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Barman S, Kurnaz LB, Leighton R, Hossain MW, Decho AW, Tang C. Intrinsic antimicrobial resistance: Molecular biomaterials to combat microbial biofilms and bacterial persisters. Biomaterials 2024; 311:122690. [PMID: 38976935 PMCID: PMC11298303 DOI: 10.1016/j.biomaterials.2024.122690] [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: 12/03/2023] [Revised: 05/13/2024] [Accepted: 06/26/2024] [Indexed: 07/10/2024]
Abstract
The escalating rise in antimicrobial resistance (AMR) coupled with a declining arsenal of new antibiotics is imposing serious threats to global public health. A pervasive aspect of many acquired AMR infections is that the pathogenic microorganisms exist as biofilms, which are equipped with superior survival strategies. In addition, persistent and recalcitrant infections are seeded with bacterial persister cells at infection sites. Together, conventional antibiotic therapeutics often fail in the complete treatment of infections associated with bacterial persisters and biofilms. Novel therapeutics have been attempted to tackle AMR, biofilms, and persister-associated complex infections. This review focuses on the progress in designing molecular biomaterials and therapeutics to address acquired and intrinsic AMR, and the fundamental microbiology behind biofilms and persisters. Starting with a brief introduction of AMR basics and approaches to tackling acquired AMR, the emphasis is placed on various biomaterial approaches to combating intrinsic AMR, including (1) semi-synthetic antibiotics; (2) macromolecular or polymeric biomaterials mimicking antimicrobial peptides; (3) adjuvant effects in synergy; (4) nano-therapeutics; (5) nitric oxide-releasing antimicrobials; (6) antimicrobial hydrogels; (7) antimicrobial coatings. Particularly, the structure-activity relationship is elucidated in each category of these biomaterials. Finally, illuminating perspectives are provided for the future design of molecular biomaterials to bypass AMR and cure chronic multi-drug resistant (MDR) infections.
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Affiliation(s)
- Swagatam Barman
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States; Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Leman Buzoglu Kurnaz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Ryan Leighton
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Md Waliullah Hossain
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Alan W Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States.
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States.
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2
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Zheng Y, Chi J, Ou J, Jiang L, Wang L, Luo R, Yan Y, Xu Z, Peng T, Cai J, Wu C, Teng P, Quan G, Lu C. Antibacterial Agents and Adjuvants against Pseudomonas Aeruginosa Infections. Adv Healthc Mater 2024:e2400664. [PMID: 39039988 DOI: 10.1002/adhm.202400664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 06/21/2024] [Indexed: 07/24/2024]
Abstract
The development of narrow-spectrum antimicrobial agents is paramount for swiftly eradicating pathogenic bacteria, mitigating the onset of drug resistance, and preserving the homeostasis of bacterial microbiota in tissues. Owing to the limited affinity between the hydrophobic lipid bilayer interior of bacterial cells and most hydrophilic, polar peptides, the construction of a distinctive class of four-armed host-defense peptides/peptidomimetics (HDPs) is proposed with enhanced specificity and membrane perturbation capability against Pseudomonas aeruginosa by incorporating imidazole groups. These groups demonstrate substantial affinity for unsaturated phospholipids, which are predominantly expressed in the cell membrane of P. aeruginosa, thereby enabling HDPs to exhibit narrow-spectrum activity against this bacterium. Computational simulations and experimental investigations have corroborated that the imidazole-rich, four-armed peptidomimetics exhibit notable selectivity toward bacteria over mammalian cells. Among them, 4H10, characterized by its abundant and densely distributed imidazole groups, exhibits impressive activity against various clinically isolated P. aeruginosa strains. Moreover, 4H10 has demonstrated potential as an antibiotic adjuvant, enhancing doxycycline accumulation and exerting effects on intracellular targets by efficiently disrupting bacterial cell membranes. Consequently, the hydrogel composed of 4H10 and doxycycline emerged as a promising topical agent, significantly diminishing the skin P. aeruginosa burden by 97.1% within 2 days while inducing minimal local and systemic toxicity.
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Affiliation(s)
- Yuwei Zheng
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Jiaying Chi
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Jiayu Ou
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Ling Jiang
- Department of Pharmacy, Shantou University Medical College, Shantou, 515041, China
| | - Liqing Wang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Rui Luo
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Yilang Yan
- Department of Pharmacy, Shantou University Medical College, Shantou, 515041, China
| | - Zejun Xu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Tingting Peng
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Chuanbin Wu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Peng Teng
- National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Guilan Quan
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Chao Lu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 511436, China
- College of Pharmacy, Jinan University, Guangzhou, 511436, China
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3
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Shao Z, Xu YD, Luo H, Hakobyan K, Zhang M, Xu J, Stenzel MH, Wong EHH. Smart Galactosidase-Responsive Antimicrobial Dendron: Towards More Biocompatible Membrane-Disruptive Agents. Macromol Rapid Commun 2024:e2400350. [PMID: 38895813 DOI: 10.1002/marc.202400350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/07/2024] [Indexed: 06/21/2024]
Abstract
Antimicrobial resistance is a global healthcare challenge that urgently needs the development of new therapeutic agents. Antimicrobial peptides and mimics thereof are promising candidates but mostly suffer from inherent toxicity issues due to the non-selective binding of cationic groups with mammalian cells. To overcome this toxicity issue, this work herein reports the synthesis of a smart antimicrobial dendron with masked cationic groups (Gal-Dendron) that could be uncaged in the presence of β-galactosidase enzyme to form the activated Enz-Dendron and confer antimicrobial activity. Enz-Dendron show bacteriostatic activity toward Gram-negative (P. aeruginosa and E. coli) and Gram-positive (S. aureus) bacteria with minimum inhibitory concentration values of 96 µm and exerted its antimicrobial mechanism via a membrane disruption pathway, as indicated by inner and outer membrane permeabilization assays. Crucially, toxicity studies confirmed that the masked prodrug Gal-Dendron exhibited low hemolysis and is at least 2.4 times less toxic than the uncaged cationic Enz-Dendron, thus demonstrating the advantage of masking the cationic groups with responsive immolative linkers to overcome toxicity and selectivity issues. Overall, this study highlights the potential of designing new membrane-disruptive antimicrobial agents that are more biocompatible via the amine uncaging strategy.
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Affiliation(s)
- Zeyu Shao
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - You Dan Xu
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Hao Luo
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Karen Hakobyan
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Mengnan Zhang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Jiangtao Xu
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Martina H Stenzel
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Edgar H H Wong
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
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Su X, Liu W, Yang B, Yang S, Hou J, Yu G, Feng Y, Li J. Constructing network structures to enhance stability and target deposition of selenium nanoparticles via amphiphilic sodium alginate and alkyl glycosides. Int J Biol Macromol 2024; 267:131588. [PMID: 38615860 DOI: 10.1016/j.ijbiomac.2024.131588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/24/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Dietary selenium (Se) supplementation has recently received increasing attention; however, Selenium nanoparticles (SeNPs) exhibit poor stability and tend to aggregate in aqueous solution. Therefore, enhancing the stability of SeNPs and their effective delivery to plants remain challenging. In this study, sodium alginate (SA) and lysozyme (LZ) were reacted via the wet-heat Maillard reaction (MR) to obtain amphiphilic alginate-based polymers (SA-LZ). Alkyl glycosides (APG) were introduced into SA-LZ to enhance the deposition of SeNPs in leaves. Thus, a renewable and degradable polysaccharide-based material (SA-LZ/APG) loaded with Se formed an amphiphilic alginate-based-based shell with a Se core. Notably, the encapsulation of SeNPs into a polysaccharide base (SA-LZ/APG) increased the stabilization of SeNPs and resulted in orange-red, zero-valent, monoclinic and spherical SeNPs with a mean diameter of approximately 43.0 nm. In addition, SA-LZ/APG-SeNPs reduced the interfacial tension of plant leaves and increased the Se content of plants compared to the blank group. In vitro studies have reported that SA-LZ/APG-SeNPs and SA-LZ-SeNPs have significantly better clearance of DDPH and ABTS than that of APG-SeNPs. Thus, we believe that SA-LZ/APG is a promising smart delivery system that can synergistically enhance the stability of SeNPs in aqueous solutions and improve the bioavailability of Se nutrient solutions.
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Affiliation(s)
- Xiaona Su
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China
| | - Wenyan Liu
- School of Food Science and Engineering, Hainan University, Hainan, Haikou 570228, China
| | - Bei Yang
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China
| | - Shujuan Yang
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China
| | - Jinjian Hou
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China
| | - Gaobo Yu
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China.
| | - Yuhong Feng
- School of Materials Science and Engineering, Hainan University, Hainan, Haikou 570228, China.
| | - Jiacheng Li
- School of Chemistry and Chemical Engineering, Hainan University, Hainan, Haikou 570228, China.
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Kurnaz LB, Barman S, Yang X, Fisher C, Outten FW, Nagarkatti P, Nagarkatti M, Tang C. Facial amphiphilic naphthoic acid-derived antimicrobial polymers against multi-drug resistant gram-negative bacteria and biofilms. Biomaterials 2023; 301:122275. [PMID: 37619264 PMCID: PMC10530118 DOI: 10.1016/j.biomaterials.2023.122275] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/19/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023]
Abstract
Inspired by the facial amphiphilic nature and antimicrobial efficacy of many antimicrobial peptides, this work reported facial amphiphilic bicyclic naphthoic acid derivatives with different ratios of charges to rings that were installed onto side chains of poly(glycidyl methacrylate). Six quaternary ammonium-charged (QAC) polymers were prepared to investigate the structure-activity relationship. These QAC polymers displayed potent antibacterial activity against various multi-drug resistant (MDR) gram-negative pathogens such as Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, and Acinetobacter baumannii. Polymers demonstrated low hemolysis and high antimicrobial selectivity. Additionally, they were able to eradicate established biofilms and kill metabolically inactive dormant cells. The membrane permeabilization and depolarization results indicated a mechanism of action through membrane disruption. Two lead polymers showed no resistance from MDR-P. aeruginosa and MDR-K. pneumoniae. These facial amphiphiles are potentially a new class of potent antimicrobial agents to tackle the antimicrobial resistance for both planktonic and biofilm-related infections.
