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Ramirez DM, Dhiman S, Mukherjee A, Wimalasekara R, Schweizer F. Application of tobramycin benzyl ether as an antibiotic adjuvant capable of sensitizing multidrug-resistant Gram-negative bacteria to rifampicin. RSC Med Chem 2024; 15:1055-1065. [PMID: 38516601 PMCID: PMC10953491 DOI: 10.1039/d3md00602f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/13/2024] [Indexed: 03/23/2024] Open
Abstract
The emergence of aminoglycoside resistance has prompted the development of amphiphilic aminoglycoside derivatives which target bacterial membranes. Tobramycin and nebramine ether derivatives initially designed for this purpose were optimized and screened for their potential application as outer membrane (OM) permeabilizing adjuvants. Structure-activity relationship (SAR) studies revealed that the tobramycin benzyl ether was the most optimal OM permeabilizer, capable of potentiating rifampicin, novobiocin, vancomycin, minocycline, and doxycycline against Gram-negative bacteria. The innovative use of this compound as an adjuvant is highlighted by its ability to sensitize multidrug-resistant (MDR) Gram-negative bacteria to rifampicin and restore the susceptibility of MDR Escherichia coli to minocycline.
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Affiliation(s)
| | - Shiv Dhiman
- Department of Chemistry, University of Manitoba Winnipeg MB R3T 2N2 Canada
| | - Ayan Mukherjee
- Department of Chemistry, University of Manitoba Winnipeg MB R3T 2N2 Canada
| | - Ruwani Wimalasekara
- Department of Microbiology, University of Manitoba Winnipeg MB R3T 2N2 Canada
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba Winnipeg MB R3T 2N2 Canada
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2
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Mukherjee A, Ramirez D, Arora R, Arthur G, Schweizer F. Amphiphilic tribasic galactosamines potentiate rifampicin in Gram-negative bacteria at low Mg ++/Ca ++concentrations. Bioorg Med Chem Lett 2024; 97:129371. [PMID: 37301521 DOI: 10.1016/j.bmcl.2023.129371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/30/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Many antibiotics specific to Gram-positive bacteria like rifampicin (RIF) are inactive in Gram-negative bacteria because of outer membrane (OM) impermeability. Enhancing the OM permeability of these antibiotics with the help of OM perturbants is a promising strategy to develop new agents against Gram-negative bacteria. Here we report the synthesis and biological properties of amphiphilic tribasic galactosamines as potential RIF potentiators. Our results demonstrate that tribasic galactose-based amphiphiles potentiate RIF in multidrug-resistant Acinetobacter baumannii and Escherichia coli but not Pseudomonas aeruginosa in low salt-containing media. Under these conditions, lead compounds 20, 22 and 35 lowered the minimum inhibitory concentration of RIF by 64- to 256-fold against Gram-negative bacteria. However, the RIF-potentiating effect was reduced when bivalent Mg++ or Ca++ ions were added in the media at physiological concentrations. Overall, our results indicate that amphiphilic tribasic galactosamine-based compounds show reduced RIF-potentiating effects when compared to amphiphilic tobramycin antibiotics at physiological salt concentrations.
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Affiliation(s)
- Ayan Mukherjee
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Danyel Ramirez
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Rajat Arora
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Gilbert Arthur
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB R3E 0J9, Canada.
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9 Canada.
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3
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Jiang M, Li X, Xie CL, Chen P, Luo W, Lin CX, Wang Q, Shu DM, Luo CL, Qu H, Ji J. Fructose-enabled killing of antibiotic-resistant Salmonella enteritidis by gentamicin: Insight from reprogramming metabolomics. Int J Antimicrob Agents 2023; 62:106907. [PMID: 37385564 DOI: 10.1016/j.ijantimicag.2023.106907] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/29/2023] [Accepted: 06/25/2023] [Indexed: 07/01/2023]
Abstract
Salmonella enterica is a food-borne pathogen that poses a severe threat to both poultry production and human health. Antibiotics are critical for the initial treatment of bacterial infections. However, the overuse and misuse of antibiotics results in the rapid evolution of antibiotic-resistant bacteria, and the discovery and development of new antibiotics are declining. Therefore, understanding antibiotic resistance mechanisms and developing novel control measures are essential. In the present study, GC-MS-based metabolomics analysis was performed to determine the metabolic profile of gentamicin sensitive (SE-S) and resistant (SE-R) S. enterica. Fructose was identified as a crucial biomarker. Further analysis demonstrated a global depressed central carbon metabolism and energy metabolism in SE-R. The decrease in the pyruvate cycle reduces the production of NADH and ATP, causing a decrease in membrane potential, which contributes to gentamicin resistance. Exogenous fructose potentiated the effectiveness of gentamicin in killing SE-R by promoting the pyruvate cycle, NADH, ATP and membrane potential, thereby increasing gentamicin intake. Further, fructose plus gentamicin improved the survival rate of chicken infected with gentamicin-resistant Salmonella in vivo. Given that metabolite structures are conserved across species, fructose identified from bacteria could be used as a biomarker for breeding disease-resistant phenotypes in chicken. Therefore, a novel strategy is proposed for fighting against antibiotic-resistant S. enterica, including exploring molecules suppressed by antibiotics and providing a new approach to find pathogen targets for disease resistance in chicken breeding.
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Affiliation(s)
- Ming Jiang
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China; The Third Affiliated Hospital, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xia Li
- The Third Affiliated Hospital, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chun-Lin Xie
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Peng Chen
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Wei Luo
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Chu-Xiao Lin
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Qiao Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ding-Ming Shu
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Cheng-Long Luo
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Hao Qu
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China.
| | - Jian Ji
- State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China.
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4
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Ulagesan S, Krishnan S, Nam TJ, Choi YH. The Influence of κ-Carrageenan-R-Phycoerythrin Hydrogel on In Vitro Wound Healing and Biological Function. Int J Mol Sci 2023; 24:12358. [PMID: 37569731 PMCID: PMC10419105 DOI: 10.3390/ijms241512358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/29/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Wound healing is widely recognized as a critical issue impacting the healthcare sector in numerous countries. The application of wound dressings multiple times in such instances can result in tissue damage, thereby increasing the complexity of wound healing. With the aim of tackling this necessity, in the present study, we have formulated a hydrogel using natural polysaccharide κ-carrageenan and phycobiliprotein R-phycoerythrin from Pyropia yezoensis. The formulated hydrogel κ-Carrageenan-R-Phycoerythrin (κ-CRG-R-PE) was analyzed for its antioxidant and antimicrobial activity. The wound healing potential of the κ-CRG-R-PE was evaluated in Hs27 cells by the wound scratch assay method. The hydrogel showed dose-dependent antioxidant activity and significant antimicrobial activity at 100 μg/mL concentration. κ-CRG-R-PE hydrogels promoted more rapid and complete wound closure than κ-Carrageenan (κ-CRG) hydrogel at 24 and 48 h. κ-CRG-R-PE hydrogels also filled the wound within 48 h of incubation, indicating that they positively affect fibroblast migration and wound healing.
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Affiliation(s)
- Selvakumari Ulagesan
- Division of Fisheries Life Sciences, Pukyong National University, Nam-gu, Busan 48513, Republic of Korea;
| | - Sathish Krishnan
- Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan 46041, Republic of Korea; (S.K.); (T.-J.N.)
| | - Taek-Jeong Nam
- Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan 46041, Republic of Korea; (S.K.); (T.-J.N.)
| | - Youn-Hee Choi
- Division of Fisheries Life Sciences, Pukyong National University, Nam-gu, Busan 48513, Republic of Korea;
- Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan 46041, Republic of Korea; (S.K.); (T.-J.N.)
