1
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Na TU, Sander V, Davidson AJ, Lin R, Hermant YO, Hardie Boys MT, Pletzer D, Campbell G, Ferguson SA, Cook GM, Allison JR, Brimble MA, Northrop BH, Cameron AJ. Allenamides as a Powerful Tool to Incorporate Diversity: Thia-Michael Lipidation of Semisynthetic Peptides and Access to β-Keto Amides. Angew Chem Int Ed Engl 2024; 63:e202407764. [PMID: 38932510 DOI: 10.1002/anie.202407764] [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: 04/24/2024] [Revised: 06/21/2024] [Accepted: 06/26/2024] [Indexed: 06/28/2024]
Abstract
Lipopeptides are an important class of biomolecules for drug development. Compared with conventional acylation, a chemoselective lipidation strategy offers a more efficient strategy for late-stage structural derivatisation of a peptide scaffold. It provides access to chemically diverse compounds possessing intriguing and non-native moieties. Utilising an allenamide, we report the first semisynthesis of antimicrobial lipopeptides leveraging a highly efficient thia-Michael addition of chemically diverse lipophilic thiols. Using chemoenzymatically prepared polymyxin B nonapeptide (PMBN) as a model scaffold, an optimised allenamide-mediated thia-Michael addition effected rapid and near quantitative lipidation, affording vinyl sulfide-linked lipopeptide derivatives. Harnessing the utility of this new methodology, 22 lipophilic thiols of unprecedented chemical diversity were introduced to the PMBN framework. These included alkyl thiols, substituted aromatic thiols, heterocyclic thiols and those bearing additional functional groups (e.g., amines), ultimately yielding analogues with potent Gram-negative antimicrobial activity and substantially attenuated nephrotoxicity. Furthermore, we report facile routes to transform the allenamide into a β-keto amide on unprotected peptides, offering a powerful "jack-of-all-trades" synthetic intermediate to enable further peptide modification.
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Affiliation(s)
- Tae-Ung Na
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Veronika Sander
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Molecular Medicine and Pathology, The University of Auckland, 85 Park Road, Auckland, 1023, New Zealand
| | - Alan J Davidson
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Molecular Medicine and Pathology, The University of Auckland, 85 Park Road, Auckland, 1023, New Zealand
| | - Rolland Lin
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Yann O Hermant
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Madeleine T Hardie Boys
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Microbiology and Immunology, School of Medical Sciences, The University of Otago, 720 Cumberland Street, Dunedin, 9054, New Zealand
| | - Daniel Pletzer
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Microbiology and Immunology, School of Medical Sciences, The University of Otago, 720 Cumberland Street, Dunedin, 9054, New Zealand
| | - Georgia Campbell
- Department of Microbiology and Immunology, School of Medical Sciences, The University of Otago, 720 Cumberland Street, Dunedin, 9054, New Zealand
| | - Scott A Ferguson
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Microbiology and Immunology, School of Medical Sciences, The University of Otago, 720 Cumberland Street, Dunedin, 9054, New Zealand
| | - Gregory M Cook
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- Department of Microbiology and Immunology, School of Medical Sciences, The University of Otago, 720 Cumberland Street, Dunedin, 9054, New Zealand
| | - Jane R Allison
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Brian H Northrop
- Department of Chemistry, Wesleyan University, 52 Lawn Ave., Middletown, CT 06459, U.S.A
| | - Alan J Cameron
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, 1010, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
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2
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Grundmann CO, Guzman J, Vilcinskas A, Pupo MT. The insect microbiome is a vast source of bioactive small molecules. Nat Prod Rep 2024; 41:935-967. [PMID: 38411238 DOI: 10.1039/d3np00054k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Covering: September 1964 to June 2023Bacteria and fungi living in symbiosis with insects have been studied over the last sixty years and found to be important sources of bioactive natural products. Not only classic producers of secondary metabolites such as Streptomyces and other members of the phylum Actinobacteria but also numerous bacteria from the phyla Proteobacteria and Firmicutes and an impressive array of fungi (usually pathogenic) serve as the source of a structurally diverse number of small molecules with important biological activities including antimicrobial, cytotoxic, antiparasitic and specific enzyme inhibitors. The insect niche is often the exclusive provider of microbes producing unique types of biologically active compounds such as gerumycins, pederin, dinactin, and formicamycins. However, numerous insects still have not been described taxonomically, and in most cases, the study of their microbiota is completely unexplored. In this review, we present a comprehensive survey of 553 natural products produced by microorganisms isolated from insects by collating and classifying all the data according to the type of compound (rather than the insect or microbial source). The analysis of the correlations among the metadata related to insects, microbial partners, and their produced compounds provides valuable insights into the intricate dynamics between insects and their symbionts as well as the impact of their metabolites on these relationships. Herein, we focus on the chemical structure, biosynthesis, and biological activities of the most relevant compounds.
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Affiliation(s)
| | - Juan Guzman
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Andreas Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University, Giessen, Germany
| | - Mônica Tallarico Pupo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
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3
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Kyselová L, Řezanka T. Stereochemistry of aminoacylated cardiolipins and phosphatidylglycerols from bacteria. Electrophoresis 2024; 45:980-988. [PMID: 37860988 DOI: 10.1002/elps.202300165] [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: 07/26/2023] [Revised: 09/26/2023] [Accepted: 10/08/2023] [Indexed: 10/21/2023]
Abstract
Hydrophilic interaction liquid chromatography (HILIC) connected with electrospray high-resolution tandem mass spectrometry (MS) was used for the analysis of unusual amino acid (AA) substituted phosphatidylglycerols (PG) and cardiolipins (CL) in mesophilic and thermophilic bacteria. Individual peaks from the lipid class separation by HILIC were isolated and hydrolyzed to determine the absolute configuration of the aminoacyl side chain. The configuration of the aminoacyl side chain was assigned by indirect liquid chromatography (LC) enantiomer separation after the hydrolysis of the aminoacylated (aminoacyl) lipids using N-(4-nitrophenoxycarbonyl)-l-phenylalanine 2-methoxyethyl ester as chiral derivatizing agent and reversed phase LC-MS for analysis. When two chromatographic methods were combined, less common AAs, such as d-allo-Ile and d-allo-Thr, were identified. The taxonomic classification of bacteria showed that bacteria of the family Bacillaceae (Bacillus and Geobacillus) produce branched-chain AAs, that is, d-allo-Ile, d-Ile, and d-Leu. These AAs were present only in the genera Bacillus and Geobacillus and not in Alicyclobacillus acidoterrestris (family Alicyclobacillaceae). On the contrary, hydroxy AAs, that is, l- and d-Thr, and l- and d-allo-Thr, were identified as aminoacyl-PG and aminoacyl-CL in A. acidoterrestris and were not present in the genera Bacillus and Geobacillus. Therefore, the complete analysis made it possible to identify the stereochemistry of AAs in aminoacyl PGs and CLs and use this fact for chemotaxonomy.
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Affiliation(s)
- Lucie Kyselová
- Research Institute of Brewing and Malting, Prague, Czech Republic
| | - Tomáš Řezanka
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
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4
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Patel KP, Chen WT, Delbecq L, Bruner SD. Alternative Linkage Chemistries in the Chemoenzymatic Synthesis of Microviridin-Based Cyclic Peptides. Org Lett 2024; 26:1138-1142. [PMID: 38306609 DOI: 10.1021/acs.orglett.3c04045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
Engineering biosynthetic pathways to ribosomally synthesized and post-translationally modified peptides (RiPPs) offers several advantages for both in vivo and in vitro applications. Here we probe the ability of peptide cyclases to generate trimacrocycle microviridin analogs with non-native cross-links. The results demonstrate that diverse chemistries are tolerated by macrocyclases in the ATP-grasp family and allow for the construction of unique cyclic peptide architectures that retain protease inhibition activity. In addition, cocomplex structures of analogs bound to a model protease were determined, illustrating how changes in functional groups maintain peptide conformation and target binding.
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Affiliation(s)
- Krishna P Patel
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Wen-Ting Chen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Léa Delbecq
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Steven D Bruner
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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5
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Li Y, Chen S. Structure modification of an antibiotic: by engineering the fusaricidin bio-synthetase A in Paenibacillus polymyxa. Front Microbiol 2023; 14:1239958. [PMID: 37822742 PMCID: PMC10562733 DOI: 10.3389/fmicb.2023.1239958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/04/2023] [Indexed: 10/13/2023] Open
Abstract
Fusaricidin, a lipopeptide antibiotic, is specifically produced by Paenibacillus polymyxa strains, which could strongly inhibit Fusarium species fungi. Fusaricidin bio-synthetase A (FusA) is composed of six modules and is essential for synthesizing the peptide moiety of fusaricidin. In this study, we confirmed the FusA of Paenibacillus polymyxa strain WLY78 involved in producing Fusaricidin LI-F07a. We constructed six engineered strains by deletion of each module within FusA from the genome of strain WLY78. One of the engineered strains is able to produce a novel compound that exhibits better antifungal activity than that of fusaricidin LI-F07a. This new compound, known as fusaricidin [ΔAla6] LI-F07a, has a molecular weight of 858. Our findings reveal that it exhibits a remarkable 1-fold increase in antifungal activity compared to previous fusaricidin, and the fermentation yield reaches ~55 mg/L. This research holds promising implications for plant protection against infections caused by Fusarium and Botrytis pathogen infection.