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Affiliation(s)
- Leman Buzoglu Kurnaz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Swagatam Barman
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Xiaoming Yang
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Claire Fisher
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - F Wayne Outten
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States.
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Barman S, Buzoglu Kurnaz L, Yang X, Nagarkatti M, Nagarkatti P, Decho AW, Tang C. Facially Amphiphilic Bile Acid-Functionalized Antimicrobials: Combating Pathogenic Bacteria, Fungi, and Their Biofilms. ACS Infect Dis 2023; 9:1769-1782. [PMID: 37535907 PMCID: PMC10529379 DOI: 10.1021/acsinfecdis.3c00266] [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] [Indexed: 08/05/2023]
Abstract
We report facially amphiphilic bile acid-based antimicrobials with a broad spectrum of activity against both bacterial and fungal pathogens and negligible detrimental effects on mammalian cells. Two lead compounds eliminated dormant subpopulations of various bacterial species, unlike conventional antibiotics. The lead compounds were also effective in eradicating biofilms of methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, and Candida albicans. Additionally, these compounds substantially inhibited the formation of fungal biofilms (C. albicans). Mechanistic investigations revealed the membrane-active nature and endogenous reactive oxygen species (ROS) induction ability of these compounds. Finally, no detectable resistance was developed by the bacterial strains against this class of membrane-targeting antimicrobials.
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Affiliation(s)
- Swagatam Barman
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
- Department of Environmental Health Sciences, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Leman Buzoglu Kurnaz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Xiaoming Yang
- Department of Pathology, Microbiology and Immunology, University of South Carolina, Columbia, South Carolina 29209, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, Columbia, South Carolina 29209, United States
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, Columbia, South Carolina 29209, United States
| | - Alan W Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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Shao H, Zhou J, Lin X, Zhou Y, Xue Y, Hong W, Lin X, Jia X, Fan Y. Bio-inspired peptide-conjugated liposomes for enhanced planktonic bacteria killing and biofilm eradication. Biomaterials 2023; 300:122183. [PMID: 37302278 DOI: 10.1016/j.biomaterials.2023.122183] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 05/15/2023] [Accepted: 05/29/2023] [Indexed: 06/13/2023]
Abstract
Developing new antimicrobial agents has become an urgent task to address the increasing prevalence of multidrug-resistant pathogens and the emergence of biofilms. Cationic antimicrobial peptides (AMPs) have been regarded as promising candidates due to their unique non-specific membrane rupture mechanism. However, a series of problems with the peptides hindered their practical application due to their high toxicity and low bioactivity and stability. Here, inspired by broadening the application of cell-penetrating peptides (CPPs), we selected five different sequences of cationic peptides which are considered as both CPPs and AMPs, and developed a biomimetic strategy to construct cationic peptide-conjugated liposomes with the virus-like structure for both enhancements of antibacterial efficacy and biosafety. The correlation between available peptide density/peptide variety and antimicrobial capabilities was evaluated from quantitative perspectives. Computational simulation and experimental investigations assisted to identify the optimal peptide-conjugated liposomes and revealed that the designed system provides high charge density for enhanced anionic bacterial membrane binding capability without compromised cytotoxicity, being capable of enhanced antibacterial efficacy of bacteria/biofilm of clinically important pathogens. The bio-inspired design has shown enhanced therapeutic efficiency of peptides and may promote the development of next-generation antimicrobials.
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Affiliation(s)
- Hui Shao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Jin Zhou
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China.
| | - Xiaoqian Lin
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Yue Zhou
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Yumeng Xue
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Weili Hong
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Xubo Lin
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China
| | - Xiaoling Jia
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China.
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, And with the School of Engineering Medicine, Beihang University, Beijing, 100083, China.
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Haktaniyan M, Sharma R, Bradley M. Size-Controlled Ammonium-Based Homopolymers as Broad-Spectrum Antibacterials. Antibiotics (Basel) 2023; 12:1320. [PMID: 37627740 PMCID: PMC10452032 DOI: 10.3390/antibiotics12081320] [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: 07/31/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
Ammonium group containing polymers possess inherent antimicrobial properties, effectively eliminating or preventing infections caused by harmful microorganisms. Here, homopolymers based on monomers containing ammonium groups were synthesized via Reversible Addition Fragmentation Chain Transfer Polymerization (RAFT) and evaluated as potential antibacterial agents. The antimicrobial activity was evaluated against Gram-positive (M. luteus and B. subtilis) and Gram-negative bacteria (E. coli and S. typhimurium). Three polymers, poly(diallyl dimethyl ammonium chloride), poly([2-(methacryloyloxy)ethyl]trimethylammonium chloride), and poly(vinyl benzyl trimethylammonium chloride), were examined to explore the effect of molecular weight (10 kDa, 20 kDa, and 40 kDa) on their antimicrobial activity and toxicity to mammalian cells. The mechanisms of action of the polymers were investigated with dye-based assays, while Scanning Electron Microscopy (SEM) showed collapsed and fused bacterial morphologies due to the interactions between the polymers and components of the bacterial cell envelope, with some polymers proving to be bactericidal and others bacteriostatic, while being non-hemolytic. Among all the homopolymers, the most active, non-Gram-specific polymer was poly([2-(methacryloyloxy)ethyl]trimethylammonium chloride), with a molecular weight of 40 kDa, with minimum inhibitory concentrations between 16 and 64 µg/mL, showing a bactericidal mode of action mediated by disruption of the cytoplasmic membrane. This homopolymer could be useful in biomedical applications such as surface dressings and in areas such as eye infections.
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Affiliation(s)
- Meltem Haktaniyan
- EaStCHEM, School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3FJ, UK; (M.H.); (R.S.)
| | - Richa Sharma
- EaStCHEM, School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3FJ, UK; (M.H.); (R.S.)
| | - Mark Bradley
- EaStCHEM, School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3FJ, UK; (M.H.); (R.S.)
- Precision Healthcare University Research Institute, Queen Mary University of London, Whitechapel, Empire House, London E1 1HH, UK
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Lin C, Ma Z, Gao Y, Le M, Shi Z, Qi D, Ma JC, Cui ZK, Wang L, Jia YG. Main-Chain Cationic Bile Acid Polymers Mimicking Facially Amphiphilic Antimicrobial Peptides. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37400427 DOI: 10.1021/acsami.3c06424] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Antibiotic-resistant bacterial infections have led to an increased demand for antibacterial agents that do not contribute to antimicrobial resistance. Antimicrobial peptides (AMPs) with the facially amphiphilic structures have demonstrated remarkable effectiveness, including the ability to suppress antibiotic resistance during bacterial treatment. Herein, inspired by the facially amphiphilic structure of AMPs, the facially amphiphilic skeletons of bile acids (BAs) are utilized as building blocks to create a main-chain cationic bile acid polymer (MCBAP) with macromolecular facial amphiphilicity via polycondensation and a subsequent quaternization. The optimal MCBAP displays an effective activity against Gram-positive methicillin-resistant Staphylococcus aureus (MRSA) and Gram-negative Escherichia coli, fast killing efficacy, superior bactericidal stability in vitro, and potent anti-infectious performance in vivo using the MRSA-infected wound model. MCBAP shows the low possibility to develop drug-resistant bacteria after repeated exposure, which may ascribe to the macromolecular facial amphiphilicity promoting bacterial membrane disruption and the generation of reactive oxygen species. The easy synthesis and low cost of MCBAP, the superior antimicrobial performance, and the therapeutic potential in treating MRSA infection altogether demonstrate that BAs are a promising group of building blocks to mimic the facially amphiphilic structure of AMPs in treating MRSA infection and alleviating antibiotic resistance.
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Affiliation(s)
- Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Zunwei Ma
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Yunpeng Gao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Mengqi Le
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Zhifeng Shi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Dawei Qi
- MediCity Research Laboratory, University of Turku, Turku 20520, Finland
| | - Jian-Chao Ma
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhong-Kai Cui
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Lin Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Biomedical Engineering of Guangdong Province; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education; Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Biomedical Engineering of Guangdong Province; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education; Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
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10
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Bi F, Zhang J, Xie R, Yu D, Wei H, Wang Y, Hua Z, Qi X, Huang B, Yang G. Adenosine Triphosphate-Responsive Glyconanorods through Self-Assembly of β-Cyclodextrin-Based Glycoconjugates for Targeted and Effective Bacterial Sensing and Killing. Biomacromolecules 2023; 24:1003-1013. [PMID: 36651863 DOI: 10.1021/acs.biomac.2c01440] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Polymer-based nanomaterials have exhibited promising alternative avenues to combat the globe challenge of multidrug-resistant bacterial infection. However, most of the reported polymeric nanomaterials have facially linear amphiphilic structures with positive net charges, which may lead to nonspecific binding, high hemolysis, and uncontrollable self-organization, limiting their practical applications. In this contribution, we report a one-dimensional glyconanorod (GNR) through self-assembly of well-defined β-cyclodextrin-based glycoconjugates (RMan) featuring hydrophobic carbon-based chains and amide rhodamines with an adenosine triphosphate (ATP)-recognition site and targeted and hydrophilic mannoses and positively net-charged ethylene amine groups. The GNRs show superior targeting sensing and killing for Gram-negative Escherichia coli (E. coli) dominantly through the multivalent recognition between mannoses on the nanorod and the lectin on the surface of E. coli. Moreover, red fluorescence was light on due to the hydrogen bonding between amide rhodamine and ATP. Benefiting from the designs, the GNRs are capable of possessing a higher therapeutic index and of encapsulating other antibiotics. They exhibit an enhanced effect against E. coli strains. Intriguingly, the GNRs displayed a more reduced hemolysis effect and lower cytotoxicity compared to that of ethylene glyco-modified nanorods. These results reveal that the glyconanomaterials not only feature superior and targeted bacterial sensing and antibacterial activity, but also better biocompatibility compared with the widely used PEG-covered nanomaterials. Furthermore, the in vivo studies demonstrate that the targeted and ATP-responsive GNRs complexed with antibiotics showed better treatment using a mouse model of abdominal sepsis following intraperitoneal E. coli infection. The present work describes a targeted and effective sensing and antibacterial platform based on glycoconjugates that have potential applications for the treatment of infections caused by pathogenic microorganisms.
