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Xue M, Chakraborty S, Gao R, Wang S, Gu M, Shen N, Wei L, Cao C, Sun X, Cai J. Antimicrobial Guanidinylate Polycarbonates Show Oral In Vivo Efficacy Against Clostridioides Difficile. Adv Healthc Mater 2024; 13:e2303295. [PMID: 38321619 PMCID: PMC11144102 DOI: 10.1002/adhm.202303295] [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: 09/27/2023] [Revised: 01/22/2024] [Indexed: 02/08/2024]
Abstract
The emerging antibiotic resistance has been named by the World Health Organization (WHO) as one of the top 10 threats to public health. Notably, methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus faecalis (VREF) are designated as serious threats, whereas Clostridioides difficile (C. difficile) is recognized as one of the most urgent threats to human health and unmet medical need. Herein, they report the design and application of novel biodegradable polymers - the lipidated antimicrobial guanidinylate polycarbonates. These polymers showed potent antimicrobial activity against a panel of bacteria with fast-killing kinetics and low resistance development tendency, mainly due to their bacterial membrane disruption mechanism. More importantly, the optimal polymer showed excellent antibacterial activity against C. difficile infection (CDI) in vivo via oral administration. In addition, compared with vancomycin, the polymer demonstrated a much-prolonged therapeutic effect and virtually diminished recurrence rate of CDI. The convenient synthesis, easy scale-up, low cost, as well as biodegradability of this class of polycarbonates, together with their in vitro broad-spectrum antimicrobial activity and orally in vivo efficacy against CDI, suggest the great potential of lipidated guandinylate polycarbonates as a new class of antibacterial biomaterials to treat CDI and combat emerging antibiotic resistance.
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Affiliation(s)
- Menglin Xue
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
| | - Soumyadeep Chakraborty
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd, Tampa, FL 33612, USA
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
| | - Shaohui Wang
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd, Tampa, FL 33612, USA
| | - Meng Gu
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
| | - Ning Shen
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
| | - Lulu Wei
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
| | - Chuanhai Cao
- Department of Pharmaceutical Science, Taneja College of Pharmacy, University of South Florida, Tampa, FL 33612, USA
| | - Xingmin Sun
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd, Tampa, FL 33612, USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, FL 33620, USA
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Su M, Su Y. Recent Advances in Amphipathic Peptidomimetics as Antimicrobial Agents to Combat Drug Resistance. Molecules 2024; 29:2492. [PMID: 38893366 PMCID: PMC11173824 DOI: 10.3390/molecules29112492] [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: 04/26/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
The development of antimicrobial drugs with novel structures and clear mechanisms of action that are active against drug-resistant bacteria has become an urgent need of safeguarding human health due to the rise of bacterial drug resistance. The discovery of AMPs and the development of amphipathic peptidomimetics have lay the foundation for novel antimicrobial agents to combat drug resistance due to their overall strong antimicrobial activities and unique membrane-active mechanisms. To break the limitation of AMPs, researchers have invested in great endeavors through various approaches in the past years. This review summarized the recent advances including the development of antibacterial small molecule peptidomimetics and peptide-mimic cationic oligomers/polymers, as well as mechanism-of-action studies. As this exciting interdisciplinary field is continuously expanding and growing, we hope this review will benefit researchers in the rational design of novel antimicrobial peptidomimetics in the future.
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Affiliation(s)
- Ma Su
- College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China
| | - Yongxiang Su
- College of Chemistry and Environmental Engineering, Jiaozuo University, Ren-Min Road, Jiaozuo 454000, China;
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3
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Liu JY, Jia JJ, Liu M, Duan H, Hu ML, Liu C, Xue RY, Jin ZL, Zhang SS, Li GC, Feng R, Jin Z, Li HB, He L. A novel indolylbenzoquinone compound HL-J6 suppresses biofilm formation and α-toxin secretion in methicillin-resistant Staphylococcus aureus. Int J Antimicrob Agents 2023; 62:106972. [PMID: 37741585 DOI: 10.1016/j.ijantimicag.2023.106972] [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: 02/01/2023] [Revised: 08/24/2023] [Accepted: 09/15/2023] [Indexed: 09/25/2023]
Abstract
Eradication of methicillin-resistant Staphylococcus aureus (MRSA) is challenging due to multi-drug resistance of strains and biofilm formation, the latter of which is an important barrier to the penetration of antibiotics and host defences. As such, there is an urgent need to discover and develop novel agents to fight MRSA-associated infection. In this study, HL-J6, a novel indolylbenzoquinone compound, was shown to inhibit S. aureus strains, with a minimum inhibitory concentration against MRSA252 of 2 µg/mL. Moreover, HL-J6 exhibited potent antibiofilm activity in vitro and was able to kill bacteria in biofilm. In the mouse models of wound infection, HL-J6 treatment reduced the MRSA load significantly and inhibited biofilm formation on the wounds. The potent targets of its antibiofilm activity were explored by real-time reverse transcriptase polymerase chain rection, which indicated that HL-J6 downregulated the transcription levels of sarA, atlAE and icaADBC. Moreover, Western blot results showed that HL-J6 reduced the secretion level of α-toxin, a major virulence factor. These findings indicate that HL-J6 is a promising lead compound for the development of novel drugs against MRSA biofilm infections.
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Affiliation(s)
- Jing-Yi Liu
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jing-Jing Jia
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Centre for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - Ming Liu
- Department of Pharmaceutical Analysis, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Hao Duan
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China; School of Clinical Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
| | - Ming-Li Hu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Centre for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - Chang Liu
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ruo-Yi Xue
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zi-Li Jin
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Shan-Shan Zhang
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China; School of Clinical Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
| | - Guo-Cheng Li
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Rang Feng
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zhe Jin
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China
| | - Hai-Bo Li
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing, China.
| | - Ling He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Centre for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
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4
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Sreepian PM, Rattanasinganchan P, Sreepian A. Antibacterial Efficacy of Citrus hystrix (Makrut Lime) Essential Oil against Clinical Multidrug-Resistant Methicillin-Resistant and Methicillin-Susceptible Staphylococcus aureus Isolates. Saudi Pharm J 2023. [DOI: 10.1016/j.jsps.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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5
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Zhou W, Shi G, Zhao P, Zhang G, Yang P, Li B, Li B, Wan X, Zheng Y. Dynamic helical cationic polyacetylenes for fast and highly efficient killing of bacteria. Acta Biomater 2023; 161:134-143. [PMID: 36804537 DOI: 10.1016/j.actbio.2023.02.017] [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: 09/27/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/19/2023]
Abstract
The antimicrobial activity of native antimicrobial peptides (AMPs) is often attributed to their helical structure, but the effectiveness of synthetic mimics with dynamic helical conformations, such as antimicrobial cationic polymers (ACPs), has not been well studied. Herein we demonstrate the antimicrobial activity of pyrrolidinium-pendant polyacetylenes (PAs) with dynamic helical conformations. The PAs exhibit fast and efficient antimicrobial activity against a wide range of pathogens, with low toxicity to mammalian cells and minimal risk of antibiotic resistance. In addition, the full-thickness wound infection model in mice has demonstrated the favorable biocompatibility and effective in vivo antibacterial capabilities of these PAs. Our data suggest that the dynamic helical structure of these PAs allows them to adapt and form pores in the bacterial membrane upon interaction, leading to their potent antimicrobial activity. This work investigated the antibacterial mechanism of dynamic helical ACPs, which provides valuable guidance for the rational design of high-performance antimicrobial agents. STATEMENT OF SIGNIFICANCE: Our study represents a significant contribution to the literature on antimicrobial cationic polymers (ACPs) as alternatives to antibiotics. Through a systematic investigation of the role of dynamic helical conformation in polyacetylenes (PAs) and the use of PAs with adaptive structure for the first time, we have provided valuable insights into the bacterial membrane action and killing mechanisms of these polymers. The results of our study, including fast killing rates and minimum inhibitory concentrations as low as 4-16 µg/mL against a broad range of pathogens and strong in vivo antibacterial activity, demonstrate the potential of these ACPs as high-performance antimicrobials. Our findings may guide the design of future ACPs with enhanced antimicrobial activity.
