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Wen Q, He Y, Chi J, Wang L, Ren Y, Niu X, Yang Y, Chen K, Zhu Q, Lin J, Xiang Y, Xie J, Chen W, Yu Y, Wang B, Wang B, Zhang Y, Lu C, Wang K, Teng P, Zhou R. Naturally inspired chimeric quinolone derivatives to reverse bacterial drug resistance. Eur J Med Chem 2025; 289:117496. [PMID: 40088661 DOI: 10.1016/j.ejmech.2025.117496] [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: 02/06/2025] [Revised: 03/05/2025] [Accepted: 03/08/2025] [Indexed: 03/17/2025]
Abstract
Antimicrobial resistance poses an urgent threat to global health, underscoring the critical need for new antibacterial drugs. Ciprofloxacin, a third-generation quinolone antibiotic, is used to treat different types of bacterial infections; however, it often results in the rapid emergence of resistance in clinical settings. Inspired by low susceptibility to antimicrobial resistance of natural antimicrobial peptides, we herein propose a host defense peptide-mimicking strategy for designing chimeric quinolone derivatives which may reduce the likelihood of antibacterial resistance. This strategy involves the incorporation of deliberately designed amphiphilic moieties into ciprofloxacin to mimic the structural characteristics and resistance-evading properties of host defense peptides. A resulting chimeric compound IPMCL-28b, carrying a rigid linker and three cationic amino acids along with a lipophilic acyl n-decanoyl tail, exhibited potent activity against a panel of multidrug-resistant bacterial strains by endowing the ciprofloxacin derivatives with additional ability to disrupt bacterial cell membranes. Molecular dynamics simulations showed that IPMCL-28b demonstrates significantly stronger disruptive interactions with cell membranes than ciprofloxacin. This compound not only demonstrated high selectivity with low hemolysis side effect, but also significantly reduced the likelihood of resistance development compared with ciprofloxacin. Excitingly, IPMCL-28b demonstrated highly enhanced in vivo antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA) with a 99.99 % (4.4 log) reduction in skin bacterial load after a single dose. These findings highlight the potential of host defense peptides-mimicking amphiphilic ciprofloxacin derivatives to reverse antibiotic resistance and mitigate the development of antimicrobial resistance.
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Affiliation(s)
- Qi Wen
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Yuhang He
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Jiaying Chi
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Basic Research Center of Excellence for Natural Bioactive Molecules and Discovery of Innovative Drugs, College of Pharmacy, Jinan University, Guangzhou, 511436, China
| | - Luyao Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yixuan Ren
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Xiaoke Niu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yanqing Yang
- Zhejiang Key Laboratory of Cell and Molecular Intelligent Design and Development, Institute of Quantitative Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Kang Chen
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Qi Zhu
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Juncheng Lin
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Yanghui Xiang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Wenteng Chen
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Yongping Yu
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China
| | - Baohong Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Bo Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Ying Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| | - Chao Lu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Basic Research Center of Excellence for Natural Bioactive Molecules and Discovery of Innovative Drugs, College of Pharmacy, Jinan University, Guangzhou, 511436, China.
| | - Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.
| | - Peng Teng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang, China; National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, Hangzhou, 310058, China.
| | - Ruhong Zhou
- Zhejiang Key Laboratory of Cell and Molecular Intelligent Design and Development, Institute of Quantitative Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China; Shanghai Institute for Advanced Study, Zhejiang University, Shanghai, China; Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China; Department of Chemistry, Columbia University, New York, NY, USA
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Jose A, Chathangad SN, Sivadas P, Barik D, Kannan K, Das SL, Sadhukhan S, Porel M. Dithiocarbamate-Based Sequence-Defined Oligomers as Promising Membrane-Disrupting Antibacterial Agents: Design, Activity, and Mechanism. ACS APPLIED BIO MATERIALS 2025; 8:1547-1558. [PMID: 39882634 DOI: 10.1021/acsabm.4c01732] [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] [Indexed: 01/31/2025]
Abstract
The emerging prevalence of antimicrobial resistance demands cutting-edge therapeutic agents to treat bacterial infections. We present a synthetic strategy to construct sequence-defined oligomers (SDOs) by using dithiocarbamate (DTC). The antibacterial activity of the synthesized library of SDOs was studied using a Gram-positive B. subtilis and a Gram-negative E. coli. Among SDOs, Dec (with C10 aliphatic chain) was found to be the most promising antibacterial agent exhibiting a minimum inhibitory concentration (MIC) of 3 μg/mL against B. subtilis. Structure-activity relationship studies led to a 400-fold improvement in the MIC within the SDO library. The mode of action of the SDOs was elucidated on a model system, where bacterial membranes mimicking giant unilamellar vesicles (GUVs) were exposed to the SDOs. Membrane disruption and pore formation were found to be the key mechanisms through which SDOs act. In addition, scanning electron microscopy (SEM) and confocal laser scanning microscopy analysis of Dec-treated bacteria confirmed the loss of cell membrane integrity. Finally, the hemolysis assay with SDOs revealed their excellent selectivity toward bacterial cells. Taken together, we developed a modular platform for the synthesis of SDOs having promising antibacterial activity and superior selectivity toward bacteria, with the membrane disruption mode of action confirmed via studies on the model GUV system and SEM analysis.
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Affiliation(s)
- Anna Jose
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Shabin N Chathangad
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Physical and Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Palliyil Sivadas
- Physical and Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Department of Physics, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Debashis Barik
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Karthika Kannan
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Physical and Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Sovan Lal Das
- Physical and Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Department of Mechanical Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Physical and Chemical Biology Laboratory, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
| | - Mintu Porel
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
- Environmental Sciences and Sustainable Engineering Centre, Indian Institute of Technology Palakkad, Palakkad, Kerala 678623, India
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Cui W, Liu Y, Yue Y, Wang J, Meng X, Yang Z, Gong C, Yang JL. Novel antibacterial pullulan derivatives modified with quaternary phosphonium salts for infected wound treatments. Int J Biol Macromol 2024; 282:136893. [PMID: 39490496 DOI: 10.1016/j.ijbiomac.2024.136893] [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: 09/13/2024] [Revised: 10/16/2024] [Accepted: 10/23/2024] [Indexed: 11/05/2024]
Abstract
The development of novel antibacterial agents is urgently needed to tackle bacterial infection, the major global issue menacing human health. Among them, polymeric quaternary phosphonium salts are worth noticing owing to their strong antibacterial activities and other merits including low bacterial drug resistance. Herein, pullulan modified with quaternary phosphonium salts (PQP) was synthesized using esterification reactions of pullulan and (5-carboxypentyl)triphenylphosphonium bromide (CPTPPB) mediated by N,N'‑carbonyldiimidazole (CDI), and was evaluated as novel antibacterial agents for treating wound infection for the first time. The chemical structures, chemical bonding, elemental compositions, crystalline properties and thermostability of PQP were systematically investigated. PQP exhibited in vitro antibacterial activities against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), which were unveiled by the spread plate method and possibly resulted from the damage of bacterial cell walls/membranes mediated by electrostatic and hydrophobic interactions according to preliminary mechanism studies. Weak cytotoxicity and excellent hemocompatibility of PQP at the effective bactericidal concentration were observed. Moreover, in the infected wound model of mice, PQP was capable of disinfecting the wound and accelerating the healing. We opine PQP in this work is promising for antibacterial applications and will inspire the synthesis of novel antibacterial agents derived from natural polymers.
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Affiliation(s)
- Wenzhuang Cui
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China; School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yujie Liu
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China
| | - Ying Yue
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences (CAS), Lanzhou 730000, China
| | - Jun Wang
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China
| | - Xianhua Meng
- Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264000, China
| | - Zhizhou Yang
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Chu Gong
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China.
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences (CAS), Lanzhou 730000, China.
