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Ban F, Zhou L, Yang Z, Liu Y, Zhang Y. Aspergillusidone G Potentiates the Anti-Inflammatory Effects of Polaprezinc in LPS-Induced BV2 Microglia: A Bioinformatics and Experimental Study. Mar Drugs 2024; 22:324. [PMID: 39057433 PMCID: PMC11278036 DOI: 10.3390/md22070324] [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: 06/27/2024] [Revised: 07/16/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Neuroinflammation is one of the main mechanisms involved in the progression of neurodegenerative diseases (NDs), and microglial activation is the main feature of neuroinflammation. Polaprezinc (Pol), a chelator of L-carnosine and zinc, is widely used as a clinical drug for gastric ulcers. However, its potential effects on NDs remain unexplored. In LPS-induced BV-2 microglia, we found that Pol reduced the generation of NO and ROS and revealed inhibited expression of iNOS, COX-2, and inflammatory factors such as IL-6, TNF-α, and 1L-1β by Pol using qRT-PCR and Western blotting. These effects were found to be associated with the suppression of the NF-κB signaling pathway. Moreover, we evaluated the potential synergistic effects of aspergillusidone G (Asp G) when combined with Pol. Remarkably, co-treatment with low doses of Asp G enhanced the NO inhibition by Pol from approximately 30% to 80% in LPS-induced BV2 microglia, indicating a synergistic anti-inflammatory effect. A bioinformatics analysis suggested that the synergistic mechanism of Asp G and Pol might be attributed to several targets, including NFκB1, NRF2, ABL1, TLR4, and PPARα. These findings highlight the anti-neuroinflammatory properties of Pol and its enhanced efficacy when combined with Asp G, proposing a novel therapeutic strategy for managing neuroinflammation in NDs.
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Affiliation(s)
- Fangfang Ban
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Laboratory for Marine Biological Products, Guangdong Provincial Center for Modern Agricultural Scientific Innovation, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (F.B.); (Z.Y.); (Y.L.)
| | - Longjian Zhou
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Laboratory for Marine Biological Products, Guangdong Provincial Center for Modern Agricultural Scientific Innovation, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (F.B.); (Z.Y.); (Y.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524088, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Zhiyou Yang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Laboratory for Marine Biological Products, Guangdong Provincial Center for Modern Agricultural Scientific Innovation, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (F.B.); (Z.Y.); (Y.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524088, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Yayue Liu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Laboratory for Marine Biological Products, Guangdong Provincial Center for Modern Agricultural Scientific Innovation, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (F.B.); (Z.Y.); (Y.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524088, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Yi Zhang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Laboratory for Marine Biological Products, Guangdong Provincial Center for Modern Agricultural Scientific Innovation, Shenzhen Institute of Guangdong Ocean University, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (F.B.); (Z.Y.); (Y.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524088, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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Zhang S, Yang N, Mao R, Hao Y, Teng D, Wang J. In Vitro/Vivo Mechanisms of Antibacterial Peptide NZ2114 against Staphylococcus pseudintermedius and Its Biofilms. Antibiotics (Basel) 2024; 13:341. [PMID: 38667017 PMCID: PMC11047522 DOI: 10.3390/antibiotics13040341] [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: 02/27/2024] [Revised: 03/23/2024] [Accepted: 04/04/2024] [Indexed: 04/29/2024] Open
Abstract
Staphylococcus pseudintermedius is an opportunistic pathogen commonly found in canines, and has garnered escalating interest due to its potential for zoonotic transmission and increasing antimicrobial resistance. However, the excessive use of antibiotics and the characteristic of S. pseudintermedius forming biofilms make treatment challenging. In this study, the in vivo and in vitro antimicrobial activity and mechanisms of action of NZ2114, a plectasin-derived peptide, against S. pseudintermedius were investigated. NZ2114 exhibited potent antibacterial activity towards S. pseudintermedius (minimum inhibitory concentration, MIC = 0.23 μM) with a lower probability of inducing drug-resistant mutations and efficient bactericidal action, which was superior to those of mopirucin (MIC = 0.25-0.5 μM) and lincomycin (MIC = 4.34-69.41 μM). The results of electron microscopy and flow cytometry showed that NZ2114 disrupted S. pseudintermedius' cell membrane, resulting in cellular content leakage, cytoplasmic membrane shrinkage, and, eventually, cell death. The intracellular ROS activity and Alamar Blue detection showed that NZ2114 interferes with intracellular metabolic processes. In addition, NZ2114 effectively inhibits biofilm formation, and confocal laser scanning microscopy further revealed its antibacterial and anti-biofilm activity (biofilm thickness reduced to 6.90-17.70 μm). The in vivo therapy of NZ2114 in a mouse pyoderma model showed that it was better than lincomycin in effectively decreasing the number of skin bacteria, alleviating histological damage, and reducing the skin damage area. These results demonstrated that NZ2114 may be a promising antibacterial candidate against S. pseudintermedius infections.
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Affiliation(s)
- Shuang Zhang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Na Yang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Ruoyu Mao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Ya Hao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Da Teng
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Jianhua Wang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
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Abrar A, Zafar A, Fatima M, Muntaqua D, Naz I, Fatima H, Ul Haq I. Mechanistic insight into the synergistic antimicrobial potential of Fagonia indica Burm.f. extracts with cefixime. Saudi Pharm J 2024; 32:101893. [PMID: 38204592 PMCID: PMC10777119 DOI: 10.1016/j.jsps.2023.101893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 12/02/2023] [Indexed: 01/12/2024] Open
Abstract
Fagonia indica Burm.f. is known for its anti-infective character and has been studied in the present work as a synergistic remedy against resistant bacterial strains. Initially, phytochemicals were quantified in n-Hexane (n-Hex), ethyl acetate (E.A), methanol (MeOH), and aqueous (Aq.) extracts by Total Phenolic Content (TPC), Total Flavonoid Content (TFC) and Reverse Phase High Performance Liquid Chromatography (RP-HPLC) analysis. Later, after establishing an antibacterial resistance profile for extracts and antibiotics against gram-positive and gram-negative strains, synergism was evaluated in combination with cefixime through time-kill kinetics and bacterial protein estimation studies. Topographic images depicting synergism were obtained by scanning electron microscopy for Methicilin-resistant Staphylococcus aureus (MRSA) and Resistant Escherichia coli (R.E. coli). Results showed the presence of maximum phenolic (28.4 ± 0.67 μg GAE/mg extract) and flavonoid (11 ± 0.42 μg QE/mg extract) contents in MeOH extract. RP-HPLC results also displayed maximum polyphenols in MeOH extract followed by E.A extract. Clinical strains were resistant to cefixime whereas these were moderately inhibited by all extracts (MIC 150-300 µg/ml) except Aq. extract. E.A and n-Hex extracts demonstrated maximum synergism (Fractional inhibitory concentration index (FICI) 0.31) against R.E. coli. The n-Hex extract displayed total synergism against R.P. a with a 4-fold reduction in cefixime dose. Time-kill kinetics showed maximum inhibition of gram-negative bacterial growth from 3 to 12 h when treated at FICI and 2FICI values with > 10-fold reduction of the extracts' dose. All combinations demonstrate > 70 % protein content inhibition with bacterial cell wall disruption in SEM images. Fortunately, FICI concentrations have low hemolytic potential (<5%). Conclusively, F. indica extracts can mitigate antimicrobial resistance against cefixime and can be investigated in detail by in vivo and mechanistic studies.
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Affiliation(s)
- Anum Abrar
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Aroosa Zafar
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Mahvish Fatima
- Department of Physics, Science Unit, Deanship of Educational Services, Qassim University, Buraidah 51452, Saudi Arabia
| | - Durdana Muntaqua
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad 44000, Pakistan
| | - Iffat Naz
- Department of Biology, Science Unit, Deanship of Educational Services, Qassim University, Buraidah 51452, Saudi Arabia
| | - Humaira Fatima
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Ihsan Ul Haq
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
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Li Z, Li T, Tang J, Huang L, Ding Y, Zeng Z, Liu J. Antibacterial Activity of Surfactin and Synergistic Effect with Conventional Antibiotics Against Methicillin-Resistant Staphylococcus aureus Isolated from Patients with Diabetic Foot Ulcers. Diabetes Metab Syndr Obes 2023; 16:3727-3737. [PMID: 38029000 PMCID: PMC10674630 DOI: 10.2147/dmso.s435062] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The prevalence of diabetic foot ulcers (DFUs) is increasing, leading to a huge financial burden and human suffering. Furthermore, antibiotic resistance is an urgent problem in the realm of clinical practice. Antimicrobial peptides are an effective and feasible strategy for combating infections caused by drug-resistant bacteria. Therefore, we investigated the in vitro antimicrobial ability of the lipopeptide surfactin, either alone or in combination with conventional antibiotics, against the standard and clinical strains of Staphylococcus aureus, including methicillin-resistant S. aureus (MRSA), isolated from patients with DFUs. Methods The minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of surfactin on the selected strains were evaluated by a microbroth dilution technique. The growth curves of the selected strains with and without surfactin were measured, and transmission electron microscopy was used to observe the structure of surfactin-treated bacterial cells. The biofilm inhibitory abilities of surfactin were assessed by crystal violet staining. The antimicrobial interactions between surfactin and conventional antibiotics were established using a checkerboard assay, as well as determining the mutant prevention concentration. The inhibitory effect of surfactin on penicillinase was tested by iodometry. Results The MIC and MBC values of surfactin ranged from 512 to 1024 µg/mL and 1024 to 2048 µg/mL, respectively. Moreover, surfactin significantly prevented the S. aureus biofilm formation and displayed limited toxicity on human red blood cells. The synergies between surfactin and ampicillin, oxacillin, and tetracycline against S. aureus were revealed. In vitro resistance was not readily produced by surfactin. The action of surfactin may be by disrupting bacterial cell membranes and inhibiting penicillinase. Conclusion Surfactin appears to be a potential option for the treatment of DFUs infected with MRSA, as it is capable of improving antimicrobial activities and can be used alone or in combination with conventional antibiotics to prevent or postpone the emergence of resistance.
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Affiliation(s)
- Zhaoyinqian Li
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
| | - Tingting Li
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
- Department of Laboratory Medicine, West China Fourth Hospital, Sichuan University, Chengdu, People’s Republic of China
| | - Jingyang Tang
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
| | - Li Huang
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
| | - Yinhuan Ding
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
| | - Zhangrui Zeng
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
| | - Jinbo Liu
- Department of Laboratory Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China
- Sichuan Province Engineering Technology Research Center of Molecular Diagnosis of Clinical Diseases, Luzhou, People’s Republic of China
- Molecular Diagnosis of Clinical Diseases Key Laboratory of Luzhou, Luzhou, People’s Republic of China
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5
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Guevara YAS, Santos MHC, Gomes FIR, Mesquita FP, Souza PFN. A historical, economic, and technical-scientific approach to the current crisis in the development of antibacterial drugs: Promising role of antibacterial peptides in this scenario. Microb Pathog 2023; 179:106108. [PMID: 37044203 DOI: 10.1016/j.micpath.2023.106108] [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: 03/10/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/14/2023]
Abstract
The emergence of antibiotic resistance (AMR) is a global public health problem. According to estimates, drug-resistant bacteria infect 2 million patients and perish 23,000 annually. To overcome this problem, antimicrobial peptides became a potential solution based on a new mechanism of action against bacteria. This article addresses the phenomenon of antibacterial resistance in most of its nuances, responding to historical, technical-scientific, and economic aspects. Likewise, it explores new therapeutic approaches to combat multi-resistant pathogens, specifically concerning antibacterial peptides, as a potential therapeutic tool to mitigate the current crisis of antibacterial drugs. It is expected that, with technological advances, especially with the advent and adoption of artificial intelligence, there will be an increase in diversified synthetic peptide production, which can face the challenges that we have in terms of antibacterial drugs.
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Affiliation(s)
- Yeimer A S Guevara
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Maria H C Santos
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Francisco I R Gomes
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Felipe P Mesquita
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Pedro F N Souza
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil.
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Si Z, Pethe K, Chan-Park MB. Chemical Basis of Combination Therapy to Combat Antibiotic Resistance. JACS AU 2023; 3:276-292. [PMID: 36873689 PMCID: PMC9975838 DOI: 10.1021/jacsau.2c00532] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/10/2022] [Accepted: 11/10/2022] [Indexed: 06/10/2023]
Abstract
The antimicrobial resistance crisis is a global health issue requiring discovery and development of novel therapeutics. However, conventional screening of natural products or synthetic chemical libraries is uncertain. Combination therapy using approved antibiotics with inhibitors targeting innate resistance mechanisms provides an alternative strategy to develop potent therapeutics. This review discusses the chemical structures of effective β-lactamase inhibitors, outer membrane permeabilizers, and efflux pump inhibitors that act as adjuvant molecules of classical antibiotics. Rational design of the chemical structures of adjuvants will provide methods to impart or restore efficacy to classical antibiotics for inherently antibiotic-resistant bacteria. As many bacteria have multiple resistance pathways, adjuvant molecules simultaneously targeting multiple pathways are promising approaches to combat multidrug-resistant bacterial infections.
