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Eloïse L, Petit L, Nominé Y, Heurtault B, Ben Hadj Kaddour I, Senger B, Rodon Fores J, Vrana NE, Barbault F, Lavalle P. The antibacterial properties of branched peptides based on poly(l-arginine): In vitro antibacterial evaluation and molecular dynamic simulations. Eur J Med Chem 2024; 268:116224. [PMID: 38387338 DOI: 10.1016/j.ejmech.2024.116224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/27/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024]
Abstract
The emergence of bacterial strains resistant to antibiotics is a major issue in the medical field. Antimicrobial peptides are widely studied as they do not generate as much resistant bacterial strains as conventional antibiotics and present a broad range of activity. Among them, the homopolypeptide poly(l-arginine) presents promising antibacterial properties, especially in the perspective of its use in biomaterials. Linear poly(l-arginine) has been extensively studied but the impact of its 3D structure remains unknown. In this study, the antibacterial properties of newly synthesized branched poly(l-arginine) peptides, belonging to the family of multiple antigenic peptides, are evaluated. First, in vitro activities of the peptides shows that branched poly(l-arginine) is more efficient than linear poly(l-arginine) containing the same number of arginine residues. Surprisingly, peptides with more arms and more residues are not the most effective. To better understand these unexpected results, interactions between these peptides and the membranes of Gram positive and Gram negative bacteria are simulated thanks to molecular dynamic. It is observed that the bacterial membrane is more distorted by the branched structure than by the linear one and by peptides containing smaller arms. This mechanism of action is in full agreement with in vitro results and suggest that our simulations form a robust model to evaluate peptide efficiency towards pathogenic bacteria.
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Affiliation(s)
- Lebaudy Eloïse
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Lauriane Petit
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | - Yves Nominé
- Institut de génétique et de biologie moléculaire et cellulaire, IGBMC, Illkirch, France
| | - Béatrice Heurtault
- Université de Strasbourg, Centre national de la recherche scientifique (CNRS), Laboratoire de Conception et Application de Molécules Bioactives UMR 7199, Faculté de Pharmacie, Illkirch, France
| | - Inès Ben Hadj Kaddour
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | - Bernard Senger
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Jennifer Rodon Fores
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Nihal Engin Vrana
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | | | - Philippe Lavalle
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France.
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2
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Chen J, Jiang Y, Yan J, Xu C, Ye T. Total Syntheses of Colletopeptide A and Colletotrichamide A. Molecules 2023; 28:7194. [PMID: 37894673 PMCID: PMC10608858 DOI: 10.3390/molecules28207194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/27/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
The first total syntheses of cyclic depsipeptides colletopeptide A and colletotrichamide A, have been accomplished. The key advanced intermediate, a cyclic tridepsipeptide derivative, was constructed using a sequence of transformations that features asymmetric Brown crotylation, cross metathesis, Yamaguchi esterification, ozonolysis, and macrolactamization. A late-stage incorporation of the mannose fragment completed the synthesis of colletotrichamide A, and the desilylation of the common intermediate gave rise to colletopeptide A, which led to unambiguous confirmation of the absolute stereochemistry of the aforementioned natural products.
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Affiliation(s)
- Jing Chen
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China; (J.C.); (Y.J.)
| | - Yangyang Jiang
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China; (J.C.); (Y.J.)
| | - Jialei Yan
- Innovation Center of Marine Biotechnology and Pharmaceuticals, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China;
| | - Chao Xu
- Innovation Center of Marine Biotechnology and Pharmaceuticals, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China;
- QianYan (Shenzhen) Pharmatech. Ltd., Building-3, Longcheng Industrial Park, Qinglin Road West, Longgang District, Shenzhen 518172, China
| | - Tao Ye
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China; (J.C.); (Y.J.)
- QianYan (Shenzhen) Pharmatech. Ltd., Building-3, Longcheng Industrial Park, Qinglin Road West, Longgang District, Shenzhen 518172, China
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3
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Abstract
Plant disease control requires novel approaches to mitigate the spread of and losses caused by current, emerging, and re-emerging diseases and to adapt plant protection to global climate change and the restrictions on the use of conventional pesticides. Currently, disease management relies mainly on biopesticides, which are required for the sustainable use of plant-protection products. Functional peptides are candidate biopesticides because they originate from living organisms or are synthetic analogs and provide novel mechanisms of action against plant pathogens. Hundreds of compounds exist that cover an extensive range of activities against viruses, bacteria and phytoplasmas, fungi and oomycetes, and nematodes. Natural sources, chemical synthesis, and biotechnological platforms may provide peptides at large scale for the industry and growers. The main challenges for their use in plant disease protection are (a) the requirement of stability in the plant environment and counteracting resistance in pathogen populations, (b) the need to develop suitable formulations to increase their shelf life and methods of application, (c) the selection of compounds with acceptable toxicological profiles, and (d) the high cost of production for agricultural purposes. In the near future, it is expected that several functional peptides will be commercially available for plant disease control, but more effort is needed to validate their efficacy at the field level and fulfill the requirements of the regulatory framework.
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Affiliation(s)
- Emilio Montesinos
- Institute of Food and Agricultural Technology, Plant Pathology-CIDSAV, University of Girona, Girona, Spain;
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4
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Kim J, Kim JC, Sang MK. Identification of isomeric cyclo(leu-pro) produced by Pseudomonas sesami BC42 and its differential antifungal activities against Colletotrichum orbiculare. Front Microbiol 2023; 14:1230345. [PMID: 37637119 PMCID: PMC10448827 DOI: 10.3389/fmicb.2023.1230345] [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: 05/30/2023] [Accepted: 07/31/2023] [Indexed: 08/29/2023] Open
Abstract
Pseudomonas spp. produce various antimicrobial substances, including cyclic peptides, which have been shown to suppress fungal pathogens. In a previous study, Pseudomonas sesami BC42 was selected to control anthracnose caused by Colletotrichum orbiculare in cucumber plants, and the bioactive extract of strain BC42 inhibited fungal growth and development. In this work, preparative thin-layer chromatography was conducted to identify the antifungal compounds in the extract of strain BC42, and the portion of the extract that exhibited antifungal activity was further analyzed by gas chromatography-mass spectrometry. Three different isomers of the cyclic dipeptide, cyclo(Leu-Pro), were identified: cyclo(l-Leu-l-Pro), cyclo(d-Leu-d-Pro), and cyclo(d-Leu-l-Pro). Among these, 100 μg/mL of cyclo(l-Leu-l-Pro) significantly and more effectively inhibited the germination of conidia and appressorium formation and reduced leaf lesion size caused by C. orbiculare, relative to the control; cyclo(d-Leu-d-Pro) significantly reduced conidia germination and lesion occurrence, however, cyclo(d-Leu-l-Pro) did not exhibit antifungal activity. Therefore, the cyclo(l-Leu-l-Pro) and cyclo(d-Leu-d-Pro) derived from P. sesami BC42 may be a promising candidate for biocontrol applications in agriculture.
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Affiliation(s)
- Jiwon Kim
- Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea
- Department of Agricultural Biology, College of Agricultural and Life Sciences, Jeonbuk National University, Jeonju-si, Republic of Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Mee Kyung Sang
- Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea
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5
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Breine A, Van Holsbeeck K, Martin C, Gonzalez S, Mannes M, Pardon E, Steyaert J, Remaut H, Ballet S, Van der Henst C. Bypassing the Need for Cell Permeabilization: Nanobody CDR3 Peptide Improves Binding on Living Bacteria. Bioconjug Chem 2023. [PMID: 37418494 PMCID: PMC10360062 DOI: 10.1021/acs.bioconjchem.3c00116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
Membrane interaction constitutes to be an essential parameter in the mode of action of entities such as proteins, as well as cell-penetrating and antimicrobial peptides, resulting in noninvasive or lytic activities depending on the membrane compositions and interactions. Recently, a nanobody able to interact with the top priority, multidrug-resistant bacterial pathogen Acinetobacter baumannii was discovered, although binding took place with fixed cells only. To potentially overcome this limitation, linear peptides corresponding to the complementarity-determining regions (CDR) were synthesized and fluorescently labeled. Microscopy data indicated clear membrane interactions of the CDR3 sequence with living A. baumannii cells, indicating both the importance of the CDR3 as part of the parent nanobody paratope and the improved binding ability and thus avoiding the need for permeabilization of the cells. In addition, cyclization of the peptide with an additionally introduced rigidifying 1,2,3-triazole bridge retains its binding ability while proteolytically protecting the peptide. Overall, this study resulted in the discovery of novel peptides binding a multidrug-resistant pathogen.