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4
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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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5
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Wang L, Liu L, Zhang C, Yu G, Lin W, Duan X, Xiong Y, Jiang G, Wang J, Liao X. Design, synthesis, anti-infective potency and mechanism study of novel Ru-based complexes containing substituted adamantane as antibacterial agents. Eur J Med Chem 2024; 270:116378. [PMID: 38604098 DOI: 10.1016/j.ejmech.2024.116378] [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: 10/06/2023] [Revised: 03/30/2024] [Accepted: 03/31/2024] [Indexed: 04/13/2024]
Abstract
Infections caused by Staphylococcus aureus (S. aureus) are increasing difficult to treat because this pathogen is easily resistant to antibiotics. However, the development of novel antibacterial agents with high antimicrobial activity and low frequency of resistance remains a huge challenge. Here, building on the coupling strategy, an adamantane moiety was linked to the membrane-active Ru-based structure and then developed three novel metalloantibiotics: [Ru(bpy)2(L)](PF6)2 (Ru1) (bpy = 2,2-bipyridine, L = amantadine modified ligand), [Ru(dmb)2(L)](PF6)2 (Ru2) (dmb = 4,4'-dimethyl-2,2'-bipyridine) and [Ru(dpa)2(L)](PF6)2 (Ru3), (dpa = 2,2'-dipyridylamine). Notably, complex Ru1 was identified to be the best candidate agent, showing greater efficacy against S. aureus than most of clinical antibiotics and low resistance frequencies. Mechanism studies demonstrated that Ru1 could not only increase the permeability of bacterial cell membrane and then caused the leakage of bacterial contents, but also promoted the production of reactive oxygen species (ROS) in bacteria. Importantly, complex Ru1 inhibited the biofilm formation, exotoxin secretion and increased the potency of some clinical used antibiotics. In addition, Ru1 showed low toxic in vivo and excellent anti-infective efficacy in two animal infection model. Thus, Ru-based metalloantibiotic bearing adamantane moiety are promising antibacterial agents, providing a certain research basis for the future antibiotics research.
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Affiliation(s)
- Liqiang Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Lianghong Liu
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, 418000, China
| | - Chunyan Zhang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Guangying Yu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Wenjing Lin
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Xuemin Duan
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Yanshi Xiong
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China
| | - Guijuan Jiang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China.
| | - Jintao Wang
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China.
| | - Xiangwen Liao
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science &Technology Normal University, Nanchang, 330013, China.
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Patel A, Goswami S, Hazarika G, Sivaprakasam S, Bhattacharjee S, Manna D. Sulfonium-Cross-Linked Hyaluronic Acid-Based Self-Healing Hydrogel: Stimuli-Responsive Drug Carrier with Inherent Antibacterial Activity to Counteract Antibiotic-Resistant Bacteria. Adv Healthc Mater 2024; 13:e2302790. [PMID: 37909063 DOI: 10.1002/adhm.202302790] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/22/2023] [Indexed: 11/02/2023]
Abstract
Augmentation of the activity of Food and Drug Administration-approved antibiotics by an adjuvant or antibiotic carrier is considered one of the promising strategies to fight against antibiotic-resistant bacteria. This study reports the development of sulfonium-cross-linked hyaluronic acid (HA)-based polymer (HA-SS-HA) as an inherent antimicrobial agent and antibiotic carrier. The HA-SS-HA polymer offers the potential for encapsulating various classes of antibiotics and accomplishing a stimuli-responsive release profile in the presence of hyaluronidase produced by bacterial cells within their extracellular environment. Systematic antibacterial studies reveal that the HA-SS-HA-encapsulated antibiotics (vancomycin, amoxicillin, and tetracycline) restore its activity against the antibiotic-resistant bacterial cells methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE), and Pseudomonas aeruginosa. The HA-SS-HA gel shows robust efficacy in eradicating the mature biofilm of Staphylococcus aureus (S. aureus). The membrane-disrupting activity reveals that HA-SS-HA can also counteract the antibiotic resistance mechanism of the bacterial cells. The in vivo studies reveal excellent wound-healing activity of HA-SS-HA in albino laboratory-bred (BALB/c) mice. The outcome of additional antibacterial studies reveals that antibiotics-encapsulated HA-SS-HA hydrogel can effectively combat Gram-negative, Gram-positive, and antibiotic-resistant bacterial strains. Therefore, revitalizing the activity of commercial antibiotics by HA-SS-HA can be considered a valuable and economically effective strategy to fight against antibiotic-resistant bacteria.
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Affiliation(s)
- Anjali Patel
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Sanghamitra Goswami
- Department of Molecular Biology and Bioinformatics, Tripura University (A Central University), Agartala, Tripura, 799022, India
| | - Gunanka Hazarika
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Senthilkumar Sivaprakasam
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology and Bioinformatics, Tripura University (A Central University), Agartala, Tripura, 799022, India
| | - Debasis Manna
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
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7
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Zhang XM, Zhang M, Xu NN, Zheng SJ, Cheng N. Multifunctional polydopamine/hemin-cyclodextrin reinforced chitosan nanocomposite hydrogel: A synergistic platform for wound healing. Int J Biol Macromol 2024; 260:129553. [PMID: 38246439 DOI: 10.1016/j.ijbiomac.2024.129553] [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: 09/22/2023] [Revised: 12/15/2023] [Accepted: 01/15/2024] [Indexed: 01/23/2024]
Abstract
Chronic cutaneous wounds present a significant challenge for healthcare providers globally, with the risk of bacterial infections emerging as a particularly concerning issue. There is an increasing need to employ a combination of diverse antibacterial strategies to address infections comprehensively in chronic wounds. This study introduces a highly efficient antibacterial platform that encapsulates the NO precursor (BNN6) into β-cyclodextrin-modified hemin-bearing polydopamine nanoparticles called NO/CHPDA. These nanoparticles are seamlessly integrated into a hydrogel composite comprised of L-arginine grafted chitosan (Arg-CS) and oxide dextrans (oDex). The amalgamation of photothermal therapy (PTT), chemodynamic therapy (CDT), and nitric oxide (NO) antibacterial strategies within the NO/CHPDA@Arg-CS/oDex nanocomposite hydrogel demonstrates a synergistic and highly effective capacity to eradicate bacteria and accelerate the wound healing process in vivo. Remarkably, this nanocomposite hydrogel maintains excellent biocompatibility and induces minimal side effects. The resulting nanocomposite hydrogel represents a promising therapeutic solution for treating bacterial infections in wound healing applications.
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Affiliation(s)
- Xu-Mei Zhang
- Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261053, China
| | - Man Zhang
- Department of Pharmacy, the First People's Hospital of Aksu Prefecture, Aksu, Xinjiang 843000, China; College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, China
| | - Ning-Ning Xu
- Department of General Surgery, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Shu-Juan Zheng
- Department of General Surgery, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261053, PR China.
| | - Ni Cheng
- College of Pharmacy, Weifang Medical University, Weifang, Shandong 261053, China.
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8
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Yuan X, Zhou Y, Wang Y, Liu L, Yang G. Fabrication of Schiff-base crosslinked films modified dialdehyde starch with excellent UV-blocking and antibacterial properties for fruit preservation. Carbohydr Polym 2024; 326:121619. [PMID: 38142076 DOI: 10.1016/j.carbpol.2023.121619] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/17/2023] [Accepted: 11/18/2023] [Indexed: 12/25/2023]
Abstract
Starch-based films have received considerable attention, owing to their commendable biocompatible and biodegradable properties; however, their poor ultraviolet (UV)-blocking and antibacterial performances limit their application in fruit preservation. Herein, bio-based bifunctional benzoxazine (Bi-BOZ) compounds with different carbon chain lengths were synthesized, and the influence of chain lengths on the antibacterial effect was explored. Benzoxazine with 1,12-dodecanediamine as the amine source (BOZ-DDA) exhibited excellent antibacterial and antibiofilm activities, with minimum inhibitory concentrations of 21.7 ± 2.2 and 23.3 ± 2.6 μg/mL against Escherichia coli and Staphylococcus aureus, respectively, mainly because the electrostatic attraction and hydrophobic effect of BOZ-DDA, effectively disrupted the bacterial integrity. DS/DDA films with hydrophobic, antibacterial, and UV-resistant abilities were prepared by the Schiff-base reaction between BOZ-DDA and dialdehyde starch (DS). The interactions between the films increased with BOZ-DDA content, enhanced mechanical and barrier properties. DS/DDA films exhibited acid-responsive antibacterial activity attributed to the acid hydrolysis of Schiff bases, released of BOZ-DDA from the films, and the protonation of BOZ-DDA. DS/DDA films exhibited commendable antibacterial and anti-ultraviolet characteristics compared to commercially available films, allowing them to prevent the degradation of mangoes and grapes. As sustainable antibacterial materials, the multifunctional DS/DDA films manifest promising prospects in fruit preservation packaging applications.
