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Datta LP, Dutta D, Mukherjee R, Das TK, Biswas S. Polyoxometalate-Polymer Directed Macromolecular Architectonics of Silver Nanoparticles as Effective Antimicrobials. Chem Asian J 2024; 19:e202400344. [PMID: 38822687 DOI: 10.1002/asia.202400344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/27/2024] [Accepted: 05/31/2024] [Indexed: 06/03/2024]
Abstract
A novel inorganic-organic-inorganic ternary bioactive material formulated on antimicrobial peptide-based polymer has been reported. Supramolecular approach has been employed to incorporate molecularly crowded tyrosine-based polymer stabilized silver nanoparticles into membrane bound vesicles exploiting polyoxometalate-triggered surface templating strategy. Utilizing the covalent reversible addition fragmentation chain transfer (RAFT) polymerization and exploiting templated supramolecular architectonics at biopolymer interface, the bioactive ternary polymeric nanohybrids have been designed against Shigellosis leveraging the antibacterial activities of silver nanoparticle, cationic amphiphilic tyrosine polymer and inorganic polyoxometalate. The detail investigation against Shigella flexneri 2a cell line demonstrates that the collaborative mechanism of the ternary hybrid composite enhances the bactericidal activity in comparison to only polyoxometalate and polymer stabilized silver nanoparticle with an altered mechanism of action which is established via detailed biological analysis.
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Affiliation(s)
- Lakshmi Priya Datta
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
| | - Debanjan Dutta
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
| | - Riya Mukherjee
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
| | - Tapan Kumar Das
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
| | - Subharanjan Biswas
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
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2
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Wu T, Zhou M, Zou J, Chen Q, Qian F, Kurths J, Liu R, Tang Y. AI-guided few-shot inverse design of HDP-mimicking polymers against drug-resistant bacteria. Nat Commun 2024; 15:6288. [PMID: 39060236 PMCID: PMC11282099 DOI: 10.1038/s41467-024-50533-4] [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: 09/26/2023] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Host defense peptide (HDP)-mimicking polymers are promising therapeutic alternatives to antibiotics and have large-scale untapped potential. Artificial intelligence (AI) exhibits promising performance on large-scale chemical-content design, however, existing AI methods face difficulties on scarcity data in each family of HDP-mimicking polymers (<102), much smaller than public polymer datasets (>105), and multi-constraints on properties and structures when exploring high-dimensional polymer space. Herein, we develop a universal AI-guided few-shot inverse design framework by designing multi-modal representations to enrich polymer information for predictions and creating a graph grammar distillation for chemical space restriction to improve the efficiency of multi-constrained polymer generation with reinforcement learning. Exampled with HDP-mimicking β-amino acid polymers, we successfully simulate predictions of over 105 polymers and identify 83 optimal polymers. Furthermore, we synthesize an optimal polymer DM0.8iPen0.2 and find that this polymer exhibits broad-spectrum and potent antibacterial activity against multiple clinically isolated antibiotic-resistant pathogens, validating the effectiveness of AI-guided design strategy.
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Affiliation(s)
- Tianyu Wu
- Key Laboratory of Smart Manufacturing in Energy Chemical Process, East China University of Science and Technology, Shanghai, 200237, China
| | - Min Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jingcheng Zou
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Qi Chen
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Qian
- Key Laboratory of Smart Manufacturing in Energy Chemical Process, East China University of Science and Technology, Shanghai, 200237, China
| | - Jürgen Kurths
- Potsdam Institute for Climate Impact Research (PIK), Potsdam, 14473, Germany
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin, 10115, Germany
- The Research Institute of Intelligent Complex Systems, Fudan University, Shanghai, 200433, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yang Tang
- Key Laboratory of Smart Manufacturing in Energy Chemical Process, East China University of Science and Technology, Shanghai, 200237, China.
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Ding K, Cong W, Liu Y, Song C, Mi H, Liu C, Ma Y, Shen C. Antibacterial polyurethane foams with quaternized-chitosan as a chain extender for nasal packing and hemostasis. Acta Biomater 2024; 181:249-262. [PMID: 38704113 DOI: 10.1016/j.actbio.2024.04.041] [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: 12/21/2023] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/06/2024]
Abstract
Endoscopic surgery is an effective and common clinical practice for chronic sinusitis. Nasal packing materials are applied in nasal surgery to prevent hemorrhage and promote wound healing. In this study, a degradable polyurethane foam dressing is successfully developed as a promising nasal packing material with good biocompatibility and antibacterial capability. Specifically, quaternized chitosan (QCS) serves as the crosslinker instead of polyols to offer polyurethane foam (PUF-QCS) antibacterial capability. The PUF-QCS2.0 % (with 2.0 wt% QCS) exhibits satisfactory liquid absorption capacity (19.4 g/g), high compressive strengths at both wet (14.5 kPa) and dry states (7.7 kPa), and a good degradation rate (8.3 %) within 7 days. Meanwhile, PUF-QCS2.0 % retains long-term antibacterial activity for 7 days and kills 97.3 % of S. aureus and 91.8 % of E. coli within 6 hours in antibacterial testing. Furthermore, PUF-QCS2.0 % demonstrates a positive hemostatic response in the rabbit nasal septum mucosa trauma model by reducing hemostatic time over 50.0 % and decreasing blood loss up to 76.1 % compared to the commercial PVA nasal packing sponge. Importantly, PUF-QCS also exhibits a significant antibacterial activity in nasal cavity. This nasal packing material has advantages in post-surgery bleeding control and infection prevention. STATEMENT OF SIGNIFICANCE: The performance of a nasal packing sponge requires good mechanical properties, fast and high liquid absorption rate, effective degradability and strong antibacterial activity. These features are helpful for improving the postoperative recovery and patient healing. However, integrating these into a single polyurethane foam is a challenge. In this study, quaternized chitosan (QCS) is synthesized and used as a chain extender and antibacterial agent in preparing a degradable polyurethane foam (PUF-QCS) dressing. PUF-QCS undergoes partial degradation and exhibits effective broad-spectrum antibacterial activity in 7 days. The reduction of postoperative bleeding and infection observed in the animal experiment further demonstrates that the PUF-QCS developed here outperforms the existing commercial nasal packing materials.
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Affiliation(s)
- Kaidi Ding
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Wenlong Cong
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ying Liu
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Changtong Song
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haoyang Mi
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Chuntai Liu
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Yuhong Ma
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Changyu Shen
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
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4
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Yin CL, Qin RZ, Qin HL. One-Pot Three-Component Synthesis of Indolyl-4 H-chromene-3-sulfonyl Fluoride: A Class of Important Pharmacophore. J Org Chem 2024; 89:3618-3628. [PMID: 38358945 DOI: 10.1021/acs.joc.3c02706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
A one-pot, sequential three-component reaction between salicylaldehyde, indole, and 2-bromoprop-2-ene-1-sulfonyl fluoride (BPESF) has been demonstrated for the synthesis of sulfonyl fluoride substituted 4H-chromene derivatives in moderate to excellent yields (45%-94%). This one-pot sequential method features easily available starting materials, wide substrate scope, mild conditions, and great efficiency.
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Affiliation(s)
- Cheng-Lin Yin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Richard Zijian Qin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
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Tan J, Fang Y, Yang C, Tay J, Tan N, Krishnan NDB, Chua BL, Zhao Y, Chen Y, Hedrick JL, Yang YY. pH-Responsive Polymeric Micelle Dynamic Complexes for Selective Killing of Helicobacter pylori. Biomacromolecules 2023; 24:5551-5562. [PMID: 37828909 DOI: 10.1021/acs.biomac.2c01374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Helicobacter pylori, the world's most common chronic infection-causing pathogen, is responsible for causing gastric ulcers, the fourth-leading cause of cancer-related death globally in 2020. In recent years, the effectiveness of the current treatment regimen (two antibiotics and one proton pump inhibitor) has often been plagued with problems such as resistance and the undesired elimination of commensal bacteria. Herein, we report the synthesis of block and random copolycarbonates, functionalized with cationic guanidinium and anionic acetate functional groups, aimed at selectively killing H. pylori in the acidic environment of the stomach, while remaining nontoxic to the commensal bacteria in the gut. The compositions of the polymers were fine-tuned so that the polymers were readily dispersed in water without any difficulty at both pH 3.0 and 7.4. The self-assembly behavior of the polymers at different pH values by dynamic light scattering showed that the random and block copolymers formed stable micelles in a simulated gastric environment (pH 3.0) while aggregated at pH 7.4. Both polymers demonstrated stronger antibacterial activity against H. pylori than the guanidinium-functionalized homopolymer without any acetate functional group at pH 3.0. The block copolymer was significantly more bactericidal at pH 3.0 across the concentrations tested, as compared to the random copolymer, while it did not show significant toxicity toward rat red blood cells (rRBCs) and HK-2 cells or bactericidal effect toward E. coli (a common gut bacterium) and nor caused aggregation of rRBCs at its effective concentration and at physiological pH of 7.4. Additionally, both the block and random copolymers were much more stable against hydrolysis at pH 3.0 than at pH 7.4. This study provides insight into the influence of both polymer architecture and dynamic assembly on the bioactivities of antimicrobial polymers, where the disassembly of coacervates into narrowly dispersed micelles at pH 3 make them potent antimicrobials aided by the protonated carboxylic acid block.
