1001
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Haney EF, Straus SK, Hancock REW. Reassessing the Host Defense Peptide Landscape. Front Chem 2019; 7:43. [PMID: 30778385 PMCID: PMC6369191 DOI: 10.3389/fchem.2019.00043] [Citation(s) in RCA: 216] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/15/2019] [Indexed: 12/18/2022] Open
Abstract
Current research has demonstrated that small cationic amphipathic peptides have strong potential not only as antimicrobials, but also as antibiofilm agents, immune modulators, and anti-inflammatories. Although traditionally termed antimicrobial peptides (AMPs) these additional roles have prompted a shift in terminology to use the broader term host defense peptides (HDPs) to capture the multi-functional nature of these molecules. In this review, we critically examined the role of AMPs and HDPs in infectious diseases and inflammation. It is generally accepted that HDPs are multi-faceted mediators of a wide range of biological processes, with individual activities dependent on their polypeptide sequence. In this context, we explore the concept of chemical space as it applies to HDPs and hypothesize that the various functions and activities of this class of molecule exist on independent but overlapping activity landscapes. Finally, we outline several emerging functions and roles of HDPs and highlight how an improved understanding of these processes can potentially be leveraged to more fully realize the therapeutic promise of HDPs.
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Affiliation(s)
- Evan F Haney
- Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
| | - Suzana K Straus
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
| | - Robert E W Hancock
- Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
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1002
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Penkauskas T, Preta G. Biological applications of tethered bilayer lipid membranes. Biochimie 2019; 157:131-141. [DOI: 10.1016/j.biochi.2018.11.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022]
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1003
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Bazina L, Maravić A, Krce L, Soldo B, Odžak R, Popović VB, Aviani I, Primožič I, Šprung M. Discovery of novel quaternary ammonium compounds based on quinuclidine-3-ol as new potential antimicrobial candidates. Eur J Med Chem 2019; 163:626-635. [DOI: 10.1016/j.ejmech.2018.12.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/06/2018] [Accepted: 12/11/2018] [Indexed: 01/18/2023]
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1004
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Camó C, Bonaterra A, Badosa E, Baró A, Montesinos L, Montesinos E, Planas M, Feliu L. Antimicrobial peptide KSL-W and analogues: Promising agents to control plant diseases. Peptides 2019; 112:85-95. [PMID: 30508634 DOI: 10.1016/j.peptides.2018.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 01/08/2023]
Abstract
Recent strong restrictions on the use of pesticides has prompted the search for safer alternatives, being antimicrobial peptides promising candidates. Herein, with the aim of identifying new agents, 15 peptides reported as plant defense elicitors, promiscuous, multifunctional or antimicrobial were selected and tested against six plant pathogenic bacteria of economic importance. Within this set, KSL-W (KKVVFWVKFK-NH2) displayed high antibacterial activity against all the tested pathogens, low hemolysis and low phytotoxicity in tobacco leaves. This peptide was taken as a lead and 49 analogues were designed and synthesized, including N-terminal deletion sequences, peptides incorporating a d-amino acid and lipopeptides. The screening of these sequences revealed that a nine amino acid length was the minimum for activity. The presence of a d-amino acid significantly decreased the hemolysis and endowed KSL-W with the capacity to induce the expression of defense-related genes in tomato plants. The incorporation of an acyl chain led to sequences with high activity against Xanthomonas strains, low hemolysis and phytotoxicity. Therefore, this study demonstrates that KSL-W constitutes an excellent candidate as new agent to control plant diseases and can be considered as a lead to develop derivatives with multifunctional properties, including antimicrobial and plant defense elicitation.
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Affiliation(s)
- Cristina Camó
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain
| | - Anna Bonaterra
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Aina Baró
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Laura Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Marta Planas
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain.
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain.
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1005
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Alghalayini A, Garcia A, Berry T, Cranfield CG. The Use of Tethered Bilayer Lipid Membranes to Identify the Mechanisms of Antimicrobial Peptide Interactions with Lipid Bilayers. Antibiotics (Basel) 2019; 8:antibiotics8010012. [PMID: 30704119 PMCID: PMC6466558 DOI: 10.3390/antibiotics8010012] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 01/29/2023] Open
Abstract
This review identifies the ways in which tethered bilayer lipid membranes (tBLMs) can be used for the identification of the actions of antimicrobials against lipid bilayers. Much of the new research in this area has originated, or included researchers from, the southern hemisphere, Australia and New Zealand in particular. More and more, tBLMs are replacing liposome release assays, black lipid membranes and patch-clamp electrophysiological techniques because they use fewer reagents, are able to obtain results far more quickly and can provide a uniformity of responses with fewer artefacts. In this work, we describe how tBLM technology can and has been used to identify the actions of numerous antimicrobial agents.
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Affiliation(s)
- Amani Alghalayini
- School of Life Science, University of Technology Sydney, Ultimo, NSW 2007, Australia.
| | - Alvaro Garcia
- School of Life Science, University of Technology Sydney, Ultimo, NSW 2007, Australia.
| | - Thomas Berry
- School of Life Science, University of Technology Sydney, Ultimo, NSW 2007, Australia.
| | - Charles G Cranfield
- School of Life Science, University of Technology Sydney, Ultimo, NSW 2007, Australia.
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1006
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Li FF, Brimble MA. Using chemical synthesis to optimise antimicrobial peptides in the fight against antimicrobial resistance. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-0704] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The emergence of multidrug-resistant bacteria has necessitated the urgent need for novel antibacterial agents. Antimicrobial peptides (AMPs), the host-defence molecules of most living organisms, have shown great promise as potential antibiotic candidates due to their multiple mechanisms of action which result in very low or negligible induction of resistance. However, the development of AMPs for clinical use has been limited by their potential toxicity to animal cells, low metabolic stability and high manufacturing cost. Extensive efforts have therefore been directed towards the development of enhanced variants of natural AMPs to overcome these aforementioned limitations. In this review, we present our efforts focused on development of efficient strategies to prepare several recently discovered AMPs including antitubercular peptides. The design and synthesis of more potent and stable AMP analogues with synthetic modifications made to the natural peptides containing glycosylated residues or disulfide bridges are described.
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Affiliation(s)
- Freda F. Li
- School of Chemical Sciences, The University of Auckland , 23 Symonds Street , Auckland 1010 , New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences, The University of Auckland , 23 Symonds Street , Auckland 1010 , New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery , 3 Symonds Street , Auckland 1010 , New Zealand
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1007
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Ghosh C, Sarkar P, Issa R, Haldar J. Alternatives to Conventional Antibiotics in the Era of Antimicrobial Resistance. Trends Microbiol 2019; 27:323-338. [PMID: 30683453 DOI: 10.1016/j.tim.2018.12.010] [Citation(s) in RCA: 357] [Impact Index Per Article: 71.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 11/30/2018] [Accepted: 12/19/2018] [Indexed: 02/07/2023]
Abstract
As more antibiotics are rendered ineffective by drug-resistant bacteria, focus must be shifted towards alternative therapies for treating infections. Although several alternatives already exist in nature, the challenge is to implement them in clinical use. Advancements within biotechnology, genetic engineering, and synthetic chemistry have opened up new avenues towards the search for therapies that can substitute for antibiotics. This review provides an introduction to the various promising approaches that have been adopted in this regard. Whilst the use of bacteriophages and antibodies has been partly implemented, other promising strategies, such as probiotics, lysins, and antimicrobial peptides, are in various stages of development. Propitious concepts such as genetically modified phages, antibacterial oligonucleotides, and CRISPR-Cas9 are also discussed.
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Affiliation(s)
- Chandradhish Ghosh
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Paramita Sarkar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Rahaf Issa
- Department of Infection, Immunity and Cardiovascular Diseases, The University of Sheffield, Sheffield, UK
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India.
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1008
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Yadav K, Yavvari PS, Pal S, Kumar S, Mishra D, Gupta S, Mitra M, Soni V, Khare N, Sharma P, Srikanth CV, Kapil A, Singh A, Nandicoori VK, Bajaj A. Oral Delivery of Cholic Acid-Derived Amphiphile Helps in Combating Salmonella-Mediated Gut Infection and Inflammation. Bioconjug Chem 2019; 30:721-732. [DOI: 10.1021/acs.bioconjchem.8b00880] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kavita Yadav
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
- Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Prabhu Srinivas Yavvari
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal-462026, Madhya Pradesh, India
| | - Sanjay Pal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
- Kalinga Institute of Industrial Technology, Bhubaneswar-751024, Odisha India,
| | - Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
- Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Deepakkumar Mishra
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
| | - Siddhi Gupta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
| | - Madhurima Mitra
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
| | - Vijay Soni
- National Institute of Immunology, Aruna Asaf Ali
Marg, New Delhi-110067, India
| | - Neha Khare
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
| | - Priyanka Sharma
- Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi-110029, India
| | - Chittur V. Srikanth
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
| | - Arti Kapil
- Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi-110029, India
| | - Archana Singh
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi-110025, India
| | | | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon
Expressway, Faridabad-121001, Haryana, India
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1009
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Rai RK, Angelis AD, Greenwood A, Opella SJ, Cotten ML. Metal-ion Binding to Host Defense Peptide Piscidin 3 Observed in Phospholipid Bilayers by Magic Angle Spinning Solid-state NMR. Chemphyschem 2019; 20:295-301. [PMID: 30471190 PMCID: PMC6494093 DOI: 10.1002/cphc.201800855] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/21/2018] [Indexed: 12/21/2022]
Abstract
Cationic antimicrobial peptides (AMPs) are essential components of the innate immune system. They have attracted interest as novel compounds with the potential to treat infections associated with multi-drug resistant bacteria. In this study, we investigate piscidin 3 (P3), an AMP that was first discovered in the mast cells of hybrid striped bass. Prior studies showed that P3 is less active than its homolog piscidin 1 (P1) against planktonic bacteria. However, P3 has the advantage of being less toxic to mammalian cells and more active on biofilms and persister cells. Both P1 and P3 cross bacterial membranes and co-localize with intracellular DNA but P3 is more condensing to DNA while P1 is more membrane active. Recently, we showed that both peptides coordinate Cu2+ through an amino-terminal copper and nickel (ATCUN) motif. We also demonstrated that the bactericidal effects of P3 are linked to its ability to form radicals that nick DNA in the presence of Cu2+ . Since metal binding and membrane crossing by P3 is biologically important, we apply in this study solid-state NMR spectroscopy to uniformly 13 C-15 N-labeled peptide samples to structurally characterize the ATCUN motif of P3 bound to bilayers and coordinated to Ni2+ and Cu2+ . These experiments are supplemented with density functional theory calculations. Taken together, these studies refine the arrangement of not only the backbone but also side chain atoms of an AMP simultaneously bound to metal ions and phospholipid bilayers.