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5
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Macyszyn J, Burmistrz M, Mieczkowski A, Wojciechowska M, Trylska J. Conjugates of Aminoglycosides with Stapled Peptides as a Way to Target Antibiotic-Resistant Bacteria. ACS OMEGA 2023; 8:19047-19056. [PMID: 37273645 PMCID: PMC10233823 DOI: 10.1021/acsomega.3c02071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/03/2023] [Indexed: 06/06/2023]
Abstract
The misuse and overuse of antibiotics led to the development of bacterial resistance to existing aminoglycoside (AMG) antibiotics and limited their use. Consequently, there is a growing need to develop effective antimicrobials against multidrug-resistant bacteria. To target resistant strains, we propose to combine 2-deoxystreptamine AMGs, neomycin (NEO) and amikacin (AMK), with a membrane-active antimicrobial peptide anoplin and its hydrocarbon stapled derivative. The AMG-peptide hybrids were conjugated using the click chemistry reaction in solution to obtain a non-cleavable triazole linker and by disulfide bridge formation on the resin to obtain a linker cleavable in the bacterial cytoplasm. Homo-dimers connected via disulfide bridges between the N-terminus thiol analogues of anoplin and hydrocarbon stapled anoplin were also synthesized. These hybrid compounds show a notable increase in antibacterial and bactericidal activity, as compared to the unconjugated ones or their combinations, against Gram-positive and Gram-negative bacteria, especially for the strains resistant to AMK or NEO. The conjugates and disulfide peptide dimers exhibit low hemolytic activity on sheep red blood erythrocytes.
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Affiliation(s)
- Julia Macyszyn
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Michał Burmistrz
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Adam Mieczkowski
- Institute
of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Monika Wojciechowska
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Joanna Trylska
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
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6
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Takemoto JY, Altenberg GA, Poudyal N, Subedi YP, Chang CWT. Amphiphilic aminoglycosides: Modifications that revive old natural product antibiotics. Front Microbiol 2022; 13:1000199. [PMID: 36212866 PMCID: PMC9537547 DOI: 10.3389/fmicb.2022.1000199] [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: 07/21/2022] [Accepted: 08/30/2022] [Indexed: 12/02/2022] Open
Abstract
Widely-used Streptomyces-derived antibacterial aminoglycosides have encountered challenges because of antibiotic resistance and toxicity. Today, they are largely relegated to medicinal topical applications. However, chemical modification to amphiphilic aminoglycosides can revive their efficacy against bacterial pathogens and expand their targets to other pathogenic microbes and disorders associated with hyperactive connexin hemichannels. For example, amphiphilic versions of neomycin and neamine are not subject to resistance and have expanded antibacterial spectra, and amphiphilic kanamycins are effective antifungals and have promising therapeutic uses as connexin hemichannel inhibitors. With further research and discoveries aimed at improved formulations and delivery, amphiphilic aminoglycosides may achieve new horizons in pharmacopeia and agriculture for Streptomyces aminoglycosides beyond just serving as topical antibacterials.
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Affiliation(s)
- Jon Y. Takemoto
- Department of Biology, Utah State University, Logan, UT, United States
| | - Guillermo A. Altenberg
- Department of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Naveena Poudyal
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, United States
| | - Yagya P. Subedi
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, United States
| | - Cheng-Wei T. Chang
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, United States
- *Correspondence: Cheng-Wei T. Chang,
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7
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Wang Y, Wu P, Liu F, Chen J, Xue J, Qin Y, Chen F, Wang S, Ji L. Design, synthesis, and biological evaluation of membrane-active honokiol derivatives as potent antibacterial agents. Eur J Med Chem 2022; 240:114593. [PMID: 35820350 DOI: 10.1016/j.ejmech.2022.114593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 11/19/2022]
Abstract
Infections caused by drug-resistant bacteria have emerged to be one of the greatest threats to global public health, and new antimicrobial agents with novel mechanisms of action hence are in an urgent need to combat bacterial resistance. Herein, we reported the design, synthesis, and antibacterial evaluation of novel honokiol derivatives as mimics of antimicrobial peptides (AMPs). These mimics showed potent antimicrobial properties against Gram-positive bacteria. Among them, the most promising compound 13b exhibited excellent antibacterial activity, rapid bactericidal properties, avoidance of antibiotic resistance, and weak hemolytic and cytotoxic activities. In addition, compound 13b not only inhibited the biofilm formation but also destroy the preformed biofilm. Mechanism studies further revealed that compound 13b killed bacteria rapidly by interrupting the bacterial membrane. More intriguingly, compound 13b exhibited potent in vivo antibacterial efficacy in a mouse septicemia model induced by Staphylococcus aureus ATCC43300. These results highlight the potential of 13b to be used as therapeutic agents.
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Affiliation(s)
- Yinhu Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
| | - Ping Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Fangquan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Junjie Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Jie Xue
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Yinhui Qin
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Fang Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Shuo Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
| | - Lusha Ji
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
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8
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Unlocking the bacterial membrane as a therapeutic target for next-generation antimicrobial amphiphiles. Mol Aspects Med 2021; 81:100999. [PMID: 34325929 DOI: 10.1016/j.mam.2021.100999] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 06/21/2021] [Accepted: 07/16/2021] [Indexed: 11/21/2022]
Abstract
Gram-positive bacteria like Enterococcus faecium and Staphylococcus aureus, and Gram-negative bacteria like Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter Spp. are responsible for most of fatal bacterial infections. Bacteria present a handful of targets like ribosome, RNA polymerase, cell wall biosynthesis, and dihydrofolate reductase. Antibiotics targeting the protein synthesis like aminoglycosides and tetracyclines, inhibitors of RNA/DNA synthesis like fluoroquinolones, inhibitors of cell wall biosynthesis like glycopeptides and β-lactams, and membrane-targeting polymyxins and lipopeptides have shown very good success in combating the bacterial infections. Ability of the bacteria to develop drug resistance is a serious public health challenge as bacteria can develop antimicrobial resistance against newly introduced antibiotics that enhances the challenge for antibiotic drug discovery. Therefore, bacterial membranes present a suitable therapeutic target for development of antimicrobials as bacteria can find it difficult to develop resistance against membrane-targeting antimicrobials. In this review, we present the recent advances in engineering of membrane-targeting antimicrobial amphiphiles that can be effective alternatives to existing antibiotics in combating bacterial infections.
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9
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Immobilization of amikacin on dextran: biocomposite materials that release an antibiotic in the presence of bacterial dextranase. POLYM INT 2021. [DOI: 10.1002/pi.6171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Ponti F, Campolungo M, Melchiori C, Bono N, Candiani G. Cationic lipids for gene delivery: many players, one goal. Chem Phys Lipids 2021; 235:105032. [PMID: 33359210 DOI: 10.1016/j.chemphyslip.2020.105032] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/23/2020] [Accepted: 12/19/2020] [Indexed: 12/28/2022]
Abstract
Lipid-based carriers represent the most widely used alternative to viral vectors for gene expression and gene silencing purposes. This class of non-viral vectors is particularly attractive for their ease of synthesis and chemical modifications to endow them with desirable properties. Despite combinatorial approaches have led to the generation of a large number of cationic lipids displaying different supramolecular structures and improved behavior, additional effort is needed towards the development of more and more effective cationic lipids for transfection purposes. With this review, we seek to highlight the great progress made in the design of each and every constituent domain of cationic lipids, that is, the chemical structure of the headgroup, linker and hydrophobic moieties, and on the specific effect on the assembly with nucleic acids. Since the complexity of such systems is known to affect their performances, the role of formulation, stability and phase behavior on the transfection efficiency of such assemblies will be thoroughly discussed. Our objective is to provide a conceptual framework for the development of ever more performing lipid gene delivery vectors.
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Affiliation(s)
- Federica Ponti
- GenT LΛB, Dept. of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131, Milan, Italy; Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Dept. Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, QC, Canada
| | - Matilde Campolungo
- GenT LΛB, Dept. of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Clara Melchiori
- GenT LΛB, Dept. of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Nina Bono
- GenT LΛB, Dept. of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131, Milan, Italy.
| | - Gabriele Candiani
- GenT LΛB, Dept. of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131, Milan, Italy.
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11
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Aradi K, Di Giorgio A, Duca M. Aminoglycoside Conjugation for RNA Targeting: Antimicrobials and Beyond. Chemistry 2020; 26:12273-12309. [PMID: 32539167 DOI: 10.1002/chem.202002258] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/11/2020] [Indexed: 01/04/2023]
Abstract
Natural aminoglycosides are therapeutically useful antibiotics and very efficient RNA ligands. They are oligosaccharides that contain several ammonium groups able to interfere with the translation process in prokaryotes upon binding to bacterial ribosomal RNA (rRNA), and thus, impairing protein synthesis. Even if aminoglycosides are commonly used in therapy, these RNA binders lack selectivity and are able to bind to a wide number of RNA sequences/structures. This is one of the reasons for their toxicity and limited applications in therapy. At the same time, the ability of aminoglycosides to bind to various RNAs renders them a great source of inspiration for the synthesis of new binders with improved affinity and specificity toward several therapeutically relevant RNA targets. Thus, a number of studies have been performed on these complex and highly functionalized compounds, leading to the development of various synthetic methodologies toward the synthesis of conjugated aminoglycosides. The aim of this review is to highlight recent progress in the field of aminoglycoside conjugation, paying particular attention to modifications performed toward the improvement of affinity and especially to the selectivity of the resulting compounds. This will help readers to understand how to introduce a desired chemical modification for future developments of RNA ligands as antibiotics, antiviral, and anticancer compounds.