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Affiliation(s)
- A Breine
- Microbial Resistance and Drug Discovery, VIB-VUB Center for Structural Biology, VIB, Flanders Institute for Biotechnology, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - K Van Holsbeeck
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - C Martin
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - S Gonzalez
- CNRS, BioCIS, CY Cergy-Paris Université, 95000 Neuville sur Oise, France
| | - M Mannes
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - E Pardon
- Microbial Resistance and Drug Discovery, VIB-VUB Center for Structural Biology, VIB, Flanders Institute for Biotechnology, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - J Steyaert
- Microbial Resistance and Drug Discovery, VIB-VUB Center for Structural Biology, VIB, Flanders Institute for Biotechnology, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - H Remaut
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
- Structural and Molecular Microbiology, Structural Biology Research Center, VIB, 1050 Brussels, Belgium
| | - S Ballet
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - C Van der Henst
- Microbial Resistance and Drug Discovery, VIB-VUB Center for Structural Biology, VIB, Flanders Institute for Biotechnology, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
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6
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Dias SA, Pinto SN, Silva-Herdade AS, Cheneval O, Craik DJ, Coutinho A, Castanho MARB, Henriques ST, Veiga AS. A designed cyclic analogue of gomesin has potent activity against Staphylococcus aureus biofilms. J Antimicrob Chemother 2022; 77:3256-3264. [PMID: 36171717 DOI: 10.1093/jac/dkac309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/18/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Infections caused by bacterial biofilms are very difficult to treat. The use of currently approved antibiotics even at high dosages often fails, making the treatment of these infections very challenging. Novel antimicrobial agents that use distinct mechanisms of action are urgently needed. OBJECTIVES To explore the use of [G1K,K8R]cGm, a designed cyclic analogue of the antimicrobial peptide gomesin, as an alternative approach to treat biofilm infections. METHODS We studied the activity of [G1K,K8R]cGm against biofilms of Staphylococcus aureus, a pathogen associated with several biofilm-related infections. A combination of atomic force and real-time confocal laser scanning microscopies was used to study the mechanism of action of the peptide. RESULTS The peptide demonstrated potent activity against 24 h-preformed biofilms through a concentration-dependent ability to kill biofilm-embedded cells. Mechanistic studies showed that [G1K,K8R]cGm causes morphological changes on bacterial cells and permeabilizes their membranes across the biofilm with a half-time of 65 min. We also tested an analogue of [G1K,K8R]cGm without disulphide bonds, and a linear unfolded analogue, and found both to be inactive. CONCLUSIONS The results suggest that the 3D structure of [G1K,K8R]cGm and its stabilization by disulphide bonds are essential for its antibacterial and antibiofilm activities. Moreover, our findings support the potential application of this stable cyclic antimicrobial peptide to fight bacterial biofilms.
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Affiliation(s)
- Susana A Dias
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz 1649-028 Lisboa, Portugal
| | - Sandra N Pinto
- iBB-Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1049-001 Lisboa, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ana S Silva-Herdade
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz 1649-028 Lisboa, Portugal
| | - Olivier Cheneval
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD, 4072 Australia
| | - David J Craik
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD, 4072 Australia
| | - Ana Coutinho
- iBB-Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1049-001 Lisboa, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.,Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016 Lisboa, Portugal
| | - Miguel A R B Castanho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz 1649-028 Lisboa, Portugal
| | - Sónia T Henriques
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD, 4072 Australia.,School of Biomedical Sciences, Queensland University of Technology, Translational Research Institute, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Brisbane, QLD, 4102 Australia
| | - Ana Salomé Veiga
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz 1649-028 Lisboa, Portugal
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7
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Lipid membrane-mediated assembly of the functional amyloid-forming peptide Somatostatin-14. Biophys Chem 2022; 287:106830. [DOI: 10.1016/j.bpc.2022.106830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/03/2022] [Accepted: 05/17/2022] [Indexed: 11/20/2022]
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8
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Farah HI, Supratman U, Hidayat AT, Maharani R. An Overview of the Synthesis of Biologically Active Cyclodepsipeptides. ChemistrySelect 2022. [DOI: 10.1002/slct.202103470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Harra Ismi Farah
- Department of Chemistry Faculty of Mathematics and Natural Sciences Laboratorium Sentral Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
- Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
- Pharmaceutical Research and Development Laboratory of Farmaka Tropis Pharmacy Faculty Universitas Mulawarman Jalan Penajam No.1 Samarinda 75119 East Kalimantan Indonesia
| | - Unang Supratman
- Department of Chemistry Faculty of Mathematics and Natural Sciences Laboratorium Sentral Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
- Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
| | - Ace Tatang Hidayat
- Department of Chemistry Faculty of Mathematics and Natural Sciences Laboratorium Sentral Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
- Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
| | - Rani Maharani
- Department of Chemistry Faculty of Mathematics and Natural Sciences Laboratorium Sentral Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
- Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Jalan Raya Bandung-Sumedang Km 21 Jatinangor 45363 West Java Indonesia
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9
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Nam SY, Lee J, Shin SS, Yoo HJ, Yun M, Kim S, Kim JH, Lee JH. Antibacterial and cytotoxic properties of star-shaped quaternary ammonium-functionalized polymers with different pendant groups. Polym Chem 2022. [DOI: 10.1039/d2py00007e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The correlation between the structure and biological activity of polymers is critically important for rationally designing effective antibacterial polymers. Here, the antibacterial activity, cytotoxicity, and selectivity of structurally well-defined, star-shaped...
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10
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Gruden Š, Poklar Ulrih N. Diverse Mechanisms of Antimicrobial Activities of Lactoferrins, Lactoferricins, and Other Lactoferrin-Derived Peptides. Int J Mol Sci 2021; 22:ijms222011264. [PMID: 34681923 PMCID: PMC8541349 DOI: 10.3390/ijms222011264] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 12/22/2022] Open
Abstract
Lactoferrins are an iron-binding glycoprotein that have important protective roles in the mammalian body through their numerous functions, which include antimicrobial, antitumor, anti-inflammatory, immunomodulatory, and antioxidant activities. Among these, their antimicrobial activity has been the most studied, although the mechanism behind antimicrobial activities remains to be elucidated. Thirty years ago, the first lactoferrin-derived peptide was isolated and showed higher antimicrobial activity than the native lactoferrin lactoferricin. Since then, numerous studies have investigated the antimicrobial potencies of lactoferrins, lactoferricins, and other lactoferrin-derived peptides to better understand their antimicrobial activities at the molecular level. This review defines the current antibacterial, antiviral, antifungal, and antiparasitic activities of lactoferrins, lactoferricins, and lactoferrin-derived peptides. The primary focus is on their different mechanisms of activity against bacteria, viruses, fungi, and parasites. The role of their structure, amino-acid composition, conformation, charge, hydrophobicity, and other factors that affect their mechanisms of antimicrobial activity are also reviewed.
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11
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Claro B, Peón A, González-Freire E, Goormaghtigh E, Amorín M, Granja JR, Garcia-Fandiño R, Bastos M. Macromolecular assembly and membrane activity of antimicrobial D,L-α-Cyclic peptides. Colloids Surf B Biointerfaces 2021; 208:112086. [PMID: 34492602 DOI: 10.1016/j.colsurfb.2021.112086] [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: 05/10/2021] [Revised: 08/24/2021] [Accepted: 08/28/2021] [Indexed: 01/20/2023]
Abstract
Antimicrobial peptides are viewed as a promising alternative to conventional antibiotics, as their activity through membrane targeting makes them less prone to resistance development. Among them, antimicrobial D,L-α-cyclic peptides (CPs) have been proposed as an alternative, specially due to their cyclic nature and to the presence of D-α-amino acids that increases their resistance to proteases. In present work, second generation D,L-α-cyclic peptides with proven antimicrobial activity are shown to form complex macromolecular assemblies in the presence of membranes. We addressed the CPs:membrane interactions through a combination of experimental techniques (DSC and ATR-FTIR) with coarse-grained molecular dynamics (CG-MD) simulations, aiming at understanding their interactions, macromolecular assemblies and eventually unveil their mechanism of action. DSC shows that the interaction depends heavily on the negatively charge content of the membrane and on lipid/peptide ratio, suggesting different mechanisms for the different peptides and lipid systems. CG-MD proved that CPs can self-assemble at the lipid surface as nanotubes or micellar aggregates, depending on the peptide, in agreement with ATR-FTIR results. Finally, our results shed light into possible mechanisms of action of the peptides with pending hydrocarbon tail, namely membrane extensive segregation and/or membrane disintegration through the formation of disk-like lipid/peptide aggregates.
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Affiliation(s)
- Bárbara Claro
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Antonio Peón
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Eva González-Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Erik Goormaghtigh
- Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics, ULB, Brussels, Belgium
| | - Manuel Amorín
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Juan R Granja
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Rebeca Garcia-Fandiño
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal; Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Margarida Bastos
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
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12
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A Study on the Antimicrobial and Antibiofilm Peptide 1018-K6 as Potential Alternative to Antibiotics against Food-Pathogen Salmonella enterica. Foods 2021; 10:foods10061372. [PMID: 34198540 PMCID: PMC8232012 DOI: 10.3390/foods10061372] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/31/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023] Open
Abstract
Antimicrobial resistance has become one of the major global public health concerns, and it is indispensable to search for alternatives to conventional antibiotics. Recently, antimicrobial peptides have received great attention because of their broad-spectrum antimicrobial activity at relatively low concentrations, even against pathogens such as Salmonella enterica, which is responsible for most food-borne illnesses. This work aimed at evaluating the antimicrobial and antibiofilm activity of the innate defense peptide, named 1018-K6, against S. enterica. A total of 42 strains, belonging to three different subspecies and 32 serotypes, were included in this study. The antibiotic resistance profile of all the strains and the cytotoxic effects of 1018-K6 on mammalian fibroblast cells were also investigated. Results revealed that MIC (minimum inhibitory concentrations) and MBC (minimum bactericidal concentrations) values were in the ranges of 8-64 μg/mL and 16-128 μg/mL, respectively, although most strains (97%) showed MICs between 16 and 32 μg/mL. Moreover, sub-inhibitory concentrations of 1018-K6 strongly reduced the biofilm formation in several S. enterica strains, whatever the initial inoculum size. Our results demonstrated that 1018-K6 is able to control and manage S. enterica growth with a large potential for applications in the fields of active packaging and water disinfectants.
