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Winther AR, Salehian Z, Bøe CA, Nesdal M, Håvarstein LS, Kjos M, Straume D. Decreased susceptibility to viscosin in Streptococcus pneumoniae. Microbiol Spectr 2024; 12:e0062424. [PMID: 38958463 PMCID: PMC11302323 DOI: 10.1128/spectrum.00624-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 05/30/2024] [Indexed: 07/04/2024] Open
Abstract
Growing numbers of infections caused by antibiotic-resistant Streptococcus pneumoniae strains are a major concern for healthcare systems that will require new antibiotics for treatment as well as preventative measures that reduce the number of infections. Lipopeptides are antimicrobial molecules, of which some are used as antibiotics, including the last resort antibiotics daptomycin and polymyxins. Here we have studied the antimicrobial effect of the cyclic lipopeptide viscosin on S. pneumoniae growth and morphology. Most lipopeptides function as surfactants that create pores in membrane layers, which is regarded as their main antimicrobial activity. We show that viscosin can inhibit growth of S. pneumoniae without disintegration of the cytoplasmic membrane. Instead, the cells developed abnormal shapes and misplaced new division sites. The cell wall of these bacteria appeared less dense in electron microscopy images, suggesting that viscosin interfered with normal cell wall synthesis. Corroborating this observation, a luciferase reporter assay was used to show that the two-component systems LiaFSR and CiaRH, which are known to be activated upon cell wall stress, were strongly induced by viscosin. Furthermore, a mutant displaying 1.8-fold decreased susceptibility to viscosin was generated by sequential exposure to increasing concentrations of the lipopeptide. The mutant suffered from significant fitness loss and had mutations in genes involved in fatty acid synthesis, teichoic acid synthesis, and cell wall synthesis as well as transcription and translation. How these mutations might be linked to decreased viscosin susceptibility is discussed.IMPORTANCEStreptococcus pneumoniae is a leading cause of bacterial pneumonia, sepsis, and meningitis in children, and the incidence of infections caused by antibiotic-resistant strains is increasing. Development of new antibiotics is therefore necessary to treat these types of infections in the future. Here, we have studied the activity of the antimicrobial lipopeptide viscosin on S. pneumoniae and show that in addition to having the typical membrane destabilizing activity of lipopeptides, viscosin inhibits pneumococcal growth by obstructing normal cell wall synthesis. This suggests a more specific mode of action than just the surfactant activity. Furthermore, we show that S. pneumoniae does not easily acquire resistance to viscosin, which makes it a promising molecule to explore further, for example, by synthesizing less toxic derivates that can be tested for therapeutic potential.
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Affiliation(s)
- Anja Ruud Winther
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Zhian Salehian
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | | | - Malene Nesdal
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Leiv Sigve Håvarstein
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Morten Kjos
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Daniel Straume
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
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2
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Hernández-Ortiz N, Sánchez-Murcia PA, Gil-Campillo C, Domenech M, Lucena-Agell D, Hortigüela R, Velázquez S, Camarasa MJ, Bustamante N, de Castro S, Menéndez M. Design, synthesis and structure-activity relationship (SAR) studies of an unusual class of non-cationic fatty amine-tripeptide conjugates as novel synthetic antimicrobial agents. Front Pharmacol 2024; 15:1428409. [PMID: 39156106 PMCID: PMC11329928 DOI: 10.3389/fphar.2024.1428409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 07/01/2024] [Indexed: 08/20/2024] Open
Abstract
Cationic ultrashort lipopeptides (USLPs) are promising antimicrobial candidates to combat multidrug-resistant bacteria. Using DICAMs, a newly synthesized family of tripeptides with net charges from -2 to +1 and a fatty amine conjugated to the C-terminus, we demonstrate that anionic and neutral zwitterionic USLPs can possess potent antimicrobial and membrane-disrupting activities against prevalent human pathogens such as Streptococcus pneumoniae and Streptococcus pyogenes. The strongest antimicrobials completely halt bacterial growth at low micromolar concentrations, reduce bacterial survival by several orders of magnitude, and may kill planktonic cells and biofilms. All of them comprise either an anionic or neutral zwitterionic peptide attached to a long fatty amine (16-18 carbon atoms) and show a preference for anionic lipid membranes enriched in phosphatidylglycerol (PG), which excludes electrostatic interactions as the main driving force for DICAM action. Hence, the hydrophobic contacts provided by the long aliphatic chains of their fatty amines are needed for DICAM's membrane insertion, while negative-charge shielding by salt counterions would reduce electrostatic repulsions. Additionally, we show that other components of the bacterial envelope, including the capsular polysaccharide, can influence the microbicidal activity of DICAMs. Several promising candidates with good-to-tolerable therapeutic ratios are identified as potential agents against S. pneumoniae and S. pyogenes. Structural characteristics that determine the preference for a specific pathogen or decrease DICAM toxicity have also been investigated.
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Affiliation(s)
- Noelia Hernández-Ortiz
- Instituto de Química-Física “Blas Cabrera” (IQF), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Pedro A. Sánchez-Murcia
- Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
- Laboratory of Computer-Aided Molecular Design, Division of Medicinal Chemistry, Otto-Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Celia Gil-Campillo
- Instituto de Química-Física “Blas Cabrera” (IQF), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Mirian Domenech
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- Departamento Genética, Fisiología y Microbiología, Facultad Ciencias Biológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - Daniel Lucena-Agell
- Centro de Investigaciones Biológicas Margarita Salas (CIB), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Rafael Hortigüela
- Centro de Investigaciones Biológicas Margarita Salas (CIB), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Sonsoles Velázquez
- Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - María José Camarasa
- Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Noemí Bustamante
- Instituto de Química-Física “Blas Cabrera” (IQF), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Sonia de Castro
- Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Margarita Menéndez
- Instituto de Química-Física “Blas Cabrera” (IQF), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
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3
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Ouyang M, Wu F, Hu C. Efficacy of Short Novel Antimicrobial Peptides in a Mouse Model of Staphylococcus pseudintermedius Skin Infection. Antibiotics (Basel) 2024; 13:508. [PMID: 38927175 PMCID: PMC11200854 DOI: 10.3390/antibiotics13060508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/20/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
As the clinical application of antibiotics for bacterial skin infections in companion animals becomes increasingly prevalent, the issue of bacterial resistance has become more pronounced. Antimicrobial peptides, as a novel alternative to traditional antibiotics, have garnered widespread attention. In our study, synthetic peptides ADD-A and CBD3-ABU were tested against Staphylococcus pseudintermedius skin infections in KM mice. ADD-A was applied topically and through intraperitoneal injection, compared with control groups and treatments including CBD3-ABU, ampicillin sodium, and saline. Wound contraction, bacterial counts and histology were assessed on days 3 and 11 post-infection. ADD-A and ampicillin treatments significantly outperformed saline in wound healing (p < 0.0001 and p < 0.001, respectively). ADD-A also showed a markedly lower bacterial count than ampicillin (p < 0.0001). Histologically, ADD-A-applied wounds had better epidermal continuity and a thicker epidermis than normal, with restored follicles and sebaceous glands. ADD-A's effectiveness suggests it as a potential alternative to antibiotics for treating skin infections in animals.