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Affiliation(s)
- Feihu Bi
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Jin Zhang
- Department of Nephropathy, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, China
| | - Rui Xie
- Department of Plant Pathology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Deshui Yu
- Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Hanchen Wei
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yulong Wang
- Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Zan Hua
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xiangming Qi
- Department of Nephropathy, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, China
| | - Bo Huang
- Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Guang Yang
- Biomass Molecular Engineering Center and Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China.,Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, Anhui 230036, China
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11
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Buzoglu Kurnaz L, Luo Y, Yang X, Alabresm A, Leighton R, Kumar R, Hwang J, Decho AW, Nagarkatti P, Nagarkatti M, Tang C. Facial amphiphilicity index correlating chemical structures with antimicrobial efficacy. Bioact Mater 2023; 20:519-527. [PMID: 35846842 PMCID: PMC9253162 DOI: 10.1016/j.bioactmat.2022.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/20/2022] Open
Abstract
Facial amphiphilicity is an extraordinary chemical structure feature of a variety of antimicrobial peptides and polymers. Vast efforts have been dedicated to small molecular, macromolecular and dendrimer-like systems to mimic this highly preferred structure or conformation, including local facial amphiphilicity and global amphiphilicity. This work conceptualizes Facial Amphiphilicity Index (FAI) as a numerical value to quantitatively characterize the measure of chemical compositions and structural features in dictating antimicrobial efficacy. FAI is a ratio of numbers of charges to rings, representing both compositions of hydrophilicity and hydrophobicity. Cationic derivatives of multicyclic compounds were evaluated as model systems for testing antimicrobial selectivity against Gram-negative and Gram-positive bacteria. Both monocyclic and bicyclic compounds are non-antimicrobial regardless of FAIs. Antimicrobial efficacy was observed with systems having larger cross-sectional areas including tricyclic abietic acid and tetracyclic bile acid. While low and high FAIs respectively lead to higher and lower antimicrobial efficacy, in consideration of cytotoxicity, the sweet spot is typically suited with intermediate FAIs for each specific system. This can be well explained by the synergistic hydrophobic-hydrophobic and electrostatic interactions with bacterial cell membranes and the difference between bacterial and mammalian cell membranes. The adoption of FAI would pave a new avenue toward the design of next-generation antimicrobial macromolecules and peptides. Established a numerical index to quantify the effect of facial amphiphilicity on antimicrobial efficacy. Evaluated the facial amphiphilicity index of multicyclic compounds possessing various rings and cationic charges. Provided this index a new tool toward more quantitative designs of AMP mimics.
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Affiliation(s)
- Leman Buzoglu Kurnaz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Yuanyuan Luo
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Xiaoming Yang
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Amjed Alabresm
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Ryan Leighton
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Rani Kumar
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - JiHyeon Hwang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Alan W. Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
- Corresponding author.
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12
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Zhang L, Fan Y, Galantini L, Schillén K, Del Giudice A, Du G, Wang Y. Noncovalent Bile Acid Oligomers as Facial Amphiphilic Antimicrobials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:495-506. [PMID: 36529944 DOI: 10.1021/acs.langmuir.2c02787] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
New antimicrobial agents are needed to address the ever-growing risk of bacterial resistance, particularly for methicillin- and vancomycin-resistant Staphylococcus aureus (S. aureus). Here, we report a class of bile acid oligomers as facial amphiphilic antimicrobials, which are noncovalently fabricated by cholic acid (CA) and deoxycholic acid (DCA) with polyamines (e.g., diamines, diethylenetriamine, spermidine, and spermine). The antibacterial activities of these bile acid oligomers (CA/polyamines and DCA/polyamines) against S. aureus become stronger with increasing the amine group numbers of polyamines without obviously enhanced cytotoxicity and skin irritation. DCA/spermine, entirely composed of natural products, exhibits the best antibacterial activity but the lowest cytotoxicity and the weakest skin irritation. All CA/polyamines and DCA/polyamines form well-ordered ribbon-like aggregates, collecting numerous facial amphiphilic structures to significantly enhance the interactions with bacterial membranes. In particular, the biogenic polyamines with more than two amine groups provide extra positively charged sites, hence facilitating the binding of bile acid oligomers to the negatively charged outer membrane of the bacteria via electrostatic interaction. This in turn promotes more oligomeric bile acid units that can be inserted into the membrane through hydrophobic interaction between bile acids and lipid domains. The noncovalently constructed and separable amphiphilic antimicrobials can avoid the long-term coexistence of microorganisms and antibacterial molecules in different acting modes. Therefore, the noncovalent bile acid oligomers, especially those with higher oligomerization degrees, can be a potential approach to effectively enhance antibacterial activity, improve environmental friendliness, and reduce bacterial drug resistance.
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Affiliation(s)
- Liangchen Zhang
- Chinese Academy of Sciences Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yaxun Fan
- Chinese Academy of Sciences Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Luciano Galantini
- Department of Chemistry, Sapienza University of Rome, P.O. Box 34-Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Alessandra Del Giudice
- Department of Chemistry, Sapienza University of Rome, P.O. Box 34-Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Guanqun Du
- Division of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Yilin Wang
- Chinese Academy of Sciences Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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13
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Le M, Huang W, Ma Z, Shi Z, Li Q, Lin C, Wang L, Jia YG. Facially Amphiphilic Skeleton-Derived Antibacterial Cationic Dendrimers. Biomacromolecules 2023; 24:269-282. [PMID: 36495302 DOI: 10.1021/acs.biomac.2c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It is urgent to develop biocompatible and high-efficiency antimicrobial agents since microbial infections have always posed serious challenges to human health. Herein, through the marriage of facially amphiphilic skeletons and cationic dendrimers, high-density positively charged dendrimers D-CA6-N+ (G2) and D-CA2-N+ (G1) were designed and synthesized using the "branch" of facially amphiphilic bile acids, followed by their modification with quaternary ammonium charges. Both dendrimers could self-assemble into nanostructured micelles in aqueous solution. D-CA6-N+ displays potent antibacterial activity against Staphylococcus aureus and Escherichia coli, with minimum inhibitory concentrations (MICs) as low as 7.50 and 7.79 μM, respectively, and has an evidently stronger antibacterial activity than D-CA2-N+. Moreover, D-CA6-N+ can kill S. aureus faster than E. coli. The facial amphiphilicity of the bile acid skeleton facilitates the selective destruction of bacterial membranes and endows dendrimers with negligible hemolysis and cytotoxicity even under a high concentration of 16× MIC. In vivo studies show that D-CA6-N+ is much more effective and safer than penicillin G in treating S. aureus infection and promoting wound healing, which suggests facially amphiphilic skeleton-derived cationic dendrimers can be a promising approach to effectively enhance antibacterial activity and biocompatibility of antibacterial agent, simultaneously.
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Affiliation(s)
- Mengqi Le
- School of Biomedical Science and Engineering, South China University of Technology, Guangzhou510006, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Wen Huang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Zunwei Ma
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Zhifeng Shi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Qingtao Li
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Lin Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
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14
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Sun J, Ma X, Li R, Lin M, Shu L, Chen X. Antimicrobial Nanostructured Assemblies with Extremely Low Toxicity and Potent Activity to Eradicate Staphylococcus Aureus Biofilms. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204039. [PMID: 36412076 DOI: 10.1002/smll.202204039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Self-assembled cationic polymeric nanostructures have been receiving increasing attention for efficient antibacterial agents. In this work, a new type of antibacterial agents is developed by preparing pH-dependent nanostructured assemblies from cationic copolypeptoid poly(N-allylglycine)-b-poly(N-octylglycine) (PNAG-b-PNOG) modified with cysteamine hydrochloride ((PNAG-g-NH2 )-b-PNOG) driven by crystallization and hydrophobicity of the PNOG blocks. Due to the presence of confined domains arising from crystalline PNOG, persistent spheres and fiber-like assemblies are obtained from the same polymer upon a heating-cooling cycle. This allows for direct comparison of antimicrobial efficiency of nanostructured assemblies with various morphologies that are otherwise similar. Both nanostructured assemblies exhibit extremely low toxicity to human red blood cells, irrespective of the presence of the hydrophobic block. Enhanced antimicrobial performance of the fiber-like micelles compared to the spheres, which result in high selectivity of the fibers, is shown. Notably, the fiber-like micelles show great efficacy in inhibition of the Staphylococcus aureus (S. aureus) biofilm formations and eradication of the mature biofilms, superior to vancomycin. The micelles also show potent in vivo antimicrobial efficacy in a S. aureus infection mouse skin model. With a systematic study, it is demonstrated that both micelles kill the bacteria through a membrane disruption mechanism. These results imply great potential of polypeptoid assemblies as promising excellent candidates for antibacterial treatment and open up new possibilities for the preparation of a new generation of nanostructured antimicrobials.