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13
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Claro B, Goormaghtigh E, Bastos M. Attenuated total reflection-Fourier transform infrared spectroscopy: a tool to characterize antimicrobial cyclic peptide-membrane interactions. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2021; 50:629-639. [PMID: 33743025 DOI: 10.1007/s00249-020-01495-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/16/2020] [Accepted: 12/31/2020] [Indexed: 11/24/2022]
Abstract
Attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) has been used for the structural characterization of peptides and their interactions with membranes. Antimicrobial peptides (AMPs) are part of our immune system and widely studied in recent years. Many linear AMPs have been studied, but their cyclization was shown to enhance the peptide's activity. We have used cyclic peptides (CPs) of an even number of alternating D- and L-α-amino acids, an emerging class of potential AMPs. These CPs can adopt a flat-ring shape that can stack into an antiparallel structure, forming intermolecular hydrogen bonds between different units, creating a tubular β-sheet structure - self-assembled cyclic peptide nanotubes (SCPNs). To get the structural information on peptides in solution and/or in contact with membranes, Amide I and II absorptions are used as they can adopt frequency and shape band characteristics that are influenced by the strength of existing hydrogen bonds between the amide CO and NH involved in secondary structures such as helix, β-sheet or aperiodic structures. The combination of polarized lens with ATR-FTIR provides an important tool to study the orientation of peptides when interacting with lipid membranes as the information can be derived on the position relative to the membrane normal. This work shows how ATR-FTIR used together with polarized light was successfully used to characterize structurally two CPs (RSKSWPgKQ and RSKSWXC10KQ) in solution and upon interaction with negatively charged membranes of DMPG, assessing the formation and orientation of tubular structures (SCPNs) that were shown to be enhanced by the presence of the lipid membrane.
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Affiliation(s)
- Bárbara Claro
- Departamento de Química e Bioquímica, Centro de Investigação em Química, Faculdade de Ciências, CIQUP, Universidade do Porto, Porto, Portugal
| | - Erik Goormaghtigh
- Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics, ULB, Brussels, Belgium
| | - Margarida Bastos
- Departamento de Química e Bioquímica, Centro de Investigação em Química, Faculdade de Ciências, CIQUP, Universidade do Porto, Porto, Portugal.
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14
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Maharani R, Napitupulu OI, Dirgantara JM, Hidayat AT, Sumiarsa D, Harneti D, Supratman U, Fukase K. Synthesis of cyclotetrapeptide analogues of c-PLAI and evaluation of their antimicrobial properties. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201822. [PMID: 33959342 PMCID: PMC8074941 DOI: 10.1098/rsos.201822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Antimicrobial peptides (AMPs) are interesting compounds owing to their ability to kill several pathogens. In order to identify new AMPs, c-PLAI analogues were synthesized and evaluated together with their linear precursors for their antimicrobial properties against two Gram-positive bacteria (Staphylococcus aureus and Bacillus cereus), two Gram-negative bacteria (Escherichia coli and Klebsiella pneumoniae), and two fungal strains (Candida albicans and Trichophyton mentagrophytes). The new c-PLAI analogues were prepared through a combination of solid- and solution-phase syntheses, as previously employed for the synthesis of c-PLAI. The antimicrobial activity tests showed that the synthetic parent peptide c-PLAI was inactive or weakly active towards the bioindicators employed in the assay. The tests also indicated that cyclic c-PLAI analogues possessed enhanced antimicrobial properties against most of the bacteria and fungi tested. Furthermore, this study revealed that analogues containing cationic lysine residues displayed the highest activity towards most bioindicators. A combination of lysine and aromatic residues yielded analogues with broad-spectrum antimicrobial properties.
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Affiliation(s)
- Rani Maharani
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Orin Inggriani Napitupulu
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Jelang M. Dirgantara
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Ace Tatang Hidayat
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Dadan Sumiarsa
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Desi Harneti
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Unang Supratman
- Laboratorium Sentral, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jalan Raya Bandung Sumedang Km 21, Jatinangor, Kabupaten Sumedang, 45363 West Java, Indonesia
| | - Koichi Fukase
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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15
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Claro B, González-Freire E, Calvelo M, Bessa LJ, Goormaghtigh E, Amorín M, Granja JR, Garcia-Fandiño R, Bastos M. Membrane targeting antimicrobial cyclic peptide nanotubes - an experimental and computational study. Colloids Surf B Biointerfaces 2020; 196:111349. [PMID: 32992285 DOI: 10.1016/j.colsurfb.2020.111349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 08/21/2020] [Accepted: 08/25/2020] [Indexed: 02/07/2023]
Abstract
The search of new antibiotics, particularly with new mechanisms of action, is nowadays a very important public health issue, due to the worldwide increase of resistant pathogens. Within this effort, much research has been done on antimicrobial peptides, because having the membrane as a target, they represent a new antibiotic paradigm. Among these, cyclic peptides (CPs) made of sequences of D- and L-amino acids have emerged as a new class of potential antimicrobial peptides, due to their expected higher resistance to protease degradation. These CPs are planar structures that can form Self-assembled Cyclic Peptide Nanotubes (SCPNs), in particular in the presence of lipid membranes. Aiming at understanding their mechanism of action, we used biophysical experimental techniques (DSC and ATR-FTIR) together with Coarse-grained molecular dynamics (CG-MD) simulations, to characterize the interaction of these CPs with model membranes of different electrostatic charges' contents. DSC results revealed that the CPs show a strong interaction with negatively charged membranes, with differences in the strength of interactions depending on peptide and on membrane charge content, at odds with no or mild interactions with zwitterionic membranes. ATR-FTIR suggested that the peptides self-assemble at the membrane surface, adopting mainly a β-structure. The experiments with polarized light showed that in most cases they lie parallel to the membrane surface, but other forms and orientations are also apparent, depending on peptide structure and lipid:peptide ratio. The nanotube formation and orientation, as well as the dependence on membrane charge were also confirmed by the CG-MD simulations. These provide detail on the position and interactions, in agreement with the experimental results. Based on the findings reported here, we could proceed to the design and synthesis of a second-generation CPs, based on CP2 (soluble peptide), with increased activity and reduced toxicity.
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Affiliation(s)
- Bárbara Claro
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Eva González-Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Martin Calvelo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Lucinda J Bessa
- LAQV/Requimte, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Erik Goormaghtigh
- Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics, ULB, Brussels, Belgium
| | - Manuel Amorín
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Juan R Granja
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rebeca Garcia-Fandiño
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal; Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Margarida Bastos
- CIQUP, Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
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16
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Ting DSJ, Beuerman RW, Dua HS, Lakshminarayanan R, Mohammed I. Strategies in Translating the Therapeutic Potentials of Host Defense Peptides. Front Immunol 2020; 11:983. [PMID: 32528474 PMCID: PMC7256188 DOI: 10.3389/fimmu.2020.00983] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/27/2020] [Indexed: 01/13/2023] Open
Abstract
The golden era of antibiotics, heralded by the discovery of penicillin, has long been challenged by the emergence of antimicrobial resistance (AMR). Host defense peptides (HDPs), previously known as antimicrobial peptides, are emerging as a group of promising antimicrobial candidates for combatting AMR due to their rapid and unique antimicrobial action. Decades of research have advanced our understanding of the relationship between the physicochemical properties of HDPs and their underlying antimicrobial and non-antimicrobial functions, including immunomodulatory, anti-biofilm, and wound healing properties. However, the mission of translating novel HDP-derived molecules from bench to bedside has yet to be fully accomplished, primarily attributed to their intricate structure-activity relationship, toxicity, instability in host and microbial environment, lack of correlation between in vitro and in vivo efficacies, and dwindling interest from large pharmaceutical companies. Based on our previous experience and the expanding knowledge gleaned from the literature, this review aims to summarize the novel strategies that have been employed to enhance the antimicrobial efficacy, proteolytic stability, and cell selectivity, which are all crucial factors for bench-to-bedside translation of HDP-based treatment. Strategies such as residues substitution with natural and/or unnatural amino acids, hybridization, L-to-D heterochiral isomerization, C- and N-terminal modification, cyclization, incorporation with nanoparticles, and "smart design" using artificial intelligence technology, will be discussed. We also provide an overview of HDP-based treatment that are currently in the development pipeline.