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Affiliation(s)
| | | | - Changmin Hu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (M.O.); (F.W.)
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4
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Hu J, Liu N, Fan Q, Gu Y, Chen S, Zhu F, Cheng Y. A Fluorous Peptide Amphiphile with Potent Antimicrobial Activity for the Treatment of MRSA-induced Sepsis and Chronic Wound Infection. Angew Chem Int Ed Engl 2024; 63:e202403140. [PMID: 38393614 DOI: 10.1002/anie.202403140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 02/25/2024]
Abstract
The rising prevalence of global antibiotic resistance evokes the urgent need for novel antimicrobial candidates. Cationic lipopeptides have attracted much attention due to their strong antimicrobial activity, broad-spectrum and low resistance tendency. Herein, a library of fluoro-lipopeptide amphiphiles was synthesized by tagging a series of cationic oligopeptides with a fluoroalkyl tail via a disulfide spacer. Among the lipopeptide candidates, R6F bearing six arginine moieties and a fluorous tag shows the highest antibacterial activity, and it exhibits an interesting fluorine effect as compared to the non-fluorinated lipopeptides. The high antibacterial activity of R6F is attributed to its excellent bacterial membrane permeability, which further disrupts the respiratory chain redox stress and cell wall biosynthesis of the bacteria. By co-assembling with lipid nanoparticles, R6F showed high therapeutic efficacy and minimal adverse effects in the treatment of MRSA-induced sepsis and chronic wound infection. This work provides a novel strategy to design highly potent antibacterial peptide amphiphiles for the treatment of drug-resistant bacterial infections.
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Affiliation(s)
- Jingjing Hu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Nan Liu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Qianqian Fan
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Yunqing Gu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Sijia Chen
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Fang Zhu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
| | - Yiyun Cheng
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China, Dongchuan Road, No. 500
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5
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Yang L, Chen C, Liang T, Hao L, Gu Q, Xu H, Zhao Y, Jiang L, Fan X. Disassembling ability of lipopeptide promotes the antibacterial activity. J Colloid Interface Sci 2023; 649:535-546. [PMID: 37356155 DOI: 10.1016/j.jcis.2023.05.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 05/24/2023] [Accepted: 05/27/2023] [Indexed: 06/27/2023]
Abstract
Lipopeptides have become one of the most potent antibacterial agents, however, there is so far no consensus about the link between their physic-chemical properties and biological activity, in particular their inherent aggregation propensity and antibacterial potency. To this end, we here de novo design a series of lipopeptides (CnH(2n-1)O-(VVKK)2V-NH2), in which an alkyl chain is covalently attached onto the N-terminus of a short cationic peptide sequence with an alternating pattern of hydrophobic VV (Val) and positively charged KK (Lys) motifs. By varying the alkyl chain length (ortho-octanoic acid (C8), lauric acid (C12), and palmitic acid (C16)), the lipopeptides show distinct physicochemical properties and self-assembly behaviors, which have great effect on their antibacterial activities. C8H15O-(VVKK)2V-NH2, which contains the lowest hydrophobicity and surface activity has the lowest antibacterial activity. C12H23O-(VVKK)2V-NH2 and C16H31O-(VVKK)2V-NH2 both have high hydrophobicity and surface activity, and self-assembled into long nanofibers. However, the nanofibers formed by C12H23O-(VVKK)2V-NH2 disassembled by dilution, resulting in its high antibacterial activity via bacterial membrane disruption. Comparatively, the nanofibers formed by C16H31O-(VVKK)2V-NH2 were very stable, which can closely attach on bacterial surface but not permeate bacterial membrane, leading to its low antibacterial activity. Thus, the stability other than the morphologies of lipopeptides' nanostructures contribute to their antibacterial ability. Importantly, this study enhances our understanding of the antibacterial mechanisms of self-assembling lipopeptides that will be helpful in exploring their biomedical applications.
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Affiliation(s)
- Liuxin Yang
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Cuixia Chen
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China.
| | - Tiantian Liang
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Liyun Hao
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Qilong Gu
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Yurong Zhao
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Lixia Jiang
- Hospital of China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Xinglong Fan
- Department of Thoracic Surgery, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao 266035, China.
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6
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Peng J, Lu Q, Yuan L, Zhang H. Synthetic Cationic Lipopeptide Can Effectively Treat Mouse Mastitis Caused by Staphylococcus aureus. Biomedicines 2023; 11:biomedicines11041188. [PMID: 37189805 DOI: 10.3390/biomedicines11041188] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Mastitis caused by Staphylococcus aureus (S. aureus) in dairy cows is one of the most common clinical diseases in dairy cattle. Unfortunately, traditional antibiotic treatment has resulted in the emergence of drug-resistant strains of bacteria, making this disease more difficult to treat. Therefore, novel lipopeptide antibiotics are becoming increasingly important in treating bacterial diseases, and developing novel antibiotics is critical in controlling mastitis in dairy cows. We designed and synthesized three cationic lipopeptides with palmitic acid, all with two positive charges and dextral amino acids. The lipopeptides' antibacterial activity against S. aureus was determined using MIC and scanning electron microscopy. The safety concentration range of lipopeptides for clinical usage was then estimated using the mouse erythrocyte hemolysis assay and CCK8 cytotoxicity. Finally, lipopeptides with high antibacterial activity and minimal cytotoxicity were selected for the treatment experiments regarding mastitis in mice. The observation of histopathological changes, bacterial tissue load and expression of inflammatory factors determined the therapeutic effects of lipopeptides on mastitis in mice. The results showed that all three lipopeptides displayed some antibacterial activity against S. aureus, with C16dKdK having a strong antibacterial impact and being able to treat the mastitis induced by S. aureus infection in mice within a safe concentration range. The findings of this study can be used as a starting point for the development of new medications for the treatment of mastitis in dairy cows.