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Affiliation(s)
- Wei Zhou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ge Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Peng Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Gai Zhang
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Peilang Yang
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Bohan Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Bowen Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yijun Zheng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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6
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Evaluation of the Efficiency of Random and Diblock Methacrylate-Based Amphiphilic Cationic Polymers against Major Bacterial Pathogens Associated with Cystic Fibrosis. Antibiotics (Basel) 2023; 12:antibiotics12010120. [PMID: 36671321 PMCID: PMC9854508 DOI: 10.3390/antibiotics12010120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Cystic fibrosis (CF) is associated with repeated lung bacterial infection, mainly by Pseudomonas aeruginosa, Staphylococcus aureus, and Mycobacterium abscessus, all known to be or becoming resistant to several antibiotics, often leading to therapeutic failure and death. In this context, antimicrobial peptides and antimicrobial polymers active against resistant strains and less prompt to cause resistance, appear as a good alternative to conventional antibiotics. In the present study, methacrylate-based copolymers obtained by radical chemistry were evaluated against CF-associated bacterial strains. Results showed that the type (Random versus Diblock) and the size of the copolymers affected their antibacterial activity and toxicity. Among the different copolymers tested, four (i.e., Random10200, Random15000, Random23900, and Diblock9500) were identified as the most active and the safest molecules and were further investigated. Data showed that they inserted into bacterial lipids, leading to a rapid membranolytic effect and killing of the bacterial. In relation with their fast bactericidal action and conversely to conventional antibiotics, those copolymers did not induce a resistance and remained active against antibiotic-resistant strains. Finally, the selected copolymers possessed a preventive effect on biofilm formation, although not exhibiting disruptive activity. Overall, the present study demonstrates that methacrylate-based copolymers are an interesting alternative to conventional antibiotics in the treatment of CF-associated bacterial infection.
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7
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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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8
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Chiloeches A, Cuervo-Rodríguez R, Gil-Romero Y, Fernández-García M, Echeverría C, Muñoz-Bonilla A. Electrospun Polylactic Acid-Based Fibers Loaded with Multifunctional Antibacterial Biobased Polymers. ACS APPLIED POLYMER MATERIALS 2022; 4:6543-6552. [PMID: 36590989 PMCID: PMC9799243 DOI: 10.1021/acsapm.2c00928] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/18/2022] [Indexed: 05/03/2023]
Abstract
Here, we report the development of antibacterial and compostable electrospun polylactic acid (PLA) fibers by incorporation of a multifunctional biobased polymer in the process. The multifunctional polymer was synthesized from the bio-sourced itaconic acid building block by radical polymerization followed by click chemistry reaction with hydantoin groups. The resulting polymer possesses triazole and hydantoin groups available for further N-alkylation and chlorination reaction, which provide antibacterial activity. This polymer was added to the electrospinning PLA solution at 10 wt %, and fiber mats were successfully prepared. The obtained fibers were surface-modified through the accessible functional groups, leading to the corresponding cationic triazolium and N-halamine groups. The fibers with both antibacterial functionalities demonstrated high antibacterial activity against Gram-positive and Gram-negative bacteria. While the fibers with cationic surface groups are only effective against Gram-positive bacteria (Staphylococcus epidermidis and Staphylococcus aureus), upon chlorination, the activity against Gram-negative Escherichia coli and Pseudomonas aeruginosa is significantly improved. In addition, the compostability of the electrospun fibers was tested under industrial composting conditions, showing that the incorporation of the antibacterial polymer does not impede the disintegrability of the material. Overall, this study demonstrates the feasibility of this biobased multifunctional polymer as an antibacterial agent for biodegradable polymeric materials with potential application in medical uses.
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Affiliation(s)
- A. Chiloeches
- Instituto
de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
- Escuela
Internacional de Doctorado de la Universidad Nacional de Educación
a Distancia (UNED), C/Bravo
Murillo, 38, 28015 Madrid, Spain
| | - R. Cuervo-Rodríguez
- Facultad
de Ciencias Químicas, Universidad
Complutense de Madrid, Avenida Complutense s/n, Ciudad Universitaria, 28040 Madrid, Spain
| | - Y. Gil-Romero
- Hospital
Universitario de Móstoles, C/Dr. Luis Montes, s/n, Móstoles, 28935 Madrid, Spain
| | - M. Fernández-García
- Instituto
de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
- Interdisciplinary
Platform for Sustainable Plastics Towards a Circular Economy-Spanish
National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
| | - C. Echeverría
- Instituto
de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
- Interdisciplinary
Platform for Sustainable Plastics Towards a Circular Economy-Spanish
National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
| | - A. Muñoz-Bonilla
- Instituto
de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
- Interdisciplinary
Platform for Sustainable Plastics Towards a Circular Economy-Spanish
National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
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9
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Li F, Lin L, Chi J, Wang H, Du M, Feng D, Wang L, Luo R, Chen H, Quan G, Cai J, Pan X, Wu C, Lu C. Guanidinium-rich lipopeptide functionalized bacteria-absorbing sponge as an effective trap-and-kill system for the elimination of focal bacterial infection. Acta Biomater 2022; 148:106-118. [PMID: 35671875 DOI: 10.1016/j.actbio.2022.05.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 11/01/2022]
Abstract
Focal bacterial infections are often difficult to treat due to the rapid emergence of antibiotic-resistant bacteria, high risk of relapse, and severe inflammation at local lesions. To address multidrug-resistant skin and soft tissue infections, a bacteria-absorbing sponge was prepared to involve a "trap-and-kill" mechanism. The system describes a guanidinium-rich lipopeptide functionalized lyotropic liquid-crystalline hydrogel with bicontinuous cubic networks. Amphiphilic lipopeptides can be spontaneously anchored to the lipid-water interface, exposing their bacterial targeting sequences to enhance antibacterial trapping/killing activity. Computational simulations supported our structural predictions, and the sponge was confirmed to successfully remove ∼98.8% of the bacteria in the medium. Release and degradation behavior studies indicated that the bacteria-absorbing sponge could degrade, mediate enzyme-responsive lipopeptide release, or generate ∼200 nm lipopeptide nanoparticles with environmental erosion. This implies that the sponge can effectively capture and isolate high concentrations of bacteria at the infected site and then sustainably release antimicrobial lipopeptides into deep tissues for the eradication of residual bacteria. In the animal experiment, we found that the antibacterial performance of the bacterial-absorbing sponge was significant, which demonstrated not only a long-term inhibition effect to disinfect and avoid bacterial rebound, but also a unique advantage to protect tissue from bacterial attack. STATEMENT OF SIGNIFICANCE: Host defense peptides/peptidomimetics (HDPs) have shown potential for the elimination of focal bacterial infections, but the application of their topical formulations suffers from time-consuming preparation processes, indistinctive toxicity reduction effects, and inefficient bacterial capture ability. To explore new avenues for the development of easily prepared, low-toxicity and high-efficiency topical antimicrobials, a guanidinium-rich lipopeptide was encapsulated in a lyotropic liquid-crystalline hydrogel (denoted as "bacteria-absorbing sponge") to achieve complementary superiorities. The superior characteristic of the bacteria-absorbing sponge involves a "trap-and-kill" mechanism, which undergoes not only a long-term inhibition effect to disinfect and avoid bacterial rebound, but also effective bacterial capture and isolating action to confine bacterial diffusion and protect tissues from bacterial attack.