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Affiliation(s)
- Xuan Yuan
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Institute of Advanced Marine Materials, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Yijia Zhou
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Institute of Advanced Marine Materials, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Yudan Wang
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Institute of Advanced Marine Materials, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Lijia Liu
- Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Institute of Advanced Marine Materials, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Yantai Research Institute of Harbin Engineering University, Yantai 264006, China
| | - Guoxing Yang
- Daqing Petrochemical Research Center, Petrochemical Research Institute, PetroChina Corporation, Daqing 163000, China.
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9
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Chen Y, Ye Z, Zhen W, Zhang L, Min X, Wang Y, Liu F, Su M. Design and synthesis of broad-spectrum antimicrobial amphiphilic peptidomimetics to combat drug-resistance. Bioorg Chem 2023; 140:106766. [PMID: 37572534 DOI: 10.1016/j.bioorg.2023.106766] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/25/2023] [Accepted: 08/02/2023] [Indexed: 08/14/2023]
Abstract
The gradual depletion of antibiotic discovery pipeline makes the antibiotic resistance a difficult clinical problem and a global health emergency. The membrane-active antimicrobial peptides (AMPs) attracted much attention due to a lower tendency to bacterial resistance than traditional antibiotics. However, some immanent drawbacks of AMPs may hamper their application in combating antibiotic resistance in the long run, such as susceptible to enzymatic degradation and low cell permeability. Herein, we report the design and synthesis of a novel series of amphiphilic peptidomimetics, from which we identified compounds that exhibited potent antimicrobial activity against a panel of clinically relevant Gram-positive and Gram-negative bacteria strains. The most potent compound 20 (SD-110-12) is able to kill intracellular bacterial pathogens and prevent the development of bacterial resistance under the tested conditions by targeting cell membranes. Additionally, compound 20 (SD-110-12) obtains good in vivo efficacy that is comparative to vancomycin by eradicating MRSA and suppressing inflammation in a mice infected skin wound model, demonstrating its promising therapeutic potential.
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Affiliation(s)
- Yating Chen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China
| | - Zifan Ye
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Wenteng Zhen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China
| | - Lu Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China
| | - Xiangyang Min
- Department of Clinical Laboratory Medicine, Yangpu Hospital of Tongji University, Shanghai 200000, China
| | - Yipeng Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China.
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China; Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Ma Su
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China; Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
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10
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Ranjit S, Deblais L, Rotondo F, Shannon B, Johnson R, Miller SA, Rajashekara G. Discovery of Novel Small Molecule Growth Inhibitors to Manage Pseudomonas Leaf Spot Disease on Peppers ( Capsicum sp.). PLANT DISEASE 2023; 107:3560-3574. [PMID: 37194208 DOI: 10.1094/pdis-12-22-2976-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Pseudomonas leaf spot (PLS) disease in peppers caused by Pseudomonas syringae pv. syringae (Pss) is an emerging seedborne phytopathogen. Pss infection can severely reduce the marketable yield of peppers in favorable environmental conditions and cause significant economic losses. The intensive use of copper-sulfate and streptomycin-sulfate to control PLS and other bacterial diseases is associated with antimicrobial-resistant Pss strains, making these control methods less effective. So, there is an urgent need to develop novel antimicrobials effective against Pss in peppers. Several studies, including those done in our laboratory, have shown that small molecule (SM) antimicrobials are ideal candidates as they can be effective against multidrug resistant bacteria. Therefore, our study aims to identify novel SM growth inhibitors of Pss, assess their safety, and evaluate their efficacy on Pss-infected pepper seeds and seedlings. Using high-throughput screening, we identified 10 SMs (PC1 to PC10) that inhibited the growth of Pss strains at 200 µM or lower concentrations. These SMs were effective against both copper- and streptomycin-resistant as well as biofilm-embedded Pss. These SMs were effective against other plant pathogens (n = 22) at low concentrations (<200 μM) and had no impact on beneficial phytobacteria (n = 12). Furthermore, these SMs showed better or equivalent antimicrobial activity against Pss in infested pepper seeds and inoculated seedlings compared with copper-sulfate (200 μM) and streptomycin (200 μg/ml). Additionally, none of the SMs were toxic to pepper tissues (seeds, seedlings, or fruits), human Caco-2 cells, and pollinator honeybees at 200 μM. Overall, the SMs identified in this study are promising alternative antimicrobials for managing PLS in pepper production.
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Affiliation(s)
- Sochina Ranjit
- Department of Animal Sciences, The Ohio State University, Wooster, OH
| | - Loïc Deblais
- Department of Animal Sciences, The Ohio State University, Wooster, OH
| | - Francesca Rotondo
- Department of Plant Pathology, The Ohio State University, Wooster, OH
| | - Brandon Shannon
- Department of Entomology, The Ohio State University, Wooster, OH
| | - Reed Johnson
- Department of Entomology, The Ohio State University, Wooster, OH
| | - Sally A Miller
- Department of Plant Pathology, The Ohio State University, Wooster, OH
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11
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Shao WB, Luo RS, Meng J, Lv XK, Xiang HM, Xiao WL, Zhou X, Liu LW, Wu ZB, Yang S. Engineering Phenothiazine-Based Functional Mimics of Host Defense Peptides as New Agrochemical Candidates: Design, Synthesis, and Antibacterial Evaluation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37906428 DOI: 10.1021/acs.jafc.3c03952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
In the protracted "arms race" between host and plant pathogenic bacteria, host organisms have evolved powerful weapons known as host defense peptides (HDPs). However, natural HDPs are not suitable for large-scale applications; therefore, researchers have chosen to develop bespoke small-molecule functional mimics. Phenothiazine derivatives were developed as functional HDPs mimics, owing to their broad biological activity and high lipophilicity. The phenothiazine analogues designed in this study exhibited excellent in vitro bioactivity against the three Gram-negative bacteria Xanthomonas oryzae pv oryzae, Xanthomonas axonopodis pv citri, and Pseudomonas syringae pv actinidiae, with optimal EC50 values of 0.80, 0.31, and 1.91 μg/mL, respectively. Preliminary evidence suggests that compound C2 may act on bacterial cell membranes and interact with bacterial Deoxyribonucleic acid in the groove binding mode. In vivo trials showed that compound C2 was highly effective against rice leaf blight (51.97-56.69%), with activity superior to those of bismerthiazol (40.7-43.4%) and thiodiazole copper (30.2-37.1%). Our study provides strong evidence to support the development of phenothiazine derivatives into pesticide candidates.