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Affiliation(s)
- Klara Aradi
- Université Côte d'Azur, CNRS, Institute of Chemistry of Nice (ICN), 06100, Nice, France
| | - Audrey Di Giorgio
- Université Côte d'Azur, CNRS, Institute of Chemistry of Nice (ICN), 06100, Nice, France
| | - Maria Duca
- Université Côte d'Azur, CNRS, Institute of Chemistry of Nice (ICN), 06100, Nice, France
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12
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Metabolomics Study of the Synergistic Killing of Polymyxin B in Combination with Amikacin against Polymyxin-Susceptible and -Resistant Pseudomonas aeruginosa. Antimicrob Agents Chemother 2019; 64:AAC.01587-19. [PMID: 31611351 DOI: 10.1128/aac.01587-19] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/24/2019] [Indexed: 12/13/2022] Open
Abstract
In the present study, we employed untargeted metabolomics to investigate the synergistic killing mechanism of polymyxin B in combination with an aminoglycoside, amikacin, against a polymyxin-susceptible isolate of Pseudomonas aeruginosa, FADDI-PA111 (MIC = 2 mg/liter for both polymyxin B and amikacin), and a polymyxin-resistant Liverpool epidemic strain (LES), LESB58 (the corresponding MIC for both polymyxin B and amikacin is 16 mg/liter). The metabolites were extracted 15 min, 1 h, and 4 h following treatment with polymyxin B alone (2 mg/liter for FADDI-PA111; 4 mg/liter for LESB58), amikacin alone (2 mg/liter), and both in combination and analyzed using liquid chromatography-mass spectrometry (LC-MS). At 15 min and 1 h, polymyxin B alone induced significant perturbations in glycerophospholipid and fatty acid metabolism pathways in FADDI-PA111 and, to a lesser extent, in LESB58. Amikacin alone at 1 and 4 h induced significant perturbations in peptide and amino acid metabolism, which is in line with the mode of action of aminoglycosides. Pathway analysis of FADDI-PA111 revealed that the synergistic effect of the combination was largely due to the inhibition of cell envelope biogenesis, which was driven initially by polymyxin B via suppression of key metabolites involved in lipopolysaccharide, peptidoglycan, and membrane lipids (15 min and 1 h) and later by amikacin (4 h). Overall, these novel findings demonstrate that the disruption of cell envelope biogenesis and central carbohydrate metabolism, decreased levels of amino sugars, and a downregulated nucleotide pool are the metabolic pathways associated with the synergistic killing of the polymyxin-amikacin combination against P. aeruginosa This mechanistic study might help optimize synergistic polymyxin B combinations in the clinical setting.
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13
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Singh I, Priyam A, Jha D, Dhawan G, Gautam HK, Kumar P. Polydopamine -aminoglycoside nanoconjugates: Synthesis, characterization, antimicrobial evaluation and cytocompatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110284. [PMID: 31761233 DOI: 10.1016/j.msec.2019.110284] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 09/04/2019] [Accepted: 10/05/2019] [Indexed: 01/19/2023]
Abstract
Development of nanoparticle- and self-assembled nanomaterial-based therapeutics has become a rapidly growing area in the field of nanotechnology. One of the natural compounds, dopamine, presents as a neurotransmitter in the human brain serving as a messenger and deals with the behavioural responses, has provided an ideal platform through self-polymerization under aerobic conditions leading to the formation of a beneficial organic biopolymer, polydopamine (PDA). This polymer provides sufficient reactive functionalities, which can further be use to attach amine- or thiol-containing ligands to obtain conjugates. In the present study, self-polymerized polydopamine nanoparticles have been synthesized and tethered to aminoglycosides (AGs: Gentamicin, Kanamycin and Neomycin) through amino moieties to obtain PDA-AG nanoconjugates. These nanoconjugates are characterized by physicochemical techniques and evaluated for their antimicrobial potency against various bacterial strains including resistant ones. Simultaneously, cytocompatibility was also assessed for PDA-AG nanoconjugates. Of these three nanoconjugates (PDA-Gentamicin, PDA-Kanamycin and PDA-Neomycin), PDA-Kanamycin (PDA-K) nanoconjugate exhibited the highest activity against potent pathogens, least toxicity in human embryonic kidney (HEK 293) cells and intense toxic effects on human glioblastoma (U87) cells. Together, these results advocate the promising potential of these nanoconjugates to be used as potent antimicrobials in future applications.
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Affiliation(s)
- Indu Singh
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, 110025, India; Department of Biomedical Sciences, Acharya Narendra Dev College, University of Delhi, Kalkaji, New Delhi, 110019, India
| | - Ayushi Priyam
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Diksha Jha
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, 110025, India
| | - Gagan Dhawan
- Department of Biomedical Sciences, Acharya Narendra Dev College, University of Delhi, Kalkaji, New Delhi, 110019, India.
| | - Hemant K Gautam
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, 110025, India.
| | - P Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India.
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14
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Alfindee MN, Subedi YP, Grilley MM, Takemoto JY, Chang CWT. Antifungal Activities of 4″,6″-Disubstituted Amphiphilic Kanamycins. Molecules 2019; 24:molecules24101882. [PMID: 31100822 PMCID: PMC6571828 DOI: 10.3390/molecules24101882] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/10/2019] [Accepted: 05/14/2019] [Indexed: 12/17/2022] Open
Abstract
Amphiphilic kanamycins derived from the classic antibiotic kanamycin have attracted interest due to their novel bioactivities beyond inhibition of bacteria. In this study, the recently described 4″,6″-diaryl amphiphilic kanamycins reported as inhibitors of connexin were examined for their antifungal activities. Nearly all 4″,6″-diaryl amphiphilic kanamycins tested had antifungal activities comparable to those of 4″,6″-dialkyl amphiphilic kanamycins, reported previously against several fungal strains. The minimal growth inhibitory concentrations (MICs) correlated with the degree of amphiphilicity (cLogD) of the di-substituted amphiphilic kanamycins. Using the fluorogenic dyes, SYTOXTM Green and propidium iodide, the most active compounds at the corresponding MICs or at 2×MICs caused biphasic dye fluorescence increases over time with intact cells. Further lowering the concentrations to half MICs caused first-order dye fluorescence increases. Interestingly, 4×MIC or 8×MIC levels resulted in fluorescence suppression that did not correlate with the MIC and plasma membrane permeabilization. The results show that 4″,6″-diaryl amphiphilic kanamycins are antifungal and that amphiphilicity parameter cLogD is useful for the design of the most membrane-active versions. A cautionary limitation of fluorescence suppression was revealed when using fluorogenic dyes to measure cell-permeation mechanisms with these antifungals at high concentrations. Finally, 4″,6″-diaryl amphiphilic kanamycins elevate the production of cellular reactive oxygen species as other reported amphiphilic kanamycins.
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Affiliation(s)
- Madher N Alfindee
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA.
| | - Yagya P Subedi
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA.
| | - Michelle M Grilley
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, UT 84322-5305, USA.
| | - Jon Y Takemoto
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, UT 84322-5305, USA.
| | - Cheng-Wei T Chang
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA.