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Affiliation(s)
- Zhangyong Si
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459
| | - Kevin Pethe
- Lee
Kong Chian School of Medicine, Nanyang Technological
University, Singapore 636921
- Singapore
Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551
| | - Mary B. Chan-Park
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459
- Lee
Kong Chian School of Medicine, Nanyang Technological
University, Singapore 636921
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Recent Approaches for Downplaying Antibiotic Resistance: Molecular Mechanisms. BIOMED RESEARCH INTERNATIONAL 2023; 2023:5250040. [PMID: 36726844 PMCID: PMC9886476 DOI: 10.1155/2023/5250040] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 10/06/2022] [Accepted: 10/12/2022] [Indexed: 01/25/2023]
Abstract
Antimicrobial resistance (AMR) is a ubiquitous public health menace. AMR emergence causes complications in treating infections contributing to an upsurge in the mortality rate. The epidemic of AMR in sync with a high utilization rate of antimicrobial drugs signifies an alarming situation for the fleet recovery of both animals and humans. The emergence of resistant species calls for new treatments and therapeutics. Current records propose that health drug dependency, veterinary medicine, agricultural application, and vaccination reluctance are the primary etymology of AMR gene emergence and spread. Recently, several encouraging avenues have been presented to contest resistance, such as antivirulent therapy, passive immunization, antimicrobial peptides, vaccines, phage therapy, and botanical and liposomal nanoparticles. Most of these therapies are used as cutting-edge methodologies to downplay antibacterial drugs to subdue the resistance pressure, which is a featured motive of discussion in this review article. AMR can fade away through the potential use of current cutting-edge therapeutics, advancement in antimicrobial susceptibility testing, new diagnostic testing, prompt clinical response, and probing of new pharmacodynamic properties of antimicrobials. It also needs to promote future research on contemporary methods to maintain host homeostasis after infections caused by AMR. Referable to the microbial ability to break resistance, there is a great ultimatum for using not only appropriate and advanced antimicrobial drugs but also other neoteric diverse cutting-edge therapeutics.
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Li S, Shui Y, Ma J, Yuan Y, Jiang W, Xu C, Wang L, Ren Y, Deng B, Zhang W, Li Z. Antimicrobial activity of CT-K3K7, a modified peptide by lysine substitutions from ctry2459 - A Chaerilus tryznai scorpion venom peptide. Toxicon 2022; 218:88-98. [PMID: 36113685 DOI: 10.1016/j.toxicon.2022.09.004] [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: 07/13/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 11/27/2022]
Abstract
Antimicrobial peptides (AMPs) have started to garner more interest as novel antimicrobial agents. The scorpion venom peptide ctry2459 was modified to CT-K3K7 by lysine substitutions at the 3rd and 7th positions to increase the cationic properties. We discovered that the modified peptides CT-K3K7 had improved antibacterial activity, higher thermal stability, as well as lower hemolytic activity. It can kill S. aureus and P. aeruginosa rapidly, and reduce the production of biofilm and live bacterial residues in biofilm in vitro. CT-K3K7 has also been demonstrated to decrease bacterial counts, abscess area, and inflammatory cell infiltration in the mouse subcutaneous abscess models that were duplicated by S. aureus and P. aeruginosa. CT-K3K7 has difficulty in inducing S. aureus and P. aeruginosa to develop drug resistance, which may be related to the bactericidal properties. CT-K3K7 increases cationic properties by lysine substitutions can increase the electrostatic force between the peptides and the bacterial surface, which can lead to an increase in bacterial membrane permeability and DNA binding. In conclusion, the modified peptide CT-K3K7 enhances the antimicrobial activity and can be a novel antimicrobial agent candidate for the treatment of infections by S. aureus and P. aeruginosa.
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Affiliation(s)
- Shasha Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yingbin Shui
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Jiayue Ma
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yaping Yuan
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Wenxing Jiang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Chenxi Xu
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Lejing Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yongjing Ren
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Bo Deng
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Wenlu Zhang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Zhongjie Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China.
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9
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Ramalho SR, de Cássia Orlandi Sardi J, Júnior EC, Marchetto R, Wender H, Vargas LFP, de Miranda A, Almeida CV, de Oliveira Almeida LH, de Oliveira CFR, Macedo MLR. The synthetic antimicrobial peptide IKR18 displays anti-infectious properties in Galleria mellonella in vivo model. Biochim Biophys Acta Gen Subj 2022; 1866:130244. [PMID: 36162730 DOI: 10.1016/j.bbagen.2022.130244] [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: 05/31/2022] [Revised: 08/14/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022]
Abstract
Antimicrobial peptides (AMPs) are promising tools for developing new antibiotics. We described the design of IKR18, an AMP designed with the aid of computational tools. IKR18 showed antimicrobial activity against Gram-negative and Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). CD studies revealed that IKR18 assumes an alpha-helical structure in the membrane-mimetic environment. The action mechanism IKR18 involves damage to the bacteria membrane, as demonstrated by Sytox green uptake. Furthermore, IKR18 displayed synergic and additive effects in combination with antibiotics ciprofloxacin and vancomycin. The peptide showed anti-biofilm activity in concentration and efficiency compared with commercial antibiotics, involving the direct death of bacteria, as confirmed by scanning electron microscopy. The anti-infective activity of IKR18 was demonstrated in the Galleria mellonella model infected with S. aureus, MRSA, and Acinetobacter baumannii. The novel bioinspired peptide, IKR18, proved to be effective in the control of bacterial infection, opening opportunities for the development of further assays, including preclinical models.
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Affiliation(s)
- Suellen Rodrigues Ramalho
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Janaina de Cássia Orlandi Sardi
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Edson Crusca Júnior
- Instituto de Química, Departamento de Bioquímica e Química Tecnológica, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, Brazil
| | - Reinaldo Marchetto
- Instituto de Química, Departamento de Bioquímica e Química Tecnológica, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, Brazil
| | - Heberton Wender
- Laboratório de Nanomateriais e Nanotecnologia Aplicada (LNNA), Instituto de Física, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Luiz Felipe Plaça Vargas
- Laboratório de Nanomateriais e Nanotecnologia Aplicada (LNNA), Instituto de Física, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Antonio de Miranda
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Claudiane Vilharroel Almeida
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Luís Henrique de Oliveira Almeida
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Caio Fernando Ramalho de Oliveira
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Maria Lígia Rodrigues Macedo
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, FACFAN, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil.
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10
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Masadeh M, Ayyad A, Haddad R, Alsagar M, Alzoubi K, Alrabadi N. Functional and toxicological evaluation of the MAA-41: a novel rationally designed antimicrobial peptide using hybridization and modification methods from LL-37 and BMAP-28. Curr Pharm Des 2022; 28:2177-2188. [DOI: 10.2174/1381612828666220705150817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/30/2022] [Indexed: 11/22/2022]
Abstract
Background:
Managing bacterial infections caused by multidrug-resistant (MDR) and biofilm-forming bacteria is a global health concern. Therefore, enormous efforts were directed toward finding potential alternative antimicrobial agents such as antimicrobial peptides (AMPs).
Aim:
We aimed to synthesize a novel modified hybrid peptide designed from natural parents’ peptides with enhanced activity and reduced toxicity profile.
Method:
Rational design was used to hybridize the two antimicrobial peptides, in which the alpha-helical parts of BMAP-28 and LL-37 were combined. Then, several amino acid modifications were applied to generate a modified hybrid peptide named MAA-41. The physicochemical properties were checked using in silico methods. The MAA-41 was evaluated for its antimicrobial and anti-biofilm activities. Synergistic studies were performed with five conventional antibiotics. Finally, the cytotoxicity on mammalian cells and the hemolytic activity were assessed.
Results:
The MAA-41 revealed a broad-spectrum activity against both Gram-positive and Gram-negative bacteria including standard and MDR bacterial strains. The concentration against planktonic cells ranged between 10 and 20 μM with higher potency against Gram-negative bacteria. Additionally, the MAA-41 displayed potent activity in eradicating biofilm-forming cells, and the reported MBECs were equal to the MIC values reported for planktonic cells. This new peptide exhibited reduced toxicity profiles against erythrocyte cells but not against Vero cells. Combining MAA-41 peptides with conventional antibiotics improved the antimicrobial activity of the combined agents. Either synergistic or additive effects were shown as a significant decrease in MIC to 0.25 μM.
Conclusion:
This study proposes the validity of a novel peptide (MAA-41) with enhanced antimicrobial activity and reduced toxicity, especially when used as conventional antibiotic combinations.
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Affiliation(s)
- Majed Masadeh
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Afnan Ayyad
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Razan Haddad
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Mohammad Alsagar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Karem Alzoubi
- Department of Pharmacy Practice and Pharmacotherapeutics, University of Sharjah, Sharjah, UAE.
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
| | - Nasr Alrabadi
- Department of Pharmacology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan, 22110
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11
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Poustforoosh A, Faramarz S, Nematollahi MH, Hashemipour H, Negahdaripour M, Pardakhty A. In silico SELEX screening and statistical analysis of newly designed 5mer peptide-aptamers as Bcl-xl inhibitors using the Taguchi method. Comput Biol Med 2022; 146:105632. [PMID: 35617726 DOI: 10.1016/j.compbiomed.2022.105632] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 04/19/2022] [Accepted: 04/22/2022] [Indexed: 11/03/2022]
Abstract
Drug development for cancer treatment is a complex process that requires special efforts. Targeting crucial proteins is the most essential purpose of drug design in cancers. Bcl-xl is an anti-apoptotic protein that binds to pro-apoptotic proteins and interrupts their signals. Pro-apoptotic Bcl-xl effectors are short BH3 sequences that form an alpha helix and bind to anti-apoptotic proteins to inhibit their activity. Computational systematic evolution of ligands by exponential enrichment (SELEX) is an exclusive approach for developing peptide aptamers as potential effectors. Here, the amino acids with a high tendency for constructing an alpha-helical structure were selected. Due to the enormous number of pentapeptides, Taguchi method was used to study a selected number of peptides. The binding affinity of the peptides to Bcl-xl was assessed using molecular docking, and after analysis of the obtained results, a final set of optimized peptides was arranged and constructed. For a better comparison, three chemical compounds with approved anti-Bcl-xl activity were selected for comparison with the top-ranked 5mer peptides. The optimized peptides showed considerable binding affinity to Bcl-xl. The molecular dynamics (MD) simulation indicated that the designed peptide (PO5) could create considerable interactions with the BH3 domain of Bcl-xl. The MM/GBSA calculations revealed that these interactions were even stronger than those created by chemical compounds. In silico SELEX is a novel approach to design and evaluate peptide-aptamers. The experimental design improves the SELEX process considerably. Finally, PO5 could be considered a potential inhibitor of Bcl-xl and a potential candidate for cancer treatment.
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Affiliation(s)
- Alireza Poustforoosh
- Chemical Engineering Department, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.
| | - Sanaz Faramarz
- Department of Clinical Biochemistry, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Hadi Nematollahi
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran; Department of Clinical Biochemistry, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Hassan Hashemipour
- Chemical Engineering Department, Faculty of Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Manica Negahdaripour
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran; Pharmaceutical Sciences Research Center, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abbas Pardakhty
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
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12
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Li Z, Jing X, Yuan Y, Shui Y, Li S, Zhao Z, Deng B, Zhang W. In vitro and in vivo Activity of Phibilin Against Candida albicans. Front Microbiol 2022; 13:862834. [PMID: 35633688 PMCID: PMC9130856 DOI: 10.3389/fmicb.2022.862834] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/25/2022] [Indexed: 11/13/2022] Open
Abstract
The increase in the occurrence of antifungal-resistant Candida albicans infections necessitates more research to explore alternative effective and safe agents against this fungus. In this work, Phibilin, a new antimicrobial peptide obtained from Philomycus bilineatus and used in traditional Chinese medicine, effectively inhibits the growth and activities of C. albicans, including the clinical resistant strains. Phibilin is a fungicidal antimicrobial peptide that exhibited its antimicrobial effect against C. albicans mainly by disrupting the membrane and interacting with the DNA of the fungi. In particular, Phibilin induces the necrosis of C. albicans via the ROS-related pathway. Moreover, this antifungal compound inhibited the biofilm formation of C. albicans by preventing the development of hyphae in a dose-dependent manner. Furthermore, Phibilin and clotrimazole displayed a synergistic effect in inhibiting the growth of the fungi. In the mouse cutaneous infection model, Phibilin significantly inhibited the formation of skin abscesses and decreased the counts of C. albicans cells in the infected area. Overall, Phibilin is potentially an effective agent against skin infections caused by C. albicans.