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Affiliation(s)
- Wu-Bin Shao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Rong-Shuang Luo
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Jiao Meng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xiao-Kang Lv
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Hong-Mei Xiang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Wan-Lin Xiao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xiang Zhou
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Li-Wei Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Zhi-Bing Wu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Song Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
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12
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Abdelbasir SM, Rayan DA, Ismail MM. Synthesis of Cu and CuO nanoparticles from e-waste and evaluation of their antibacterial and photocatalytic properties. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:89690-89704. [PMID: 37458881 PMCID: PMC10412494 DOI: 10.1007/s11356-023-28437-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/21/2023] [Indexed: 08/11/2023]
Abstract
Waste printed circuit boards (WPCBs) contain a plethora of valuable metals, considered an attractive secondary resource. In the current research, a hydrometallurgical process combined ammonia/ammonium chloride leaching and reduction (using L-ascorbic acid) to recover copper and its oxide (CuO) as nanosized particles from WPCBs was investigated. The results of leaching indicated that 96.7% of copper could be recovered at a temperature of 35 °C for a leaching duration of 2 h with ammonium chloride and ammonia concentration of 2 mol/L at a solid:liquid ratio of 1:10 g/cm3. The synthesized particles exhibit spherical and distorted sphere morphology with average particle size of 460 nm and 50 nm for Cu and CuO NPs, respectively. The antibacterial activity of Cu, CuO, and a (1:1) blend of both (Cu/CuO) has been examined against five different bacterial and fungal strains. The highest zone of inhibition was measured as 21.2 mm for Cu NPs toward Escherichia coli and 16.7 mm for Cu/CuO blend toward Bacillus cereus bacteria. The highest zone of inhibition was measured as 13 mm and 13.8 mm for Cu/CuO blend toward Fusarium proliferatum and Penicillium verrucosum fungi. Cu/CuO blend showed notable photocatalytic activity towards Rhodamine B dye under visible light irradiation with 96% degradation rate within 120 min. Using the process developed in this study, copper and its oxide as nanoparticles can be produced from WPCBs and used for multifunctional applications.
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Affiliation(s)
- Sabah M Abdelbasir
- Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, Cairo, 11421, Egypt.
| | - Diaa A Rayan
- Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, Cairo, 11421, Egypt
- Department of Physics, Deraya University, New Minya, Minya, Egypt
| | - Mahmoud M Ismail
- Physics Department, Faculty of Science, Al-Azhar Unversity, Nasr City, Cairo, 11884, Egypt
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13
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Sahu S, Niranjan R, Priyadarshini R, Lochab B. Benzoxazine-grafted-chitosan biopolymer films with inherent disulfide linkage: Antimicrobial properties. CHEMOSPHERE 2023; 328:138587. [PMID: 37019400 DOI: 10.1016/j.chemosphere.2023.138587] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/31/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Synthesis and fabrication of naturally sourced biopolymers, especially chitosan, grafted with renewable small molecules have recently attracted attention as efficient antimicrobial agents and are highly desired for sustainable material development. Advantageous inherent functionalities in biobased benzoxazine extend the possibility of crosslinking with chitosan which holds immense potential. Herein, a low-temperature, greener facile methodology is adopted for the covalent confinement of benzoxazine monomers bearing aldehyde and disulfide linkages within chitosan to form benzoxazine-grafted-chitosan copolymer films. The association of benzoxazine as Schiff base, hydrogen bonding, and ring-opened structures enabled the exfoliation of chitosan galleries, and such host-guest mediated interactions demonstrated outstanding properties like hydrophobicity, good thermal, and solution stability due to the synergistic effects. Furthermore, the structures empowered excellent bactericidal properties against both E. coli and S. aureus as investigated by GSH loss, live/dead fluorescence microscopy, and morphological alteration on the cell surface by SEM. The work provides the benefits of disulfide-linked benzoxazines on chitosan, offering a promising avenue for general and eco-friendly usage in wound-healing and packaging material.
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Affiliation(s)
- Sangeeta Sahu
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, Uttar Pradesh, 201314, India
| | - Rashmi Niranjan
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, Uttar Pradesh, 201314, India
| | - Richa Priyadarshini
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, Uttar Pradesh, 201314, India.
| | - Bimlesh Lochab
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, Uttar Pradesh, 201314, India.
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14
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Stojowska-Swędrzyńska K, Kuczyńska-Wiśnik D, Laskowska E. New Strategies to Kill Metabolically-Dormant Cells Directly Bypassing the Need for Active Cellular Processes. Antibiotics (Basel) 2023; 12:1044. [PMID: 37370363 DOI: 10.3390/antibiotics12061044] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/09/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
Antibiotic therapy failure is often caused by the presence of persister cells, which are metabolically-dormant bacteria capable of surviving exposure to antimicrobials. Under favorable conditions, persisters can resume growth leading to recurrent infections. Moreover, several studies have indicated that persisters may promote the evolution of antimicrobial resistance and facilitate the selection of specific resistant mutants; therefore, in light of the increasing numbers of multidrug-resistant infections worldwide, developing efficient strategies against dormant cells is of paramount importance. In this review, we present and discuss the efficacy of various agents whose antimicrobial activity is independent of the metabolic status of the bacteria as they target cell envelope structures. Since the biofilm-environment is favorable for the formation of dormant subpopulations, anti-persister strategies should also include agents that destroy the biofilm matrix or inhibit biofilm development. This article reviews examples of selected cell wall hydrolases, polysaccharide depolymerases and antimicrobial peptides. Their combination with standard antibiotics seems to be the most promising approach in combating persistent infections.
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Affiliation(s)
- Karolina Stojowska-Swędrzyńska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Dorota Kuczyńska-Wiśnik
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Ewa Laskowska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
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15
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Cadelis MM, Edmeades LR, Chen D, Gill ES, Fraser K, Rouvier F, Bourguet-Kondracki ML, Brunel JM, Copp BR. Investigation of Naphthyl-Polyamine Conjugates as Antimicrobials and Antibiotic Enhancers. Antibiotics (Basel) 2023; 12:1014. [PMID: 37370335 DOI: 10.3390/antibiotics12061014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
As part of our search for new antimicrobials and antibiotic enhancers, a series of naphthyl- and biphenyl-substituted polyamine conjugates have been synthesized. The structurally-diverse library of compounds incorporated variation in the capping end groups and in the length of the polyamine (PA) core. Longer chain (PA-3-12-3) variants containing both 1-naphthyl and 2-naphthyl capping groups exhibited more pronounced intrinsic antimicrobial properties against methicillin-resistant Staphylococcus aureus (MRSA) (MIC ≤ 0.29 µM) and the fungus Cryptococcus neoformans (MIC ≤ 0.29 µM). Closer mechanistic study of one of these analogues, 20f, identified it as a bactericide. In contrast to previously reported diarylacyl-substituted polyamines, several examples in the current set were able to enhance the antibiotic action of doxycycline and/or erythromycin towards the Gram-negative bacteria Pseudomonas aeruginosa and Escherichia coli. Two analogues (19a and 20c) were of note, exhibiting greater than 32-fold enhancement in activity. This latter result suggests that α,ω-disubstituted polyamines bearing 1-naphthyl- and 2-naphthyl-capping groups are worthy of further investigation and optimization as non-toxic antibiotic enhancers.
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Affiliation(s)
- Melissa M Cadelis
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Liam R Edmeades
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Dan Chen
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Evangelene S Gill
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Kyle Fraser
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Florent Rouvier
- Membranes et Cibles Thérapeutiques (MCT), SSA, INSERM, Aix-Marseille Universite, 27 bd Jean Moulin, 13385 Marseille, France
| | - Marie-Lise Bourguet-Kondracki
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle, 57 rue Cuvier (C.P. 54), 75005 Paris, France
| | - Jean Michel Brunel
- Membranes et Cibles Thérapeutiques (MCT), SSA, INSERM, Aix-Marseille Universite, 27 bd Jean Moulin, 13385 Marseille, France
| | - Brent R Copp
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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16
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Geng Y, Yuan Y, Bao Y, Huang S, Wang X, Huang L, She C, Gong X, Xiong M. pH Window for High Selectivity of Ionizable Antimicrobial Polymers toward Bacteria. ACS APPLIED MATERIALS & INTERFACES 2023; 15:21781-21791. [PMID: 37115169 DOI: 10.1021/acsami.2c23240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Antimicrobial polymers exhibit great potential for treating drug-resistant bacteria; however, designing antimicrobial polymers that can selectively kill bacteria and cause relatively low toxicity to normal tissues/cells remains a key challenge. Here, we report a pH window for ionizable polymers that exhibit high selectivity toward bacteria. Ionizable polymer PC6A showed the greatest selectivity (131.6) at pH 7.4, exhibiting low hemolytic activity and high antimicrobial activity against bacteria, whereas a very high or low protonation degree (PD) produced relatively low selectivity (≤35.6). Bactericidal mechanism of PC6A primarily comprised membrane lysis without inducing drug resistance even after consecutive incubation for 32 passages. Furthermore, PC6A demonstrated synergistic effects in combination with antibiotics at pH 7.4. Hence, this study provides a strategy for designing selective antimicrobial polymers.