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15
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Subedi YP, Roberts P, Grilley M, Takemoto JY, Chang CWT. Development of Fungal Selective Amphiphilic Kanamycin: Cost-Effective Synthesis and Use of Fluorescent Analogs for Mode of Action Investigation. ACS Infect Dis 2019; 5:473-483. [PMID: 30674192 DOI: 10.1021/acsinfecdis.8b00327] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Amphiphilic aminoglycosides have attracted interest due to their novel antifungal activities. A crucial but often neglected factor for drug development in academia is cost of production. Herein is reported a one-step, inexpensive synthesis of amphiphilic alkyl kanamycins constituted with only natural components. The synthetic methodology also enabled the preparation of a series fluorescent amphiphilic aryl kanamycins for direct structure-activity mode of action studies. The lead compounds showed prominent antifungal activities against a panel of fungi, including Fusarium graminearum, Cryptococcus neoformans, and several Candida sp., and also significant antibacterial activities. With fluorescence-based whole cell assays, the aryl amphiphilic kanamycins were observed to permeabilize fungal surface membranes at faster rates than bacterial surface membranes. Also, the antifungal action of the amphiphilic kanamycins was observed to occur in a biphasic mode with an initial fast phase correlated with rapid membrane permeabilization at subminimal inhibitory concentrations and a slower phase membrane permeabilization that elevates the reactive oxygen species production leading to cell death. Inactive hydrophobic amphiphilic kanamycins displayed no membrane permeabilization. The results offer cost-effective methods for producing amphiphilic kanamycins and reveal insights into how nonfungal specific amphiphilic kanamycins can be employed for fungal specific diagnostic and therapeutic applications.
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Affiliation(s)
- Yagya Prasad Subedi
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Paul Roberts
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Michelle Grilley
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Jon Y. Takemoto
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Cheng-Wei Tom Chang
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
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16
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Koh JJ, Lin S, Bai Y, Sin WWL, Aung TT, Li J, Chandra V, Pervushin K, Beuerman RW, Liu S. Antimicrobial activity profiles of Amphiphilic Xanthone derivatives are a function of their molecular Oligomerization. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2281-2298. [PMID: 29782818 DOI: 10.1016/j.bbamem.2018.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/09/2018] [Accepted: 05/16/2018] [Indexed: 01/01/2023]
Abstract
Currently, membrane-targeting small antimicrobial peptidomimetics (SAP) are important in antibiotic development because bacteria appear to develop resistance to these surface-active compounds less readily. However, the molecular membrane-targeting action of SAPs has received little attention. In this study, we investigated the effect of oligomerization of amphiphilic xanthone, a model SAP, on its antimicrobial properties against both Gram-positive and Gram-negative bacteria. First, oligomer formation by an amphiphilic xanthone, compound 2 (also coded as AM052), was investigated via solution-state nuclear magnetic resonance (NMR) spectroscopy. Then, the effects of oligomerization on membrane disruption were further studied via biophysical approaches. The results showed that the antimicrobial activities of SAPs develop in several stages: oligomer formation in aqueous solution, initial binding of oligomers to the membrane-water interface followed by insertion into the membrane bilayer, aggregation of antimicrobial oligomers in the membrane, and induced membrane leakage. Ultimately, the presence of the oligomers in the bacterial membrane leads to decreased membrane fluidity and bacterial cell death. Interestingly, the early formation of large oligomers leads to stronger membrane disruption and more rapid bacterial killing. However, reduced antimicrobial activities against Gram-negative bacteria were observed for compounds that formed larger oligomers because the LPS layer acts as a barrier to large complexes. Taken together, our results suggest that oligomerization of SAPs has a strong impact on their antimicrobial properties.
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Affiliation(s)
- Jun-Jie Koh
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore
| | - Shuimu Lin
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore
| | - Yang Bai
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore; School of Biological Sciences, Nanyang Technological University, 637551, Singapore
| | - Wendy Wan Ling Sin
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore
| | - Thet Tun Aung
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore
| | - Jianguo Li
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore; Bioinformatics Institute, 138671, Singapore
| | - Verma Chandra
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore; Bioinformatics Institute, 138671, Singapore
| | - Konstantin Pervushin
- School of Biological Sciences, Nanyang Technological University, 637551, Singapore.
| | - Roger W Beuerman
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore; Duke-NUS Medical School, SRP Neuroscience and Behavioral Disorders, 169857, Singapore.
| | - Shouping Liu
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore; Duke-NUS Medical School, SRP Neuroscience and Behavioral Disorders, 169857, Singapore.
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17
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Steinbuch KB, Benhamou RI, Levin L, Stein R, Fridman M. Increased Degree of Unsaturation in the Lipid of Antifungal Cationic Amphiphiles Facilitates Selective Fungal Cell Disruption. ACS Infect Dis 2018; 4:825-836. [PMID: 29419285 DOI: 10.1021/acsinfecdis.7b00272] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Antimicrobial cationic amphiphiles derived from aminoglycosides act through cell membrane permeabilization but have limited selectivity for microbial cell membranes. Herein, we report that an increased degree of unsaturation in the fatty acid segment of antifungal cationic amphiphiles derived from the aminoglycoside tobramycin significantly reduced toxicity to mammalian cells. A collection of tobramycin-derived cationic amphiphiles substituted with C18 lipid chains varying in degree of unsaturation and double bond configuration were synthesized. All had potent activity against a panel of important fungal pathogens including strains with resistance to a variety of antifungal drugs. The tobramycin-derived cationic amphiphile substituted with linolenic acid with three cis double bonds (compound 6) was up to an order of magnitude less toxic to mammalian cells than cationic amphiphiles composed of lipids with a lower degree of unsaturation and than the fungal membrane disrupting drug amphotericin B. Compound 6 was 12-fold more selective (red blood cell hemolysis relative to antifungal activity) than compound 1, the derivative with a fully saturated lipid chain. Notably, compound 6 disrupted the membranes of fungal cells without affecting the viability of cocultured mammalian cells. This study demonstrates that the degree of unsaturation and the configuration of the double bond in lipids of cationic amphiphiles are important parameters that, if optimized, result in compounds with broad spectrum and potent antifungal activity as well as reduced toxicity toward mammalian cells.
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Affiliation(s)
- Kfir B. Steinbuch
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel 6997801
| | - Raphael I. Benhamou
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel 6997801
| | - Lotan Levin
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel 6997801
| | - Reuven Stein
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel 6997801
| | - Micha Fridman
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel 6997801
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18
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Fosso MY, Shrestha SK, Thamban Chandrika N, Dennis EK, Green KD, Garneau-Tsodikova S. Differential Effects of Linkers on the Activity of Amphiphilic Tobramycin Antifungals. Molecules 2018; 23:molecules23040899. [PMID: 29652845 PMCID: PMC5971061 DOI: 10.3390/molecules23040899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/08/2023] Open
Abstract
As the threat associated with fungal infections continues to rise and the availability of antifungal drugs remains a concern, it becomes obvious that the need to bolster the antifungal armamentarium is urgent. Building from our previous findings of tobramycin (TOB) derivatives with antifungal activity, we further investigate the effects of various linkers on the biological activity of these aminoglycosides. Herein, we analyze how thioether, sulfone, triazole, amide, and ether functionalities affect the antifungal activity of alkylated TOB derivatives against 22 Candida, Cryptococcus, and Aspergillus species. We also evaluate their impact on the hemolysis of murine erythrocytes and the cytotoxicity against mammalian cell lines. While the triazole linker appears to confer optimal activity overall, all of the linkers incorporated into the TOB derivatives resulted in compounds that are very effective against the Cryptococcus neoformans species, with MIC values ranging from 0.48 to 3.9 μg/mL.
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Affiliation(s)
- Marina Y Fosso
- 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.
| | - 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.
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
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19
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Niu Y, Wang M, Cao Y, Nimmagadda A, Hu J, Wu Y, Cai J, Ye XS. Rational Design of Dimeric Lysine N-Alkylamides as Potent and Broad-Spectrum Antibacterial Agents. J Med Chem 2018; 61:2865-2874. [PMID: 29569910 DOI: 10.1021/acs.jmedchem.7b01704] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antibiotic resistance is one of the biggest threats to public health, and new antibacterial agents hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Utilizing dimerization strategy, we rationally designed and efficiently synthesized a new series of small molecule dimeric lysine alkylamides as mimics of AMPs. Evaluation of these mimics against a panel of Gram-positive and Gram-negative bacteria including MDR strains was performed, and a broad-spectrum and potent compound 3d was identified. This compound displayed high specificity toward bacteria over mammalian cell. Time-kill kinetics and mechanistic studies suggest that compound 3d quickly eliminated bacteria in a bactericidal mode by disrupting bacterial cell membrane. In addition, lead compound 3d could inhibit biofilm formation and did not develop drug resistance in S. aureus and E. coli over 14 passages. These results suggested that dimeric lysine nonylamide has immense potential as a new type of novel small molecular agent to combat antibiotic resistance.