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Affiliation(s)
- Ratan Kumar Rai
- Department of Chemistry and Biochemistry University of California San Diego La Jolla, California 92093-0307 (USA)
| | - Anna De Angelis
- Department of Chemistry and Biochemistry University of California San Diego La Jolla, California 92093-0307 (USA)
| | - Alexander Greenwood
- Department of Applied Science, Department of Physics The College of William and Mary Williamsburg, VA 23185 (USA), Fax: (757)-221-2050,
| | - Stanley J. Opella
- Department of Chemistry and Biochemistry University of California San Diego La Jolla, California 92093-0307 (USA)
| | - Myriam L. Cotten
- Department of Applied Science, Department of Physics The College of William and Mary Williamsburg, VA 23185 (USA), Fax: (757)-221-2050,
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1010
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Mardirossian M, Sola R, Degasperi M, Scocchi M. Search for Shorter Portions of the Proline‐Rich Antimicrobial Peptide Fragment Bac5(1–25) That Retain Antimicrobial Activity by Blocking Protein Synthesis. ChemMedChem 2019; 14:343-348. [DOI: 10.1002/cmdc.201800734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/03/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Mario Mardirossian
- Department of Life SciencesUniversity of Trieste Via Licio Giorgieri 5 34127 Trieste Italy
| | - Riccardo Sola
- Department of Life SciencesUniversity of Trieste Via Licio Giorgieri 5 34127 Trieste Italy
| | - Margherita Degasperi
- Department of Life SciencesUniversity of Trieste Via Licio Giorgieri 5 34127 Trieste Italy
| | - Marco Scocchi
- Department of Life SciencesUniversity of Trieste Via Licio Giorgieri 5 34127 Trieste Italy
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1011
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Roy S, Ganguly A, Haque M, Ali H. Angiogenic Host Defense Peptide AG-30/5C and Bradykinin B 2 Receptor Antagonist Icatibant Are G Protein Biased Agonists for MRGPRX2 in Mast Cells. THE JOURNAL OF IMMUNOLOGY 2019; 202:1229-1238. [PMID: 30651343 DOI: 10.4049/jimmunol.1801227] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/12/2018] [Indexed: 01/21/2023]
Abstract
AG-30/5C is an angiogenic host defense peptide that activates human mast cells (MC) via an unknown mechanism. Using short hairpin RNA-silenced human MC line LAD2 and stably transfected RBL-2H3 cells, we demonstrate that AG-30/5C induces MC degranulation via Mas-related G protein-coupled receptor X2 (MRGPRX2). Most G protein-coupled receptors signal via parallel and independent pathways mediated by G proteins and β-arrestins. AG-30/5C and compound 48/80 induced similar maximal MC degranulation via MRGPRX2, which was abolished by pertussis toxin. However, compound 48/80 induced a robust β-arrestin activation as determined by transcriptional activation following arrestin translocation (Tango), but AG-30/5C did not. Overnight culture of MC with compound 48/80 resulted in reduced cell surface MRGPRX2 expression, and this was associated with a significant decrease in subsequent MC degranulation in response to compound 48/80 or AG-30/5C. However, AG-30/5C pretreatment had no effect on cell surface MRGPRX2 expression or degranulation in response to compound 48/80 or AG-30/5C. Icatibant, a bradykinin B2 receptor antagonist, promotes MC degranulation via MRGPRX2 and causes pseudoallergic drug reaction. Icatibant caused MC degranulation via a pertussis toxin-sensitive G protein but did not activate β-arrestin. A screen of the National Institutes of Health Clinical Collection library led to the identification of resveratrol as an inhibitor of MRGPRX2. Resveratrol inhibited compound 48/80-induced Tango and MC degranulation in response to compound 48/80, AG-30/5C, and Icatibant. This study demonstrates the novel finding that AG-30/5C and Icatibant serve as G protein-biased agonists for MRGPRX2, but compound 48/80 signals via both G protein and β-arrestin with distinct differences in receptor regulation.
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Affiliation(s)
- Saptarshi Roy
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Anirban Ganguly
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Maureen Haque
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Hydar Ali
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104
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1012
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Liu Y, Song M, Ding S, Zhu K. Discovery of Linear Low-Cationic Peptides to Target Methicillin-Resistant Staphylococcus aureus in Vivo. ACS Infect Dis 2019; 5:123-130. [PMID: 30372023 DOI: 10.1021/acsinfecdis.8b00230] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The development and rapid spread of multidrug resistant (MDR) bacteria cause severe public crises. New antibacterial compounds are urgently needed to treat bacterial infections. By circumventing the disadvantages of cationic peptides here, we engineered a short, linear, low-cationic peptide bacaucin-1a, which exhibited remarkable antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). Bacaucin-1a was efficient in the prevention of MRSA associated infections in both in vitro and in vivo models with a unique mode of action. The discovery of low-cationic antibiotic candidates will extend our antibiotic pipeline in the fight against antibiotic resistant bacteria.
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Affiliation(s)
- Yuan Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
| | - Meirong Song
- National Center for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
| | - Shuangyang Ding
- National Center for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
| | - Kui Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
- National Center for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian, Beijing, China 100193
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1013
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Discovery and identification of antimicrobial peptides in Sichuan pepper (Zanthoxylum bungeanum Maxim) seeds by peptidomics and bioinformatics. Appl Microbiol Biotechnol 2019; 103:2217-2228. [PMID: 30623204 DOI: 10.1007/s00253-018-09593-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/04/2018] [Accepted: 12/16/2018] [Indexed: 10/27/2022]
Abstract
Antimicrobial peptides (AMPs) have generated growing attention because of the increasing bacterial resistance. However, the discovery and identification of AMPs have proven to be challenging due to the complex purification procedure associated with conventional methods. For the reasons given above, it is necessary to explore more efficient ways to obtain AMPs. We established a new method for discovery and identification of novel AMPs by proteomics and bioinformatics from Zanthoxylum bungeanum Maxim seeds protein hydrolysate directly. This process was initially achieved by employing ultra-performance liquid chromatography-electrospray ionization-mass spectrometry/mass (UPLC-ESI-MS/MS) spectrometry to identify peptides derived from Z. bungeanum Maxim seed protein hydrolysates. Three online servers were introduced to predict potential AMPs. Sixteen potential AMPs ranging from 1.5 to 2.7 kDa were predicted and chemically synthesized, one of which, designated NP-6, inhibited activity against all the tested strains according to antimicrobial assay. Time-killing assay indicated that NP-6 could quickly kill almost all the Escherichia coli within 180 min and Staphylococcus aureus at 360 min. Moreover, the simulation 3D structure of NP-6 was consisted of α-helix and random coil, and this was verified by circular dichroism (CD) spectra. At last, the scanning electron microscope (SEM) images of E. coli and S. aureus treated by NP-6 demonstrated that NP-6 had a significant effect on bacteria cell morphology. Our findings provide an efficient approach for discovery of AMPs, and Z. bungeanum Maxim seeds may be a nature resource to extract antimicrobial agents.
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1014
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Costa F, Teixeira C, Gomes P, Martins MCL. Clinical Application of AMPs. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1117:281-298. [PMID: 30980363 DOI: 10.1007/978-981-13-3588-4_15] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Antimicrobial peptides (AMPs) have been described as one of the most promising compounds able to address one of the main health threats of the twenty-first century that is the continuous rise of multidrug-resistant microorganisms. However, despite the clear advantages of AMPs as a new class of antimicrobials, such as broad spectrum of activity, high selectivity, low toxicity and low propensity to induce resistance, only a small fraction of AMPs reported thus far have been able to successfully complete all phases of clinical trials and become accessible to patients. This is mainly related to the low bioavailability and still somewhat expensive production of AMP along with regulatory obstacles. This chapter offers an overview of selected AMPs that are currently in the market or under clinical trials. Strategies for assisting AMP industrial translation and major regulatory difficulties associated with AMP approval for clinical evaluation will be also discussed.
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Affiliation(s)
- Fabíola Costa
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Cátia Teixeira
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Paula Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - M Cristina L Martins
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal. .,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.