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Affiliation(s)
- Jing Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xutao Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Rongye Li
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Min Lin
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Lilei Shu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xuesi Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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15
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Fan D, Liu X, Ren Y, Bai S, Li Y, Luo Z, Dong J, Chen F, Zeng W. Functional insights to the development of bioactive material for combating bacterial infections. Front Bioeng Biotechnol 2023; 11:1186637. [PMID: 37152653 PMCID: PMC10160456 DOI: 10.3389/fbioe.2023.1186637] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/13/2023] [Indexed: 05/09/2023] Open
Abstract
The emergence of antibiotic-resistant "superbugs" poses a serious threat to human health. Nanomaterials and cationic polymers have shown unprecedented advantages as effective antimicrobial therapies due to their flexibility and ability to interact with biological macromolecules. They can incorporate a variety of antimicrobial substances, achieving multifunctional effects without easily developing drug resistance. Herein, this article discusses recent advances in cationic polymers and nano-antibacterial materials, including material options, fabrication techniques, structural characteristics, and activity performance, with a focus on their fundamental active elements.
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Affiliation(s)
- Duoyang Fan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Xiaohui Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Yueming Ren
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Shuaige Bai
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Yanbing Li
- Xiangya Hospital, Central South University, Changsha, China
| | - Ziheng Luo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Jie Dong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
| | - Fei Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
- *Correspondence: Fei Chen, ; Wenbin Zeng,
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha, China
- *Correspondence: Fei Chen, ; Wenbin Zeng,
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16
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Abstract
Pathogenic microorganisms are considered to a major threat to human health, impinging on multiple sectors including hospitals, dentistry, food storage and packaging, and water contamination. Due to the increasing levels of antimicrobial resistance shown by pathogens, often caused by long-term abuse or overuse of traditional antimicrobial drugs, new approaches and solutions are necessary. In this area, antimicrobial polymers are a viable solution to combat a variety of pathogens in a number of contexts. Indeed, polymers with intrinsic antimicrobial activities have long been an intriguing research area, in part, due to their widespread natural abundance in materials such as chitin, chitosan, carrageen, pectin, and the fact that they can be tethered to surfaces without losing their antimicrobial activities. In addition, since the discovery of the strong antimicrobial activity of some synthetic polymers, much work has focused on revealing the most effective structural elements that give rise to optimal antimicrobial properties. This has often been synthesis targeted, with the generation of either new polymers or the modification of natural antimicrobial polymers with the addition of antimicrobial enhancing modalities such as quaternary ammonium or guanidinium groups. In this review, the growing number of polymers showing intrinsic antimicrobial properties from the past decade are highlighted in terms of synthesis; often based on post-synthesis modification and their utilization. This includes as surface coatings, for example on medical devices, such as intravascular catheters, orthopaedic implants and contact lenses, or directly as antibacterial agents (specifically as eye drops). Surface functionalisation with inherently antimicrobial polymers is highlighted and has been achieved via various techniques, including surface-bound initiators allowing RAFT or ATRP surface-based polymerization, or via physical immobilization such as by layer-by-layer techniques. This article also covers the mechanistic modes of action of intrinsic antimicrobial polymers against bacteria, viruses, or fungi.
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Affiliation(s)
- Meltem Haktaniyan
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK.
| | - Mark Bradley
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK.
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17
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Radiation synthesis and in vitro evaluation of the antimicrobial property of functionalized nanopolymer-based poly (propargyl alcohol) against multidrug-resistance microbes. Microb Pathog 2022; 172:105777. [PMID: 36152795 DOI: 10.1016/j.micpath.2022.105777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 11/21/2022]
Abstract
Pathogenic microorganisms are responsible for many diseases in biological organisms, including humans. Many of these infections thrive in hospitals, where people are treated with medicines and certain bacteria resist those treatments. Consequently, this research article aims to develop efficient antimicrobial material-based conjugated and functionalized polypropargyl alcohol nanoparticles (nano-PGA) synthesized by gamma irradiation. The monomer of PGA was polymerized in various mediums (water (W), chloroform (Ch), and dimethylformamide (DMF)) without catalysts under the action of γ-rays, producing π-conjugated and colored functional nano-PGA polymers. Nano-PGA is a versatile polymer demonstrated here as suitable for creating next-generation of antimicrobial systems capable of effectively preventing and killing various pathogenic microorganisms. The novelty here is the development of polymeric nanostructures by changing the solvent and irradiation doses. The antimicrobial property of nano-PGA (nanostare-like antibody structure) was examined against different pathogenic bacteria and unicellular fungi. Nano-PGA-DMF exhibits significant antimicrobial potential against Staphylococcus aureus (S. aureus) (20.20 mm; zone of inhibition (ZOI), and 0.47 μg/mL; minimum inhibitory concentration (MIC), followed by Escherichia coli (E. coli) (14.50 mm; ZOI, and 1.87 μg/mL; MIC, and Candida albicans (C.albicans) (12.50 mm; ZOI, and 1.87 μg/mL; MIC). In antibiofilm results, the highest inhibition percentage of the synthesized nano-PGA-W, nano-PGA-Ch, and nano-PGA-DMF was documented for S. aureus (17.01%, 37.57%, and 80.27%), followed by E. coli (25.68%, 55.16% and 78.11%), and C.albicans (40.10%, 62.65%, and 76.19%), respectively. The amount of bacterial protein removed is directly proportional after increasing the concentration of nano-PGA-W, nano-PGA-Ch, and nano-PGA-DMF samples (at different concentrations) and counted to be 70.58, 102.89, and 200.87 μg/mL, respectively following the treatment with 1.0 mg/mL of each sample. It was found that the nano-PGA polymer prepared in DMF has better antimicrobial activity than one prepared in chloroform than in water.
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18
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Valenti GE, Alfei S, Caviglia D, Domenicotti C, Marengo B. Antimicrobial Peptides and Cationic Nanoparticles: A Broad-Spectrum Weapon to Fight Multi-Drug Resistance Not Only in Bacteria. Int J Mol Sci 2022; 23:ijms23116108. [PMID: 35682787 PMCID: PMC9181033 DOI: 10.3390/ijms23116108] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
In the last few years, antibiotic resistance and, analogously, anticancer drug resistance have increased considerably, becoming one of the main public health problems. For this reason, it is crucial to find therapeutic strategies able to counteract the onset of multi-drug resistance (MDR). In this review, a critical overview of the innovative tools available today to fight MDR is reported. In this direction, the use of membrane-disruptive peptides/peptidomimetics (MDPs), such as antimicrobial peptides (AMPs), has received particular attention, due to their high selectivity and to their limited side effects. Moreover, similarities between bacteria and cancer cells are herein reported and the hypothesis of the possible use of AMPs also in anticancer therapies is discussed. However, it is important to take into account the limitations that could negatively impact clinical application and, in particular, the need for an efficient delivery system. In this regard, the use of nanoparticles (NPs) is proposed as a potential strategy to improve therapy; moreover, among polymeric NPs, cationic ones are emerging as promising tools able to fight the onset of MDR both in bacteria and in cancer cells.
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Affiliation(s)
- Giulia E. Valenti
- Department of Experimental Medicine (DIMES), General Pathology Section, University of Genoa, 16132 Genoa, Italy; (G.E.V.); (B.M.)
| | - Silvana Alfei
- Department of Pharmacy, University of Genoa, 16148 Genoa, Italy;
| | - Debora Caviglia
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy;
| | - Cinzia Domenicotti
- Department of Experimental Medicine (DIMES), General Pathology Section, University of Genoa, 16132 Genoa, Italy; (G.E.V.); (B.M.)
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), 56122 Pisa, Italy
- Correspondence: ; Tel.: +39-010-353-8830
| | - Barbara Marengo
- Department of Experimental Medicine (DIMES), General Pathology Section, University of Genoa, 16132 Genoa, Italy; (G.E.V.); (B.M.)
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), 56122 Pisa, Italy
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19
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Wang L, Zheng W, Li S, Zhong L, Jiang X. Aminophenol-Decorated Gold Nanoparticles for Curing Bacterial Infections. NANO LETTERS 2022; 22:3576-3582. [PMID: 35486905 DOI: 10.1021/acs.nanolett.1c04968] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanomaterials usually kill bacteria via multiple mechanisms which are not explicit to the same degree as those of conventional antibiotics. This situation may hinder the development of novel nanoscale antibiotics. Here, we present aminophenol (AP) to modify gold nanoparticles (AP_Au NPs) which show a broad antibacterial spectrum and potent antibacterial effects against multidrug-resistant (MDR) bacteria with clear antibacterial mechanisms. AP_Au NPs can not only damage bacterial cell walls but also bind to the 16S rRNA to block bacterial protein synthesis. Moreover, AP_Au NPs show excellent performance in curing abdominal bacterial infections in an in vivo model. AP_Au NPs thus have the potential to become a novel antibacterial agent for clinical applications.