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Affiliation(s)
- Jie Peng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Qiangsheng Lu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Lvfeng Yuan
- Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou 730000, China
| | - Hecheng Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
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7
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Fa K, Liu H, Li Z, Gong H, Petkov J, Ren Lu J. Acyl Chain Length Tuning Improves Antimicrobial Potency and Biocompatibility of Short Designed Lipopeptides. J Colloid Interface Sci 2022; 630:911-923. [DOI: 10.1016/j.jcis.2022.10.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 10/16/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022]
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8
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In pursuit of next-generation therapeutics: Antimicrobial peptides against superbugs, their sources, mechanism of action, nanotechnology-based delivery, and clinical applications. Int J Biol Macromol 2022; 218:135-156. [PMID: 35868409 DOI: 10.1016/j.ijbiomac.2022.07.103] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 12/12/2022]
Abstract
Antimicrobial peptides (AMPs) attracted attention as potential source of novel antimicrobials. Multi-drug resistant (MDR) infections have emerged as a global threat to public health in recent years. Furthermore, due to rapid emergence of new diseases, there is pressing need for development of efficient antimicrobials. AMPs are essential part of the innate immunity in most living organisms, acting as the primary line of defense against foreign invasions. AMPs kill a wide range of microorganisms by primarily targeting cell membranes or intracellular components through a variety of ways. AMPs can be broadly categorized based on their physico-chemical properties, structure, function, target and source of origin. The synthetic analogues produced either with suitable chemical modifications or with the use of suitable delivery systems are projected to eliminate the constraints of toxicity and poor stability commonly linked with natural AMPs. The concept of peptidomimetics is gaining ground around the world nowadays. Among the delivery systems, nanoparticles are emerging as potential delivery tools for AMPs, amplifying their utility against a variety of pathogens. In the present review, the broad classification of various AMPs, their mechanism of action (MOA), challenges associated with AMPs, current applications, and novel strategies to overcome the limitations have been discussed.
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9
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Fa K, Liu H, Gong H, Zhang L, Liao M, Hu X, Ciumac D, Li P, Webster J, Petkov J, Thomas RK, Lu JR. In-Membrane Nanostructuring of Cationic Amphiphiles Affects Their Antimicrobial Efficacy and Cytotoxicity: A Comparison Study between a De Novo Antimicrobial Lipopeptide and Traditional Biocides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6623-6637. [PMID: 35587380 PMCID: PMC9161444 DOI: 10.1021/acs.langmuir.2c00506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Cationic biocides have been widely used as active ingredients in personal care and healthcare products for infection control and wound treatment for a long time, but there are concerns over their cytotoxicity and antimicrobial resistance. Designed lipopeptides are potential candidates for alleviating these issues because of their mildness to mammalian host cells and their high efficacy against pathogenic microbial membranes. In this study, antimicrobial and cytotoxic properties of a de novo designed lipopeptide, CH3(CH2)12CO-Lys-Lys-Gly-Gly-Ile-Ile-NH2 (C14KKGGII), were assessed against that of two traditional cationic biocides CnTAB (n = 12 and 14), with different critical aggregation concentrations (CACs). C14KKGGII was shown to be more potent against both bacteria and fungi but milder to fibroblast host cells than the two biocides. Biophysical measurements mimicking the main features of microbial and host cell membranes were obtained for both lipid monolayer models using neutron reflection and small unilamellar vesicles (SUVs) using fluorescein leakage and zeta potential changes. The results revealed selective binding to anionic lipid membranes from the lipopeptide and in-membrane nanostructuring that is distinctly different from the co-assembly of the conventional CnTAB. Furthermore, CnTAB binding to the model membranes showed low selectivity, and its high cytotoxicity could be attributed to both membrane lysis and chemical toxicity. This work demonstrates the advantages of the lipopeptides and their potential for further development toward clinical application.
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Affiliation(s)
- Ke Fa
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Huayang Liu
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Haoning Gong
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Lin Zhang
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Mingrui Liao
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Xuzhi Hu
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Daniela Ciumac
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Peixun Li
- ISIS
Neutron Facility, Rutherford Appleton Laboratory,
STFC, Chilton, Didcot, Oxon OX11 0QX, U.K.
| | - John Webster
- ISIS
Neutron Facility, Rutherford Appleton Laboratory,
STFC, Chilton, Didcot, Oxon OX11 0QX, U.K.
| | - Jordan Petkov
- Arc
UK Biocides Ltd, Arxada,
Hexagon Tower, Delaunays Road, Blackley, Manchester M9 8ZS, U.K.
| | - Robert K. Thomas
- Physical
and Theoretical Chemistry, University of
Oxford, South Parks, Oxford OX1
3QZ, U.K.
| | - Jian Ren Lu
- Biological
Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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10
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Peng J, Lu Q, Liu X, Deng Y, Shang T, Yuan L, Zhang H, Zeng Q. Antibacterial effect of synthetic ultra-short lipopeptide on Streptococcus agalactiae and its active on bacterial mastitis in mice. Biochem Biophys Res Commun 2022; 601:153-159. [PMID: 35247769 DOI: 10.1016/j.bbrc.2022.02.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 01/01/2023]
Abstract
Streptococcus agalactiae mastitis is one of the significant threats to the milk industry. The traditional antibiotic treatment method is easy to cause the emergence of resistant strains, and the problem of drug residue is increasingly severe. In this study, we designed and synthesized five lipopeptides. The antibacterial activity of different molecular structure lipopeptides against Streptococcus agalactiae was detected. Furthermore, the mouse mastitis model was established using Streptococcus agalactiae. The lipopeptides with better antibacterial effect were selected for the treatment experiment to evaluate the application value in the treatment of mastitis. The results showed that 4 of the synthesized lipopeptides had specific antibacterial activity. SLP3 and SLP4 have an excellent antibacterial effect and can treat murine mastitis caused by Streptococcus agalactiae infection within the safe concentration range. The results of this study can provide an excellent experimental basis for new antibiotics and clinical application in the treatment of dairy cow mastitis.