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1015
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Selectivity of Antimicrobial Peptides: A Complex Interplay of Multiple Equilibria. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1117:175-214. [DOI: 10.1007/978-981-13-3588-4_11] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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1016
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Sinha R, Shukla P. Antimicrobial Peptides: Recent Insights on Biotechnological Interventions and Future Perspectives. Protein Pept Lett 2019; 26:79-87. [PMID: 30370841 PMCID: PMC6416458 DOI: 10.2174/0929866525666181026160852] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 12/15/2022]
Abstract
With the unprecedented rise of drug-resistant pathogens, particularly antibiotic-resistant bacteria, and no new antibiotics in the pipeline over the last three decades, the issue of antimicrobial resistance has emerged as a critical public health threat. Antimicrobial Peptides (AMP) have garnered interest as a viable solution to this grave issue and are being explored for their potential antimicrobial applications. Given their low bioavailability in nature, tailoring new AMPs or strategizing approaches for increasing the yield of AMPs, therefore, becomes pertinent. The present review focuses on biotechnological interventions directed towards enhanced AMP synthesis and revisits existing genetic engineering and synthetic biology strategies for production of AMPs. This review further underscores the importance and potential applications of advanced gene editing technologies for the synthesis of novel AMPs in future.
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Affiliation(s)
| | - Pratyoosh Shukla
- Address correspondence to this author at the Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology,
Maharshi Dayanand University, Rohtak-124001, Haryana, India; E-mail:
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1017
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Prince A, Tiwari A, Ror P, Sandhu P, Roy J, Jha S, Mallick B, Akhter Y, Saleem M. Attenuation of neuroblastoma cell growth by nisin is mediated by modulation of phase behavior and enhanced cell membrane fluidity. Phys Chem Chem Phys 2019; 21:1980-1987. [DOI: 10.1039/c8cp06378h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Antimicrobial peptide mediated fluidization of cancer membrane reduces cancer cell growth.
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Affiliation(s)
- Ashutosh Prince
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Anuj Tiwari
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Pankaj Ror
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Padmani Sandhu
- Department of Biosciences & Bioengineering
- Indian Institute of Technology
- Bombay
- India
| | - Jyoti Roy
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Suman Jha
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Bibekanand Mallick
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Yusuf Akhter
- Department of Biotechnology
- Babasaheb Bhimrao Ambedkar University (Central University)
- Lucknow
- India
| | - Mohammed Saleem
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
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1018
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Lee MR, Raman N, Ortiz-Bermúdez P, Lynn DM, Palecek SP. 14-Helical β-Peptides Elicit Toxicity against C. albicans by Forming Pores in the Cell Membrane and Subsequently Disrupting Intracellular Organelles. Cell Chem Biol 2018; 26:289-299.e4. [PMID: 30581136 DOI: 10.1016/j.chembiol.2018.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 09/16/2018] [Accepted: 11/01/2018] [Indexed: 12/21/2022]
Abstract
Synthetic peptidomimetics of antimicrobial peptides (AMPs) are promising antimicrobial drug candidates because they promote membrane disruption and exhibit greater structural and proteolytic stability than natural AMPs. We previously reported selective antifungal 14-helical β-peptides, but the mechanism of antifungal toxicity of β-peptides remains unknown. To provide insight into the mechanism, we studied antifungal β-peptide binding to artificial membranes and living Candida albicans cells. We investigated the ability of β-peptides to interact with and permeate small unilamellar vesicle models of fungal membranes. The partition coefficient supported a pore-mediated mechanism characterized by the existence of a critical β-peptide concentration separating low- and high-partition coefficient regimes. Live cell intracellular tracking of β-peptides showed that β-peptides translocated into the cytoplasm, and then disrupted the nucleus and vacuole sequentially, leading to cell death. This understanding of the mechanisms of antifungal activity will facilitate design and development of peptidomimetic AMPs, including 14-helical β-peptides, for antifungal applications.
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Affiliation(s)
- Myung-Ryul Lee
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI 53706, USA
| | - Namrata Raman
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI 53706, USA
| | - Patricia Ortiz-Bermúdez
- Department of Chemical Engineering, University of Puerto Rico, Mayagüez Campus, Mayagüez, Puerto Rico
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI 53706, USA; Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706, USA.
| | - Sean P Palecek
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI 53706, USA.
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1019
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Torres MDT, Pedron CN, Higashikuni Y, Kramer RM, Cardoso MH, Oshiro KGN, Franco OL, Silva Junior PI, Silva FD, Oliveira Junior VX, Lu TK, de la Fuente-Nunez C. Structure-function-guided exploration of the antimicrobial peptide polybia-CP identifies activity determinants and generates synthetic therapeutic candidates. Commun Biol 2018; 1:221. [PMID: 30534613 PMCID: PMC6286318 DOI: 10.1038/s42003-018-0224-2] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 10/18/2018] [Indexed: 12/20/2022] Open
Abstract
Antimicrobial peptides (AMPs) constitute promising alternatives to classical antibiotics for the treatment of drug-resistant infections, which are a rapidly emerging global health challenge. However, our understanding of the structure-function relationships of AMPs is limited, and we are just beginning to rationally engineer peptides in order to develop them as therapeutics. Here, we leverage a physicochemical-guided peptide design strategy to identify specific functional hotspots in the wasp-derived AMP polybia-CP and turn this toxic peptide into a viable antimicrobial. Helical fraction, hydrophobicity, and hydrophobic moment are identified as key structural and physicochemical determinants of antimicrobial activity, utilized in combination with rational engineering to generate synthetic AMPs with therapeutic activity in a mouse model. We demonstrate that, by tuning these physicochemical parameters, it is possible to design nontoxic synthetic peptides with enhanced sub-micromolar antimicrobial potency in vitro and anti-infective activity in vivo. We present a physicochemical-guided rational design strategy to generate peptide antibiotics.
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Affiliation(s)
- Marcelo D. T. Torres
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Cibele N. Pedron
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Yasutomi Higashikuni
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
| | - Robin M. Kramer
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Marlon H. Cardoso
- Programa de Pós-Gradução em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, Brasília, DF 70297400 Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, DF 71966700 Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Karen G. N. Oshiro
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Octávio L. Franco
- Programa de Pós-Gradução em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, Brasília, DF 70297400 Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, DF 71966700 Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Pedro I. Silva Junior
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP 05503900 Brazil
| | - Fernanda D. Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Vani X. Oliveira Junior
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Timothy K. Lu
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
| | - Cesar de la Fuente-Nunez
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
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1020
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Yasir M, Willcox MDP, Dutta D. Action of Antimicrobial Peptides against Bacterial Biofilms. MATERIALS 2018; 11:ma11122468. [PMID: 30563067 PMCID: PMC6317029 DOI: 10.3390/ma11122468] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 11/30/2018] [Accepted: 12/01/2018] [Indexed: 12/22/2022]
Abstract
Microbes are known to colonize surfaces and form biofilms. These biofilms are communities of microbes encased in a self-produced matrix that often contains polysaccharides, DNA and proteins. Antimicrobial peptides (AMPs) have been used to control the formation and to eradicate mature biofilms. Naturally occurring or synthetic antimicrobial peptides have been shown to prevent microbial colonization of surfaces, to kill bacteria in biofilms and to disrupt the biofilm structure. This review systemically analyzed published data since 1970 to summarize the possible anti-biofilm mechanisms of AMPs. One hundred and sixty-two published reports were initially selected for this review following searches using the criteria ‘antimicrobial peptide’ OR ‘peptide’ AND ‘mechanism of action’ AND ‘biofilm’ OR ‘antibiofilm’ in the databases PubMed; Scopus; Web of Science; MEDLINE; and Cochrane Library. Studies that investigated anti-biofilm activities without describing the possible mechanisms were removed from the analysis. A total of 17 original reports were included which have articulated the mechanism of antimicrobial action of AMPs against biofilms. The major anti-biofilm mechanisms of antimicrobial peptides are: (1) disruption or degradation of the membrane potential of biofilm embedded cells; (2) interruption of bacterial cell signaling systems; (3) degradation of the polysaccharide and biofilm matrix; (4) inhibition of the alarmone system to avoid the bacterial stringent response; (5) downregulation of genes responsible for biofilm formation and transportation of binding proteins.
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Affiliation(s)
- Muhammad Yasir
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia.
| | | | - Debarun Dutta
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia.
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1021
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Affiliation(s)
- Donald E. Fry
- MPA Healthcare Solutions, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, and Department of Surgery, University of New Mexico School of Medicine, Albuquerque, New Mexico
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1022
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Bao K, Yuan W, Ma C, Yu X, Wang L, Hong M, Xi X, Zhou M, Chen T. Modification Targeting the "Rana Box" Motif of a Novel Nigrocin Peptide From Hylarana latouchii Enhances and Broadens Its Potency Against Multiple Bacteria. Front Microbiol 2018; 9:2846. [PMID: 30555431 PMCID: PMC6280737 DOI: 10.3389/fmicb.2018.02846] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 11/05/2018] [Indexed: 11/15/2022] Open
Abstract
Public health is confronting the threat caused by antibiotic resistance and this means new antibacterial strategies must be developed urgently. Antimicrobial peptides (AMPs) have been considered as promising therapeutic candidates against infection in the post-antibiotic era. In this paper, we dismissed the significance of “Rana box” in the natural nigrocin-HL identified from skin secretion of Hylarana latouchii by comparing its activity with nigrocin-HLD without the motif. By substituting the “Rana box” sequence with an amidated phenylalanine residue, the natural peptide was modified into a shorter AMP nigrocin-HLM. Activities and toxicities of these two peptides in vitro and in vivo were compared. As a result, nigrocin-HLM not only displayed significantly increased potency against several representative microbes, but also high activity against the antibiotic-resistant methicillin-resistant S. aureus (MRSA, NCTC 12493 and ATCC43300 and several clinical isolates) as evidenced by markedly reduced minimal inhibitory concentration (MIC), minimal bactericidal concentration (MBC), and minimum biofilm eradication concentration (MBEC). More strikingly, nigrocin-HLM exhibited prominent inhibition against MRSA infection in a pneumonia mice model. In addition, the substitution attenuated the toxicity of nigrocin-HLM as evidenced by precipitously decreased hemolytic and cytotoxic activities in vitro, and acute toxicity to mice in vivo. Taken these results into consideration, nigrocin-HLM should be a promising therapeutic candidate for anti-infection. And in addition to dismiss an indispensable role of “Rana box” in maintaining antimicrobial activity of nigrocin-HL, our data provided an inspired strategy for peptide optimization.
