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Zhang MY, Li S, Wang CY, Zhang ZX, Han YL, Liu XQ, Cheng J, Zhou XY, Zhang YX. A novel antimicrobial peptide S24 combats serious wound infections caused by Pseudomonas aeruginosa and Acinetobacter baumannii. J Antimicrob Chemother 2024:dkae191. [PMID: 38863365 DOI: 10.1093/jac/dkae191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/23/2024] [Indexed: 06/13/2024] Open
Abstract
OBJECTIVES Pseudomonas aeruginosa and Acinetobacter baumannii are ranked as top-priority organisms by WHO. Antimicrobial peptides (AMPs) are promising antimicrobial agents that are highly effective against serious bacterial infections. METHODS In our previous study, a series of α-helical AMPs were screened using a novel multiple-descriptor strategy. The current research suggested that S24 exhibited strong antimicrobial activity against major pathogenic bacteria, and displayed minimal haemolysis, good serum stability and maintained salt resistance. RESULTS We found that S24 exerted an antimicrobial effect by destroying outer membrane permeability and producing a strong binding effect on bacterial genomic DNA that inhibits genomic DNA migration. Furthermore, S24 exerted a strong ability to promote healing in wound infected by P. aeruginosa, A. baumannii and mixed strains in a mouse model. CONCLUSIONS Overall, S24 showed good stability under physiological conditions and excellent antimicrobial activity, suggesting it may be a potential candidate for the development of serious bacterial infection treatment.
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Affiliation(s)
- Meng-Yue Zhang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shuang Li
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Cai-Yun Wang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zi-Xuan Zhang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yu-Ling Han
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xin-Qi Liu
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Juan Cheng
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xun-Yong Zhou
- Weihuakang (Shenzhen) Biotech. Co., Ltd., Shenzhen 518001, China
| | - Yi-Xuan Zhang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
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de Souza GHDA, Rossato L, de Oliveira AR, Simionatto S. Antimicrobial peptides against polymyxin-resistant Klebsiella pneumoniae: a patent review. World J Microbiol Biotechnol 2023; 39:86. [PMID: 36720739 PMCID: PMC9889241 DOI: 10.1007/s11274-023-03530-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/19/2023] [Indexed: 02/02/2023]
Abstract
The spread of polymyxin-resistant Klebsiella pneumoniae strains represents an emerging health challenge, limiting treatment options for the patients. Thus, the development of new antimicrobials is an urgent requirement. Antimicrobial peptides (AMPs) are a large class of compounds that are part of innate immune response; these peptides are promising compounds in the field of antimicrobial resistance and are present in all organisms. The present review evaluated patents on antimicrobial peptides tested against polymyxin-resistant K. pneumoniae, available on Espacenet as of September 2022. A total of 1313 patents were examined and 1197 excluded as they were out of focus for this review; 104 patents of peptides tested against K. pneumoniae were included; of which only 14 were tested against polymyxin-resistant K. pneumoniae strains. The results indicated that all AMPs evaluated were in the experimental or pre-clinical phase; the clinical phase is pending. Furthermore, a few peptides were tested effectively against polymyxin-resistant K. pneumoniae. Although, the research and patent filing alone are not enough to develop a suitable antimicrobial therapy, they can represent good starting point upon which to develop new antimicrobials. More investment is required to push these pharmaceuticals through the stages of development to introduce them into the market.
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Affiliation(s)
- Gleyce Hellen de Almeida de Souza
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, Mato Grosso do Sul 79804970 Brazil
| | - Luana Rossato
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, Mato Grosso do Sul 79804970 Brazil
| | - Alexandre Ribeiro de Oliveira
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, Mato Grosso do Sul 79804970 Brazil
| | - Simone Simionatto
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, Mato Grosso do Sul, 79804970, Brazil.