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Affiliation(s)
- Feng Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Liming Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Hui Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Minqun Du
- Guangdong Women and Children Hospital, Guangzhou 511400, China
| | - Disang Feng
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Liqing Wang
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Rui Luo
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Hangping Chen
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China.
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10
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Ma P, Wu Y, Jiang W, Shao N, Zhou M, Chen Y, Xie J, Qiao Z, Liu R. Biodegradable Peptide Polymers as Alternatives to Antibiotics Used in Aquaculture. Biomater Sci 2022; 10:4193-4207. [DOI: 10.1039/d2bm00672c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pressure of antimicrobial resistance has forced many countries to reduce or even prohibit the use of antibiotics in feed. Therefore, it is in urgent need to develop alternatives to...
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11
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Yang L, Niyazi G, Qi Y, Yao Z, Huang L, Wang Z, Guo L, Liu D. Plasma-Activated Saline Promotes Antibiotic Treatment of Systemic Methicillin-Resistant Staphylococcus aureus Infection. Antibiotics (Basel) 2021; 10:antibiotics10081018. [PMID: 34439068 PMCID: PMC8388904 DOI: 10.3390/antibiotics10081018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 12/31/2022] Open
Abstract
Systemic infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are life-threatening due to their strong multidrug resistance, especially since the biofilms formed by MRSA are more difficult to inactivate by antibiotics, causing long term recurrence of infection. Plasma-activated saline (PAS), a derived form of cold atmospheric-pressure plasma, can effectively inactivate bacteria and cancer cells and has been applied to sterilization and cancer treatment. Previous studies have demonstrated that the pretreatment of MRSA with PAS could promote the action of antibiotics. Here, the PAS was used as an antibiotic adjuvant to promote the inactivation of MRSA biofilms by rifampicin and vancomycin, and the combined treatment reduced approximately 6.0-log10 MRSA cells in biofilms. The plasma-activated saline and rifampicin synergistically and effectively reduced the systemic infection in the murine model. The histochemical analysis and the blood hematological and biochemical test demonstrated that the combined treatment with plasma-activated saline and rifampicin improved the blood hematological and biochemical parameters of infected mice by reducing the infection. Therefore, PAS based on plasma technology represents a new strategy for the treatment of infectious disease caused by multidrug-resistant bacteria and alleviating antibiotic resistance.
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Affiliation(s)
- Lu Yang
- School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (L.Y.); (G.N.)
| | - Gulimire Niyazi
- School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (L.Y.); (G.N.)
| | - Yu Qi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
| | - Zhiqian Yao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
| | - Lingling Huang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
| | - Zifeng Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
| | - Li Guo
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
- Correspondence: (L.G.); (D.L.)
| | - Dingxin Liu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Q.); (Z.Y.); (L.H.); (Z.W.)
- Correspondence: (L.G.); (D.L.)
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12
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Yu W, Maynard E, Chiaradia V, Arno MC, Dove AP. Aliphatic Polycarbonates from Cyclic Carbonate Monomers and Their Application as Biomaterials. Chem Rev 2021; 121:10865-10907. [DOI: 10.1021/acs.chemrev.0c00883] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Yu
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Edward Maynard
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Viviane Chiaradia
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Maria C. Arno
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
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13
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Kanth S, Nagaraja A, Puttaiahgowda YM. Polymeric approach to combat drug-resistant methicillin-resistant Staphylococcus aureus. JOURNAL OF MATERIALS SCIENCE 2021; 56:7265-7285. [PMID: 33518799 PMCID: PMC7831626 DOI: 10.1007/s10853-021-05776-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 01/03/2021] [Indexed: 05/10/2023]
Abstract
ABSTRACT The current global death rate has threatened humans due to increase in deadly unknown infections caused by pathogenic microorganisms. On the contrary, the emergence of multidrug-resistant bacteria is also increasing which is leading to elevated lethality rate worldwide. Development of drug-resistant bacteria has become one of the daunting global challenges due to failure in approaching to combat against them. Methicillin-resistant Staphylococcus aureus (MRSA) is one of those drug-resistant bacteria which has led to increase in global mortality rate causing various lethal infections. Polymer synthesis can be one of the significant approaches to combat MRSA by fabricating polymeric coatings to prevent the spread of infections. This review provides last decade information in the development of various polymers against MRSA. GRAPHICAL ABSTRACT
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Affiliation(s)
- Shreya Kanth
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104 India
| | - Akshatha Nagaraja
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104 India
| | - Yashoda Malgar Puttaiahgowda
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104 India
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14
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Zhang S, Lu X, Wang B, Zhang G, Liu M, Geng S, Sun L, An J, Zhang Z, Zhang H. A soft anti-virulence liposome realizing the explosive release of antibiotics at an infectious site to improve antimicrobial therapy. J Mater Chem B 2021; 9:147-158. [PMID: 33226396 DOI: 10.1039/d0tb02255a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pore-forming toxins (PFTs), the most common virulence proteins, are promising therapeutic keys in bacterial infections. CAL02, consisting of sphingomyelin (Sm) and containing a maximum ratio of cholesterol (Ch), has been applied to sequester PFTs. However, Sm, a saturated phospholipid, leads to structural rigidity of the liposome, which does not benefit PFT combination. Therefore, in order to decrease the membrane rigidity and improve the fluidity of liposomes, we have introduced an unsaturated phospholipid, phosphatidylcholine (Pc), to the saturated Sm. In this report, a soft nanoliposome (called CSPL), composed of Ch, Sm and Pc, was artificially prepared. In order to further improve its antibacterial effect, vancomycin (Van) was loaded into the hydrophilic core of CSPL, where Van can be released radically at the infectious site through transmembrane pores formed by the PFTs in CSPL. This soft Van@CSPL nanoliposome with detoxification/drug release was able to inhibit the possibility of antibiotic resistance and could play a better role in treating severe invasive infections in mice.
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Affiliation(s)
- Shudong Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, No. 100, Kexue Avenue, Zhengzhou 450001, China.
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15
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Qian Y, Deng S, Lu Z, She Y, Xie J, Cong Z, Zhang W, Liu R. Using In Vivo Assessment on Host Defense Peptide Mimicking Polymer-Modified Surfaces for Combating Implant Infections. ACS APPLIED BIO MATERIALS 2020; 4:3811-3829. [DOI: 10.1021/acsabm.0c01066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yuxin Qian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shuai Deng
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ziyi Lu
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yunrui She
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiayang Xie
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zihao Cong
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenjing Zhang
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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16
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A novel antimicrobial polymer efficiently treats multidrug-resistant MRSA-induced bloodstream infection. Biosci Rep 2020; 39:BSR20192354. [PMID: 31548363 PMCID: PMC6822508 DOI: 10.1042/bsr20192354] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/11/2019] [Accepted: 09/18/2019] [Indexed: 11/17/2022] Open
Abstract
The present study aimed to ascertain if polymer 2a, a novel synthesized antimicrobial polyionene, could treat methicillin-resistant Staphylococcus aureus (MRSA)-induced bloodstream infection. The minimum inhibitory concentration (MIC) of polymer 2a against MRSA was detected. A time-kill assay was employed to determine the killing kinetic of polymer 2a. Potential antimicrobial mechanisms of polymer 2a, including membrane disruption and programmed cell death (PCD), were explored. A resistance development assay was introduced to determine the propensity of polymer 2a toward resistance against MRSA. A mouse model of MRSA bacteremia was established to assess in vivo efficacy of polymer 2a. Furthermore, in vivo toxicity of polymer 2a was also evaluated through injection by tail vein. Polymer 2a exhibited more superior antimicrobial activity and faster killing kinetic than the control antibiotics against clinically isolated MRSA strains. Polymer 2a resulted in an obvious leakage of cellular components (concentration more than 1× MIC). mRNA expression of PCD pathway-related gene (recA) was significantly up-regulated in the presence of polymer 2a with low concentration (concentration less than 1× MIC). Repeated use of polymer 2a did not lead to drug resistance. In a MRSA-induced bloodstream infection mouse model, polymer 2a displayed superior therapeutic efficacy with negligible systemic toxicity. Moreover, polymer 2a treatment by tail vein could evidently reduce MRSA counts in blood and major organs and markedly improve living conditions. In conclusion, all these findings presented in this work convincingly suggested that polymer 2a may be a promising therapeutic alternative for treating MRSA-induced infections, especially bloodstream infection.