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Affiliation(s)
- Yunlong Li
- Chengdu NewSun Crop Science Co. Ltd., Chengdu, China
| | - Sanfeng Chen
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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6
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Peptide Designs for Use in Caries Management: A Systematic Review. Int J Mol Sci 2023; 24:ijms24044247. [PMID: 36835657 PMCID: PMC9961499 DOI: 10.3390/ijms24044247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/03/2023] [Accepted: 02/13/2023] [Indexed: 02/23/2023] Open
Abstract
The objective of this study was to review the design methods that have been used to create peptides for use in caries management. Two independent researchers systematically reviewed many in vitro studies in which peptides were designed for use in caries management. They assessed the risk of bias in the included studies. This review identified 3592 publications, of which 62 were selected. Forty-seven studies reported 57 antimicrobial peptides. Among them, 31 studies (66%, 31/47) used the template-based design method; 9 studies (19%, 9/47) used the conjugation method; and 7 studies (15%, 7/47) used other methods, such as the synthetic combinatorial technology method, the de novo design method and cyclisation. Ten studies reported mineralising peptides. Seven of these (70%, 7/10) used the template-based design method, two (20%, 2/10) used the de novo design method, and one study (10%, 1/10) used the conjugation method. In addition, five studies developed their own peptides with antimicrobial and mineralising properties. These studies used the conjugation method. Our assessment for the risk of bias in the 62 reviewed studies showed that 44 publications (71%, 44/62) had a medium risk and that 3 publications had a low risk (5%, 3/62). The two most common methods for developing peptides for use in caries management that were used in these studies were the template-based design method and the conjugation method.
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7
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Marine Cyclic Peptides: Antimicrobial Activity and Synthetic Strategies. Mar Drugs 2022; 20:md20060397. [PMID: 35736200 PMCID: PMC9230156 DOI: 10.3390/md20060397] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 01/29/2023] Open
Abstract
Oceans are a rich source of structurally unique bioactive compounds from the perspective of potential therapeutic agents. Marine peptides are a particularly interesting group of secondary metabolites because of their chemistry and wide range of biological activities. Among them, cyclic peptides exhibit a broad spectrum of antimicrobial activities, including against bacteria, protozoa, fungi, and viruses. Moreover, there are several examples of marine cyclic peptides revealing interesting antimicrobial activities against numerous drug-resistant bacteria and fungi, making these compounds a very promising resource in the search for novel antimicrobial agents to revert multidrug-resistance. This review summarizes 174 marine cyclic peptides with antibacterial, antifungal, antiparasitic, or antiviral properties. These natural products were categorized according to their sources—sponges, mollusks, crustaceans, crabs, marine bacteria, and fungi—and chemical structure—cyclic peptides and depsipeptides. The antimicrobial activities, including against drug-resistant microorganisms, unusual structural characteristics, and hits more advanced in (pre)clinical studies, are highlighted. Nocathiacins I–III (91–93), unnarmicins A (114) and C (115), sclerotides A (160) and B (161), and plitidepsin (174) can be highlighted considering not only their high antimicrobial potency in vitro, but also for their promising in vivo results. Marine cyclic peptides are also interesting models for molecular modifications and/or total synthesis to obtain more potent compounds, with improved properties and in higher quantity. Solid-phase Fmoc- and Boc-protection chemistry is the major synthetic strategy to obtain marine cyclic peptides with antimicrobial properties, and key examples are presented guiding microbiologist and medicinal chemists to the discovery of new antimicrobial drug candidates from marine sources.
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8
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Nagano M, Huang Y, Obexer R, Suga H. Chemical peptide macrolactonization via intramolecular
S
‐to‐
S
‐to‐
O
acyl transfer. Pept Sci (Hoboken) 2022. [DOI: 10.1002/pep2.24259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masanobu Nagano
- Graduate School of Science The University of Tokyo Bunkyo‐ku Tokyo Japan
| | - Yichao Huang
- Graduate School of Science The University of Tokyo Bunkyo‐ku Tokyo Japan
| | - Richard Obexer
- Graduate School of Science The University of Tokyo Bunkyo‐ku Tokyo Japan
| | - Hiroaki Suga
- Graduate School of Science The University of Tokyo Bunkyo‐ku Tokyo Japan
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9
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Al Ayed K, Ballantine RD, Hoekstra M, Bann SJ, Wesseling CMJ, Bakker AT, Zhong Z, Li YX, Brüchle NC, van der Stelt M, Cochrane SA, Martin NI. Synthetic Studies with the Brevicidine and Laterocidine Lipopeptide Antibiotics Including Analogues with Enhanced Properties and in vivo Efficacy. Chem Sci 2022; 13:3563-3570. [PMID: 35432860 PMCID: PMC8943889 DOI: 10.1039/d2sc00143h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/09/2022] [Indexed: 12/01/2022] Open
Abstract
Brevicidine and laterocidine are two recently discovered lipopeptide antibiotics with promising antibacterial activity. Possessing a macrocyclic core, multiple positive charges, and a lipidated N-terminus, these lipopeptides exhibit potent and selective activity against Gram-negative pathogens, including polymyxin-resistant isolates. Given the low amounts of brevicidine and laterocidine accessible by fermentation of the producing microorganisms, synthetic routes to these lipopeptides present an attractive alternative. We here report the convenient solid-phase syntheses of both brevicidine and laterocidine and confirm their potent anti-Gram-negative activities. The synthetic routes developed also provide convenient access to novel structural analogues of both brevicidine and laterocidine that display improved hydrolytic stability while maintaining potent antibacterial activity in both in vitro assays and in vivo infection models. Convenient solid-phase approaches are described for the synthesis of brevicidine and laterocidine. Also reported are novel analogues including a laterocidine variant with enhanced hydrolytic stability and potent in vivo antibacterial activity.![]()
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Affiliation(s)
- Karol Al Ayed
- Biological Chemistry Group, Institute of Biology, Leiden University Sylviusweg 72 2333 BE Leiden The Netherlands
| | - Ross D Ballantine
- School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road BT9 5AG Belfast UK
| | - Michael Hoekstra
- Biological Chemistry Group, Institute of Biology, Leiden University Sylviusweg 72 2333 BE Leiden The Netherlands
| | - Samantha J Bann
- School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road BT9 5AG Belfast UK
| | - Charlotte M J Wesseling
- Biological Chemistry Group, Institute of Biology, Leiden University Sylviusweg 72 2333 BE Leiden The Netherlands
| | - Alexander T Bakker
- Molecular Physiology Group, Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Zheng Zhong
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong China
| | - Yong-Xin Li
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong China
| | - Nora C Brüchle
- Biological Chemistry Group, Institute of Biology, Leiden University Sylviusweg 72 2333 BE Leiden The Netherlands
| | - Mario van der Stelt
- Molecular Physiology Group, Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Stephen A Cochrane
- School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road BT9 5AG Belfast UK
| | - Nathaniel I Martin
- Biological Chemistry Group, Institute of Biology, Leiden University Sylviusweg 72 2333 BE Leiden The Netherlands
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10
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He T, Qu R, Zhang J. Current synthetic chemistry towards cyclic antimicrobial peptides. J Pept Sci 2021; 28:e3387. [PMID: 34931393 DOI: 10.1002/psc.3387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 11/03/2021] [Accepted: 11/23/2021] [Indexed: 12/31/2022]
Abstract
Antimicrobial peptides (AMPs) have great potentials for developing novel antibiotics against multi-drug resistant (MDR) bacteria. However, the clinical application of AMPs is limited due to their poor protease stability and high hemolytic toxicity. Various strategies have been widely explored to improve the pharmacological properties of natural or artificial antimicrobial peptides, including D- or non-natural amino acid residue replacement, backbone modification, cyclization, PEGlytion, and lipidation. Among others, peptide cyclization, which has been widely applied to enhance the biostability and target selectivity of bioactive peptide, is a very appealing and promising strategy for developing novel antibiotics based on AMPs. Herein, we summarize the current strategies for synthesizing cyclic antimicrobial peptides and the resulting influence of peptide cyclization on the biological activities.
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Affiliation(s)
- Tong He
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Rui Qu
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
| | - Jinqiang Zhang
- Innovative Drug Research Centre (IDRC), Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, China
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11
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Hernández-Aristizábal I, Ocampo-Ibáñez ID. Antimicrobial Peptides with Antibacterial Activity against Vancomycin-Resistant Staphylococcus aureus Strains: Classification, Structures, and Mechanisms of Action. Int J Mol Sci 2021; 22:7927. [PMID: 34360692 PMCID: PMC8347216 DOI: 10.3390/ijms22157927] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 12/27/2022] Open
Abstract
The emergence of bacteria resistant to conventional antibiotics is of great concern in modern medicine because it renders ineffectiveness of the current empirical antibiotic therapies. Infections caused by vancomycin-resistant Staphylococcus aureus (VRSA) and vancomycin-intermediate S. aureus (VISA) strains represent a serious threat to global health due to their considerable morbidity and mortality rates. Therefore, there is an urgent need of research and development of new antimicrobial alternatives against these bacteria. In this context, the use of antimicrobial peptides (AMPs) is considered a promising alternative therapeutic strategy to control resistant strains. Therefore, a wide number of natural, artificial, and synthetic AMPs have been evaluated against VRSA and VISA strains, with great potential for clinical application. In this regard, we aimed to present a comprehensive and systematic review of research findings on AMPs that have shown antibacterial activity against vancomycin-resistant and vancomycin-intermediate resistant strains and clinical isolates of S. aureus, discussing their classification and origin, physicochemical and structural characteristics, and possible action mechanisms. This is the first review that includes all peptides that have shown antibacterial activity against VRSA and VISA strains exclusively.