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Gonçalves S, Martins IC, Santos NC. Nanoparticle‐peptide conjugates for bacterial detection and neutralization: Potential applications in diagnostics and therapy. WIRES NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1819. [DOI: 10.1002/wnan.1819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/02/2022] [Accepted: 05/06/2022] [Indexed: 11/24/2022]
Affiliation(s)
- Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Lisbon Portugal
| | - Ivo C. Martins
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Lisbon Portugal
| | - Nuno C. Santos
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Lisbon Portugal
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Aslam MZ, Firdos S, Li Z, Wang X, Liu Y, Qin X, Yang S, Ma Y, Xia X, Zhang B, Dong Q. Detecting the Mechanism of Action of Antimicrobial Peptides by Using Microscopic Detection Techniques. Foods 2022; 11:foods11182809. [PMID: 36140937 PMCID: PMC9497566 DOI: 10.3390/foods11182809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Increasing antibiotic resistance has shifted researchers’ focus to antimicrobial peptides (AMPs) as alternatives to antibiotics. AMPs are small, positively charged, amphipathic peptides with secondary helical structures. They have the ability to disrupt the bacterial membrane and create wedges due to electrostatic differences. Water molecules enter the pathogens through those wedges and disrupt their normal cellular functioning, eventually causing the death of the pathogens. Keeping in mind the importance of AMPs, this review compiles recent data and is divided into three parts. The first part explains the AMP structure and properties, the second part comprises the spectroscopy techniques currently used for evaluating the AMP-bacterial targeting mechanism as well as its structure and safety; and the third part describes the production of AMPs from an animal source (whey protein). Most of the peptides that were used in recent studies have been either the precursors of a natural peptide or synthetic peptides with some modifications, but data on the exploitation of dairy protein are scarce. Among the little-studied milk proteins and peptides, in the last three years, whey protein has been studied the least based on the reported data. Because whey protein is a leftover part of cheese making that often drains out as cheese waste, causing soil and environmental pollution, today, the need of the hour is to produce safe AMPs from whey protein. The use of whey protein that is based on hydrolyzing lactic acid bacteria with some structural modifications can increase AMPs’ potency, stability, and safety, and it can also help to avoid soil and environmental pollution as a result of whey drainage.
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Affiliation(s)
- Muhammad Zohaib Aslam
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shumaila Firdos
- Dera Ghazi Khan Section of Punjab Livestock and Dairy Development Department, Dera Ghazi Khan 32200, Pakistan
| | - Zhousi Li
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiang Wang
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yangtai Liu
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiaojie Qin
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shuo Yang
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yue Ma
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xuejuan Xia
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Bolin Zhang
- Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing 100083, China
| | - Qingli Dong
- School of Health Sciences and Engineering, The University of Shanghai for Science and Technology, Shanghai 200093, China
- Correspondence: ; Tel.: +86-135-8597-1239
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Barbosa JC, Gonçalves S, Makowski M, Silva ÍC, Caetano T, Schneider T, Mösker E, Süssmuth RD, Santos NC, Mendo S. Insights into the mode of action of the two-peptide lantibiotic lichenicidin. Colloids Surf B Biointerfaces 2022; 211:112308. [PMID: 34973602 DOI: 10.1016/j.colsurfb.2021.112308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 11/30/2022]
Abstract
Lantibiotics are promising candidates to address the worldwide problem of antibiotic resistance. They belong to a class of natural compounds exhibiting strong activity against clinically relevant Gram-positive bacterial strains, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE). Lichenicidin is a class II two-peptide lantibiotic. The presence of the two mature peptides, Bliα and Bliβ, is necessary for full activity against target bacteria. This work aims at clarifying the synergistic activity of both peptides in their interaction with the target membranes. The effect of lichenicidin was tested against S. aureus cells and large unilamellar vesicles. Lichenicidin increases the net surface charge of S. aureus, as shown by zeta-potential measurements, without reaching electroneutralization. In addition, lichenicidin causes cell surface perturbations that culminate in the leakage of its internal contents, as observed by atomic force microscopy. Bliα seems to have low affinity for S. aureus, however, it contributes to increase the affinity of Bliβ, because together they present higher affinity than separately. In contrast, Bliα seems to provide an anchoring site for lichenicidin in lipid II-containing membranes. Interestingly, Bliβ alone can induce high levels of membrane leakage, but this effect appears to be faster in the presence of Bliα. Based on this information, we propose a mechanism of action of lichenicidin.
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Affiliation(s)
- Joana C Barbosa
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
| | - Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Marcin Makowski
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Ítala C Silva
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Tânia Caetano
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
| | - Tanja Schneider
- Institute for Pharmaceutical Microbiology, University of Bonn, Bonn, Germany.
| | - Eva Mösker
- Institut für Chemie, Technische Universität Berlin, Berlin, Germany.
| | | | - Nuno C Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Sónia Mendo
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
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