1
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Wang K, Li W, Wu J, Yan Z, Li H. Effect of oxidized Bletilla striata polysaccharide on fibrin hydrogel formation and its application in wound healing dressing. Int J Biol Macromol 2024; 279:135303. [PMID: 39236945 DOI: 10.1016/j.ijbiomac.2024.135303] [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: 04/26/2024] [Revised: 08/30/2024] [Accepted: 09/02/2024] [Indexed: 09/07/2024]
Abstract
Wound healing is influenced by various factors, including oxidative damage, bacterial infection, and inadequate angiogenesis, which collectively contribute to a protracted healing process. In this work, we designed innovative multifunctional hydrogels based on fibrin integrated with Bletilla striata polysaccharides (BSP) or oxidated Bletilla striata polysaccharides (OBSP) for use as wound dressings. The preliminary structure and bioactivity of BSP and OBSP were investigated. The effect of polysaccharides on the self-assembly process of fibrin hydrogels were also evaluated. BSP and OBSP significantly altered the initial fibrin fibrillogenesis and the ultimate structure of the fibrin network. Relative to pure fibrin hydrogel, the incorporation of BSP and OBSP enhanced water swelling and retention, and decelerated the degradation of hydrogels in PBS. Furthermore, BSP and OBSP augmented the antioxidant, antibacterial, and anti-inflammatory properties of fibrin hydrogels, with OBSP demonstrating superior performance in these aspects. Through the development of a murine wound model, it was observed that the wound healing efficacy of hydrogels incorporating BSP and OBSP surpassed that of the pure fibrin group. Notably, the hydrogel formulated with 25 mg/mL OBSP exhibited the most pronounced therapeutic effect, achieving a healing rate approaching 100 %. Consequently, fibrin-OBSP composite hydrogels demonstrate significant potential as wound dressings.
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Affiliation(s)
- Kun Wang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Wei Li
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Jintao Wu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Zhaolan Yan
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Hui Li
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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2
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Jian T, Wang M, Hettige J, Li Y, Wang L, Gao R, Yang W, Zheng R, Zhong S, Baer MD, Noy A, De Yoreo JJ, Cai J, Chen CL. Self-Assembling and Pore-Forming Peptoids as Antimicrobial Biomaterials. ACS NANO 2024; 18:23077-23089. [PMID: 39146502 DOI: 10.1021/acsnano.4c05250] [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: 08/17/2024]
Abstract
Bacterial infections have been a serious threat to mankind throughout history. Natural antimicrobial peptides (AMPs) and their membrane disruption mechanism have generated immense interest in the design and development of synthetic mimetics that could overcome the intrinsic drawbacks of AMPs, such as their susceptibility to proteolytic degradation and low bioavailability. Herein, by exploiting the self-assembly and pore-forming capabilities of sequence-defined peptoids, we discovered a family of low-molecular weight peptoid antibiotics that exhibit excellent broad-spectrum activity and high selectivity toward a panel of clinically significant Gram-positive and Gram-negative bacterial strains, including vancomycin-resistant Enterococcus faecalis (VREF), methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant Staphylococcus epidermidis (MRSE), Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae. Tuning the peptoid side chain chemistry and structure enabled us to tune the efficacy of antimicrobial activity. Mechanistic studies using transmission electron microscopy (TEM), bacterial membrane depolarization and lysis, and time-kill kinetics assays along with molecular dynamics simulations reveal that these peptoids kill both Gram-positive and Gram-negative bacteria through a membrane disruption mechanism. These robust and biocompatible peptoid-based antibiotics can provide a valuable tool for combating emerging drug resistance.