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Affiliation(s)
- Jason Tan
- Singapore Institute of Food and Biotechnology Innovation, Agency for Science Technology and Research (A*STAR), 31 Biopolis Way, Nanos #02-01, Singapore 138669, Singapore
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Yunhui Fang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 31003, China
| | - Chuan Yang
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Singapore
| | - Joyce Tay
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Singapore
| | - Nathanael Tan
- Institute of Bioengineering and Bioimaging, Agency for Science Technology and Research (A*STAR), 31 Biopolis Way, Nanos #07-01, Singapore 138669, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Nithiyaa D/O Bala Krishnan
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Singapore
| | - Boon Lin Chua
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Singapore
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Yunbo Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 31003, China
| | - James L Hedrick
- IBM Almaden Research Center, San Jose, California 95120, United States
| | - Yi Yan Yang
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Singapore
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119288, Singapore
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6
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Hossain MI, Shams AB, Das Gupta S, Blanchard GJ, Mobasheri A, Hoque Apu E. The Potential Role of Ionic Liquid as a Multifunctional Dental Biomaterial. Biomedicines 2023; 11:3093. [PMID: 38002093 PMCID: PMC10669305 DOI: 10.3390/biomedicines11113093] [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: 09/06/2023] [Revised: 10/27/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
In craniofacial research and routine dental clinical procedures, multifunctional materials with antimicrobial properties are in constant demand. Ionic liquids (ILs) are one such multifunctional intelligent material. Over the last three decades, ILs have been explored for different biomedical applications due to their unique physical and chemical properties, high task specificity, and sustainability. Their stable physical and chemical characteristics and extremely low vapor pressure make them suitable for various applications. Their unique properties, such as density, viscosity, and hydrophilicity/hydrophobicity, may provide higher performance as a potential dental material. ILs have functionalities for optimizing dental implants, infiltrate materials, oral hygiene maintenance products, and restorative materials. They also serve as sensors for dental chairside usage to detect oral cancer, periodontal lesions, breath-based sobriety, and dental hard tissue defects. With further optimization, ILs might also make vital contributions to craniofacial regeneration, oral hygiene maintenance, oral disease prevention, and antimicrobial materials. This review explores the different advantages and properties of ILs as possible dental material.
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Affiliation(s)
- Md Iqbal Hossain
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA; (M.I.H.); (G.J.B.)
| | - Abdullah Bin Shams
- The Edward S. Rogers Sr. Department of Electrical Computer Engineering, University of Toronto, Toronto, ON M5S 3G4, Canada;
| | - Shuvashis Das Gupta
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
| | - Gary J. Blanchard
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA; (M.I.H.); (G.J.B.)
| | - Ali Mobasheri
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
- Division of Public Health, Epidemiology and Health Economics, WHO Collaborating Center for Public Health Aspects of Musculo-Skeletal Health and Ageing, University of Liège, 4000 Liège, Belgium
- State Research Institute Centre for Innovative Medicine, 08410 Vilnius, Lithuania
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Ehsanul Hoque Apu
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland; (S.D.G.); (A.M.)
- Department of Biomedical Sciences, College of Dental Medicine, Lincoln Memorial University, Knoxville, TN 37923, USA
- Institute for Quantitative Health Science and Engineering, Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
- Division of Hematology and Oncology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Centre for International Public Health and Environmental Research, Bangladesh (CIPHER,B), Dhaka 1207, Bangladesh
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7
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Lin Y, Zhang D, Shan S, Zhang W, Li R, Zhang A. Fluorine-containing amphiphilic quaternary ammonium salts for the suppression of Banana fusarium wilt. REACT FUNCT POLYM 2023. [DOI: 10.1016/j.reactfunctpolym.2022.105488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Takahashi H, Sovadinova I, Yasuhara K, Vemparala S, Caputo GA, Kuroda K. Biomimetic antimicrobial polymers—Design, characterization, antimicrobial, and novel applications. WIRES NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 15:e1866. [PMID: 36300561 DOI: 10.1002/wnan.1866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/15/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
Biomimetic antimicrobial polymers have been an area of great interest as the need for novel antimicrobial compounds grows due to the development of resistance. These polymers were designed and developed to mimic naturally occurring antimicrobial peptides in both physicochemical composition and mechanism of action. These antimicrobial peptide mimetic polymers have been extensively investigated using chemical, biophysical, microbiological, and computational approaches to gain a deeper understanding of the molecular interactions that drive function. These studies have helped inform SARs, mechanism of action, and general physicochemical factors that influence the activity and properties of antimicrobial polymers. However, there are still lingering questions in this field regarding 3D structural patterning, bioavailability, and applicability to alternative targets. In this review, we present a perspective on the development and characterization of several antimicrobial polymers and discuss novel applications of these molecules emerging in the field. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
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Affiliation(s)
- Haruko Takahashi
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
| | - Iva Sovadinova
- RECETOX, Faculty of Science Masaryk University Brno Czech Republic
| | - Kazuma Yasuhara
- Division of Materials Science, Graduate School of Science and Technology Nara Institute of Science and Technology Nara Japan
- Center for Digital Green‐Innovation Nara Institute of Science and Technology Nara Japan
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences CIT Campus Chennai India
- Homi Bhabha National Institute Training School Complex Mumbai India
| | - Gregory A. Caputo
- Department of Chemistry & Biochemistry Rowan University Glassboro New Jersey USA
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry University of Michigan Ann Arbor Michigan USA
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Soni GK, Wangoo N, Cokca C, Peneva K, Sharma RK. Ultrasensitive aptasensor for arsenic detection using quantum dots and guanylated Poly(methacrylamide). Anal Chim Acta 2022; 1209:339854. [DOI: 10.1016/j.aca.2022.339854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/04/2022] [Accepted: 04/16/2022] [Indexed: 11/16/2022]
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Yu L, Li K, Zhang J, Jin H, Saleem A, Song Q, Jia Q, Li P. Antimicrobial Peptides and Macromolecules for Combating Microbial Infections: From Agents to Interfaces. ACS APPLIED BIO MATERIALS 2022; 5:366-393. [PMID: 35072444 DOI: 10.1021/acsabm.1c01132] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bacterial resistance caused by the overuse of antibiotics and the shelter of biofilms has evolved into a global health crisis, which drives researchers to continuously explore antimicrobial molecules and strategies to fight against drug-resistant bacteria and biofilm-associated infections. Cationic antimicrobial peptides (AMPs) are considered to be a category of potential alternative for antibiotics owing to their excellent bactericidal potency and lesser likelihood of inducing drug resistance through their distinctive antimicrobial mechanisms. In this review, the hitherto reported plentiful action modes of AMPs are systematically classified into 15 types and three categories (membrane destructive, nondestructive membrane disturbance, and intracellular targeting mechanisms). Besides natural AMPs, cationic polypeptides, synthetic polymers, and biopolymers enable to achieve tunable antimicrobial properties by optimizing their structures. Subsequently, the applications of these cationic antimicrobial agents at the biointerface as contact-active surface coatings and multifunctional wound dressings are also emphasized here. At last, we provide our perspectives on the development of clinically significant cationic antimicrobials and related challenges in the translation of these materials.
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Affiliation(s)
- Luofeng Yu
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Kunpeng Li
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Jing Zhang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Haoyu Jin
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Atif Saleem
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Qing Song
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Qingyan Jia
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Peng Li
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
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11
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Chang CH, Chang CH, Yang YW, Chen HY, Yang SJ, Yao WC, Chao CY. Quaternized Amphiphilic Block Copolymers as Antimicrobial Agents. Polymers (Basel) 2022; 14:250. [PMID: 35054658 PMCID: PMC8781064 DOI: 10.3390/polym14020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/22/2021] [Accepted: 01/04/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, a novel polystyrene-block-quaternized polyisoprene amphipathic block copolymer (PS-b-PIN) is derived from anionic polymerization. Quaternized polymers are prepared through post-quaternization on a functionalized polymer side chain. Moreover, the antibacterial activity of quaternized polymers without red blood cell (RBCs) hemolysis can be controlled by block composition, side chain length, and polymer morphology. The solvent environment is highly related to the polymer morphology, forming micelles or other structures. The polymersome formation would decrease the hemolysis and increase the electron density or quaternized groups density as previous research and our experiment revealed. Herein, the PS-b-PIN with N,N-dimethyldodecylamine as side chain would form a polymersome structure in the aqueous solution to display the best inhibiting bacterial growth efficiency without hemolytic effect. Therefore, the different single-chain quaternized groups play an important role in the antibacterial action, and act as a controllable factor.