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Affiliation(s)
| | - Iván Darío Ocampo-Ibáñez
- Research Group of Microbiology, Industry and Environment, Faculty of Basic Sciences, Universidad Santiago de Cali, Cali 760035, Colombia;
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12
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Gil J, Pastar I, Houghten RA, Padhee S, Higa A, Solis M, Valdez J, Head CR, Michaels H, Lenhart B, Simms C, Williams B, Cudic P, Davis SC. Novel Cyclic Lipopeptides Fusaricidin Analogs for Treating Wound Infections. Front Microbiol 2021; 12:708904. [PMID: 34367114 PMCID: PMC8343139 DOI: 10.3389/fmicb.2021.708904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/21/2021] [Indexed: 12/01/2022] Open
Abstract
Both acute and chronic cutaneous wounds are often difficult to treat due to the high-risk for bacterial contamination. Once hospitalized, open wounds are at a high-risk for developing hospital-associated infections caused by multi drug-resistant bacteria such as Staphylococcus aureus and Pseudomonas aeruginosa. Treating these infections is challenging, not only because of antibiotic resistance, but also due to the production of biofilms. New treatment strategies are needed that will help in both stimulating the wound healing process, as well as preventing and eliminating bacterial wound infections. Fusaricidins are naturally occurring cyclic lipopeptides with antimicrobial properties that have shown to be effective against a variety of fungi and Gram-positive bacteria, with low toxicity. Continuing with our efforts toward the identification of novel cyclic lipopeptides Fusaricidin analogs, herein we report the synthesis and evaluation of the antimicrobial activity for two novel cyclic lipopeptides (CLP), CLP 2605-4 and CLP 2612-8.1 against methicillin resistant S. aureus and P. aeruginosa, respectively, in in vivo porcine full thickness wound model. Both CLPs were able to reduce bacterial counts by approximately 3 log CFU/g by the last assessment day. Peptide 2612-8.1 slightly enhanced the wound healing, however, wounds treated with peptide 2605-4, have shown higher levels of inflammation and impaired wound healing process. This study highlights the importance of identifying new antimicrobials that can combat bacterial infection while not impeding tissue repair.
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Affiliation(s)
- Joel Gil
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Irena Pastar
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | | | - Shruti Padhee
- Torrey Pines Institute for Molecular Studies, San Diego, CA, United States
| | - Alexander Higa
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Michael Solis
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Jose Valdez
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Cheyanne R. Head
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Heather Michaels
- Torrey Pines Institute for Molecular Studies, San Diego, CA, United States
| | - Brian Lenhart
- Torrey Pines Institute for Molecular Studies, San Diego, CA, United States
| | - Colin Simms
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Brandon Williams
- Department of Chemistry and Biochemistry Charles E. Schmidt College of Science, Florida Atlantic University, Boca Raton, FL, United States
| | - Predrag Cudic
- Department of Chemistry and Biochemistry Charles E. Schmidt College of Science, Florida Atlantic University, Boca Raton, FL, United States
| | - Stephen C. Davis
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Coral Gables, FL, United States
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13
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Gimenez D, Phelan A, Murphy CD, Cobb SL. Fengycin A Analogues with Enhanced Chemical Stability and Antifungal Properties. Org Lett 2021; 23:4672-4676. [PMID: 34077216 PMCID: PMC8289291 DOI: 10.1021/acs.orglett.1c01387] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
![]()
Fengycins
are cyclic lipo-depsipeptides
produced by Bacillus spp. that display potent antifungal
properties but are chemically unstable. This instability has meant
that no total synthesis of any fengycin has been published. Here we
report the synthesis of fengycin A analogues that display enhanced
antifungal properties and chemical stability under both basic and
acidic conditions. The analogues prepared also demonstrate that the
fengycin core structure can be modified and simplified without the
loss of antifungal activity.
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Affiliation(s)
- Diana Gimenez
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - Aoife Phelan
- School of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cormac D Murphy
- School of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Steven L Cobb
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom
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14
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Hua B, Feng H, Han J, Qiao Z, Wang X, Zhang Q, Liu Z, Wu Z. Isolation and Characterization of a New Fusaricidin-Type Antibiotic Produced by Paenibacillus bovis sp. nov BD3526. Curr Microbiol 2020; 77:3990-3999. [PMID: 33044619 DOI: 10.1007/s00284-020-02206-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 09/09/2020] [Indexed: 10/23/2022]
Abstract
Paenibacillus bovis sp. nov BD3526, isolated from raw yak (Bos grunniens) milk, was able to produce antibacterial substances against Micrococcus luteus. The antibacterial substances produced by the strain BD3526 in 3% (w/v) wheat bran broth under aerobic conditions were precipitated from the cultivated broth with ammonium sulfate at 60% saturation. Two antibacterial compounds were obtained by Sephadex LH-20 chromatography and semi-preparative reverse-phase high-performance liquid chromatography (Semi-Pre RP-HPLC). The chemical structures of the two antibacterial compounds were further elucidated by means of ultra high-performance liquid chromatography-mass spectrometer/mass spectrometer (UHPLC-MS/MS). One compound, with a molecular mass of 883.56195 Da (M + H)+, was determined to be identical in chemical structure with that of the well-known compound fusaricidin A. The other antimicrobial compound with a molecular mass of 911.59393 Da (M + H)+ was determined to be a derivative of fusaricidin A by tandem mass spectrometry and amino acid composition analysis and was designed as bovisin. Bovisin possessed the stability against acid/alkali, heat and some proteases treatment, the same with the fusaricidin A. However, the minimal inhibition concentration (MIC) of bovisin on the tested indicator including Staphylococcus aureus, Micrococcus luteus, Listeria monocytogenes and Bacillus subtilis were 50, 50, 50, 50 μg/mL, respectively, slightly higher than those of fusaricidin A (6.25, 6.25, 6.25, 12.5 μg/mL), indicating bovisin with a weaker inhibitory activity.
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Affiliation(s)
- Bangqing Hua
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China
| | - Huafeng Feng
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China
| | - Jin Han
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China
| | - Zhenyi Qiao
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China
| | - Xiaohua Wang
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China
| | - Qiuxiang Zhang
- Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zhenmin Liu
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China.,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China.,Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zhengjun Wu
- State Key Laboratory of Dairy Biotechnology, Technology Center and Dairy Research Institute of Bright Dairy & Food Co. Ltd., Shanghai, 200436, People's Republic of China. .,Shanghai Engineering Research Center of Dairy Biotechnology, Shanghai, 200436, People's Republic of China.
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15
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Levin A, Hakala TA, Schnaider L, Bernardes GJL, Gazit E, Knowles TPJ. Biomimetic peptide self-assembly for functional materials. Nat Rev Chem 2020. [DOI: 10.1038/s41570-020-0215-y] [Citation(s) in RCA: 162] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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16
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De Vleeschouwer M, Van Kersavond T, Verleysen Y, Sinnaeve D, Coenye T, Martins JC, Madder A. Identification of the Molecular Determinants Involved in Antimicrobial Activity of Pseudodesmin A, a Cyclic Lipopeptide From the Viscosin Group. Front Microbiol 2020; 11:646. [PMID: 32373092 PMCID: PMC7187754 DOI: 10.3389/fmicb.2020.00646] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 03/20/2020] [Indexed: 12/24/2022] Open
Abstract
Cyclic lipo(depsi)peptides (CLiPs) from Pseudomonas constitute a class of natural products involved in a broad range of biological functions for their producers. They also display interesting antimicrobial potential including activity against Gram-positive bacteria. Literature has indicated that these compounds can induce membrane permeabilization, possibly through pore-formation, leading to the general view that the cellular membrane constitutes the primary target in their mode of action. In support of this view, we previously demonstrated that the enantiomer of pseudodesmin A, a member of the viscosin group of CLiPs, shows identical activity against a test panel of six Gram-positive bacterial strains. Here, a previously developed total organic synthesis route is used and partly adapted to generate 20 novel pseudodesmin A analogs in an effort to derive links between molecular constitution, structure and activity. From these, the importance of a macrocycle closed by an ester bond as well as a critical length of β-OH fatty acid chain capping the N-terminus is conclusively demonstrated, providing further evidence for the importance of peptide-membrane interactions in the mode of action. Moreover, an alanine scan is used to unearth the contribution of specific amino acid residues to biological activity. Subsequent interpretation in terms of a structural model describing the location and orientation of pseudodesmin A in a membrane environment, allows first insight in the peptide-membrane interactions involved. The biological screening also identified residue positions that appear less sensitive to conservative modifications, allowing the introduction of a non-perturbing tryptophan residue which will pave the way toward biophysical studies using fluorescence spectroscopy.