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17
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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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18
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Tan J, Tay J, Hedrick J, Yang YY. Synthetic macromolecules as therapeutics that overcome resistance in cancer and microbial infection. Biomaterials 2020; 252:120078. [PMID: 32417653 DOI: 10.1016/j.biomaterials.2020.120078] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023]
Abstract
Synthetic macromolecular antimicrobials have shown efficacy in the treatment of multidrug resistant (MDR) pathogens. These synthetic macromolecules, inspired by Nature's antimicrobial peptides (AMPs), mitigate resistance by disrupting microbial cell membrane or targeting multiple intracellular proteins or genes. Unlike AMPs, these polymers are less prone to degradation by proteases and are easier to synthesize on a large scale. Recently, various studies have revealed that cancer cell membrane, like that of microbes, is negatively charged, and AMPs can be used as anticancer agents. Nevertheless, efforts in developing polymers as anticancer agents has remained limited. This review highlights the recent advancement in the development of synthetic biodegradable antimicrobial polymers (e.g. polycarbonates, polyesters and polypeptides) and anticancer macromolecules including peptides and polymers. Additionally, strategies to improve their in vivo bioavailability and selectivity towards bacteria and cancer cells are examined. Lastly, future perspectives, including use of artificial intelligence or machine learning, in the development of antimicrobial and anticancer macromolecules are discussed.
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Affiliation(s)
- Jason Tan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Joyce Tay
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - James Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, CA, 95120, United States
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore.
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19
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Wang X, Hadjichristidis N. Poly(amine-co-ester)s by Binary Organocatalytic Ring-Opening Polymerization of N-Boc-1,4-oxazepan-7-one: Synthesis, Characterization, and Self-Assembly. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b02084] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xin Wang
- Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Nikos Hadjichristidis
- Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
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20
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Lu C, Quan G, Su M, Nimmagadda A, Chen W, Pan M, Teng P, Yu F, Liu X, Jiang L, Du W, Hu W, Yao F, Pan X, Wu C, Liu D, Cai J. Molecular Architecture and Charging Effects Enhance the In Vitro and In Vivo Performance of Multi‐Arm Antimicrobial Agents Based on Star‐Shaped Poly(
l
‐lysine). ADVANCED THERAPEUTICS 2019; 2:1900147. [DOI: 10.1002/adtp.201900147] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Chao Lu
- Shantou University Medical College Shantou Guangdong 515041 China
- Department of Chemistry, University of South Florida Tampa FL 33620 USA
- Department of Pharmaceutics, School of Pharmaceutical Sciences Sun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Guilan Quan
- Department of Pharmaceutics, School of Pharmaceutical Sciences Sun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Ma Su
- Department of Chemistry, University of South Florida Tampa FL 33620 USA
| | | | - Weidong Chen
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Miao Pan
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Peng Teng
- Department of Chemistry, University of South Florida Tampa FL 33620 USA
| | - Feiyuan Yu
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Xi Liu
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Ling Jiang
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Wenyi Du
- Chengdu FenDi Technology Co., Ltd. Chengdu 610093 China
| | - Wei Hu
- Chengdu FenDi Technology Co., Ltd. Chengdu 610093 China
| | - Fen Yao
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Xin Pan
- Department of Pharmaceutics, School of Pharmaceutical Sciences Sun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Chuanbin Wu
- Department of Pharmaceutics, School of Pharmaceutical Sciences Sun Yat‐Sen University Guangzhou Guangdong 510006 China
| | - Daojun Liu
- Shantou University Medical College Shantou Guangdong 515041 China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida Tampa FL 33620 USA
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21
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Tan JPK, Tan J, Park N, Xu K, Chan ED, Yang C, Piunova VA, Ji Z, Lim A, Shao J, Bai A, Bai X, Mantione D, Sardon H, Yang YY, Hedrick JL. Upcycling Poly(ethylene terephthalate) Refuse to Advanced Therapeutics for the Treatment of Nosocomial and Mycobacterial Infections. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01333] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jeremy P. K. Tan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Jason Tan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Nathanial Park
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
| | - Kaijin Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Edward D. Chan
- National Jewish Health, D509, 1400 Jackson St., Denver, Colorado 80206, United States
| | - Chuan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Victoria A. Piunova
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
| | - Zhongkang Ji
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Alexandra Lim
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Jundan Shao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
| | - An Bai
- National Jewish Health, D509, 1400 Jackson St., Denver, Colorado 80206, United States
| | - Xiyuan Bai
- National Jewish Health, D509, 1400 Jackson St., Denver, Colorado 80206, United States
| | - Daniele Mantione
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 7, 20018 Donostia-San Sebastian, Spain
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa 7, 20018 Donostia-San Sebastian, Spain
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - James L. Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
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22
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Yang C, Lou W, Zhong G, Lee A, Leong J, Chin W, Ding B, Bao C, Tan JP, Pu Q, Gao S, Xu L, Hsu LY, Wu M, Hedrick JL, Fan W, Yang YY. Degradable antimicrobial polycarbonates with unexpected activity and selectivity for treating multidrug-resistant Klebsiella pneumoniae lung infection in mice. Acta Biomater 2019; 94:268-280. [PMID: 31129359 DOI: 10.1016/j.actbio.2019.05.057] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 01/10/2023]
Abstract
Multidrug resistant (MDR) Klebsiella pneumoniae is a major cause of healthcare-associated infections around the world, with attendant high rates of morbidity and mortality. Progressive reduction in potency of antibiotics capable of treating MDR K. pneumoniae infections - including lung infection - as a consequence of escalating drug resistance provides the motivation to develop drug candidates targeting MDR K. pneumoniae. We recently reported degradable broad-spectrum antimicrobial guanidinium-functionalized polycarbonates with unique antimicrobial mechanism - membrane translocation followed by precipitation of cytosolic materials. These polymers exhibited high potency against bacteria with negligible toxicity. The polymer with ethyl spacer between the quanidinium group and the polymer backbone (pEt_20) showed excellent in vivo efficacy for treating MDR K. pneumoniae-caused peritonitis in mice. In this study, the structures of the polymers were optimized for the treatment of MDR Klebsiella pneumoniae lung infection. Specifically, in vitro antimicrobial activity and selectivity of guanidinium-functionalized polycarbonates containing the same number of guanidinium groups but of a shorter chain length and a structural analogue containing a thiouronium moiety as the pendent cationic group were evaluated. The polymers with optimal compositions and varying hydrophobicity were assessed against 25 clinically isolated K. pneumonia strains for antimicrobial activity and killing kinetics. The results showed that the polymers killed the bacteria more efficiently than clinically used antibiotics, and repeated use of the polymers did not cause drug resistance in K. pneumonia. Particularly, the polymer with butyl spacer (pBut_20) self-assembled into micelles at high concentrations, where the hydrophobic component was shielded in the micellar core, preventing interacting with mammalian cells. A subtle change in the hydrophobicity increased the antimicrobial activity while reducing in vivo toxicity. The in vivo efficacy studies showed that pBut_20 alleviated K. pneumonia lung infection without inducing damage to major organs. Taken together, pBut_20 is promising for treating MDR Klebsiella pneumoniae lung infection in vivo. STATEMENT OF SIGNIFICANCE: Multidrug resistant (MDR) Klebsiella pneumoniae is a major cause of healthcare-associated infections, with attendant high rates of morbidity and mortality. The progressive reduction in antibiotics capable of treating MDR K. pneumoniae infections - including lung infection - as a consequence of escalating drug resistance rates provides the motivation to develop drug candidates. In this study, we report a degradable guanidinium-functionalized polycarbonate with unexpected antimicrobial activity and selectivity towards MDR Klebsiella pneumoniae. A subtle change in polymer hydrophobicity increases antimicrobial activity while reducing in vivo toxicity due to self-assembly at high concentrations. The polymer with optimal composition alleviates Klebsiella pneumonia lung infection without inducing damage to major organs. The polymer is promising for treating MDR Klebsiella pneumoniae lung infection in vivo.