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Affiliation(s)
- Tengyue Jian
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Minghui Wang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Jeevapani Hettige
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yuhao Li
- Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Lei Wang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Wenchao Yang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Renyu Zheng
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Shengliang Zhong
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Marcel D Baer
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Aleksandr Noy
- Materials Science Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
- School of Natural Sciences, University of California, Merced, Merced, California 95343, United States
| | - James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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3
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Alzahrani HA. Quinoline-2-one derivatives as promising antibacterial agents against multidrug-resistant Gram-positive bacterial strains. Braz J Microbiol 2023; 54:2799-2805. [PMID: 37831330 PMCID: PMC10689604 DOI: 10.1007/s42770-023-01132-w] [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: 03/15/2023] [Accepted: 09/15/2023] [Indexed: 10/14/2023] Open
Abstract
This study describes the discovery of a variety of quinoline2-one derivatives with significant antibacterial action vs a spectrum of multidrug-resistant Gram-positive bacterial strains, especially methicillin-resistant Staphylococcus aureus (MRSA). Compounds 6c, 6l, and 6o exhibited significant antibacterial activity versus the Gram-positive bacterial pathogens evaluated. In comparison to the reference daptomycin, compound 6c demonstrated the most effective activity among the assessed derivatives, with MIC concentrations of 0.75 μg/mL versus MRSA and VRE and 2.50 μg/mL against MRSE. We also reported on these compounds' biofilm and dihydrofolate reductase inhibitory activities. Compound 6c showed the greatest antibiofilm action in a dose-dependent way and a substantial decrease of biofilm development in the MRSA ACL51 strain at concentrations of 0.5, 0.25, and 0.12 MIC, with reductions of 79%, 55%, and 38%, consecutively, whereas the corresponding values for vancomycin were 20%, 12%, and 9%. These findings imply that these quinoline compounds could be used to develop a new category of antibiotic representatives to prevent Gram-positive drug-resistant bacterial strains.
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Affiliation(s)
- Hayat Ali Alzahrani
- Medical Laboratory Technology Department, Applied Medical Science College, Northern Border University, Arar, Saudi Arabia.
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4
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Liang Y, Huang Z, Shen X, Zhang Y, Chai Y, Jiang K, Chen Q, Zhao F. Global Trends in Research of Antimicrobial Peptides for the Treatment of Drug-Resistant Bacteria from 1995 to 2021: A Bibliometric Analysis. Infect Drug Resist 2023; 16:4789-4806. [PMID: 37520454 PMCID: PMC10377575 DOI: 10.2147/idr.s411222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 06/01/2023] [Indexed: 08/01/2023] Open
Abstract
Background Antimicrobial peptides (AMPs) can act on the bacterial cell membrane to play an antibacterial role in types of drug-resistant bacteria. Therefore, AMPs have attracted more and more attention in the treatment of drug-resistant bacteria. Methods Bibliometric analysis was employed to sort out the development and trends in the research of AMPs in the treatment of drug-resistant bacteria and map the knowledge structure for scholars. Results Since 2010, the publications and citations in this field have exploded, indicating a growing global interest in the field of AMPs for the treatment of drug-resistant bacteria. And as major countries in this field, China and the USA had conducted very in-depth exchanges and cooperation, which had injected a steady stream of impetus into this field. Both old and new scholars have made efforts, and related fields have developed rapidly, especially in the synthesis and improvement of novel AMPs. In recent years, research directions in the field of AMPs for the treatment of drug-resistant bacteria gradually focused on the practical application, optimization of drug delivery mode, optimization of synthesis mode, screening of new AMPs and other fields, indicating that the relevant research results of AMPs for the treatment of drug-resistant bacteria had entered the actual clinical stage, with higher practical significance. Conclusion The research history, global research status, future research hotspots, and trends of the research of AMPs in the treatment of drug-resistant bacteria were discussed in depth in this study, which can provide research references and inspiration for researchers inside and outside the related field.