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Affiliation(s)
- Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Minghui Wang
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Alekhya Nimmagadda
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Jianxing Hu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Yanfen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Jianfeng Cai
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
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20
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Thamban Chandrika N, Garneau-Tsodikova S. Comprehensive review of chemical strategies for the preparation of new aminoglycosides and their biological activities. Chem Soc Rev 2018; 47:1189-1249. [PMID: 29296992 PMCID: PMC5818290 DOI: 10.1039/c7cs00407a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A systematic analysis of all synthetic and chemoenzymatic methodologies for the preparation of aminoglycosides for a variety of applications (therapeutic and agricultural) reported in the scientific literature up to 2017 is presented. This comprehensive analysis of derivatization/generation of novel aminoglycosides and their conjugates is divided based on the types of modifications used to make the new derivatives. Both the chemical strategies utilized and the biological results observed are covered. Structure-activity relationships based on different synthetic modifications along with their implications for activity and ability to avoid resistance against different microorganisms are also presented.
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Affiliation(s)
- Nishad Thamban Chandrika
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
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21
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Domalaon R, Yang X, Lyu Y, Zhanel GG, Schweizer F. Polymyxin B 3-Tobramycin Hybrids with Pseudomonas aeruginosa-Selective Antibacterial Activity and Strong Potentiation of Rifampicin, Minocycline, and Vancomycin. ACS Infect Dis 2017; 3:941-954. [PMID: 29045123 DOI: 10.1021/acsinfecdis.7b00145] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
There is an urgent need to develop novel antibacterial agents able to eradicate drug-resistant Gram-negative pathogens such as Pseudomonas aeruginosa. Antimicrobial hybrids have emerged as a promising strategy to combat bacterial resistance, as a stand-alone drug but also as an adjuvant in combination with existing antibiotics. Herein, we report for the first time the synthesis and biological evaluation of polymyxin-aminoglycoside heterodimers composed of polymyxin B3 covalently linked to tobramycin via an aliphatic hydrocarbon linker. The polymyxin B3-tobramycin hybrids demonstrate potent activity against carbapenem-resistant as well as multidrug- or extensively drug-resistant (MDR/XDR) P. aeruginosa clinical isolates. Furthermore, the most potent hybrid was able to synergize with currently used antibiotics against wild-type and MDR/XDR P. aeruginosa but also against Acinetobacter baumannii as well. The promising biological activity described herein warrants additional studies into design and development of new antimicrobial hybrids able to surmount the problem of antimicrobial resistance.
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Affiliation(s)
- Ronald Domalaon
- Department
of Chemistry, Faculty of Science, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - Xuan Yang
- Department
of Chemistry, Faculty of Science, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - Yinfeng Lyu
- Department
of Chemistry, Faculty of Science, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
- Institute
of Animal Nutrition, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - George G. Zhanel
- Department
of Medical Microbiology and Infectious Diseases, Rady Faculty of Health
Sciences, University of Manitoba, 727 McDermot Avenue, Winnipeg, Manitoba R3T 1R9, Canada
| | - Frank Schweizer
- Department
of Chemistry, Faculty of Science, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
- Department
of Medical Microbiology and Infectious Diseases, Rady Faculty of Health
Sciences, University of Manitoba, 727 McDermot Avenue, Winnipeg, Manitoba R3T 1R9, Canada
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22
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Salta J, Benhamou RI, Herzog IM, Fridman M. Tuning the Effects of Bacterial Membrane Permeability through Photo-Isomerization of Antimicrobial Cationic Amphiphiles. Chemistry 2017; 23:12724-12728. [PMID: 28727190 DOI: 10.1002/chem.201703010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Indexed: 11/08/2022]
Abstract
Several important antimicrobial drugs act by permeabilizing cell membranes. In this study, we showed that the intensity of membrane permeability caused by antimicrobial cationic amphiphiles can be modified not only by their concentration but also through light-induced isomerization of their lipid segment. Two types of photo-isomerizable cationic amphiphiles were developed and the effects of photo-isomerization on bacterial growth and membrane permeability were evaluated. One photo-isomer inhibited cell growth and division, whereas the other photo-isomer led to a rapid and lethal bacterial membrane-disrupting effect. The switch from "on" to "off" can be obtained by either the cis- or trans-isomer depending on the bacterial strain and the type of cationic amphiphile. These cationic amphiphiles offer a novel tool for research and industrial applications that require light-controlled bacterial membrane permeabilization.
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Affiliation(s)
- Joana Salta
- School of Chemistry, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Raphael I Benhamou
- School of Chemistry, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Ido M Herzog
- School of Chemistry, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Micha Fridman
- School of Chemistry, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
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23
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Bacot-Davis VR, Bassenden AV, Sprules T, Berghuis AM. Effect of solvent and protein dynamics in ligand recognition and inhibition of aminoglycoside adenyltransferase 2″-Ia. Protein Sci 2017; 26:1852-1863. [PMID: 28734024 DOI: 10.1002/pro.3224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/24/2017] [Accepted: 07/03/2017] [Indexed: 01/15/2023]
Abstract
The aminoglycoside modifying enzyme (AME) ANT(2″)-Ia is a significant target for next generation antibiotic development. Structural studies of a related aminoglycoside-modifying enzyme, ANT(3″)(9), revealed this enzyme contains dynamic, disordered, and well-defined segments that modulate thermodynamically before and after antibiotic binding. Characterizing these structural dynamics is critical for in situ screening, design, and development of contemporary antibiotics that can be implemented in a clinical setting to treat potentially lethal, antibiotic resistant, human infections. Here, the first NMR structural ensembles of ANT(2″)-Ia are presented, and suggest that ATP-aminoglycoside binding repositions the nucleotidyltransferase (NT) and C-terminal domains for catalysis to efficiently occur. Residues involved in ligand recognition were assessed by site-directed mutagenesis. In vitro activity assays indicate a critical role for I129 toward aminoglycoside modification in addition to known catalytic D44, D46, and D48 residues. These observations support previous claims that ANT aminoglycoside sub-class promiscuity is not solely due to binding cleft size, or inherent partial disorder, but can be controlled by ligand modulation on distinct dynamic and thermodynamic properties of ANTs under cellular conditions. Hydrophobic interactions in the substrate binding cleft, as well as solution dynamics in the C-terminal tail of ANT(2″)-Ia, advocate toward design of kanamycin-derived cationic lipid aminoglycoside analogs, some of which have already shown antimicrobial activity in vivo against kanamycin and gentamicin-resistant P. aeruginosa. This data will drive additional in silico, next generation antibiotic development for future human use to combat increasingly prevalent antimicrobial resistance.
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Affiliation(s)
- Valjean R Bacot-Davis
- McGill University, Biochemistry, 3649 Promenade Sir William Osler Room 470, Montreal, QC H3A 0G4, Canada
| | - Angelia V Bassenden
- McGill University, Biochemistry, 3649 Promenade Sir William Osler Room 470, Montreal, QC H3A 0G4, Canada
| | - Tara Sprules
- McGill University, Biochemistry, 3649 Promenade Sir William Osler Room 470, Montreal, QC H3A 0G4, Canada.,Quebec/Eastern Canada NMR Centre, Pulp & Paper Research Centre, 3420 University St. Room 023, Montreal, QC H3A 2A7, Canada
| | - Albert M Berghuis
- McGill University, Biochemistry, 3649 Promenade Sir William Osler Room 470, Montreal, QC H3A 0G4, Canada
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24
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Allam A, Maigre L, Alves de Sousa R, Dumont E, Vergalli J, Pagès JM, Artaud I. New amphiphilic neamine conjugates bearing a metal binding motif active against MDR E. aerogenes Gram-negative bacteria. Eur J Med Chem 2017; 127:748-756. [DOI: 10.1016/j.ejmech.2016.10.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/29/2016] [Accepted: 10/23/2016] [Indexed: 01/22/2023]
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25
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Ngo HX, Shrestha SK, Green KD, Garneau-Tsodikova S. Development of ebsulfur analogues as potent antibacterials against methicillin-resistant Staphylococcus aureus. Bioorg Med Chem 2016; 24:6298-6306. [PMID: 27073054 PMCID: PMC5045767 DOI: 10.1016/j.bmc.2016.03.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/26/2016] [Accepted: 03/30/2016] [Indexed: 11/21/2022]
Abstract
Antibiotic resistance is a worldwide problem that needs to be addressed. Staphylococcus aureus is one of the dangerous "ESKAPE" pathogens that rapidly evolve and evade many current FDA-approved antibiotics. Thus, there is an urgent need for new anti-MRSA compounds. Ebselen (also known as 2-phenyl-1,2-benzisoselenazol-3(2H)-one) has shown promising activity in clinical trials for cerebral ischemia, bipolar disorder, and noise-induced hearing loss. Recently, there has been a renewed interest in exploring the antibacterial properties of ebselen. In this study, we synthesized an ebselen-inspired library of 33 compounds where the selenium atom has been replaced by sulfur (ebsulfur derivatives) and evaluated them against a panel of drug-sensitive and drug-resistant S. aureus and non-S. aureus strains. Within our library, we identified three outstanding analogues with potent activity against all S. aureus strains tested (MIC values mostly ⩽2μg/mL), and numerous additional ones with overall very good to good antibacterial activity (1-7.8μg/mL). We also characterized the time-kill analysis, anti-biofilm ability, hemolytic activity, mammalian cytotoxicity, membrane-disruption ability, and reactive oxygen species (ROS) production of some of these analogues.