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Affiliation(s)
- Yuanyuan Geng
- Guangzhou First People's Hospital, School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou 511442, P. R. China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Yueling Yuan
- Guangzhou First People's Hospital, School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou 511442, P. R. China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Yan Bao
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510300, P. R. China
| | - Songyin Huang
- Biotherapy Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, P. R. China
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, P. R. China
| | - Xiaochuan Wang
- Guangzhou First People's Hospital, School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou 511442, P. R. China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Liangqi Huang
- Guangzhou First People's Hospital, School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou 511442, P. R. China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
| | - Chun She
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510300, P. R. China
| | - Xiangjun Gong
- Faculty of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510641, P. R. China
| | - Menghua Xiong
- Guangzhou First People's Hospital, School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou 511442, P. R. China
- National Engineering Research Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
- Key Laboratory of Biomedical Engineering of Guangdong Province, and Innovation Centre for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, P. R. China
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17
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Synthesis and Evaluation of the Antimicrobial Activity of Cationic Amphiphiles Based on Bivalent Diethylenetriamine Derivatives. Pharm Chem J 2023. [DOI: 10.1007/s11094-023-02834-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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18
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Teng P, Shao H, Huang B, Xie J, Cui S, Wang K, Cai J. Small Molecular Mimetics of Antimicrobial Peptides as a Promising Therapy To Combat Bacterial Resistance. J Med Chem 2023; 66:2211-2234. [PMID: 36739538 DOI: 10.1021/acs.jmedchem.2c00757] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Clinically, antibiotics are widely used to treat infectious diseases; however, excessive drug abuse and overuse exacerbate the prevalence of drug-resistant bacterial pathogens, making the development of novel antibiotics extremely difficult. Antimicrobial peptide (AMP) is one of the most promising candidates for overcoming bacterial resistance owing to its unique structure and mechanism of action. This study examines the development of small molecular mimetics of AMPs over the past two decades. These mimetics can selectively disrupt membranes, which are the characteristic antibacterial mechanism of AMPs. In addition, the advantages and disadvantages of small AMP mimetics are discussed. The small molecular mimetics of AMPs are anticipated to garner interest and investment in discovering new antibiotics. This Perspective will assist in revitalizing the golden age of antibiotics in the current era of combating bacterial resistance.
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Affiliation(s)
- Peng Teng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Haodong Shao
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Bo Huang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
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19
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Buzoglu Kurnaz L, Luo Y, Yang X, Alabresm A, Leighton R, Kumar R, Hwang J, Decho AW, Nagarkatti P, Nagarkatti M, Tang C. Facial amphiphilicity index correlating chemical structures with antimicrobial efficacy. Bioact Mater 2023; 20:519-527. [PMID: 35846842 PMCID: PMC9253162 DOI: 10.1016/j.bioactmat.2022.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/20/2022] Open
Abstract
Facial amphiphilicity is an extraordinary chemical structure feature of a variety of antimicrobial peptides and polymers. Vast efforts have been dedicated to small molecular, macromolecular and dendrimer-like systems to mimic this highly preferred structure or conformation, including local facial amphiphilicity and global amphiphilicity. This work conceptualizes Facial Amphiphilicity Index (FAI) as a numerical value to quantitatively characterize the measure of chemical compositions and structural features in dictating antimicrobial efficacy. FAI is a ratio of numbers of charges to rings, representing both compositions of hydrophilicity and hydrophobicity. Cationic derivatives of multicyclic compounds were evaluated as model systems for testing antimicrobial selectivity against Gram-negative and Gram-positive bacteria. Both monocyclic and bicyclic compounds are non-antimicrobial regardless of FAIs. Antimicrobial efficacy was observed with systems having larger cross-sectional areas including tricyclic abietic acid and tetracyclic bile acid. While low and high FAIs respectively lead to higher and lower antimicrobial efficacy, in consideration of cytotoxicity, the sweet spot is typically suited with intermediate FAIs for each specific system. This can be well explained by the synergistic hydrophobic-hydrophobic and electrostatic interactions with bacterial cell membranes and the difference between bacterial and mammalian cell membranes. The adoption of FAI would pave a new avenue toward the design of next-generation antimicrobial macromolecules and peptides. Established a numerical index to quantify the effect of facial amphiphilicity on antimicrobial efficacy. Evaluated the facial amphiphilicity index of multicyclic compounds possessing various rings and cationic charges. Provided this index a new tool toward more quantitative designs of AMP mimics.
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Affiliation(s)
- Leman Buzoglu Kurnaz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Yuanyuan Luo
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Xiaoming Yang
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Amjed Alabresm
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Ryan Leighton
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Rani Kumar
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - JiHyeon Hwang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
| | - Alan W. Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, 29208, United States
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina, School of Medicine, Columbia, SC, 29209, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States
- Corresponding author.
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20
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Sikder A, Pearce AK, Kumar CMS, O'Reilly RK. Elucidating the role of multivalency, shape, size and functional group density on antibacterial activity of diversified supramolecular nanostructures enabled by templated assembly. MATERIALS HORIZONS 2023; 10:171-178. [PMID: 36321619 PMCID: PMC9810103 DOI: 10.1039/d2mh01117d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
With the increased prevalence of antibiotic-resistant infections, there is an urgent need to develop novel antibacterial materials. In addition, gaining a complete understanding of the structural features that impart activity toward target microorganisms is essential to enable materials optimisation. Here we have reported a rational design to fabricate antibacterial supramolecular nanoparticles with variable shape, size and cationic group density, by exploiting noncovalent interactions between a shape determining template amphiphile and a cationic amphiphile to introduce charge on the nanoparticle surface. We have shown that the monomeric cationic amphiphile alone showed poor antibacterial activity, whereas nanostructures formed by co-assembling the complementary units showed significantly enhanced antibacterial efficiency. Further, the systematic variation of several structural parameters such as shape, spacing between the cationic groups and size of these nanostructures allowed us to elicit the role of each parameter on the overall antibacterial properties. Finally, we investigated the origin of the differing antibacterial activity of these nanoparticles having different shape and size but with the same molecular composition, by comparing the thermodynamic parameters of their binding interactions with a bacterial membrane mimic.
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Affiliation(s)
- Amrita Sikder
- School of Chemistry, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Amanda K Pearce
- School of Chemistry, University of Birmingham, Birmingham, B15 2TT, UK.
| | - C M Santosh Kumar
- Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Rachel K O'Reilly
- School of Chemistry, University of Birmingham, Birmingham, B15 2TT, UK.
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21
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Cai Q, Yu Q, Liang W, Li H, Liu J, Li H, Chen Y, Fang S, Zhong R, Liu S, Lin S. Membrane-Active Nonivamide Derivatives as Effective Broad-Spectrum Antimicrobials: Rational Design, Synthesis, and Biological Evaluation. J Med Chem 2022; 65:16754-16773. [PMID: 36510819 DOI: 10.1021/acs.jmedchem.2c01604] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Antibiotic resistance is emerging as a "global public health concern". To address the growing epidemic of multidrug-resistant pathogens, the development of novel antimicrobials is urgently needed. In this study, by biomimicking cationic antibacterial peptides, we designed and synthesized a series of new membrane-active nonivamide and capsaicin derivatives as peptidomimetic antimicrobials. Through modulating charge/hydrophobicity balance and rationalizing structure-activity relationships of these peptidomimetics, compound 51 was identified as the lead compound. Compound 51 exhibited potent antibacterial activity against both Gram-positive bacteria (MICs = 0.39-0.78 μg/mL) and Gram-negative bacteria (MICs = 1.56-6.25 μg/mL), with low hemolytic activity and low cytotoxicity. Compound 51 displayed a faster bactericidal action through a membrane-disruptive mechanism and avoided bacterial resistance development. Furthermore, compound 51 significantly reduced the microbial burden in a murine model of keratitis infected by Staphylococcus aureus or Pseudomonas aeruginosa. Hence, this design strategy can provide a promising and effective solution to overcome antibiotic resistance.