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Affiliation(s)
- Chih-Hao Chang
- Department of Orthopedics, National Taiwan University Hospital Jin-Shan Branch, No. 7, Yulu Rd., Wuhu Village, Jinshan Dist., New Taipei City 20844, Taiwan
- Department of Orthopedics, National Taiwan University College of Medicine, National Taiwan University Hospital, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan;
| | - Chih-Hung Chang
- Department of Orthopedic Surgery, Far Eastern Memorial Hospital, No. 21, Section 2, Nanya S. Road, Banciao Dist., New Taipei City 220, Taiwan;
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, No. 135, Yuan-Tung Road, Chuang-Li Dist., Taoyuan 320, Taiwan
| | - Ya-Wen Yang
- Department of Surgery, National Taiwan University Hospital, No. 7, Chung Shan S. Rd., Taipei 10002, Taiwan;
| | - Hsuan-Yu Chen
- Department of Orthopedics, National Taiwan University College of Medicine, National Taiwan University Hospital, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan;
| | - Shu-Jyuan Yang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan;
| | - Wei-Cheng Yao
- Department of Anesthesiology and Pain Medicine, Min-Sheng General Hospital, No. 168, Ching-Kuo Rd., Taoyuan 330, Taiwan;
| | - Chi-Yang Chao
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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12
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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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13
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Li X, İlk S, Liu Y, Raina DB, Demircan D, Zhang B. Nonionic nontoxic antimicrobial polymers: indole-grafted poly(vinyl alcohol) with pendant alkyl or ether groups. Polym Chem 2022. [DOI: 10.1039/d1py01504d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A series of new nonionic antimicrobial polymers with a biodegradable polyvinyl alcohol (PVA) backbone grafted with indole units and different hydrophobic alkyl or ether groups were synthesized by facile esterification.
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Affiliation(s)
- Xiaoya Li
- Lund University, Centre for Analysis and Synthesis, Department of Chemistry, P. O. Box 124, SE-22100 Lund, Sweden
| | - Sedef İlk
- Niğde Ömer Halisdemir University, Faculty of Medicine, Department of Immunology, TR-51240, Niğde, Turkey
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Glycoscience, SE-10691 Stockholm, Sweden
| | - Yang Liu
- Faculty of Medicine, Department of Clinical Sciences, Orthopedics, Lund University, Lund, Sweden
| | - Deepak Bushan Raina
- Faculty of Medicine, Department of Clinical Sciences, Orthopedics, Lund University, Lund, Sweden
| | - Deniz Demircan
- Lund University, Centre for Analysis and Synthesis, Department of Chemistry, P. O. Box 124, SE-22100 Lund, Sweden
| | - Baozhong Zhang
- Lund University, Centre for Analysis and Synthesis, Department of Chemistry, P. O. Box 124, SE-22100 Lund, Sweden
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14
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Borjihan Q, Wu H, Dong A, Gao H, Yang Y. AIEgens for Bacterial Imaging and Ablation. Adv Healthc Mater 2021; 10:e2100877. [PMID: 34342176 DOI: 10.1002/adhm.202100877] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/04/2021] [Indexed: 12/15/2022]
Abstract
Accurate and sensitive diagnosis of pathogenic bacterial infection is a fundamental first step for correct bacteria management, helping to avoid the development of drug-resistant bacteria caused by the inappropriate use and overuse of antibiotics. Fluorescence probes as a promising visual tool can help identify pathogens rapidly and reliably. However, rigidly structured traditional fluorescence probes generally suffer from the drawback of aggregation-caused quenching (ACQ) effect, which greatly undermines their advantages with respect to sensitivity. Luminogens with aggregation-induced emission properties, namely AIEgens, can overcome the ACQ effect and certain AIEgen-based materials are capable of generating reactive oxygen species (ROS) in the aggregate states. Hence, they have become powerful tools for imaging and killing bacteria. This review summarizes the recent advances in AIEgens for the diagnosis and treatment of pathogen infections. Special attention has been paid to the molecular design, the application in bacterial imaging and ablation in vitro and in vivo, and the biocompatibility of AIEgens. Finally, the challenges and prospects are discussed in terms of using AIEgens to advance precision therapies for pathogen infections.
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Affiliation(s)
- Qinggele Borjihan
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University Hohhot 010021 P. R. China
| | - Haixia Wu
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University Hohhot 010021 P. R. China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University Hohhot 010021 P. R. China
| | - Hui Gao
- State Key Laboratory of Separation Membranes and Membrane Processes School of Materials Science and Engineering Tiangong University Tianjin 300387 P. R. China
| | - Ying‐Wei Yang
- International Joint Research Laboratory of Nano‐Micro Architecture Chemistry College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
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15
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Mubeen B, Ansar AN, Rasool R, Ullah I, Imam SS, Alshehri S, Ghoneim MM, Alzarea SI, Nadeem MS, Kazmi I. Nanotechnology as a Novel Approach in Combating Microbes Providing an Alternative to Antibiotics. Antibiotics (Basel) 2021; 10:1473. [PMID: 34943685 PMCID: PMC8698349 DOI: 10.3390/antibiotics10121473] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/19/2021] [Accepted: 11/25/2021] [Indexed: 12/15/2022] Open
Abstract
The emergence of infectious diseases promises to be one of the leading mortality factors in the healthcare sector. Although several drugs are available on the market, newly found microorganisms carrying multidrug resistance (MDR) against which existing drugs cannot function effectively, giving rise to escalated antibiotic dosage therapies and the need to develop novel drugs, which require time, money, and manpower. Thus, the exploitation of antimicrobials has led to the production of MDR bacteria, and their prevalence and growth are a major concern. Novel approaches to prevent antimicrobial drug resistance are in practice. Nanotechnology-based innovation provides physicians and patients the opportunity to overcome the crisis of drug resistance. Nanoparticles have promising potential in the healthcare sector. Recently, nanoparticles have been designed to address pathogenic microorganisms. A multitude of processes that can vary with various traits, including size, morphology, electrical charge, and surface coatings, allow researchers to develop novel composite antimicrobial substances for use in different applications performing antimicrobial activities. The antimicrobial activity of inorganic and carbon-based nanoparticles can be applied to various research, medical, and industrial uses in the future and offer a solution to the crisis of antimicrobial resistance to traditional approaches. Metal-based nanoparticles have also been extensively studied for many biomedical applications. In addition to reduced size and selectivity for bacteria, metal-based nanoparticles have proven effective against pathogens listed as a priority, according to the World Health Organization (WHO). Moreover, antimicrobial studies of nanoparticles were carried out not only in vitro but in vivo as well in order to investigate their efficacy. In addition, nanomaterials provide numerous opportunities for infection prevention, diagnosis, treatment, and biofilm control. This study emphasizes the antimicrobial effects of nanoparticles and contrasts nanoparticles' with antibiotics' role in the fight against pathogenic microorganisms. Future prospects revolve around developing new strategies and products to prevent, control, and treat microbial infections in humans and other animals, including viral infections seen in the current pandemic scenarios.
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Affiliation(s)
- Bismillah Mubeen
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (B.M.); (A.N.A.); (R.R.); (I.U.)
| | - Aunza Nayab Ansar
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (B.M.); (A.N.A.); (R.R.); (I.U.)
| | - Rabia Rasool
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (B.M.); (A.N.A.); (R.R.); (I.U.)
| | - Inam Ullah
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (B.M.); (A.N.A.); (R.R.); (I.U.)
| | - Syed Sarim Imam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.S.I.); (S.A.)
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.S.I.); (S.A.)
| | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia;
| | - Sami I. Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia;
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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16
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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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17
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Bhat R, Foster LL, Rani G, Vemparala S, Kuroda K. The function of peptide-mimetic anionic groups and salt bridges in the antimicrobial activity and conformation of cationic amphiphilic copolymers. RSC Adv 2021; 11:22044-22056. [PMID: 35480841 PMCID: PMC9034112 DOI: 10.1039/d1ra02730a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/15/2021] [Indexed: 12/19/2022] Open
Abstract
Herein we report the synthesis of ternary statistical methacrylate copolymers comprising cationic ammonium (amino-ethyl methacrylate: AEMA), carboxylic acid (propanoic acid methacrylate: PAMA) and hydrophobic (ethyl methacrylate: EMA) side chain monomers, to study the functional role of anionic groups on their antimicrobial and hemolytic activities as well as the conformation of polymer chains. The hydrophobic monomer EMA was maintained at 40 mol% in all the polymers, with different percentages of cationic ammonium (AEMA) and anionic carboxylate (PAMA) side chains, resulting in different total net charge for the polymers. The antimicrobial and hemolytic activities of the copolymer were determined by the net charge of +3 or larger, suggesting that there was no distinct effect of the anionic carboxylate groups on the antimicrobial and hemolytic activities of the copolymers. However, the pH titration and atomic molecular dynamics simulations suggest that anionic groups may play a strong role in controlling the polymer conformation. This was achieved via formation of salt bridges between cationic and anionic groups, transiently crosslinking the polymer chain allowing dynamic switching between compact and extended conformations. These results suggest that inclusion of functional groups in general, other than the canonical hydrophobic and cationic groups in antimicrobial agents, may have broader implications in acquiring functional structures required for adequate antimicrobial activity. In order to explain the implications, we propose a molecular model in which formation of intra-chain, transient salt bridges, due to the presence of both anionic and cationic groups along the polymer, may function as "adhesives" which facilitate compact packing of the polymer chain to enable functional group interaction but without rigidly locking down the overall polymer structure, which may adversely affect their functional roles.