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Affiliation(s)
- Huy X Ngo
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, KY 40536-0596, USA
| | - Sanjib K Shrestha
- 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
| | - 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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26
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Zhang Q, Alfindee MN, Shrestha JP, Nziko VDPN, Kawasaki Y, Peng X, Takemoto JY, Chang CWT. Divergent Synthesis of Three Classes of Antifungal Amphiphilic Kanamycin Derivatives. J Org Chem 2016; 81:10651-10663. [DOI: 10.1021/acs.joc.6b01189] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Qian Zhang
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
| | - Madher N. Alfindee
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
| | - Jaya P. Shrestha
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
| | - Vincent de Paul Nzuwah Nziko
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
| | - Yukie Kawasaki
- Department
of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Xinrui Peng
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
| | - Jon Y. Takemoto
- Department
of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Cheng-Wei Tom Chang
- Department
of Chemistry and Biochemistry, Utah State University, 0300 Old
Main Hill, Logan, Utah 84322-0300, United States
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27
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Zimmermann L, Das I, Désiré J, Sautrey G, Barros R. S. V, El Khoury M, Mingeot-Leclercq MP, Décout JL. New Broad-Spectrum Antibacterial Amphiphilic Aminoglycosides Active against Resistant Bacteria: From Neamine Derivatives to Smaller Neosamine Analogues. J Med Chem 2016; 59:9350-9369. [DOI: 10.1021/acs.jmedchem.6b00818] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Louis Zimmermann
- Département
de Pharmacochimie Moléculaire, ICMG FR 2607, University Grenoble Alpes/CNRS, UMR 5063, 470 Rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Indrajit Das
- Département
de Pharmacochimie Moléculaire, ICMG FR 2607, University Grenoble Alpes/CNRS, UMR 5063, 470 Rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Jérôme Désiré
- Département
de Pharmacochimie Moléculaire, ICMG FR 2607, University Grenoble Alpes/CNRS, UMR 5063, 470 Rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Guillaume Sautrey
- Unité
de Pharmacologie Cellulaire et Moléculaire, Louvain Drug Research
Institute, Université Catholique de Louvain, Avenue E.
Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Vinicius Barros R. S.
- Département
de Pharmacochimie Moléculaire, ICMG FR 2607, University Grenoble Alpes/CNRS, UMR 5063, 470 Rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Micheline El Khoury
- Unité
de Pharmacologie Cellulaire et Moléculaire, Louvain Drug Research
Institute, Université Catholique de Louvain, Avenue E.
Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Marie-Paule Mingeot-Leclercq
- Unité
de Pharmacologie Cellulaire et Moléculaire, Louvain Drug Research
Institute, Université Catholique de Louvain, Avenue E.
Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Jean-Luc Décout
- Département
de Pharmacochimie Moléculaire, ICMG FR 2607, University Grenoble Alpes/CNRS, UMR 5063, 470 Rue de la Chimie, BP 53, F-38041 Grenoble, France
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28
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Benhamou RI, Steinbuch KB, Fridman M. Antifungal Imidazole-Decorated Cationic Amphiphiles with Markedly Low Hemolytic Activity. Chemistry 2016; 22:11148-51. [DOI: 10.1002/chem.201602198] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Raphael I. Benhamou
- School of Chemistry; Raymond & Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; 6997801 Tel Aviv Israel
| | - Kfir B. Steinbuch
- School of Chemistry; Raymond & Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; 6997801 Tel Aviv Israel
| | - Micha Fridman
- School of Chemistry; Raymond & Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; 6997801 Tel Aviv Israel
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29
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Mingeot-Leclercq MP, Décout JL. Bacterial lipid membranes as promising targets to fight antimicrobial resistance, molecular foundations and illustration through the renewal of aminoglycoside antibiotics and emergence of amphiphilic aminoglycosides. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00503e] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Membrane anionic lipids as attractive targets in the design of amphiphilic antibacterial drugs active against resistant bacteria: molecular foundations and examples.
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Affiliation(s)
- Marie-Paule Mingeot-Leclercq
- Louvain Drug Research Institute
- Université catholique de Louvain
- Unité de Pharmacologie Cellulaire et Moléculaire
- Brussels
- Belgium
| | - Jean-Luc Décout
- Département de Pharmacochimie Moléculaire
- Université Grenoble Alpes/CNRS
- UMR 5063
- ICMG FR 2607
- F-38041 Grenoble
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30
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Steinbuch KB, Fridman M. Mechanisms of resistance to membrane-disrupting antibiotics in Gram-positive and Gram-negative bacteria. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00389j] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A diverse repertoire of mechanisms has evolved to confer resistance to bacterial membrane disrupting antimicrobial cationic amphiphiles.
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Affiliation(s)
- Kfir B. Steinbuch
- School of Chemistry
- Beverly Raymond Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - Micha Fridman
- School of Chemistry
- Beverly Raymond Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
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31
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Chandra S, Chowdhuri AR, Mahto TK, Samui A, Sahu SK. One-step synthesis of amikacin modified fluorescent carbon dots for the detection of Gram-negative bacteria like Escherichia coli. RSC Adv 2016. [DOI: 10.1039/c6ra15778e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, we report a one-step strategy to synthesize amikacin modified fluorescent carbon dots (CDs@amikacin) for assaying pathogenic bacteria, Escherichia coli.
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Affiliation(s)
- Soumen Chandra
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | | | | | - Arpita Samui
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - Sumanta kumar Sahu
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
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32
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Shaul P, Benhamou RI, Herzog IM, Louzoun Zada S, Ebenstein Y, Fridman M. Synthesis and evaluation of membrane permeabilizing properties of cationic amphiphiles derived from the disaccharide trehalose. Org Biomol Chem 2016; 14:3012-5. [DOI: 10.1039/c6ob00031b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cationic amphiphiles derived from trehalose have been synthesized; trehalose analogues substituted withn-pentyl orn-hexyl ethers exhibited membrane disrupting activities against clinically important Gram positive and Gram negative bacteria and fungi.
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Affiliation(s)
- P. Shaul
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - R. I. Benhamou
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - I. M. Herzog
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - S. Louzoun Zada
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - Y. Ebenstein
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - M. Fridman
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
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33
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Bera S, Mondal D, Palit S, Schweizer F. Structural modifications of the neomycin class of aminoglycosides. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00079g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review encompasses comprehensive literature on synthetic modification and biological activities of clinically used neomycin-class aminoglycoside antibiotics to alleviate dose-related toxicity and pathogenic resistance.
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Affiliation(s)
- Smritilekha Bera
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | - Dhananjoy Mondal
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | - Subhadeep Palit
- Organic and Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology Campus
- Kolkata-700 032
- India
| | - Frank Schweizer
- Department of Chemistry and Medical Microbiology
- University of Manitoba
- Winnipeg
- Canada
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34
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Fosso MY, Shrestha SK, Green KD, Garneau-Tsodikova S. Synthesis and Bioactivities of Kanamycin B-Derived Cationic Amphiphiles. J Med Chem 2015; 58:9124-32. [PMID: 26592740 DOI: 10.1021/acs.jmedchem.5b01375] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cationic amphiphiles derived from aminoglycosides (AGs) have been shown to exhibit enhanced antimicrobial activity. Through the attachment of hydrophobic residues such as linear alkyl chains on the AG backbone, interesting antibacterial and antifungal agents with a novel mechanism of action have been developed. Herein, we report the design and synthesis of seven kanamycin B (KANB) derivatives. Their antibacterial and antifungal activities, along with resistance/enzymatic, hemolytic, and cytotoxicity assays were also studied. Two of these compounds, with a C12 and C14 aliphatic chain attached at the 6″-position of KANB through a thioether linkage, exhibited good antibacterial and antifungal activity, were poorer substrates than KANB for several AG-modifying enzymes, and could delay the development of resistance in bacteria and fungi. Also, they were both relatively less hemolytic than the known membrane targeting antibiotic gramicidin and the known antifungal agent amphotericin B and were not toxic at their antifungal MIC values. Their oxidation to sulfones was also demonstrated to have no effect on their activities. Moreover, they both acted synergistically with posaconazole, an azole currently used in the treatment of human fungal infections.