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Affiliation(s)
- Yuelong Liang
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Zhengze Huang
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Xuqiu Shen
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Yiyin Zhang
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Yihan Chai
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Kexin Jiang
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
| | - Qi Chen
- Department of General Surgery, Hangzhou Fuyang Hospital of Traditional Chinese Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Feng Zhao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China
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5
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Lu Y, Guan T, Wang S, Zhou C, Wang M, Wang X, Zhang K, Han X, Lin J, Tang Q, Wang C, Zhou W. Novel xanthone antibacterials: Semi-synthesis, biological evaluation, and the action mechanisms. Bioorg Med Chem 2023; 83:117232. [PMID: 36940608 DOI: 10.1016/j.bmc.2023.117232] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
α-Mangostin (α-MG) has demonstrated to display potent activities against Gram-positive bacterial. However, the contribution of phenolic hydroxyl groups of α-MG to the antibacterial activity remains obscure, severely hampering selection of structure modification to develop more potential α-MG-based anti-bacterial derivatives. Herein, twenty-one α-MG derivatives are designed, synthesized and evaluated for the antibacterial activities. The structure activity relationships (SARs) reveal that the contribution of the phenolic groups ranks as C3 > C6 > C1, and the phenolic hydroxyl group at C3 is essential to the antibacterial activity. Of note, compared to the parent compound α-MG, 10a with one acetyl at C1 exhibits the higher safety profiles due to its higher selectivity and no hemolysis, and the more potent antibacterial efficacy in an animal skin abscess model. Our evidences further present that, in comparison with α-MG, 10a has a stronger ability in depolarizing membrane potentials and leads to more leakage of bacterial proteins, consistent with the results observed by transmission electron microscopy (TEM). Transcriptomics analysis demonstrates those observations possibly relate to disturbed synthesis of proteins participating in the biological process of membrane permeability and integrity. Collectively, our findings provide a valuable insight for developing α-MG-based antibacterial agents with little hemolysis and new action mechanism via structural modifications at C1.
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Affiliation(s)
- Yan Lu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074 Wuhan, China
| | - Ting Guan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, E. 232, University town, Waihuan Rd, Panyu, Guangzhou 510006, Guangdong, China
| | - Shaobing Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074 Wuhan, China
| | - Cui Zhou
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Meizhu Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Xiaoyang Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Keyu Zhang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China
| | - Jinchao Lin
- Metabo-Profile Biotechnology (Shanghai) Co. Ltd., 201315 Shanghai, China
| | - Qun Tang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Chunmei Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Wen Zhou
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, China; Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
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6
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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: 11] [Impact Index Per Article: 11.0] [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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7
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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: 16] [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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8
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Blovský T, Šindelka K, Limpouchová Z, Procházka K. Changes in Ion Concentrations upon the Binding of Short Polyelectrolytes on Phospholipid Bilayers: Computer Study Addressing Interesting Physiological Consequences. Polymers (Basel) 2022; 14:polym14173634. [PMID: 36080710 PMCID: PMC9459791 DOI: 10.3390/polym14173634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
This computer study was inspired by the experimental observation of Y. Qian et al. published in ACS Applied Materials and Interfaces, 2018 that the short positively charged β-peptide chains and their oligomeric analogues efficiently suppress severe medical problems caused by antimicrobial drug-resistant bacteria despite them not penetrating the bacterial membrane. Our coarse-grained molecular dynamics (dissipative particle dynamics) simulations confirm the tentative explanation of the authors of the experimental study that the potent antimicrobial activity is a result of the entropically driven release of divalent ions (mainly magnesium ions essential for the proper biological function of bacteria) into bulk solution upon the electrostatic binding of β-peptides to the bacterial membrane. The study shows that in solutions containing cations Na+, Ca2+ and Mg2+, and anions Cl−, the divalent cations preferentially concentrate close to the membrane and neutralize the negative charge. Upon the addition of positively charged oligomer chains (models of β-peptides and their analogues), the oligomers electrostatically bind to the membrane replacing divalent ions, which are released into bulk solvent. Our simulations indicate that the entropy of small ions (which controls the behavior of synthetic polyelectrolyte solutions) plays an important role in this and also in other similar biologically important systems.