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Affiliation(s)
- Darren Shu Jeng Ting
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,Department of Ophthalmology, Queen's Medical Centre, Nottingham, United Kingdom.,Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Roger W Beuerman
- Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Harminder S Dua
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,Department of Ophthalmology, Queen's Medical Centre, Nottingham, United Kingdom
| | - Rajamani Lakshminarayanan
- Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Imran Mohammed
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom
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17
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Majid A, Naz F, Khaskheli MH. Structural Plasticity of EAK-16 Peptide Inducing Vesicle Membrane Leakage. Protein Pept Lett 2020; 27:801-807. [PMID: 32003653 DOI: 10.2174/0929866527666200129141116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/11/2019] [Accepted: 11/30/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ionic complementary peptide EAK-16 has been studies for anticancer drug delivery application. This is a 16 residues, short sequence peptide has ability to trosnform into micro/nanoparticle via self-assembly. However, it is still not clear that how this can bind with cell membrane to induce membrane leakage or delivering their cargo inside cell membrane. OBJECTIVE The main objective of this work was to understand behaviour of secondary structure conformation of peptide in solution and at lipid membrane interfaces and membrane permeability of synthetic ionic complementary peptide EAK-16. The corresponding secondary structure conformation was evaluated. METHODS We performed biophysical investigation to probe the interaction of synthesised ionic complementary peptide (EAK-16) with dimyristoylphospholcholine (DMPC) and dimyristoylphosphoserine (DMPS) membrane interfaces. The folding behaviours of EAK-16 were studied with Circular Dichroism (CD) spectroscopy. Membrane leakage with peptide was confirmed with calcein leakage assay. RESULTS Our finding of this study showed that in aqueous phase EAK-16 was predominantly folded into β-sheets. The temperature could alter the β-sheets. However, in DMPC and DMPS membrane interfaces, EAK-16 adopted helical conformation. EAK-16 has preference in perturbing anionic compared Zwitterionic lipid vesicles. This study proposed that hydrophobic grooves of EAK-16 might be a key in the association with lipid bilayers. Secondly, a charge distribution of ionic residues would also support the orientation at lipid bilayers. This peptide membrane association would facilitate the membrane destabilisation. CONCLUSION This study demonstrated the supporting evidence that EAK-16 could interact with lipid membranes and conforming to helical structure, while the helical conformation induced the lipid membrane leakage. Overall, this study provides a physical rationale that ionic complementary peptide can be a useful tool for designing and development of novel antibiotics and anticancer agents along its previous drug delivery applications.
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Affiliation(s)
- Abdul Majid
- Department of Biochemistry, Shah Abdul Latif University, Khairpur, Pakistan
| | - Farah Naz
- Department of Biochemistry, Shah Abdul Latif University, Khairpur, Pakistan
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18
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Zhang Y, Song W, Li S, Kim DK, Kim JH, Kim JR, Kim I. Facile and scalable synthesis of topologically nanoengineered polypeptides with excellent antimicrobial activities. Chem Commun (Camb) 2020; 56:356-359. [DOI: 10.1039/c9cc08095c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and scalable strategy for the quick library synthesis of linear-, hinged-, star-, and cyclic-polypeptides with broad-spectrum antimicrobial activity has been reported.
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Affiliation(s)
- Yu Zhang
- BK21 PLUS Center for Advanced Chemical Technology
- Department of Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Wenliang Song
- BK21 PLUS Center for Advanced Chemical Technology
- Department of Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Shuwei Li
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan
- Republic of Korea
| | - Dae-Kyoung Kim
- Department of Physiology
- School of Medicine
- Pusan National University
- Yangsan 626-870
- Republic of Korea
| | - Jae Ho Kim
- Department of Physiology
- School of Medicine
- Pusan National University
- Yangsan 626-870
- Republic of Korea
| | - Jung Rae Kim
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan
- Republic of Korea
| | - Il Kim
- BK21 PLUS Center for Advanced Chemical Technology
- Department of Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
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19
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Dong N, Wang C, Li X, Guo Y, Li X. Simplified Head-to-Tail Cyclic Polypeptides as Biomaterial-Associated Antimicrobials with Endotoxin Neutralizing and Anti-Inflammatory Capabilities. Int J Mol Sci 2019; 20:ijms20235904. [PMID: 31775224 PMCID: PMC6928678 DOI: 10.3390/ijms20235904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/15/2019] [Accepted: 11/20/2019] [Indexed: 12/21/2022] Open
Abstract
The therapeutic application of antimicrobial peptides (AMPs), a potential type of peptide-based biomaterial, is impeded by their poor antimicrobial activity and potential cytotoxicity as a lack of understanding of their structure–activity relationships. In order to comprehensively enhance the antibacterial and clinical application potency of AMPs, a rational approach was applied to design amphiphilic peptides, including head-to-tail cyclic, linear and D-proline antimicrobial peptides using the template (IR)nP(IR)nP (n = 1, 2 and 3). Results showed that these amphiphilic peptides demonstrated antimicrobial activity in a size-dependent manner and that cyclic peptide OIR3, which contained three repeating units (IR)3, had greater antimicrobial potency and cell selectivity than liner peptide IR3, DIR3 with D-Pro and gramicidin S (GS). Surface plasmon resonance and endotoxin neutralization assays indicated that OIR3 had significant endotoxin neutralization capabilities, which suggested that the effects of OIR3 were mediated by binding to lipopolysaccharides (LPS). Using fluorescence spectrometry and electron microscopy, we found that OIR3 strongly promoted membrane disruption and thereby induced cell lysis. In addition, an LPS-induced inflammation assay showed that OIR3 inhibited the pro-inflammatory factor TNF-α in RAW264.7 cells. OIR3 was able to reduce oxazolone-induced skin inflammation in allergic dermatitis mouse model via the inhibition of TNF-α, IL-1β and IL-6 mRNA expression. Collectively, the engineered head-to-tail cyclic peptide OIR3 was considerable potential candidate for use as a clinical therapeutic for the treatment of bacterial infections and skin inflammation.
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Affiliation(s)
- Na Dong
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Chensi Wang
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Xinran Li
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Yuming Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
- Correspondence: ; Tel.: +(86-010)-6273-3900
| | - Xiaoli Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Science, Northeast Forestry University, Harbin 150040, China;
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20
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Thery T, Lynch KM, Arendt EK. Natural Antifungal Peptides/Proteins as Model for Novel Food Preservatives. Compr Rev Food Sci Food Saf 2019; 18:1327-1360. [DOI: 10.1111/1541-4337.12480] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 05/17/2019] [Accepted: 07/04/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Thibaut Thery
- School of Food and Nutritional SciencesUniv. College Cork Ireland
| | - Kieran M. Lynch
- School of Food and Nutritional SciencesUniv. College Cork Ireland
| | - Elke K. Arendt
- School of Food and Nutritional SciencesUniv. College Cork Ireland
- Microbiome IrelandUniv. College Cork Ireland
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21
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Kim YJ, Kim JH, Rho JY. Antifungal Activities of Streptomyces blastmyceticus Strain 12-6 Against Plant Pathogenic Fungi. MYCOBIOLOGY 2019; 47:329-334. [PMID: 31565468 PMCID: PMC6758635 DOI: 10.1080/12298093.2019.1635425] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 05/10/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
Streptomyces blastmyceticus strain 12-6 was isolated from a forest soil sample of Cheonan area on the basis of strong antifungal activities against plant pathogenic fungi. Butanol extracts of the cultural filtrates were active against C. acutatum, C. coccodes, C. gloeosporioides, F. oxysporum, and T. roseum. Active fractions were prepared by thin layer chromatography using silica gel plate; 12-6-2 (Rf 0.36), 12-6-3 (Rf 0.44). Scanning electron microscopy showed that the active fractions caused a change in surface texture of fungal spores from smooth surface to wrinkled surface. The lethal effect on the spores of the active fractions varied from 56% to 100%. It was shown that the spores of C. acutatum were more sensitive to the antifungal fractions than the spores of F. oxysporum. Fluorescence staining using TOTO-1 indicated that the antifungal fractions could make the spores more sensitive to the fluorescence dye. Thus, it was suggested that antifungal agents prepared in this study exhibited the antifungal activity by damaging the plasma membrane of both fungal spores and hyphae. Identification of antifungal agents in the active fraction using GC-MS analysis revealed the presence of cyclo-(Leu-Pro) and 9-octadecenamide as major components that have already been known as antifungal substances.
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Affiliation(s)
- Yeon Ju Kim
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, Korea
| | - Jae-heon Kim
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, Korea
| | - Jae-Young Rho
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, Korea
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22
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Zhou Z, Ergene C, Palermo EF. Synthetic mimics of cyclic antimicrobial peptides via templated ring-opening metathesis (TROM). Polym Chem 2019. [DOI: 10.1039/c9py01271k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We utilized a templated ring-opening metathesis (TROM) strategy to synthesize a series of precision macrocyclic olefins, each containing two, three or four repeating units of a cyclooctene with pendant carboxylic acid side chains.
