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de Oliveira AS, Cenci AR, Gonçalves L, Thedy MEC, Justino A, Braga AL, Meier L. Chalcone Derivatives as Antibacterial Agents: An Updated Overview. Curr Med Chem 2024; 31:2314-2329. [PMID: 36803761 DOI: 10.2174/0929867330666230220140819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 11/20/2022] [Accepted: 12/01/2022] [Indexed: 02/22/2023]
Abstract
BACKGROUND The indiscriminate use of antibiotics brings an alarming reality: in 2050, bacterial resistance could be the main cause of death in the world, resulting in the death of 10 million people, according to the World Health Organization (WHO). In this sense, to combat bacterial resistance, several natural substances, including chalcones, have been described in relation to antibacterial, representing a potential tool for the discovery of new antibacterial drugs. OBJECTIVE The objective of this study is to perform a bibliographic survey and discuss the main contributions in the literature about the antibacterial potential of chalcones in the last 5 years. METHODS A search was carried out in the main repositories, for which the publications of the last 5 years were investigated and discussed. Unprecedented in this review, in addition to the bibliographic survey, molecular docking studies were carried out to exemplify the applicability of using one of the molecular targets for the design of new entities with antibacterial activity. RESULTS In the last 5 years, antibacterial activities were reported for several types of chalcones, for which activities were observed for both gram-positive and gram-negative bacteria with high potency, including MIC values in the nanomolar range. Molecular docking simulations demonstrated important intermolecular interactions between chalcones and residues from the enzymatic cavity of the enzyme DNA gyrase, one of the validated molecular targets in the development of new antibacterial agents. CONCLUSION The data presented demonstrate the potential of using chalcones in drug development programs with antibacterial properties, which may be useful to combat resistance, a worldwide public health problem.
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Affiliation(s)
- Aldo S de Oliveira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
| | - Arthur R Cenci
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
| | - Lucas Gonçalves
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
| | - Maria Eduarda C Thedy
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis-SC, Brazil
| | - Angelica Justino
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis-SC, Brazil
| | - Antônio L Braga
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis-SC, Brazil
| | - Lidiane Meier
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau-SC, Brazil
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Kim EY, Kumar SD, Bang JK, Ajish C, Yang S, Ganbaatar B, Kim J, Lee CW, Cho SJ, Shin SY. Evaluation of deoxythymidine-based cationic amphiphiles as antimicrobial, antibiofilm, and anti-inflammatory agents. Int J Antimicrob Agents 2023; 62:106909. [PMID: 37419291 DOI: 10.1016/j.ijantimicag.2023.106909] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 06/14/2023] [Accepted: 06/30/2023] [Indexed: 07/09/2023]
Abstract
OBJECTIVES We recently designed a series of cationic deoxythymidine-based amphiphiles that mimic the cationic amphipathic structure of antimicrobial peptides (AMPs). Among these amphiphiles, ADG-2e and ADL-3e displayed the highest selectivity against bacterial cells. In this study, ADG-2e and ADL-3e were evaluated for their potential as novel classes of antimicrobial, antibiofilm, and anti-inflammatory agents. METHODS Minimum inhibitory concentrations of ADG-2e and ADL-3e against bacteria were determined using the broth microdilution method. Proteolytic resistance against pepsin, trypsin, α-chymotrypsin, and proteinase K was determined by radial diffusion and HPLC analysis. Biofilm activity was investigated using the broth microdilution and confocal microscopy. The antimicrobial mechanism was investigated by membrane depolarization, cell membrane integrity analysis, scanning electron microscopy (SEM), genomic DNA influence and genomic DNA binding assay. Synergistic activity was evaluated using checkerboard method. Anti-inflammatory activity was investigated using ELISA and RT-PCR. RESULTS ADG-2e and ADL-3e showed good resistance to physiological salts and human serum, and a low incidence of drug resistance. Moreover, they exhibit proteolytic resistance against pepsin, trypsin, α-chymotrypsin, and proteinase K. ADG-2e and ADL-3e were found to kill bacteria by an intracellular target mechanism and bacterial cell membrane-disrupting mechanism, respectively. Furthermore, ADG-2e and ADL-3e showed effective synergistic effects when combined with several conventional antibiotics against methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Pseudomonas aeruginosa (MDRPA). Importantly, ADG-2e and ADL-3e not only suppressed MDRPA biofilm formation but also effectively eradicated mature MDRPA biofilms. Furthermore, ADG-2e and ADL-3e drastically decreased tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) gene expression and protein secretion in lipopolysaccharide (LPS)-stimulated macrophages, implying potent anti-inflammatory activity in LPS-induced inflammation. CONCLUSION Our findings suggest that ADG-2e and ADL-3e could be further developed as novel antimicrobial, antibiofilm, and anti-inflammatory agents to combat bacterial infections.