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Affiliation(s)
- Qiongna Cai
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Qian Yu
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Wanxin Liang
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Haizhou Li
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Jiayong Liu
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Hongxia Li
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Yongzhi Chen
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Shanfang Fang
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Rongcui Zhong
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Shouping Liu
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuimu Lin
- The Fifth Affiliated Hospital & Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
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22
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Yang R, Hou E, Cheng W, Yan X, Zhang T, Li S, Yao H, Liu J, Guo Y. Membrane-Targeting Neolignan-Antimicrobial Peptide Mimic Conjugates to Combat Methicillin-Resistant Staphylococcus aureus (MRSA) Infections. J Med Chem 2022; 65:16879-16892. [PMID: 36512751 DOI: 10.1021/acs.jmedchem.2c01674] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) continue to endanger public health. Here, we report the synthesis of neolignan isomagnolone (I) and its isomer II, and the preparation of a series of novel neolignan-antimicrobial peptide (AMP) mimic conjugates. Notably, conjugates III5 and III15 exhibit potent anti-MRSA activity in vitro and in vivo, comparable to that of vancomycin, a current effective treatment for MRSA. Moreover, III5 and III15 display not only fast-killing kinetics and low resistance frequency but also low toxicity as well as effects on bacterial biofilms. Mechanism studies reveal that III5 and III15 exhibit rapid bactericidal effects through binding to the phosphatidylglycerol (PG) and cardiolipin (CL) of the bacterial membrane, thereby disrupting the cell membranes and allowing increased reactive oxygen species (ROS) as well as protein and DNA leakage. The results indicate that these neolignan-AMP mimic conjugates could be promising antimicrobial candidates for combating MRSA infections.
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Affiliation(s)
- Ruige Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Enhua Hou
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wanqing Cheng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xiaoting Yan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Tingting Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Shihong Li
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China
| | - Hong Yao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, Henan, China
| | - Jifeng Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yong Guo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
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23
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Sudheendran Leena S, Kaul G, Akhir A, Saxena D, Chopra S, Deepthi A. Green synthesis and antibacterial evaluation of spiro fused tryptanthrin-thiopyrano[2,3-b]indole hybrids targeting drug-resistant S. aureus. Bioorg Chem 2022; 128:106046. [DOI: 10.1016/j.bioorg.2022.106046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/02/2022]
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24
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Liang W, Yu Q, Zheng Z, Liu J, Cai Q, Liu S, Lin S. Design and Synthesis of Phenyl Sulfide-Based Cationic Amphiphiles as Membrane-Targeting Antimicrobial Agents against Gram-Positive Pathogens. J Med Chem 2022; 65:14221-14236. [PMID: 36256884 DOI: 10.1021/acs.jmedchem.2c01437] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Due to the emergence of antimicrobial resistance and the lack of new antibacterial agents, it has become urgent to discover and develop new antibacterial agents against multidrug-resistant pathogens. Antimicrobial peptides (AMPs) serve as the first line of defense for the host. In this work, we have designed, synthesized, and biologically evaluated a series of phenyl sulfide derivatives by biomimicking the structural features and biological functions of AMPs. Among these derivatives, the most promising compound 17 exhibited potent antibacterial activity against Gram-positive bacteria (minimum inhibitory concentrations = 0.39-1.56 μg/mL), low hemolytic activity (HC50 > 200 μg/mL), and high membrane selectivity. In addition, 17 can rapidly kill Gram-positive bacteria within 0.5 h through membrane-targeting action and avoid antibiotic resistance. More importantly, 17 showed high in vivo efficacy against Staphylococcus aureus in a murine corneal infection model. Therefore, 17 has great potential as a lead compound for the treatment of Gram-positive bacterial infections.
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Affiliation(s)
- Wanxin Liang
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Qian Yu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Zixian Zheng
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Jiayong Liu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Qiongna Cai
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Shouping Liu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuimu Lin
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
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25
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Chen X, Han J, Wang S. Integrated evolutionary analysis reveals the resistance risk to antimicrobial peptides in Staphylococcus aureus. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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26
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Svenson J, Molchanova N, Schroeder CI. Antimicrobial Peptide Mimics for Clinical Use: Does Size Matter? Front Immunol 2022; 13:915368. [PMID: 35720375 PMCID: PMC9204644 DOI: 10.3389/fimmu.2022.915368] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
The search for efficient antimicrobial therapies that can alleviate suffering caused by infections from resistant bacteria is more urgent than ever before. Infections caused by multi-resistant pathogens represent a significant and increasing burden to healthcare and society and researcher are investigating new classes of bioactive compounds to slow down this development. Antimicrobial peptides from the innate immune system represent one promising class that offers a potential solution to the antibiotic resistance problem due to their mode of action on the microbial membranes. However, challenges associated with pharmacokinetics, bioavailability and off-target toxicity are slowing down the advancement and use of innate defensive peptides. Improving the therapeutic properties of these peptides is a strategy for reducing the clinical limitations and synthetic mimics of antimicrobial peptides are emerging as a promising class of molecules for a variety of antimicrobial applications. These compounds can be made significantly shorter while maintaining, or even improving antimicrobial properties, and several downsized synthetic mimics are now in clinical development for a range of infectious diseases. A variety of strategies can be employed to prepare these small compounds and this review describes the different compounds developed to date by adhering to a minimum pharmacophore based on an amphiphilic balance between cationic charge and hydrophobicity. These compounds can be made as small as dipeptides, circumventing the need for large compounds with elaborate three-dimensional structures to generate simplified and potent antimicrobial mimics for a range of medical applications. This review highlight key and recent development in the field of small antimicrobial peptide mimics as a promising class of antimicrobials, illustrating just how small you can go.
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Affiliation(s)
| | - Natalia Molchanova
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Christina I. Schroeder
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, United States
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27
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Filatova SM, Guseva MK, Bodrova TG, Parshina DV, Budanova UA, Sebyakin YL. Evolutionary Development and Structural Diversity of Natural Antimicrobial Peptides, Peptidometics, and Cationic Amphiphiles Based on Amino Acids. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363221130338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Limwongyut J, Moreland AS, Nie C, Read de Alaniz J, Bazan GC. Amide Moieties Modulate the Antimicrobial Activities of Conjugated Oligoelectrolytes against Gram-negative Bacteria. Chemistry 2022; 11:e202100260. [PMID: 35133087 PMCID: PMC8822875 DOI: 10.1002/open.202100260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/23/2021] [Indexed: 11/18/2022]
Abstract
Cationic conjugated oligoelectrolytes (COEs) are a class of compounds that can be tailored to achieve relevant in vitro antimicrobial properties with relatively low cytotoxicity against mammalian cells. Three distyrylbenzene‐based COEs were designed containing amide functional groups on the side chains. Their properties were compared to two representative COEs with only quaternary ammonium groups. The optimal compound, COE2−3C−C3‐Apropyl, has an antimicrobial efficacy against Escherichia coli with an MIC=2 μg mL−1, even in the presence of human serum albumin low cytotoxicity (IC50=740 μg mL−1) and minimal hemolytic activity. Moreover, we find that amide groups increase interactions between COEs and a bacterial lipid mimic based on calcein leakage assay and allow COEs to readily permeabilize the cytoplasmic membrane of E. coli. These findings suggest that hydrogen bond forming moieties can be further applied in the molecular design of antimicrobial COEs to further improve their selectivity towards bacteria.
