties of the proposed 2-amino-5-carboxamide thiazole derivatives were calculated and showed potential to be an reasonable oral bioavailability drug properties as determined by Lipinski's Rule.
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Affiliation(s)
- Ye-Ji Kim
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Korea
| | - Hye-Jin Kwon
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Korea
| | - Si-Yeon Han
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Korea
| | - Young-Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Korea
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Bhaduri S, Ranjan N, Arya DP. An overview of recent advances in duplex DNA recognition by small molecules. Beilstein J Org Chem 2018; 14:1051-1086. [PMID: 29977379 PMCID: PMC6009268 DOI: 10.3762/bjoc.14.93] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 04/06/2018] [Indexed: 12/13/2022] Open
Abstract
As the carrier of genetic information, the DNA double helix interacts with many natural ligands during the cell cycle, and is amenable to such intervention in diseases such as cancer biogenesis. Proteins bind DNA in a site-specific manner, not only distinguishing between the geometry of the major and minor grooves, but also by making close contacts with individual bases within the local helix architecture. Over the last four decades, much research has been reported on the development of small non-natural ligands as therapeutics to either block, or in some cases, mimic a DNA–protein interaction of interest. This review presents the latest findings in the pursuit of novel synthetic DNA binders. This article provides recent coverage of major strategies (such as groove recognition, intercalation and cross-linking) adopted in the duplex DNA recognition by small molecules, with an emphasis on major works of the past few years.
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Affiliation(s)
| | - Nihar Ranjan
- National Institute of Pharmaceutical Education and Research (NIPER), Raebareli 122003, India
| | - Dev P Arya
- NUBAD, LLC, 900B West Faris Rd., Greenville 29605, SC, USA.,Clemson University, Hunter Laboratory, Clemson 29634, SC, USA
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8
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Cai N, Liu C, Feng Z, Li X, Qi Z, Ji M, Qin P, Ahmed W, Cui Z. Design, Synthesis, and SAR of Novel 2-Glycinamide Cyclohexyl Sulfonamide Derivatives against Botrytis cinerea. Molecules 2018; 23:molecules23040740. [PMID: 29570637 PMCID: PMC6017058 DOI: 10.3390/molecules23040740] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/14/2018] [Accepted: 03/19/2018] [Indexed: 02/01/2023] Open
Abstract
N-(2-trifluoromethyl-4-chlorophenyl)-2-oxocyclohexyl sulfonamide (chesulfamide) is in the limelight as a novel fungicide, and has fungicidal activity against Botrytis cinerea. For exploring more novel structures, 33 new compounds were synthesized by N-alkylation and acid–amine coupling reactions with chesulfamide as the core moiety, and their structures were characterized and established by 1H-NMR, 13C-NMR, MS, and elemental analysis. The structure of (1R,2S)-2-(2-(N-(4-chloro-2-trifluoromethylphenyl)sulfamoyl)-cyclohexylamino)-N-(2-trifluoromethylphenyl) acetamide (II-19) was defined by X-ray single crystal diffraction. The in vivo and in vitro fungicidal activities against B. cinerea were evaluated. The bioassay results of mycelial growth demonstrated that most compounds exhibited excellent inhibitory activity against B. cinerea at 50 μg mL−1, and 7 compounds showed lower EC50 values than boscalid (EC50 = 4.46 μg mL−1) against B. cinerea (CY-09). In cucumber pot experiment, the inhibitory rates of four compounds (II-4, II-5, II-12, and II-13) against B. cinerea were 90.48, 93.45, 92.86, and 91.07, which were better than cyprodinil (88.69%), the best performing of all controls. In tomato pot experiment, the control efficacy of two analogs (II-8 and II-15) were 87.98 and 87.97% at 200 μg mL−1, which were significantly higher than boscalid (78.10%). Most compounds have an excellent fungicidal effect on B. cinerea, with potential as a lead compound for developing new pesticides.
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Affiliation(s)
- Nan Cai
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Caixiu Liu
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Zhihui Feng
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Xinghai Li
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Zhiqiu Qi
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Mingshan Ji
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Peiwen Qin
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, Liaoning, China.
| | - Wasim Ahmed
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, Guangdong, China.
| | - Zining Cui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, Guangdong, China.