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Affiliation(s)
- Eun Young Kim
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - S Dinesh Kumar
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, Republic of Korea
| | - Chelladurai Ajish
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Sungtae Yang
- Department of Microbiology, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | | | - Jeongeun Kim
- Department of Chemistry, Chonnam National University, Gwangju, Republic of Korea
| | - Chul Won Lee
- Department of Chemistry, Chonnam National University, Gwangju, Republic of Korea
| | - Sung-Jin Cho
- Department of Biological Sciences and Biotechnology, College of Natural Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.
| | - Song Yub Shin
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea.
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Huang HY, Wang Q, Zhang CY, Chen ZX, Wang JT, Liao XW, Yu RJ, Xiong YS. Synthesis and biological evaluation of ruthenium complexes containing phenylseleny against Gram-positive bacterial infection by damage membrane integrity and avoid drug-resistance. J Inorg Biochem 2023; 242:112175. [PMID: 36898296 DOI: 10.1016/j.jinorgbio.2023.112175] [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: 12/20/2022] [Revised: 02/22/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023]
Abstract
Compounds modified with selenium atom as potential antibacterial agents have been exploited to combat the nondrug-resistant bacterial infection. In this study, we designed and synthesized four ruthenium complexes retouching of selenium-ether. Fortunately, those four ruthenium complexes shown excellent antibacterial bioactive (MIC: 1.56-6.25 μg/mL) against Staphylococcus aureus (S. aureus), and the most active complex Ru(II)-4 could kill S. aureus by targeting the membrane integrity and avoid the bacteria to evolve drug resistance. Moreover, Ru(II)-4 was found to significantly inhibit the formation of biofilms and biofilm eradicate capacity. In toxicity experiments, Ru(II)-4 exhibited poor hemolysis and low mammalian toxicity. To illustrate the antibacterial mechanism: we conducted scanning electron microscope (SEM), fluorescent staining, membrane rupture and DNA leakage assays. Those results demonstrated that Ru(II)-4 could destroy the integrity of bacterial cell membrane. Furthermore, both G. mellonella wax worms infection model and mouse skin infection model were established to evaluate the antibacterial activity of Ru(II)-4 in vivo, the results indicated that Ru(II)-4 was a potential candidate for combating S. aureus infections, and almost non-toxic to mouse tissue. Thus, all the results indicated that introducing selenium-atom into ruthenium compounds were a promising strategy for developing interesting antibacterial agents.
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Affiliation(s)
- Hai-Yan Huang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Qian Wang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201500, China
| | - Chun-Yan Zhang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Zi-Xiang Chen
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Jin-Tao Wang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Xiang-Wen Liao
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Ru-Jian Yu
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Yan-Shi Xiong
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
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Zhou XM, Hu YY, Fang B, Zhou CH. Benzenesulfonyl thiazoloimines as unique multitargeting antibacterial agents towards Enterococcus faecalis. Eur J Med Chem 2023; 248:115088. [PMID: 36623329 DOI: 10.1016/j.ejmech.2023.115088] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/26/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023]
Abstract
New efficient antimicrobial agents are urgently needed to combat invasive multidrug-resistant pathogens infections. Structurally unique benzenesulfonyl thiazoloimines (BSTIs) were exploited as novel potential antibacterial victors to confront terrific drug resistance. Some developed BSTIs exerted effectively antimicrobial efficacy against the tested strains. Notably, 2-pyridyl BSTI 14d exhibited good antibacterial activity against E. faecalis with MIC value of 1 μg/mL, which was superior to sulfathiazole and norfloxacin. The most active compound 14d not only showed rapid bactericidal properties and impeded E. faecalis biofilm formation to effectually relieve the development of drug resistance, but also performed low toxicity toward human red blood cells, human normal squamous epithelial cells and human non-neoplastic colon epithelial cells. Mechanistic investigation demonstrated that molecule 14d could exert efficient membrane destruction leading to the leakage of intracellular materials and metabolism inhibition, cause oxidative damage of E. faecalis through accumulation of excess reactive oxygen species and reduction of glutathione activity, and intercalate into DNA to hinder replication of DNA. Molecular docking indicated that the formation of 14d-dihydrofolate synthetase supramolecular complex could hinder the function of this enzyme. ADME analysis displayed that compound 14d possessed promising pharmacokinetic properties. These findings suggested that the newly developed benzenesulfonyl thiazoloimines with multitargeting antibacterial potential provided a new possibility for evading resistance.