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Affiliation(s)
- Matthias De Vleeschouwer
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium.,NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Tim Van Kersavond
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium.,NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Yentl Verleysen
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium.,NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Davy Sinnaeve
- NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Department of Pharmaceutical Analysis, Ghent University, Ghent, Belgium
| | - José C Martins
- NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
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17
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Achieving Maximal Production of Fusaricidins from Paenibacillus kribbensis CU01 via Continuous Fermentation. Appl Biochem Biotechnol 2019; 190:712-720. [DOI: 10.1007/s12010-019-03121-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/25/2019] [Indexed: 10/26/2022]
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18
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Ravichandiran P, Masłyk M, Sheet S, Janeczko M, Premnath D, Kim AR, Park B, Han M, Yoo DJ. Synthesis and Antimicrobial Evaluation of 1,4-Naphthoquinone Derivatives as Potential Antibacterial Agents. ChemistryOpen 2019; 8:589-600. [PMID: 31098338 PMCID: PMC6507621 DOI: 10.1002/open.201900077] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/18/2019] [Indexed: 12/16/2022] Open
Abstract
1,4-Naphthoquinones are an important class of compounds present in a number of natural products. In this study, a new series of 1,4-naphthoquinone derivatives were synthesized. All the synthesized compounds were tested for in vitro antimicrobial activity. In this present investigation, two Gram-positive and five Gram-negative bacterial strains and one pathogenic yeast strain were used to determine the antibacterial activity. Naphthoquinones tested for its antibacterial potencies, among seven of them displayed better antimicrobial activity against Staphylococcus aureus (S. aureus; 30-70 μg/mL). Some of the tested compounds showed moderate to low antimicrobial activity against Pseudomonas aeruginosa (P. aeruginosa) and Salmonella bongori (S. bongori; 70-150 μg/mL). In addition, most active compounds against S. aureus were evaluated for toxicity to human blood cells using a hemolysis assay. For better understanding, reactive oxygen species (ROS) generation, time-kill kinetic study, and apoptosis, necrosis responses were investigated for three representative compounds.
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Affiliation(s)
- Palanisamy Ravichandiran
- Department of Life Science, Department of Energy Storage/Conversion Engineering of Graduate School, and Hydrogen and Fuel Cell Research CenterChonbuk National University, Jeollabuk-do54896Republic of Korea
| | - Maciej Masłyk
- Department of Molecular Biology, Faculty of Biotechnology and Environmental SciencesThe John Paul II Catholic University of Lublinul. Konstantynów 1i20-708LublinPoland
| | - Sunirmal Sheet
- Department of Forest Science and Technology, College of Agriculture and Life SciencesChonbuk National University, 567 Baekje-daero, Deokjin-guJeonju-si561-756, Jeollabuk-doRepublic of Korea
| | - Monika Janeczko
- Department of Molecular Biology, Faculty of Biotechnology and Environmental SciencesThe John Paul II Catholic University of Lublinul. Konstantynów 1i20-708LublinPoland
| | - Dhanraj Premnath
- Department of BiotechnologyKarunya Institute of Technology and ScienceSchool of Agriculture and Biosciences, Karunya NagarCoimbatore641114, Tamil NaduIndia
| | - Ae Rhan Kim
- R&D Center for CANUTECH, Business Incubation Center, Department of Bioenvironmental ChemistryChonbuk National University, Jeollabuk-do54896Republic of Korea.
| | - Byung‐Hyun Park
- Department of BiochemistryChonbuk National University Medical School, Jeollabuk-do54896Republic of Korea
| | - Myung‐Kwan Han
- Department of MicrobiologyChonbuk National University Medical School, Jeollabuk-do54896Republic of Korea
| | - Dong Jin Yoo
- Department of Life Science, Department of Energy Storage/Conversion Engineering of Graduate School, and Hydrogen and Fuel Cell Research CenterChonbuk National University, Jeollabuk-do54896Republic of Korea
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19
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Identification of fusaricidins from the antifungal microbial strain Paenibacillus sp. MS2379 using ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry. J Chromatogr A 2018; 1586:91-100. [PMID: 30558848 DOI: 10.1016/j.chroma.2018.12.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/20/2018] [Accepted: 12/04/2018] [Indexed: 11/21/2022]
Abstract
Paenibacillus sp. MS2379 is a highly efficient microbial strain producing fusaricidins, a class of lipopeptides that have demonstrated strong antifungal activities against a broad array of fungal pathogens. An integrated approach combining chromatographic fractionation, UHPLC-QTOF-MS analysis, and NMR spectroscopic interpretation was employed to characterize antifungal metabolites produced by this microbial strain, resulting in the identification of 48 fusaricidins including 30 cyclic and 18 open-chain species. In this regard, UHPLC-QTOF-MS played a vital role in determining structures of 28 new fusaricidins through peptide fragment analysis. The structural determination of the new fusaricidins by the high-resolution mass spectrometry was validated by follow-up isolation and NMR spectroscopic analysis of representative compounds. It is worth noting that novel fusaricidins with amino acid residues of serine and γ-aminobutyric acid were identified, which is of great biosynthetic significance for this biologically important class of compounds. The present study again illustrates the power of UHPLC-QTOF-MS for structural identification of lipopeptides, and the structural diversity of the identified fusaricidins makes this microbial strain unique as a potential biocontrol agent.
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20
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Asfaw H, Wetzlar T, Martinez-Martinez MS, Imming P. An efficient synthetic route for preparation of antimycobacterial wollamides and evaluation of their in vitro and in vivo efficacy. Bioorg Med Chem Lett 2018; 28:2899-2905. [PMID: 30031620 DOI: 10.1016/j.bmcl.2018.07.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/18/2018] [Accepted: 07/11/2018] [Indexed: 12/30/2022]
Abstract
A convenient solid phase peptide synthetic (SPPS) route is reported for the preparation of antimycobacterial wollamides. The method is based on on-resin head-to-tail cyclization and is fast, efficient and amenable to automation. The in vitro antimycobacterial activities of the newly synthesized wollamides were evaluated against M. tuberculosis H37Rv (Mtb H37Rv). To assess their drug-likeness, in vitro pharmacokinetic (ADME) profiling was also performed. For wollamides with potent extracellular potency, intracellular activities and in vivo efficacy were determined. The results disclose the potent antimycobacterial (MICMtb H37Rv = 1.1 µM) and suitable drug-like properties of wollamide A (4b). Out of the synthesized wollamides, four compounds (4b-e) exhibited potent intracellular activities against Mtb H37Rv infected human macrophages (IC50 = 0.2-1.3 µM). Results of in vivo blood exposure and efficacy assays for 4d and 4e are discussed.
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Affiliation(s)
- Henok Asfaw
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany
| | - Thomas Wetzlar
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany
| | | | - Peter Imming
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany.
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21
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The antibacterial activity of LI-F type peptide against methicillin-resistant Staphylococcus aureus (MRSA) in vitro and inhibition of infections in murine scalded epidermis. Appl Microbiol Biotechnol 2018; 102:2301-2311. [DOI: 10.1007/s00253-017-8669-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/14/2017] [Accepted: 11/15/2017] [Indexed: 01/10/2023]
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22
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Han J, Zhao S, Ma Z, Gao L, Liu H, Muhammad U, Lu Z, Lv F, Bie X. The antibacterial activity and modes of LI-F type antimicrobial peptides against Bacillus cereus in vitro. J Appl Microbiol 2018. [PMID: 28650559 DOI: 10.1111/jam.13526] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AIMS LI-Fs are a family of highly potent cyclic lipodepsipeptide antibiotics with a broad antimicrobial spectrum (Gram-positive bacteria and fungi). In this study, LI-F-type antimicrobial peptides (AMP-jsa9) composing of LI-F03a, LI-F03b, LI-F04a, LI-F04b and LI-F05b were isolated from Paenibacillus polymyxa JSA-9. To better understand the antimicrobial mechanism of AMP-jsa9, the potency and action(s) of AMP-jsa9 against Bacillus cereus were examined. METHODS AND RESULTS Flow cytometry, confocal laser microscopy, scanning electron microscopy, transmission electron microscopy (TEM) and atomic force microscopy observation, as well as determination of peptidoglycan and cell wall-associated protein and other methods were used. The results indicate that AMP-jsa9 exhibits strong, broad-spectrum antimicrobial activity. Moreover, AMP-jsa9 targets the cell wall and membrane of B. cereus to impair membrane integrity, increase membrane permeability and enhance cytoplasm leakage (e.g. K+ , protein, nucleic acid). This leads to bacterial cells with irregular, withered and coarse surfaces. In addition, AMP-jsa9 is also able to bind to DNA and break down B. cereus biofilms. CONCLUSIONS In this study, the action mechanism of LI-Fs against B. cereus was clarified in details. SIGNIFICANCE AND IMPACT OF THE STUDY The results of this study provide a theoretical basis for utilizing AMP-jsa9 or similar analogues as natural and effective preservatives in the food and feed industries. These efforts could also stimulate research activities interested in understanding the specific effects of other antimicrobial agents.