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Hlaka L, Rosslee MJ, Ozturk M, Kumar S, Parihar SP, Brombacher F, Khalaf AI, Carter KC, Scott FJ, Suckling CJ, Guler R. Evaluation of minor groove binders (MGBs) as novel anti-mycobacterial agents and the effect of using non-ionic surfactant vesicles as a delivery system to improve their efficacy. J Antimicrob Chemother 2017; 72:3334-3341. [PMID: 28961913 PMCID: PMC5890746 DOI: 10.1093/jac/dkx326] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/31/2017] [Accepted: 08/05/2017] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES The slow development of major advances in drug discovery for the treatment of Mycobacterium tuberculosis (Mtb) infection suggests a compelling need for evaluation of more effective drug therapies against TB. New classes of drugs are constantly being evaluated for anti-mycobacterial activity with currently a very limited number of new drugs approved for TB treatment. Minor groove binders (MGBs) have previously revealed promising antimicrobial activity against various infectious agents; however, they have not yet been screened against Mtb. METHODS The mycobactericidal activity of 96 MGB compounds against Mtb was determined using an H37Rv-GFP microplate assay. MGB hits were screened for their intracellular mycobactericidal efficacy against the clinical Beijing Mtb strain HN878 in bone-marrow-derived macrophages using standard cfu counting. Cell viability was assessed by CellTiter-Blue assays. Selected MGBs were encapsulated into non-ionic surfactant vesicles (NIVs) for drug delivery system evaluation. RESULTS H37Rv-GFP screening yielded a hit-list of seven compounds at an MIC99 of between 0.39 and 1.56 μM. MGB-362 and MGB-364 displayed intracellular mycobactericidal activity against Mtb HN878 at an MIC50 of 4.09 and 4.19 μM, respectively, whilst being non-toxic. Subsequent encapsulation into NIVs demonstrated a 1.6- and 2.1-fold increased intracellular mycobacterial activity, similar to that of rifampicin when compared with MGB-alone formulation. CONCLUSIONS MGB anti-mycobacterial activities together with non-toxic properties indicate that MGB compounds constitute an important new class of drug/chemical entity, which holds promise in future anti-TB therapy. Furthermore, the ability of NIVs to better deliver entrapped MGB compounds to an intracellular Mtb infection suggests further preclinical evaluation is warranted.
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Affiliation(s)
- Lerato Hlaka
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Michael-Jon Rosslee
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Mumin Ozturk
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Santosh Kumar
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Suraj P Parihar
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Frank Brombacher
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
| | - Abedawn I Khalaf
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Katharine C Carter
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 ORE, UK
| | - Fraser J Scott
- Department of Biological Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - Colin J Suckling
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Reto Guler
- University of Cape Town, Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Cape Town 7925, South Africa
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Mane YD, Surwase SM, Biradar DO, Sarnikar YP, Jawle BH, Shinde VS, Khade BC. Design and Synthesis of Diverse Pyrrole-2-carboxamide Derivatives as a Potent Antibacterial Agents. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yogesh D. Mane
- Shri Chhatrapati Shivaji College; Omerga Dist-Osmanabad, M.S. India
| | | | | | | | - Balaji H. Jawle
- Arts, Science and Commerce College; Makni Dist-Osmanabad, M.S. India
| | - Vishnu S. Shinde
- Shri Chhatrapati Shivaji College; Omerga Dist-Osmanabad, M.S. India
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Scott FJ, Puig-Sellart M, Khalaf AI, Henderson CJ, Westrop G, Watson DG, Carter K, Grant MH, Suckling CJ. An evaluation of Minor Groove Binders as anti-lung cancer therapeutics. Bioorg Med Chem Lett 2016; 26:3478-86. [DOI: 10.1016/j.bmcl.2016.06.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 06/14/2016] [Accepted: 06/15/2016] [Indexed: 11/30/2022]
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Synthesis, antitumor activity and mechanism of action of novel 1,3-thiazole derivatives containing hydrazide–hydrazone and carboxamide moiety. Bioorg Med Chem Lett 2016; 26:3263-3270. [DOI: 10.1016/j.bmcl.2016.05.059] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 05/09/2016] [Accepted: 05/21/2016] [Indexed: 11/30/2022]
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Abstract
Nitric oxide is an efficient catalyst for the cis-trans (E/Z) isomerization of diazenes. We compare the effect of room temperature solutions bearing low concentrations of nitric oxide, nitrogen dioxide, or oxygen on the rate of cis-trans isomerization, CTI, of the alkene bond in stilbene and on the azo double bond in azobenzene, as well as in four azo derivatives as measured by UV-vis spectroscopy. These rate enhancements can be as large as 3 orders of magnitude for azobenzene in solution. A mechanism is proposed where catalysis is promoted by the interaction of the nitric oxide with the diazene nitrogen lone pairs. Density functional theory, B3LYP/6-311++g** suggests that the binding of NO to the diazene should be weak and reversible but that its NO adduct has an E/Z isomerization barrier of 7.5 kcal/mol.