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Affiliation(s)
- Zhe Zhou
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Cansu Ergene
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Edmund F. Palermo
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
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23
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Palmieri G, Tatè R, Gogliettino M, Balestrieri M, Rea I, Terracciano M, Proroga YT, Capuano F, Anastasio A, De Stefano L. Small Synthetic Peptides Bioconjugated to Hybrid Gold Nanoparticles Destroy Potentially Deadly Bacteria at Submicromolar Concentrations. Bioconjug Chem 2018; 29:3877-3885. [PMID: 30352512 DOI: 10.1021/acs.bioconjchem.8b00706] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Synthetic antibacterial peptides are advanced weapons that scientists design and produce to confront current threats of harmful and mortal pathogens, which could affect humans in everyday life. Recently, many small amino acid sequences, greatly efficient in their antibacterial action, have been reported in the literature. To date, only a few synthetic peptides, acting at micromolar or even tenths of micromolar concentrations, are on the market as commercial products, mainly because of their high cost of production. In this context, materials science can provide fundamental help by engineering small synthetic peptides, powered by hybrid gold nanoparticles, which have been found to strongly enhance antimicrobial activity against bacterial infections. Submicromolar concentrations of the 1018K6 peptide, bioconjugated to hybrid polymer-gold nanoparticles, kill almost 100% of pathogen bacteria, such as Listeria and Salmonella genera, paving the way for economically sustainable commercial products based on this synthetic nanocomplex.
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Affiliation(s)
- Gianna Palmieri
- Institute of Biosciences and BioResources, UOS Na , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy.,Materias S.r.l. , Corso N. Protopisani n. 50 , 80146 Naples , Italy
| | - Rosarita Tatè
- Institute of Genetics and Biophysics , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy
| | - Marta Gogliettino
- Institute of Biosciences and BioResources, UOS Na , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy
| | - Marco Balestrieri
- Institute of Biosciences and BioResources, UOS Na , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy
| | - Ilaria Rea
- Institute for Microelectronics and Microsystems , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy
| | - Monica Terracciano
- Institute for Microelectronics and Microsystems , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy.,Materias S.r.l. , Corso N. Protopisani n. 50 , 80146 Naples , Italy
| | - Yolande Therese Proroga
- Department of Food Microbiology , Istituto Zooprofilattico Sperimentale del Mezzogiorno , via della Salute, 2 , 80055 Portici, Naples , Italy
| | - Federico Capuano
- Department of Food Microbiology , Istituto Zooprofilattico Sperimentale del Mezzogiorno , via della Salute, 2 , 80055 Portici, Naples , Italy
| | - Aniello Anastasio
- Department of Veterinary Medicine and Animal Production , University of Naples Federico II , Via Federico Delpino 1 , 80137 Naples , Italy
| | - Luca De Stefano
- Institute for Microelectronics and Microsystems , National Research Council , Via Pietro Castellino 111 , 80131 Naples , Italy.,Materias S.r.l. , Corso N. Protopisani n. 50 , 80146 Naples , Italy
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24
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Bagheri M, Amininasab M, Dathe M. Arginine/Tryptophan-Rich Cyclic α/β-Antimicrobial Peptides: The Roles of Hydrogen Bonding and Hydrophobic/Hydrophilic Solvent-Accessible Surface Areas upon Activity and Membrane Selectivity. Chemistry 2018; 24:14242-14253. [PMID: 29969522 DOI: 10.1002/chem.201802881] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Indexed: 11/08/2022]
Abstract
The bacterial selectivity of an amphiphilic library of small cyclic α/β-tetra-, α/β-penta-, and α/β-hexapeptides rich in arginine/tryptophan (Arg/Trp) residues, which contains asymmetric backbone configurations and differ in hydrophobicity and alternating d,l-amino acids, was investigated against Bacillus subtilis and Escherichia coli. The structural analyses showed that the peptides tend to form assemblies of different shapes. All-l-peptides, especially the most hydrophobic pentamers, were more strongly anti-B. subtilis. With the exception to cyclo(Phe-d-Trp-β3 hArg-Arg-d-Trp) (Phe=phenylalanine), the peptides had no effects on inner membrane of E. coli, but lyzed the lipopolysaccharide layer according to their activity pattern. The activities adversely changed with a decrease in the number of amide intramolecular hydrogen bonds in assemblies of diastereomeric peptides and the ratio of hydrophobic/hydrophilic solvent-accessible surface areas. The remarkable enhanced entropic contribution for the partitioning of the least conformationally constrained cyclo(Trp-d-Phe-β3 hTrp-Arg-d-Arg) sequence into the membranes supported the strong self-assembly behavior, therefore making the peptide less penetrable through the E. coli outer layer.
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Affiliation(s)
- Mojtaba Bagheri
- Peptide Chemistry Laboratory, Institute of Biochemistry and Biophysics, University of Tehran, 16 Azar Street, 14176-14335, Tehran, Iran
| | - Mehriar Amininasab
- Department of cell and molecular Biology, School of Biology, College of Science, University of, Tehran, Iran
| | - Margitta Dathe
- Leibniz institute of molecular pharmacology (FMP), Robert Roessle Street 10, 13125, Berlin, Germany
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Lipkin R, Lazaridis T. Computational studies of peptide-induced membrane pore formation. Philos Trans R Soc Lond B Biol Sci 2018. [PMID: 28630158 DOI: 10.1098/rstb.2016.0219] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A variety of peptides induce pores in biological membranes; the most common ones are naturally produced antimicrobial peptides (AMPs), which are small, usually cationic, and defend diverse organisms against biological threats. Because it is not possible to observe these pores directly on a molecular scale, the structure of AMP-induced pores and the exact sequence of steps leading to their formation remain uncertain. Hence, these questions have been investigated via molecular modelling. In this article, we review computational studies of AMP pore formation using all-atom, coarse-grained, and implicit solvent models; evaluate the results obtained and suggest future research directions to further elucidate the pore formation mechanism of AMPs.This article is part of the themed issue 'Membrane pores: from structure and assembly, to medicine and technology'.
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Affiliation(s)
- Richard Lipkin
- Department of Chemistry, City College of New York, 160 Convent Avenue, New York, NY 10031, USA.,Graduate Program in Chemistry, The Graduate Center, City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| | - Themis Lazaridis
- Department of Chemistry, City College of New York, 160 Convent Avenue, New York, NY 10031, USA
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Güell I, Vilà S, Badosa E, Montesinos E, Feliu L, Planas M. Design, synthesis, and biological evaluation of cyclic peptidotriazoles derived from BPC194 as novel agents for plant protection. Biopolymers 2018; 108. [PMID: 28026016 DOI: 10.1002/bip.23012] [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: 09/27/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 01/17/2023]
Abstract
The search for novel antimicrobial agents to be used for plant protection has prompted us to design analogues incorporating non-natural amino acids. Herein, we designed and synthesized cyclic peptidotriazoles derived from the lead antimicrobial cyclic peptide c(Lys-Lys-Leu3 -Lys-Lys5 -Phe-Lys-Lys-Leu-Gln) (BPC194). In particular, Leu3 and Lys5 were replaced by a triazolyl alanine, a triazolyl norleucine or a triazolyl lysine. These peptides were screened for their antibacterial activity against Xanthomonas axonopodis pv. vesicatoria, Erwinia amylovora, and Pseudomonas syringae pv. syringae, for their hemolysis and for their phytotoxicity. Results showed that the type of triazolyl amino acid and the substituent present at the triazole influenced the antibacterial and hemolytic activities. Moreover, the position of this residue was also crucial for the hemolysis. The lead compounds BPC548 and BPC550 exhibited high antibacterial activity (MIC of 3.1 to 25 μM), low hemolysis (19 and 26% at 375 μM, respectively) and low phytotoxicity. Therefore, these analogues could be used as new leads for the development of effective agents to control pathogenic bacteria responsible for plant diseases of economic importance.
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Affiliation(s)
- Imma Güell
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Sílvia Vilà
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Marta Planas
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
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Freudenthal O, Quilès F, Francius G. Discrepancies between Cyclic and Linear Antimicrobial Peptide Actions on the Spectrochemical and Nanomechanical Fingerprints of a Young Biofilm. ACS OMEGA 2017; 2:5861-5872. [PMID: 30023754 PMCID: PMC6044769 DOI: 10.1021/acsomega.7b00644] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/30/2017] [Indexed: 06/08/2023]
Abstract
Antimicrobial peptides (AMPs) are currently known for their potential as an alternative to conventional antibiotics and new weapons against drug-resistant bacteria and biofilms. In the present work, the mechanism of action of a cyclic (colistin) and a linear (catestatin) AMP on a young E. coli biofilm was deciphered from the molecular to the cellular scale. To this end, infrared spectroscopy (attenuated total reflection-Fourier transform infrared) assisted by chemometric analysis was combined with fluorescence and atomic force microscopies to address the very different behaviors of both AMPs. Indeed, the colistin dramatically damaged the bacterial cell wall and the metabolism even though its action was not homogeneous over the whole bacterial population and repopulation can be observed after peptide removal. Conversely, catestatin did not lead to major damages in the bacterial morphology but its action was homogeneous over the whole bacterial population and the cells were unable to regrow after the peptide treatment. Our results strongly suggested that contrary to the cyclic molecule, the linear one is able to cause irreversible damages in the bacterial membrane concomitantly to a strong impact on the bacterial metabolism.