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Affiliation(s)
- Jie Peng
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China.
| | - Qiangsheng Lu
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
| | - Xuming Liu
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
| | - Yuanjie Deng
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
| | - Tiantian Shang
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
| | - Lvfeng Yuan
- Lanzhou Veterinary Research Institute of the Chinese Academy of Agricultural Sciences, Gansu, PR China
| | - Hecheng Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
| | - Qiaoying Zeng
- College of Veterinary Medicine, Gansu Agricultural University, Gansu, PR China
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11
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Ji F, Zhao Y, Jiang F, Shang D. Membrane mechanism of temporin-1CEc, an antimicrobial peptide isolated from the skin secretions of Rana chensinensis, and its systemic analogs. Bioorg Chem 2021; 119:105544. [PMID: 34953322 DOI: 10.1016/j.bioorg.2021.105544] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/29/2021] [Accepted: 12/04/2021] [Indexed: 12/15/2022]
Abstract
Antimicrobial peptides (AMPs) are new and powerful target molecules in the development of new antibacterial agents. Temporin-1CEc, a natural peptide isolated and purified from the skin secretions of the Chinese brown frog Rana chensinensis, exhibits low or no antibacterial activity against gram-negative and gram-positive bacteria, which limits its potential therapeutic use; however, it displays low hemolysis to human erythrocytes. Here, a series of temporin-1CEc analogs was designed and synthesized by amino acid residue substitutions based on cationicity, hydrophobicity, amphipathicity and secondary structure to understand the structure-activity relationships of this peptide in depth. The results showed that all of the analogs, except for 2K and 4K, had significantly improved antibacterial activity against the tested standard bacterial strains and multidrug-resistant bacterial strains compared to temporin-1CEc. 2K2L and 2K4L, but not 4K2L and 4K4L, showed the strongest antibacterial activity compared with their parent peptides 2K and 4K, suggesting that peptide hydrophobicity plays a more important role in antibacterial activity than cationicity for this series of AMPs. However, the antibacterial activity of the 6 Trp-containing analogs of 2K4L decreased with a further increase in hydrophobicity based on the results of 2K4L, indicating that it is more important to balance cationicity and hydrophobicity. Moreover, an increase in AMP hydrophobicity led to hemolysis. Notably, all of the peptides adopted α-helical structures in 50% trifluoroethanol/water and 30 mM SDS solutions. 2K2L and 2K4L displayed broad-spectrum antibacterial activity against sensitive and multidrug-resistant bacteria, effectively killing the tested multidrug resistant strain Staphylococcus epidermidis (MRSE1208). 2K2L and 2K4L were able to increase the permeability of the outer and inner membranes by depolarization and disturb the integration of the cytoplasmic membrane of MRSE1208 cells, leading to leakage of its cellular contents. In addition, 2K2L and 2K4L at low concentrations inhibited biofilm formation and degraded mature 1-day-old MRSE1208 biofilms. Notably, 2K2L and 2K4L inhibited the formation of MRSE1208 biofilms at concentrations below its MIC value, suggesting that the peptide may exert an inhibitory effect through not only direct antimicrobial activity but also a biofilm-specific mechanism. Collectively, these results suggest that 2K2L and 2K4L could be effective antibiotics against multidrug-resistant bacterial strains.
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Affiliation(s)
- Fangyu Ji
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Ying Zhao
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Fengquan Jiang
- Department of Clinical Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian 116000, China
| | - Dejing Shang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery, Liaoning Normal University, Dalian 116081, China.
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12
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Boda RLB, Caluag CAM, Dante RAS, Petate AGJ, Candaza HPT, Rivera WL, Jacinto SD, Sabido PMG. Evaluation of
l
‐2,4‐diaminobutyric acid‐based ultrashort cationic lipopeptides as potential antimicrobial and anticancer agents. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ramoncito Luis B. Boda
- Institute of Chemistry, College of Science, University of the Philippines Diliman Quezon City Philippines
- Natural Sciences Research Institute, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Carl Angelo M. Caluag
- Institute of Chemistry, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Rachelle Anne S. Dante
- Institute of Biology, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Art Gersun J. Petate
- Institute of Chemistry, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Hermie Patrice T. Candaza
- Institute of Chemistry, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Windell L. Rivera
- Institute of Biology, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Sonia D. Jacinto
- Institute of Biology, College of Science, University of the Philippines Diliman Quezon City Philippines
| | - Portia Mahal G. Sabido
- Institute of Chemistry, College of Science, University of the Philippines Diliman Quezon City Philippines
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13
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Abstract
Lipopeptides are an exceptional example of amphiphilic molecules that self-assemble into functional structures with applications in the areas of nanotechnology, catalysis or medicinal chemistry. Herein, we report a library of 21 short lipopeptides, together with their supramolecular characterization and antimicrobial activity against both Gram-negative (E. coli) and Gram-positive (S. aureus) strains. This study shows that simple lipoamino acids self-assemble into micellar or vesicular structures, while incorporating dipeptides capable of stablishing hydrogen bonds results in the adoption of advanced fibrilar structures. The self-assembly effect has proven to be key to achieve antimicrobial activity.
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Affiliation(s)
| | - Ignacio Colomer
- IMDEA Nanociencia, Faraday 9, Campus UAM, 28049 Madrid, Spain and Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006, Madrid, Spain.
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14
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Wang C, Hong T, Cui P, Wang J, Xia J. Antimicrobial peptides towards clinical application: Delivery and formulation. Adv Drug Deliv Rev 2021; 175:113818. [PMID: 34090965 DOI: 10.1016/j.addr.2021.05.028] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/14/2021] [Accepted: 05/30/2021] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides hold promise to supplement small molecules antibiotics and combat the multidrug resistant microbes. There are however technical hurdles towards the clinical applications, largely due to the inherent limitations of peptides including stability, cytotoxicity and bioavailability. Here we review recent studies concerning the delivery and formulation of antimicrobial peptides, by categorizing the different strategies as driven by physical interactions or chemical conjugation reactions, and carriers ranging from inorganic based ones (including gold, silver and silica based solid nanoparticles) to organic ones (including micelle, liposome and hydrogel) are covered. Besides, targeted delivery of antimicrobial peptides or using antimicrobial peptides as the targeting moiety, and responsive release of the peptides after delivery are also reviewed. Lastly, strategies towards the increase of oral bioavailability, from both physical or chemical methods, are highlighted. Altogether, this article provides a comprehensive review of the recent progress of the delivery and formulation of antimicrobial peptides towards clinical application.