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Affiliation(s)
- Tomáš Blovský
- The Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Karel Šindelka
- Department of Molecular and Mesoscopic Modelling, Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v.v.i., Rozvojová 135/1, Suchdol, 165 02 Prague 6, Czech Republic
| | - Zuzana Limpouchová
- The Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Karel Procházka
- The Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
- Correspondence:
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9
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Kong Q, Li G, Zhang F, Yu T, Chen X, Jiang Q, Wang Y. N-Arylimidazoliums as Highly Selective Biomimetic Antimicrobial Agents. J Med Chem 2022; 65:11309-11321. [PMID: 35930690 DOI: 10.1021/acs.jmedchem.2c00818] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Antibiotic resistance has become one of the greatest health threats in the world. In this study, a charge-dispersed dimerization strategy is described for the antimicrobial peptide (AMP) mimics via a tunable cationic charge to improve the selectivity between prokaryotic microbes and eukaryotic cells. This strategy is demonstrated with a series of charge-dispersed AMP mimics based on N-arylimidazolium skeletons. These N-arylimidazolium AMP mimics show potent antibacterial activity against strains along with a low rate of drug resistance, good hemocompatibility, and low cytotoxicity. In addition to the elimination of planktonic bacteria, N-arylimidazolium AMP mimics can also inhibit biofilm formation and destroy the established biofilm. More importantly, methicillin-resistant Staphylococcus aureus (MRSA)-induced lung-infected mice can be effectively treated by the intravenous administration of N-arylimidazolium AMP mimic, which enable the design of N-arylimidazolium AMP mimics to offer an alternative avenue to eradicate drug-resistant bacterial infection.
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Affiliation(s)
- Qunshou Kong
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Gaocan Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Fanjun Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Tao Yu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Xiaotong Chen
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Qing Jiang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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10
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Wang Y, Wu P, Liu F, Chen J, Xue J, Qin Y, Chen F, Wang S, Ji L. Design, synthesis, and biological evaluation of membrane-active honokiol derivatives as potent antibacterial agents. Eur J Med Chem 2022; 240:114593. [PMID: 35820350 DOI: 10.1016/j.ejmech.2022.114593] [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: 04/17/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 11/19/2022]
Abstract
Infections caused by drug-resistant bacteria have emerged to be one of the greatest threats to global public health, and new antimicrobial agents with novel mechanisms of action hence are in an urgent need to combat bacterial resistance. Herein, we reported the design, synthesis, and antibacterial evaluation of novel honokiol derivatives as mimics of antimicrobial peptides (AMPs). These mimics showed potent antimicrobial properties against Gram-positive bacteria. Among them, the most promising compound 13b exhibited excellent antibacterial activity, rapid bactericidal properties, avoidance of antibiotic resistance, and weak hemolytic and cytotoxic activities. In addition, compound 13b not only inhibited the biofilm formation but also destroy the preformed biofilm. Mechanism studies further revealed that compound 13b killed bacteria rapidly by interrupting the bacterial membrane. More intriguingly, compound 13b exhibited potent in vivo antibacterial efficacy in a mouse septicemia model induced by Staphylococcus aureus ATCC43300. These results highlight the potential of 13b to be used as therapeutic agents.
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Affiliation(s)
- Yinhu Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
| | - Ping Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Fangquan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Junjie Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Jie Xue
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Yinhui Qin
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Fang Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Shuo Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
| | - Lusha Ji
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China.