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Affiliation(s)
- Zhongjie Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Xiaoyuan Jing
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Yaping Yuan
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Yingbin Shui
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Shasha Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Zhuoran Zhao
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Bo Deng
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Wenlu Zhang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
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13
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Greve JM, Cowan JA. Tackling antimicrobial stewardship through synergy and antimicrobial peptides. RSC Med Chem 2022; 13:511-521. [PMID: 35694695 PMCID: PMC9132191 DOI: 10.1039/d2md00048b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/04/2022] [Indexed: 11/21/2022] Open
Abstract
The unrestricted use of antibiotics has led to rapid development of antibiotic resistance (AR) and renewed calls to address this serious problem. This review summarizes the most common mechanisms of antibiotic action, and in turn antibiotic resistance, as well as pathways to mitigate the harm. Focus is then turned to emerging antibiotic strategies, including antimicrobial peptides (AMPs), with a discussion of their modes of action, biochemical features, and potential challenges for their use as antibiotics. The role of synergy in antimicrobials is also examined, with a focus on the synergy of AMPs and other emerging interactions with synergistic potential.
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Affiliation(s)
- Jenna M Greve
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA +1 614 292 2703
| | - James A Cowan
- Department of Chemistry and Biochemistry, The Ohio State University 100 West 18th Avenue Columbus Ohio 43210 USA +1 614 292 2703
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14
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Cheah YH, Liu CY, Yip BS, Wu CL, Peng KL, Cheng JW. Strategy to Enhance Anticancer Activity and Induced Immunogenic Cell Death of Antimicrobial Peptides by Using Non-Nature Amino Acid Substitutions. Biomedicines 2022; 10:biomedicines10051097. [PMID: 35625834 PMCID: PMC9138567 DOI: 10.3390/biomedicines10051097] [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: 04/07/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 11/30/2022] Open
Abstract
There is an urgent and imminent need to develop new agents to fight against cancer. In addition to the antimicrobial and anti-inflammatory activities, many antimicrobial peptides can bind to and lyse cancer cells. P-113, a 12-amino acid clinically active histatin-rich peptide, was found to possess anti-Candida activities but showed poor anticancer activity. Herein, anticancer activities and induced immunogenic cancer cell death of phenylalanine-(Phe-P-113), β-naphthylalanine-(Nal-P-113), β-diphenylalanine-(Dip-P-113), and β-(4,4′-biphenyl)alanine-(Bip-P-113) substituted P-113 were studied. Among these peptides, Nal-P-113 demonstrated the best anticancer activity and caused cancer cells to release potent danger-associated molecular patterns (DAMPs), such as reactive oxygen species (ROS), cytochrome c, ATP, and high-mobility group box 1 (HMGB1). These results could help in developing antimicrobial peptides with better anticancer activity and induced immunogenic cell death in therapeutic applications.
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Affiliation(s)
- Yu-Huan Cheah
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
| | - Chun-Yu Liu
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
| | - Bak-Sau Yip
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
- Department of Neurology, National Taiwan University Hospital Hsinchu Branch, Hsinchu 300, Taiwan
| | - Chih-Lung Wu
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
| | - Kuang-Li Peng
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
| | - Jya-Wei Cheng
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-H.C.); (C.-Y.L.); (B.-S.Y.); (C.-L.W.); (K.-L.P.)
- Correspondence: ; Tel.: +886-3-5742763; Fax: +886-3-5715934
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15
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Topalova Y, Belouhova M, Velkova L, Dolashki A, Zheleva N, Daskalova E, Kaynarov D, Voelter W, Dolashka P. Effect and Mechanisms of Antibacterial Peptide Fraction from Mucus of C. aspersum against Escherichia coli NBIMCC 8785. Biomedicines 2022; 10:biomedicines10030672. [PMID: 35327474 PMCID: PMC8945727 DOI: 10.3390/biomedicines10030672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 01/27/2023] Open
Abstract
Peptides isolated from the mucus of Cornu aspersum could be prototypes for antibiotics against pathogenic bacteria. Information regarding the mechanisms, effective concentration, and methods of application is an important tool for therapeutic, financial, and ecological regulation and a holistic approach to medical treatment. A peptide fraction with MW < 10 kDa was analyzed by MALDI-TOF-TOF using Autoflex™ III. The strain Escherichia coli NBIMCC 8785 (18 h and 48 h culture) was used. The changes in bacterial structure and metabolic activity were investigated by SEM, fluorescent, and digital image analysis. This peptide fraction had high inhibitory effects in surface and deep inoculations of E. coli of 1990.00 and 136.13 mm2/mgPr/µMol, respectively, in the samples. Thus, it would be effective in the treatment of infections involving bacterial biofilms and homogenous cells. Various deformations of the bacteria and inhibition of its metabolism were discovered and illustrated. The data on the mechanisms of impact of the peptides permitted the formulation of an algorithm for the treatment of infections depending on the phase of their development. The decrease in the therapeutic concentrations will be more sparing to the environment and will lead to a decrease in the cost of the treatment.
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Affiliation(s)
- Yana Topalova
- Faculty of Biology, Sofia University, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria; (M.B.); (E.D.)
- Correspondence: or (Y.T.); or (P.D.); Tel.: +359-887193423 (P.D.)
| | - Mihaela Belouhova
- Faculty of Biology, Sofia University, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria; (M.B.); (E.D.)
| | - Lyudmila Velkova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 9, 1113 Sofia, Bulgaria; (L.V.); (A.D.); (D.K.)
| | - Aleksandar Dolashki
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 9, 1113 Sofia, Bulgaria; (L.V.); (A.D.); (D.K.)
| | - Nellie Zheleva
- Faculty of Physics, Sofia University, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria;
| | - Elmira Daskalova
- Faculty of Biology, Sofia University, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria; (M.B.); (E.D.)
| | - Dimitar Kaynarov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 9, 1113 Sofia, Bulgaria; (L.V.); (A.D.); (D.K.)
| | - Wolfgang Voelter
- Institute of Biochemistry, University of Tübingen, Hoppe-Seyler-Straße 4, D-72076 Tübingen, Germany;
| | - Pavlina Dolashka
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 9, 1113 Sofia, Bulgaria; (L.V.); (A.D.); (D.K.)
- Correspondence: or (Y.T.); or (P.D.); Tel.: +359-887193423 (P.D.)
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16
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Yuan Y, Li S, Zhao Z, Deng B, Li Z, Jing X, Zhang W, Li Z. In vitro and in vivo antibacterial activity of a lysine-rich scorpion peptide derivative. Toxicon 2022; 209:1-9. [PMID: 35121065 DOI: 10.1016/j.toxicon.2022.01.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 01/09/2022] [Accepted: 01/27/2022] [Indexed: 01/19/2023]
Abstract
Antimicrobial peptides are widely acknowledged as an alternative class of antimicrobial agents. In this study, a lysine-rich scorpion peptide derivative Pacavin-5K was designed, which showed an improved antibacterial spectrum, significantly higher antibacterial activity, and lower toxicity compared to the native peptide. It also showed an improved thermal and serum stability. Notably, Pacavin-5K significantly decreased the bacterial counts in the wounded region in the mouse cutaneous infection model caused by Staphylococcus aureus and Pseudomonas aeruginosa. Moreover, Pacavin-5K did not induce bacterial resistance associated with its antibacterial mechanism disrupting the membrane. Furthermore, Pacavin-5K could kill the S. aureus cells at the biofilm state. Overall, Pacavin-5K could be a potential alternative antibacterial agent against skin infection caused by S. aureus and P. aeruginosa.
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Affiliation(s)
- Yaping Yuan
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Shasha Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Zhuoran Zhao
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Bo Deng
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Ziyi Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Xiaoyuan Jing
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Wenlu Zhang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Zhongjie Li
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China.
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17
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Zhu Y, Hao W, Wang X, Ouyang J, Deng X, Yu H, Wang Y. Antimicrobial peptides, conventional antibiotics, and their synergistic utility for the treatment of drug-resistant infections. Med Res Rev 2022; 42:1377-1422. [PMID: 34984699 DOI: 10.1002/med.21879] [Citation(s) in RCA: 87] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 12/09/2021] [Accepted: 12/23/2021] [Indexed: 12/13/2022]
Abstract
Antimicrobial peptides (AMPs), also known as host defense peptides (HDPs), are important effector immune defense molecules in multicellular organisms. AMPs exert their antimicrobial activities through several mechanisms; thus far, induction of drug resistance through AMPs has been regarded as unlikely. Therefore, they have great potential as new generation antimicrobial agents. To date, more than 30 AMP-related drugs are in the clinical trial phase. In recent years, studies show that some AMPs and conventional antibiotics have synergistic effects. The combined use of AMPs and antibiotics can kill drug-resistant pathogens, prevent drug resistance, and significantly improve the therapeutic effects of antibiotics. In this review, we discuss the progress in synergistic studies on AMPs and conventional antibiotics. An overview of the current understanding of the functional scope of AMPs, ongoing clinical trials, and challenges in the development processes are also presented.
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Affiliation(s)
- Yiyun Zhu
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Weijing Hao
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xia Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Jianhong Ouyang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xinyi Deng
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Haining Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Yipeng Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
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18
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Zharkova MS, Golubeva OY, Orlov DS, Vladimirova EV, Dmitriev AV, Tossi A, Shamova OV. Silver Nanoparticles Functionalized With Antimicrobial Polypeptides: Benefits and Possible Pitfalls of a Novel Anti-infective Tool. Front Microbiol 2021; 12:750556. [PMID: 34975782 PMCID: PMC8719061 DOI: 10.3389/fmicb.2021.750556] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) and antimicrobial peptides or proteins (AMPs/APs) are both considered as promising platforms for the development of novel therapeutic agents effective against the growing number of drug-resistant pathogens. The observed synergy of their antibacterial activity suggested the prospect of introducing antimicrobial peptides or small antimicrobial proteins into the gelatinized coating of AgNPs. Conjugates with protegrin-1, indolicidin, protamine, histones, and lysozyme were comparatively tested for their antibacterial properties and compared with unconjugated nanoparticles and antimicrobial polypeptides alone. Their toxic effects were similarly tested against both normal eukaryotic cells (human erythrocytes, peripheral blood mononuclear cells, neutrophils, and dermal fibroblasts) and tumor cells (human erythromyeloid leukemia K562 and human histiocytic lymphoma U937 cell lines). The AMPs/APs retained their ability to enhance the antibacterial activity of AgNPs against both Gram-positive and Gram-negative bacteria, including drug-resistant strains, when conjugated to the AgNP surface. The small, membranolytic protegrin-1 was the most efficient, suggesting that a short, rigid structure is not a limiting factor despite the constraints imposed by binding to the nanoparticle. Some of the conjugated AMPs/APs clearly affected the ability of nanoparticle to permeabilize the outer membrane of Escherichia coli, but none of the conjugated AgNPs acquired the capacity to permeabilize its cytoplasmic membrane, regardless of the membranolytic potency of the bound polypeptide. Low hemolytic activity was also found for all AgNP-AMP/AP conjugates, regardless of the hemolytic activity of the free polypeptides, making conjugation a promising strategy not only to enhance their antimicrobial potential but also to effectively reduce the toxicity of membranolytic AMPs. The observation that metabolic processes and O2 consumption in bacteria were efficiently inhibited by all forms of AgNPs is the most likely explanation for their rapid and bactericidal action. AMP-dependent properties in the activity pattern of various conjugates toward eukaryotic cells suggest that immunomodulatory, wound-healing, and other effects of the polypeptides are at least partially transferred to the nanoparticles, so that functionalization of AgNPs may have effects beyond just modulation of direct antibacterial activity. In addition, some conjugated nanoparticles are selectively toxic to tumor cells. However, caution is required as not all modulatory effects are necessarily beneficial to normal host cells.