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Affiliation(s)
- Rajani Bhat
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - Leanna L Foster
- Macromolecular Science and Engineering Center, University of Michigan Ann Arbor Michigan 48109 USA
| | - Garima Rani
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad 500046 India
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences, C. I. T. Campus Taramani Chennai 600113 India
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan Ann Arbor Michigan 48109 USA
- Macromolecular Science and Engineering Center, University of Michigan Ann Arbor Michigan 48109 USA
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18
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Ahmed O, Mohamed H, Salem W, Afifi M, Song Y. Efficacy of Ethanolic Extract of Syzygium aromaticum in the Treatment of Multidrug-Resistant Pseudomonas aeruginosa Clinical Isolates Associated with Urinary Tract Infections. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:6612058. [PMID: 34221080 PMCID: PMC8221855 DOI: 10.1155/2021/6612058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 05/31/2021] [Indexed: 11/18/2022]
Abstract
Pseudomonas aeruginosa is an organism commonly found in the environment and one of the most common causes of human urinary tract infections in developed and developing countries. The present study aimed to investigate the effect of five medicinal plant extracts on the isolated drug-resistant P. aeruginosa clinical isolates. A total of 100 urine samples were collected from Nagaa Hammadi and Qena General Hospitals and private medical analysis laboratories in Qena governorate, Upper Egypt. Samples were screened for the prevalence of UTI pathogens by biochemical tests, antibiotics sensitivity, detection of virulence, and antibiotic-resistant genes by using multiplex PCR. P. aeruginosa is by far the subdominant causative agent with a percentage of 14%. Clinical isolates were multidrug-resistant, containing bla TEM, bla SHV, toxA, lasB, pslA, and fliC resistant and virulence genes. Based on bioactivity, the ethanolic extract of clove (Syzygium aromaticum) was the most active extract among tested medicinal plants and had the maximum zone of inhibition sized 23 mm against tested bacteria. The results of the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) showed a high decrease of inhibition within a concentration range of (10 to 121.25 mg/mL and 20 to 30 mg/mL, respectively). Further, major compounds of oleic acid (27.22%), guanosine (8.91%), indole (6.83%), 1-eicosene (6.30%), and cis-10-nonadecenoic acid (5.37%) were determined among 12 bioactive compounds in the ethanolic extract of S. aromaticum using gas chromatography-mass spectrometry (GC-MS). These results indicated that the ethanolic extract of S. aromaticum is a promising antibacterial agent for further studies aiming to control bacterial infections including MDR bacteria and develop novel therapeutic alternatives for the treatment of UTI.
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Affiliation(s)
- Osama Ahmed
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Hassan Mohamed
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Wesam Salem
- Department of Botany and Microbiology, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Magdy Afifi
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
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19
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Schito AM, Piatti G, Caviglia D, Zuccari G, Alfei S. Broad-Spectrum Bactericidal Activity of a Synthetic Random Copolymer Based on 2-Methoxy-6-(4-Vinylbenzyloxy)-Benzylammonium Hydrochloride. Int J Mol Sci 2021; 22:5021. [PMID: 34065133 PMCID: PMC8125966 DOI: 10.3390/ijms22095021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 12/11/2022] Open
Abstract
Low-molecular-weight organic ammonium salts exert excellent antimicrobial effects by interacting lethally with bacterial membranes. Unfortunately, short-term functionality and high toxicity limit their clinical application. On the contrary, the equivalent macromolecular ammonium salts, derived from the polymerization of monomeric ammonium salts, have demonstrated improved antibacterial potency, a lower tendency to develop resistance, higher stability, long-term activity, and reduced toxicity. A water-soluble non-quaternary copolymeric ammonium salt (P7) was herein synthetized by copolymerizing 2-methoxy-6-(4-vinylbenzyloxy)-benzylammonium hydrochloride monomer with N, N-di-methyl-acrylamide. The antibacterial activity of P7 was assessed against several multidrug-resistant (MDR) clinical isolates of both Gram-positive and Gram-negative species. Except for colistin-resistant Pseudomonas aeruginosa, most isolates were susceptible to P7, also including some Gram-negative bacteria with a modified charge in the external membrane. P7 showed remarkable antibacterial activity against isolates of Enterococcus, Staphylococcus, Acinetobacter, and Pseudomonas, and on different strains of Escherichia coli and Stenotrophomonas maltophylia, regardless of their antibiotic resistance. The lowest minimal inhibitory concentrations (MICs) observed were 0.6-1.2 µM and the minimal bactericidal concentrations (MBC) were frequently overlapping with the MICs. In 24-h time-kill and turbidimetric studies, P7 displayed a rapid non-lytic bactericidal activity. P7 could therefore represent a novel and potent tool capable of counteracting infections sustained by several bacteria that are resistant to the presently available antibiotics.
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Affiliation(s)
- Anna Maria Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Gabriela Piatti
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Debora Caviglia
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, I-16132 Genova, Italy; (A.M.S.); (G.P.); (D.C.)
| | - Guendalina Zuccari
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
| | - Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
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20
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Alfei S, Piatti G, Caviglia D, Schito AM. Synthesis, Characterization, and Bactericidal Activity of a 4-Ammoniumbuthylstyrene-Based Random Copolymer. Polymers (Basel) 2021; 13:1140. [PMID: 33918374 PMCID: PMC8038196 DOI: 10.3390/polym13071140] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 01/04/2023] Open
Abstract
The growing resistance of bacteria to current chemotherapy is a global concern that urgently requires new and effective antimicrobial agents, aimed at curing untreatable infection, reducing unacceptable healthcare costs and human mortality. Cationic polymers, that mimic antimicrobial cationic peptides, represent promising broad-spectrum agents, being less susceptible to develop resistance than low molecular weight antibiotics. We, thus, designed, and herein report, the synthesis and physicochemical characterization of a water-soluble cationic copolymer (P5), obtained by copolymerizing the laboratory-made monomer 4-ammoniumbuthylstyrene hydrochloride with di-methyl-acrylamide as uncharged diluent. The antibacterial activity of P5 was assessed against several multi-drug-resistant clinical isolates of both Gram-positive and Gram-negative species. Except for strains characterized by modifications of the membrane charge, most of the tested isolates were sensible to the new molecule. P5 showed remarkable antibacterial activity against several isolates of genera Enterococcus, Staphylococcus, Pseudomonas, Klebsiella, and against Escherichia coli, Acinetobacter baumannii and Stenotrophomonas maltophilia, displaying a minimum MIC value of 3.15 µM. In time-killing and turbidimetric studies, P5 displayed a rapid non-lytic bactericidal activity. Due to its water-solubility and wide bactericidal spectrum, P5 could represent a promising novel agent capable of overcoming severe infections sustained by bacteria resistant the presently available antibiotics.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy
| | - Gabriella Piatti
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy; (G.P.); (D.C.); (A.M.S.)
| | - Debora Caviglia
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy; (G.P.); (D.C.); (A.M.S.)
| | - Anna Maria Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy; (G.P.); (D.C.); (A.M.S.)
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21
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Hitchner MA, Necelis MR, Shirley D, Caputo GA. Effect of Non-natural Hydrophobic Amino Acids on the Efficacy and Properties of the Antimicrobial Peptide C18G. Probiotics Antimicrob Proteins 2021; 13:527-541. [PMID: 32889698 PMCID: PMC7933317 DOI: 10.1007/s12602-020-09701-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Antimicrobial peptides (AMPs) have been an area of great interest, due to the high selectivity of these molecules toward bacterial targets over host cells and the limited development of bacterial resistance to these molecules through evolution. The peptides are known to selectively bind to bacterial cell surfaces through electrostatic interactions, and subsequently, the peptides insert into the cell membrane and cause local disruptions of membrane integrity leading to cell death. Previous experiments showed that replacing the Leu residues in the AMP C18G with other naturally occurring hydrophobic residues resulted in side-chain-dependent activities. This work extends the investigation to non-natural hydrophobic amino acids and the effect on peptide activity. Minimal inhibitory concentration (MIC) results demonstrated that amino acid substitutions containing long flexible carbon chains maintained or increased antimicrobial activity compared to natural analogues. In solution, the peptide showed aggregation only with the most hydrophobic non-natural amino acid substitutions. Binding assays using Trp fluorescence confirm a binding preference for anionic lipids while quenching experiments demonstrated that the more hydrophobic peptides are more deeply buried in the anionic lipid bilayers compared to the zwitterionic bilayers. The most effective peptides at killing bacteria were also those which showed some level of disruption of bacterial membranes; however, one peptide sequence exhibited very strong activity and very low levels of red blood cell hemolysis, yielding a promising target for future development.