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Affiliation(s)
- J Han
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - S Zhao
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - Z Ma
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - L Gao
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - H Liu
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - U Muhammad
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - Z Lu
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - F Lv
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
| | - X Bie
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Ministry of Agriculture of China, Nanjing, China
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23
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Mikkola R, Andersson MA, Grigoriev P, Heinonen M, Salkinoja-Salonen MS. The toxic mode of action of cyclic lipodepsipeptide fusaricidins, produced by Paenibacillus polymyxa, toward mammalian cells. J Appl Microbiol 2017; 123:436-449. [PMID: 28557348 DOI: 10.1111/jam.13498] [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: 02/17/2017] [Revised: 04/28/2017] [Accepted: 05/23/2017] [Indexed: 01/09/2023]
Abstract
AIMS Toxigenic strains of Paenibacillus polymyxa were isolated from buildings connected with the symptoms of ill health. Our aim was to identify the toxic compounds of Paenibacillus polymyxa and to describe their toxic actions. METHODS AND RESULTS The toxins of Paenibacillus polymyxa were purified and analysed by HPLC and mass spectrometry. Toxic fusaricidins A and B, and LI-F05a with mass ions at m/z 883·7, 897·6 and 897·6, respectively, were found. The cytotoxicity of purified fusaricidins A and B was measured using boar sperm, porcine tubular kidney epithelial cells and murine fibroblasts. The ion channel forming properties of fusaricidins were studied using the black lipid membrane (BLM) technique. Fusaricidins A and B depolarized the mitochondria of boar sperm, porcine tubular kidney epithelial cells and murine fibroblasts at concentrations of 0·5-1 μg ml-1 and caused nuclear fragmentation and induced apoptosis at concentrations of 2·5-5 μg ml-1 . Furthermore, fusaricidins A and B induced K+ permeating single channels. CONCLUSIONS It was concluded that fusaricidins were toxic to mitochondria and induced apoptosis in mammalian cells. It was proposed that the observed toxicity of fusaricidins is due their ion channel forming properties. SIGNIFICANCE AND IMPACT OF THE STUDY This paper revealed, for the first time, the mode of action of Paenibacillus polymyxa fusaricidins toxins towards mammalian cells. Fusaricidins, due to their potassium ionophoricity and mitochondria depolarizing impacts, may have contributed to the health damage observed at sites where the producer strains were isolated at high density.
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Affiliation(s)
- R Mikkola
- Department of Civil Engineering, School of Engineering, Aalto University, Aalto, Finland
| | - M A Andersson
- Department of Civil Engineering, School of Engineering, Aalto University, Aalto, Finland.,Department of Food and Environmental Science, University of Helsinki, Helsinki, Finland
| | - P Grigoriev
- Department of Food and Environmental Science, University of Helsinki, Helsinki, Finland.,Institute of Biophysics of Cell, Russian Academy of Science, Pushchino, Moscow Region, Russia
| | - M Heinonen
- Department of Production Animal Medicine, University of Helsinki, Helsinki, Finland
| | - M S Salkinoja-Salonen
- Department of Food and Environmental Science, University of Helsinki, Helsinki, Finland
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24
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Li Y, Lavey NP, Coker JA, Knobbe JE, Truong DC, Yu H, Lin YS, Nimmo SL, Duerfeldt AS. Consequences of Depsipeptide Substitution on the ClpP Activation Activity of Antibacterial Acyldepsipeptides. ACS Med Chem Lett 2017; 8:1171-1176. [PMID: 29152050 DOI: 10.1021/acsmedchemlett.7b00320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/19/2017] [Indexed: 11/30/2022] Open
Abstract
The acyldepsipeptide (ADEP) antibiotics operate through a clinically unexploited mechanism of action and thus have attracted attention from several antibacterial development groups. The ADEP scaffold is synthetically tractable, and deep-seated modifications have produced extremely potent antibacterial leads against Gram-positive pathogens. Although newly identified ADEP analogs demonstrate remarkable antibacterial activity against bacterial isolates and in mouse models of bacterial infections, stability issues pertaining to the depsipeptide core remain. To date, no study has been reported on the natural ADEP scaffold that evaluates the sole importance of the macrocyclic linkage on target engagement, molecular conformation, and bioactivity. To address this gap in ADEP structure-activity relationships, we synthesized three ADEP analogs that only differ in the linkage motif (i.e., ester, amide, and N-methyl amide) and provide a side-by-side comparison of conformational behavior and biological activity. We demonstrate that while replacement of the naturally occurring ester linkage with a secondary amide maintains in vitro biochemical activity, this simple substitution results in a significant drop in whole-cell activity. This study provides direct evidence that ester to amide linkage substitution is unlikely to provide a reasonable solution for ADEP instability.
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Affiliation(s)
| | | | | | | | | | - Hongtao Yu
- Department
of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Yu-Shan Lin
- Department
of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
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25
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Preclinical Assessment of a 68Ga-DOTA-Functionalized Depsipeptide as a Radiodiagnostic Infection Imaging Agent. Molecules 2017; 22:molecules22091403. [PMID: 28837117 PMCID: PMC6151697 DOI: 10.3390/molecules22091403] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/18/2017] [Indexed: 11/16/2022] Open
Abstract
The study assessed a radiolabeled depsipeptide conjugate (68Ga-DOTA-TBIA101) for its potential as an imaging agent targeting infection or infection-associated inflammation. 68Ga-labeled DOTA-TBIA101 imaging was performed in (NZR1) healthy rabbits; (NZR2) rabbits bearing muscular sterile inflammation and Staphylococcus aureus (SA) infection; and (NZR3) rabbits infected with Mycobacterium tuberculosis (MTB) combined with a subcutaneous scruff infection of SA in the same animal. All animals were imaged using a PET/CT scanner at 5 and 60 min post injection. Images showed elevated accumulation of 68Ga-DOTA-TBIA101 in the sterile muscular inflammation site (T/NT ratio = 2.6 ± 0.37 (5 min) and 2.8 ± 2.3 (60 min)) and muscles infected with MTB (T/NT ratio = 2.6 ± 0.35 (5 min) and 2.8 ± 0.16 (60 min)). The findings suggest that 68Ga-DOTA-TBIA101-PET/CT may detect MTB-associated inflammation, although more foundational studies need to be performed to rationalize the diagnostic value of this technique.
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26
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Min KR, Galvis A, Williams B, Rayala R, Cudic P, Ajdic D. Antibacterial and Antibiofilm Activities of a Novel Synthetic Cyclic Lipopeptide against Cariogenic Streptococcus mutans UA159. Antimicrob Agents Chemother 2017; 61:e00776-17. [PMID: 28533236 PMCID: PMC5527655 DOI: 10.1128/aac.00776-17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 05/13/2017] [Indexed: 02/02/2023] Open
Abstract
Despite continuous efforts to control cariogenic dental biofilms, very few effective antimicrobial treatments exist. In this study, we characterized the activity of the novel synthetic cyclic lipopeptide 4 (CLP-4), derived from fusaricidin, against the cariogenic pathogen Streptococcus mutans UA159. We determined CLP-4's MIC, minimum bactericidal concentration (MBC), and spontaneous resistance frequency, and we performed time-kill assays. Additionally, we assessed CLP-4's potential to inhibit biofilm formation and eradicate preformed biofilms. Our results demonstrate that CLP-4 has strong antibacterial activity in vitro and is a potent bactericidal agent with low spontaneous resistance frequency. At a low concentration of 5 μg/ml, CLP-4 completely inhibited S. mutans UA159 biofilm formation, and at 50 μg/ml, it reduced the viability of established biofilms by >99.99%. We also assessed CLP-4's cytotoxicity and stability against proteolytic digestion. CLP-4 withstood trypsin or chymotrypsin digestion even after treatment for 24 h, and our toxicity studies showed that CLP-4 effective concentrations had negligible effects on hemolysis and the viability of human oral fibroblasts. In summary, our findings showed that CLP-4 is a potent antibacterial and antibiofilm agent with remarkable stability and low nonspecific cytotoxicity. Hence, CLP-4 is a promising novel antimicrobial peptide with potential for clinical application in the prevention and treatment of dental caries.
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Affiliation(s)
- Kyung R Min
- Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Adriana Galvis
- Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Brandon Williams
- Department of Chemistry and Biochemistry, Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, Florida, USA
| | - Ramanjaneyulu Rayala
- Department of Chemistry and Biochemistry, Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, Florida, USA
| | - Predrag Cudic
- Department of Chemistry and Biochemistry, Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, Florida, USA
| | - Dragana Ajdic
- Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
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27
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Reimann M, Sandjo LP, Antelo L, Thines E, Siepe I, Opatz T. A new member of the fusaricidin family - structure elucidation and synthesis of fusaricidin E. Beilstein J Org Chem 2017; 13:1430-1438. [PMID: 28781709 PMCID: PMC5530608 DOI: 10.3762/bjoc.13.140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/07/2017] [Indexed: 11/23/2022] Open
Abstract
Two hitherto unknown fusaricidins were obtained from fermentation broths of three Paenibacillus strains. After structure elucidation based on tandem mass spectrometry and NMR spectroscopy, fusaricidin E was synthesized to confirm the structure and the suggested stereochemistry. The synthesis was based on a new strategy which includes an efficient access to the 15-guanidino-3-hydroxypentadecanoyl (GHPD) side chain from erucamide.