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Affiliation(s)
- Maria S. Zharkova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Olga Yu. Golubeva
- Laboratory of the Nanostructures Research, Institute of Silicate Chemistry, Russian Academy of Sciences, Saint Petersburg, Russia
| | - Dmitriy S. Orlov
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Elizaveta V. Vladimirova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alexander V. Dmitriev
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alessandro Tossi
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Olga V. Shamova
- World-Class Research Center “Center for Personalized Medicine”, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
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19
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Wu CL, Peng KL, Yip BS, Chih YH, Cheng JW. Boosting Synergistic Effects of Short Antimicrobial Peptides With Conventional Antibiotics Against Resistant Bacteria. Front Microbiol 2021; 12:747760. [PMID: 34733262 PMCID: PMC8558513 DOI: 10.3389/fmicb.2021.747760] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/27/2021] [Indexed: 01/10/2023] Open
Abstract
The global spread of antibiotic-resistant infections has meant that there is an urgent need to develop new antimicrobial alternatives. In this study, we developed a strategy to boost and/or synergize the activity of conventional antibiotics by combination with antimicrobial peptides tagged with the bulky non-natural amino acid β-naphthylalanine (Nal) to their N- or C-terminus. A checkerboard method was used to evaluate synergistic effects of the parent peptide and the Nal-tagged peptides. Moreover, boron-dipyrro-methene labeled vancomycin was used to characterize the synergistic mechanism of action between the peptides and vancomycin on the bacterial strains. These Nal-tagged antimicrobial peptides also reduced the antibiotic-induced release of lipopolysaccharide from Gram-negative bacteria by more than 99.95%. Our results demonstrate that Nal-tagged peptides could help in developing antimicrobial peptides that not only have enhanced antibacterial activities but also increase the synergistic effects with conventional antibiotics against antibiotic-resistant bacteria.
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Affiliation(s)
- Chih-Lung Wu
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Kuang-Li Peng
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Bak-Sau Yip
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan.,Department of Neurology, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
| | - Ya-Han Chih
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Jya-Wei Cheng
- Department of Medical Science, Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
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20
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Evaluation of ceftazidime/avibactam alone and in combination with amikacin, colistin and tigecycline against Klebsiella pneumoniae carbapenemase-producing K. pneumoniae by in vitro time-kill experiment. PLoS One 2021; 16:e0258426. [PMID: 34648556 PMCID: PMC8516195 DOI: 10.1371/journal.pone.0258426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/28/2021] [Indexed: 11/19/2022] Open
Abstract
Klebsiella pneumoniae carbapenemase-producing K. pneumoniae (KPC-Kp) poses a major threat to human health worldwide. Combination therapies of antibiotics with different mechanisms have been recommended in literatures. This study assessed in vitro antibacterial activities and synergistic activities of ceftazidime/avibactam alone and in combinations against KPC-Kp. In total, 70 isolates from 2 hospitals in Beijing were examined in our study. By using the agar dilution method and broth dilution method, we determined the minimum inhibitory concentration (MIC) of candidate antibiotics. Ceftazidime/avibactam demonstrated promising susceptibility against KPC-Kp (97.14%). Synergistic activities testing was achieved by checkerboard method and found ceftazidime/avibactam-amikacin displayed synergism in 90% isolates. Ceftazidime/avibactam-colistin displayed partial synergistic in 43% isolates, and ceftazidime/avibactam-tigecycline displayed indifference in 67% isolates. In time-kill assays, antibiotics at 1-fold MIC were mixed with bacteria at 1 × 105 CFU/ml and Mueller-Hinton broth (MHB). Combinations of ceftazidime/avibactam with amikacin and tigecycline displayed better antibacterial effects than single drug. Ceftazidime/avibactam-colistin combination did not exhibit better effect than single drug. In KPC-Kp infections, susceptibility testing suggested that ceftazidime/avibactam may be considered as first-line choice. However, monotherapy is often inadequate in infection management. Thus, our study revealed that combination therapy including ceftazidime/avibactam colistin and ceftazidime/avibactam tigecycline may benefit than monotherapy in KPC-Kp treatment. Further pharmacokinetic/pharmacodynamic and mutant prevention concentration studies should be performed to optimize multidrug-regimens.
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21
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Ganan M, Lorentzen SB, Gaustad P, Sørlie M. Synergistic Antifungal Activity of Chito-Oligosaccharides and Commercial Antifungals on Biofilms of Clinical Candida Isolates. J Fungi (Basel) 2021; 7:718. [PMID: 34575756 PMCID: PMC8464920 DOI: 10.3390/jof7090718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/11/2021] [Accepted: 08/27/2021] [Indexed: 01/09/2023] Open
Abstract
The development of yeast biofilms is a major problem due to their increased antifungal resistance, which leads to persistent infections with severe clinical implications. The high antifungal activity of well-characterized chitosan polymers makes them potential alternatives for treating yeast biofilms. The activity of a chito-oligosaccharide with a depolymerization degree (DPn) of 32 (C32) and a fraction of acetylation (FA) of 0.15 on Candida sp. biofilms was studied. The results showed a concentration-dependent reduction in the number of viable cells present in C. albicans, C. glabrata, and C. guillermondii preformed biofilms in the presence of C32, especially on intermediate and mature biofilms. A significant decrease in the metabolic activity of yeast biofilms treated with C32 was also observed. The antifungals fluconazole (Flu) and miconazole (Mcz) decreased the number of viable cells in preformed early biofilms, but not in the intermediate or mature biofilms. Contrary to Flu or Mcz, C32 also reduced the formation of new biofilms. Interestingly, a synergistic effect on yeast biofilm was observed when C32 and Flu/Mcz were used in combination. C32 has the potential to become an alternative therapeutic agent against Candida biofilms alone or in combination with antifungal drugs and this will reduce the use of antifungals and decrease antifungal resistance.
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Affiliation(s)
- Monica Ganan
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences (NMBU), 1432 Aas, Norway; (M.G.); (S.B.L.)
- Department of Microbiology, Institute of Clinical Medicine, University of Oslo and Fürst Medical Laboratory, 0154 Oslo, Norway;
| | - Silje B. Lorentzen
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences (NMBU), 1432 Aas, Norway; (M.G.); (S.B.L.)
| | - Peter Gaustad
- Department of Microbiology, Institute of Clinical Medicine, University of Oslo and Fürst Medical Laboratory, 0154 Oslo, Norway;
| | - Morten Sørlie
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences (NMBU), 1432 Aas, Norway; (M.G.); (S.B.L.)
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22
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Synergistic effect and antibiofilm activity of an antimicrobial peptide with traditional antibiotics against multi-drug resistant bacteria. Microb Pathog 2021; 158:105056. [PMID: 34153416 DOI: 10.1016/j.micpath.2021.105056] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/10/2023]
Abstract
Combined treatment of AMPs with classical antibiotics has gained interest because it often results in a synergistic antibacterial effect. We demonstrated here that Pt5-1c, an AMP derived from phosvitin, had antibacterial activity against the MDR bacteria (S. aureus USA500, E. coli 577 and K. pneumoniae 2182) in the presence of serum. On this basis, we showed that Pt5-1c was synergistically active with traditional antibiotics (oxacillin, vancomycin, streptomycin and azithromycin) against the three MDR bacteria growing as biofilms in vitro and in vivo. Moreover, Pt5-1c restored sensitivity of S. aureus USA500 to oxacillin and vancomycin, E. coli 577 to streptomycin and K. pneumoniae 2182 to azithromycin. Importantly, long-term exposure to Pt5-1c did not give rise to antimicrobial resistance. Collectively, these data not only suggest a promising combinatorial therapy strategy to combat antibiotics-tolerant infections but also present a possibility of Pt5-1c being used to prolong the application of antibiotics including oxacillin, vancomycin, streptomycin and azithromycin, that are under threat of becoming ineffective due to antibiotic resistance.
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23
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Thompson Z, Greve JM, Cowan JA. Enhanced Synergism and Mechanism of Action Studies of Synthetic Antimicrobial Metallopeptides. ChemMedChem 2021; 16:2112-2120. [PMID: 33825350 DOI: 10.1002/cmdc.202100063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Indexed: 11/08/2022]
Abstract
Antimicrobial peptides (AMPs) are found throughout most kingdoms of life, are an important part of host immunity, and have been shown to act synergistically in various organisms to ameliorate bacterial infections. Herein, we report the synergistic behavior observed between two AMPs, Sub5 and CP10A, against E. coli. In addition, enhanced synergistic activity against E. coli and MRSA 43300 for two derivatives of Sub5, extended with the amino-terminal copper and nickel (ATCUN) binding motif, is observed when dosed together with CP10A, while displaying little cytotoxicity towards human dermal fibroblasts. All three combinations of peptides co-localized within bacterial cells as evidenced by fluorescence confocal microscopy. Investigations into the mechanism of synergy shows that all peptides indirectly damage DNA within cells, while only the ATCUN derivatives can oxidize phospholipids. Combinations of peptides were also shown to upregulate the concentration of reactive oxygen species within both E. coli and MRSA 43300. These results suggest that the production of reactive oxygen species is an important aspect mechanistically and further highlights the potential of these metallopeptides to aid in the treatment of antibiotic-resistant infections.
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Affiliation(s)
- Zechariah Thompson
- Chemistry and Biochemistry, The Ohio State University, Evans Laboratory of Chemistry 100, West 18th Avenue, Columbus, Ohio, 43210, USA
| | - Jenna M Greve
- Chemistry and Biochemistry, The Ohio State University, Evans Laboratory of Chemistry 100, West 18th Avenue, Columbus, Ohio, 43210, USA
| | - James Allan Cowan
- Chemistry and Biochemistry, The Ohio State University, Evans Laboratory of Chemistry 100, West 18th Avenue, Columbus, Ohio, 43210, USA
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24
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Li J, Hu S, Jian W, Xie C, Yang X. Plant antimicrobial peptides: structures, functions, and applications. BOTANICAL STUDIES 2021; 62:5. [PMID: 33914180 PMCID: PMC8085091 DOI: 10.1186/s40529-021-00312-x] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/13/2021] [Indexed: 05/20/2023]
Abstract
Antimicrobial peptides (AMPs) are a class of short, usually positively charged polypeptides that exist in humans, animals, and plants. Considering the increasing number of drug-resistant pathogens, the antimicrobial activity of AMPs has attracted much attention. AMPs with broad-spectrum antimicrobial activity against many gram-positive bacteria, gram-negative bacteria, and fungi are an important defensive barrier against pathogens for many organisms. With continuing research, many other physiological functions of plant AMPs have been found in addition to their antimicrobial roles, such as regulating plant growth and development and treating many diseases with high efficacy. The potential applicability of plant AMPs in agricultural production, as food additives and disease treatments, has garnered much interest. This review focuses on the types of plant AMPs, their mechanisms of action, the parameters affecting the antimicrobial activities of AMPs, and their potential applications in agricultural production, the food industry, breeding industry, and medical field.
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Affiliation(s)
- Junpeng Li
- College of Life Science, Chongqing Normal University, Chongqing, 401331, China
| | - Shuping Hu
- College of Life Science, Chongqing Normal University, Chongqing, 401331, China
| | - Wei Jian
- College of Life Science, Chongqing Normal University, Chongqing, 401331, China
| | - Chengjian Xie
- College of Life Science, Chongqing Normal University, Chongqing, 401331, China.
| | - Xingyong Yang
- College of Life Science, Chongqing Normal University, Chongqing, 401331, China.
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25
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Cyanobacteria and Eukaryotic Microalgae as Emerging Sources of Antibacterial Peptides. Molecules 2020; 25:molecules25245804. [PMID: 33316949 PMCID: PMC7763478 DOI: 10.3390/molecules25245804] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/03/2020] [Accepted: 12/07/2020] [Indexed: 12/17/2022] Open
Abstract
Cyanobacteria and microalgae are oxygen-producing photosynthetic unicellular organisms encompassing a great diversity of species, which are able to grow under all types of extreme environments and exposed to a wide variety of predators and microbial pathogens. The antibacterial compounds described for these organisms include alkaloids, fatty acids, indoles, macrolides, peptides, phenols, pigments and terpenes, among others. This review presents an overview of antibacterial peptides isolated from cyanobacteria and microalgae, as well as their synergism and mechanisms of action described so far. Antibacterial cyanopeptides belong to different orders, but mainly from Oscillatoriales and Nostocales. Cyanopeptides have different structures but are mainly cyclic peptides. This vast peptide repertoire includes ribosomal and abundant non-ribosomal peptides, evaluated by standard conventional methodologies against pathogenic Gram-negative and Gram-positive bacteria. The antibacterial activity described for microalgal peptides is considerably scarcer, and limited to protein hydrolysates from two Chlorella species, and few peptides from Tetraselmis suecica. Despite the promising applications of antibacterial peptides and the importance of searching for new natural sources of antibiotics, limitations still persist for their pharmaceutical applications.
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26
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Li Z, Yuan Y, Li S, Deng B, Wang Y. Antibacterial activity of a scorpion-derived peptide and its derivatives in vitro and in vivo. Toxicon 2020; 186:35-41. [PMID: 32768440 DOI: 10.1016/j.toxicon.2020.07.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 02/04/2023]
Abstract
Antimicrobial peptides have recently become extremely popular as a novel class of antimicrobial agents. AMP MK049518 (FLGLLGSVLGSVLPSIFK), identified from the crab-scorpion Didymocentrus krausi, only possesses significant antibacterial activity against Gram-positive bacteria. In this study, a derivative G2K-S3K was designed with an excellent antibacterial spectrum and significantly higher antibacterial activity compared to the natural peptide. G2K-S3K also demonstrated excellent serum- and thermal-stability and did not induce bacterial resistance. In the Staphylococcus aureus and Pseudomonas aeruginosa -induced skin infection in mice, G2K-S3K significantly decreased bacterial counts in the wound by topical application. Thus, G2K-S3K could be a potent topical anti-infective agent against the skin infection caused by S. aureus and P. aeruginosa.