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Affiliation(s)
- Kaifan Bao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.,Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Weiyuan Yuan
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chengbang Ma
- Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Xi Yu
- Nanjing Pharmaceutical Co., Ltd., Nanjing, China
| | - Lei Wang
- Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Min Hong
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xinping Xi
- Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Mei Zhou
- Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Tianbao Chen
- Natural Drug Discovery Group, School of Pharmacy, Faculty of Medicine, Health and Life Sciences, Queen's University Belfast, Belfast, United Kingdom
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1023
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Marine Antimicrobial Peptides: A Promising Source of New Generation Antibiotics and Other Bio-active Molecules. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9789-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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1024
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Chen Q, Li W, Wang J, Qu X, Wang G. Lysozyme-Antimicrobial Peptide Fusion Protein Promotes the Diabetic Wound Size Reduction in Streptozotocin (STZ)-Induced Diabetic Rats. Med Sci Monit 2018; 24:8449-8458. [PMID: 30468157 PMCID: PMC6267428 DOI: 10.12659/msm.912596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background Lysozymes and antibacterial peptides have been confirmed to protect humans against viral and bacterial infection, and accelerate wound healing. The study aimed to evaluate the effect of lysozyme-antimicrobial peptide fusion protein on the diabetic wound size reduction in streptozotocin (STZ)-induced diabetic rats. Material/Methods Diabetic rats were prepared via intraperitoneal injection of STZ, 70 mg/kg. A 2-cm circular incision with full thickness was made on the dorsum skin of the rats for preparation of diabetic wound model. The wounds were treated with the fusion protein or phosphate buffer saline. Results The fusion protein markedly accelerated wound healing, decreased levels of proinflammatory cytokines such as interleukin (IL)-6 and tumor necrosis factor (TNF)-α, lipid peroxide (LPO) content, and expression of cyclooxygenase-2 (COX-2), and increased activities of antioxidant enzyme including superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) in serum, levels of pro-angiogenic cytokines such as vascular endothelial growth factor (VEGF) and intercellular adhesion molecule (ICAM-1), and expression of VEGF, FGF-2, p-ERK, and p-Akt protein in granulation. Conclusions The results of the present study suggested that the fusion protein accelerated wound healing by improving anti-inflammation and antioxidant, and increasing angiogenesis in granulation tissues of diabetic rats.
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Affiliation(s)
- Qingying Chen
- Medical Department, General Hospital of Jinan Military Command, Jinan, Shandong, China (mainland)
| | - Wei Li
- Department of Pathophysiology, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Jia Wang
- Medical Department, General Hospital of Jinan Military Command, Jinan, Shandong, China (mainland)
| | - Xintao Qu
- Department of Bone and Joint Surgery, Jinan Central Affiliated Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Guoguang Wang
- Department of Pathophysiology, Wannan Medical College, Wuhu, Anhui, China (mainland)
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1025
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Rozenbaum RT, Su L, Umerska A, Eveillard M, Håkansson J, Mahlapuu M, Huang F, Liu J, Zhang Z, Shi L, van der Mei HC, Busscher HJ, Sharma PK. Antimicrobial synergy of monolaurin lipid nanocapsules with adsorbed antimicrobial peptides against Staphylococcus aureus biofilms in vitro is absent in vivo. J Control Release 2018; 293:73-83. [PMID: 30465823 DOI: 10.1016/j.jconrel.2018.11.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 12/22/2022]
Abstract
Bacterial infections are mostly due to bacteria in their biofilm-mode of growth, while penetrability of antimicrobials into infectious biofilms and increasing antibiotic resistance hamper infection treatment. In-vitro, monolaurin lipid nanocapsules (ML-LNCs) carrying adsorbed antimicrobial peptides (AMPs) displayed synergistic efficacy against planktonic Staphylococcus aureus, but it has not been demonstrated, neither in-vitro nor in-vivo, that such ML-LNCs penetrate into infectious S. aureus biofilms and maintain synergy with AMPs. This study investigates the release mechanism of AMPs from ML-LNCs and possible antimicrobial synergy of ML-LNCs with the AMPs DPK-060 and LL-37 against S. aureus biofilms in-vitro and in a therapeutic, murine, infected wound-healing model. Zeta potentials demonstrated that AMP release from ML-LNCs was controlled by the AMP concentration in suspension. Both AMPs demonstrated no antimicrobial efficacy against four staphylococcal strains in a planktonic mode, while a checkerboard assay showed synergistic antimicrobial efficacy when ML-LNCs and DPK-060 were combined, but not for combinations of ML-LNCs and LL-37. Similar effects were seen for growth reduction of staphylococcal biofilms, with antimicrobial synergy persisting only for ML-LNCs at the highest level of DPK-060 or LL-37 adsorption. Healing of wounds infected with bioluminescent S. aureus Xen36, treated with ML-LNCs alone, was faster when treated with PBS, while AMPs alone did not yield faster wound-healing than PBS. Faster, synergistic wound-healing due to ML-LNCs with adsorbed DPK-060, was absent in-vivo. Summarizing, antimicrobial synergy of ML-LNCs with adsorbed antimicrobial peptides as seen in-vitro, is absent in in-vivo healing of infected wounds, likely because host AMPs adapted the synergistic role of the AMPs added. Thus, conclusions regarding synergistic antimicrobial efficacy, should not be drawn from planktonic data, while even in-vitro biofilm data bear little relevance for the in-vivo situation.
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Affiliation(s)
- René T Rozenbaum
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, P.O Box 196, 9700 AD Groningen, the Netherlands
| | - Linzhu Su
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, P.O Box 196, 9700 AD Groningen, the Netherlands; State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China
| | - Anita Umerska
- MINT, UNIV Angers, INSERM U1066, CNRS 6021, Université Bretagne Loire, Angers, Cedex, France
| | - Matthieu Eveillard
- Equipe ATIP AVENIR, CRCINA, Inserm, Université de Nantes, Université d'Angers, Angers, France
| | - Joakim Håkansson
- Research Institutes of Sweden, Division Biosciences and Materials, Section for Medical Technology, Box 857, 50115 Borås, Sweden
| | - Margit Mahlapuu
- Promore Pharma, Karolinska Institutet Science Park, Fogdevreten 2, SE-171 65, Solna, Sweden
| | - Fan Huang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College, Tianjin 300192, PR China
| | - Jianfeng Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Peking Union Medical College, Tianjin 300192, PR China.
| | - Zhenkun Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, PR China
| | - Henny C van der Mei
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, P.O Box 196, 9700 AD Groningen, the Netherlands
| | - Henk J Busscher
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, P.O Box 196, 9700 AD Groningen, the Netherlands
| | - Prashant K Sharma
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, P.O Box 196, 9700 AD Groningen, the Netherlands.
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1026
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Groo AC, Matougui N, Umerska A, Saulnier P. Reverse micelle-lipid nanocapsules: a novel strategy for drug delivery of the plectasin derivate AP138 antimicrobial peptide. Int J Nanomedicine 2018; 13:7565-7574. [PMID: 30532539 PMCID: PMC6241861 DOI: 10.2147/ijn.s180040] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Introduction Resistance to traditional antibiotics is an increasingly serious problem. Antimicrobial peptides (AMPs) have emerged as a new therapeutic class with great potential against infectious diseases, as they are less prone to induce resistance. Nanotechnology-based delivery strategies can improve the efficiency and stability of AMPs, particularly against proteolytic degradation. Lipid nanocapsules (LNCs) are a new generation of biomimetic nanocarriers and were used in this study to deliver peptides. Methods AMP-loaded reverse micelles (RM) were developed and incorpo rated into LNCs by the phase inversion process and the antimicrobial activity of the AMPs-loaded LNC was evaluated by the minimum inhibitory concentration method. We studied the activity of AMP solutions and AMP-loaded LNCs against Gram-positive and Gram-negative bacterial strains and then evaluated the encapsulation of a new cationic AMP called AP138. Finally, we analyzed the effect of enzymatic attack on AP138 and AP138-RM-LNCs after incubation with trypsin. Results AP138 was efficiently encapsulated in the LNCs (encapsulation efficiency = 97.8% at a drug loading of 0.151%), resulting in protection against degradation by proteases and the preservation of antimicrobial activity against Staphylococcus aureus, including methicillin-resistant Staphylococcus aureus. Conclusion This study shows that RM-LNCs are an excellent candidate system to deliver AMPs.