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11
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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: 11] [Impact Index Per Article: 5.5] [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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12
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Membrane-active amino acid-coupled polyetheramine derivatives with high selectivity and broad-spectrum antibacterial activity. Acta Biomater 2022; 142:136-148. [PMID: 35158080 DOI: 10.1016/j.actbio.2022.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 11/21/2022]
Abstract
Membrane active antimicrobial peptide mimics have been considered as promising alternatives to antibiotics, which interact with bacterial cell membranes to combat bacteria and avoid the emergence of multidrug-resistant bacteria. Herein, a series of star-shaped and membrane-active cationic polyetheramides derived from amino acids, were synthesized via condensation of amino acids and polyetheamine (T403). The antibacterial and anti-biofilm activitives as well as the biocompatibility of these amino acids derived polyetheramides (AAPEAs) were investigated in detail. The star-shaped AAPEAs showed high-efficient and broad-spectrum antibacterial activity against the Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species (ESKAPE) pathogens. In addition, the antibacterial activity was significantly affected by the type of amino acid. L-Trp-T403, which was obtained from L-tryptophan and polyetheramine, exhibited the best antibacterial activity with the minimum inhibitory concentration (MIC) of 1 µg/mL against methicillin-resistant S. aureus (MRSA). Time-kill kinetics and multi-passage resistance tests experiments indicated that L-Trp-T403 could rapidly kill bacteria within 1 h. This compound also showed potent antibacterial activity against bacteria over many passages. Moreover, the AAPEAs exhibited outstanding stability and long-term antibacterial activity in complex mammalian body fluids, as well as good biocompatibility, low hemolytic activity, slight toxicity for mammalian cell (L929) and low in vivo toxicity. The antibacterial activity of L-Trp-T403 was found to be based on the disruption of bacterial membranes, which leads to the leakage of the internal cytoplasm. The AAPEAs possessed high antibacterial and anti-biofilm activity, thus, they are promising to be used as long-term and biofilm-disrupting antimicrobial agents. STATEMENT OF SIGNIFICANCE: The growing epidemic of MDR-bacteria is becoming a severe public health threat. Here, a series of amino acids derived polyetheramides (AAPEAs) with a star-shaped polyether amide scaffold was synthesized. The star-shaped AAPEAs displayed broad-spectrum antibacterial activity against Gram-positive, Gram-negative bacteria and drug-resistant bacteria MRSA. Notably, the star-shaped AAPEAs were stable under plasma conditions and showed outstanding stability and long-term antibacterial activity in various complex mammalian fluids. Moreover, these star-shaped AAPEAs not only inhibited the formation of biofilms but also disrupted the established biofilms. Furthermore, the membrane-active AAPEAs eradicated bacteria via the fast membrane lytic mechanism, thus plausibly overcoming the MDR effect. These results demonstrate that membrane-active AAPEAs can serve as emerging long-term and biofilm-disrupting antimicrobial agents to treat biofilm-related infections.
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13
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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: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Pinna C, Martino PA, Meroni G, Sora VM, Tamborini L, Dallavalle S, Contente ML, Pinto A. Biocatalyzed Synthesis of Vanillamides and Evaluation of Their Antimicrobial Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:223-228. [PMID: 34965127 DOI: 10.1021/acs.jafc.1c06213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A series of vanillamides were easily synthesized, exploiting an acyltransferase from Mycobacterium smegmatis (MsAcT). After their evaluation as antimicrobial agents against a panel of Gram-positive and Gram-negative bacteria, three compounds were demonstrated to be 9-fold more effective toward Pseudomonas aeruginosa than the vanillic acid precursor. Taking into consideration the scarce permeability of the Gram-negative bacteria cell envelope when compared to Gram-positive strains or yeasts, these molecules can be considered the basis for the generation of new nature-inspired antimicrobials. To increase the process productivity and avoid any problem related to the poor water solubility of the starting material, a tailored flow biocatalyzed strategy in pure toluene was set up. While a robust immobilization protocol exploiting glyoxyl-agarose was employed to increase the stability of MsAcT, in-line work-up procedures were added downstream the process to enhance the system automation and reduce the overall costs.