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Affiliation(s)
- Oona Freudenthal
- Université
de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour
l’Environnement, LCPME,
UMR 7564, Villers-lès-Nancy, F-54600, France
- CNRS,
Laboratoire de Chimie Physique et Microbiologie pour l’Environnement,
LCPME, UMR 7564, Villers-lès-Nancy, F-54600, France
| | - Fabienne Quilès
- Université
de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour
l’Environnement, LCPME,
UMR 7564, Villers-lès-Nancy, F-54600, France
- CNRS,
Laboratoire de Chimie Physique et Microbiologie pour l’Environnement,
LCPME, UMR 7564, Villers-lès-Nancy, F-54600, France
| | - Grégory Francius
- Université
de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour
l’Environnement, LCPME,
UMR 7564, Villers-lès-Nancy, F-54600, France
- CNRS,
Laboratoire de Chimie Physique et Microbiologie pour l’Environnement,
LCPME, UMR 7564, Villers-lès-Nancy, F-54600, France
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Kharche S, Joshi M, Sengupta D, Chattopadhyay A. Membrane-induced organization and dynamics of the N-terminal domain of chemokine receptor CXCR1: insights from atomistic simulations. Chem Phys Lipids 2017; 210:142-148. [PMID: 28939366 DOI: 10.1016/j.chemphyslip.2017.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/13/2017] [Accepted: 09/18/2017] [Indexed: 12/28/2022]
Abstract
The CXC chemokine receptor 1 (CXCR1) is an important member of the G protein-coupled receptor (GPCR) family in which the extracellular N-terminal domain has been implicated in ligand binding and selectivity. The structure of this domain has not yet been elucidated due to its inherent dynamics, but experimental evidence points toward membrane-dependent organization and dynamics. To gain molecular insight into the interaction of the N-terminal domain with the membrane bilayer, we performed a series of microsecond time scale atomistic simulations of the N-terminal domain of CXCR1 in the presence and absence of POPC bilayers. Our results show that the peptide displays a high propensity to adopt a β-sheet conformation in the presence of the membrane bilayer. The interaction of the peptide with the membrane bilayer was found to be transient in our simulations. Interestingly, a scrambled peptide, containing the same residues in a randomly varying sequence, did not exhibit membrane-modulated structural dynamics. These results suggest that sequence-dependent electrostatics, modulated by the membrane, could play an important role in folding of the N-terminal domain. We believe that our results reinforce the emerging paradigm that cellular membranes could be important modulators of function of G protein-coupled receptors such as CXCR1.
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Affiliation(s)
- Shalmali Kharche
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Manali Joshi
- Bioinformatics Center, S.P. Pune University, Ganeshkhind Road, Pune 411 007, India
| | - Durba Sengupta
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India; Academy of Scientific and Innovative Research, New Delhi, India.
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Rational Design of Cyclic Antimicrobial Peptides Based on BPC194 and BPC198. Molecules 2017; 22:molecules22071054. [PMID: 28672817 PMCID: PMC6152393 DOI: 10.3390/molecules22071054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 11/16/2022] Open
Abstract
A strategy for the design of antimicrobial cyclic peptides derived from the lead compounds c(KKLKKFKKLQ) (BPC194) and c(KLKKKFKKLQ) (BPC198) is reported. First, the secondary β-structure of BPC194 and BPC198 was analyzed by carrying out molecular dynamics (MD) simulations. Then, based on the sequence pattern and the β-structure of BPC194 or BPC198, fifteen analogues were designed and synthesized on solid-phase. The best peptides (BPC490, BPC918, and BPC924) showed minimum inhibitory concentration (MIC) values <6.2 μM against Pseudomonas syringae pv. syringae and Xanthomonas axonopodis pv. vesicatoria, and an MIC value of 12.5 to 25 μM against Erwinia amylovora, being as active as BPC194 and BPC198. Interestingly, these three analogues followed the structural pattern defined from the MD simulations of the parent peptides. Thus, BPC490 maintained the parallel alignment of the hydrophilic pairs K¹-K⁸, K²-K⁷, and K⁴-K⁵, whereas BPC918 and BPC924 included the two hydrophilic interactions K³-Q10 and K⁵-K⁸. In short, MD simulations have proved to be very useful for ascertaining the structural features of cyclic peptides that are crucial for their biological activity. Such approaches could be further employed for the development of new antibacterial cyclic peptides.
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Comparison of Linear and Cyclic His-Ala-Val Peptides in Modulating the Blood-Brain Barrier Permeability: Impact on Delivery of Molecules to the Brain. J Pharm Sci 2016; 105:797-807. [PMID: 26869430 DOI: 10.1016/s0022-3549(15)00188-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 10/29/2015] [Accepted: 11/03/2015] [Indexed: 12/11/2022]
Abstract
The aim of this study is to evaluate the effect of peptide cyclization on the blood-brain barrier (BBB) modulatory activity and plasma stability of His-Ala-Val peptides, which are derived from the extracellular 1 domain of human E-cadherin. The activities to modulate the intercellular junctions by linear HAV4 (Ac-SHAVAS-NH2), cyclic cHAVc1 (Cyclo(1,8)Ac-CSHAVASC-NH2), and cyclic cHAVc3 (Cyclo(1,6)Ac-CSHAVC-NH2) were compared in in vitro and in vivo BBB models. Linear HAV4 and cyclic cHAVc1 have the same junction modulatory activities as assessed by in vitro MDCK monolayer model and in situ rat brain perfusion model. In contrast, cyclic cHAVc3 was more effective than linear HAV4 in modulating MDCK cell monolayers and in improving in vivo brain delivery of Gd-DTPA on i.v. administration in Balb/c mice. Cyclic cHAVc3 (t1/2 = 12.95 h) has better plasma stability compared with linear HAV4 (t1/2 = 2.4 h). The duration of the BBB modulation was longer using cHAVc3 (2-4 h) compared with HAV4 (<1 h). Both HAV4 and cHAVc3 peptides also enhanced the in vivo brain delivery of IRdye800cw-PEG (25 kDa) as detected by near IR imaging. The result showed that cyclic cHAVc3 peptide had better activity and plasma stability than linear HAV4 peptide.
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31
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Andreev K, Martynowycz MW, Ivankin A, Huang ML, Kuzmenko I, Meron M, Lin B, Kirshenbaum K, Gidalevitz D. Cyclization Improves Membrane Permeation by Antimicrobial Peptoids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12905-12913. [PMID: 27793068 PMCID: PMC9647730 DOI: 10.1021/acs.langmuir.6b03477] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The peptidomimetic approach has emerged as a powerful tool for overcoming the inherent limitations of natural antimicrobial peptides, where the therapeutic potential can be improved by increasing the selectivity and bioavailability. Restraining the conformational flexibility of a molecule may reduce the entropy loss upon its binding to the membrane. Experimental findings demonstrate that the cyclization of linear antimicrobial peptoids increases their bactericidal activity against Staphylococcus aureus while maintaining high hemolytic concentrations. Surface X-ray scattering shows that macrocyclic peptoids intercalate into Langmuir monolayers of anionic lipids with greater efficacy than for their linear analogues. It is suggested that cyclization may increase peptoid activity by allowing the macrocycle to better penetrate the bacterial cell membrane.
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Affiliation(s)
- Konstantin Andreev
- Department of Physics, Center for Molecular Study of Condensed Soft Matter (μCoSM), Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, 3440 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Michael W. Martynowycz
- Department of Physics, Center for Molecular Study of Condensed Soft Matter (μCoSM), Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, 3440 South Dearborn Street, Chicago, Illinois 60616, United States
- Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Andrey Ivankin
- Department of Physics, Center for Molecular Study of Condensed Soft Matter (μCoSM), Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, 3440 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Mia L. Huang
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Ivan Kuzmenko
- Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
| | - Mati Meron
- The Center for Advanced Radiation Sources (CARS), University of Chicago, Chicago, Illinois 60637, United States
| | - Binhua Lin
- The Center for Advanced Radiation Sources (CARS), University of Chicago, Chicago, Illinois 60637, United States
| | - Kent Kirshenbaum
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - David Gidalevitz
- Department of Physics, Center for Molecular Study of Condensed Soft Matter (μCoSM), Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, 3440 South Dearborn Street, Chicago, Illinois 60616, United States
- Corresponding Author: Fax: (+1) 312-567-8856.