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Affiliation(s)
- Cheng Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Tingting Hong
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Pengfei Cui
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Jianhao Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.
| | - Jiang Xia
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region.
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15
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Li W, Separovic F, O'Brien-Simpson NM, Wade JD. Chemically modified and conjugated antimicrobial peptides against superbugs. Chem Soc Rev 2021; 50:4932-4973. [PMID: 33710195 DOI: 10.1039/d0cs01026j] [Citation(s) in RCA: 210] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Antimicrobial resistance (AMR) is one of the greatest threats to human health that, by 2050, will lead to more deaths from bacterial infections than cancer. New antimicrobial agents, both broad-spectrum and selective, that do not induce AMR are urgently required. Antimicrobial peptides (AMPs) are a novel class of alternatives that possess potent activity against a wide range of Gram-negative and positive bacteria with little or no capacity to induce AMR. This has stimulated substantial chemical development of novel peptide-based antibiotics possessing improved therapeutic index. This review summarises recent synthetic efforts and their impact on analogue design as well as their various applications in AMP development. It includes modifications that have been reported to enhance antimicrobial activity including lipidation, glycosylation and multimerization through to the broad application of novel bio-orthogonal chemistry, as well as perspectives on the direction of future research. The subject area is primarily the development of next-generation antimicrobial agents through selective, rational chemical modification of AMPs. The review further serves as a guide toward the most promising directions in this field to stimulate broad scientific attention, and will lead to new, effective and selective solutions for the several biomedical challenges to which antimicrobial peptidomimetics are being applied.
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Affiliation(s)
- Wenyi Li
- Melbourne Dental School, Centre for Oral Health Research, University of Melbourne, VIC 3010, Australia. and Bio21 Institute, University of Melbourne, VIC 3010, Australia
| | - Frances Separovic
- Bio21 Institute, University of Melbourne, VIC 3010, Australia and School of Chemistry, University of Melbourne, VIC 3010, Australia
| | - Neil M O'Brien-Simpson
- Melbourne Dental School, Centre for Oral Health Research, University of Melbourne, VIC 3010, Australia. and Bio21 Institute, University of Melbourne, VIC 3010, Australia
| | - John D Wade
- School of Chemistry, University of Melbourne, VIC 3010, Australia and The Florey Institute of Neuroscience and Mental Health, University of Melbourne, VIC 3010, Australia.
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16
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Oliveras À, Moll L, Riesco-Llach G, Tolosa-Canudas A, Gil-Caballero S, Badosa E, Bonaterra A, Montesinos E, Planas M, Feliu L. D-Amino Acid-Containing Lipopeptides Derived from the Lead Peptide BP100 with Activity against Plant Pathogens. Int J Mol Sci 2021; 22:ijms22126631. [PMID: 34205705 PMCID: PMC8233901 DOI: 10.3390/ijms22126631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/19/2022] Open
Abstract
From a previous collection of lipopeptides derived from BP100, we selected 18 sequences in order to improve their biological profile. In particular, analogues containing a D-amino acid at position 4 were designed, prepared, and tested against plant pathogenic bacteria and fungi. The biological activity of these sequences was compared with that of the corresponding parent lipopeptides with all L-amino acids. In addition, the influence of the length of the hydrophobic chain on the biological activity was evaluated. Interestingly, the incorporation of a D-amino acid into lipopeptides bearing a butanoyl or a hexanoyl chain led to less hemolytic sequences and, in general, that were as active or more active than the corresponding all L-lipopeptides. The best lipopeptides were BP475 and BP485, both incorporating a D-Phe at position 4 and a butanoyl group, with MIC values between 0.8 and 6.2 µM, low hemolysis (0 and 24% at 250 µM, respectively), and low phytotoxicity. Characterization by NMR of the secondary structure of BP475 revealed that the D-Phe at position 4 disrupts the α-helix and that residues 6 to 10 are able to fold in an α-helix. This secondary structure would be responsible for the high antimicrobial activity and low hemolysis of this lipopeptide.
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Affiliation(s)
- Àngel Oliveras
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Luís Moll
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Gerard Riesco-Llach
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Arnau Tolosa-Canudas
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Sergio Gil-Caballero
- Serveis Tècnics de Recerca (NMR), Universitat de Girona, Parc Científic i Tecnològic de la UdG, Pic de Peguera 15, 17004 Girona, Spain;
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Anna Bonaterra
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Marta Planas
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
- Correspondence: (M.P.); (L.F.)
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
- Correspondence: (M.P.); (L.F.)
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17
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Shi S, Shen T, Liu Y, Chen L, Wang C, Liao C. Porcine Myeloid Antimicrobial Peptides: A Review of the Activity and Latest Advances. Front Vet Sci 2021; 8:664139. [PMID: 34055951 PMCID: PMC8160099 DOI: 10.3389/fvets.2021.664139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/19/2021] [Indexed: 11/23/2022] Open
Abstract
Traditional antibiotics have made great contributions to human health and animal husbandry since the discovery of penicillin in 1928, but bacterial resistance and drug residues are growing threats to global public health due to the long-term uncontrolled application of antibiotics. There is a critical need to develop new antimicrobial drugs to replace antibiotics. Antimicrobial peptides (AMPs) are distributed in all kingdoms of life, presenting activity against pathogens as well as anticancer, anti-inflammatory, and immunomodulatory activities; consequently, they have prospects as new potential alternatives to antibiotics. Porcine myeloid antimicrobial peptides (PMAPs), the porcine cathelicidin family of AMPs, have been reported in the literature in recent years. PMAPs have become an important research topic due to their strong antibacterial activity. This review focuses on the universal trends in the biochemical parameters, structural characteristics and biological activities of PMAPs.