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Affiliation(s)
- Xue-Mei Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yuan-Yuan Hu
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Bo Fang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine, Chongqing University of Arts and Sciences, Chongqing, 402160, PR China.
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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da Silva L, Donato IA, Gonçalves CAC, Scherf JR, dos Santos HS, Mori E, Coutinho HDM, da Cunha FAB. Antibacterial potential of chalcones and its derivatives against Staphylococcus aureus. 3 Biotech 2023; 13:1. [PMID: 36466769 PMCID: PMC9712905 DOI: 10.1007/s13205-022-03398-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/12/2022] [Indexed: 12/02/2022] Open
Abstract
Chalcones are natural substances found in the metabolism of several botanical families. Their structure consists of 1,3-diphenyl-2-propen-1-one and they are characterized by having in their chains an α, β-unsaturated carbonyl system, two phenol rings and a three-carbon chain that unites them. In plants, Chalcones are mainly involved in the biosynthesis of flavonoids and isoflavonoids through the phenylalanine derivation. This group of substances has been shown to be a viable alternative for the investigation of its antibacterial potential, considering the numerous biological activities reported and the increase of the microbial resistance that concern global health agencies. Staphylococcus aureus is a bacterium that has stood out for its ability to adapt and develop resistance to a wide variety of drugs. This literature review aimed to highlight recent advances in the use of Chalcones and derivatives as antibacterial agents against S. aureus, focusing on research articles available on the Science Direct, Pub Med and Scopus data platforms in the period 2015-2021. It was constructed informative tables that provided an overview of which types of Chalcones are being studied more (Natural or Synthetic); its chemical name and main Synthesis Methodology. From the analysis of the data, it was observed that the compounds based on Chalcones have great potential in medicinal chemistry as antibacterial agents and that the molecular skeletons of these compounds as well as their derivatives can be easily obtained through substitutions in the A and B rings of Chalcones, in order to obtain the desired bioactivity. It was verified that Chalcones and derivatives are promising agents for combating the multidrug resistance of S. aureus to drugs. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03398-7.
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Affiliation(s)
- Larissa da Silva
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, CE Brazil
| | - Isydorio Alves Donato
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, CE Brazil
| | | | - Jackelyne Roberta Scherf
- Graduate Program in Pharmaceutical Sciences, Federal University of Pernambuco, UFPE, Recife, PE Brazil
| | - Hélcio Silva dos Santos
- Laboratory of Chemistry of Natural and Synthetic Product, State university of Ceará, UECE, Fortaleza, CE Brazil
| | - Edna Mori
- CECAPE, College of Dentistry, Juazeiro do Norte, CE 63024-015 Brazil
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Fawad Ansari M, Tan YM, Sun H, Li S, Zhou CH. Unique iminotetrahydroberberine-corbelled metronidazoles as potential membrane active broad-spectrum antibacterial agents. Bioorg Med Chem Lett 2022; 76:129012. [DOI: 10.1016/j.bmcl.2022.129012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/14/2022] [Accepted: 09/26/2022] [Indexed: 12/21/2022]
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Svenson J, Molchanova N, Schroeder CI. Antimicrobial Peptide Mimics for Clinical Use: Does Size Matter? Front Immunol 2022; 13:915368. [PMID: 35720375 PMCID: PMC9204644 DOI: 10.3389/fimmu.2022.915368] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
The search for efficient antimicrobial therapies that can alleviate suffering caused by infections from resistant bacteria is more urgent than ever before. Infections caused by multi-resistant pathogens represent a significant and increasing burden to healthcare and society and researcher are investigating new classes of bioactive compounds to slow down this development. Antimicrobial peptides from the innate immune system represent one promising class that offers a potential solution to the antibiotic resistance problem due to their mode of action on the microbial membranes. However, challenges associated with pharmacokinetics, bioavailability and off-target toxicity are slowing down the advancement and use of innate defensive peptides. Improving the therapeutic properties of these peptides is a strategy for reducing the clinical limitations and synthetic mimics of antimicrobial peptides are emerging as a promising class of molecules for a variety of antimicrobial applications. These compounds can be made significantly shorter while maintaining, or even improving antimicrobial properties, and several downsized synthetic mimics are now in clinical development for a range of infectious diseases. A variety of strategies can be employed to prepare these small compounds and this review describes the different compounds developed to date by adhering to a minimum pharmacophore based on an amphiphilic balance between cationic charge and hydrophobicity. These compounds can be made as small as dipeptides, circumventing the need for large compounds with elaborate three-dimensional structures to generate simplified and potent antimicrobial mimics for a range of medical applications. This review highlight key and recent development in the field of small antimicrobial peptide mimics as a promising class of antimicrobials, illustrating just how small you can go.