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Long N, Tang H, Lin L, Li J, Guo L, Sun F, Dai M. Effects of infection of MRSA on the expression and activity of renal cytochrome P450s in mice. J Toxicol Sci 2019; 44:299-307. [PMID: 30944282 DOI: 10.2131/jts.44.299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) leads to serious infections, but it is not known whether it changes the expression of kidney drug metabolizing enzymes during infection. The mice were infected with different doses of MRSA and the oxidative stress and inflammation levels in the kidney were examined. The mRNA expression and activity of cytochrome P450 enzyme was analysed. Mice infected with high levels of MRSA showed a decrease in renal antioxidant capability and an elevated level of oxidative metabolites, which was accompanied by the release of inflammatory cytokines. The levels of interleukin 1β, tumour necrosis factor alpha, and macrophage inflammatory protein-1α were significantly increased along with the levels of nitric oxide and malondialdehyde. On day 7, mRNA expression of Cyp1a2, 2d22, and 3a11 were decreased by the high level of MRSA, but the low level of MRSA increased their expressions. Cyp2e1 mRNA expression was increased by MRSA in the kidney of mice. High dose of MRSA infection increased the oxidative stress and inflammatory response in mouse kidney, leading to the decrease in the expression of renal drug-metabolizing enzymes and no recovery within 7 days.
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Affiliation(s)
- Nana Long
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Huaqiao Tang
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Lin Lin
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Jianlong Li
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Lijuan Guo
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Fenghui Sun
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
| | - Min Dai
- School of Laboratory Medicine, Chengdu Medical College, China.,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, China
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24
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Ding X, Wang A, Tong W, Xu FJ. Biodegradable Antibacterial Polymeric Nanosystems: A New Hope to Cope with Multidrug-Resistant Bacteria. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900999. [PMID: 30957927 DOI: 10.1002/smll.201900999] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 03/19/2019] [Indexed: 05/14/2023]
Abstract
The human society is faced with daunting threats from bacterial infections. Over decades, a variety of antibacterial polymeric nanosystems have exhibited great promise for the eradication of multidrug-resistant bacteria and persistent biofilms by enhancing bacterial recognition and binding capabilities. In this Review, the "state-of-the-art" biodegradable antibacterial polymeric nanosystems, which could respond to bacteria environments (e.g., acidity or bacterial enzymes) for controlled antibiotic release or multimodal antibacterial treatment, are summarized. The current antibacterial polymeric nanosystems can be categorized into antibiotic-containing and intrinsic antibacterial nanosystems. The antibiotic-containing polymeric nanosystems include antibiotic-encapsulated nanocarriers (e.g., polymeric micelles, vesicles, nanogels) and antibiotic-conjugated polymer nanosystems for the delivery of antibiotic drugs. On the other hand, the intrinsic antibacterial polymer nanosystems containing bactericidal moieties such as quaternary ammonium groups, phosphonium groups, polycations, antimicrobial peptides (AMPs), and their synthetic mimics, are also described. The biodegradability of the nanosystems can be rendered by the incorporation of labile chemical linkages, such as carbonate, ester, amide, and phosphoester bonds. The design and synthesis of the degradable polymeric building blocks and their fabrications into nanosystems are also explicated, together with their plausible action mechanisms and potential biomedical applications. The perspectives of the current research in this field are also described.
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Affiliation(s)
- Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Anzhi Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wei Tong
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Lab of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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25
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Polymers with distinctive anticancer mechanism that kills MDR cancer cells and inhibits tumor metastasis. Biomaterials 2019; 199:76-87. [DOI: 10.1016/j.biomaterials.2019.01.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 01/05/2023]
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26
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Peng C, Vishwakarma A, Mankoci S, Barton HA, Joy A. Structure–Activity Study of Antibacterial Poly(ester urethane)s with Uniform Distribution of Hydrophobic and Cationic Groups. Biomacromolecules 2019; 20:1675-1682. [DOI: 10.1021/acs.biomac.9b00029] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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27
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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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28
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Dai Y, Zhang X. Cationic polycarbonates via ring-opening polymerization: design, synthesis, and applications. Polym Chem 2019. [DOI: 10.1039/c8py01365a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthetic methods and applications of cationic polycarbonates via ring-opening polymerization are highlighted.
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Affiliation(s)
- Yu Dai
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Xiaojin Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
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29
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Zhu DY, Landis RF, Li CH, Gupta A, Wang LS, Geng Y, Gopalakrishnan S, Guo JW, Rotello VM. Dynamically crosslinked polymer nanocomposites to treat multidrug-resistant bacterial biofilms. NANOSCALE 2018; 10:18651-18656. [PMID: 30264837 PMCID: PMC6190609 DOI: 10.1039/c8nr06348f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Multidrug-resistant biofilms are highly resistant to current antimicrobial therapies. We have developed an antimicrobial platform that integrates the bacteria-killing phytochemical carvacrol into dynamically crosslinked polymer nanocomposites (DCPNs). Taking advantage of a reversibly crosslinked Schiff-base scaffold throughout the engineered emulsions, DCPNs exhibited long-term shelf-life and good stability in serum, while readily disassembling in acidic microenvironments. Furthermore, we demonstrated that DCPNs efficiently penetrate the biofilm matrix, eradicating both Gram-negative/positive bacteria enclosed within. Moreover, DCPNs showed no observable toxicity to fibroblast mammalian cells with the same antimicrobial concentrations necessary to eradicate MDR biofilms. Given their potent antimicrobial and stimuli-responsive dissociation characteristics in a biofilm setting, DCPNs are a suitable therapeutic platform for combating MDR bacterial infections.