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Affiliation(s)
- Zhongjie Li
- Medical College, Henan University of Science and Technology, Luoyang, 471003, China.
| | - Yaping Yuan
- Medical College, Henan University of Science and Technology, Luoyang, 471003, China
| | - Shasha Li
- Medical College, Henan University of Science and Technology, Luoyang, 471003, China
| | - Bo Deng
- Medical College, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yong Wang
- Medical College, Henan University of Science and Technology, Luoyang, 471003, China
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27
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Liu J, Chen F, Wang X, Peng H, Zhang H, Wang KJ. The Synergistic Effect of Mud Crab Antimicrobial Peptides Sphistin and Sph 12-38 With Antibiotics Azithromycin and Rifampicin Enhances Bactericidal Activity Against Pseudomonas Aeruginosa. Front Cell Infect Microbiol 2020; 10:572849. [PMID: 33194811 PMCID: PMC7645104 DOI: 10.3389/fcimb.2020.572849] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/02/2020] [Indexed: 12/16/2022] Open
Abstract
Overuse or abuse of antibiotics has undoubtedly accelerated the increasing prevalence of global antibiotic resistance crisis, and thus, people have been trying to explore approaches to decrease dosage of antibiotics or find new antibacterial agents for many years. Antimicrobial peptides (AMPs) are the ideal candidates that could kill pathogens and multidrug-resistant bacteria either alone or in combination with conventional antibiotics. In the study, the antimicrobial efficacy of mud crab Scylla paramamosain AMPs Sphistin and Sph12−38 in combination with eight selected antibiotics was evaluated using a clinical pathogen, Pseudomonas aeruginosa. It was interesting to note that the in vitro combination of rifampicin and azithromycin with Sphistin and Sph12−38 showed significant synergistic activity against P. aeruginosa. Moreover, an in vivo study was carried out using a mouse model challenged with P. aeruginosa, and the result showed that the combination of Sph12−38 with either rifampicin or azithromycin could significantly promote the healing of wounds and had the healing time shortened to 4–5 days compared with 7–8 days in control. The underlying mechanism might be due to the binding of Sphistin and Sph12−38 with P. aeruginosa lipopolysaccharides (LPS) and subsequent promotion of the intracellular uptake of rifampicin and azithromycin. Taken together, the significant synergistic antibacterial effect on P. aeruginosa in vitro and in vivo conferred by the combination of low dose of Sphistin and Sph12−38 with low dose of rifampicin and azithromycin would be beneficial for the control of antibiotic resistance and effective treatment of P. aeruginosa-infected diseases in the future.
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Affiliation(s)
- Jie Liu
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
| | - Fangyi Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China.,State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
| | - Xiaofei Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
| | - Hui Peng
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China.,State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
| | - Hua Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
| | - Ke-Jian Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China.,State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
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28
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León-Buitimea A, Garza-Cárdenas CR, Garza-Cervantes JA, Lerma-Escalera JA, Morones-Ramírez JR. The Demand for New Antibiotics: Antimicrobial Peptides, Nanoparticles, and Combinatorial Therapies as Future Strategies in Antibacterial Agent Design. Front Microbiol 2020; 11:1669. [PMID: 32793156 PMCID: PMC7393301 DOI: 10.3389/fmicb.2020.01669] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
The inappropriate use of antibiotics and an inadequate control of infections have led to the emergence of resistant strains which represent a major threat to public health and the global economy. Therefore, research and development of a new generation of antimicrobials to mitigate the spread of antibiotic resistance has become imperative. Current research and technology developments have promoted the improvement of antimicrobial agents that can selectively interact with a target site (e.g., a gene or a cellular process) or a specific pathogen. Antimicrobial peptides and metal nanoparticles exemplify a novel approach to treat infectious diseases. Nonetheless, combinatorial treatments have been recently considered as an excellent platform to design and develop the next generation of antibacterial agents. The combination of different drugs offers many advantages over their use as individual chemical moieties; these include a reduction in dosage of the individual drugs, fewer side effects compared to the monotherapy, reduced risk for the development of drug resistance, a better combined response compared to the effect of the individual drugs (synergistic effects), wide-spectrum antibacterial action, and the ability to attack simultaneously multiple target sites, in many occasions leading to an increased antibacterial effect. The selection of the appropriate combinatorial treatment is critical for the successful treatment of infections. Therefore, the design of combinatorial treatments provides a pathway to develop antimicrobial therapeutics with broad-spectrum antibacterial action, bactericidal instead of bacteriostatic mechanisms of action, and better efficacy against multidrug-resistant bacteria.
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Affiliation(s)
- Angel León-Buitimea
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, San Nicolás de los Garza, Mexico.,Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Parque de Investigación e Innovación Tecnológica, Universidad Autónoma de Nuevo León, Apodaca, Mexico
| | - Cesar R Garza-Cárdenas
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, San Nicolás de los Garza, Mexico.,Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Parque de Investigación e Innovación Tecnológica, Universidad Autónoma de Nuevo León, Apodaca, Mexico
| | - Javier A Garza-Cervantes
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, San Nicolás de los Garza, Mexico.,Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Parque de Investigación e Innovación Tecnológica, Universidad Autónoma de Nuevo León, Apodaca, Mexico
| | - Jordy A Lerma-Escalera
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, San Nicolás de los Garza, Mexico.,Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Parque de Investigación e Innovación Tecnológica, Universidad Autónoma de Nuevo León, Apodaca, Mexico
| | - Jose R Morones-Ramírez
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, UANL, San Nicolás de los Garza, Mexico.,Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Parque de Investigación e Innovación Tecnológica, Universidad Autónoma de Nuevo León, Apodaca, Mexico
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29
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Mercer DK, Torres MDT, Duay SS, Lovie E, Simpson L, von Köckritz-Blickwede M, de la Fuente-Nunez C, O'Neil DA, Angeles-Boza AM. Antimicrobial Susceptibility Testing of Antimicrobial Peptides to Better Predict Efficacy. Front Cell Infect Microbiol 2020; 10:326. [PMID: 32733816 PMCID: PMC7358464 DOI: 10.3389/fcimb.2020.00326] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/29/2020] [Indexed: 12/11/2022] Open
Abstract
During the development of antimicrobial peptides (AMP) as potential therapeutics, antimicrobial susceptibility testing (AST) stands as an essential part of the process in identification and optimisation of candidate AMP. Standard methods for AST, developed almost 60 years ago for testing conventional antibiotics, are not necessarily fit for purpose when it comes to determining the susceptibility of microorganisms to AMP. Without careful consideration of the parameters comprising AST there is a risk of failing to identify novel antimicrobials at a time when antimicrobial resistance (AMR) is leading the planet toward a post-antibiotic era. More physiologically/clinically relevant AST will allow better determination of the preclinical activity of drug candidates and allow the identification of lead compounds. An important consideration is the efficacy of AMP in biological matrices replicating sites of infection, e.g., blood/plasma/serum, lung bronchiolar lavage fluid/sputum, urine, biofilms, etc., as this will likely be more predictive of clinical efficacy. Additionally, specific AST for different target microorganisms may help to better predict efficacy of AMP in specific infections. In this manuscript, we describe what we believe are the key considerations for AST of AMP and hope that this information can better guide the preclinical development of AMP toward becoming a new generation of urgently needed antimicrobials.
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Affiliation(s)
| | - Marcelo D. T. Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, Penn Institute for Computational Science, and Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Searle S. Duay
- Department of Chemistry, Institute of Materials Science, University of Connecticut, Storrs, CT, United States
| | - Emma Lovie
- NovaBiotics Ltd, Aberdeen, United Kingdom
| | | | | | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, Penn Institute for Computational Science, and Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | | | - Alfredo M. Angeles-Boza
- Department of Chemistry, Institute of Materials Science, University of Connecticut, Storrs, CT, United States
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30
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Si Z, Lim HW, Tay MYF, Du Y, Ruan L, Qiu H, Zamudio‐Vazquez R, Reghu S, Chen Y, Tiong WS, Marimuthu K, De PP, Ng OT, Zhu Y, Gan Y, Chi YR, Duan H, Bazan GC, Greenberg EP, Chan‐Park MB, Pethe K. A Glycosylated Cationic Block Poly(β‐peptide) Reverses Intrinsic Antibiotic Resistance in All ESKAPE Gram‐Negative Bacteria. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhangyong Si
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Hui Wen Lim
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 636921 Singapore
| | - Moon Y. F. Tay
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Yu Du
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Lin Ruan
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Haofeng Qiu
- Medical School of Ningbo UniversityNingbo University Ningbo 315211 China
| | - Rubí Zamudio‐Vazquez
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Sheethal Reghu
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Yahua Chen
- Department of BiochemistryNational University of Singapore Singapore 117596 Singapore
| | - Wen Shuo Tiong
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 636921 Singapore
| | - Kalisvar Marimuthu
- Tan Tock Seng Hospital Singapore 308433 Singapore
- Yong Loo Lin School of MedicineNational University of Singapore Singapore 119228 Singapore
- National Centre for Infectious Diseases Singapore
| | | | - Oon Tek Ng
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 636921 Singapore
- Tan Tock Seng Hospital Singapore 308433 Singapore
- National Centre for Infectious Diseases Singapore
| | - Yabin Zhu
- Medical School of Ningbo UniversityNingbo University Ningbo 315211 China
| | - Yunn‐Hwen Gan
- Department of BiochemistryNational University of Singapore Singapore 117596 Singapore
| | - Yonggui Robin Chi
- Division of Chemistry & Biological ChemistryNanyang Technological University Singapore 637371 Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Guillermo C. Bazan
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
- Department of Chemistry and BiochemistryUniversity of California Santa Barbara CA 93106-9510 USA
| | - E. Peter Greenberg
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
- Department of MicrobiologyUniversity of Washington Seattle WA 98195 USA
| | - Mary B. Chan‐Park
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 636921 Singapore
| | - Kevin Pethe
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 636921 Singapore
- School of Biological SciencesNanyang Technological University Singapore 637551 Singapore
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31
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Si Z, Lim HW, Tay MYF, Du Y, Ruan L, Qiu H, Zamudio-Vazquez R, Reghu S, Chen Y, Tiong WS, Marimuthu K, De PP, Ng OT, Zhu Y, Gan YH, Chi YR, Duan H, Bazan GC, Greenberg EP, Chan-Park MB, Pethe K. A Glycosylated Cationic Block Poly(β-peptide) Reverses Intrinsic Antibiotic Resistance in All ESKAPE Gram-Negative Bacteria. Angew Chem Int Ed Engl 2020; 59:6819-6826. [PMID: 32011781 DOI: 10.1002/anie.201914304] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/07/2020] [Indexed: 02/02/2023]
Abstract
Carbapenem-resistant Gram-negative bacteria (GNB) are heading the list of pathogens for which antibiotics are the most critically needed. Many antibiotics are either unable to penetrate the outer-membrane or are excluded by efflux mechanisms. Here, we report a cationic block β-peptide (PAS8-b-PDM12) that reverses intrinsic antibiotic resistance in GNB by two distinct mechanisms of action. PAS8-b-PDM12 does not only compromise the integrity of the bacterial outer-membrane, it also deactivates efflux pump systems by dissipating the transmembrane electrochemical potential. As a result, PAS8-b-PDM12 sensitizes carbapenem- and colistin-resistant GNB to multiple antibiotics in vitro and in vivo. The β-peptide allows the perfect alternation of cationic versus hydrophobic side chains, representing a significant improvement over previous antimicrobial α-peptides sensitizing agents. Together, our results indicate that it is technically possible for a single adjuvant to reverse innate antibiotic resistance in all pathogenic GNB of the ESKAPE group, including those resistant to last resort antibiotics.