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Affiliation(s)
- Cecilia Pinna
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
| | - Piera Anna Martino
- Department of Biomedical, Surgical and Dental Sciences (DSBCO), One Health Unit, University of Milan, via Pascal 36, 20133 Milan, Italy
| | - Gabriele Meroni
- Department of Biomedical, Surgical and Dental Sciences (DSBCO), One Health Unit, University of Milan, via Pascal 36, 20133 Milan, Italy
| | - Valerio Massimo Sora
- Department of Biomedical, Surgical and Dental Sciences (DSBCO), One Health Unit, University of Milan, via Pascal 36, 20133 Milan, Italy
| | - Lucia Tamborini
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, via Mangiagalli 25, 20133 Milan, Italy
| | - Sabrina Dallavalle
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
| | - Martina L Contente
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
| | - Andrea Pinto
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, 20133 Milan, Italy
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15
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Daison FA, Kumar N, Balakrishnan S, Venugopal K, Elango S, Sokkar P. Molecular Dynamics Studies on the Bacterial Membrane Pore Formation by Small Molecule Antimicrobial Agents. J Chem Inf Model 2021; 62:40-48. [PMID: 34932333 DOI: 10.1021/acs.jcim.1c01049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Antimicrobial peptides (AMPs) act on the membrane bilayer of pathogens, causing leakage in the membrane and cell death. Amphiphilic kaempferol derivatives possessing basic functional groups show excellent antibacterial activities, which has been proven through experimental techniques. These compounds are known to target negatively charged bacterial membranes. However, the detailed mechanism of action and their structure-activity relationship are not clear. In this work, we reported theoretical investigation on the mechanism of action of two previously reported kaempferol derivatives on a DMPC/DMPG mixed bilayer. Despite the rigid structure of the compounds when compared to AMPs, spontaneous pore formation in the membrane was not observed in 400 ns molecular dynamics (MD) simulations. MD simulations with biasing forces resulted in the formation of pores in the bilayer for the derivatives and not for kaempferol. The stability of the pores was assessed by pore closure timescales in unbiased MD simulations, which was found to be 5.3 and 17.0 ns for 2 and 3, respectively. Free energy change for the permeation into the bilayer for kaempferol (1), tertiary amine derivative (2), and arginine derivative (3) was calculated to be -1.5, -48.2, and -100.3 kJ/mol, respectively, which correlate with their antibacterial activity. Furthermore, our results indicate that compound 3 forms a stable toroidal pore in the membrane when multiple molecules are oriented in a transmembrane configuration. Our work sheds light on the mechanism of action of small molecule antimicrobial agents, which can be exploited for the rational design of drug candidates.
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Affiliation(s)
- Felsis Angelene Daison
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Nitheeshkumar Kumar
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Siranjeevi Balakrishnan
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Kavyashree Venugopal
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Sangamithra Elango
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Pandian Sokkar
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
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16
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Zhong R, Li H, Li H, Fang S, Liu J, Chen Y, Liu S, Lin S. Development of Amphiphilic Coumarin Derivatives as Membrane-Active Antimicrobial Agents with Potent In Vivo Efficacy against Gram-Positive Pathogenic Bacteria. ACS Infect Dis 2021; 7:2864-2875. [PMID: 34505771 DOI: 10.1021/acsinfecdis.1c00246] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Increases in drug-resistant pathogens are becoming a serious detriment to human health. To combat pathogen infections, a new series of amphiphilic coumarin derivatives were designed and synthesized as antimicrobial agents with membrane-targeting action. We herein report a lead compound, 25, that displayed potent antibacterial activity against Gram-positive bacteria, including MRSA. Compound 25 exhibited weak hemolytic activity and low toxicity to mammalian cells and can kill Gram-positive bacteria quickly (within 0.5 h) by directly disrupting the bacterial cell membranes. Additionally, compound 25 demonstrated excellent efficacy in a murine corneal infection caused by Staphylococcus aureus. These results suggest that 25 has great potential to be a potent antimicrobial agent for treating drug-resistant Gram-positive bacterial infections.