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Affiliation(s)
- Morgan A Hitchner
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ, 08028, USA
| | - Matthew R Necelis
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ, 08028, USA
| | - Devanie Shirley
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ, 08028, USA
| | - Gregory A Caputo
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ, 08028, USA.
- Department of Molecular and Cellular Biosciences, Rowan University, 201 Mullica Hill Road, Glassboro, NJ, 08028, USA.
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22
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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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23
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Makhlynets OV, Caputo GA. Characteristics and therapeutic applications of antimicrobial peptides. BIOPHYSICS REVIEWS 2021; 2:011301. [PMID: 38505398 PMCID: PMC10903410 DOI: 10.1063/5.0035731] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/31/2020] [Indexed: 12/20/2022]
Abstract
The demand for novel antimicrobial compounds is rapidly growing due to the phenomenon of antibiotic resistance in bacteria. In response, numerous alternative approaches are being taken including use of polymers, metals, combinatorial approaches, and antimicrobial peptides (AMPs). AMPs are a naturally occurring part of the immune system of all higher organisms and display remarkable broad-spectrum activity and high selectivity for bacterial cells over host cells. However, despite good activity and safety profiles, AMPs have struggled to find success in the clinic. In this review, we outline the fundamental properties of AMPs that make them effective antimicrobials and extend this into three main approaches being used to help AMPs become viable clinical options. These three approaches are the incorporation of non-natural amino acids into the AMP sequence to impart better pharmacological properties, the incorporation of AMPs in hydrogels, and the chemical modification of surfaces with AMPs for device applications. These approaches are being developed to enhance the biocompatibility, stability, and/or bioavailability of AMPs as clinical options.
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Affiliation(s)
- Olga V. Makhlynets
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, New York 13244, USA
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24
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Necelis MR, Santiago-Ortiz LE, Caputo GA. Investigation of the Role of Aromatic Residues in the Antimicrobial Peptide BuCATHL4B. Protein Pept Lett 2021; 28:388-402. [PMID: 32798369 PMCID: PMC8259864 DOI: 10.2174/0929866527666200813202918] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND Antimicrobial Peptides (AMPs) are an attractive alternative to traditional small molecule antibiotics as AMPs typically target the bacterial cell membrane. A Trp-rich peptide sequence derived from water buffalo (Bubalus bubalis), BuCATHL4B was previously identified as a broad-spectrum antimicrobial peptide. OBJECTIVE In this work, native Trp residues were replaced with other naturally occurring aromatic amino acids to begin to elucidate the importance of these residues on peptide activity. METHODS Minimal Inhibitory Concentration (MIC) results demonstrated activity against seven strains of bacteria. Membrane and bilayer permeabilization assays were performed to address the role of bilayer disruption in the activity of the peptides. Lipid vesicle binding and quenching experiments were also performed to gain an understanding of how the peptides interacted with lipid bilayers. RESULTS MIC results indicate the original, tryptophan-rich sequence, and the phenylalanine substituted sequences exhibit strong inhibition of bacterial growth. In permeabilization assays, peptides with phenylalanine substitutions have higher levels of membrane permeabilization than those substituted with tyrosine. In addition, one of the two-tyrosine substituted sequence, YWY, behaves most differently in the lowest antimicrobial activity, showing no permeabilization of bacterial membranes. Notably the antimicrobial activity is inherently species dependent, with varying levels of activity against different bacteria. CONCLUSION There appears to be little correlation between membrane permeabilization and activity, indicating these peptides may have additional mechanisms of action beyond membrane disruption. The results also identify two sequences, denoted FFF and YYW, which retain antibacterial activity but have markedly reduced hemolytic activity.
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Affiliation(s)
- Matthew R Necelis
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ, United States
| | | | - Gregory A Caputo
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ, United States
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25
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Takahashi H, Caputo GA, Kuroda K. Amphiphilic polymer therapeutics: an alternative platform in the fight against antibiotic resistant bacteria. Biomater Sci 2021; 9:2758-2767. [DOI: 10.1039/d0bm01865a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Amphiphilic antimicrobial polymers show promising potential as polymer therapeutics to fight drug resistant bacteria and biofilms.
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Affiliation(s)
- Haruko Takahashi
- Graduate School of Integrated Sciences for Life
- Hiroshima University
- Hiroshima 739-8526
- Japan
| | | | - Kenichi Kuroda
- Department of Biologic and Materials Sciences
- School of Dentistry
- University of Michigan
- Ann Arbor
- USA
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26
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Wyers D, Goris T, De Smet Y, Junkers T. Amino acid acrylamide mimics: creation of a consistent monomer library and characterization of their polymerization behaviour. Polym Chem 2021. [DOI: 10.1039/d1py00735a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel consistent approach to mimic the structure of biopolymers via precision polymer synthesis with reversible deactivation radical polymerization (RDRP).
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Affiliation(s)
- Dries Wyers
- Polymer Reaction Design Group, School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Toon Goris
- Polymer Reaction Design Group, School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Yana De Smet
- Polymer Reaction Design Group, School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Tanja Junkers
- Polymer Reaction Design Group, School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, VIC 3800, Australia
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27
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Claus J, Jastram A, Piktel E, Bucki R, Janmey PA, Kragl U. Polymerized ionic l
iquids‐based
hydrogels with intrinsic antibacterial activity: Modern weapons against a
ntibiotic‐resistant
infections. J Appl Polym Sci 2020. [DOI: 10.1002/app.50222] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Johanna Claus
- Department Life, Light & Matter, Faculty for Interdisciplinary Research University of Rostock Rostock Germany
- Institute of Chemistry Industrial Chemistry, University of Rostock Rostock Germany
| | - Ann Jastram
- Institute of Chemistry Industrial Chemistry, University of Rostock Rostock Germany
| | - Ewelina Piktel
- Department of Medical Microbiology and Nanobiomedical Engineering Medical University of Bialystok Bialystok Poland
| | - Robert Bucki
- Department of Medical Microbiology and Nanobiomedical Engineering Medical University of Bialystok Bialystok Poland
- Institute for Medicine and Engineering University of Pennsylvania Philadelphia Pennsylvania USA
| | - Paul A. Janmey
- Institute for Medicine and Engineering University of Pennsylvania Philadelphia Pennsylvania USA
| | - Udo Kragl
- Department Life, Light & Matter, Faculty for Interdisciplinary Research University of Rostock Rostock Germany
- Institute of Chemistry Industrial Chemistry, University of Rostock Rostock Germany
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28
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Salas-Ambrosio P, Tronnet A, Verhaeghe P, Bonduelle C. Synthetic Polypeptide Polymers as Simplified Analogues of Antimicrobial Peptides. Biomacromolecules 2020; 22:57-75. [PMID: 32786537 DOI: 10.1021/acs.biomac.0c00797] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides (AMPs) are naturally occurring macromolecules made of amino acids that are potent broad-spectrum antibiotics with potential as novel therapeutic agents. This review aims to summarize the fundamental principles concerning the structure and mechanism of action of these AMPs, in order to guide the design of polymeric analogues that organic chemistry can generate. Among those simplified analogues, this review particularly focuses on those made of amino acids called polypeptide polymers: they are showing great potential by providing one of the best biomimetic and bioactive structures for further biomaterials science applications.
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Affiliation(s)
| | - Antoine Tronnet
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse 31400, France
| | - Pierre Verhaeghe
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse 31400, France
| | - Colin Bonduelle
- Université Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
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29
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Anandkumar B, George RP, Philip J. Efficacy of imidazolium and piperidinium based ionic liquids on inhibiting biofilm formation on titanium and carbon steel surfaces. Anal Chim Acta 2020; 1126:38-51. [PMID: 32736723 DOI: 10.1016/j.aca.2020.05.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/29/2020] [Indexed: 12/11/2022]
Abstract
In the present study, the efficacies of three different cationic and anionic ionic liquids (ILs) on biofilm formation on materials used in cooling water systems were evaluated. Two imidazolium based ILs; 1-Ethyl 3-Methylimidazolium tetrafluoroborate - (IL-E) and 1-Butyl-3-methylimidazolium chloride - (IL-I) with anionic fluoride and chloride groups and one piperidinium based IL, N-methyl-N-propylpiperidinium bis(trifluoromethylsulfonyl)imide - (IL-M) with fluoromethyl group as anion were used. The efficacy of these ILs were evaluated on planktonic and sessile cells of major biofilm formers in cooling water systems using Gram negative bacterium Pseudomonas sp. and Gram positive bacterium Bacillus sp. Further their effect on inhibiting biofilm formation on titanium and carbon steel surfaces were also evaluated. Results showed that planktonic cells of Pseudomonas sp. and Bacillus sp. were effectively inhibited by 25 ppm of IL-M and IL-E, respectively. For both bacteria, 50 ppm of IL-I was enough to inhibit and eradicate the sessile cell formation. Among the three ILs, IL-E was the best in inhibiting the adhesion of bacterial cells on Ti and CS surfaces. These results suggest that Imidazolium based ILs are effective in controlling sessile cell formation and eradicating mature biofilm as compared to piperidinium based IL. Further, Imidazolium based IL with fluoride anion (IL-E) was the best in inhibiting adhesion of these bacterial cells and thereby biofilm formation on material surfaces. This study establishes the feasibility of using ILs in cooling water system for bacterial biofilm control along with other conventional biofouling control methods.