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Affiliation(s)
- Zhangyong Si
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Hui Wen Lim
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore
| | - Moon Y F Tay
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Yu Du
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Lin Ruan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Haofeng Qiu
- Medical School of Ningbo University, Ningbo University, Ningbo, 315211, China
| | - Rubí Zamudio-Vazquez
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Sheethal Reghu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Yahua Chen
- Department of Biochemistry, National University of Singapore, Singapore, 117596, Singapore
| | - Wen Shuo Tiong
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore
| | - Kalisvar Marimuthu
- Tan Tock Seng Hospital, Singapore, 308433, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Singapore.,National Centre for Infectious Diseases, Singapore
| | | | - Oon Tek Ng
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore.,Tan Tock Seng Hospital, Singapore, 308433, Singapore.,National Centre for Infectious Diseases, Singapore
| | - Yabin Zhu
- Medical School of Ningbo University, Ningbo University, Ningbo, 315211, China
| | - Yunn-Hwen Gan
- Department of Biochemistry, National University of Singapore, Singapore, 117596, Singapore
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, Nanyang Technological University, Singapore, 637371, Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Guillermo C Bazan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore.,Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106-9510, USA
| | - E Peter Greenberg
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore.,Department of Microbiology, University of Washington, Seattle, WA, 98195, USA
| | - Mary B Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore
| | - Kevin Pethe
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
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32
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Antimicrobial Activity of Protein Fraction from Naja ashei Venom Against Staphylococcus epidermidis. Molecules 2020; 25:molecules25020293. [PMID: 31936872 PMCID: PMC7024148 DOI: 10.3390/molecules25020293] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/04/2020] [Accepted: 01/08/2020] [Indexed: 01/10/2023] Open
Abstract
One of the key problems of modern infectious disease medicine is the growing number of drug-resistant and multi-drug-resistant bacterial strains. For this reason, many studies are devoted to the search for highly active antimicrobial substances that could be used in therapy against bacterial infections. As it turns out, snake venoms are a rich source of proteins that exert a strong antibacterial effect, and therefore they have become an interesting research material. We analyzed Naja ashei venom for such antibacterial properties, and we found that a specific composition of proteins can act to eliminate individual bacterial cells, as well as the entire biofilm of Staphylococcus epidermidis. In general, we used ion exchange chromatography (IEX) to obtain 10 protein fractions with different levels of complexity, which were then tested against certified and clinical strains of S. epidermidis. One of the fractions (F2) showed exceptional antimicrobial effects both alone and in combination with antibiotics. The protein composition of the obtained fractions was determined using mass spectrometry techniques, indicating a high proportion of phospholipases A2, three-finger toxins, and L-amino acids oxidases in F2 fraction, which are most likely responsible for the unique properties of this fraction. Moreover, we were able to identify a new group of low abundant proteins containing the Ig-like domain that have not been previously described in snake venoms.
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Isayenko OY. Synergistic activity of filtrates of Lactobacillus rhamnosus and Saccharomyces boulardii and antibacterial preparations against Corynebacterium spp. REGULATORY MECHANISMS IN BIOSYSTEMS 2019. [DOI: 10.15421/021966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
We present the results of the first study of the combined influence of the biologically active substances Lactobacillus rhamnosus GG ATCC 53103 and Saccharomyces boulardii, obtained by the author’s method, and antibacterial agents on Corynebacterium spp. The first area of research was the study of increasing the sensitivity of toxigenic microorganisms to antimicrobial drugs due to the consecutive effects of the structural components and metabolites of L. rhamnosus GG and S. boulardii and antibacterial drugs on Corynebacterium spp. tox+. The greatest increase in the sensitivity of test-cultures of corynebacteria to penicillin (by 19.4 mm), imipenem (by 15.0 mm), vancomycin (by 12.0 mm), gentamicin (by 11.0 mm), ciprofloxacin (by 9.8 mm), erythromycin (by 9.6 mm), cefotaxime (by 9.5 mm) occurred due to the products of lactobacteria and a combination of metabolites of lactobacteria and saccharomycetes. The second area of research was the study of the synergic activity of substances L. rhamnosus GG and S. boulardii and traditional antibacterial drugs manifested by their simultaneous effect on Corynebacterium spp. Maximum potentiation of azithromycin (by 4.6 mm), erythromycin (by 4.5 mm), cefotaxime (by 2.2 mm), ceftriaxone (by 1.6 mm) and ampicillin (by 1.0 mm) relative to corynebacteria was also observed under the influence of lactobacteria metabolites and a combination of lactobacteria and saccharomycetes metabolites. Different degrees of manifestation of the combined action of biologically active substances L. rhamnosus GG and S. boulardii with antibiotics were determined, which depended on the selected combinations, the method of influence on the microorganism, the individual sensitivity of the test-cultures, the activity of the test filtrates and the initial concentration of the producers used to obtain the products of vital activity of lactobacteria and saccharomyces. The presented complexes of structural components and metabolites of L. rhamnosus GG and S. boulardii, obtained without the use of traditional nutrient media, by increasing the bioavailability of pathogenic pathogens can reduce the required concentration of the antibiotic, continuing their use, and suspend the likelihood of pathogens developing resistance to microorganisms. This makes them promising candidates both for the development of "accompaniment-preparations" for antibiotics for the additional therapy of infectious diseases of different etiology, and for the creation of a new direction of antimicrobial agents with multifunctional capabilities. Synergistic activity of filtrates L. rhamnosus GG and S. boulardii and antibacterial preparations against Corynebacterium spp.
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Mijiti Y, Abulimiti A, Obulkasim A, Mirzaakhmedov SY, Ziyavitdinov DF, Yili A, Salikhov SI, Aisa HA. Isolation and Characterization of a New Antimicrobial Peptide from Pimpinella anisum Seeds. Chem Nat Compd 2019. [DOI: 10.1007/s10600-019-02844-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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35
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Zharkova MS, Orlov DS, Golubeva OY, Chakchir OB, Eliseev IE, Grinchuk TM, Shamova OV. Application of Antimicrobial Peptides of the Innate Immune System in Combination With Conventional Antibiotics-A Novel Way to Combat Antibiotic Resistance? Front Cell Infect Microbiol 2019; 9:128. [PMID: 31114762 PMCID: PMC6503114 DOI: 10.3389/fcimb.2019.00128] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 04/10/2019] [Indexed: 01/10/2023] Open
Abstract
Rapidly growing resistance of pathogenic bacteria to conventional antibiotics leads to inefficiency of traditional approaches of countering infections and determines the urgent need for a search of fundamentally new anti-infective drugs. Antimicrobial peptides (AMPs) of the innate immune system are promising candidates for a role of such novel antibiotics. However, some cytotoxicity of AMPs toward host cells limits their active implementation in medicine and forces attempts to design numerous structural analogs of the peptides with optimized properties. An alternative route for the successful AMPs introduction may be their usage in combination with conventional antibiotics. Synergistic antibacterial effects have been reported for a number of such combinations, however, the molecular mechanisms of the synergy remain poorly understood and little is known whether AMPs cytotoxicy for the host cells increases upon their application with antibiotics. Our study is directed to examination of a combined action of natural AMPs with different structure and mode of action (porcine protegrin 1, caprine bactenecin ChBac3.4, human alpha- and beta-defensins (HNP-1, HNP-4, hBD-2, hBD-3), human cathelicidin LL-37), and egg white lysozyme with varied antibiotic agents (gentamicin, ofloxacin, oxacillin, rifampicin, polymyxin B, silver nanoparticles) toward selected bacteria, including drug-sensitive and drug-resistant strains, as well as toward some mammalian cells (human erythrocytes, PBMC, neutrophils, murine peritoneal macrophages and Ehrlich ascites carcinoma cells). Using “checkerboard titrations” for fractional inhibitory concentration indexes evaluation, it was found that synergy in antibacterial action mainly occurs between highly membrane-active AMPs (e.g., protegrin 1, hBD-3) and antibiotics with intracellular targets (e.g., gentamicin, rifampcin), suggesting bioavailability increase as the main model of such interaction. In some combinations modulation of dynamics of AMP-bacterial membrane interaction in presence of the antibiotic was also shown. Cytotoxic effects of the same combinations toward normal eukaryotic cells were rarely synergistic. The obtained data approve that combined application of antimicrobial peptides with antibiotics or other antimicrobials is a promising strategy for further development of new approach for combating antibiotic-resistant bacteria by usage of AMP-based therapeutics. Revealing the conventional antibiotics that increase the activity of human endogenous AMPs against particular pathogens is also important for cure strategies elaboration.
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Affiliation(s)
- Maria S Zharkova
- Laboratory of Design and Synthesis of Biologically Active Peptides, Department of General Pathology and Pathophysiology, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Dmitriy S Orlov
- Laboratory of Design and Synthesis of Biologically Active Peptides, Department of General Pathology and Pathophysiology, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Olga Yu Golubeva
- Laboratory of Nanostructures Research, Institute of Silicate Chemistry of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Oleg B Chakchir
- Nanobiotechnology Laboratory, Saint Petersburg National Research Academic University of the Russian Academy of Science, Saint Petersburg, Russia
| | - Igor E Eliseev
- Nanobiotechnology Laboratory, Saint Petersburg National Research Academic University of the Russian Academy of Science, Saint Petersburg, Russia
| | - Tatyana M Grinchuk
- Laboratory of Intracellular Signaling, Institute of Cytology of the Russian Academy of Science, Saint Petersburg, Russia
| | - Olga V Shamova
- Laboratory of Design and Synthesis of Biologically Active Peptides, Department of General Pathology and Pathophysiology, FSBSI Institute of Experimental Medicine, Saint Petersburg, Russia
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36
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Al Tall Y, Abualhaijaa A, Alsaggar M, Almaaytah A, Masadeh M, Alzoubi KH. Design and characterization of a new hybrid peptide from LL-37 and BMAP-27. Infect Drug Resist 2019; 12:1035-1045. [PMID: 31118709 PMCID: PMC6503343 DOI: 10.2147/idr.s199473] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 03/13/2019] [Indexed: 01/11/2023] Open
Abstract
Background and purpose: The world is heading to a post-antibiotic era where the treatment of bacterial infections will not be possible even with well-known last-line antibiotics. Unfortunately, the emergence of multidrug resistant bacterial strains is uncontrollable, and the humanity will face a life-threatening fate unless new antimicrobial agents with new bacterial target sites are promptly developed. Herein, we design a hybrid antimicrobial peptide (B1) from helical parts taken from the parent peptides: LL-37 and BMAP-27. The purpose of this design is to improve the potency and enhance the toxicity profile of the parent peptides. Methods: Rational design was used to hybridize two antimicrobial peptides, in which two helical parts from the bovine analog BMAP-27, and the human cathelicidin LL-37 were used to generate a novel peptide (B1). The physicochemical properties were checked using in silico methods. The antimicrobial activities were tested against nine control and resistant strains of Gram-positive and Gram-negative bacteria. On the other hand, the antibiofilm activities were tested against four resistant strains. The cytotoxicity on mammalian cells was tested using HEK293, and the hemolysis activity was also investigated on human blood. Finally, synergistic studies were performed with four conventional antibiotics against four resistant strains of Gram-positive and Gram-negative bacteria. Results: The new peptide B1 exhibited broad-spectrum activities against all tested strains. The concentration against planktonic cells ranged between 10 and 20 µM. However, 40-60 µM were needed to eradicate the biofilms. B1 showed reduced toxicity toward mammalian cells with minimal hemolysis risk. On the other hand, the synergistic studies showed improved activities for the combined conventional antibiotics with a huge reduction in their minimum inhibitory concentration values. The concentrations of B1 peptide combined with the tested antibiotics were also decreased markedly down to 0.5 µM in some cases. Conclusion: B1 is a hybrid peptide from two cathelicidin peptides. It showed an improved activity compared to parent peptides. The hybridization was successful in this study. It generated a new potent broad-spectrum antimicrobial. The toxicity profile was improved, and the synergism with the convention antibiotics showed promising results.
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Affiliation(s)
| | | | | | | | | | - Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
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37
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Drug combinations: a strategy to extend the life of antibiotics in the 21st century. Nat Rev Microbiol 2019; 17:141-155. [PMID: 30683887 DOI: 10.1038/s41579-018-0141-x] [Citation(s) in RCA: 455] [Impact Index Per Article: 91.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 11/22/2018] [Indexed: 01/03/2023]
Abstract
Antimicrobial resistance threatens a resurgence of life-threatening bacterial infections and the potential demise of many aspects of modern medicine. Despite intensive drug discovery efforts, no new classes of antibiotics have been developed into new medicines for decades, in large part owing to the stringent chemical, biological and pharmacological requisites for effective antibiotic drugs. Combinations of antibiotics and of antibiotics with non-antibiotic activity-enhancing compounds offer a productive strategy to address the widespread emergence of antibiotic-resistant strains. In this Review, we outline a theoretical and practical framework for the development of effective antibiotic combinations.