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32
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Palmieri G, Balestrieri M, Proroga YT, Falcigno L, Facchiano A, Riccio A, Capuano F, Marrone R, Neglia G, Anastasio A. New antimicrobial peptides against foodborne pathogens: From in silico design to experimental evidence. Food Chem 2016; 211:546-54. [DOI: 10.1016/j.foodchem.2016.05.100] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 04/19/2016] [Accepted: 05/16/2016] [Indexed: 10/21/2022]
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Oddo A, Thomsen TT, Britt HM, Løbner-Olesen A, Thulstrup PW, Sanderson JM, Hansen PR. Modulation of Backbone Flexibility for Effective Dissociation of Antibacterial and Hemolytic Activity in Cyclic Peptides. ACS Med Chem Lett 2016; 7:741-5. [PMID: 27563396 DOI: 10.1021/acsmedchemlett.5b00400] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 05/24/2016] [Indexed: 12/12/2022] Open
Abstract
Bacterial resistance to antibiotic therapy is on the rise and threatens to evolve into a worldwide emergency: alternative solutions to current therapies are urgently needed. Cationic amphipathic peptides are potent membrane-active agents that hold promise as the next-generation therapy for multidrug-resistant infections. The peptides' behavior upon encountering the bacterial cell wall is crucial, and much effort has been dedicated to the investigation and optimization of this amphipathicity-driven interaction. In this study we examined the interaction of a novel series of nine-membered flexible cyclic AMPs with liposomes mimicking the characteristics of bacterial membranes. Employed techniques included circular dichroism and marker release assays, as well as microbiological experiments. Our analysis was aimed at correlating ring flexibility with their antimicrobial, hemolytic, and membrane activity. By doing so, we obtained useful insights to guide the optimization of cyclic antimicrobial peptides via modulation of their backbone flexibility without loss of activity.
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Affiliation(s)
- Alberto Oddo
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Department of Chemistry, Durham University, South Road, DH1 3LE Durham, United Kingdom
| | - Thomas T. Thomsen
- Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen, Denmark
| | - Hannah M. Britt
- Department of Chemistry, Durham University, South Road, DH1 3LE Durham, United Kingdom
| | - Anders Løbner-Olesen
- Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen, Denmark
| | - Peter W. Thulstrup
- Department of Chemistry, University of Copenhagen, Universitetsparken
5, 2100 Copenhagen, Denmark
| | - John M. Sanderson
- Department of Chemistry, Durham University, South Road, DH1 3LE Durham, United Kingdom
| | - Paul R. Hansen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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Topical delivery of low-cost protein drug candidates made in chloroplasts for biofilm disruption and uptake by oral epithelial cells. Biomaterials 2016; 105:156-166. [PMID: 27521618 DOI: 10.1016/j.biomaterials.2016.07.042] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/27/2016] [Accepted: 07/31/2016] [Indexed: 11/20/2022]
Abstract
Protein drugs (PD) are minimally utilized in dental medicine due to high cost and invasive surgical delivery. There is limited clinical advancement in disrupting virulent oral biofilms, despite their high prevalence in causing dental caries. Poor efficacy of antimicrobials following topical treatments or to penetrate and disrupt formed biofilms is a major challenge. We report an exciting low-cost approach using plant-made antimicrobial peptides (PMAMPs) retrocyclin or protegrin with complex secondary structures (cyclic/hairpin) for topical use to control biofilms. The PMAMPs rapidly killed the pathogen Streptococcus mutans and impaired biofilm formation following a single topical application of tooth-mimetic surface. Furthermore, we developed a synergistic approach using PMAMPs combined with matrix-degrading enzymes to facilitate their access into biofilms and kill the embedded bacteria. In addition, we identified a novel role for PMAMPs in delivering drugs to periodontal and gingival cells, 13-48 folds more efficiently than any other tested cell penetrating peptides. Therefore, PDs fused with protegrin expressed in plant cells could potentially play a dual role in delivering therapeutic proteins to gum tissues while killing pathogenic bacteria when delivered as topical oral formulations or in chewing gums. Recent FDA approval of plant-produced PDs augurs well for clinical advancement of this novel concept.
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35
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Grau-Campistany A, Manresa Á, Pujol M, Rabanal F, Cajal Y. Tryptophan-containing lipopeptide antibiotics derived from polymyxin B with activity against Gram positive and Gram negative bacteria. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:333-43. [DOI: 10.1016/j.bbamem.2015.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/26/2015] [Accepted: 11/18/2015] [Indexed: 12/16/2022]
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Azmi F, Elliott AG, Khalil ZG, Hussein WM, Kavanagh A, Huang JX, Quezada M, Blaskovich MAT, Capon RJ, Cooper MA, Skwarczynski M, Toth I. Self-assembling lipopeptides with a potent activity against Gram-positive bacteria, including multidrug resistant strains. Nanomedicine (Lond) 2015; 10:3359-71. [DOI: 10.2217/nnm.15.137] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: To explore the potential of de novo designed cyclic lipopeptides and its linear counterparts as antibacterial agents. Materials & methods: The lipopeptides were synthesized via solid-phase peptide synthesis and the cyclization was achieved by using succinic acid linker. The antimicrobial activities of the lipopeptides were evaluated in vitro against a variety selection of Gram-negative and Gram-positive bacteria including clinical isolates of multidrug-resistant strains. Results: The synthesized lipopeptides were able to self-assemble into nanoparticles in an aqueous environment, with three exhibiting potent antibacterial activity against Gram-positive bacteria, including clinically relevant multidrug-resistant bacteria. Conclusion: The lead compounds have the potential to be developed as new antibacterials that are effective against Gram-positive bacteria, including multidrug-resistant isolates.
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Affiliation(s)
- Fazren Azmi
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia 4072, Australia
- Faculty of Pharmacy, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Alysha G Elliott
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Zeinab G Khalil
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Waleed M Hussein
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia 4072, Australia
| | - Angela Kavanagh
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Johnny X Huang
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Michelle Quezada
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Mark AT Blaskovich
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Robert J Capon
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Matthew A Cooper
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
| | - Mariusz Skwarczynski
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia 4072, Australia
| | - Istvan Toth
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia 4072, Australia
- Institute for Molecular Bioscience, The University of Queensland, St Lucia 4072, Australia
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4072, Australia
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The effect of glycine replacement with flexible ω-amino acids on the antimicrobial and haemolytic activity of an amphipathic cyclic heptapeptide. Eur J Med Chem 2015; 102:574-81. [DOI: 10.1016/j.ejmech.2015.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/11/2015] [Accepted: 08/13/2015] [Indexed: 12/12/2022]
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38
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Kuan SL, Wang T, Raabe M, Liu W, Lamla M, Weil T. Programming Bioactive Architectures with Cyclic Peptide Amphiphiles. Chempluschem 2015; 80:1347-1353. [PMID: 31973290 DOI: 10.1002/cplu.201500218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Indexed: 01/06/2023]
Abstract
We present a versatile approach for the synthesis of cyclic peptide amphiphiles of the hormone somatostatin (SST) with tunable lipophilic tails to program bioactive nanoarchitectures. A novel bis-alkylation reagent is synthesized that facilitates the functionalization of SST with a thiol anchor. Different hydrophobic moieties are introduced inspired by a biomimetic palmitoylation approach which opens access to cyclic peptide amphiphiles that display rich self-organization and cell membrane interactions.
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Affiliation(s)
- Seah Ling Kuan
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
| | - Tao Wang
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
| | - Marco Raabe
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
| | - Weina Liu
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
| | - Markus Lamla
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
| | - Tanja Weil
- Institute of Organic Chemistry III-Macromolecular Chemistry & Biomaterials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm (Germany)
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Solecki O, Mosbah A, Baudy Floc'h M, Felden B. Converting a Staphylococcus aureus toxin into effective cyclic pseudopeptide antibiotics. ACTA ACUST UNITED AC 2015; 22:329-35. [PMID: 25728268 DOI: 10.1016/j.chembiol.2014.12.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 12/20/2014] [Accepted: 12/29/2014] [Indexed: 12/21/2022]
Abstract
Staphylococcus aureus produces peptide toxins that it uses to respond to environmental cues. We previously characterized PepA1, a peptide toxin from S. aureus, that induces lytic cell death of both bacterial and host cells. That led us to suggest that PepA1 has an antibacterial activity. Here, we demonstrate that exogenously provided PepA1 has activity against both Gram-positive and Gram-negative bacteria. We also see that PepA1 is significantly hemolytic, thus limiting its use as an antibacterial agent. To overcome these limitations, we converted PepA1 into nonhemolytic derivatives. Our most promising derivative is a cyclic heptapseudopeptide with inconsequential toxicity to human cells, enhanced stability in human sera, and sharp antibacterial activity. Mechanistically, linear and helical PepA1 derivatives form pores at the bacterial and erythrocyte surfaces, while the cyclic peptide induces bacterial envelope reorganization, with insignificant action on the erythrocytes. Our work demonstrates that bacterial toxins might be an attractive starting point for antibacterial drug development.
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Affiliation(s)
- Olivia Solecki
- U835 Inserm, Pharmaceutical Biochemistry, 2 Avenue du Professeur Léon Bernard, Rennes University, 35043 Rennes, France
| | - Amor Mosbah
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Rennes University, Beaulieu, 35042 Rennes, France
| | - Michèle Baudy Floc'h
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Rennes University, Beaulieu, 35042 Rennes, France.
| | - Brice Felden
- U835 Inserm, Pharmaceutical Biochemistry, 2 Avenue du Professeur Léon Bernard, Rennes University, 35043 Rennes, France.