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Affiliation(s)
- Marcel Reimann
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10–14, 55128 Mainz, Germany
| | - Louis P Sandjo
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10–14, 55128 Mainz, Germany
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Bloco J/K, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil
| | - Luis Antelo
- Institute of Biotechnology and Drug Research, Erwin Schrödinger-Str. 56, 66776 Kaiserslautern, Germany
| | - Eckhard Thines
- Institute of Biotechnology and Drug Research, Erwin Schrödinger-Str. 56, 66776 Kaiserslautern, Germany
- Institute of Molecular Physiology, Microbiology and Wine Research, Johannes Gutenberg University Mainz, Johann-Joachim-Becher-Weg 15, 55128 Mainz, Germany
| | | | - Till Opatz
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10–14, 55128 Mainz, Germany
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28
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Ryu J, Kim JM, Lee CW, Kim SW. Structural analysis and enhanced production of fusaricidin fromPaenibacillus kribbensisCU01 isolated from yellow loess. J Basic Microbiol 2017; 57:525-535. [DOI: 10.1002/jobm.201600692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/08/2017] [Accepted: 02/12/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Jaewon Ryu
- Department of Energy Convergence; Chosun University; Gwangju Republic of Korea
| | - Jong M. Kim
- Department of Energy Convergence; Chosun University; Gwangju Republic of Korea
| | - Chul W. Lee
- Department of Chemistry; Chonnam National University; Gwangju Republic of Korea
| | - Si W. Kim
- Department of Energy Convergence; Chosun University; Gwangju Republic of Korea
- Department of Environmental Engineering; Chosun University; Gwangju Republic of Korea
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29
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De Vleeschouwer M, Sinnaeve D, Matthijs N, Coenye T, Madder A, Martins JC. Synthesis of N-Methylated Pseudodesmin A Analogues: on the Structural Importance of N-H Hydrogen Bonds. ChemistrySelect 2017. [DOI: 10.1002/slct.201601791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Matthias De Vleeschouwer
- Organic and Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Davy Sinnaeve
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Nele Matthijs
- Laboratory of Pharmaceutical Microbiology; Ghent University; Ottergemsesteenweg 460 9000 Ghent
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology; Ghent University; Ottergemsesteenweg 460 9000 Ghent
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - José C. Martins
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
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30
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Berlinck RGS, Bertonha AF, Takaki M, Rodriguez JPG. The chemistry and biology of guanidine natural products. Nat Prod Rep 2017; 34:1264-1301. [DOI: 10.1039/c7np00037e] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The chemistry and biology of natural guanidines isolated from microbial culture media, from marine invertebrates, as well as from terrestrial plants and animals, are reviewed.
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Affiliation(s)
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Mirelle Takaki
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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31
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Sun L, Zheng C, Webster TJ. Self-assembled peptide nanomaterials for biomedical applications: promises and pitfalls. Int J Nanomedicine 2016; 12:73-86. [PMID: 28053525 PMCID: PMC5191618 DOI: 10.2147/ijn.s117501] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Over the last several decades, a great number of advances have been made in the area of self-assembled supramolecules for regenerative medicine. Such advances have involved the design, preparation, and characterization of brand new self-assembled peptide nanomaterials for a variety of applications. Among all biomolecules considered for self-assembly applications, peptides have attracted a great deal of attention as building blocks for bottom-up fabrication, due to their versatility, ease of manufacturing, low costs, tunable structures, and versatile properties. Herein, some of the more exciting new designs of self-assembled peptides and their associated unique features are reviewed and several promising applications of how self-assembled peptides are advancing drug delivery, tissue engineering, antibacterial therapy, and biosensor device applications are highlighted.
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Affiliation(s)
- Linlin Sun
- Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Chunli Zheng
- Pharmaceutical Research Institute, China Pharmaceutical University, Nanjing, People’s Republic of China
| | - Thomas J Webster
- Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
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32
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The action mechanism of daptomycin. Bioorg Med Chem 2016; 24:6253-6268. [DOI: 10.1016/j.bmc.2016.05.052] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/20/2016] [Accepted: 05/26/2016] [Indexed: 11/15/2022]
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Narita K, Katoh Y, Ojima KI, Dan S, Yamori T, Ito A, Yoshida M, Katoh T. Total Synthesis of the Depsipeptide FR901375 and Preliminary Evaluation of Its Biological Activity. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Koichi Narita
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Yuya Katoh
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Ken-ichi Ojima
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Singo Dan
- Division of Molecular Pharmacology; Cancer Chemotherapy Centre; Japanese Foundation for Cancer Research; 3-8-31 Ariake, Koto-ku 135-8550 Tokyo Japan
| | - Takao Yamori
- Division of Molecular Pharmacology; Cancer Chemotherapy Centre; Japanese Foundation for Cancer Research; 3-8-31 Ariake, Koto-ku 135-8550 Tokyo Japan
- Pharmaceuticals and Medical Devices Agency (PMDA); 3-3-2 Kasumigaseki, Chiyoda-ku 100-0013 Tokyo Japan
| | - Akihiro Ito
- RIKEN; Chemical Genetics Laboratory; 2-1 Hirosawa 351-0198 Wako-shi Saitama Japan
| | - Minoru Yoshida
- RIKEN; Chemical Genetics Laboratory; 2-1 Hirosawa 351-0198 Wako-shi Saitama Japan
| | - Tadashi Katoh
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
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34
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Elshaarawy RF, Janiak C. Antibacterial susceptibility of new copper(II) N-pyruvoyl anthranilate complexes against marine bacterial strains – In search of new antibiofouling candidate. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2015.04.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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35
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Arvanitis M, Li G, Li DD, Cotnoir D, Ganley-Leal L, Carney DW, Sello JK, Mylonakis E. A Conformationally Constrained Cyclic Acyldepsipeptide Is Highly Effective in Mice Infected with Methicillin-Susceptible and -Resistant Staphylococcus aureus. PLoS One 2016; 11:e0153912. [PMID: 27101010 PMCID: PMC4839560 DOI: 10.1371/journal.pone.0153912] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 04/06/2016] [Indexed: 01/21/2023] Open
Abstract
Background Cyclic acyldepsipeptides (ADEPs) are a novel class of antibacterial agents, some of which (e.g., ADEP 4) are highly active against Gram-positive bacteria. The focus of these in vivo studies is ADEP B315, a rationally designed compound that has the most potent in vitro activity of any ADEP analog reported to date. Methods In vivo efficacy experiments were performed using lethal intraperitoneal mice infection models with a methicillin-sensitive S. aureus (MSSA) and a methicillin-resistant (MRSA) strain. The infected mice were treated with ADEP B315, a des-methyl analog of ADEP 4, vancomycin, or the vehicle used for the ADEPs and their survival was assessed daily. A subset of MSSA-infected mice was sacrificed soon after inoculation and the bacterial burden was measured in their livers and spleens. The toxicity of ADEP B315 was assessed in viability assays using human whole blood cultures. Results In the MSSA experiments, all mice treated with the vehicle succumbed to the infection within 24 hours. All tested compounds were effective in prolonging survival of infected mice (p<0.001). Mice treated with ADEP B315 had a 39% survival rate by 10 days compared to 7% survival in mice treated with a des-methyl ADEP 4 analog (p = 0.017). Survival of the infected mice treated with ADEP B315 was comparable to those treated with vanocmycin (p = 0.12) at the same dose. Further, bacterial burden in the liver and spleen was significantly lower in mice treated with ADEP B315 compared to controls. In the MRSA experiments, ADEP B315 was able to significantly prolong survival compared to mice treated with either the vehicle (p = 0.001) or vancomycin (p = 0.007). ADEP B315 exhibited no significant toxicity in human whole blood cultures at concentrations up to 25 μg/ml. Conclusions ADEP B315 is safe and can cure mice that have lethal infections of methicillin-sensitive and -resistant strains of S. aureus.
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Affiliation(s)
- Marios Arvanitis
- Infectious Diseases Division, Rhode Island Hospital, Providence, RI, United States of America
- Warren Alpert Medical School of Brown University, Providence, RI, United States of America
| | - Gang Li
- Infectious Diseases Division, Rhode Island Hospital, Providence, RI, United States of America
- Warren Alpert Medical School of Brown University, Providence, RI, United States of America
| | - De-Dong Li
- Infectious Diseases Division, Rhode Island Hospital, Providence, RI, United States of America
- Warren Alpert Medical School of Brown University, Providence, RI, United States of America
| | - Daniel Cotnoir
- Department of Pediatrics, Hasbro Children's Hospital, Brown University Alpert Medical School, Providence, RI, United States of America
| | - Lisa Ganley-Leal
- Department of Pediatrics, Hasbro Children's Hospital, Brown University Alpert Medical School, Providence, RI, United States of America
| | - Daniel W. Carney
- Department of Chemistry, Brown University, 324 Brook Street, Providence, RI, United States of America
| | - Jason K. Sello
- Department of Chemistry, Brown University, 324 Brook Street, Providence, RI, United States of America
- * E-mail: (EM); (JKS)
| | - Eleftherios Mylonakis
- Infectious Diseases Division, Rhode Island Hospital, Providence, RI, United States of America
- Warren Alpert Medical School of Brown University, Providence, RI, United States of America
- * E-mail: (EM); (JKS)
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36
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Goodreid JD, Janetzko J, Santa Maria JP, Wong KS, Leung E, Eger BT, Bryson S, Pai EF, Gray-Owen SD, Walker S, Houry WA, Batey RA. Development and Characterization of Potent Cyclic Acyldepsipeptide Analogues with Increased Antimicrobial Activity. J Med Chem 2016; 59:624-46. [PMID: 26818454 DOI: 10.1021/acs.jmedchem.5b01451] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The problem of antibiotic resistance has prompted the search for new antibiotics with novel mechanisms of action. Analogues of the A54556 cyclic acyldepsipeptides (ADEPs) represent an attractive class of antimicrobial agents that act through dysregulation of caseinolytic protease (ClpP). Previous studies have shown that ADEPs are active against Gram-positive bacteria (e.g., MRSA, VRE, PRSP (penicillin-resistant Streptococcus pneumoniae)); however, there are currently few studies examining Gram-negative bacteria. In this study, the synthesis and biological evaluation of 14 novel ADEPs against a variety of pathogenic Gram-negative and Gram-positive organisms is outlined. Optimization of the macrocyclic core residues and N-acyl side chain culminated in the development of 26, which shows potent activity against the Gram-negative species Neisseria meningitidis and Neisseria gonorrheae and improved activity against the Gram-positive organisms Staphylococcus aureus and Enterococcus faecalis in comparison with known analogues. In addition, the co-crystal structure of an ADEP-ClpP complex derived from N. meningitidis was solved.