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38
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Panteleev PV, Bolosov IA, Kalashnikov AÀ, Kokryakov VN, Shamova OV, Emelianova AA, Balandin SV, Ovchinnikova TV. Combined Antibacterial Effects of Goat Cathelicidins With Different Mechanisms of Action. Front Microbiol 2018; 9:2983. [PMID: 30555455 PMCID: PMC6284057 DOI: 10.3389/fmicb.2018.02983] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022] Open
Abstract
Being essential components of innate immune system, animal antimicrobial peptides (AMPs) also known as host-defense peptides came into sharp focus as possible alternatives to conventional antibiotics due to their high efficacy against a broad range of MDR pathogens and low rate of resistance development. Mammalian species can produce a set of co-localized AMPs with different structures and mechanisms of actions. Here we examined the combined antibacterial effects of cathelicidins, structurally diverse family of host-defense peptides found in vertebrate species. As a model we have used structurally distinct cathelicidins expressed in the leukocytes of goat Capra hircus. The recombinant analogs of natural peptides were obtained by heterologous expression in bacterial system and biological activities as well as the major mechanisms of antibacterial action of the peptides were investigated. As the result, the marked synergistic effect against wide panel of bacterial strains including extensively drug-resistant ones was observed for the pair of membranolytic α-helical amphipathic peptide ChMAP-28 and Pro-rich peptide mini-ChBac7.5Nα targeting a bacterial ribosome. ChMAP-28 was shown to damage the outer bacterial membrane at sub-inhibitory concentrations that could facilitate Pro-rich peptide translocation into the cell. Finally, resistance changes under a long-term continuous selective pressure of each individual peptide and the synergistic combination of both peptides were tested against Escherichia coli strains. The combination was shown to keep a high activity after the 26-days selection experiment in contrast to mini-ChBac7.5Nα used alone and the reference antibiotic polymyxin B. We identified the point mutation leading to amino acid substitution V102E in the membrane transport protein SbmA of the mini-ChBac7.5Nα-resistant strain obtained by selection. The experiments revealed that the presence of sub-inhibitory concentrations of ChMAP-28 restored the activity of mini-ChBac7.5Nα against this strain and clinical isolate with a weak sensitivity to mini-ChBac7.5Nα. The obtained results suggest a potential medical application of synergistic combinations of natural cathelicidins, which allows using a lower therapeutic dose and minimizes the risk of resistance development.
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Affiliation(s)
- Pavel V Panteleev
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Ilia A Bolosov
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Alexander À Kalashnikov
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | | | - Olga V Shamova
- Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Anna A Emelianova
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Sergey V Balandin
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana V Ovchinnikova
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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39
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Wang J, Dou X, Song J, Lyu Y, Zhu X, Xu L, Li W, Shan A. Antimicrobial peptides: Promising alternatives in the post feeding antibiotic era. Med Res Rev 2018; 39:831-859. [PMID: 30353555 DOI: 10.1002/med.21542] [Citation(s) in RCA: 312] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/15/2022]
Abstract
Antimicrobial peptides (AMPs), critical components of the innate immune system, are widely distributed throughout the animal and plant kingdoms. They can protect against a broad array of infection-causing agents, such as bacteria, fungi, parasites, viruses, and tumor cells, and also exhibit immunomodulatory activity. AMPs exert antimicrobial activities primarily through mechanisms involving membrane disruption, so they have a lower likelihood of inducing drug resistance. Extensive studies on the structure-activity relationship have revealed that net charge, hydrophobicity, and amphipathicity are the most important physicochemical and structural determinants endowing AMPs with antimicrobial potency and cell selectivity. This review summarizes the recent advances in AMPs development with respect to characteristics, structure-activity relationships, functions, antimicrobial mechanisms, expression regulation, and applications in food, medicine, and animals.
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Affiliation(s)
- Jiajun Wang
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Xiujing Dou
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Jing Song
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Yinfeng Lyu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Xin Zhu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Lin Xu
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Weizhong Li
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Anshan Shan
- Institute of Animal Nutrition, Department of Animal Nutrition, Northeast Agricultural University, Harbin, China
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40
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Otvos L, Ostorhazi E, Szabo D, Zumbrun SD, Miller LL, Halasohoris SA, Desai PD, Int Veldt SM, Kraus CN. Synergy Between Proline-Rich Antimicrobial Peptides and Small Molecule Antibiotics Against Selected Gram-Negative Pathogens in vitro and in vivo. Front Chem 2018; 6:309. [PMID: 30155456 PMCID: PMC6102830 DOI: 10.3389/fchem.2018.00309] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/06/2018] [Indexed: 12/15/2022] Open
Abstract
As monotherapy, modified proline-rich antimicrobial peptides (PrAMPs) protect animals from experimental bacteremia in a dose-dependent manner. We evaluated the in vitro synergy of a modified PrAMP, A3-APO, a dimer, previously shown to inhibit the 70 kDa bacterial heat shock protein DnaK, with imipenem or colistin against two antibiotic-resistant pathogens; a carbapenemase-expressing Klebsiella pneumoniae strain K97/09 and Acinetobacter baumannii (ATCC BAA-1605). Combining antimicrobials resulted in synergy for PrAMP/colistin combination against both K. pneumoniae and A. baumannii (ΣFIC = 0.08 both) and additive activity for the A3-APO/imipenem combination against K. pneumoniae (ΣFIC = 0.53). Chex1-Arg20, (designated as ARV-1502 in preclinical development), the single chain PrAMP monomer of A3-APO, showed synergy with meropenem against a carbapenem-resistant uropathogenic Escherichia coli strain (ΣFIC = 0.38). In a murine bacteremia model using K97/09, A3-APO at 1 mg/kg demonstrated improved survival when co-administered with standard (10 mg/kg) or subtherapeutic (1 mg/kg) doses of colistin at 36 h (p < 0.05). Surprisingly, the survival benefit of A3-APO was augmented when the A3-APO dose was decreased by 50% to 0.5 mg/kg (p < 0.02) in conjunction with a subtherapeutic colistin dose (1 mg/kg). ARV-1502, as monotherapy demonstrated prolonged (>24 h) activity in a mouse Escherichia coli infection assay. Co-treatment with ARV-1502 and subtherapeutic doses of ceftazidime (150 mg/kg) was studied in a mouse model of melioidosis. ARV-1502 provided a 50% improvement in long-term (62 days) survival, but only at the lowest of 3 administered doses; survival advantage was demonstrated at 2.5 mg/kg but not at 5 or 10 mg/kg. The mortality benefit of combination therapies was not routinely accompanied by a parallel decline in blood or tissue bacterial counts in surviving animals, suggesting that the anti-infective activity of the host defense peptides (HDP) is broader than simply bacterial eradication. In fact, the hormetic effect observed in either animal models suggest that low dose HDP treatment may change the dominant mode of action in experimental bacteremia.
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Affiliation(s)
- Laszlo Otvos
- OLPE, LLC, Audubon, PA, United States.,Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary.,Arrevus, Inc., Raleigh, NC, United States
| | - Eszter Ostorhazi
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Dora Szabo
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Steven D Zumbrun
- Bacteriology Division, United States Army Medical Research Institute of Infectious Diseases Fort Detrick, MD, United States
| | - Lynda L Miller
- Bacteriology Division, United States Army Medical Research Institute of Infectious Diseases Fort Detrick, MD, United States
| | - Stephanie A Halasohoris
- Bacteriology Division, United States Army Medical Research Institute of Infectious Diseases Fort Detrick, MD, United States
| | - Puvi D Desai
- Bacteriology Division, United States Army Medical Research Institute of Infectious Diseases Fort Detrick, MD, United States
| | - Sharon M Int Veldt
- Bacteriology Division, United States Army Medical Research Institute of Infectious Diseases Fort Detrick, MD, United States
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41
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Andrea A, Molchanova N, Jenssen H. Antibiofilm Peptides and Peptidomimetics with Focus on Surface Immobilization. Biomolecules 2018; 8:E27. [PMID: 29772735 PMCID: PMC6022873 DOI: 10.3390/biom8020027] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/12/2018] [Accepted: 05/14/2018] [Indexed: 12/17/2022] Open
Abstract
Bacterial biofilms pose a major threat to public health, as they are associated with at least two thirds of all infections. They are highly resilient and render conventional antibiotics inefficient. As a part of the innate immune system, antimicrobial peptides have drawn attention within the last decades, as some of them are able to eradicate biofilms at sub-minimum inhibitory concentration (MIC) levels. However, peptides possess a number of disadvantages, such as susceptibility to proteolytic degradation, pH and/or salinity-dependent activity and loss of activity due to binding to serum proteins. Hence, proteolytically stable peptidomimetics were designed to overcome these drawbacks. This paper summarizes the current peptide and peptidomimetic strategies for combating bacteria-associated biofilm infections, both in respect to soluble and surface-functionalized solutions.
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Affiliation(s)
- Athina Andrea
- Department of Science and Environment, Roskilde University, Universitetsvej 1, 4000 Roskilde, Denmark.
| | - Natalia Molchanova
- Department of Science and Environment, Roskilde University, Universitetsvej 1, 4000 Roskilde, Denmark.
| | - Håvard Jenssen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, 4000 Roskilde, Denmark.
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42
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Li W, O'Brien‐Simpson NM, Holden JA, Otvos L, Reynolds EC, Separovic F, Hossain MA, Wade JD. Covalent conjugation of cationic antimicrobial peptides with a β‐lactam antibiotic core. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24059] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wenyi Li
- School of ChemistryUniversity of Melbourne VIC3010 Australia
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne VIC3010 Australia
- Leibniz‐Forschungs Institut für Molekulare PharmakologieBerlin13125 Germany
| | - Neil M. O'Brien‐Simpson
- Bio21 Institute, University of Melbourne VIC3010 Australia
- Oral Health CRC, Melbourne Dental School, University of Melbourne VIC3010 Australia
| | - James A. Holden
- Bio21 Institute, University of Melbourne VIC3010 Australia
- Oral Health CRC, Melbourne Dental School, University of Melbourne VIC3010 Australia
| | - Laszlo Otvos
- OLPE LLC., AudubonPhiladelphia Pennsylvania19403
| | - Eric C. Reynolds
- Bio21 Institute, University of Melbourne VIC3010 Australia
- Oral Health CRC, Melbourne Dental School, University of Melbourne VIC3010 Australia
| | - Frances Separovic
- School of ChemistryUniversity of Melbourne VIC3010 Australia
- Bio21 Institute, University of Melbourne VIC3010 Australia
| | - Mohammed Akhter Hossain
- School of ChemistryUniversity of Melbourne VIC3010 Australia
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne VIC3010 Australia
| | - John D. Wade
- School of ChemistryUniversity of Melbourne VIC3010 Australia
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne VIC3010 Australia
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43
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In vitro activity of minocycline combined with aminoglycosides against Klebsiella pneumoniae carbapenemase-producing K. pneumoniae. J Antibiot (Tokyo) 2018; 71:506-513. [PMID: 29416121 DOI: 10.1038/s41429-017-0024-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/03/2017] [Accepted: 12/21/2017] [Indexed: 01/05/2023]
Abstract
This study assessed the in vitro antibacterial activity of minocycline-aminoglycoside combination against Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae. Seventy non-duplicate clinical isolates of KPC-producing K. pneumoniae were collected from patients with bloodstream infections. The synergistic activity of minocycline-aminoglycoside combination was studied by the checkerboard method and time-kill assays in strains with different susceptibilities, and the mutant prevention concentration (MPC) and mutant selection window (MSW) of drugs alone and in combination were determined. The checkerboard method found this combination displayed synergistic and partial synergistic activity against aminoglycoside-susceptible isolates, but indifferent activity against aminoglycoside-resistant isolates. Time-kill assays further demonstrated strong synergistic and bactericidal effect of this combination existed against isolates which were susceptible to both drugs. But for resistant isolates, the time-kill assays showed no synergy. The MPCs of minocycline or aminoglycosides were 8- to 32-fold higher than the MICs, suggesting the MSWs of these drugs were quite wide. For the antibiotic combinations, the addition of 1×MIC concentration of amikacin or gentamicin could reduce the MPCs of minocycline by 4- to 16-fold. Generally, no mutants recovered in the plates containing 1×MIC concentration of minocycline and 2×MIC concentration of amikacin or gentamicin. In summary, these results suggest that minocycline-aminoglycoside combination can be an alternative for infections caused by KPC-producing K. pneumoniae because this combination displays strong synergistic and bactericidal activity in susceptible isolates, and can effectively prevent the emergence of resistant mutants. Further in vitro pharmacokinetic/pharmacodynamic studies and clinical trials should be performed to fully evaluate the efficacy of this drug combination.