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Effect of Lipid Bilayer Composition on Membrane Protein Association. ADVANCES IN PLANAR LIPID BILAYERS AND LIPOSOMES 2015. [DOI: 10.1016/bs.adplan.2015.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Vilà S, Camó C, Figueras E, Badosa E, Montesinos E, Planas M, Feliu L. Solid-Phase Synthesis of Cyclic Lipopeptidotriazoles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Vilà S, Badosa E, Montesinos E, Feliu L, Planas M. A convenient solid-phase strategy for the synthesis of antimicrobial cyclic lipopeptides. Org Biomol Chem 2014; 11:3365-74. [PMID: 23563492 DOI: 10.1039/c3ob40319j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise solid-phase synthesis of cyclic lipopeptides derived from the antimicrobial peptide c(Lys-Lys-Leu-Lys-Lys-Phe-Lys-Lys-Leu-Gln) (BPC194) was accomplished. Three different synthetic routes were explored. Best results were obtained using a protocol that includes as key steps: (i) synthesis of the cyclic peptidyl resin incorporating the Lys residue to be acylated protected at the N(ε)-amino group with an ivDde group, (ii) selective removal of the ivDde group, and (iii) acylation. These compounds were screened for their in vitro growth inhibition of bacterial and fungal phytopathogens and for their cytotoxic effects on eukaryotic cells. A sequence with high antimicrobial activity and low hemolysis was identified, constituting a good candidate for the design of new antimicrobial agents.
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Affiliation(s)
- Sílvia Vilà
- Laboratori d'Innovació en Processos i Productes de Síntesi Orgànica (LIPPSO), Departament de Química, Universitat de Girona, Girona, Spain
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Bacteriocin AS-48 binding to model membranes and pore formation as revealed by coarse-grained simulations. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2524-31. [DOI: 10.1016/j.bbamem.2013.05.036] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 05/24/2013] [Accepted: 05/31/2013] [Indexed: 02/05/2023]
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Gaspar D, Veiga AS, Castanho MARB. From antimicrobial to anticancer peptides. A review. Front Microbiol 2013; 4:294. [PMID: 24101917 PMCID: PMC3787199 DOI: 10.3389/fmicb.2013.00294] [Citation(s) in RCA: 489] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/11/2013] [Indexed: 12/26/2022] Open
Abstract
Antimicrobial peptides (AMPs) are part of the innate immune defense mechanism of many organisms. Although AMPs have been essentially studied and developed as potential alternatives for fighting infectious diseases, their use as anticancer peptides (ACPs) in cancer therapy either alone or in combination with other conventional drugs has been regarded as a therapeutic strategy to explore. As human cancer remains a cause of high morbidity and mortality worldwide, an urgent need of new, selective, and more efficient drugs is evident. Even though ACPs are expected to be selective toward tumor cells without impairing the normal body physiological functions, the development of a selective ACP has been a challenge. It is not yet possible to predict antitumor activity based on ACPs structures. ACPs are unique molecules when compared to the actual chemotherapeutic arsenal available for cancer treatment and display a variety of modes of action which in some types of cancer seem to co-exist. Regardless the debate surrounding the definition of structure-activity relationships for ACPs, great effort has been invested in ACP design and the challenge of improving effective killing of tumor cells remains. As detailed studies on ACPs mechanisms of action are crucial for optimizing drug development, in this review we provide an overview of the literature concerning peptides' structure, modes of action, selectivity, and efficacy and also summarize some of the many ACPs studied and/or developed for targeting different solid and hematologic malignancies with special emphasis on the first group. Strategies described for drug development and for increasing peptide selectivity toward specific cells while reducing toxicity are also discussed.
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Affiliation(s)
- Diana Gaspar
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de LisboaLisbon, Portugal
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Moiset G, Cirac AD, Stuart MCA, Marrink SJ, Sengupta D, Poolman B. Dual action of BPC194: a membrane active peptide killing bacterial cells. PLoS One 2013; 8:e61541. [PMID: 23620763 PMCID: PMC3631201 DOI: 10.1371/journal.pone.0061541] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 03/10/2013] [Indexed: 11/30/2022] Open
Abstract
Membrane active peptides can perturb the lipid bilayer in several ways, such as poration and fusion of the target cell membrane, and thereby efficiently kill bacterial cells. We probe here the mechanistic basis of membrane poration and fusion caused by membrane-active, antimicrobial peptides. We show that the cyclic antimicrobial peptide, BPC194, inhibits growth of Gram-negative bacteria and ruptures the outer and inner membrane at the onset of killing, suggesting that not just poration is taking place at the cell envelope. To simplify the system and to better understand the mechanism of action, we performed Förster resonance energy transfer and cryogenic transmission electron microscopy studies in model membranes and show that the BPC194 causes fusion of vesicles. The fusogenic action is accompanied by leakage as probed by dual-color fluorescence burst analysis at a single liposome level. Atomistic molecular dynamics simulations reveal how the peptides are able to simultaneously perturb the membrane towards porated and fused states. We show that the cyclic antimicrobial peptides trigger both fusion and pore formation and that such large membrane perturbations have a similar mechanistic basis.
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Affiliation(s)
- Gemma Moiset
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - Anna D. Cirac
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
- Institute of Computational Chemistry, University of Girona, Campus Montivili, Girona, Spain
| | - Marc C. A. Stuart
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - Siewert-Jan Marrink
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - Durba Sengupta
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune, India
- * E-mail: (BP); (DS)
| | - Bert Poolman
- Departments of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute (GBB) and Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
- * E-mail: (BP); (DS)
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Li J, Liu S, Lakshminarayanan R, Bai Y, Pervushin K, Verma C, Beuerman RW. Molecular simulations suggest how a branched antimicrobial peptide perturbs a bacterial membrane and enhances permeability. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1828:1112-21. [PMID: 23274275 DOI: 10.1016/j.bbamem.2012.12.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 12/03/2012] [Accepted: 12/18/2012] [Indexed: 11/29/2022]
Abstract
A covalently, branched antimicrobial peptide (BAMP) B2088 demonstrating enhanced antimicrobial effects and without additional toxicity when compared to its linear counterpart, has been developed. Atomistic molecular dynamics simulations have been used to investigate the mode of interaction of B2088 with model bacterial and mammalian membranes. These simulations suggest that both long-range electrostatic interactions and short-range hydrogen bonding play important roles in steering B2088 toward the negatively charged membranes. The reason why B2088 is selective towards the bacterial membrane is postulated to be the greater density of negative charges on the bacterial membrane which enables rapid accumulation of B2088 on the bacterial membrane to a high surface concentration, stabilizing it through excess hydrogen bond formation. The majority of hydrogen bonds are seen between the side chains of the basic residues (Arg or Lys) with the PO4 groups of lipids. In particular, formation of the bidentate hydrogen bonds between the guanidinium group of Arg and PO4 groups are found to be more favorable, both geometrically and energetically. Moreover, the planar gaunidinium group and its hydrophobic character enable the Arg side chains to solvate into the hydrophobic membrane. Structural perturbation of the bacterial membrane is found to be concentration dependent and is significant at higher concentrations of B2088, resulting in a large number of water translocations across the bacterial membrane. These simulations enhance our understanding of the action mechanism of a covalently branched antimicrobial peptide with model membranes and provide practical guidance for the design of new antimicrobial peptides.
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Affiliation(s)
- Jianguo Li
- Singapore Eye Research Institute, Singapore, Singapore
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Montesinos E, Badosa E, Cabrefiga J, Planas M, Feliu L, Bardají E. Antimicrobial Peptides for Plant Disease Control. From Discovery to Application. ACS SYMPOSIUM SERIES 2012. [DOI: 10.1021/bk-2012-1095.ch012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Jordi Cabrefiga
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Marta Planas
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Lidia Feliu
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Eduard Bardají
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
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Cirac AD, Moiset G, Mika JT, Koçer A, Salvador P, Poolman B, Marrink SJ, Sengupta D. The molecular basis for antimicrobial activity of pore-forming cyclic peptides. Biophys J 2011; 100:2422-31. [PMID: 21575576 DOI: 10.1016/j.bpj.2011.03.057] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 03/18/2011] [Accepted: 03/31/2011] [Indexed: 11/29/2022] Open
Abstract
The mechanism of action of antimicrobial peptides is, to our knowledge, still poorly understood. To probe the biophysical characteristics that confer activity, we present here a molecular-dynamics and biophysical study of a cyclic antimicrobial peptide and its inactive linear analog. In the simulations, the cyclic peptide caused large perturbations in the bilayer and cooperatively opened a disordered toroidal pore, 1-2 nm in diameter. Electrophysiology measurements confirm discrete poration events of comparable size. We also show that lysine residues aligning parallel to each other in the cyclic but not linear peptide are crucial for function. By employing dual-color fluorescence burst analysis, we show that both peptides are able to fuse/aggregate liposomes but only the cyclic peptide is able to porate them. The results provide detailed insight on the molecular basis of activity of cyclic antimicrobial peptides.
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Affiliation(s)
- Anna D Cirac
- Department of Biochemistry and Biophysical Chemistry, Groningen Biomolecular Sciences, Netherlands
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