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Affiliation(s)
| | - Natalia Molchanova
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Christina I. Schroeder
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, United States
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8
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Li Petri G, Di Martino S, De Rosa M. Peptidomimetics: An Overview of Recent Medicinal Chemistry Efforts toward the Discovery of Novel Small Molecule Inhibitors. J Med Chem 2022; 65:7438-7475. [PMID: 35604326 DOI: 10.1021/acs.jmedchem.2c00123] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The use of peptides as therapeutics has often been associated with several drawbacks such as poor absorption, low stability to proteolytic digestion, and fast clearance. Peptidomimetics are developed by modifications of native peptides with the aim of obtaining molecules that are more suitable for clinical development and, for this reason, are widely used as tools in medicinal chemistry programs. The effort to disclose innovative peptidomimetic therapies is recurrent and constantly evolving as demonstrated by the new lead compounds in clinical trials. Synthetic strategies for the development of peptidomimetics have also been implemented with time. This perspective highlights some of the most recent efforts for the design and synthesis of peptidomimetic agents together with their biological evaluation toward a panel of targets.
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Affiliation(s)
| | | | - Maria De Rosa
- Drug Discovery Unit, Ri.MED Foundation, Palermo 90133, Italy
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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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Yu TT, Kuppusamy R, Yasir M, Hassan MM, Sara M, Ho J, Willcox MDP, Black DS, Kumar N. Polyphenylglyoxamide-Based Amphiphilic Small Molecular Peptidomimetics as Antibacterial Agents with Anti-Biofilm Activity. Int J Mol Sci 2021; 22:7344. [PMID: 34298964 PMCID: PMC8303886 DOI: 10.3390/ijms22147344] [Citation(s) in RCA: 5] [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: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/04/2021] [Indexed: 01/02/2023] Open
Abstract
The rapid emergence of drug-resistant bacteria is a major global health concern. Antimicrobial peptides (AMPs) and peptidomimetics have arisen as a new class of antibacterial agents in recent years in an attempt to overcome antibiotic resistance. A library of phenylglyoxamide-based small molecular peptidomimetics was synthesised by incorporating an N-alkylsulfonyl hydrophobic group with varying alkyl chain lengths and a hydrophilic cationic group into a glyoxamide core appended to phenyl ring systems. The quaternary ammonium iodide salts 16d and 17c showed excellent minimum inhibitory concentration (MIC) of 4 and 8 μM (2.9 and 5.6 μg/mL) against Staphylococcus aureus, respectively, while the guanidinium hydrochloride salt 34a showed an MIC of 16 μM (8.5 μg/mL) against Escherichia coli. Additionally, the quaternary ammonium iodide salt 17c inhibited 70% S. aureus biofilm formation at 16 μM. It also disrupted 44% of pre-established S. aureus biofilms at 32 μM and 28% of pre-established E. coli biofilms 64 μM, respectively. A cytoplasmic membrane permeability study indicated that the synthesised peptidomimetics acted via disruption and depolarisation of membranes. Moreover, the quaternary ammonium iodide salts 16d and 17c were non-toxic against human cells at their therapeutic dosages against S. aureus.
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Affiliation(s)
- Tsz Tin Yu
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Rajesh Kuppusamy
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Muhammad Yasir
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Md. Musfizur Hassan
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Manjulatha Sara
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - Junming Ho
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Mark D. P. Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia; (M.Y.); (M.S.); (M.D.P.W.)
| | - David StC. Black
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
| | - Naresh Kumar
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia; (T.T.Y.); (R.K.); (M.M.H.); (J.H.)
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