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Affiliation(s)
- Marina Y Fosso
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Sanjib K Shrestha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, 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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35
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Chandrika NT, Garneau-Tsodikova S. A review of patents (2011-2015) towards combating resistance to and toxicity of aminoglycosides. MEDCHEMCOMM 2015; 7:50-68. [PMID: 27019689 PMCID: PMC4806794 DOI: 10.1039/c5md00453e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Since the discovery of the first aminoglycoside (AG), streptomycin, in 1943, these broad-spectrum antibiotics have been extensively used for the treatment of Gram-negative and Gram-positive bacterial infections. The inherent toxicity (ototoxicity and nephrotoxicity) associated with their long-term use as well as the emergence of resistant bacterial strains have limited their usage. Structural modifications of AGs by AG-modifying enzymes, reduced target affinity caused by ribosomal modification, and decrease in their cellular concentration by efflux pumps have resulted in resistance towards AGs. However, the last decade has seen a renewed interest among the scientific community for AGs as exemplified by the recent influx of scientific articles and patents on their therapeutic use. In this review, we use a non-conventional approach to put forth this renaissance on AG development/application by summarizing all patents filed on AGs from 2011-2015 and highlighting some related publications on the most recent work done on AGs to overcome resistance and improving their therapeutic use while reducing ototoxicity and nephrotoxicity. We also present work towards developing amphiphilic AGs for use as fungicides as well as that towards repurposing existing AGs for potential newer applications.
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Affiliation(s)
- Nishad Thamban Chandrika
- University of Kentucky, Department of Pharmaceutical Sciences, 789 South Limestone Street, Lexington, KY, USA. Fax: 859-257-7585; Tel: 859-218-1686
| | - Sylvie Garneau-Tsodikova
- University of Kentucky, Department of Pharmaceutical Sciences, 789 South Limestone Street, Lexington, KY, USA. Fax: 859-257-7585; Tel: 859-218-1686
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36
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Benhamou RI, Shaul P, Herzog IM, Fridman M. Di-N-Methylation of Anti-Gram-Positive Aminoglycoside-Derived Membrane Disruptors Improves Antimicrobial Potency and Broadens Spectrum to Gram-Negative Bacteria. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506814] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Benhamou RI, Shaul P, Herzog IM, Fridman M. Di-N-Methylation of Anti-Gram-Positive Aminoglycoside-Derived Membrane Disruptors Improves Antimicrobial Potency and Broadens Spectrum to Gram-Negative Bacteria. Angew Chem Int Ed Engl 2015; 54:13617-21. [DOI: 10.1002/anie.201506814] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Indexed: 11/12/2022]
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38
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Jiang L, Watkins D, Jin Y, Gong C, King A, Washington AZ, Green KD, Garneau-Tsodikova S, Oyelere AK, Arya DP. Rapid synthesis, RNA binding, and antibacterial screening of a peptidic-aminosugar (PA) library. ACS Chem Biol 2015; 10:1278-89. [PMID: 25706406 DOI: 10.1021/cb5010367] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A 215-member mono- and diamino acid peptidic-aminosugar (PA) library, with neomycin as the model aminosugar, was systematically and rapidly synthesized via solid phase synthesis. Antibacterial activities of the PA library, on 13 bacterial strains (seven Gram-positive and six Gram-negative bacterial strains), and binding affinities of the PA library for a 27-base model of the bacterial 16S ribosomal A-site RNA were evaluated using high-throughput screening. The results of the two assays were correlated using Ribosomal Binding-Bacterial Inhibition Plot (RB-BIP) analysis to provide structure-activity relationship (SAR) information. From this work, we have identified PAs that can discriminate the E. coli A-site from the human A-site by up to a 28-fold difference in binding affinity. Aminoglycoside-modifying enzyme activity studies indicate that APH(2″)-Ia showed nearly complete removal of activity with a number of PAs. The synthesis of the compound library and screening can both be performed rapidly, allowing for an iterative process of aminoglycoside synthesis and screening of PA libraries for optimal binding and antibacterial activity for lead identification.
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Affiliation(s)
- Liuwei Jiang
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | | | - Yi Jin
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Changjun Gong
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ada King
- NUBAD, LLC, Greenville, South Carolina 29605, United States
| | - Arren Z. Washington
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Keith D. Green
- College
of Pharmacy, Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Sylvie Garneau-Tsodikova
- College
of Pharmacy, Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Adegboyega K. Oyelere
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Dev P. Arya
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
- NUBAD, LLC, Greenville, South Carolina 29605, United States
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39
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Fosso M, AlFindee MN, Zhang Q, Nziko VDPN, Kawasaki Y, Shrestha SK, Bearss J, Gregory R, Takemoto JY, Chang CWT. Structure-activity relationships for antibacterial to antifungal conversion of kanamycin to amphiphilic analogues. J Org Chem 2015; 80:4398-411. [PMID: 25826012 DOI: 10.1021/acs.joc.5b00248] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel fungicides are urgently needed. It was recently reported that the attachment of an octyl group at the O-4″ position of kanamycin B converts this antibacterial aminoglycoside into a novel antifungal agent. To elucidate the structure-activity relationship (SAR) for this phenomenon, a lead compound FG03 with a hydroxyl group replacing the 3″-NH2 group of kanamycin B was synthesized. FG03's antifungal activity and synthetic scheme inspired the synthesis of a library of kanamycin B analogues alkylated at various hydroxyl groups. SAR studies of the library revealed that for antifungal activity the O-4″ position is the optimal site for attaching a linear alkyl chain and that the 3″-NH2 and 6″-OH groups of the kanamycin B parent molecule are not essential for antifungal activity. The discovery of lead compound, FG03, is an example of reviving clinically obsolete drugs like kanamycin by simple chemical modification and an alternative strategy for discovering novel antimicrobials.
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Affiliation(s)
- Marina Fosso
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Madher N AlFindee
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Qian Zhang
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Vincent de Paul Nzuwah Nziko
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Yukie Kawasaki
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Sanjib K Shrestha
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Jeremiah Bearss
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Rylee Gregory
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Jon Y Takemoto
- ‡Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322-5305, United States
| | - Cheng-Wei Tom Chang
- †Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
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40
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Gorityala BK, Guchhait G, Schweizer F. Amphiphilic Aminoglycoside Antimicrobials in Antibacterial Discovery. CARBOHYDRATES IN DRUG DESIGN AND DISCOVERY 2015. [DOI: 10.1039/9781849739993-00255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Amphiphilic aminoglycoside antimicrobials (AAAs) are an emerging class of polycationic antibacterial agents with broad-spectrum antibacterial activity. In contrast to aminoglycosides, which interfere with protein synthesis by interacting with the 30S ribosomal subunit, AAAs appear to target the bacterial cell wall by interactions with extracellular lipids or proteins or by enhancing the permeability of the bacterial cell wall. The physicochemical similarities between amphiphilic aminoglycosides and antimicrobial peptides, another class of polycationic amphiphiles with broad-spectrum antibacterial activity, suggest similar mode(s) of action. However, in contrast to antimicrobial peptides, AAAs are not composed of peptide bonds and as such promise to display superior metabolic stability. As a result, AAAs may be considered to be a novel class of antimicrobial peptidomimetics. Many AAAs possess impressive potent antibacterial activity against Gram-positive and Gram-negative bacteria, especially against bacterial strains that are resistant to clinically used antibiotics. In summary, AAAs promise to provide a new and rich source of antibacterial lead structures to combat antibiotic-resistant and multidrug-resistant pathogens.