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Affiliation(s)
- Le Wang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Rd, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Wenfu Zheng
- GBA Research Innovation Institute for Nanotechnology, CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, Beijing 100190, China
| | - Sixiang Li
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Rd, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Leni Zhong
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Rd, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Rd, Nanshan District, Shenzhen, Guangdong 518055, China
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20
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Kopiasz RJ, Kulbacka N, Drężek K, Podgórski R, Łojszczyk I, Mierzejewska J, Ciach T, Augustynowicz-Kopeć E, Głogowska A, Iwańska A, Tomaszewski W, Jańczewski D. Influence of PEG Subunit on the Biological Activity of Ionenes: Synthesis of Novel Polycations, Antimicrobial and Toxicity Studies. Macromol Biosci 2022; 22:e2200094. [PMID: 35524947 DOI: 10.1002/mabi.202200094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/20/2022] [Indexed: 11/11/2022]
Abstract
An alarming increase of antibiotic resistance among pathogens creates an urgent need to develop new antimicrobial agents. Many reported polycations show high antimicrobial activity along with low hemolytic activity. Unfortunately, most of those molecules remain highly cytotoxic against various mammalian cells. In this work, we present a systematic study on the impact of triethylene glycol monomethyl ether side groups (short PEG analog) on antimicrobial, hemolytic, and cytotoxic properties of novel amphiphilic ionenes. A detailed description of synthesis, leading to well-defined alternating polymers, which differ in structural elements responsible for hydrophilicity (PEG) and hydrophobicity (alkyl chain), is presented. Obtained results show that the PEG moiety and fine-tuned hydrophilic-lipophilic balance of ionenes synergistically lead to low-cytotoxic, low-hemolytic molecules with high activity against S. aureus, including methicillin-resistant strains (MRSA). Additionally, the results of mechanistic studies on bacterial cells and fluorescently labeled liposomes are also discussed. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Rafał J Kopiasz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
| | - Natalia Kulbacka
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
| | - Karolina Drężek
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
| | - Rafał Podgórski
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, Warsaw, 00-645, Poland
| | - Ilona Łojszczyk
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, Warsaw, 00-645, Poland
| | - Jolanta Mierzejewska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, Warsaw, 00-645, Poland
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, Warsaw, 01-138, Poland
| | - Agnieszka Głogowska
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, Warsaw, 01-138, Poland
| | - Agnieszka Iwańska
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, Warsaw, 01-138, Poland
| | - Waldemar Tomaszewski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
| | - Dominik Jańczewski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland
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21
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Leong J, Shi D, Tan JPK, Yang C, Yang S, Wang Y, Ngow YS, Kng J, Balakrishnan N, Peng SQ, Yeow CS, Periaswamy B, Venkataraman S, Kwa AL, Liu X, Yao H, Yang YY. Potent Antiviral and Antimicrobial Polymers as Safe and Effective Disinfectants for the Prevention of Infections. Adv Healthc Mater 2022; 11:e2101898. [PMID: 34694749 DOI: 10.1002/adhm.202101898] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/19/2021] [Indexed: 11/06/2022]
Abstract
Disinfection using effective antimicrobials is essential in preventing the spread of infectious diseases. This COVID-19 pandemic has brought the need for effective disinfectants to greater attention due to the fast transmission of SARS-CoV-2. Current active ingredients in disinfectants are small molecules that microorganisms can develop resistance against after repeated long-term use and may penetrate the skin, causing harmful side-effects. To this end, a series of membrane-disrupting polyionenes that contain quaternary ammoniums and varying hydrophobic components is synthesized. They are effective against bacteria and fungi. They are also fast acting against clinically isolated drug resistant strains of bacteria. Formulating them with thickeners and nonionic surfactants do not affect their killing efficiency. These polyionenes are also effective in preventing infections caused by nonenveloped and enveloped viruses. Their effectiveness against mouse coronavirus (i.e., mouse hepatitis virus-MHV) depends on their hydrophobicity. The polyionenes with optimal compositions inactivates MHV completely in 30 s. More importantly, the polyionenes are effective in inhibiting SARS-CoV-2 by >99.999% within 30 s. While they are effective against the microorganisms, they do not cause damage to the skin and have a high oral lethal dose. Overall, these polyionenes are promising active ingredients for disinfection and prevention of viral and microbial infections.
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Affiliation(s)
- Jiayu Leong
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Danrong Shi
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital Zhejiang University School of Medicine 79 Qingchun Road Hangzhou 310003 China
| | - Jeremy Pang Kern Tan
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Chuan Yang
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Shengcai Yang
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Yanming Wang
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Yeen Shian Ngow
- Department of Pharmacy Singapore General Hospital Outram Road Singapore 169608 Singapore
| | - Jessica Kng
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Nithiyaa Balakrishnan
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Shu Qin Peng
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Chun Siang Yeow
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Balamurugan Periaswamy
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Shrinivas Venkataraman
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Andrea Lay‐Hoon Kwa
- Department of Pharmacy Singapore General Hospital Outram Road Singapore 169608 Singapore
| | - Xiaoli Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital Zhejiang University School of Medicine 79 Qingchun Road Hangzhou 310003 China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital Zhejiang University School of Medicine 79 Qingchun Road Hangzhou 310003 China
| | - Yi Yan Yang
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore
- Department of Orthopaedic Surgery Yong Loo Lin School of Medicine National University of Singapore Singapore 119288 Singapore
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22
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Membrane-active amino acid-coupled polyetheramine derivatives with high selectivity and broad-spectrum antibacterial activity. Acta Biomater 2022; 142:136-148. [PMID: 35158080 DOI: 10.1016/j.actbio.2022.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 11/21/2022]
Abstract
Membrane active antimicrobial peptide mimics have been considered as promising alternatives to antibiotics, which interact with bacterial cell membranes to combat bacteria and avoid the emergence of multidrug-resistant bacteria. Herein, a series of star-shaped and membrane-active cationic polyetheramides derived from amino acids, were synthesized via condensation of amino acids and polyetheamine (T403). The antibacterial and anti-biofilm activitives as well as the biocompatibility of these amino acids derived polyetheramides (AAPEAs) were investigated in detail. The star-shaped AAPEAs showed high-efficient and broad-spectrum antibacterial activity against the Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species (ESKAPE) pathogens. In addition, the antibacterial activity was significantly affected by the type of amino acid. L-Trp-T403, which was obtained from L-tryptophan and polyetheramine, exhibited the best antibacterial activity with the minimum inhibitory concentration (MIC) of 1 µg/mL against methicillin-resistant S. aureus (MRSA). Time-kill kinetics and multi-passage resistance tests experiments indicated that L-Trp-T403 could rapidly kill bacteria within 1 h. This compound also showed potent antibacterial activity against bacteria over many passages. Moreover, the AAPEAs exhibited outstanding stability and long-term antibacterial activity in complex mammalian body fluids, as well as good biocompatibility, low hemolytic activity, slight toxicity for mammalian cell (L929) and low in vivo toxicity. The antibacterial activity of L-Trp-T403 was found to be based on the disruption of bacterial membranes, which leads to the leakage of the internal cytoplasm. The AAPEAs possessed high antibacterial and anti-biofilm activity, thus, they are promising to be used as long-term and biofilm-disrupting antimicrobial agents. STATEMENT OF SIGNIFICANCE: The growing epidemic of MDR-bacteria is becoming a severe public health threat. Here, a series of amino acids derived polyetheramides (AAPEAs) with a star-shaped polyether amide scaffold was synthesized. The star-shaped AAPEAs displayed broad-spectrum antibacterial activity against Gram-positive, Gram-negative bacteria and drug-resistant bacteria MRSA. Notably, the star-shaped AAPEAs were stable under plasma conditions and showed outstanding stability and long-term antibacterial activity in various complex mammalian fluids. Moreover, these star-shaped AAPEAs not only inhibited the formation of biofilms but also disrupted the established biofilms. Furthermore, the membrane-active AAPEAs eradicated bacteria via the fast membrane lytic mechanism, thus plausibly overcoming the MDR effect. These results demonstrate that membrane-active AAPEAs can serve as emerging long-term and biofilm-disrupting antimicrobial agents to treat biofilm-related infections.
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23
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Lin M, Sun J. Antimicrobial peptide–inspired antibacterial polymeric materials for biosafety. BIOSAFETY AND HEALTH 2022. [DOI: 10.1016/j.bsheal.2022.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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24
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Jung K, Corrigan N, Wong EHH, Boyer C. Bioactive Synthetic Polymers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105063. [PMID: 34611948 DOI: 10.1002/adma.202105063] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/13/2021] [Indexed: 05/21/2023]
Abstract
Synthetic polymers are omnipresent in society as textiles and packaging materials, in construction and medicine, among many other important applications. Alternatively, natural polymers play a crucial role in sustaining life and allowing organisms to adapt to their environments by performing key biological functions such as molecular recognition and transmission of genetic information. In general, the synthetic and natural polymer worlds are completely separated due to the inability for synthetic polymers to perform specific biological functions; in some cases, synthetic polymers cause uncontrolled and unwanted biological responses. However, owing to the advancement of synthetic polymerization techniques in recent years, new synthetic polymers have emerged that provide specific biological functions such as targeted molecular recognition of peptides, or present antiviral, anticancer, and antimicrobial activities. In this review, the emergence of this generation of bioactive synthetic polymers and their bioapplications are summarized. Finally, the future opportunities in this area are discussed.