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Affiliation(s)
- Anne-Claire Groo
- Normandie Univ, UNICAEN, CERMN - EA 4258, FR CNRS 3038 INC3M, SF 4206 ICORE, Caen, France,
| | - Nada Matougui
- Micro & Nanomédecines Translationelles-MINT, UNIV Angers, INSERM U1066, CNRS UMR 6021, UBL Universite Bretagne Loire, Angers, France
| | - Anita Umerska
- Micro & Nanomédecines Translationelles-MINT, UNIV Angers, INSERM U1066, CNRS UMR 6021, UBL Universite Bretagne Loire, Angers, France.,Université de Lorraine, CITHEFOR, Nancy, France
| | - Patrick Saulnier
- Micro & Nanomédecines Translationelles-MINT, UNIV Angers, INSERM U1066, CNRS UMR 6021, UBL Universite Bretagne Loire, Angers, France.,Angers University Hospital, Angers, France
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1027
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Boge L, Hallstensson K, Ringstad L, Johansson J, Andersson T, Davoudi M, Larsson PT, Mahlapuu M, Håkansson J, Andersson M. Cubosomes for topical delivery of the antimicrobial peptide LL-37. Eur J Pharm Biopharm 2018; 134:60-67. [PMID: 30445164 DOI: 10.1016/j.ejpb.2018.11.009] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/07/2018] [Accepted: 11/12/2018] [Indexed: 12/31/2022]
Abstract
In this study, the use of cubosomes for topical delivery of the antimicrobial peptide (AMP) LL-37 was investigated. Topical delivery of AMPs is of great interest for treatment of skin infections caused by bacteria, such as Staphylococcus aureus. AMP containing cubosomes were produced by three different preparation protocols and compared: (i) pre-loading, where LL-37 was incorporated into a liquid crystalline gel, which thereafter was dispersed into nanoparticles, (ii) post-loading, where LL-37 was let to adsorb onto pre-formed cubosomes, and (iii) hydrotrope-loading, where LL-37 was incorporated during the spontaneously formed cubosomes in an ethanol/glycerol monooleate mixture. Particle size and size distribution were analyzed using dynamic light scattering (DLS), liquid crystalline structure by small angle x-ray scattering (SAXS) and release of LL-37 by a fluorescamine assay. Proteolytic protection of LL-37 as well as bactericidal effect after enzyme exposure was investigated. The skin irritation potential of cubosomes was examined by an in vitro epidermis model. Finally, the bacterial killing property of the cubosomes was examined by an ex vivo pig skin wound infection model with Staphylococcus aureus. Data showed that a high loading of LL-37 induced formation of vesicles in case of cubosomes prepared by sonication (pre-loading). No release of LL-37 was observed from the cubosomes, indicating strong association of the peptide to the particles. Proteolysis studies showed that LL-37 was fully protected against enzymatic attacks while associated with the cubosomes, also denoting strong association of the peptide to the particles. As a consequence, bactericidal effect after enzyme exposure remained, compared to pure LL-37 which was subjected to proteolysis. No skin irritation potential of the cubosomes was found, thus enabling for topical administration. The ex vivo wound infection model showed that LL-37 in pre-loaded cubosomes killed bacteria most efficient.
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Affiliation(s)
- Lukas Boge
- RISE Research Institutes of Sweden, Box 857 SE-50115, Borås, Sweden; Department of Chemistry and Chemical Engineering, Applied Chemistry, Chalmers University of Technology, Göteborg, Sweden.
| | | | - Lovisa Ringstad
- RISE Research Institutes of Sweden, Box 857 SE-50115, Borås, Sweden
| | - Jenny Johansson
- RISE Research Institutes of Sweden, Box 857 SE-50115, Borås, Sweden
| | | | - Mina Davoudi
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, Sweden
| | | | - Margit Mahlapuu
- Promore Pharma AB, Karolinska Institutet Science Park, Solna, Sweden; The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Joakim Håkansson
- RISE Research Institutes of Sweden, Box 857 SE-50115, Borås, Sweden
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Applied Chemistry, Chalmers University of Technology, Göteborg, Sweden
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1028
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Zhang Y, Chen T, Pan Z, Sun X, Yin X, He M, Xiao S, Liang H. Theoretical Insights into the Interactions between Star-Shaped Antimicrobial Polypeptides and Bacterial Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13438-13448. [PMID: 30350688 DOI: 10.1021/acs.langmuir.8b02677] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A structurally nanoengineered antimicrobial polypeptide consisting of lysine and valine residues is a new class of antimicrobial agent with superior antibacterial activity against multidrug-resistant bacteria and low toxicity toward mammalian cells. Utilizing coarse-grained models, we studied the interactions of microbial cytoplasmic membranes with polypeptides of either (K2V1)5 (star-KV) or CM15 (star-CM15). Our computational results verify the low toxicity of polypeptides of (K2V1)5 toward the dipalmitoyl phosphatidylcholine bilayer. This low toxicity is demonstrated to originate from weakened hydrophobicity combined with its random coil conformation for (K2V1)5 because of the highly abundant valine residues, compared with the typical antimicrobial peptides, such as CM15. In the interactions with a palmitoyl-oleoyl-phosphatidylethanolamine/palmitoyl-oleoyl-phosphatidylglycerol bilayer, star-KV has greater ability in phase separation and generation of phase boundary defects not only in lipid redistribution but also in lateral dynamic movements, although both star-KV and star-CM15 can extract the phosphatidylglycerol lipids and purify the phosphatidylethanolamine lipids into continuum domains. We suggest that the polypeptide of (K2V1)5 can nondisruptively kill bacteria by hampering bacterial metabolism through reorganizing lipid domain distribution and simultaneously "freezing" lipid movement.
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Affiliation(s)
| | | | - Zhimeng Pan
- School of Computing , University of Utah , Salt Lake City , Utah 84112 , United States
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1029
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Oliveira JTA, Souza PFN, Vasconcelos IM, Dias LP, Martins TF, Van Tilburg MF, Guedes MIF, Sousa DOB. Mo-CBP 3-PepI, Mo-CBP 3-PepII, and Mo-CBP 3-PepIII are synthetic antimicrobial peptides active against human pathogens by stimulating ROS generation and increasing plasma membrane permeability. Biochimie 2018; 157:10-21. [PMID: 30389515 DOI: 10.1016/j.biochi.2018.10.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/23/2018] [Indexed: 12/28/2022]
Abstract
The efficiency of current antimicrobial drugs is noticeably decreasing and thus the development of new treatments is necessary. Natural and synthetic antimicrobial peptides (AMPs) have attracted great attention as promising candidates. Inspired on Mo-CBP3, an antimicrobial protein from Moringa oleifera seeds, we designed and synthesized three AMPs named Mo-CBP3-PepI, Mo-CBP3-PepII, and Mo-CBP3-PepIII. All these three peptides inhibited the growth of Candida species and pathogenic bacteria, penetrate into microbial cells, but none is hemolytic or toxic to human cells. Mo-CBP3-PepIII, particularly, showed the strongest antimicrobial activity against Staphylococcus aureus and Candida species, important human pathogens. Additionally, Mo-CBP3-PepIII did not exhibit hemolytic or toxic activity to mammalian cells, but increased Staphylococcus aureus plasma membrane permeabilization. In Candida parapsilosis, Mo-CBP3-PepIII induced pore formation in the plasma membrane and overproduction of reactive oxygen species. Bioinformatics analysis suggested that Mo-CBP3-PepIII is resistant to pepsin digestion and other proteolytic enzymes present in the intestinal environment, which opens the possibility of oral delivery in future treatments. Together, these results suggest that Mo-CBP3-PepIII has great potential as an antimicrobial agent against the bacterium S. aureus and the fungi C. parapsilosis.
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Affiliation(s)
- Jose T A Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil.
| | - Pedro F N Souza
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil; Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
| | - Ilka M Vasconcelos
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil
| | - Lucas P Dias
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil
| | - Thiago F Martins
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil
| | | | - Maria I F Guedes
- Department of Biotechnology, State University of Ceara (UECE), Ceara, 60741, Brazil
| | - Daniele O B Sousa
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, Ceara, 60451, Brazil
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1030
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Diniz LCL, Miranda A, da Silva PI. Human Antimicrobial Peptide Isolated From Triatoma infestans Haemolymph, Trypanosoma cruzi-Transmitting Vector. Front Cell Infect Microbiol 2018; 8:354. [PMID: 30425969 PMCID: PMC6218679 DOI: 10.3389/fcimb.2018.00354] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/18/2018] [Indexed: 01/01/2023] Open
Abstract
The importance of antimicrobial peptides (AMPs) in relation to the survival of invertebrates is well known. The source and the mode of action on the insects' immune system of these molecules have been described from different perspectives. Insects produce their own AMPs as well as obtain these molecules from various sources, for example by absorption through the intestinal tract, as previously described for Boophilus microplus. Blood-sucking barber bug Triatoma infestans attracts social, economic and medical interest owing to its role in the transmission of Chagas disease. Despite new studies, descriptions of AMPs from this insect have remained elusive. Thus, the aims of this work were to characterize the antimicrobial potential of human fibrinopeptide A (FbPA) obtained from the T. infestans haemolymph and identify its natural source. Therefore, FbPA was isolated from the T. infestans haemolymph through liquid chromatography and identified by mass spectrometry. This peptide exhibited antimicrobial activity against Micrococcus luteus. Native FbPA from human blood and the synthetic FbPA also exhibited antimicrobial activity. The synthetic FbPA was conjugated with fluorescein isothiocyanate and offered to the insects. The haemolymph collected after 72 h exhibited fluorescence at the same wavelength as fluorescein isothiocyanate. Our experiments show that beyond intrinsic AMP production, T. infestans is able to co-opt molecules via internalization and may use them as AMPs for protection.