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Affiliation(s)
| | - Goutam Guchhait
- Department of Chemistry, University of Manitoba Winnipeg, MB R3T 2N2 Canada
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba Winnipeg, MB R3T 2N2 Canada
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41
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Guchhait G, Altieri A, Gorityala B, Yang X, Findlay B, Zhanel GG, Mookherjee N, Schweizer F. Amphiphilic Tobramycins with Immunomodulatory Properties. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500598] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Guchhait G, Altieri A, Gorityala B, Yang X, Findlay B, Zhanel GG, Mookherjee N, Schweizer F. Amphiphilic Tobramycins with Immunomodulatory Properties. Angew Chem Int Ed Engl 2015; 54:6278-82. [DOI: 10.1002/anie.201500598] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Indexed: 11/10/2022]
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43
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Fosso MY, Li Y, Garneau-Tsodikova S. New trends in aminoglycosides use. MEDCHEMCOMM 2014; 5:1075-1091. [PMID: 25071928 PMCID: PMC4111210 DOI: 10.1039/c4md00163j] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Despite their inherent toxicity and the acquired bacterial resistance that continuously threaten their long-term clinical use, aminoglycosides (AGs) still remain valuable components of the antibiotic armamentarium. Recent literature shows that the AGs' role has been further expanded as multi-tasking players in different areas of study. This review aims at presenting some of the new trends observed in the use of AGs in the past decade, along with the current understanding of their mechanisms of action in various bacterial and eukaryotic cellular processes.
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Affiliation(s)
- Marina Y. Fosso
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy, BioPharm Complex, Room 423, 789 South Limestone Street, Lexington, KY, 40536-0596, U.S.A
| | - Yijia Li
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy, BioPharm Complex, Room 423, 789 South Limestone Street, Lexington, KY, 40536-0596, U.S.A
| | - Sylvie Garneau-Tsodikova
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy, BioPharm Complex, Room 423, 789 South Limestone Street, Lexington, KY, 40536-0596, U.S.A
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44
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New amphiphilic neamine derivatives active against resistant Pseudomonas aeruginosa and their interactions with lipopolysaccharides. Antimicrob Agents Chemother 2014; 58:4420-30. [PMID: 24867965 DOI: 10.1128/aac.02536-13] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The development of novel antimicrobial agents is urgently required to curb the widespread emergence of multidrug-resistant bacteria like colistin-resistant Pseudomonas aeruginosa. We previously synthesized a series of amphiphilic neamine derivatives active against bacterial membranes, among which 3',6-di-O-[(2"-naphthyl)propyl]neamine (3',6-di2NP), 3',6-di-O-[(2"-naphthyl)butyl]neamine (3',6-di2NB), and 3',6-di-O-nonylneamine (3',6-diNn) showed high levels of activity and low levels of cytotoxicity (L. Zimmermann et al., J. Med. Chem. 56:7691-7705, 2013). We have now further characterized the activity of these derivatives against colistin-resistant P. aeruginosa and studied their mode of action; specifically, we characterized their ability to interact with lipopolysaccharide (LPS) and to alter the bacterial outer membrane (OM). The three amphiphilic neamine derivatives were active against clinical colistin-resistant strains (MICs, about 2 to 8 μg/ml), The most active one (3',6-diNn) was bactericidal at its MIC and inhibited biofilm formation at 2-fold its MIC. They cooperatively bound to LPSs, increasing the outer membrane permeability. Grafting long and linear alkyl chains (nonyl) optimized binding to LPS and outer membrane permeabilization. The effects of amphiphilic neamine derivatives on LPS micelles suggest changes in the cross-bridging of lipopolysaccharides and disordering in the hydrophobic core of the micelles. The molecular shape of the 3',6-dialkyl neamine derivatives induced by the nature of the grafted hydrophobic moieties (naphthylalkyl instead of alkyl) and the flexibility of the hydrophobic moiety are critical for their fluidifying effect and their ability to displace cations bridging LPS. Results from this work could be exploited for the development of new amphiphilic neamine derivatives active against colistin-resistant P. aeruginosa.
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45
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Strategies to overcome the action of aminoglycoside-modifying enzymes for treating resistant bacterial infections. Future Med Chem 2014; 5:1285-309. [PMID: 23859208 DOI: 10.4155/fmc.13.80] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Shortly after the discovery of the first antibiotics, bacterial resistance began to emerge. Many mechanisms give rise to resistance; the most prevalent mechanism of resistance to the aminoglycoside (AG) family of antibiotics is the action of aminoglycoside-modifying enzymes (AMEs). Since the identification of these modifying enzymes, many efforts have been put forth to prevent their damaging alterations of AGs. These diverse strategies are discussed within this review, including: creating new AGs that are unaffected by AMEs; developing inhibitors of AMEs to be co-delivered with AGs; or regulating AME expression. Modern high-throughput methods as well as drug combinations and repurposing are highlighted as recent drug-discovery efforts towards fighting the increasing antibiotic resistance crisis.
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46
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Herzog IM, Fridman M. Design and synthesis of membrane-targeting antibiotics: from peptides- to aminosugar-based antimicrobial cationic amphiphiles. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00012a] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Infections caused by drug resistant and/or slow-growing bacteria are increasingly becoming some of the greatest challenges of health organizations worldwide.
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Affiliation(s)
- Ido M. Herzog
- School of Chemistry
- Raymond and Beverley Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - Micha Fridman
- School of Chemistry
- Raymond and Beverley Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
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47
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Abstract
The attachment of alkyl and other hydrophobic groups to traditional antibacterial kanamycins and neomycins creates amphiphilic aminoglycosides with altered antimicrobial properties. In this review, we summarize the discovery of amphiphilic kanamycins that are antifungal, but not antibacterial, and that inhibit the growth of fungi by perturbation of plasma membrane functions. With low toxicities against plant and mammalian cells, they appear to specifically target the fungal plasma membrane. These new antifungal agents offer new options for fighting fungal pathogens and are examples of reviving old drugs to confront new therapeutic challenges.
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Affiliation(s)
- C-W T Chang
- Department of Chemistry & Biochemistry, Utah State University, Logan, Utah 84322-0300 U.S.A
| | - J Y Takemoto
- Department of Biology, Utah State University, Logan, Utah 84322-5305 U.S.A
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48
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Berkov-Zrihen Y, Herzog IM, Feldman M, Fridman M. Site-Selective Displacement of Tobramycin Hydroxyls for Preparation of Antimicrobial Cationic Amphiphiles. Org Lett 2013; 15:6144-7. [DOI: 10.1021/ol4030138] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yifat Berkov-Zrihen
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ido M. Herzog
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Mark Feldman
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Micha Fridman
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
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49
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Zimmermann L, Bussière A, Ouberai M, Baussanne I, Jolivalt C, Mingeot-Leclercq MP, Décout JL. Tuning the Antibacterial Activity of Amphiphilic Neamine Derivatives and Comparison to Paromamine Homologues. J Med Chem 2013; 56:7691-705. [DOI: 10.1021/jm401148j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Louis Zimmermann
- Département
de Pharmacochimie Moléculaire, Université de Grenoble I/CNRS, UMR 5063, ICMG FR
2607, 470 rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Antoine Bussière
- Département
de Pharmacochimie Moléculaire, Université de Grenoble I/CNRS, UMR 5063, ICMG FR
2607, 470 rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Myriam Ouberai
- Unité de Pharmacologie Cellulaire et Moléculaire, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Isabelle Baussanne
- Département
de Pharmacochimie Moléculaire, Université de Grenoble I/CNRS, UMR 5063, ICMG FR
2607, 470 rue de la Chimie, BP 53, F-38041 Grenoble, France
| | - Claude Jolivalt
- Ecole Nationale de Chimie de Paris/CNRS, UMR
7573, 11 rue Pierre et Marie Curie, F-75231 Paris cedex 05, France
| | - Marie-Paule Mingeot-Leclercq
- Unité de Pharmacologie Cellulaire et Moléculaire, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 73, B1.73.05, B-1200 Brussels, Belgium
| | - Jean-Luc Décout
- Département
de Pharmacochimie Moléculaire, Université de Grenoble I/CNRS, UMR 5063, ICMG FR
2607, 470 rue de la Chimie, BP 53, F-38041 Grenoble, France
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50
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Di-alkylated paromomycin derivatives: Targeting the membranes of Gram positive pathogens that cause skin infections. Bioorg Med Chem 2013; 21:3624-31. [DOI: 10.1016/j.bmc.2013.03.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/08/2013] [Accepted: 03/11/2013] [Indexed: 11/20/2022]
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