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Affiliation(s)
- Shuaibing Shi
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Tengfei Shen
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Yongqing Liu
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Liangliang Chen
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Chen Wang
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Chengshui Liao
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.,College of Animal Science and Technology/Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, Luoyang, China
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18
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Wu Y, Williams J, Calder EDD, Walport LJ. Strategies to expand peptide functionality through hybridisation with a small molecule component. RSC Chem Biol 2021; 2:151-165. [PMID: 34458778 PMCID: PMC8341444 DOI: 10.1039/d0cb00167h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/09/2020] [Indexed: 02/04/2023] Open
Abstract
Combining different compound classes gives molecular hybrids that can offer access to novel chemical space and unique properties. Peptides provide ideal starting points for such molecular hybrids, which can be easily modified with a variety of molecular entities. The addition of small molecules can improve the potency, stability and cell permeability of therapeutically relevant peptides. Furthermore, they are often applied to create peptide-based tools in chemical biology. In this review, we discuss general methods that allow the discovery of this compound class and highlight key examples of peptide-small molecule hybrids categorised by the application and function of the small molecule entity.
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Affiliation(s)
- Yuteng Wu
- Protein-Protein Interaction Laboratory, The Francis Crick Institute London UK
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London UK
| | - Jack Williams
- Protein-Protein Interaction Laboratory, The Francis Crick Institute London UK
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London UK
| | - Ewen D D Calder
- Protein-Protein Interaction Laboratory, The Francis Crick Institute London UK
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London UK
| | - Louise J Walport
- Protein-Protein Interaction Laboratory, The Francis Crick Institute London UK
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London London UK
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19
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Reddersen K, Greber KE, Korona-Glowniak I, Wiegand C. The Short Lipopeptides (C 10) 2-KKKK-NH 2 and (C 12) 2-KKKK-NH 2 Protect HaCaT Keratinocytes from Bacterial Damage Caused by Staphylococcus aureus Infection in a Co-Culture Model. Antibiotics (Basel) 2020; 9:antibiotics9120879. [PMID: 33302597 PMCID: PMC7764661 DOI: 10.3390/antibiotics9120879] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 11/16/2022] Open
Abstract
The search for new antimicrobial strategies is of major importance since there is a growing resistance of both bacteria and fungi to existing antimicrobials. Lipopeptides are promising and potent antimicrobial compounds. For translation into clinically useful molecules, effectiveness of peptide treatment against human infections must be proved in complex in vitro wound models. The aim of this study was to examine if the synthesized short lipopeptides (C10)2-KKKK-NH2 and (C12)2-KKKK-NH2 can protect HaCaT keratinocytes from bacterial damage caused by Staphylococcus aureus infection in a coculture model. After 1 h, 24 h, and 48 h incubation, cellular ATP level and release of the cytotoxicity marker LDH as well as the proinflammatory cytokines interleukin-6 and interleukin-1α were measured. Infection of the keratinocytes resulted in strong bacterial damage of HaCaT cells along with low cellular ATP levels and high release of LDH, IL-6, and IL-1α after 24 h and 48 h. Incubation of the infected human keratinocytes with (C10)2-KKKK-NH2 and (C12)2-KKKK-NH2 resulted in protection of the keratinocytes from bacterial damage caused by Staphylococcus aureus infection with ATP, LDH, IL-6, and IL-1α levels comparable to the untreated control. Hence, both synthesized lipopeptides are promising candidates with high therapeutic potential in dermatology for the treatment of topical infections.
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Affiliation(s)
- Kirsten Reddersen
- Klinik für Hautkrankheiten, Universitätsklinikum Jena, 07743 Jena, Germany;
- Correspondence: ; Tel.: +49-3641-932-8879
| | - Katarzyna E. Greber
- Physical Chemistry Department, Faculty of Pharmacy, Medical University of Gdansk, 80-416 Gdansk, Poland;
| | - Izabela Korona-Glowniak
- Department of Pharmaceutical Microbiology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Cornelia Wiegand
- Klinik für Hautkrankheiten, Universitätsklinikum Jena, 07743 Jena, Germany;
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20
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Yim VV, Kavianinia I, Cameron AJ, Harris PWR, Brimble MA. Direct synthesis of cyclic lipopeptides using intramolecular native chemical ligation and thiol-ene CLipPA chemistry. Org Biomol Chem 2020; 18:2838-2844. [PMID: 32048704 DOI: 10.1039/d0ob00203h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Naturally occurring cyclic lipopeptides exhibit a diverse range of biological activities and possess several favourable properties. Chemically synthesising and modifying these natural compounds can alter their biological and physical properties. Cyclic lipopeptides are often difficult to synthesise, especially when the lipid moiety is directly attached to the cyclic scaffold. The construction of a series of cyclic lipopeptide analogues of the antifungal peptide iturin A is reported herein. The synthesis of the parent peptide macrocycle was achieved using native chemical ligation (NCL), whereupon the regenerated free thiol was used to attach a lipid moiety using Cysteine Lipidation on a Peptide or Amino acid (CLipPA) technology.
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Affiliation(s)
- Victor V Yim
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Iman Kavianinia
- School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Alan J Cameron
- School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Paul W R Harris
- School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
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21
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Liu Y, Li S, Shen T, Chen L, Zhou J, Shi S, Wang Y, Zhao Z, Liao C, Wang C. N-terminal Myristoylation Enhanced the Antimicrobial Activity of Antimicrobial Peptide PMAP-36PW. Front Cell Infect Microbiol 2020; 10:450. [PMID: 32984074 PMCID: PMC7481357 DOI: 10.3389/fcimb.2020.00450] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 07/23/2020] [Indexed: 01/08/2023] Open
Abstract
Drug-resistant bacteria infections and drug residues have been increasing and causing antibiotic resistance and public health threats worldwide. Antimicrobial peptides (AMPs) are novel antimicrobial drugs with the potential to solve these problems. Here, a peptide based on our previously studied peptide PMAP-36PW was designed via N-terminal myristoylation and referred to as Myr-36PW. The fatty acid modification provided the as-prepared peptide with good stability and higher antimicrobial activity compared with PMAP-36PW in vitro. Moreover, Myr-36PW exhibited effective anti-biofilm activity against Gram-negative bacteria and may kill bacteria by improving the permeability of their membranes. In addition, the designed peptide Myr-36PW could inhibit the bacterial growth of Staphylococcus aureus ATCC 25923 and Pseudomonas aeruginosa GIM 1.551 to target organs, decrease the inflammatory damage, show an impressive therapeutic effect on mouse pneumonia and peritonitis experiments, and promote abscess reduction and wound healing in infected mice. These results reveal that Myr-36PW is a promising antimicrobial agent against bacterial infections.