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Affiliation(s)
- Dong Yu Zhu
- School of Chemical Engineering and Light industry, Guangdong University of Technology, 100 Wai Huan Xi Road, Guangzhou, Guangdong, 510006, China
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Ryan F. Landis
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Cheng-Hsuan Li
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Akash Gupta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Li-Sheng Wang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Yingying Geng
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Sanjana Gopalakrishnan
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
| | - Jian Wei Guo
- School of Chemical Engineering and Light industry, Guangdong University of Technology, 100 Wai Huan Xi Road, Guangzhou, Guangdong, 510006, China
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts, 01003, United States. ;
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30
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Cao B, Xiao F, Xing D, Hu X. Polyprodrug Antimicrobials: Remarkable Membrane Damage and Concurrent Drug Release to Combat Antibiotic Resistance of Methicillin-Resistant Staphylococcus aureus. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802008. [PMID: 30118562 DOI: 10.1002/smll.201802008] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/28/2018] [Indexed: 05/14/2023]
Abstract
The increased threat of antibiotic resistance has created an urgent need for new strategies. Herein, polyprodrug antimicrobials are proposed to mimic antimicrobial peptides appended with a concurrent drug release property, exhibiting broad-spectrum antibacterial activity and especially high potency to inhibit methicillin-resistant Staphylococcus aureus (MRSA) without inducing resistance. Two series of polyprodrug antimicrobials are fabricated by facile polymerization of triclosan prodrug monomer (TMA) and subsequent quaternization of hydrophilic poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA), affording PDMAEMA-b-PTMA and PQDMA-b-PTMA, respectively. Optimized samples with proper hydrophobic ratio are screened out, which exhibit remarkable bacterial inhibition and low hemolysis toward red blood cells. Furthermore, synergistic antibacterial mechanisms contribute to the bacteria killing, including serious membrane damage, increased out-diffusion of cytosolic milieu across the membrane, and intracellular reductive milieu-mediated triclosan release. No detectable resistance is observed for polyprodrug antimicrobials against MRSA, which is demonstrated to be better than commercial triclosan and vancomycin against in vivo MRSA-infected burn models and a promising approach to the hurdle of antibiotic resistance in biomedicine.
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Affiliation(s)
- Bing Cao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou, 510631, China
- College of Biophotonics, South China Normal University, Guangzhou, 510631, China
| | - Fengfeng Xiao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou, 510631, China
- College of Biophotonics, South China Normal University, Guangzhou, 510631, China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou, 510631, China
- College of Biophotonics, South China Normal University, Guangzhou, 510631, China
| | - Xianglong Hu
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou, 510631, China
- College of Biophotonics, South China Normal University, Guangzhou, 510631, China
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31
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Lou W, Venkataraman S, Zhong G, Ding B, Tan JP, Xu L, Fan W, Yang YY. Antimicrobial polymers as therapeutics for treatment of multidrug-resistant Klebsiella pneumoniae lung infection. Acta Biomater 2018; 78:78-88. [PMID: 30031912 DOI: 10.1016/j.actbio.2018.07.038] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 06/26/2018] [Accepted: 07/17/2018] [Indexed: 12/21/2022]
Abstract
Klebsiella pneumoniae (K. pneumoniae) is one of the most common pathogens in hospital-acquired infections. It is often resistant to multiple antibiotics (including carbapenems), and can cause severe pneumonia. In search of effective antimicrobials, we recently developed polyionenes that were demonstrated to be potent against a broad-spectrum of microbes in vitro. In this study, polyionenes containing rigid amide bonds were synthesized to treat multidrug-resistant (MDR) K. pneumoniae lung infection. The polyionene exhibited broad-spectrum activity against clinically-isolated MDR bacteria with low minimum inhibitory concentrations (MICs). It also demonstrated stronger antimicrobial activity against 20 clinical strains of K. pneumoniae and more rapid killing kinetics than imipenem and other commonly used antibiotics. Multiple treatments with imipenem and gentamycin led to drug resistance in K. pneumoniae, while repeated use of the polymer did not cause resistance development due to its membrane-disruption antimicrobial mechanism. Additionally, the polymer showed potent anti-biofilm activity. In a MDR K. pneumoniae lung infection mouse model, the polymer demonstrated lower effective dose than imipenem with negligible systemic toxicity. The polymer treatment significantly alleviated lung injury, markedly reduced K. pneumoniae counts in the blood and major organs, and decreased mortality. Given its potent in vivo antimicrobial activity, negligible toxicity and ability of mitigating resistance development, the polyionene may be used to treat MDR K. pneumoniae lung infection. STATEMENT OF SIGNIFICANCE Klebsiella pneumoniae (K. pneumoniae) is one of the most common pathogens in hospital-acquired infections, is often resistant to multiple antibiotics including carbapenems and can cause severe pneumonia. In this study, we report synthesis of antimicrobial polymers (polyionenes) and their use as antimicrobial agents for treatment of K. pneumoniae-caused pneumonia. The polymers have broad spectrum antibacterial activity against clinically isolated MDR bacteria, and eliminate MDR K. pneumoniae more effectively and rapidly than clinically used antibiotics. The polymer treatment also provides higher survival rate and faster bacterial removal from the major organs and the blood than the antibiotics. Repeated use of the polymer does not lead to resistance development. More importantly, at the therapeutic dose, the polymer treatment does not cause acute toxicity. Given its in vivo efficacy and negligible toxicity, the polymer is a promising candidate for the treatment of MDR K. pneumoniae-caused pneumonia.
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32
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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: 174] [Impact Index Per Article: 29.0] [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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33
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Cai K, Ying H, Cheng J. Dynamic Ureas with Fast and pH-Independent Hydrolytic Kinetics. Chemistry 2018; 24:7345-7348. [PMID: 29624762 DOI: 10.1002/chem.201801138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/29/2018] [Indexed: 12/13/2022]
Abstract
Low cost, high performance hydrolysable polymers are of great importance in biomedical applications and materials industries. While many applications require materials to have a degradation profile insensitive to external pH to achieve consistent release profiles under varying conditions, hydrolysable chemistry techniques developed so far have pH-dependent hydrolytic kinetics. This work reports the design and synthesis of a new type of hydrolysable polymer that has identical hydrolysis kinetics from pH 3 to 11. The unprecedented pH independent hydrolytic kinetics of the aryl ureas were shown to be related to the dynamic bond dissociation controlled hydrolysis mechanism; the resulting hindered poly(aryl urea) can be degraded with a hydrolysis half-life of 10 min in solution. More importantly, these fast degradable hindered aromatic polyureas can be easily prepared by addition polymerization from commercially available monomers and are resistant to hydrolysis in solid form for months under ambient storage conditions. The combined features of good stability in solid state and fast hydrolysis at various pH values is unprecedented in polyurea material, and will have implications for materials design and applications, such as sacrificial coatings and biomaterials.
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Affiliation(s)
- Kaimin Cai
- Department of Materials Science and Engineering, 1304 W. Green St., Urbana, IL 61801, USA
| | - Hanze Ying
- Department of Materials Science and Engineering, 1304 W. Green St., Urbana, IL 61801, USA
| | - Jianjun Cheng
- Department of Materials Science and Engineering, 1304 W. Green St., Urbana, IL 61801, USA.,Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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34
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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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35
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Lin B, Waymouth RM. Organic Ring-Opening Polymerization Catalysts: Reactivity Control by Balancing Acidity. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00540] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Binhong Lin
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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36
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Leong J, Teo JY, Aakalu VK, Yang YY, Kong H. Engineering Polymersomes for Diagnostics and Therapy. Adv Healthc Mater 2018; 7:e1701276. [PMID: 29334183 PMCID: PMC6377267 DOI: 10.1002/adhm.201701276] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 11/30/2017] [Indexed: 12/20/2022]
Abstract
Engineered polymer vesicles, termed as polymersomes, confer a flexibility to control their structure, properties, and functionality. Self-assembly of amphiphilic copolymers leads to vesicles consisting of a hydrophobic bilayer membrane and hydrophilic core, each of which is loaded with a wide array of small and large molecules of interests. As such, polymersomes are increasingly being studied as carriers of imaging probes and therapeutic drugs. Effective delivery of polymersomes necessitates careful design of polymersomes. Therefore, this review article discusses the design strategies of polymersomes developed for enhanced transport and efficacy of imaging probes and therapeutic drugs. In particular, the article focuses on overviewing technologies to regulate the size, structure, shape, surface activity, and stimuli- responsiveness of polymersomes and discussing the extent to which these properties and structure of polymersomes influence the efficacy of cargo molecules. Taken together with future considerations, this article will serve to improve the controllability of polymersome functions and accelerate the use of polymersomes in biomedical applications.