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Affiliation(s)
- Jakkarin Limwongyut
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Alex S Moreland
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Chenyao Nie
- Department of Chemistry and Chemical Engineering, National University of Singapore, Singapore, 117543, Singapore
| | - Javier Read de Alaniz
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Guillermo C Bazan
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.,Department of Chemistry and Chemical Engineering, National University of Singapore, Singapore, 117543, Singapore
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29
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Liao W, Shi X, Zhuo LG, Yang X, Zhao P, Kan W, Wang G, Wei H, Yang Y, Zhou Z, Wang J. Comparison and Mechanism Study of Antibacterial Activity of Cationic and Neutral Oligo-Thiophene-Ethynylene. ACS APPLIED MATERIALS & INTERFACES 2021; 13:41012-41020. [PMID: 34410119 DOI: 10.1021/acsami.1c02474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Photodynamic therapy (PDT) is a potential approach to resolve antibiotic resistance, and phenylene/thiophene-ethynylene oligomers have been widely studied as effective antibacterial reagents. Oligomers with thiophene moieties usually exhibit good antibacterial activity under light irradiation and dark conditions. In the previous study, we verified that neutral oligo-p-phenylene-ethynylenes (OPEs) exhibit better antibacterial activity than the corresponding cationic ones; however, whether this regular pattern also operates in other kinds of oligomers such as oligo-thiophene-ethynylene (OTE) is unknown. Also, the antibacterial activity comparison of OTEs bearing cyclic and acyclic amino groups will offer useful information to further understand the role of amino groups in the antibacterial process and guide the antibacterial reagent design as amino groups affect the antibacterial activity a lot. We synthesized four OTEs bearing neutral or cationic, cyclic, or acyclic amino groups and studied their antibacterial activity in detail. The experimental results indicated that the OTEs exhibited better antibacterial activity than the OPEs, the neutral OTEs exhibited better antibacterial activity in most cases, and OTEs bearing cyclic amino groups exhibited better antibacterial activity than those bearing acyclic ones in most cases. This study provides useful guidelines for further antibacterial reagent design and investigations.
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Affiliation(s)
- Wei Liao
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Xiaoyi Shi
- West China Hospital of Sichuan University Cleaning and Disinfection Supply Center, Chengdu, Sichuan 610041, P. R. China
| | - Lian-Gang Zhuo
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Xia Yang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Peng Zhao
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Wentao Kan
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Guanquan Wang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Hongyuan Wei
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Zhijun Zhou
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China.,Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P. R. China
| | - Jing Wang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China.,Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
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30
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Lin L, Chi J, Yan Y, Luo R, Feng X, Zheng Y, Xian D, Li X, Quan G, Liu D, Wu C, Lu C, Pan X. Membrane-disruptive peptides/peptidomimetics-based therapeutics: Promising systems to combat bacteria and cancer in the drug-resistant era. Acta Pharm Sin B 2021; 11:2609-2644. [PMID: 34589385 PMCID: PMC8463292 DOI: 10.1016/j.apsb.2021.07.014] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 02/05/2023] Open
Abstract
Membrane-disruptive peptides/peptidomimetics (MDPs) are antimicrobials or anticarcinogens that present a general killing mechanism through the physical disruption of cell membranes, in contrast to conventional chemotherapeutic drugs, which act on precise targets such as DNA or specific enzymes. Owing to their rapid action, broad-spectrum activity, and mechanisms of action that potentially hinder the development of resistance, MDPs have been increasingly considered as future therapeutics in the drug-resistant era. Recently, growing experimental evidence has demonstrated that MDPs can also be utilized as adjuvants to enhance the therapeutic effects of other agents. In this review, we evaluate the literature around the broad-spectrum antimicrobial properties and anticancer activity of MDPs, and summarize the current development and mechanisms of MDPs alone or in combination with other agents. Notably, this review highlights recent advances in the design of various MDP-based drug delivery systems that can improve the therapeutic effect of MDPs, minimize side effects, and promote the co-delivery of multiple chemotherapeutics, for more efficient antimicrobial and anticancer therapy.
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Affiliation(s)
- Liming Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yilang Yan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Rui Luo
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xiaoqian Feng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yuwei Zheng
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Dongyi Xian
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Li
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Daojun Liu
- Shantou University Medical College, Shantou 515041, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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31
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Wang M, Feng X, Gao R, Sang P, Pan X, Wei L, Lu C, Wu C, Cai J. Modular Design of Membrane-Active Antibiotics: From Macromolecular Antimicrobials to Small Scorpionlike Peptidomimetics. J Med Chem 2021; 64:9894-9905. [PMID: 33789422 PMCID: PMC8886609 DOI: 10.1021/acs.jmedchem.1c00312] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Infections caused by multidrug-resistant bacteria have emerged in recent decades, leading to escalating interest in host defense peptides (HDPs) to reverse this dangerous trend. Inspired by the modular design in bioengineering, herein we report a new class of small amphiphilic scorpionlike peptidomimetics based on this strategy. These HDP mimics show potent antimicrobial activity against both Gram-positive and Gram-negative bacteria without drug resistance but with a high therapeutic index. The membrane-compromising action mode was suggested to be their potential bactericidal mechanism. Pharmacodynamic experiments were conducted using a murine abscess model of methicillin-resistant Staphylococcus aureus (MRSA) infections. The lead compound 12 showed impressive in vivo therapeutic efficacy with ∼99.998% (4.7log) reduction in skin MRSA burden, a significantly higher bactericidal efficiency than ciprofloxacin, and good biocompatibility. These results highlight the potential of these HDP mimics as novel antibiotic therapeutics.
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Affiliation(s)
- Minghui Wang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaoqian Feng
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
- Department of Pharmaceutics, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xin Pan
- Department of Pharmaceutics, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China
| | - Lulu Wei
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou, Guangdong 511443, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
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32
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Effective and biocompatible antibacterial surfaces via facile synthesis and surface modification of peptide polymers. Bioact Mater 2021; 6:4531-4541. [PMID: 34027238 PMCID: PMC8138731 DOI: 10.1016/j.bioactmat.2021.05.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 12/16/2022] Open
Abstract
It is an urgent need to tackle drug-resistance microbial infections that are associated with implantable biomedical devices. Host defense peptide-mimicking polymers have been actively explored in recent years to fight against drug-resistant microbes. Our recent report on lithium hexamethyldisilazide-initiated superfast polymerization on amino acid N-carboxyanhydrides enables the quick synthesis of host defense peptide-mimicking peptide polymers. Here we reported a facile and cost-effective thermoplastic polyurethane (TPU) surface modification of peptide polymer (DLL: BLG = 90 : 10) using plasma surface activation and substitution reaction between thiol and bromide groups. The peptide polymer-modified TPU surfaces exhibited board-spectrum antibacterial property as well as effective contact-killing ability in vitro. Furthermore, the peptide polymer-modified TPU surfaces showed excellent biocompatibility, displaying no hemolysis and cytotoxicity. In vivo study using methicillin-resistant Staphylococcus aureus (MRSA) for subcutaneous implantation infectious model showed that peptide polymer-modified TPU surfaces revealed obvious suppression of infection and great histocompatibility, compared to bare TPU surfaces. We further explored the antimicrobial mechanism of the peptide polymer-modified TPU surfaces, which revealed a surface contact-killing mechanism by disrupting the bacterial membrane. These results demonstrated great potential of the peptide-modified TPU surfaces for practical application to combat bacterial infections that are associated with implantable materials and devices. A convenient surface modification of peptide polymer 90 : 10 DLL : BLG to enable material surfaces antibacterial properties. The modified thermoplastic polyurethane (TPU) surfaces show board-spectrum antibacterial performance and excellent biocompatibility both in vitro and in vivo. The contact-killing surfaces demonstrate great potential for practical application to combat bacterial infections associated with implantable materials and devices.