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Affiliation(s)
- Yongqing Liu
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Shengnan Li
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
| | - Tengfei Shen
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Liangliang Chen
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Jiangfei Zhou
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Shuaibing Shi
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Yang Wang
- Henan Provincial Open Laboratory of Key Disciplines in Environment and Animal Products Safety, Henan University of Science and Technology, Luoyang, China
| | - Zhanqin Zhao
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
| | - Chengshui Liao
- Henan Provincial Open Laboratory of Key Disciplines in Environment and Animal Products Safety, Henan University of Science and Technology, Luoyang, China
| | - Chen Wang
- The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China
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22
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Yuan Y, Xu QM, Yu SC, Sun HZ, Cheng JS, Yuan YJ. Control of the polymyxin analog ratio by domain swapping in the nonribosomal peptide synthetase of Paenibacillus polymyxa. J Ind Microbiol Biotechnol 2020; 47:551-562. [PMID: 32495197 DOI: 10.1007/s10295-020-02275-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 04/15/2020] [Indexed: 11/26/2022]
Abstract
Polymyxins are used as the last-line therapy against multidrug-resistant bacteria. However, their further clinical development needs to solve problems related to the presence of heterogeneous analogs, but there is still no platform or methods that can regulate the biosynthesis of polymyxin analogs. In this study, we present an approach to swap domains in the polymyxin gene cluster to regulate the production of different analogs. Following adenylation domain swapping, the proportion of polymyxin B1 increased from 41.36 to 52.90%, while that of B1-1 decreased from 18.25 to 3.09%. The ratio of polymyxin B1 and B3 following starter condensation domain swapping changed from 41.36 and 16.99 to 55.03 and 6.39%, respectively. The two domain-swapping strains produced 62.96% of polymyxin B1, 6.70% of B3 and 3.32% of B1-1. This study also revealed the presence of overflow fluxes between acetoin, 2,3-butanediol and polymyxin. To our best knowledge, this is the first report of engineering the polymyxin synthetase gene cluster in situ to regulate the relative proportions of polymyxin analogs. This research paves a way for regulating lipopeptide analogs and will facilitate the development of novel lipopeptide derivatives.
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Affiliation(s)
- Ye Yuan
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Qiu-Man Xu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Binshuixi Road 393, Xiqing District, Tianjin, 300387, People's Republic of China.
| | - Si-Cen Yu
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Hui-Zhong Sun
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Jing-Sheng Cheng
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China.
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China.
| | - Ying-Jin Yuan
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
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23
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Hermant YO, Cameron AJ, Harris PWR, Brimble MA. Synthesis of Antimicrobial Lipopeptides Using the "CLipPA" Thiol-Ene Reaction. Methods Mol Biol 2020; 2103:263-274. [PMID: 31879932 DOI: 10.1007/978-1-0716-0227-0_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cysteine Lipidation on a Peptide or Amino acid (CLipPA) technology provides a facile method for the lipidation of unprotected peptides containing a free thiol group by using a "click" radical-initiated thiol-ene reaction to effect addition to a vinyl ester. The methodology is highly versatile, leading to high conversion rates while maintaining excellent chemoselectivity and tolerance for a large variety of peptide substrates and functional groups. Herein we describe the simple general procedure for the synthesis of a focused library of bioactive S-lipidated antimicrobial peptides via late-stage derivatization using solution-phase CLipPA lipidation.
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Affiliation(s)
- Yann O Hermant
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Alan J Cameron
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
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24
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Fischer D, Gessner G, Fill TP, Barnett R, Tron K, Dornblut K, Kloss F, Stallforth P, Hube B, Heinemann SH, Hertweck C, Scherlach K, Brunke S. Disruption of Membrane Integrity by the Bacterium-Derived Antifungal Jagaricin. Antimicrob Agents Chemother 2019; 63:e00707-19. [PMID: 31235622 PMCID: PMC6709453 DOI: 10.1128/aac.00707-19] [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: 04/03/2019] [Accepted: 06/14/2019] [Indexed: 01/05/2023] Open
Abstract
Jagaricin is a lipopeptide produced by the bacterial mushroom pathogen Janthinobacterium agaricidamnosum, the causative agent of mushroom soft rot disease. Apart from causing lesions in mushrooms, jagaricin is a potent antifungal active against human-pathogenic fungi. We show that jagaricin acts by impairing membrane integrity, resulting in a rapid flux of ions, including Ca2+, into susceptible target cells. Accordingly, the calcineurin pathway is required for jagaricin tolerance in the fungal pathogen Candida albicans Transcriptional profiling of pathogenic yeasts further revealed that jagaricin triggers cell wall strengthening, general shutdown of membrane potential-driven transport, and the upregulation of lipid transporters, linking cell envelope integrity to jagaricin action and resistance. Whereas jagaricin shows hemolytic effects, it exhibited either no or low plant toxicity at concentrations at which the growth of prevalent phytopathogenic fungi is inhibited. Therefore, jagaricin may have potential for agricultural applications. The action of jagaricin as a membrane-disrupting antifungal is promising but would require modifications for use in humans.