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Affiliation(s)
- Jiayu Leong
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA, Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Jye Yng Teo
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA, Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Vinay K. Aakalu
- Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Department of Ophthalmology and Visual Sciences, Chicago, IL 60612, USA
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Hyunjoon Kong
- Department of Chemical and Biomolecular Engineering, Department of Bioengineering, Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA,
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37
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Chin W, Zhong G, Pu Q, Yang C, Lou W, De Sessions PF, Periaswamy B, Lee A, Liang ZC, Ding X, Gao S, Chu CW, Bianco S, Bao C, Tong YW, Fan W, Wu M, Hedrick JL, Yang YY. A macromolecular approach to eradicate multidrug resistant bacterial infections while mitigating drug resistance onset. Nat Commun 2018; 9:917. [PMID: 29500445 PMCID: PMC5834525 DOI: 10.1038/s41467-018-03325-6] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 02/06/2018] [Indexed: 11/09/2022] Open
Abstract
Polymyxins remain the last line treatment for multidrug-resistant (MDR) infections. As polymyxins resistance emerges, there is an urgent need to develop effective antimicrobial agents capable of mitigating MDR. Here, we report biodegradable guanidinium-functionalized polycarbonates with a distinctive mechanism that does not induce drug resistance. Unlike conventional antibiotics, repeated use of the polymers does not lead to drug resistance. Transcriptomic analysis of bacteria further supports development of resistance to antibiotics but not to the macromolecules after 30 treatments. Importantly, high in vivo treatment efficacy of the macromolecules is achieved in MDR A. baumannii-, E. coli-, K. pneumoniae-, methicillin-resistant S. aureus-, cecal ligation and puncture-induced polymicrobial peritonitis, and P. aeruginosa lung infection mouse models while remaining non-toxic (e.g., therapeutic index—ED50/LD50: 1473 for A. baumannii infection). These biodegradable synthetic macromolecules have been demonstrated to have broad spectrum in vivo antimicrobial activity, and have excellent potential as systemic antimicrobials against MDR infections. Antibiotic resistance is a major threat across the whole healthcare spectrum. Here, the authors report on the development of biodegradable guanidinium functionalized polycarbonates and demonstrate antimicrobial activity against drug resistant infections.
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Affiliation(s)
- Willy Chin
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore.,NUS Graduate School for Integrative Sciences and Engineering (NGS), 28 Medical Drive, Singapore, 117456, Singapore
| | - Guansheng Zhong
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Qinqin Pu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58203, USA
| | - Chuan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore
| | - Weiyang Lou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | | | | | - Ashlynn Lee
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore
| | - Zhen Chang Liang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore
| | - Xin Ding
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore
| | - Shujun Gao
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore
| | - Collins Wenhan Chu
- Genome Institute of Singapore, 60 Biopolis Street, Genome, Singapore, 138672, Singapore
| | - Simone Bianco
- IBM Almaden Research Center, 650 Harry Road, San Jose, CA, 95120, USA
| | - Chang Bao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Yen Wah Tong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117576, Singapore
| | - Weimin Fan
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58203, USA.
| | - James L Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, CA, 95120, USA.
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore, 138669, Singapore.
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38
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Ergene C, Yasuhara K, Palermo EF. Biomimetic antimicrobial polymers: recent advances in molecular design. Polym Chem 2018. [DOI: 10.1039/c8py00012c] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The increasing prevalence of antibiotic-resistant bacterial infections, coupled with the decline in the number of new antibiotic drug approvals, has created a therapeutic gap that portends an emergent public health crisis.
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Affiliation(s)
- Cansu Ergene
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Kazuma Yasuhara
- Graduate School of Materials Science
- Nara Institute for Science and Technology
- Ikoma
- Japan
| | - Edmund F. Palermo
- Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
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39
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Liu P, Xu G, Pranantyo D, Xu LQ, Neoh KG, Kang ET. pH-Sensitive Zwitterionic Polymer as an Antimicrobial Agent with Effective Bacterial Targeting. ACS Biomater Sci Eng 2017; 4:40-46. [DOI: 10.1021/acsbiomaterials.7b00723] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Peng Liu
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Gang Xu
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Dicky Pranantyo
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Li Qun Xu
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - Koon-Gee Neoh
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
| | - En-Tang Kang
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, Kent Ridge, Singapore 119260
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40
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Tan JPK, Coady DJ, Sardon H, Yuen A, Gao S, Lim SW, Liang ZC, Tan EW, Venkataraman S, Engler AC, Fevre M, Ono R, Yang YY, Hedrick JL. Broad Spectrum Macromolecular Antimicrobials with Biofilm Disruption Capability and In Vivo Efficacy. Adv Healthc Mater 2017; 6. [PMID: 28504348 DOI: 10.1002/adhm.201601420] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/24/2017] [Indexed: 12/28/2022]
Abstract
In this study, antimicrobial polymers are synthesized by the organocatalytic ring-opening polymerization of an eight-membered heterocyclic carbonate monomer that is subsequently quaternized with methyl iodide. These polymers demonstrate activity against clinically relevant Gram-positive Staphylococcus epidermidis and Staphylococcus aureus, Gram-negative Escherichia coli and Pseudomonas aeruginosa, and fungus Candida albicans with fast killing kinetics. Importantly, the polymer efficiently inhibits biofilm growth and lyses existing biofilm, leading to a reduction in biomass and cell viability. In addition, the macromolecular antimicrobial is less likely to induce resistance as it acts via a membrane-lytic mechanism. The polymer is not cytotoxic toward mammalian cells with LD50 of 99.0 ± 11.6 mg kg-1 in mice through i.v. injection. In an S. aureus blood stream infection mouse model, the polymer removes bacteria from the blood more rapidly than the antibiotic Augmentin. At the effective dose, the polymer treatment does not damage liver and kidney tissues or functions. In addition, blood electrolyte balance remains unchanged after the treatment. The low cost of starting materials, ease of synthesis, nontoxicity, broad spectrum activity with fast killing kinetics, and in vivo antimicrobial activity make these macromolecular antimicrobials ideal candidates for prevention of sepsis and treatment of infections.