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Rolff J, Schmid-Hempel P. Perspectives on the evolutionary ecology of arthropod antimicrobial peptides. Philos Trans R Soc Lond B Biol Sci 2017; 371:rstb.2015.0297. [PMID: 27160599 DOI: 10.1098/rstb.2015.0297] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2016] [Indexed: 12/27/2022] Open
Abstract
Antimicrobial peptides (AMPs) are important elements of the innate immune defence in multicellular organisms that target and kill microbes. Here, we reflect on the various points that are raised by the authors of the 11 contributions to a special issue of Philosophical Transactions on the 'evolutionary ecology of arthropod antimicrobial peptides'. We see five interesting topics emerging. (i) AMP genes in insects, and perhaps in arthropods more generally, evolve much slower than most other immune genes. One explanation refers to the constraints set by AMPs being part of a finely tuned defence system. A new view argues that AMPs are under strong stabilizing selection. Regardless, this striking observation still invites many more questions than have been answered so far. (ii) AMPs almost always are expressed in combinations and sometimes show expression patterns that are dependent on the infectious agent. While it is often assumed that this can be explained by synergistic interactions, such interactions have rarely been demonstrated and need to be studied further. Moreover, how to define synergy in the first place remains difficult and needs to be addressed. (iii) AMPs play a very important role in mediating the interaction between a host and its mutualistic or commensal microbes. This has only been studied in a very small number of (insect) species. It has become clear that the very same AMPs play different roles in different situations and hence are under concurrent selection. (iv) Different environments shape the physiology of organisms; especially the host-associated microbial communities should impact on the evolution host AMPs. Studies in social insects and some organisms from extreme environments seem to support this notion, but, overall, the evidence for adaptation of AMPs to a given environment is scant. (v) AMPs are considered or already developed as new drugs in medicine. However, bacteria can evolve resistance to AMPs. Therefore, in the light of our limited understanding of AMP evolution in the natural context, and also the very limited understanding of the evolution of resistance against AMPs in bacteria in particular, caution is recommended. What is clear though is that study of the ecology and evolution of AMPs in natural systems could inform many of these outstanding questions, including those related to medical applications and pathogen control.This article is part of the themed issue 'Evolutionary ecology of arthropod antimicrobial peptides'.
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Affiliation(s)
- Jens Rolff
- Evolutionary Biology, Institute of Biology, Freie Universität Berlin, Königin-Luise-Strasse 1-3, 14195 Berlin, Germany Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195 Berlin, Germany
| | - Paul Schmid-Hempel
- ETH Zürich, Institute of Integrative Biology (IBZ), ETH-Zentrum CHN, Universitätsstrasse 16, 8092 Zürich, Switzerland
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Kaur A, Chabba SK, Kaur UJ, Kaur A, Preet S, Rishi P. Management of Staphylococcus Mediated Systemic Infection by Enhancing the Resurging Activity of Co-trimoxazole in Presence of Cryptdin-2. Indian J Microbiol 2017; 57:438-447. [PMID: 29151645 DOI: 10.1007/s12088-017-0672-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 09/06/2017] [Indexed: 11/25/2022] Open
Abstract
Resurgence of sensitivity of the antibiotics, to which the pathogen had developed resistance in the past, requires special attention for strengthening the reservoir of antimicrobial compounds. Reports in the recent past have suggested that co-trimoxazole (COT) has regained its activity against methicillin resistant Staphylococcus aureus (MRSA). The present study exploited the use of COT in the presence of an antimicrobial peptide (AMP), cryptdin-2 (a murine Paneth cell alpha defensin), in order to reduce the selective pressure of the antibiotic on the pathogen. In vitro antibacterial activity and in vivo efficacy of the combination was ascertained against MRSA induced systemic infection using a murine model. Observations of the present study might help in restoring the regained activity of conventional antibiotics, such as COT, when used in combination with novel antimicrobial molecules like AMPs. This might prove as a viable strategy to eliminate the chances of re-occurrence of resistance due to their multi-prong targeting and synergistically combating infections caused by these resistant pathogens.
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Affiliation(s)
- Amrita Kaur
- Department of Microbiology, Basic Medical Sciences Block-1, Panjab University, Sector-25, South Campus, Chandigarh, India
| | - Shiv Kumar Chabba
- Department of Pathology, MVJ Medical College and Research Hospital, NH4, Dandupalya, Kolathur Post, Hoskote, Bangalore, India
| | - Ujjwal Jit Kaur
- Department of Microbiology, Basic Medical Sciences Block-1, Panjab University, Sector-25, South Campus, Chandigarh, India
| | - Arashdeep Kaur
- Department of Microbiology, Basic Medical Sciences Block-1, Panjab University, Sector-25, South Campus, Chandigarh, India
| | - Simran Preet
- Department of Biophysics, Basic Medical Sciences Block-2, Panjab University, Sector-25, South Campus, Chandigarh, India
| | - Praveen Rishi
- Department of Microbiology, Basic Medical Sciences Block-1, Panjab University, Sector-25, South Campus, Chandigarh, India
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Lainson JC, Daly SM, Triplett K, Johnston SA, Hall PR, Diehnelt CW. Synthetic Antibacterial Peptide Exhibits Synergy with Oxacillin against MRSA. ACS Med Chem Lett 2017; 8:853-857. [PMID: 28835801 PMCID: PMC5554890 DOI: 10.1021/acsmedchemlett.7b00200] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/05/2017] [Indexed: 01/25/2023] Open
Abstract
One proposed solution to the crisis of antimicrobial resistant (AMR) infections is the development of molecules that potentiate the activity of antibiotics for AMR bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). Rather than develop broad spectrum compounds, we developed a peptide that could potentiate the activity of a narrow spectrum antibiotic, oxacillin. In this way, the combination treatment could narrowly target the resistant pathogen and limit impact on host flora. We developed a peptide, ASU014, composed of a S. aureus binding peptide and a S. aureus inhibitory peptide conjugated to a branched peptide scaffold, which has modest activity against S. aureus but exhibits synergy with oxacillin for MRSA both in vitro and in a MRSA skin infection model. The low concentration of ASU014 and sub-MIC concentration of oxacillin necessary for activity suggest that this molecule is a candidate for future medicinal chemistry optimization.
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Affiliation(s)
- John C. Lainson
- Biodesign
Institute Center for Innovations in Medicine, Arizona State University, Tempe, Arizona 85281, United States
| | - Seth M. Daly
- University
of New Mexico College of Pharmacy, Albuquerque, New Mexico 87131, United States
| | - Kathleen Triplett
- University
of New Mexico College of Pharmacy, Albuquerque, New Mexico 87131, United States
| | - Stephen Albert Johnston
- Biodesign
Institute Center for Innovations in Medicine, Arizona State University, Tempe, Arizona 85281, United States
| | - Pamela R. Hall
- University
of New Mexico College of Pharmacy, Albuquerque, New Mexico 87131, United States
| | - Chris W. Diehnelt
- Biodesign
Institute Center for Innovations in Medicine, Arizona State University, Tempe, Arizona 85281, United States
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Sani MA, Carne S, Overall SA, Poulhazan A, Separovic F. One pathogen two stones: are Australian tree frog antimicrobial peptides synergistic against human pathogens? EUROPEAN BIOPHYSICS JOURNAL: EBJ 2017; 46:639-646. [PMID: 28478484 DOI: 10.1007/s00249-017-1215-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/28/2017] [Accepted: 04/24/2017] [Indexed: 01/10/2023]
Abstract
Antimicrobial peptides (AMPs) may act by targeting the lipid membranes and disrupting the bilayer structure. In this study, three AMPs from the skin of Australian tree frogs, aurein 1.2, maculatin 1.1 and caerin 1.1, were investigated against Gram-negative Escherichia coli, Gram-positive Staphylococcus aureus, and vesicles that mimic their lipid compositions. Furthermore, equimolar mixtures of the peptides were tested to identify any synergistic interactions in antimicrobial activity. Minimum inhibition concentration and minimum bactericidal concentration assays showed significant activity against S. aureus but not against E. coli. Aurein was the least active while maculatin was the most active peptide and some synergistic effects were observed against S. aureus. Circular dichroism experiments showed that, in the presence of phospholipid vesicles, the peptides transitioned from an unstructured to a predominantly helical conformation (>50%), with greater helicity for POPG/TOCL compared to POPE/POPG vesicles. The helical content, however, was less in the presence of live E. coli and S. aureus, 25 and 5%, respectively. Equimolar concentrations of the peptides did not appear to form greater supramolecular structures. Dye release assays showed that aurein required greater concentration than caerin and maculatin to disrupt the lipid bilayers, and mixtures of the peptides did not cooperate to enhance their lytic activity. Overall, aurein, maculatin, and caerin showed moderate synergy in antimicrobial activity against S. aureus without becoming more structured or enhancement of their membrane-disrupting activity in phospholipid vesicles.
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Affiliation(s)
- Marc-Antoine Sani
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia.
| | - Siobhan Carne
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Sarah A Overall
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Alexandre Poulhazan
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia
- Universite Pierre et Marie Curie (Paris VI), 4 Place Jussieu, 75252, Paris Cedex 5, France
| | - Frances Separovic
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC, 3010, Australia.
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Papot C, Massol F, Jollivet D, Tasiemski A. Antagonistic evolution of an antibiotic and its molecular chaperone: how to maintain a vital ectosymbiosis in a highly fluctuating habitat. Sci Rep 2017; 7:1454. [PMID: 28469247 PMCID: PMC5431198 DOI: 10.1038/s41598-017-01626-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 03/30/2017] [Indexed: 12/25/2022] Open
Abstract
Evolution of antimicrobial peptides (AMPs) has been shown to be driven by recurrent duplications and balancing/positive selection in response to new or altered bacterial pathogens. We use Alvinella pompejana, the most eurythermal animal known on Earth, to decipher the selection patterns acting on AMP in an ecological rather than controlled infection approach. The preproalvinellacin multigenic family presents the uniqueness to encode a molecular chaperone (BRICHOS) together with an AMP (alvinellacin) that controls the vital ectosymbiosis of Alvinella. In stark contrast to what is observed in the context of the Red queen paradigm, we demonstrate that exhibiting a vital and highly conserved ecto-symbiosis in the face of thermal fluctuations has led to a peculiar selective trend promoting the adaptive diversification of the molecular chaperone of the AMP, but not of the AMP itself. Because BRICHOS stabilizes beta-stranded peptides, this polymorphism likely represents an eurythermal adaptation to stabilize the structure of alvinellacin, thus hinting at its efficiency to select and control the epibiosis across the range of temperatures experienced by the worm; Our results fill some knowledge gaps concerning the function of BRICHOS in invertebrates and offer perspectives for studying immune genes in an evolutionary ecological framework.
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Affiliation(s)
- Claire Papot
- University Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, SPICI group, F-59000, Lille, France
| | - François Massol
- University Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, SPICI group, F-59000, Lille, France
| | - Didier Jollivet
- AD2M, ABICE team, Université Pierre et Marie Curie-CNRS, UMR7144, Station Biologique de Roscoff, 29682, Roscoff, France
| | - Aurélie Tasiemski
- University Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, SPICI group, F-59000, Lille, France.
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Synergistic activity of synthetic N-terminal peptide of human lactoferrin in combination with various antibiotics against carbapenem-resistant Klebsiella pneumoniae strains. Eur J Clin Microbiol Infect Dis 2017; 36:1739-1748. [PMID: 28470337 DOI: 10.1007/s10096-017-2987-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 04/10/2017] [Indexed: 01/10/2023]
Abstract
The spread of multi-drug resistant (MDR) Klebsiella pneumoniae strains producing carbapenemases points to a pressing need for new antibacterial agents. To this end, the in-vitro antibacterial activity of a synthetic N-terminal peptide of human lactoferrin, further referred to as hLF1-11, was evaluated against K. pneumoniae strains harboring different carbapenemase genes (i.e. OXA-48, KPC-2, KPC-3, VIM-1), with different susceptibility to colistin and other antibiotics, alone or in combination with conventional antibiotics (gentamicin, tigecycline, rifampicin, clindamycin, and clarithromycin). An antimicrobial peptide susceptibility assay was used to assess the bactericidal activity of hLF1-11 against the different K. pneumoniae strains tested. The synergistic activity was evaluated by a checkerboard titration method, and the fractional inhibitory concentration (FIC) index was calculated for the various combinations. hLF1-11 was more efficient in killing a K. pneumoniae strain susceptible to most antimicrobials (including colistin) than a colistin-susceptible strain and a colistin-resistant MDR K. pneumoniae strain. In addition, hLF1-11 exhibited a synergistic effect with the tested antibiotics against MDR K. pneumoniae strains. The results of this study indicate that resistance to hLF1-11 and colistin are not strictly associated, and suggest an hLF1-11-induced sensitizing effect of K. pneumoniae to antibiotics, especially to hydrophobic antibiotics, which are normally not effective on Gram-negative bacteria. Altogether, these data indicate that hLF1-11 in combination with antibiotics is a promising candidate to treat infections caused by MDR-K. pneumoniae strains.
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Analysis of Synergistic Effects of Antimicrobial Peptide Arenicin-1 and Conventional Antibiotics. Bull Exp Biol Med 2017; 162:765-768. [PMID: 28429214 DOI: 10.1007/s10517-017-3708-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 10/19/2022]
Abstract
We studied combined effects of antimicrobial peptide arenicin-1 from lugworm Arenicola marina and some conventional antibiotics. A number of drug combinations with pronounced synergistic effects were revealed. The influence of antibacterial activity assessment conditions was determined and the methodology excluding false-positive test results was developed.
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