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Affiliation(s)
- B Anandkumar
- Corrosion Science and Technology Division, Metallurgy and Materials Group Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India.
| | - R P George
- Corrosion Science and Technology Division, Metallurgy and Materials Group Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India
| | - John Philip
- Corrosion Science and Technology Division, Metallurgy and Materials Group Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India; Homi Bhabha National Institute, Kalpakkam, 603102, India
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30
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Cho CA, Liang C, Perera J, Brimble MA, Swift S, Jin J. Guanidinylated Amphiphilic Polycarbonates with Enhanced Antimicrobial Activity by Extending the Length of the Spacer Arm and Micelle Self-Assembly. Macromol Biosci 2020; 20:e2000065. [PMID: 32459065 DOI: 10.1002/mabi.202000065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/01/2020] [Indexed: 01/23/2023]
Abstract
Nine guanidinylated amphiphilic polycarbonates are rationally designed and synthesized. Each polymer has the same biodegradable backbone but different side groups. The influence of the hydrophobic/hydrophilic effect on antimicrobial activities and cytotoxicity is systematically investigated. The results verify that tuning the length of the spacer arm between the cationic guanidine group and the polycarbonate backbone is an efficient design strategy to alter the hydrophobic/hydrophilic balance without changing the cationic charge density. A spacer arm of six methylene units (CH2 )6 shows the best antimicrobial activity (minimum inhibitory concentration, MIC = 40 µg mL-1 against Escherichia coli, MIC = 20 µg mL-1 against Staphylococcus aureus, MIC = 40 µg mL-1 against Candida albicans) with low hemolytic activity (HC50 > 2560 µg mL-1 ). Furthermore, the guanidinylated polycarbonates exhibit the ability to self-assemble and present micelle-like nanostructure due to their intrinsic amphiphilic macromolecular structure. Transmission electron microscopy and dynamic light scattering measurements confirm polymer micelle formation in aqueous solution with sizes ranging from 82 to 288 nm.
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Affiliation(s)
- Chloe A Cho
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Chao Liang
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Janesha Perera
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, 1142, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Simon Swift
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, 1142, New Zealand
| | - Jianyong Jin
- School of Chemical Sciences, University of Auckland, Auckland, 1142, New Zealand
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31
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Michl TD, Hibbs B, Hyde L, Postma A, Tran DTT, Zhalgasbaikyzy A, Vasilev K, Meagher L, Griesser HJ, Locock KES. Bacterial membrane permeability of antimicrobial polymethacrylates: Evidence for a complex mechanism from super-resolution fluorescence imaging. Acta Biomater 2020; 108:168-177. [PMID: 32179195 DOI: 10.1016/j.actbio.2020.03.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/31/2022]
Abstract
Amphiphilic polymers bearing cationic moieties are an emerging alternative to traditional antibiotics given their broad-spectrum activity and low susceptibility to the development of resistance. To date, however, much remains unclear regarding their mechanism of action. Using functional assays (ATP leakage, cell viability, DNA binding) and super-high resolution structured illumination microscopy (OMX-SR) of fluorescently tagged polymers, we present evidence for a complex mechanism, involving membrane permeation as well as cellular uptake, interaction with intracellular targets and possible complexation with bacterial DNA. STATEMENT OF SIGNIFICANCE: This manuscript details the first study to systematically and directly investigate the mechanism of action of antimicrobial polymers, using super-resolution fluorescence imaging as well as functional assays. While many in the field cite membrane permeation as the sole mechanism underlying the activity of such polymers, we present evidence for multimodal actions including high cellular uptake and interaction with intracellular targets. It is also the first report to show competitive binding of antimicrobial polymers with bacterial DNA in a dose-dependent manner.
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Affiliation(s)
- Thomas D Michl
- School of Engineering, University of South Australia, Mawson Lakes Blvd, Mawson Lakes, SA 5095, Australia
| | - Ben Hibbs
- Materials Characterisation and Fabrication Platform, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Lauren Hyde
- Materials Characterisation and Fabrication Platform, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Almar Postma
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia
| | - Dung Thuy Thi Tran
- School of Engineering, University of South Australia, Mawson Lakes Blvd, Mawson Lakes, SA 5095, Australia
| | - Aigerim Zhalgasbaikyzy
- School of Engineering, University of South Australia, Mawson Lakes Blvd, Mawson Lakes, SA 5095, Australia
| | - Krasimir Vasilev
- School of Engineering, University of South Australia, Mawson Lakes Blvd, Mawson Lakes, SA 5095, Australia
| | - Laurence Meagher
- Department of Materials Science and Engineering, Monash University, Clayton, VIC 3168, Australia
| | - Hans J Griesser
- Future Industries Institute, University of South Australia, Mawson Lakes Blvd, Mawson Lakes, SA 5095, Australia
| | - Katherine E S Locock
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia; Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.
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32
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Indole-based derivatives as potential antibacterial activity against methicillin-resistance Staphylococcus aureus (MRSA). Eur J Med Chem 2020; 194:112245. [DOI: 10.1016/j.ejmech.2020.112245] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/20/2020] [Accepted: 03/16/2020] [Indexed: 12/15/2022]
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33
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Rani G, Kuroda K, Vemparala S. Aggregation of methacrylate-based ternary biomimetic antimicrobial polymers in solution. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 33:064003. [PMID: 33105118 DOI: 10.1088/1361-648x/abc4c9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Using detailed atomistic simulations, we explore the morphological characteristics of aggregates formed in solution phase by ternary biomimetic antimicrobial (AM) methacrylate polymers, composed of hydrophobic, charged cationic and polar functional groups and compare it with aggregate morphologies of binary methacrylate polymers, composed only of hydrophobic and charged cationic functional groups. The effect of sequence of the constituent functional groups on aggregate conformation is also studied by considering random and block sequences along the polymer backbone. Our results show that while binary polymers tend to form robust aggregates, replacing some of the hydrophobic groups with overall charge neutral polar groups weakens the aggregate considerably, leading to increased conformational fluctuations and formation of loose-packed, open aggregates, particularly in the case of random ternary polymers. Interaction energy calculations clearly suggest that the role of inclusion of polar groups in ternary polymers is two-fold: (1) to reduce possible strong local concentration of hydrophobic groups and 'smear' the overall hydrophobicity along the polymer backbone to increase the solubility of the polymers (2) to compensate the loss of attractive hydrophobic interactions by forming attractive electrostatic interactions with the charged groups and contribute to aggregation formation, albeit weak. Given that most of the naturally occurring AM peptides have contributions from all the three functional groups, this study elucidates the functionally tuneable role of inclusion of polar groups in the way AM agents interact with each other in solution phase, which can eventually dictate their partitioning behaviour into bacterial and mammalian membranes.
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Affiliation(s)
- Garima Rani
- The Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai 600113, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109, United States of America
| | - Satyavani Vemparala
- The Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai 600113, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
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34
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Geiselhart CM, Mutlu H, Tzvetkova P, Barner-Kowollik C. Chemiluminescent self-reporting supramolecular transformations on macromolecular scaffolds. Polym Chem 2020. [DOI: 10.1039/d0py00332h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We introduce the synthesis of a self-reporting system with chemiluminescent output, which is regulated via dynamic supramolecular complex formation.
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Affiliation(s)
- Christina M. Geiselhart
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Hatice Mutlu
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Pavleta Tzvetkova
- Institute for Organic Chemistry and Institute for Biological Interfaces 4 – Magnetic Resonance
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Christopher Barner-Kowollik
- Macromolecular Architectures
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
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35
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Abstract
This feature article begins by outlining the problem of infection and its implication on healthcare. The initial introductory section is followed by a description of the four distinct classes of antibacterial coatings and materials, i.e., bacteria repealing, contact killing, releasing and responsive, that were developed over the years by our team and others. Specific examples of each individual class of antibacterial materials and a discussion on the pros and cons of each strategy are provided. The article contains a dedicated section focused on silver nanoparticle based coatings and materials, which have attracted tremendous interest from the scientific and medical communities. The article concludes with the author’s view regarding the future of the field.