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Affiliation(s)
- Jeremy P. K. Tan
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Daniel J. Coady
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
| | - Haritz Sardon
- POLYMAT; University of the Basque Country UPV/EHU Joxe Mari Korta Center; Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
- Ikerbasque, Basque Foundation for Science; E-48011 Bilbao Spain
| | - Alexander Yuen
- POLYMAT; University of the Basque Country UPV/EHU Joxe Mari Korta Center; Avda. Tolosa 72 20018 Donostia-San Sebastián Spain
| | - Shujun Gao
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Shaun W. Lim
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Zhen Chang Liang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Eddy W. Tan
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Shrinivas Venkataraman
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - Amanda C. Engler
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
| | - Mareva Fevre
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
| | - Robert Ono
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way Singapore 138669 Singapore
| | - James L. Hedrick
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
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41
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Keum H, Kim JY, Yu B, Yu SJ, Kim J, Jeon H, Lee DY, Im SG, Jon S. Prevention of Bacterial Colonization on Catheters by a One-Step Coating Process Involving an Antibiofouling Polymer in Water. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19736-19745. [PMID: 28569502 DOI: 10.1021/acsami.7b06899] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
As reports of multidrug resistant pathogens have increased, patients with implanted medical catheters increasingly need alternative solutions to antibiotic treatments. As most catheter-related infections are directly associated with biofilm formation on the catheter surface, which, once formed, is difficult to eliminate, a promising approach to biofilm prevention involves inhibiting the initial adhesion of bacteria to the surface. In this study, we report an amphiphilic, antifouling polymer, poly(DMA-mPEGMA-AA) that can facilely coat the surfaces of commercially available catheter materials in water and prevent bacterial adhesion to and subsequent colonization of the surface, giving rise to an antibiofilm surface. The antifouling coating layer was formed simply by dipping a model substrate (polystyrene, PET, PDMS, or silicon-based urinary catheter) in water containing poly(DMA-mPEGMA-AA), followed by characterization by X-ray photoelectron spectroscopy (XPS). The antibacterial adhesion properties of the polymer-coated surface were assessed for Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) growth under static (incubation in the presence of a bacterial suspension) and dynamic (bacteria suspended in a solution under flow) conditions. Regardless of the conditions, the polymer-coated surface displayed significantly reduced attachment of the bacteria (antiadhesion effect > ∼8-fold) compared to the bare noncoated substrates. Treatment of the implanted catheters with S. aureus in vivo further confirmed that the polymer-coated silicon urinary catheters could significantly reduce bacterial adhesion and biofilm formation in a bacterial infection animal model. Furthermore, the polymer-coated catheters did not induce hemolysis and were resistant to the adhesion of blood-circulating cells, indicative of high biocompatibility. Collectively, the present amphiphilic antifouling polymer is potentially useful as a coating platform that renders existing medical devices resistant to biofilm formation.
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Affiliation(s)
- Hyeongseop Keum
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Jin Yong Kim
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Byeongjun Yu
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Seung Jung Yu
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Jinjoo Kim
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Hyungsu Jeon
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Dong Yun Lee
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Sung Gap Im
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Sangyong Jon
- KAIST Institute for the BioCentury, Department of Biological Sciences, ‡Graduate School of Medical Science and Engineering, and §KAIST Institute for the NanoCentury, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Daejeon 34141, Republic of Korea
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42
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Zhong G, Cheng J, Liang ZC, Xu L, Lou W, Bao C, Ong ZY, Dong H, Yang YY, Fan W. Short Synthetic β-Sheet Antimicrobial Peptides for the Treatment of Multidrug-Resistant Pseudomonas aeruginosa Burn Wound Infections. Adv Healthc Mater 2017; 6. [PMID: 28135045 DOI: 10.1002/adhm.201601134] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/12/2016] [Indexed: 12/28/2022]
Abstract
Pseudomonas aeruginosa is often implicated in burn wound infections; its inherent drug resistance often renders these infections extremely challenging to treat. This is further compounded by the problem of emerging drug resistance and the dearth of novel antimicrobial drug discovery in recent years. In the perennial search for effective antimicrobial compounds, the authors identify short synthetic β-sheet folding peptides, IRIKIRIK (IK8L), IRIkIrIK (IK8-2D), and irikirik (IK8D) as prime candidates owing to their high potency against Gram-negative bacteria. In this study, the peptides are first assayed against 20 clinically isolated multidrug-resistant P. aeruginosa strains in comparison with the conventional antibiotics imipenem and ceftazidime, and IK8L is demonstrated to be the most effective. IK8L also exhibits superior antibacterial killing kinetics compared to imipenem and ceftazidime. From transmission electron microscopy, confocal microscopy, and protein release analyses, IK8L shows membrane-lytic antimicrobial mechanism. Repeated use of IK8L does not induce drug resistance, while the bacteria develop resistance against the antibiotics after several times of treatment at sublethal doses. Analysis of mouse blood serum chemistry reveals that peptide does not induce systemic toxicity. The potential utility of IK8L in the in vivo treatment of P. aeruginosa-infected burn wounds is further demonstrated in a mouse model.
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Affiliation(s)
- Guansheng Zhong
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Junchi Cheng
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Zhen Chang Liang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Liang Xu
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Weiyang Lou
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Chang Bao
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Zhan Yuin Ong
- School of Physics and Astronomy and Leeds Institute of Biomedical and Clinical Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Huihui Dong
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Weimin Fan
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
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43
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Saini PK, Fiorani G, Mathers RT, Williams CK. Zinc versus Magnesium: Orthogonal Catalyst Reactivity in Selective Polymerizations of Epoxides, Bio-derived Anhydrides and Carbon Dioxide. Chemistry 2017; 23:4260-4265. [PMID: 28295663 PMCID: PMC5434931 DOI: 10.1002/chem.201605690] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Indexed: 12/30/2022]
Abstract
Developing selective polymerizations from complex monomer mixtures is an important challenge. Here, dinuclear catalysts allow selective polymerization from mixtures of sterically hindered tricyclic anhydrides, carbon dioxide and epoxides to yield well-controlled copoly(ester-carbonates). Surprisingly, two very similar homogeneous catalysts differing only in the central metal, zinc versus magnesium, show very high but diametrically opposite monomer selectivity. The selectivity is attributed to different polymerization kinetics and to steric factors associated with the anhydrides.
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Affiliation(s)
| | - Giulia Fiorani
- Department of ChemistryUniversity of Oxford, Chemical Research Laboratory12 Mansfield RoadOxfordOX1 3TAUK
| | - Robert T. Mathers
- Department of ChemistryThe Pennsylvania State UniversityNew KensingtonPennsylvania15068USA
| | - Charlotte K. Williams
- Department of ChemistryUniversity of Oxford, Chemical Research Laboratory12 Mansfield RoadOxfordOX1 3TAUK
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Su Y, Tian L, Yu M, Gao Q, Wang D, Xi Y, Yang P, Lei B, Ma PX, Li P. Cationic peptidopolysaccharides synthesized by ‘click’ chemistry with enhanced broad-spectrum antimicrobial activities. Polym Chem 2017. [DOI: 10.1039/c7py00528h] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of broad-spectrum antimicrobial cationic peptidopolysaccharides have been synthesized using a facile thiol–ene ‘click’ chemistry.
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45
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Huang Y, Ding X, Qi Y, Yu B, Xu FJ. Reduction-responsive multifunctional hyperbranched polyaminoglycosides with excellent antibacterial activity, biocompatibility and gene transfection capability. Biomaterials 2016; 106:134-43. [DOI: 10.1016/j.biomaterials.2016.08.025] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/08/2016] [Accepted: 08/16/2016] [Indexed: 10/21/2022]
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46
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Self-assembled cationic amphiphiles as antimicrobial peptides mimics: Role of hydrophobicity, linkage type, and assembly state. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 13:343-352. [PMID: 27520722 DOI: 10.1016/j.nano.2016.07.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/19/2016] [Accepted: 07/28/2016] [Indexed: 01/05/2023]
Abstract
Inspired by high promise using naturally occurring antimicrobial peptides (AMPs) to treat infections caused by antimicrobial-resistant bacteria, cationic amphiphiles (CAms) were strategically designed as synthetic mimics to overcome associated limitations, including high manufacture cost and low metabolic stability. CAms with facially amphiphilic conformation were expected to demonstrate membrane-lytic properties and thus reduce tendency of resistance development. By systematically tuning the hydrophobicity, CAms with optimized compositions exhibited potent broad-spectrum antimicrobial activity (with minimum inhibitory concentrations in low μg/mL range) as well as negligible hemolytic activity. Electron microscope images revealed the morphological and ultrastructure changes of bacterial membranes induced by CAm treatment and validated their membrane-disrupting mechanism. Additionally, an all-atom molecular dynamics simulation was employed to understand the CAm-membrane interaction on molecular level. This study shows that these CAms can serve as viable scaffolds for designing next generation of AMP mimics as antimicrobial alternatives to combat drug-resistant pathogens.
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