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Affiliation(s)
- Kenward Jung
- Cluster for Advanced Macromolecular Design (CAMD), Australian Centre for Nanomedicine (ACN), and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW, 2052, Australia
| | - Nathaniel Corrigan
- Cluster for Advanced Macromolecular Design (CAMD), Australian Centre for Nanomedicine (ACN), and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW, 2052, Australia
| | - Edgar H H Wong
- Cluster for Advanced Macromolecular Design (CAMD), Australian Centre for Nanomedicine (ACN), and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW, 2052, Australia
| | - Cyrille Boyer
- Cluster for Advanced Macromolecular Design (CAMD), Australian Centre for Nanomedicine (ACN), and School of Chemical Engineering, University of New South Wales (UNSW) Sydney, Sydney, NSW, 2052, Australia
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25
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Sahoo S, Ghosh P, Khan MEH, De P. Recent Progress in Macromolecular Design and Synthesis of Bile Acid‐Based Polymeric Architectures. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Subhasish Sahoo
- Polymer Research Centre and Centre for Advanced Functional Materials Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia West Bengal Mohanpur, 741246 India
| | - Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia West Bengal Mohanpur, 741246 India
| | - Md Ezaz Hasan Khan
- School of General Education College of the North Atlantic ‐ Qatar Arab League Street Doha 24449 Qatar
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia West Bengal Mohanpur, 741246 India
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26
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Preparation of Antimicrobial Coatings from Cross-Linked Copolymers Containing Quaternary Dodecyl-Ammonium Compounds. Int J Mol Sci 2021; 22:ijms222413236. [PMID: 34948032 PMCID: PMC8707885 DOI: 10.3390/ijms222413236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022] Open
Abstract
One of the concerns today’s societies face is the development of resistant pathogenic microorganisms. The need to tackle this problem has driven the development of innovative antimicrobial materials capable of killing or inhibiting the growth of microorganisms. The present study investigates the dependence of the antimicrobial activity and solubility properties on the hydrophilicity/hydrophobicity ratio of antimicrobial coatings based on quaternary ammonium compounds. In this line, suitable hydrophilic and hydrophobic structural units were selected for synthesizing the antimicrobial copolymers poly(4-vinylbenzyl dimethyldodecylammonium chloride-co-acrylic acid), P(VBCDDA-co-AA20) and poly(dodecyltrimethylammonium 4-styrene sulfonate-co-glycidyl methacrylate), P(SSAmC12-co-GMA20), bearing an alkyl chain of 12 carbons either through covalent bonding or through electrostatic interaction. The cross-linking reaction of the carboxylic group of acrylic acid (AA) with the epoxide group of glycidyl methacrylate (GMA) of these two series of reactive antimicrobial copolymers was explored in blends, obtained through solution casting after curing at various temperatures. The release of the final products in pure water and NaCl 1 M solutions (as analyzed by gravimetry and total organic carbon, TOC/total nitrogen, TN analyses), could be controlled by the coating composition. The cross-linked polymeric membranes of composition 60/40 w/w % ratios led to 97.8 and 99.7% mortality for Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), respectively, whereas the coating 20/80 w/w % resulted in 96.6 and 99.8% cell reduction. Despite the decrease in hydrophobicity (from a 16- to a 12-carbon alkyl chain), the new materials maintained the killing efficacy, while at the same time resulting in increased release to the aqueous solution.
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27
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Yang S, Chang Y, Hazoor S, Brautigam C, Foss FW, Pan Z, Dong H. Modular Design of Supramolecular Ionic Peptides with Cell-Selective Membrane Activity. Chembiochem 2021; 22:3164-3168. [PMID: 34506664 PMCID: PMC11261884 DOI: 10.1002/cbic.202100323] [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: 07/02/2021] [Revised: 09/09/2021] [Indexed: 11/10/2022]
Abstract
The rational design of materials with cell-selective membrane activity is an effective strategy for the development of targeted molecular imaging and therapy. Here we report a new class of cationic multidomain peptides (MDPs) that can undergo enzyme-mediated molecular transformation followed by supramolecular assembly to form nanofibers in which cationic clusters are presented on a rigid β-sheet backbone. This structural transformation, which is induced by cells overexpressing the specific enzymes, led to a shift in the membrane perturbation potential of the MDPs, and consequently enhanced cell uptake and drug delivery efficacy. We envision the directed self-assembly based on modularly designed MDPs as a highly promising approach to generate dynamic supramolecular nanomaterials with emerging membrane activity for a range of disease targeted molecular imaging and therapy applications.
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Affiliation(s)
- Su Yang
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - Yan Chang
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - Shan Hazoor
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - Chad Brautigam
- Department of Biophysics, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390, USA
| | - Frank W Foss
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - Zui Pan
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - He Dong
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA
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28
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Shi Y, Feng X, Lin L, Wang J, Chi J, Wu B, Zhou G, Yu F, Xu Q, Liu D, Quan G, Lu C, Pan X, Cai J, Wu C. Virus-inspired surface-nanoengineered antimicrobial liposome: A potential system to simultaneously achieve high activity and selectivity. Bioact Mater 2021; 6:3207-3217. [PMID: 33723524 PMCID: PMC7947718 DOI: 10.1016/j.bioactmat.2021.02.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/11/2021] [Accepted: 02/28/2021] [Indexed: 01/06/2023] Open
Abstract
Enveloped viruses such as SARS-CoV-2 frequently have a highly infectious nature and are considered effective natural delivery systems exhibiting high efficiency and specificity. Since simultaneously enhancing the activity and selectivity of lipopeptides is a seemingly unsolvable problem for conventional chemistry and pharmaceutical approaches, we present a biomimetic strategy to construct lipopeptide-based mimics of viral architectures and infections to enhance their antimicrobial efficacy while avoiding side effects. Herein, a surface-nanoengineered antimicrobial liposome (SNAL) is developed with the morphological features of enveloped viruses, including a moderate size range, lipid-based membrane structure, and highly lipopeptide-enriched bilayer surface. The SNAL possesses virus-like infection to bacterial cells, which can mediate high-efficiency and high-selectivity bacteria binding, rapidly attack and invade bacteria via plasma membrane fusion pathway, and induce a local "burst" release of lipopeptide to produce irreversible damage of cell membrane. Remarkably, viral mimics are effective against multiple pathogens with low minimum inhibitory concentrations (1.6-6.3 μg mL-1), high bactericidal efficiency of >99% within 2 h, >10-fold enhanced selectivity over free lipopeptide, 99.8% reduction in skin MRSA load after a single treatment, and negligible toxicity. This bioinspired design has significant potential to enhance the therapeutic efficacy of lipopeptides and may create new opportunities for designing next-generation antimicrobials.
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Affiliation(s)
- Yin Shi
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 511443, China
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Xiaoqian Feng
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Liming Lin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Jing Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 511443, China
| | - Biyuan Wu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Guilin Zhou
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Feiyuan Yu
- Medical College, Shantou University, Shantou, Guangdong, 15041, China
| | - Qian Xu
- Medical College, Shantou University, Shantou, Guangdong, 15041, China
| | - Daojun Liu
- Medical College, Shantou University, Shantou, Guangdong, 15041, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 511443, China
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, United States
| | - Xin Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong, 510006, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, United States
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong, 511443, China
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29
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Lin L, Chi J, Yan Y, Luo R, Feng X, Zheng Y, Xian D, Li X, Quan G, Liu D, Wu C, Lu C, Pan X. Membrane-disruptive peptides/peptidomimetics-based therapeutics: Promising systems to combat bacteria and cancer in the drug-resistant era. Acta Pharm Sin B 2021; 11:2609-2644. [PMID: 34589385 PMCID: PMC8463292 DOI: 10.1016/j.apsb.2021.07.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 02/05/2023] Open
Abstract
Membrane-disruptive peptides/peptidomimetics (MDPs) are antimicrobials or anticarcinogens that present a general killing mechanism through the physical disruption of cell membranes, in contrast to conventional chemotherapeutic drugs, which act on precise targets such as DNA or specific enzymes. Owing to their rapid action, broad-spectrum activity, and mechanisms of action that potentially hinder the development of resistance, MDPs have been increasingly considered as future therapeutics in the drug-resistant era. Recently, growing experimental evidence has demonstrated that MDPs can also be utilized as adjuvants to enhance the therapeutic effects of other agents. In this review, we evaluate the literature around the broad-spectrum antimicrobial properties and anticancer activity of MDPs, and summarize the current development and mechanisms of MDPs alone or in combination with other agents. Notably, this review highlights recent advances in the design of various MDP-based drug delivery systems that can improve the therapeutic effect of MDPs, minimize side effects, and promote the co-delivery of multiple chemotherapeutics, for more efficient antimicrobial and anticancer therapy.
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Affiliation(s)
- Liming Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yilang Yan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Rui Luo
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xiaoqian Feng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yuwei Zheng
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Dongyi Xian
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Li
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Daojun Liu
- Shantou University Medical College, Shantou 515041, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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30
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Sun H, Wang Y, Song J. Polymer Vesicles for Antimicrobial Applications. Polymers (Basel) 2021; 13:2903. [PMID: 34502943 PMCID: PMC8434374 DOI: 10.3390/polym13172903] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 02/07/2023] Open
Abstract
Polymer vesicles, hollow nanostructures with hydrophilic cavity and hydrophobic membrane, have shown significant potentials in biomedical applications including drug delivery, gene therapy, cancer theranostics, and so forth, due to their unique cell membrane-like structure. Incorporation with antibacterial active components like antimicrobial peptides, etc., polymer vesicles exhibited enhanced antimicrobial activity, extended circulation time, and reduced cell toxicity. Furthermore, antibacterial, and anticancer can be achieved simultaneously, opening a new avenue of the antimicrobial applications of polymer vesicles. This review seeks to highlight the state-of-the-art of antimicrobial polymer vesicles, including the design strategies and potential applications in the field of antibacterial. The structural features of polymer vesicles, preparation methods, and the combination principles with antimicrobial active components, as well as the advantages of antimicrobial polymer vesicles, will be discussed. Then, the diverse applications of antimicrobial polymer vesicles such as wide spectrum antibacterial, anti-biofilm, wound healing, and tissue engineering associated with their structure features are presented. Finally, future perspectives of polymer vesicles in the field of antibacterial is also proposed.