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36
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Shi J, Wang M, Sun Z, Liu Y, Guo J, Mao H, Yan F. Aggregation-induced emission-based ionic liquids for bacterial killing, imaging, cell labeling, and bacterial detection in blood cells. Acta Biomater 2019; 97:247-259. [PMID: 31352110 DOI: 10.1016/j.actbio.2019.07.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 07/14/2019] [Accepted: 07/23/2019] [Indexed: 12/19/2022]
Abstract
A series of aggregation-induced emission (AIE)-based imidazolium-type ionic liquids (ILs) were designed and synthesized for bacterial killing and imaging, cell labeling, and bacterial detection in blood cells. The AIE-based ILs showed antibacterial activities against both Escherichia coli and Staphylococcus aureus. The carbon chain length of substitution at the N3 position of the imidazolium cations highly affects the antibacterial properties of ILs. Owing to their AIE characteristics, the ILs could selectively capture fluorescence image of dead bacteria while killing the bacteria. The fluorescence intensity varied with the concentration of bacteria, indicating that AIE-based ILs has potential as an antibacterial material and an efficient probe for bacterial viability assay. In addition, the synthesized AIE-based ILs exhibit relatively low cytotoxicity and hemolysis rate and therefore potential for cell labeling, as well as bacterial detection in blood cells. STATEMENT OF SIGNIFICANCE: Bacteria are ubiquitous, especially the pathogenic bacteria, which pose a serious threat to human health. There is an urgent need for materials with efficient antibacterial properties and biocompatibility and without causing drug resistance. In this work, we synthesized a series of aggregation-induced emission (AIE)-doped imidazolium type ionic liquids (ILs) with multifunction potential of bacterial killing and imaging, cell labeling, and detection of bacteria from blood cells. The synthesized AIE-based ILs can image dead bacteria at the same time of killing these bacteria, which can avoid the fluorescent dyeing process. Simultaneously, the fluorescent imaging of dead bacteria can be distinguished by the naked eye, and the fluorescence intensity from the AIE-based ILs varied with the concentration of bacteria. In addition, the AIE-based ILs exhibit relatively low cytotoxicity and hemolysis rate and therefore potential for cell labeling as well as detection of bacteria from red blood cell suspension.
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37
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Chen YF, Lai YD, Chang CH, Tsai YC, Tang CC, Jan JS. Star-shaped polypeptides exhibit potent antibacterial activities. NANOSCALE 2019; 11:11696-11708. [PMID: 31179463 DOI: 10.1039/c9nr02012h] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Peptide-based biomaterials are a promising class of antimicrobial agents that work by physically damaging bacterial cell membranes rather than targeting intracellular factors, resulting in less susceptibility to drug resistance. Herein we report the synthesis of cationic, star-shaped polypeptides with 3 to 8 arms and their evaluation as antimicrobial agents against different types of bacteria. The effects of the arm number and side chain group on their antimicrobial activities were systematically investigated. Compared to their linear counterparts, these star-shaped polypeptides exhibited potent antibacterial activity (which may involve adhesion and disruption processes). The increase of the arm number can efficiently increase the antibacterial activities up until 8 arms, which did not exhibit further improvement of antibacterial activities. Poly(l-lysine) (PLL) modified with an indole group (PLL-g-indo) exhibited the best antibacterial activity among all grafted copolypeptides and improved cytotoxic selectivity towards pathogens over mammalian cells without compromising their hemolytic activities. In vivo studies showed that the star-shaped PLL-g-indo can effectively suppress Enterohaemorrhagic E. coli (EHEC) infection and attenuate the clinical symptoms in mice, suggesting that they are promising antimicrobial agents.
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Affiliation(s)
- Yu-Fon Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
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38
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Kuroki A, Kengmo Tchoupa A, Hartlieb M, Peltier R, Locock KES, Unnikrishnan M, Perrier S. Targeting intracellular, multi-drug resistant Staphylococcus aureus with guanidinium polymers by elucidating the structure-activity relationship. Biomaterials 2019; 217:119249. [PMID: 31279102 DOI: 10.1016/j.biomaterials.2019.119249] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/20/2019] [Accepted: 06/05/2019] [Indexed: 11/29/2022]
Abstract
Intracellular persistence of bacteria represents a clinical challenge as bacteria can thrive in an environment protected from antibiotics and immune responses. Novel targeting strategies are critical in tackling antibiotic resistant infections. Synthetic antimicrobial peptides (SAMPs) are interesting candidates as they exhibit a very high antimicrobial activity. We first compared the activity of a library of ammonium and guanidinium polymers with different sequences (statistical, tetrablock and diblock) synthesized by RAFT polymerization against methicillin-resistant S. aureus (MRSA) and methicillin-sensitive strains (MSSA). As the guanidinium SAMPs were the most potent, they were used to treat intracellular S. aureus in keratinocytes. The diblock structure was the most active, reducing the amount of intracellular MSSA and MRSA by two-fold. We present here a potential treatment for intracellular, multi-drug resistant bacteria, using a simple and scalable strategy.
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Affiliation(s)
- Agnès Kuroki
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Matthias Hartlieb
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Raoul Peltier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Katherine E S Locock
- CSIRO Manufacturing, Clayton, Victoria, 3168, Australia; Department of Chemical and Biomolecular Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | | | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK; Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK; Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, 3052, Australia.
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39
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Ding Y, Sun Z, Shi R, Cui H, Liu Y, Mao H, Wang B, Zhu D, Yan F. Integrated Endotoxin Adsorption and Antibacterial Properties of Cationic Polyurethane Foams for Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2860-2869. [PMID: 30586274 DOI: 10.1021/acsami.8b19746] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gram-negative bacteria, containing toxic proinflammatory and pyrogenic substances [endotoxin or lipopolysaccharide (LPS)], can lead to infection and associated serious diseases, such as sepsis and septic shock. Development of antimicrobial materials with intrinsically endotoxin adsorption activity can prevent the release of bacterial toxic components while killing bacteria. Herein, a series of imidazolium-type polyurethane (PU) foams with antimicrobial properties were synthesized. The content effects of cationic moieties on the antimicrobial activities against Gram-negative Escherichia coli and Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus as well as the endotoxin adsorption property were investigated. The obtained PU foams show slightly higher efficiency against two Gram-negative strains than for Gram-positive one and high absorbability of LPS. A wound healing test using P. aeruginosa and its isolated LPS-treated mice as the models further demonstrated that imidazolium-type PU foams combine both antibacterial and endotoxin adsorption properties and may have a potential application as an antimicrobial wound dressing in a clinical setting.
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Affiliation(s)
- Yingying Ding
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital , Fudan University , Shanghai 200032 , China
| | - Zhe Sun
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Rongwei Shi
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Hengqing Cui
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital , Shanghai Jiaotong University School of Medicine , Shanghai 200011 , China
| | - Yangyang Liu
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital , Fudan University , Shanghai 200032 , China
| | - Hailei Mao
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital , Fudan University , Shanghai 200032 , China
| | - Bin Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital , Shanghai Jiaotong University School of Medicine , Shanghai 200011 , China
| | - Duming Zhu
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital , Fudan University , Shanghai 200032 , China
| | - Feng Yan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
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40
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Zhou X, He J, Zhou C. Strategies from nature: polycaprolactone-based mimetic antimicrobial peptide block copolymers with low cytotoxicity and excellent antibacterial efficiency. Polym Chem 2019. [DOI: 10.1039/c8py01394b] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PCL16-b-Kn diblock copolymers exhibit excellent antibacterial activities and low cytotoxicity. Meanwhile, they act by the pore-forming bactericidal mechanism without inducement of drug resistance.
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Affiliation(s)
- Xinyu Zhou
- School of Materials Science and Engineering
- Tongji University
- Shanghai
- China
| | - Jing He
- Department of Anatomy and Neurobiology
- Tongji University School of Medicine
- Shanghai
- China
| | - Chuncai Zhou
- School of Materials Science and Engineering
- Tongji University
- Shanghai
- China
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41
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Datta LP, Dutta D, Chakraborty A, Das TK. Tyrosine based cationic acrylates as potent antimicrobial agents against shigellosis. Biomater Sci 2019; 7:2611-2622. [DOI: 10.1039/c8bm01588k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Design of tyrosine-based cationic polymers with antimicrobial activities.
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Affiliation(s)
- Lakshmi Priya Datta
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Debanjan Dutta
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Arpita Chakraborty
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
| | - Tapan Kumar Das
- Department of Biochemistry and Biophysics
- University of Kalyani
- Kalyani-741235
- India
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42
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Fang C, Kong L, Ge Q, Zhang W, Zhou X, Zhang L, Wang X. Antibacterial activities of N-alkyl imidazolium-based poly(ionic liquid) nanoparticles. Polym Chem 2019. [DOI: 10.1039/c8py01290c] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Alkyl imidazolium-based PIL nanoparticles can effectively kill bacteria through adhering to the bacterial surface and then disrupting the cell membrane.