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Affiliation(s)
- Jordan D Goodreid
- Davenport Research Laboratories, Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - John Janetzko
- Department of Microbiology and Immunobiology, Harvard Medical School , Boston, Massachusetts 02115, United States
- Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States
| | - John P Santa Maria
- Department of Microbiology and Immunobiology, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Keith S Wong
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Elisa Leung
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Bryan T Eger
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Steve Bryson
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
- The Campbell Family Institute for Cancer Research, University Health Network , Toronto, Ontario M5G 1L7, Canada
| | - Emil F Pai
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
- Department of Molecular Genetics, University of Toronto , Toronto, Ontario M5S 1A8, Canada
- Department of Medical Biophysics, University of Toronto , Toronto, Ontario M5S 1A8, Canada
- The Campbell Family Institute for Cancer Research, University Health Network , Toronto, Ontario M5G 1L7, Canada
| | - Scott D Gray-Owen
- Department of Molecular Genetics, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Suzanne Walker
- Department of Microbiology and Immunobiology, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Walid A Houry
- Department of Biochemistry, University of Toronto , Toronto, Ontario M5S 1A8, Canada
| | - Robert A Batey
- Davenport Research Laboratories, Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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37
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Bionda N, Fleeman RM, de la Fuente-Núñez C, Rodriguez MC, Reffuveille F, Shaw LN, Pastar I, Davis SC, Hancock REW, Cudic P. Identification of novel cyclic lipopeptides from a positional scanning combinatorial library with enhanced antibacterial and antibiofilm activities. Eur J Med Chem 2016; 108:354-363. [PMID: 26703794 PMCID: PMC4724249 DOI: 10.1016/j.ejmech.2015.11.032] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/12/2015] [Accepted: 11/17/2015] [Indexed: 12/25/2022]
Abstract
Treating bacterial infections can be difficult due to innate or acquired resistance mechanisms, and the formation of biofilms. Cyclic lipopeptides derived from fusaricidin/LI-F natural products represent particularly attractive candidates for the development of new antibacterial and antibiofilm agents, with the potential to meet the challenge of bacterial resistance to antibiotics. A positional-scanning combinatorial approach was used to identify the amino acid residues responsible for driving antibacterial activity, and increase the potency of these cyclic lipopeptides. Screening against the antibiotic resistant ESKAPE pathogens revealed the importance of hydrophobic as well as positively charged amino acid residues for activity of this class of peptides. The improvement in potency was especially evident against bacterial biofilms, since the lead cyclic lipopeptide showed promising in vitro and in vivo anti-biofilm activity at the concentration far below its respective MICs. Importantly, structural changes resulting in a more hydrophobic and positively charged analog did not lead to an increase in toxicity toward human cells.
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Affiliation(s)
- Nina Bionda
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie 34987-2352, FLA, USA
| | - Renee M Fleeman
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, ISA2015, Tampa 33620-5150, FLA, USA
| | - César de la Fuente-Núñez
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, 232-2259 Lower Mall Research Station, University of British Columbia, Vancouver V6T 1Z4, BC, Canada
| | - Maria C Rodriguez
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie 34987-2352, FLA, USA
| | - Fany Reffuveille
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, 232-2259 Lower Mall Research Station, University of British Columbia, Vancouver V6T 1Z4, BC, Canada
| | - Lindsey N Shaw
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, ISA2015, Tampa 33620-5150, FLA, USA
| | - Irena Pastar
- Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FLA, USA
| | - Stephen C Davis
- Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FLA, USA
| | - Robert E W Hancock
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, 232-2259 Lower Mall Research Station, University of British Columbia, Vancouver V6T 1Z4, BC, Canada
| | - Predrag Cudic
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie 34987-2352, FLA, USA.
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Cudic P, Joshi N, Sagher D, Williams BT, Stawikowski MJ, Weissbach H. Identification of activators of methionine sulfoxide reductases A and B. Biochem Biophys Res Commun 2015; 469:863-7. [PMID: 26718410 DOI: 10.1016/j.bbrc.2015.12.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 12/18/2015] [Indexed: 11/25/2022]
Abstract
The methionine sulfoxide reductase (Msr) family of enzymes has been shown to protect cells against oxidative damage. The two major Msr enzymes, MsrA and MsrB, can repair oxidative damage to proteins due to reactive oxygen species, by reducing the methionine sulfoxide in proteins back to methionine. A role of MsrA in animal aging was first demonstrated in Drosophila melanogaster where transgenic flies over-expressing recombinant bovine MsrA had a markedly extended life span. Subsequently, MsrA was also shown to be involved in the life span extension in Caenorhabditis elegans. These results supported other studies that indicated up-regulation, or activation, of the normal cellular protective mechanisms that cells use to defend against oxidative damage could be an approach to treat age related diseases and slow the aging process. In this study we have identified, for the first time, compounds structurally related to the natural products fusaricidins that markedly activate recombinant bovine and human MsrA and human MsrB.
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Affiliation(s)
- Predrag Cudic
- Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida, USA
| | - Neelambari Joshi
- Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, FL, USA
| | - Daphna Sagher
- Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, FL, USA
| | - Brandon T Williams
- Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida, USA
| | - Maciej J Stawikowski
- Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, FL, USA; Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, USA
| | - Herbert Weissbach
- Center for Molecular Biology and Biotechnology, Florida Atlantic University, Jupiter, FL, USA.
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Bionda N, Fasan R. Ribosomal Synthesis of Natural-Product-Like Bicyclic Peptides in Escherichia coli. Chembiochem 2015; 16:2011-6. [PMID: 26179106 DOI: 10.1002/cbic.201500179] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Indexed: 12/28/2022]
Abstract
Methods to access natural-product-like macrocyclic peptides can disclose new opportunities for the exploration of this important structural class for chemical biology and drug discovery applications. Here, the scope and mechanism of a novel strategy for directing the biosynthesis of thioether-bridged bicyclic peptides in bacterial cells was investigated. This method entails split intein-catalyzed head-to-tail cyclization of a ribosomally produced precursor peptide, combined with inter-side-chain crosslinking through a genetically encoded cysteine-reactive amino acid. This strategy could be successfully applied to achieve formation of structurally diverse bicyclic peptides with high efficiency and selectivity in Escherichia coli. Insights into the sequence of reactions underlying the peptide bicyclization process were gained from time-course experiments. Finally, the potential utility of this methodology toward the discovery of macrocyclic peptides with enhanced functional properties was demonstrated through the isolation of a bicyclic peptide with sub-micromolar affinity for streptavidin.
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Affiliation(s)
- Nina Bionda
- Department of Chemistry, University of Rochester, RC Box 270216, Rochester, NY, 14627, USA
| | - Rudi Fasan
- Department of Chemistry, University of Rochester, RC Box 270216, Rochester, NY, 14627, USA.
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40
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Peptides and Peptidomimetics for Antimicrobial Drug Design. Pharmaceuticals (Basel) 2015; 8:366-415. [PMID: 26184232 PMCID: PMC4588174 DOI: 10.3390/ph8030366] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/27/2015] [Accepted: 06/17/2015] [Indexed: 12/21/2022] Open
Abstract
The purpose of this paper is to introduce and highlight a few classes of traditional antimicrobial peptides with a focus on structure-activity relationship studies. After first dissecting the important physiochemical properties that influence the antimicrobial and toxic properties of antimicrobial peptides, the contributions of individual amino acids with respect to the peptides antibacterial properties are presented. A brief discussion of the mechanisms of action of different antimicrobials as well as the development of bacterial resistance towards antimicrobial peptides follows. Finally, current efforts on novel design strategies and peptidomimetics are introduced to illustrate the importance of antimicrobial peptide research in the development of future antibiotics.
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Cochrane JR, Exner CJ, Jolliffe KA. Total Synthesis and Reassignment of the Structures of the Antimicrobial Lipodepsipeptides Circulocin γ and δ. J Org Chem 2015; 80:4491-500. [DOI: 10.1021/acs.joc.5b00349] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James R. Cochrane
- School of Chemistry, The University of Sydney, Sydney 2006, New South Wales, Australia
| | - Claudia J. Exner
- School of Chemistry, The University of Sydney, Sydney 2006, New South Wales, Australia
| | - Katrina A. Jolliffe
- School of Chemistry, The University of Sydney, Sydney 2006, New South Wales, Australia
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42
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Cochrane SA, Vederas JC. Lipopeptides from Bacillus and Paenibacillus spp.: A Gold Mine of Antibiotic Candidates. Med Res Rev 2014; 36:4-31. [DOI: 10.1002/med.21321] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - John C. Vederas
- Department of Chemistry; University of Alberta; Alberta Canada
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43
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De Vleeschouwer M, Sinnaeve D, Van den Begin J, Coenye T, Martins JC, Madder A. Rapid Total Synthesis of Cyclic Lipodepsipeptides as a Premise to Investigate their Self‐Assembly and Biological Activity. Chemistry 2014; 20:7766-75. [DOI: 10.1002/chem.201402066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Matthias De Vleeschouwer
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Davy Sinnaeve
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Jos Van den Begin
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Harelbekestraat 72, 9000 Ghent (Belgium)
| | - José C. Martins
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Annemieke Madder
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
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mRNA display: from basic principles to macrocycle drug discovery. Drug Discov Today 2013; 19:388-99. [PMID: 24157402 DOI: 10.1016/j.drudis.2013.10.011] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 09/27/2013] [Accepted: 10/14/2013] [Indexed: 12/29/2022]
Abstract
We describe a new discovery technology that uses mRNA-display to rapidly synthesize and screen macrocyclic peptide libraries to explore a valuable region of chemical space typified by natural products. This technology allows high-affinity peptidic macrocycles containing modified backbones and unnatural side chains to be readily selected based on target binding. Success stories covering the first examples of these libraries suggest that they could be used for the discovery of intracellular protein-protein interaction inhibitors, highly selective enzyme inhibitors or synthetic replacements for monoclonal antibodies. The review concludes with a look to the future regarding how this technology might be improved with respect to library design for cell permeability and bioavailability.