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Affiliation(s)
- Daniel Fischer
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Guido Gessner
- Center for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena and Jena University Hospital, Jena, Germany
| | - Taicia Pacheco Fill
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Robert Barnett
- Junior Research Group Chemistry of Microbial Communication, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Kyrylo Tron
- Center for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena and Jena University Hospital, Jena, Germany
| | - Katharina Dornblut
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Florian Kloss
- Transfer Group Antiinfectives, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Pierre Stallforth
- Junior Research Group Chemistry of Microbial Communication, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Bernhard Hube
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
- Faculty of Biological Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Stefan H Heinemann
- Center for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena and Jena University Hospital, Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
- Faculty of Biological Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Kirstin Scherlach
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
| | - Sascha Brunke
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute, Jena, Germany
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25
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Jovanovic M, Radivojevic J, O'Connor K, Blagojevic S, Begovic B, Lukic V, Nikodinovic-Runic J, Savic V. Rhamnolipid inspired lipopeptides effective in preventing adhesion and biofilm formation of Candida albicans. Bioorg Chem 2019; 87:209-217. [DOI: 10.1016/j.bioorg.2019.03.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 02/22/2019] [Accepted: 03/12/2019] [Indexed: 12/19/2022]
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26
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Luo C, Chen Y, Liu X, Wang X, Wang X, Li X, Zhao Y, Wei L. Engineered biosynthesis of cyclic lipopeptide locillomycins in surrogate host Bacillus velezensis FZB42 and derivative strains enhance antibacterial activity. Appl Microbiol Biotechnol 2019; 103:4467-4481. [PMID: 30989253 DOI: 10.1007/s00253-019-09784-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 01/03/2023]
Abstract
Locillomycins are cyclic lipononapeptides assembled by a nonlinear hexamodular NRPS and have strong antibacterial activity. In this study, we genetically engineered Bacillus velezensis FZB42 as a surrogate host for the heterologous expression of the loc gene cluster for locillomycins. The fosmid N13 containing whole loc gene cluster was screened from the B. velezensis 916 genomic library. Subsequently, a spectinomycin resistance cassette, and the cassette fused with an IPTG inducible promoter Pspac, was introduced in the fosmid N13 using λ Red recombination system, respectively. The resulting fosmids, designated N13+Spec and N13+PSSpec, were used for the transformation of B. velezensis FZB42 to obtain derivative strains FZBNPLOC and FZBPSLOC. RT-PCR and qRT-PCR results revealed the efficient heterologous expression of the loc gene cluster in both derivative strains. Particularly, there was positive correlation between the derivative FZBPSLOC strain and the enhanced production of locillomycins upon addition of the inducer IPTG with the highest production of locillomycins at 15-fold more than that of B. velezensis 916. This overproduction of locillomycins was also related to the enhancement of antibacterial activity against methicillin-resistant Staphylococcus aureus, and exhibited moderate changes in its hemolytic activity. Together our findings demonstrate that the nonlinear hexamodular NRPS, encoded by the loc gene cluster from B. velezensis 916, is sufficient for the biosynthesis of cyclic lipononapeptide locillomycins in the surrogate host B. velezensis FZB42. Moreover, the FZBPSLOC strain will also be useful for further development of novel locillomycins derivatives with improved antibacterial activity.
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Affiliation(s)
- Chuping Luo
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China.
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
| | - Yongxing Chen
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Xuehui Liu
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaohua Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Xiaoyu Wang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xiangqian Li
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Yuping Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Lihui Wei
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
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27
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Greber KE, Zielińska J, Nierzwicki Ł, Ciura K, Kawczak P, Nowakowska J, Bączek T, Sawicki W. Are the short cationic lipopeptides bacterial membrane disruptors? Structure-Activity Relationship and molecular dynamic evaluation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1861:93-99. [PMID: 30463703 DOI: 10.1016/j.bbamem.2018.08.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/21/2022]
Abstract
Short cationic lipopeptides are amphiphilic molecules that exhibit antimicrobial activity mainly against Gram-positives. These compounds bind to bacterial membranes and disrupt their integrity. Here we examine the structure-activity relation (SAR) of lysine-based lipopeptides, with a prospect to rationally design more active compounds. The presented study aims to explain how antimicrobial activity of lipopeptides is affected by the charge of lipopeptide headgroup and the length of lipopeptide acyl chain. The obtained SAR models suggest that the lipophilicity of short synthetic cationic lipopeptides is the major factor that determines their antimicrobial activities. In order to link the differences in antimicrobial activity to the mechanism of action of lipopeptides containing one and two hydrophobic chains, we additionally performed molecular dynamic (MD) simulations. By using combined coarse-grained and all-atom simulations we also show that these compounds neither affect the organization of the membrane lipids nor aggregate to form separate phases. These results, along with the onset of antimicrobial activity of lipopeptides well below the critical micelle concentration (CMC), indicate that lipopeptides do not act in a simple detergent-like manner.
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Affiliation(s)
- Katarzyna E Greber
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Physical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland.
| | - Joanna Zielińska
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Łukasz Nierzwicki
- Gdańsk University of Technology, Faculty of Chemistry, Department of Physical Chemistry, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Krzesimir Ciura
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Physical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Piotr Kawczak
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Joanna Nowakowska
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Physical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Tomasz Bączek
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Wiesław Sawicki
- Medical University of Gdańsk, Faculty of Pharmacy, Department of Physical Chemistry, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
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28
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Design and synthesis of oligo-lipidated arginyl peptide (OLAP) dimers with enhanced physicochemical activity, peptide stability and their antimicrobial actions against MRSA infections. Amino Acids 2018; 50:1329-1345. [PMID: 30066172 DOI: 10.1007/s00726-018-2607-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022]
Abstract
Multi-drug resistant pathogens have been of increasing concern today. There is an urgent need for the discovery of more potent antibiotics. Cationic antimicrobial peptides (CAMPs) are known to be effective antimicrobial agents against resistant pathogens. However, poor activity under physiological conditions is one of the major limitations of CAMPS in clinical applications. In this study, a series of oligo-lipidated arginyl peptide OLAP dimers comprised of a saturated fatty acid chain (with m number of carbon units) and p repeating units of arginyl fatty acid chains (with n number of carbon units) were designed and studied for their antimicrobial activities as well as their physico-chemical property in various physiological conditions, such as in human serum albumin and high salt conditions. Our results showed that OLAP-11 exhibits potent antimicrobial activity against Gram-positive bacteria with improved physico-chemical activity in various physiological conditions. OLAP-11 is also less susceptible to human serum and trypsin degradation. The HPLC-MS analysis showed that the lipid-arginine bond is very stable. SYTOX Green assay and scanning electron microscopy both show that the OLAP-11 killed bacteria via inner membrane disruption. In addition, OLAP-11 is inner membrane targeting, making it difficult for bacteria to develop resistance. Overall, the design of the OLAP dimers provides an alternative approach to improve the physicochemical activity, peptide stability of CAMPs with potent inner membrane disruption and low in vitro toxicity to increase their potential for clinical applications in the future.
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