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Affiliation(s)
- Hui Sun
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yin Wang
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China;
| | - Jiahui Song
- Center of Scientific Technology, Ningxia Medical University, Yinchuan 750004, China;
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31
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Wang Y, Malkmes MJ, Jiang C, Wang P, Zhu L, Zhang H, Zhang Y, Huang H, Jiang L. Antibacterial mechanism and transcriptome analysis of ultra-small gold nanoclusters as an alternative of harmful antibiotics against Gram-negative bacteria. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126236. [PMID: 34492988 DOI: 10.1016/j.jhazmat.2021.126236] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 06/13/2023]
Abstract
In this work, a well-known Au25 NCs with high purity was prepared by simple one-pot reducing method. The as-synthesized Au25 NCs exhibited excellent antibacterial efficiency toward Gram-negative bacteria in a dose- and time-dependent manner, which could be used as nanoantibiotics to replace harmful antibiotics. The antibacterial assays showed that almost 100% bacteria were killed at lower concentration (100-150 μM) within a short time (30-60 min), providing a rapid and effective killing outcome for Gram-negative bacteria. After that, antibacterial mechanism was mainly investigated at cellular level via destruction of membrane integrity, disruption of antioxidant defense system, metabolic inactivation, DNA damage, as well as at molecular level via transcriptome analysis (RNA sequencing) for the first time. RNA sequencing results showed that differentially expressed genes (DEGs) related to biosynthesis of cell wall and membrane, glycolysis and TCA cycle, oxidative phosphorylation and DNA replication and repair were significantly affected. It was concluded that synergetic effect of membrane damage, oxidative stress, DNA damage and energy metabolism eventually led to the Gram-negative bacteria growth inhibition and death.
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Affiliation(s)
- Yuxian Wang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Matthew Jay Malkmes
- College of Food Science and Light Industry, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Cheng Jiang
- College of Food Science and Light Industry, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Peng Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Liying Zhu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Hongman Zhang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yangheng Zhang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China.
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210046, China; College of Pharmaceutical Science, Nanjing Tech University, Nanjing 211816, China.
| | - Ling Jiang
- College of Food Science and Light Industry, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
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Dey R, Mukherjee S, Barman S, Haldar J. Macromolecular Nanotherapeutics and Antibiotic Adjuvants to Tackle Bacterial and Fungal Infections. Macromol Biosci 2021; 21:e2100182. [PMID: 34351064 DOI: 10.1002/mabi.202100182] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/13/2021] [Indexed: 12/19/2022]
Abstract
The escalating rise in the population of multidrug-resistant (MDR) pathogens coupled with their biofilm forming ability has struck the global health as nightmare. Alongwith the threat of aforementioned menace, the sluggish development of new antibiotics and the continuous deterioration of the antibiotic pipeline has stimulated the scientific community toward the search of smart and innovative alternatives. In near future, membrane targeting antimicrobial polymers, inspired from antimicrobial peptides, can stand out significantly to combat against the MDR superbugs. Many of these amphiphilic polymers can form nanoaggregates through self-assembly with superior and selective antimicrobial efficacy. Additionally, these macromolecular nanoaggregrates can be utilized to engineer smart antibiotic-delivery system for on-demand drug-release, exploiting the infection site's micoenvironment. This strategy substantially increases the local concentration of antibiotics and reduces the associated off-target toxicity. Furthermore, amphiphilc macromolecules can be utilized to rejuvinate obsolete antibiotics to tackle the drug-resistant infections. This review article highlights the recent developments in macromolecular architecture to design numerous nanostructures with broad-spectrum antimicrobial activity, their application in fabricating smart drug delivery systems and their efficacy as antibiotic adjuvants to circumvent antimicrobial resistance. Finally, the current challenges and future prospects are briefly discussed for further exploration and their practical application in clinical settings.
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Affiliation(s)
- Rajib Dey
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Sudip Mukherjee
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Swagatam Barman
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India.,Antimicrobial Research Laboratory, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, Karnataka, 560064, India
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Wang M, Feng X, Gao R, Sang P, Pan X, Wei L, Lu C, Wu C, Cai J. Modular Design of Membrane-Active Antibiotics: From Macromolecular Antimicrobials to Small Scorpionlike Peptidomimetics. J Med Chem 2021; 64:9894-9905. [PMID: 33789422 PMCID: PMC8886609 DOI: 10.1021/acs.jmedchem.1c00312] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Infections caused by multidrug-resistant bacteria have emerged in recent decades, leading to escalating interest in host defense peptides (HDPs) to reverse this dangerous trend. Inspired by the modular design in bioengineering, herein we report a new class of small amphiphilic scorpionlike peptidomimetics based on this strategy. These HDP mimics show potent antimicrobial activity against both Gram-positive and Gram-negative bacteria without drug resistance but with a high therapeutic index. The membrane-compromising action mode was suggested to be their potential bactericidal mechanism. Pharmacodynamic experiments were conducted using a murine abscess model of methicillin-resistant Staphylococcus aureus (MRSA) infections. The lead compound 12 showed impressive in vivo therapeutic efficacy with ∼99.998% (4.7log) reduction in skin MRSA burden, a significantly higher bactericidal efficiency than ciprofloxacin, and good biocompatibility. These results highlight the potential of these HDP mimics as novel antibiotic therapeutics.
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Affiliation(s)
- Minghui Wang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaoqian Feng
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
- Department of Pharmaceutics, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xin Pan
- Department of Pharmaceutics, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China
| | - Lulu Wei
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
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Babutan I, Lucaci AD, Botiz I. Antimicrobial Polymeric Structures Assembled on Surfaces. Polymers (Basel) 2021; 13:1552. [PMID: 34066135 PMCID: PMC8150949 DOI: 10.3390/polym13101552] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/08/2021] [Accepted: 05/09/2021] [Indexed: 12/16/2022] Open
Abstract
Pathogenic microbes are the main cause of various undesired infections in living organisms, including humans. Most of these infections are favored in hospital environments where humans are being treated with antibiotics and where some microbes succeed in developing resistance to such drugs. As a consequence, our society is currently researching for alternative, yet more efficient antimicrobial solutions. Certain natural and synthetic polymers are versatile materials that have already proved themselves to be highly suitable for the development of the next-generation of antimicrobial systems that can efficiently prevent and kill microbes in various environments. Here, we discuss the latest developments of polymeric structures, exhibiting (reinforced) antimicrobial attributes that can be assembled on surfaces and coatings either from synthetic polymers displaying antiadhesive and/or antimicrobial properties or from blends and nanocomposites based on such polymers.
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Affiliation(s)
- Iulia Babutan
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 42 Treboniu Laurian Str., 400271 Cluj-Napoca, Romania;
- Faculty of Physics, Babeș-Bolyai University, 1 M. Kogălniceanu Str., 400084 Cluj-Napoca, Romania
| | - Alexandra-Delia Lucaci
- George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gheorghe Marinescu Str., 540142 Târgu Mureș, Romania;
| | - Ioan Botiz
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 42 Treboniu Laurian Str., 400271 Cluj-Napoca, Romania;
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Lin C, Wang Y, Le M, Chen KF, Jia YG. Recent Progress in Bile Acid-Based Antimicrobials. Bioconjug Chem 2021; 32:395-410. [PMID: 33683873 DOI: 10.1021/acs.bioconjchem.0c00642] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the emergence of drug-resistant bacteria and the formation of biofilms by bacteria and fungi, microbial infections gradually threaten global health. Natural antimicrobial peptides (AMPs) have low susceptibility for developing resistance due to the membrane targeted mechanism, but instability and high manufacturing cost limit their applications in clinic. Bile acids, a group of steroids in the human body, with high stability, biocompatibility, and inherent facial amphiphilic structure similar to the characteristics of AMPs, have been applied to the biological field, such as drug delivery systems, self-healing hydrogels, antimicrobials, and so on. In this review, we mainly focus on the different classes of bile acid-based antimicrobials in recent years. Various designs and methods for the preparation of unimolecular antimicrobials with bile acid skeletons are first introduced, including coupling of primary amine, quaternary ammonium, and amino acid units with bile acid skeletons. Some representative oligomeric antimicrobials, including dimers of bile acids, are summarized. Finally, macromolecular antimicrobials bearing some positive charges at the main chain or side chain and interaction mechanisms of these bile acid-based antimicrobials are discussed.
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Affiliation(s)
- Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yushi Wang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Mengqi Le
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Kai-Feng Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
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36
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Guo Q, Guo H, Lan T, Chen Y, Chen X, Feng Y, Luo Y, Yao Y, Li Y, Pan X, Xu Y, Tao L, Liu Y, Shen X. Co-delivery of antibiotic and baicalein by using different polymeric nanoparticle cargos with enhanced synergistic antibacterial activity. Int J Pharm 2021; 599:120419. [PMID: 33647416 DOI: 10.1016/j.ijpharm.2021.120419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/12/2021] [Accepted: 02/20/2021] [Indexed: 12/14/2022]
Abstract
To evaluate the effect of polymer structures on their unique characteristics and antibacterial activity, this study focused on developing amphiphilic copolymers by using three different molecules through RAFT polymerization. Three amphiphilic copolymers, namely, PBMA-b-(PDMAEMA-r-PPEGMA) (BbDrE), (PBMA-r-PDMAEMA)-b-PPEGMA (BrDbE), and PBMA-r-PDMAEMA-r-PPEGMA (BrDrE), are successfully self-assembled into spherical or oval shaped nanoparticles in aqueous solution and remain stable in PBS, LB, and 10% FBS solutions for at least 3 days. The critical micelle concentrations are 0.012, 0.025, and 0.041 mg/mL for BbDrE, BrDbE, and BrDrE, respectively. The zeta potential values under pH 5.5 and pH 7.4 conditions are 3.18/0.19, 8.57/0.046, and 2.54/-0.69 mV for BbDrE, BrDbE, and BrDrE nanoparticles, respectively. The three copolymers with similar monomer compositions show similar molecular weight and thermostability. Baicalein (BA) and ciprofloxacin (CPX) are encapsulated into the three nanoparticles to obtain BbDrE@BA/CPX, BrDbE@BA/CPX, and BrDrE@BA/CPX nanocomposites, with LC values of 63.9/78.3, 63.9/74.7, and 55.3/64.8, respectively. The two drugs are released from the three drug-loaded nanocomposites with 60%-95% release in pH 5.5 over 24 h and 15%-30% release in pH 7.4. The drug-loaded nanocomposites show synergistic antibacterial activity than the naked drug (2-8 fold reduction for CPX) or single drug-loaded nanocomposites (4-8 fold reduction for CPX) against Pseudomonas aeruginosa and Staphylococcus aureus. The drug-loaded nanocomposites inhibit the formation of bacterial biofilms above their MIC values and eliminate bacterial biofilms observed by fluorescent microscope. Finally, the nanocomposites improve the healing of infection induced by P. aeruginosa and S. aureus on rat dermal wounds. These results indicate that antimicrobial agents with different structures could be an alternative treatment strategy for bacteria-induced infection.