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Affiliation(s)
- Laura Cristina Lima Diniz
- Special Laboratory of Toxinology, Butantan Institute, São Paulo, Brazil.,Post-Graduation Program Interunits in Biotechnology, USP/IPT/IBU, São Paulo, Brazil
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1031
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Dubovskii PV, Efremov RG. The role of hydrophobic /hydrophilic balance in the activity of structurally flexible vs. rigid cytolytic polypeptides and analogs developed on their basis. Expert Rev Proteomics 2018; 15:873-886. [PMID: 30328726 DOI: 10.1080/14789450.2018.1537786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Being important representatives of various proteomes, membrane-active cationic peptides (CPs) are attractive objects as lead compounds in the design of new antibacterial, anticancer, antifungal, and antiviral molecules. Numerous CPs are found in insect and snake venoms, where many of them reveal cytolytic properties. Due to advances in omics technologies, the number of such peptides is growing dramatically. Areas covered: To understand structure-function relationships for CPs in a living cell, detailed analysis of their hydrophobic/hydrophilic properties is indispensable. We consider two structural classes of membrane-active CPs: latarcins (Ltc) from spider and cardiotoxins (CTXs) from snake venoms. While the former are void off disulfide bonds and conformationally flexible, the latter are structurally rigid and cross-linked with disulfide bonds. In order to elucidate structure-activity relationships behind their antibacterial, anticancer, and hemolytic effects, the properties of these polypeptides are considered on a side-by-side basis. Expert commentary: An ever-increasing number of venom-derived membrane-active polypeptides require new methods for identification of their functional propensities and sequence-based design of novel pharmacological substances. We address these issues considering a number of the designed peptides, based either on Ltc or CTX sequences. Experimental and computer modeling techniques required for these purposes are delineated.
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Affiliation(s)
- Peter V Dubovskii
- a Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry , Russian Academy of Sciences , Moscow , Russia
| | - Roman G Efremov
- a Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry , Russian Academy of Sciences , Moscow , Russia.,b Moscow Institute of Physics and Technology , Dolgoprudnyi , Russian Federation.,c National Research University Higher School of Economics , Moscow , Russia
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1032
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Agrawal P, Raghava GPS. Prediction of Antimicrobial Potential of a Chemically Modified Peptide From Its Tertiary Structure. Front Microbiol 2018; 9:2551. [PMID: 30416494 PMCID: PMC6212470 DOI: 10.3389/fmicb.2018.02551] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/05/2018] [Indexed: 12/14/2022] Open
Abstract
Designing novel antimicrobial peptides is a hot area of research in the field of therapeutics especially after the emergence of resistant strains against the conventional antibiotics. In the past number of in silico methods have been developed for predicting the antimicrobial property of the peptide containing natural residues. This study describes models developed for predicting the antimicrobial property of a chemically modified peptide. Our models have been trained, tested and evaluated on a dataset that contains 948 antimicrobial and 931 non-antimicrobial peptides, containing chemically modified and natural residues. Firstly, the tertiary structure of all peptides has been predicted using software PEPstrMOD. Structure analysis indicates that certain type of modifications enhance the antimicrobial property of peptides. Secondly, a wide range of features was computed from the structure of these peptides using software PaDEL. Finally, models were developed for predicting the antimicrobial potential of chemically modified peptides using a wide range of structural features of these peptides. Our best model based on support vector machine achieve maximum MCC of 0.84 with an accuracy of 91.62% on training dataset and MCC of 0.80 with an accuracy of 89.89% on validation dataset. To assist the scientific community, we have developed a web server called "AntiMPmod" which predicts the antimicrobial property of the chemically modified peptide. The web server is present at the following link (http://webs.iiitd.edu.in/raghava/antimpmod/).
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Affiliation(s)
- Piyush Agrawal
- CSIR-Institute of Microbial Technology, Chandigarh, India.,Center for Computational Biology, Indraprastha Institute of Information Technology, Delhi, New Delhi, India
| | - Gajendra P S Raghava
- Center for Computational Biology, Indraprastha Institute of Information Technology, Delhi, New Delhi, India
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1033
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Wang J, Dou X, Song J, Lyu Y, Zhu X, Xu L, Li W, Shan A. Antimicrobial peptides: Promising alternatives in the post feeding antibiotic era. Med Res Rev 2018; 39:831-859. [PMID: 30353555 DOI: 10.1002/med.21542] [Citation(s) in RCA: 311] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/15/2022]
Abstract
Antimicrobial peptides (AMPs), critical components of the innate immune system, are widely distributed throughout the animal and plant kingdoms. They can protect against a broad array of infection-causing agents, such as bacteria, fungi, parasites, viruses, and tumor cells, and also exhibit immunomodulatory activity. AMPs exert antimicrobial activities primarily through mechanisms involving membrane disruption, so they have a lower likelihood of inducing drug resistance. Extensive studies on the structure-activity relationship have revealed that net charge, hydrophobicity, and amphipathicity are the most important physicochemical and structural determinants endowing AMPs with antimicrobial potency and cell selectivity. This review summarizes the recent advances in AMPs development with respect to characteristics, structure-activity relationships, functions, antimicrobial mechanisms, expression regulation, and applications in food, medicine, and animals.
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Affiliation(s)
- Jiajun Wang
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Xiujing Dou
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Jing Song
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Yinfeng Lyu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Xin Zhu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Lin Xu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Weizhong Li
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Anshan Shan
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
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1034
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Novel Self-Assembled Micelles Based on Cholesterol-Modified Antimicrobial Peptide (DP7) for Safe and Effective Systemic Administration in Animal Models of Bacterial Infection. Antimicrob Agents Chemother 2018; 62:AAC.00368-18. [PMID: 30201818 DOI: 10.1128/aac.00368-18] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/27/2018] [Indexed: 02/05/2023] Open
Abstract
Owing to their broad-spectrum antibacterial properties, multitarget effects, and low drug resistance, antimicrobial peptides (AMPs) have played critical roles in the clinical therapy of drug-resistant bacterial infections. However, the potential hazard of hemolysis following systemic administration has greatly limited their application. Here, we developed a novel AMP derivative, DP7-C, by modifying a formerly identified highly active AMP (DP7) with cholesterol to form an amphiphilic conjugate. The prepared DP7-C easily self-assembled into stable nanomicelles in aqueous solution. The DP7-C micelles showed lower hemolytic activity than their unconjugated counterparts toward human red blood cells and a maximum tolerated dose of 80 mg/kg of body weight in mice via intravenous injection, thus demonstrating improved safety. Moreover, by eliciting specific immunomodulatory activities in immune cells, the DP7-C micelles exerted distinct therapeutic effects in zebrafish and mouse models of infection. In conclusion, DP7-C micelles may be an excellent candidate for the treatment of bacterial infections in the clinic.
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1035
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Synergistic Effect of Combinations Containing EDTA and the Antimicrobial Peptide AA230, an Arenicin-3 Derivative, on Gram-Negative Bacteria. Biomolecules 2018; 8:biom8040122. [PMID: 30360557 PMCID: PMC6315934 DOI: 10.3390/biom8040122] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 01/24/2023] Open
Abstract
The worldwide occurrence of resistance to standard antibiotics and lack of new antibacterial drugs demand new strategies to treat complicated infections. Hence, the aim of this study was to examine the antibacterial activities of an antimicrobial peptide, arenicin-3 derivative AA230, and ethylenediaminetetraacetic acid (EDTA) as well as the two compounds in combination against Gram-negative bacteria. AA230 showed strong antibacterial activity against all of the studied standard strains and clinical isolates, with minimum inhibitory concentrations ranging between 1 µg/mL and 8 µg/mL. AA230 exhibited a bactericidal mode of action. EDTA inhibited the growth of Acinetobacter baumannii at 500–1000 µg/mL. Strains of Acinetobacter baumannii were found to be more susceptible to EDTA than Pseudomonas aeruginosa or Escherichia coli. The antibacterial effects of both AA230 and EDTA were independent of the antibiotic resistance patterns. Indifference to synergistic activity was observed for AA230 and EDTA combinations using checkerboard titration. In time-kill studies, a substantial synergistic interaction between AA230 and EDTA was detected against all of the tested strains. The addition of EDTA enabled a 2–4-fold decrease in the AA230 dose. In conclusion, AA230 could have potential applications in the treatment of infections caused by Gram-negative organisms, and its effect can be potentiated by EDTA.
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1036
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Nicola AM, Albuquerque P, Paes HC, Fernandes L, Costa FF, Kioshima ES, Abadio AKR, Bocca AL, Felipe MS. Antifungal drugs: New insights in research & development. Pharmacol Ther 2018; 195:21-38. [PMID: 30347212 DOI: 10.1016/j.pharmthera.2018.10.008] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The need for better antifungal therapy is commonly accepted in view of the high mortality rates associated with systemic infections, the low number of available antifungal classes, their associated toxicity and the increasing number of infections caused by strains with natural or acquired resistance. The urgency to expand the range of therapeutic options for the treatment of fungal infections has led researchers in recent decades to seek alternative antifungal targets when compared to the conventional ones currently used. Although new potential targets are reported, translating the discoveries from bench to bedside is a long process and most of these drugs fail to reach the patients. In this review, we discuss the development of antifungal drugs focusing on the approach of drug repurposing and the search for novel drugs for classical targets, the most recently described gene targets for drug development, the possibilities of immunotherapy using antibodies, cytokines, therapeutic vaccines and antimicrobial peptides.