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Affiliation(s)
- D Scott Bohle
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal H3A 0B8, Canada
| | - Kristopher A Rosadiuk
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal H3A 0B8, Canada
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Brucoli F, Guzman JD, Maitra A, James CH, Fox KR, Bhakta S. Synthesis, anti-mycobacterial activity and DNA sequence-selectivity of a library of biaryl-motifs containing polyamides. Bioorg Med Chem 2015; 23:3705-11. [PMID: 25921267 DOI: 10.1016/j.bmc.2015.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/27/2015] [Accepted: 04/02/2015] [Indexed: 02/07/2023]
Abstract
The alarming rise of extensively drug-resistant tuberculosis (XDR-TB) strains, compel the development of new molecules with novel modes of action to control this world health emergency. Distamycin analogues containing N-terminal biaryl-motifs 2(1-5)(1-7) were synthesised using a solution-phase approach and evaluated for their anti-mycobacterial activity and DNA-sequence selectivity. Thiophene dimer motif-containing polyamide 2(2,6) exhibited 10-fold higher inhibitory activity against Mycobacterium tuberculosis compared to distamycin and library member 2(5,7) showed high binding affinity for the 5'-ACATAT-3' sequence.
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Affiliation(s)
- Federico Brucoli
- School of Science and Sport, Institute of Biomedical and Environmental Health Research (IBEHR), University of the West of Scotland, Paisley PA1 2BE, UK.
| | - Juan D Guzman
- Mycobacteria Research Laboratory, Department of Biological Sciences, The Institute of Structural and Molecular Biology, Birkbeck, University of London, London WC1E 7HX, UK
| | - Arundhati Maitra
- Mycobacteria Research Laboratory, Department of Biological Sciences, The Institute of Structural and Molecular Biology, Birkbeck, University of London, London WC1E 7HX, UK
| | - Colin H James
- UCL School of Pharmacy, London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Keith R Fox
- Centre for Biological Sciences, Life Sciences Building 85, University of Southampton, Southampton SO17 1BJ, UK
| | - Sanjib Bhakta
- Mycobacteria Research Laboratory, Department of Biological Sciences, The Institute of Structural and Molecular Biology, Birkbeck, University of London, London WC1E 7HX, UK
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15
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Garrido M, González-Arenas A, Camacho-Arroyo I, Cabeza M, Alcaraz B, Bratoeff E. Effect of new hybrids based on 5,16-pregnadiene scaffold linked to an anti-inflammatory drug on the growth of a human astrocytoma cell line (U373). Eur J Med Chem 2015; 93:135-41. [DOI: 10.1016/j.ejmech.2015.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 01/22/2015] [Accepted: 01/23/2015] [Indexed: 11/25/2022]
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16
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Bahamonde MI, Taura J, Paoletta S, Gakh AA, Chakraborty S, Hernando J, Fernández-Dueñas V, Jacobson KA, Gorostiza P, Ciruela F. Photomodulation of G protein-coupled adenosine receptors by a novel light-switchable ligand. Bioconjug Chem 2014; 25:1847-54. [PMID: 25248077 PMCID: PMC4198106 DOI: 10.1021/bc5003373] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
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The adenosinergic system operates
through G protein-coupled adenosine
receptors, which have become promising therapeutic targets for a wide
range of pathological conditions. However, the ubiquity of adenosine
receptors and the eventual lack of selectivity of adenosine-based
drugs have frequently diminished their therapeutic potential. Accordingly,
here we aimed to develop a new generation of light-switchable adenosine
receptor ligands that change their intrinsic activity upon irradiation,
thus allowing the spatiotemporal control of receptor functioning (i.e.,
receptor activation/inactivation dependent on location and timing).
Therefore, we synthesized an orthosteric, photoisomerizable, and nonselective
adenosine receptor agonist, nucleoside derivative MRS5543 containing
an aryl diazo linkage on the N6 substituent, which in the
dark (relaxed isomer) behaved as a full adenosine A3 receptor
(A3R) and partial adenosine A2A receptor (A2AR) agonist. Conversely, upon photoisomerization with blue
light (460 nm), it remained a full A3R agonist but became
an A2AR antagonist. Interestingly, molecular modeling suggested
that structural differences encountered within the third extracellular
loop of each receptor could modulate the intrinsic, receptor subtype-dependent,
activity. Overall, the development of adenosine receptor ligands with
photoswitchable activity expands the pharmacological toolbox in support
of research and possibly opens new pharmacotherapeutic opportunities.