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Affiliation(s)
- Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China.
| | - Honglei Guo
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou, China
| | - Yi Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xueyun Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Ya Feng
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yongjun Luo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yifang Yao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yafei Li
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xiuhao Pan
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yini Xu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Ling Tao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yujia Liu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China.
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di Gregorio MC, Cautela J, Galantini L. Physiology and Physical Chemistry of Bile Acids. Int J Mol Sci 2021; 22:1780. [PMID: 33579036 PMCID: PMC7916809 DOI: 10.3390/ijms22041780] [Citation(s) in RCA: 43] [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: 01/18/2021] [Accepted: 02/04/2021] [Indexed: 02/06/2023] Open
Abstract
Bile acids (BAs) are facial amphiphiles synthesized in the body of all vertebrates. They undergo the enterohepatic circulation: they are produced in the liver, stored in the gallbladder, released in the intestine, taken into the bloodstream and lastly re-absorbed in the liver. During this pathway, BAs are modified in their molecular structure by the action of enzymes and bacteria. Such transformations allow them to acquire the chemical-physical properties needed for fulling several activities including metabolic regulation, antimicrobial functions and solubilization of lipids in digestion. The versatility of BAs in the physiological functions has inspired their use in many bio-applications, making them important tools for active molecule delivery, metabolic disease treatments and emulsification processes in food and drug industries. Moreover, moving over the borders of the biological field, BAs have been largely investigated as building blocks for the construction of supramolecular aggregates having peculiar structural, mechanical, chemical and optical properties. The review starts with a biological analysis of the BAs functions before progressively switching to a general overview of BAs in pharmacology and medicine applications. Lastly the focus moves to the BAs use in material science.
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Affiliation(s)
- Maria Chiara di Gregorio
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Jacopo Cautela
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
| | - Luciano Galantini
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
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38
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Qian Y, Deng S, Lu Z, She Y, Xie J, Cong Z, Zhang W, Liu R. Using In Vivo Assessment on Host Defense Peptide Mimicking Polymer-Modified Surfaces for Combating Implant Infections. ACS APPLIED BIO MATERIALS 2020; 4:3811-3829. [DOI: 10.1021/acsabm.0c01066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yuxin Qian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shuai Deng
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ziyi Lu
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yunrui She
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiayang Xie
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zihao Cong
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenjing Zhang
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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Laroque S, Reifarth M, Sperling M, Kersting S, Klöpzig S, Budach P, Storsberg J, Hartlieb M. Impact of Multivalence and Self-Assembly in the Design of Polymeric Antimicrobial Peptide Mimics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:30052-30065. [PMID: 32517467 DOI: 10.1021/acsami.0c05944] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Antimicrobial resistance is an increasingly serious challenge for public health and could result in dramatic negative consequences for the health care sector during the next decades. To solve this problem, antibacterial materials that are unsusceptible toward the development of bacterial resistance are a promising branch of research. In this work, a new type of polymeric antimicrobial peptide mimic featuring a bottlebrush architecture is developed, using a combination of reversible addition-fragmentation chain transfer (RAFT) polymerization and ring-opening metathesis polymerization (ROMP). This approach enables multivalent presentation of antimicrobial subunits resulting in improved bioactivity and an increased hemocompatibility, boosting the selectivity of these materials for bacterial cells. Direct probing of membrane integrity of treated bacteria revealed highly potent membrane disruption caused by bottlebrush copolymers. Multivalent bottlebrush copolymers clearly outperformed their linear equivalents regarding bioactivity and selectivity. The effect of segmentation of cationic and hydrophobic subunits within bottle brushes was probed using heterograft copolymers. These materials were found to self-assemble under physiological conditions, which reduced their antibacterial activity, highlighting the importance of precise structural control for such applications. To the best of our knowledge, this is the first example to demonstrate the positive impact of multivalence, generated by a bottlebrush topology in polymeric antimicrobial peptide mimics, making these polymers a highly promising material platform for the design of new bactericidal systems.
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Affiliation(s)
- Sophie Laroque
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
- Department of Life Sciences & Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Martin Reifarth
- Department of Life Sciences & Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Marcel Sperling
- Department of Life Sciences & Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Sebastian Kersting
- Department of Molecular and Cellular Bioanalytics, Fraunhofer Institute for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses (Fraunhofer IZI-BB), Am Mühlenberg 13, 14476 Potsdam, Germany
| | - Stefanie Klöpzig
- Department of Healthcare, Biomaterials & Cosmeceuticals, Fraunhofer-Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Patrick Budach
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Joachim Storsberg
- Department of Healthcare, Biomaterials & Cosmeceuticals, Fraunhofer-Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Matthias Hartlieb
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
- Department of Life Sciences & Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam, Germany
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Cuervo-Rodríguez R, Muñoz-Bonilla A, López-Fabal F, Fernández-García M. Hemolytic and Antimicrobial Activities of a Series of Cationic Amphiphilic Copolymers Comprised of Same Centered Comonomers with Thiazole Moieties and Polyethylene Glycol Derivatives. Polymers (Basel) 2020; 12:E972. [PMID: 32331281 PMCID: PMC7240493 DOI: 10.3390/polym12040972] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/10/2020] [Accepted: 04/20/2020] [Indexed: 02/08/2023] Open
Abstract
A series of well-defined antimicrobial polymers composed of comonomers bearing thiazole ring (2-(((2-(4-methylthiazol-5-yl)ethoxy)carbonyl)oxy)ethyl methacrylate monomer (MTZ)) and non-hemotoxic poly(ethylene glycol) side chains (poly(ethylene glycol) methyl ether methacrylate (PEGMA)) were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. By post-polymerization functionalization strategy, polymers were quaternized with either butyl or octyl iodides to result in cationic amphiphilic copolymers incorporating thiazolium groups, thus with variable hydrophobic/hydrophilic balance associated to the length of the alkylating agent. Likewise, the molar percentage of PEGMA was modulated in the copolymers, also affecting the amphiphilicity. The antimicrobial activities of these cationic polymers were determined against Gram-positive and Gram-negative bacteria and fungi. Minimum inhibitory concentration (MIC) was found to be dependent on both length of the alkyl hydrophobic chain and the content of PEGMA in the copolymers. More hydrophobic octylated copolymers were found to be more effective against all tested microorganisms. The incorporation of non-ionic hydrophilic units, PEGMA, reduces the hydrophobicity of the system and the activity is markedly reduced. This effect is dramatic in the case of butylated copolymers, in which the hydrophobic/hydrophilic balance is highly affected. The hemolytic properties of polymers analyzed against human red blood cells were greatly affected by the hydrophobic/hydrophilic balance of the copolymers and the content of PEGMA, which drastically reduces the hemotoxicity. The copolymers containing longer hydrophobic chain, octyl, are much more hemotoxic than their corresponding butylated copolymers.
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Affiliation(s)
- R. Cuervo-Rodríguez
- Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, Ciudad Universitaria, 28040 Madrid, Spain;
| | - A. Muñoz-Bonilla
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
| | - F. López-Fabal
- Hospital Universitario de Móstoles C/ Luis Montes, s/n, 28935 Madrid, Spain;
| | - M. Fernández-García
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
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Wang J, Lu C, Shi Y, Feng X, Wu B, Zhou G, Quan G, Pan X, Cai J, Wu C. Structural Superiority of Guanidinium-Rich, Four-Armed Copolypeptides: Role of Multiple Peptide-Membrane Interactions in Enhancing Bacterial Membrane Perturbation and Permeability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18363-18374. [PMID: 32242658 DOI: 10.1021/acsami.0c02752] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of novel antimicrobials is a top priority to address the growing epidemic of multidrug-resistant pathogens. Since cationic nonamphiphilic star-shaped antimicrobials are promising molecular scaffolds that provide a high charge density in binding anionic bacterial bilayers, this research aimed to further increase their membrane perturbation capability by introducing guanidinium groups to the antimicrobials via enhancing membrane insertion. In particular, computational simulation and experimental investigations revealed that our designed guanidinium-rich alternating copolypeptide, four-armed poly(arginine-alt-glycine), can interact with both the headgroups and unsaturated tails of phospholipids in bacterial membranes through multiple interactions, including electrostatic, cation-π, and T-shaped π-π interactions, allowing it to penetrate deeper inside the biologically inaccessible high-energy barrier of the hydrophobic lipid bilayer interior to cause membrane permeabilization and precipitation of the bacterial cytoplasm. Furthermore, glycine was observed to have a unique effect in enhancing the performance of arginine-based copolypeptide. Four-armed poly(arginine-alt-glycine) exhibited broad-spectrum antimicrobial activity, high bactericidal efficiency, and negligible hemolysis. The in vivo antibacterial performance of the copolypeptide was superior to that of doxycycline in a mouse model of Pseudomonas aeruginosa skin infection, accompanied by negligible local and systemic toxicity. Our results demonstrate that this guanidinium-rich, nonamphiphilic, star-shaped structure may promote the development of next-generation antimicrobials.
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Affiliation(s)
- Jing Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Yin Shi
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaoqian Feng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Biyuan Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Guilin Zhou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
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