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Affiliation(s)
| | - Patrícia Albuquerque
- Faculty of Ceilândia, University of Brasília, Brazil; Graduate Programme in Microbial Biology, University of Brasília, Brazil
| | - Hugo Costa Paes
- Division of Clinical Medicine, University of Brasília Medical School, Brazil
| | - Larissa Fernandes
- Faculty of Ceilândia, University of Brasília, Brazil; Graduate Programme in Microbial Biology, University of Brasília, Brazil
| | - Fabricio F Costa
- Graduate Programme in Genomic Science and Biotechnology, Catholic University of Brasília, Brazil; MATTER, Chicago, IL, USA; Cancer Biology and Epigenomics Program, Ann & Robert Lurie Children's Hospital of Chicago Research Center, Northwestern University's Feinberg School of Medicine, Chicago, Illinois, USA
| | - Erika Seki Kioshima
- Department of Clinical Analysis and Biomedicine, State University of Maringá, Paraná, Brazil
| | - Ana Karina Rodrigues Abadio
- School for Applied Social and Agricultural Sciences, State University of Mato Grosso, Nova Mutum Campus, Mato Grosso, Brazil
| | | | - Maria Sueli Felipe
- Graduate Programme in Genomic Science and Biotechnology, Catholic University of Brasília, Brazil; Department of Cell Biology, Institute of Biological Sciences, University of Brasília, Brazil.
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1037
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Amirkhanov NV, Tikunova NV, Pyshnyi DV. Synthetic Antimicrobial Peptides: I. Antimicrobial Activity of Amphiphilic and Nonamphiphilic Cationic Peptides. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1068162018050035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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1038
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Yadav S, Mahato M, Jha D, Ahmadi Z, Gautam H, Sharma A. Enhanced antibacterial activity of tetramethylguanidinium-conjugated linear polyethylenimine polymers. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1393679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. Yadav
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - M. Mahato
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - D. Jha
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, India
| | - Z. Ahmadi
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - H.K. Gautam
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, India
| | - A.K. Sharma
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
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1039
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Sowińska M, Laskowska A, Guśpiel A, Solecka J, Bochynska-Czyż M, Lipkowski AW, Trzeciak K, Urbanczyk-Lipkowska Z. Bioinspired Amphiphilic Peptide Dendrimers as Specific and Effective Compounds against Drug Resistant Clinical Isolates of E. coli. Bioconjug Chem 2018; 29:3571-3585. [PMID: 30235928 DOI: 10.1021/acs.bioconjchem.8b00544] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Evolution-derived natural compounds have been inspirational for design of numerous pharmaceuticals, e.g., penicillins and tetracyclines. Herein, we present a bioinspired strategy to design peptide dendrimers for the effective therapy of E. coli infections where the selection of appropriate amino acids and the mode of their assembly are based on the information gained from research on membranolytic natural antimicrobial peptides (AMP's). On the molecular level two opposite effects were explored: the effect of multiple positive charges necessary for membrane disintegration was equilibrated by the anchoring role of tryptophanes. Indeed, a series of Trp-terminated dendrimers exhibited high potency against clinical isolates of antibiotic resistant ESBL E. coli strains, stability in human plasma along with very low hemo- and genotoxicity. Investigation of the underlying antimicrobial mechanism indicated that the dendrimers studied at minimal inhibitory concentration showed weak permeability toward membranes. Solid-state 2D NMR studies revealed their presence on and inside the model membranes. Therefore, their biological properties might be explained by targeting of extra- or intracellular receptors. Our results point to a new approach to design novel branched antimicrobials with high therapeutic index.
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Affiliation(s)
- Marta Sowińska
- Institute of Organic Chemistry PAS , Kasprzaka Str. 44/54 , Warsaw 01-224 , Poland
| | - Anna Laskowska
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Adam Guśpiel
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Jolanta Solecka
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Marta Bochynska-Czyż
- Mossakowski Medical Research Centre PAS , Pawinskiego Str. 5 , 02-106 Warsaw , Poland
| | - Andrzej W Lipkowski
- Mossakowski Medical Research Centre PAS , Pawinskiego Str. 5 , 02-106 Warsaw , Poland
| | - Katarzyna Trzeciak
- Institute of Organic Chemistry PAS , Kasprzaka Str. 44/54 , Warsaw 01-224 , Poland.,Centre of Molecular and Macromolecular Studies PAS , Sienkiewicza 112 , 90-363 Lodz , Poland
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1040
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Lakemeyer M, Zhao W, Mandl FA, Hammann P, Sieber SA. Thinking Outside the Box-Novel Antibacterials To Tackle the Resistance Crisis. Angew Chem Int Ed Engl 2018; 57:14440-14475. [PMID: 29939462 DOI: 10.1002/anie.201804971] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Indexed: 12/13/2022]
Abstract
The public view on antibiotics as reliable medicines changed when reports about "resistant superbugs" appeared in the news. While reasons for this resistance development are easily spotted, solutions for re-establishing effective antibiotics are still in their infancy. This Review encompasses several aspects of the antibiotic development pipeline from very early strategies to mature drugs. An interdisciplinary overview is given of methods suitable for mining novel antibiotics and strategies discussed to unravel their modes of action. Select examples of antibiotics recently identified by using these platforms not only illustrate the efficiency of these measures, but also highlight promising clinical candidates with therapeutic potential. Furthermore, the concept of molecules that disarm pathogens by addressing gatekeepers of virulence will be covered. The Review concludes with an evaluation of antibacterials currently in clinical development. Overall, this Review aims to connect select innovative antimicrobial approaches to stimulate interdisciplinary partnerships between chemists from academia and industry.
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Affiliation(s)
- Markus Lakemeyer
- Department of Chemistry, Chair of Organic Chemistry II, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Weining Zhao
- Department of Chemistry, Chair of Organic Chemistry II, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Franziska A Mandl
- Department of Chemistry, Chair of Organic Chemistry II, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Peter Hammann
- R&D Therapeutic Area Infectious Diseases, Sanofi-Aventis (Deutschland) GmbH, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Stephan A Sieber
- Department of Chemistry, Chair of Organic Chemistry II, Center for Integrated Protein Science (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
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1041
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Lakemeyer M, Zhao W, Mandl FA, Hammann P, Sieber SA. Über bisherige Denkweisen hinaus - neue Wirkstoffe zur Überwindung der Antibiotika-Krise. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804971] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Markus Lakemeyer
- Fakultät für Chemie; Lehrstuhl für Organische Chemie II, Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Weining Zhao
- Fakultät für Chemie; Lehrstuhl für Organische Chemie II, Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Franziska A. Mandl
- Fakultät für Chemie; Lehrstuhl für Organische Chemie II, Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
| | - Peter Hammann
- R&D Therapeutic Area Infectious Diseases; Sanofi-Aventis (Deutschland) GmbH; Industriepark Höchst 65926 Frankfurt am Main Deutschland
| | - Stephan A. Sieber
- Fakultät für Chemie; Lehrstuhl für Organische Chemie II, Center for Integrated Protein Science (CIPSM); Technische Universität München; Lichtenbergstraße 4 85747 Garching Deutschland
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1042
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Improving therapeutic potential of antibacterial spider venom peptides: coarse-grain molecular dynamics guided approach. Future Med Chem 2018; 10:2309-2322. [DOI: 10.4155/fmc-2018-0170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: Spider venom is a rich source of antibacterial peptides, whose hemolytic activity is often excessive. Methodology: How to get rid of it? Using latarcins from Lachesana tarabaevi and oxyopinin Oxt 4a from Oxyopes takobius spider venoms we performed coarse-grained molecular dynamics simulations of these peptides in the presence of lipid bilayers, mimicking erythrocyte membranes. This identified hemolytically active fragments within Oxt 4a and latarcins. Then, we synthesized five 20-residue peptides, containing different parts of the Oxt 4a and latarcin-1 sequence, carrying mutations within the identified regions. Conclusion: The antibacterial and hemolytic tests suggested that the three of the synthesized peptides demonstrated substantial decrease in hemolytic activity, retaining, or even exceeding antibacterial potential of the parent peptides.
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1043
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Marsault É. Une nouvelle classe de macromolécules polycationiques à l’assaut des pathogènes multirésistants. Med Sci (Paris) 2018; 34:791-795. [DOI: 10.1051/medsci/2018198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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1044
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Sun T, Zhan B, Zhang W, Qin D, Xia G, Zhang H, Peng M, Li SA, Zhang Y, Gao Y, Lee WH. Carboxymethyl chitosan nanoparticles loaded with bioactive peptide OH-CATH30 benefit nonscar wound healing. Int J Nanomedicine 2018; 13:5771-5786. [PMID: 30310280 PMCID: PMC6165789 DOI: 10.2147/ijn.s156206] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Nonscar wound healing is a desirable treatment for cutaneous wounds worldwide. Peptide OH-CATH30 (OH30) from king cobra can selectively regulate the innate immunity and create an anti-inflammatory micro-environment which might benefit nonscar wound healing. Purpose To overcome the enzymatic digestion and control release of OH30, OH30 encapsulated in carboxymethyl chitosan nanoparticles (CMCS-OH30 NP) were prepared and their effects on wound healing were evaluated. Methods CMCS-OH30 NP were prepared by mild ionic gelation method and properties of the prepared CMCS-OH30 NP were determined by dynamic light scattering. Encapsulation efficiency, stability and release profile of OH30 from prepared CMCS-OH30 NP were determined by HPLC. Cytotoxicity, cell migration and cellular uptake of CMCS-OH30 NP were determined by conventional methods. The effects of prepared CMCS-OH30 NP on the wound healing was investigated by full-thickness excision animal models. Results The release of encapsulated OH30 from prepared CMCS-OH30 NP was maintained for at least 24 h in a controlled manner. CMCSOH30 NP enhanced the cell migration but had no effects on the metabolism and proliferation of keratinocytes. In the full-thickness excision animal models, the CMCS-OH30 NP treatment significantly accelerated the wound healing compared with CMCS or OH30 administration alone. Histopathological examination suggested that CMCS-OH30 NP promoted wound healing by enhancing the granulation tissue formation through the re-epithelialized and neovascularized composition. CMCS-OH30 NP induced a steady anti-inflammatory cytokine IL10 expression but downregulated the expressions of several pro-inflammatory cytokines. Conclusion The prepared biodegradable drug delivery system accelerates the healing and shows better prognosis because of the combined effects of OH30 released from the nanoparticles.