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17
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Bolhuis A, Aldrich-Wright JR. DNA as a target for antimicrobials. Bioorg Chem 2014; 55:51-9. [DOI: 10.1016/j.bioorg.2014.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 03/22/2014] [Accepted: 03/24/2014] [Indexed: 11/28/2022]
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18
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Rostom SA, Faidallah HM, Radwan MF, Badr MH. Bifunctional ethyl 2-amino-4-methylthiazole-5-carboxylate derivatives: Synthesis and in vitro biological evaluation as antimicrobial and anticancer agents. Eur J Med Chem 2014; 76:170-81. [DOI: 10.1016/j.ejmech.2014.02.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 01/15/2014] [Accepted: 02/08/2014] [Indexed: 12/11/2022]
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19
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Rettig M, Germann MW, Ismail MA, Batista-Parra A, Munde M, Boykin DW, Wilson WD. Microscopic rearrangement of bound minor groove binders detected by NMR. J Phys Chem B 2012; 116:5620-7. [PMID: 22530735 DOI: 10.1021/jp301143e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Thermodynamic and structural studies are commonly utilized to optimize small molecules for specific DNA interactions, and, thus, a significant amount of binding data is available. However, the dynamic processes that are involved in minor groove complex formation and maintenance are not fully understood. To help define the processes involved, we have conducted 1D and 2D NMR in conjunction with biosensor-SPR experiments with a variety of compounds and symmetric, as well as asymmetric, AT tract DNA sequences. Surprisingly, the NMR data clearly show exchange between equivalent binding sites for strongly binding compounds like netropsin and DB921 (Ka > 10(8) M(-1)) that does not involve dissociation off the DNA. A quantitative analysis of the data revealed that these bound exchange rates are indeed much faster than the macroscopic dissociation rates which were independently determined by biosensor-SPR. Additionally, we could show the existence of at least two 1:1 compound DNA complexes at the same site for the interaction of these compounds with an asymmetric DNA sequence. To explain this behavior we introduced a model in which the ligand is rapidly flipping between two orientations while in close association with the DNA. The ligand reorientation will contribute favorably to the binding entropy. As the potential of minor groove binders to form more than a single complex with asymmetric, as well as symmetric, duplexes is widely unknown, the consequences for binding thermodynamics and compound design are discussed.
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Affiliation(s)
- Michael Rettig
- Department of Chemistry, Georgia State University , Atlanta, Georgia 30303, United States
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20
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From multiply active natural product to candidate drug? Antibacterial (and other) minor groove binders for DNA. Future Med Chem 2012; 4:971-89. [DOI: 10.4155/fmc.12.52] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Natural products that bind to DNA in the minor groove are valuable templates for drug design. Examples include distamycin, netropsin, duocarmycin and anthramycin. Anticancer and anti-infective drugs feature strongly amongst their derivatives. The structures and activities of chemotypes with various therapeutic actions are discussed in the context of the broader field of therapeutically active minor groove binders. The evolution of a series of exceptionally potent and nontoxic antibacterial compounds is discussed using the general design principle of introducing additional hydrophobicity into the distamycin template to increase the strength of binding to DNA. As well as potent antibacterial compounds, antifungal and antiparasitic compounds with exceptional cellular activity against trypanosomes have been identified. Possible mechanisms of action including gene regulation and topoisomerase inhibition are discussed with the need in mind to understand selective toxicity in the series to support future drug discovery.
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21
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Nagle PS, Rodriguez F, Nguyen B, Wilson WD, Rozas I. High DNA affinity of a series of peptide linked diaromatic guanidinium-like derivatives. J Med Chem 2012; 55:4397-406. [PMID: 22497334 DOI: 10.1021/jm300296f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this paper we report the design and synthesis of a new family of asymmetric peptide linked diaromatic dications as potent DNA minor groove binders. These peptide-linked compounds, with a linear core, displayed a much larger affinity than other guanidinium-like derivatives from the same series with curved cores. As a first screening, the DNA affinity of these structures was evaluated by means of thermal denaturation experiments, finding that the nature of the cation (guanidinium vs 2-aminoimidazolinium) significantly influenced the binding strength. Their binding affinity was assessed by implementing further biophysical measurements such as surface plasmon resonance and circular dichroism. In particular, it was observed that compounds 6, 7, and 8 displayed both a strong binding affinity and significant selectivity for AT oligonucleotides. In addition, the thermodynamics of their binding was evaluated using isothermal titration calorimetry, indicating that the binding is derived from favorable enthalpic and entropic contributions.
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Affiliation(s)
- Padraic S Nagle
- School of Chemistry, Trinity Biomedical Sciences Institute, University of Dublin, Trinity College, Pearse St., Dublin 2, Ireland
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