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Wei L, Gao R, Wang M, Wang Y, Shi Y, Gu M, Cai J. Dimeric lipo-α/sulfono-γ-AA hybrid peptides as broad-spectrum antibiotic agents. Biomater Sci 2021; 9:3410-3424. [PMID: 33949388 PMCID: PMC8903075 DOI: 10.1039/d0bm01955k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/14/2023]
Abstract
There is an urgent need to develop novel antibiotic agents that can combat emerging drug resistance. Herein, we report the design and investigation of a class of short dimeric antimicrobial lipo-α/sulfono-γ-AA hybrid peptides. Some of these peptides exhibit potent and broad-spectrum antimicrobial activity toward both clinically related Gram-positive and Gram-negative bacteria. The TEM study suggests that these hybrid peptides can compromise bacterial membranes and lead to bacterial death. Membrane depolarization and fluorescence microscopy studies also indicate that the mechanism of action is analogous to host-defense peptides (HDPs). Furthermore, the lead compound shows the ability to effectively inhibit biofilms formed from MRSA and E. coli. Further development of the short dimeric lipo-α/sulfono-γ-AA hybrid peptides may lead to a new generation of antimicrobial biomaterials to combat drug resistance.
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Affiliation(s)
- Lulu Wei
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Minghui Wang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Yafeng Wang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Yan Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Meng Gu
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
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Li H, Liu J, Liu CF, Li H, Luo J, Fang S, Chen Y, Zhong R, Liu S, Lin S. Design, Synthesis, and Biological Evaluation of Membrane-Active Bakuchiol Derivatives as Effective Broad-Spectrum Antibacterial Agents. J Med Chem 2021; 64:5603-5619. [PMID: 33909443 DOI: 10.1021/acs.jmedchem.0c02059] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Infections caused by drug-resistant bacteria seriously endanger human health and global public health. Therefore, it is urgent to discover and develop novel antimicrobial agents to combat multidrug-resistant bacteria. In this study, we designed and synthesized a series of new membrane-active bakuchiol derivatives by biomimicking the structure and function of cationic antibacterial peptides. The most promising compound 28 displayed potent antibacterial activity against both Gram-positive bacteria (minimum inhibitory concentration, MIC = 1.56-3.125 μg/mL) and Gram-negative bacteria (MIC = 3.125 μg/mL), very weak hemolytic activity, and low cytotoxicity. Compound 28 had rapid bactericidal properties and avoided bacterial resistance. More importantly, compound 28 showed strong in vivo antibacterial efficacy against Staphylococcus aureus and Pseudomonas aeruginosa in murine corneal infection models. This design strategy is expected to provide an effective solution to the antibiotic crisis.
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Affiliation(s)
- Hongxia Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Jiayong Liu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Chuan-Fa Liu
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Haizhou Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Jiachun Luo
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Shanfang Fang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Yongzhi Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Rongcui Zhong
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Shouping Liu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Shuimu Lin
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
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35
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Lin C, Wang Y, Le M, Chen KF, Jia YG. Recent Progress in Bile Acid-Based Antimicrobials. Bioconjug Chem 2021; 32:395-410. [PMID: 33683873 DOI: 10.1021/acs.bioconjchem.0c00642] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the emergence of drug-resistant bacteria and the formation of biofilms by bacteria and fungi, microbial infections gradually threaten global health. Natural antimicrobial peptides (AMPs) have low susceptibility for developing resistance due to the membrane targeted mechanism, but instability and high manufacturing cost limit their applications in clinic. Bile acids, a group of steroids in the human body, with high stability, biocompatibility, and inherent facial amphiphilic structure similar to the characteristics of AMPs, have been applied to the biological field, such as drug delivery systems, self-healing hydrogels, antimicrobials, and so on. In this review, we mainly focus on the different classes of bile acid-based antimicrobials in recent years. Various designs and methods for the preparation of unimolecular antimicrobials with bile acid skeletons are first introduced, including coupling of primary amine, quaternary ammonium, and amino acid units with bile acid skeletons. Some representative oligomeric antimicrobials, including dimers of bile acids, are summarized. Finally, macromolecular antimicrobials bearing some positive charges at the main chain or side chain and interaction mechanisms of these bile acid-based antimicrobials are discussed.
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Affiliation(s)
- Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yushi Wang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Mengqi Le
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Kai-Feng Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
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36
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Jiang Y, Chen Y, Song Z, Tan Z, Cheng J. Recent advances in design of antimicrobial peptides and polypeptides toward clinical translation. Adv Drug Deliv Rev 2021; 170:261-280. [PMID: 33400958 DOI: 10.1016/j.addr.2020.12.016] [Citation(s) in RCA: 147] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/16/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022]
Abstract
The recent outbreaks of infectious diseases caused by multidrug-resistant pathogens have sounded a piercing alarm for the need of new effective antimicrobial agents to guard public health. Among different types of candidates, antimicrobial peptides (AMPs) and the synthetic mimics of AMPs (SMAMPs) have attracted significant enthusiasm in the past thirty years, due to their unique membrane-active antimicrobial mechanism and broad-spectrum antimicrobial activity. The extensive research has brought many drug candidates into clinical and pre-clinical development. Despite tremendous progresses have been made, several major challenges inherent to current design strategies have slowed down the clinical translational development of AMPs and SMAMPs. However, these challenges also triggered many efforts to redesign and repurpose AMPs. In this review, we will first give an overview on AMPs and their synthetic mimics, and then discuss the current status of their clinical translation. Finally, the recent advances in redesign and repurposing AMPs and SMAMPs are highlighted.
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37
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Yuan Q, Zhao Y, Zhang Z, Tang Y. On-Demand Antimicrobial Agent Release from Functionalized Conjugated Oligomer-Hyaluronic Acid Nanoparticles for Tackling Antimicrobial Resistance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:257-265. [PMID: 33378174 DOI: 10.1021/acsami.0c19283] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Controllable drug release is promising for fighting against antimicrobial resistance, which is a critical threat to human health worldwide. Herein, new hyaluronidase-responsive conjugated oligo(thiophene ethynylene) (OTE)-covalently modified hyaluronic acid (OTE-HA) nanoparticles for on-demand release of antimicrobial agents are reported. The synthesis of amphiphilic OTE-HA was carried out by esterification reaction. The resulting macromolecules were self-assembled in water to form nanoparticles, in which the hydrophobic OTE section, as bactericides, formed "cores" and the hydrophilic hyaluronic acid (HA) formed "shells". The OTE-HA nanoparticles avoid bactericide premature leakage and effectively block the dark cytotoxicity of the OTE section, possessing excellent biocompatibility. Using methicillin-resistant Staphylococcus aureus (MRSA) as an example, hyaluronidase, largely secreted by MRSA, can in situ trigger the release of OTE via hydrolyzing OTE-HA nanoparticles into fragments, even disaccharides linked with OTE. Importantly, the OTE section could effectively break cell membranes, leading to bacterial death. The half-maximal inhibitory concentration of the nanoparticles against MRSA is 3.3 μg/mL. The great antibacterial activity of OTE-HA nanoparticles against Gram-positive bacteria Streptococcus pneumoniae further confirms the controllable bactericide delivery mechanism. OTE-HA nanoparticles coated on a surface can also effectively inhibit the growth of bacteria, which holds a remarkable promise in biomedical applications. Therefore, this work provides a favorable strategy of on-demand and in situ drug release for sterilization and defeating antimicrobial resistance.
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Affiliation(s)
- Qiong Yuan
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Yantao Zhao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Ziqi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Yanli Tang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
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38
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Liao W, Zhuo LG, Yang X, Zhao P, Kan W, Wang G, Song H, Wei H, Yang Y, Tian G, Zhao R, Zhou Z, Wang J. Biocidal Activity and Mechanism Study of Unsymmetrical Oligo-Phenylene-Ethynylenes. ACS APPLIED BIO MATERIALS 2020; 3:5644-5651. [DOI: 10.1021/acsabm.0c00267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Wei Liao
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Lian-gang Zhuo
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Xia Yang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Peng Zhao
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Wentao Kan
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Guanquan Wang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Hu Song
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
| | - Hongyuan Wei
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou 215123, P. R. China
| | - Guozhong Tian
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, P. R. China
| | - Rongtao Zhao
- PLA Center for Disease Control and Prevention, Beijing 100071, P. R. China
| | - Zhijun Zhou
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Jing Wang
- Institute of Nuclear Physics and Chemistry (INPC), China Academy of Engineering Physics (CAEP), Mianyang 621999, P. R. China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang 621999, P. R. China
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