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Li Y, Bionda N, Yongye A, Geer P, Stawikowski M, Cudic P, Martinez K, Houghten RA. Dissociation of Antimicrobial and Hemolytic Activities of Gramicidin S through N-Methylation Modification. ChemMedChem 2013; 8:1865-72. [DOI: 10.1002/cmdc.201300232] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 11/06/2022]
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Bionda N, Fleeman RM, Shaw LN, Cudic P. Effect of ester to amide or N-methylamide substitution on bacterial membrane depolarization and antibacterial activity of novel cyclic lipopeptides. ChemMedChem 2013; 8:1394-402. [PMID: 23780744 PMCID: PMC3787707 DOI: 10.1002/cmdc.201300173] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 11/12/2022]
Abstract
Cyclic lipopeptides derived from the fusaricidin/LI-F family of naturally occurring antibiotics represent particularly attractive candidates for the development of new antibacterial agents. In comparison with natural products, these derivatives may offer better stability under physiologically relevant conditions and lower nonspecific toxicity, while preserving their antibacterial activity. In this study we assessed the ability of cyclic lipodepsipeptide 1 and its analogues--amide 2, N-methylamide 3, and linear peptide 4--to interact with the cytoplasmic membranes of selected Gram-positive bacteria. We also investigated their bacteriostatic/bactericidal modes of action and in vivo potency by using a Galleria mellonella model of MRSA infection. Cyclic lipopeptides 1 and 2 depolarize the cytoplasmic membranes of Gram-positive bacteria in a concentration-dependent manner. The degree of membrane depolarization was influenced by the structural and physical properties of 1 and 2, with the more flexible and hydrophobic peptide 1 being most efficient. However, membrane depolarization does not correlate with bacterial cell lethality, suggesting that membrane-targeting activity is not the main mode of action for this class of antibacterial peptides. Conversely, substitution of the depsipeptide bond in 1 with an N-methylamide bond in 3, or its hydrolysis to peptide 4, lead to a complete loss of antibacterial activity and indicate that the conformation of cyclic lipopeptides plays a role in their antibacterial activities. Cyclic lipopeptides 1 and 2 are also capable of improving the survival of G. mellonella larvae infected with MRSA at varying efficiencies, reflecting their in vitro activities. Gaining more insight into the structure-activity relationship and mode of action of these cyclic lipopeptides may enable the development of new antibiotics of this class with improved antibacterial activity.
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Affiliation(s)
- Nina Bionda
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987 (USA)
| | - Renee M. Fleeman
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, ISA2015, Tampa, FL 33620-5150 (USA)
| | - Lindsey N. Shaw
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, ISA2015, Tampa, FL 33620-5150 (USA)
| | - Predrag Cudic
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987 (USA)
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Bionda N, Pitteloud JP, Cudic P. Cyclic lipodepsipeptides: a new class of antibacterial agents in the battle against resistant bacteria. Future Med Chem 2013; 5:1311-30. [PMID: 23859209 PMCID: PMC3845972 DOI: 10.4155/fmc.13.86] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
In order to provide effective treatment options for infections caused by multidrug-resistant bacteria, innovative antibiotics are necessary, preferably with novel modes of action and/or belonging to novel classes of drugs. Naturally occurring cyclic lipodepsipeptides, which contain one or more ester bonds along with the amide bonds, have emerged as promising candidates for the development of new antibiotics. Some of these natural products are either already marketed or in advanced stages of clinical development. However, despite the progress in the development of new antibacterial agents, it is inevitable that resistant strains of bacteria will emerge in response to the widespread use of a particular antibiotic and limit its lifetime. Therefore, development of new antibiotics remains our most efficient way to counteract bacterial resistance.
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Affiliation(s)
- Nina Bionda
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Post St Lucie, FL 34987, USA
| | - Jean-Philippe Pitteloud
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Post St Lucie, FL 34987, USA
| | - Predrag Cudic
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Post St Lucie, FL 34987, USA
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Bionda N, Pitteloud JP, Cudic P. Solid-phase synthesis of fusaricidin/LI-F class of cyclic lipopeptides: Guanidinylation of resin-bound peptidyl amines. Biopolymers 2013; 100:160-6. [PMID: 23436339 PMCID: PMC3787705 DOI: 10.1002/bip.22186] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 11/02/2012] [Accepted: 11/12/2012] [Indexed: 01/20/2023]
Abstract
Fusaricidins/LI-Fs and related cyclic lipopeptides represent an interesting new class of antibacterial peptides with the potential to meet the challenge of antibiotic resistance in bacteria. Our previous study (Bionda et al. ChemMedChem 2012, 7, 871-882) revealed the significance of the guanidinium group located at the termini of the lipidic tails of these cyclic lipopeptides for their antibacterial activities. Therefore, devising a synthetic strategy that will allow incorporation of guanidinium functionality into their structure is of particular practical importance. Since appropriately protected guanidino fatty acid building blocks are not commercially available, our strategy toward guanidinylated fusaricidin/LI-F analogs include solid-phase synthesis of a cyclic lipopeptide precursor possessing a lipidic tail with a terminal amino group followed by its conversion into corresponding guanidine. To find the optimal method for this conversion, we have examined commonly used guanidinylation reagents under the conditions compatible with standard solid-phase peptide synthesis. Described experimental results demonstrated superiority of N,N'-di-Boc-N″-triflylguanidine in solid-phase preparation of fusaricidin/LI-F class of cyclic lipopeptides. The triflylguanidine reagent gave a single monoguanidinylated product in excellent yield independently of the type of solid-support.
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Affiliation(s)
- Nina Bionda
- Torrey Pines Institute for Molecular Studies, Port St. Lucie, FL, 34987; Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431
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Bionda N, Cudic P. Solid-phase guanidinylation of peptidyl amines compatible with standard Fmoc-chemistry: formation of monosubstituted guanidines. Methods Mol Biol 2013; 1081:151-165. [PMID: 24014439 DOI: 10.1007/978-1-62703-652-8_10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
With the growing importance of peptides and peptidomimetics as potential therapeutic agents, a continuous synthetic interest has been shown for their modification to provide more stable and bioactive analogs. Among many approaches, peptide/peptidomimetic guanidinylation offers access to analogs possessing functionality with strong basic properties, capable of forming stable intermolecular H-bonds, charge pairing, and cation-π interactions. Therefore, guanidinium functional group is considered as an important pharmacophoric element. Although a number of methods for solid-phase guanidinylation reactions exist, only a few are fully compatible with standard Fmoc solid-phase peptide chemistry.In this chapter we summarize the solid-phase guanidinylation methods fully compatible with standard Fmoc-synthetic methodology. This includes use of direct guanidinylating reagents such as 1-H-pyrazole-1-carboxamidine and triflylguanidine, and guanidinylation with di-protected thiourea derivatives in combination with promoters such as Mukaiyama's reagent, N-iodosuccinimide, and N,N'-diisopropylcarbodiimide.
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Affiliation(s)
- Nina Bionda
- Torrey Pines Institute for Molecular Studies, Port St. Lucie, FL, USA
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Cochrane JR, Yoon DH, McErlean CSP, Jolliffe KA. A macrolactonization approach to the total synthesis of the antimicrobial cyclic depsipeptide LI-F04a and diastereoisomeric analogues. Beilstein J Org Chem 2012; 8:1344-51. [PMID: 23019469 PMCID: PMC3458759 DOI: 10.3762/bjoc.8.154] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 07/16/2012] [Indexed: 11/23/2022] Open
Abstract
The cyclic peptide core of the antifungal and antibiotic cyclic depsipeptide LI-F04a was synthesised by using a modified Yamaguchi macrolactonization approach. Alternative methods of macrolactonization (e.g., Corey-Nicolaou) resulted in significant epimerization of the C-terminal amino acid during the cyclization reaction. The D-stereochemistry of the alanine residue in the naturally occurring cyclic peptide may be required for the antifungal activity of this natural product.
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Affiliation(s)
- James R Cochrane
- School of Chemistry, The University of Sydney, 2006, NSW, Australia; Tel: +61-2-93512297; Fax: +61-2-93513329
| | - Dong Hee Yoon
- School of Chemistry, The University of Sydney, 2006, NSW, Australia; Tel: +61-2-93512297; Fax: +61-2-93513329
| | - Christopher S P McErlean
- School of Chemistry, The University of Sydney, 2006, NSW, Australia; Tel: +61-2-93512297; Fax: +61-2-93513329
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, 2006, NSW, Australia; Tel: +61-2-93512297; Fax: +61-2-93513329
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