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Affiliation(s)
- Cao Fang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Lingli Kong
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Qing Ge
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Wei Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xianjing Zhou
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Li Zhang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xinping Wang
- Department of Chemistry
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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43
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Mortazavian H, Foster LL, Bhat R, Patel S, Kuroda K. Decoupling the Functional Roles of Cationic and Hydrophobic Groups in the Antimicrobial and Hemolytic Activities of Methacrylate Random Copolymers. Biomacromolecules 2018; 19:4370-4378. [PMID: 30350596 PMCID: PMC6238640 DOI: 10.1021/acs.biomac.8b01256] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we report the antimicrobial and hemolytic activities of ternary statistical methacrylate copolymers consisting of cationic ammonium (amino-ethyl methacrylate: AEMA), hydrophobic alkyl (ethyl methacrylate: EMA), and neutral hydroxyl (hydroxyethyl methacrylate: HEMA) side chain monomers. The cationic and hydrophobic functionalities of copolymers mimic the cationic amphiphilicity of naturally occurring antimicrobial peptides (AMPs). The HEMA monomer units were used to separately modulate the compositions of cationic and hydrophobic monomers, and we investigated the effect of each component on the antimicrobial and hemolytic activities of copolymers. Our data indicated that increasing the number of cationic groups of the copolymers to be more than 30 mol % did not increase their antimicrobial activity against Escherichia coli. The number of cationic side chains in a polymer chain at this threshold is 5.5-7.7, which is comparable to those of natural antimicrobial peptides such as maginin (+6). The MIC values of copolymers with >30 mol % of AEMA depend on only the mol % of EMA, indicating that the hydrophobic interactions of the copolymers with E. coli cell membranes determine the antimicrobial activity of copolymers. These results suggest that the roles of cationic and hydrophobic groups can be controlled independently by design in the ternary copolymers studied here.
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Affiliation(s)
- Hamid Mortazavian
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Leanna L. Foster
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48176
| | - Rajani Bhat
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Shyrie Patel
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48176
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44
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Grace JL, Schneider-Futschik EK, Elliott AG, Amado M, Truong NP, Cooper MA, Li J, Davis TP, Quinn JF, Velkov T, Whittaker MR. Exploiting Macromolecular Design To Optimize the Antibacterial Activity of Alkylated Cationic Oligomers. Biomacromolecules 2018; 19:4629-4640. [PMID: 30359516 DOI: 10.1021/acs.biomac.8b01317] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
There is growing interest in synthetic polymers which co-opt the structural features of naturally occurring antimicrobial peptides. However, our understanding of how macromolecular architecture affects antibacterial activity remains limited. To address this, we investigated whether varying architectures of a series of block and statistical co-oligomers influenced antibacterial and hemolytic activity. Cu(0)-mediated polymerization was used to synthesize oligomers constituting 2-(Boc-amino)ethyl acrylate units and either diethylene glycol ethyl ether acrylate (DEGEEA) or poly(ethylene glycol) methyl ether acrylate units with varying macromolecular architecture; subsequent deprotection produced primary amine functional oligomers. Further guanylation provided an additional series of antimicrobial candidates. Both chemical composition and macromolecular architecture were shown to affect antimicrobial activity. A broad spectrum antibacterial oligomer (containing guanidine moieties and DEGEEA units) was identified that possessed promising activity (MIC = 2 μg mL-1) toward both Gram-negative and Gram-positive bacteria. Bacterial membrane permeabilization was identified as an important contributor to the mechanism of action.
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Affiliation(s)
- James L Grace
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia
| | - Elena K Schneider-Futschik
- Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences , The University of Melbourne , Parkville , VIC 3010 , Australia
| | - Alysha G Elliott
- Institute of Molecular Biosciences , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Maite Amado
- Institute of Molecular Biosciences , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Nghia P Truong
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia
| | - Matthew A Cooper
- Institute of Molecular Biosciences , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Jian Li
- Monash Biomedicine Discovery Institute, Department of Microbiology , Monash University , Clayton , Victoria 3800 , Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Department of Chemistry , Warwick University , Gibbet Hill , Coventry , CV4 7AL , U.K
| | - John F Quinn
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia
| | - Tony Velkov
- Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences , The University of Melbourne , Parkville , VIC 3010 , Australia
| | - Michael R Whittaker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia.,Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Pde , Parkville , VIC 3052 , Australia
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45
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Zhang T, Guo J, Ding Y, Mao H, Yan F. Redox-responsive ferrocene-containing poly(ionic liquid)s for antibacterial applications. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9348-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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46
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Xu H, Fang Z, Tian W, Wang Y, Ye Q, Zhang L, Cai J. Green Fabrication of Amphiphilic Quaternized β-Chitin Derivatives with Excellent Biocompatibility and Antibacterial Activities for Wound Healing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1801100. [PMID: 29845657 DOI: 10.1002/adma.201801100] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/23/2018] [Indexed: 06/08/2023]
Abstract
Bacterial infection has always been a great threat to public health, and new antimicrobials to combat it are urgently needed. Here, a series of quaternized β-chitin derivatives is prepared simply and homogeneously in an aqueous KOH/urea solution, which is a high-efficiency, energy-saving, and "green" route for the modification of chitin. The mild reaction conditions keep the acetamido groups of β-chitin intact and introduce quaternary ammonium groups on the primary hydroxyl at the C-6 position of the chitin backbone, allowing the quaternized β-chitin derivatives (QCs) to easily form micelles. These QCs are found to exhibit excellent antimicrobial activities against Escherichia coli, Staphylococcus aureus, Candida albicans, and Rhizopus oryzae with minimum inhibitory concentrations (MICs) of 8, 12, 60, and 40 µg mL-1 , respectively. As a specific highlight, their inherent outstanding biocompatibility and significant accelerating effects on the healing of uninfected, E. coli-infected, and S. aureus-infected wounds imply that these novel polysaccharide-based materials can be used as dressings for clinical skin regeneration, particularly for infected wounds.
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Affiliation(s)
- Huan Xu
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Zehong Fang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, P. R. China
| | - Weiqun Tian
- School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, P. R. China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, P. R. China
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, P. R. China
| | - Lina Zhang
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Jie Cai
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
- Research Institute of Shenzhen, Wuhan University, Shenzhen, 518057, P. R. China
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47
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Konai MM, Bhattacharjee B, Ghosh S, Haldar J. Recent Progress in Polymer Research to Tackle Infections and Antimicrobial Resistance. Biomacromolecules 2018; 19:1888-1917. [PMID: 29718664 DOI: 10.1021/acs.biomac.8b00458] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Global health is increasingly being threatened by the rapid emergence of drug-resistant microbes. The ability of these microbes to form biofilms has further exacerbated the scenario leading to notorious infections that are almost impossible to treat. For addressing this clinical threat, various antimicrobial polymers, polymer-based antimicrobial hydrogels and polymer-coated antimicrobial surfaces have been developed in the recent past. This review aims to discuss such polymer-based antimicrobial strategies with a focus on their current advancement in the field. Antimicrobial polymers, whose designs are inspired from antimicrobial peptides (AMPs), are described with an emphasis on structure-activity analysis. Additionally, antibiofilm activity and in vivo efficacy are delineated to elucidate the real potential of these antimicrobial polymers as possible therapeutics. Antimicrobial hydrogels, prepared from either inherently antimicrobial polymers or biocide-loaded into polymer-derived hydrogel matrix, are elaborated followed by various strategies to engineer polymer-coated antimicrobial surfaces. In the end, the current challenges are accentuated along with future directions for further expansion of the field toward tackling infections and antimicrobial resistance.
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Affiliation(s)
- Mohini Mohan Konai
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Brinta Bhattacharjee
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Sreyan Ghosh
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
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48
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Pranantyo D, Xu LQ, Kang ET, Chan-Park MB. Chitosan-Based Peptidopolysaccharides as Cationic Antimicrobial Agents and Antibacterial Coatings. Biomacromolecules 2018; 19:2156-2165. [DOI: 10.1021/acs.biomac.8b00270] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dicky Pranantyo
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Kent Ridge, Singapore 117585
| | - Li Qun Xu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Kent Ridge, Singapore 117585
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Kent Ridge, Singapore 117585
| | - Mary B. Chan-Park
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
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49
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Gravel J, Schmitzer AR. Imidazolium and benzimidazolium-containing compounds: from simple toxic salts to highly bioactive drugs. Org Biomol Chem 2018; 15:1051-1071. [PMID: 28045182 DOI: 10.1039/c6ob02293f] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The toxicity of simple imidazolium and benzimidazolium salts started to be more and more investigated in the last few years and was taken in consideration in the context of microorganisms, plants and more evolved organisms' exposure. However, the toxicity of these salts can be exploited in the development of different biological applications by incorporating them in the structure of compounds that specifically target microorganisms and cancer cells. We highlight in this minireview the way researchers became aware of the inherent problem of the stability and bioaccumulation of imidazolium and benzimidazolium salts and how they found inspiration to exploit their toxicity by incorporating them into new highly potent drugs.
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Affiliation(s)
- J Gravel
- Département de Chimie- Université de Montréal, 2900 Edouard Montpetit CP 6128 Succursalle Centre Ville Montréal Québec, Canada H3C 3J7.
| | - A R Schmitzer
- Département de Chimie- Université de Montréal, 2900 Edouard Montpetit CP 6128 Succursalle Centre Ville Montréal Québec, Canada H3C 3J7.
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50
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