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Affiliation(s)
- Tongyi Sun
- Department of Bioengineering, School of Bioscience and Technology, Weifang Medical University, Weifang 261053, Shandong, China,
| | - Bo Zhan
- Department of Pharmaceutics, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China, .,Key Laboratory of Bioactive Peptide of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China,
| | - Weifen Zhang
- Department of Pharmaceutics, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China,
| | - Di Qin
- Department of Bioengineering, School of Bioscience and Technology, Weifang Medical University, Weifang 261053, Shandong, China,
| | - Guixue Xia
- Department of Pharmaceutics, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China,
| | - Huijie Zhang
- Department of Bioengineering, School of Bioscience and Technology, Weifang Medical University, Weifang 261053, Shandong, China, .,Key Laboratory of Bioactive Peptide of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China,
| | - Meiyu Peng
- Department of Immunology, School of Clinical Medicine, Weifang Medical University, Weifang 261053, Shandong, China
| | - Sheng-An Li
- Key Laboratory of Bioactive Peptide of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China,
| | - Yun Zhang
- Key Laboratory of Bioactive Peptide of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China,
| | - Yuanyuan Gao
- Department of Pharmaceutics, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China,
| | - Wen-Hui Lee
- Department of Bioengineering, School of Bioscience and Technology, Weifang Medical University, Weifang 261053, Shandong, China, .,Key Laboratory of Bioactive Peptide of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China,
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1045
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Hoff EA, Artim CM, Brown JS, Alabi CA. Sensitivity of Antibacterial Activity to Backbone Sequence in Constitutionally Isomeric OligoTEAs. Macromol Biosci 2018; 18:e1800241. [PMID: 30238615 DOI: 10.1002/mabi.201800241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/03/2018] [Indexed: 01/28/2023]
Abstract
Antimicrobial peptides are promising alternatives to traditional antibiotics but their translational potential is limited due to rapid degradation by serum proteases. Recently, a number of peptidomimetics with backbones resistant to proteolysis have been synthesized and their antimicrobial potential evaluated as a function of their hydrophobic to cationic ratio. However, these mimetics also have a fixed backbone thus making it difficult to isolate the effect of backbone hydrophobic composition and sequence. In this work, advantage is taken of the oligothioetheramide (oligoTEA) synthetic strategy that allows for precise control over backbone and pendant group placement to systematically study the effect of backbone hydrophobic sequence while keeping pendant group constant. Biophysical data acquired with a set of constitutional oligoTEA isomers show that backbone hydrophobic sequence, that is, local hydrophobicity, affects the mode of oligoTEA interaction with lipid bilayers. This differential interaction among the constitutionally isomeric oligoTEAs is manifested in their antibacterial activities and points to the possibility of using backbone hydrophobic sequence to tune antibacterial potency and selectivity.
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Affiliation(s)
- Emily A Hoff
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
| | - Christine M Artim
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
| | - Joseph S Brown
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
| | - Christopher A Alabi
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
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1046
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Antimicrobial peptides from C-terminal amphipathic region of E. coli FtsA. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2506-2514. [PMID: 30279152 DOI: 10.1016/j.bbamem.2018.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 09/08/2018] [Accepted: 09/14/2018] [Indexed: 11/22/2022]
Abstract
Antimicrobial peptides constitute an indispensable component of innate immune system in organisms ranging from bacteria to man. Despite this, peptides lag far behind the conventional antibiotics in treating infections. The menace of multidrug-resistant bacteria, however, has revived the antimicrobial peptide research. We reasoned that the membrane-binding regions of bacterial proteins could be purposed to combat them. Here, we identify potent antimicrobial peptides from the C-terminal amphipathic helix of E. coli FtsA protein. The 11 and 13-residue peptides exhibited activity against E. coli, gentamicin-resistant MRSA, and C. albicans. The activity is little affected by the presence of salt and divalent cations. The peptides preferentially bind to the negatively-charged membranes as indicated by tryptophan fluorescence studies. The peptides permeabilize the E. coli outer and inner membranes at very promising concentrations suggesting membrane-disruption as one of the mechanisms of killing.
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1047
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Peptides as Therapeutic Agents for Inflammatory-Related Diseases. Int J Mol Sci 2018; 19:ijms19092714. [PMID: 30208640 PMCID: PMC6163503 DOI: 10.3390/ijms19092714] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/07/2018] [Accepted: 09/09/2018] [Indexed: 01/08/2023] Open
Abstract
Inflammation is a physiological mechanism used by organisms to defend themselves against infection, restoring homeostasis in damaged tissues. It represents the starting point of several chronic diseases such as asthma, skin disorders, cancer, cardiovascular syndrome, arthritis, and neurological diseases. An increasing number of studies highlight the over-expression of inflammatory molecules such as oxidants, cytokines, chemokines, matrix metalloproteinases, and transcription factors into damaged tissues. The treatment of inflammatory disorders is usually linked to the use of unspecific small molecule drugs that can cause undesired side effects. Recently, many efforts are directed to develop alternative and more selective anti-inflammatory therapies, several of them imply the use of peptides. Indeed, peptides demonstrated as elected lead compounds toward several targets for their high specificity as well as recent and innovative synthetic strategies. Several endogenous peptides identified during inflammatory responses showed anti-inflammatory activities by inhibiting, reducing, and/or modulating the expression and activity of mediators. This review aims to discuss the potentialities and therapeutic use of peptides as anti-inflammatory agents in the treatment of different inflammation-related diseases and to explore the importance of peptide-based therapies.
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1048
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Rishi P, Vashist T, Sharma A, Kaur A, Kaur A, Kaur N, Kaur IP, Tewari R. Efficacy of designer K11 antimicrobial peptide (a hybrid of melittin, cecropin A1 and magainin 2) against Acinetobacter baumannii-infected wounds. Pathog Dis 2018; 76:5089976. [DOI: 10.1093/femspd/fty072] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 09/01/2018] [Indexed: 12/31/2022] Open
Affiliation(s)
- Praveen Rishi
- Department of Microbiology, Basic Medical Sciences Block I, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
| | - Tanvi Vashist
- Department of Microbiology, Basic Medical Sciences Block I, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
| | - Avantika Sharma
- Department of Microbial Biotechnology, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
| | - Amrita Kaur
- Department of Microbiology, Basic Medical Sciences Block I, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
| | - Arashdeep Kaur
- Department of Microbiology, Basic Medical Sciences Block I, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
| | - Navneet Kaur
- Department of Microbiology, Basic Medical Sciences Block I, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
- CSIR-Institute of Microbial Technology, Sector-39 A, Chandigarh-160036, India
| | - Indu Pal Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Rupinder Tewari
- Department of Microbial Biotechnology, South Campus, Sector 25, Panjab University, Chandigarh-160014, India
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1049
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Geskovski N, Sazdovska SD, Gjosheva S, Petkovska R, Popovska M, Anastasova L, Mladenovska K, Goracinova K. Rational development of nanomedicines for molecular targeting in periodontal disease. Arch Oral Biol 2018; 93:31-46. [DOI: 10.1016/j.archoralbio.2018.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 05/09/2018] [Accepted: 05/12/2018] [Indexed: 02/06/2023]
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1050
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Discovery of cationic nonribosomal peptides as Gram-negative antibiotics through global genome mining. Nat Commun 2018; 9:3273. [PMID: 30115920 PMCID: PMC6095874 DOI: 10.1038/s41467-018-05781-6] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/25/2018] [Indexed: 01/21/2023] Open
Abstract
The worldwide prevalence of infections caused by antibiotic-resistant Gram-negative bacteria poses a serious threat to public health due to the limited therapeutic alternatives. Cationic peptides represent a large family of antibiotics and have attracted interest due to their diverse chemical structures and potential for combating drug-resistant Gram-negative pathogens. Here, we analyze 7395 bacterial genomes to investigate their capacity for biosynthesis of cationic nonribosomal peptides with activity against Gram-negative bacteria. Applying this approach, we identify two novel compounds (brevicidine and laterocidine) showing bactericidal activities against antibiotic-resistant Gram-negative pathogens, such as Pseudomonas aeruginosa and colistin-resistant Escherichia coli, and an apparently low risk of resistance. The two peptides show efficacy against E. coli in a mouse thigh infection model. These findings may contribute to the discovery and development of Gram-negative antibiotics. Microbial genomes encode enzymes for biosynthesis of many uncharacterized peptides. Here, the authors screen over 7,300 bacterial genomes for potential biosynthesis of cationic non-ribosomal peptides, and identify two novel peptides with activities against antibiotic-resistant Gram-negative pathogens.
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