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Affiliation(s)
- Rongcui Zhong
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Sixth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P. R. China
| | - Haizhou Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Sixth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P. R. China
| | - Hongxia Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Sixth 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 Sixth 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 Sixth 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 Sixth 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 Sixth 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 Sixth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P. R. China
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17
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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: 2.0] [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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18
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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: 109] [Impact Index Per Article: 36.3] [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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19
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Li Y, Lin X, Hu J, Shuai J, Wei Y, He D. Synthesis and biological evaluation of stilbene-based peptoid mimics against the phytopathogenic bacterium Xanthomonas citri pv. citri. PEST MANAGEMENT SCIENCE 2021; 77:343-353. [PMID: 32741107 DOI: 10.1002/ps.6024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/26/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The emergence of drug-resistant phytopathogenic bacteria and the need for new types of biological disease-control agents have accelerated efforts toward searching for alternative candidates with a low propensity for resistance development. In this study, a new series of stilbene-based peptoid mimics were synthesized, and their biological activities were evaluated against citrus pathogenic bacteria in vitro and in vivo. RESULTS Antibacterial bioassay results showed that the dicationic peptoid mimics 9a and 9b displayed excellent bioactivity against Xanthomonas citri pv. citri, with the minimum inhibitory concentration values of 25 μM, which were superior to those of commercial copper biocides Delite (200 μM) and Kasumin Bordeaux (100 μM). In vivo bioassay further confirmed their control efficacy against plant bacterial diseases. In addition, the antibacterial mechanism of action elucidated their membrane-disruption effects resulting in the leakage of the bacterial membranes, which was similar to that of antimicrobial peptides. Moreover, the inhibition effect on biofilm formation of peptoid mimics has also been demonstrated. CONCLUSION Stilbene-based peptoid mimics synthesized in this study showed promising antibacterial activity with a potent membrane-disruptive mechanism. The results suggested that stilbene-based peptoid mimics have the potential as a candidate new type of bactericide for citrus disease protection.
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Affiliation(s)
- Yan Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Xingdong Lin
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jianqing Hu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jianbo Shuai
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yinan Wei
- Department of Chemistry, College of Arts and Sciences, University of Kentucky, Lexington, Kentucky, 40506, USA
| | - Daohang He
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
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20
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Wang M, Gao R, Zheng M, Sang P, Li C, Zhang E, Li Q, Cai J. Development of Bis-cyclic Imidazolidine-4-one Derivatives as Potent Antibacterial Agents. J Med Chem 2020; 63:15591-15602. [DOI: 10.1021/acs.jmedchem.0c00171] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Minghui Wang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Mengmeng Zheng
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Chunpu Li
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - En Zhang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
- School of Pharmaceutical Sciences, Institute of Drug Discovery and Development, Key Laboratory of Advanced Pharmaceutical Technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, PR China
| | - Qi Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, Florida 33620, United States
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21
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Wang M, Gao R, Sang P, Odom T, Zheng M, Shi Y, Xu H, Cao C, Cai J. Dimeric γ-AApeptides With Potent and Selective Antibacterial Activity. Front Chem 2020; 8:441. [PMID: 32596202 PMCID: PMC7304243 DOI: 10.3389/fchem.2020.00441] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 04/27/2020] [Indexed: 12/30/2022] Open
Abstract
Over the past few decades, the emergence of antibiotic resistance developed by life-threatening bacteria has become increasingly prevalent. Thus, there is an urgent demand to develop novel antibiotics capable of mitigating this trend. Herein, we report a series of dimeric γ-AApeptide derivatives as potential antibiotic agents with limited toxicity and excellent selectivity against Gram-positive strains. Among them, compound 2 was identified to have the best MICs without inducing drug resistance, even after exposure to MRSA for 20 passages. Time-kill kinetics and mechanistic studies suggested that 2 could mimic host-defense peptides (HDPs) and rapidly eradicate MRSA within 2 hours through disturbing the bacteria membrane. Meanwhile, biofilm formation was successfully inhibited even at a low concentration. Taken together, these results suggested the great potential of dimeric γ-AApeptide derivatives as antibacterial agents.
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Affiliation(s)
- Minghui Wang
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Timothy Odom
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Mengmeng Zheng
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Yan Shi
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Hai Xu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, China
| | - Chuanhai Cao
- College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, United States
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22
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Zhou M, Zheng M, Cai J. Small Molecules with Membrane-Active Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21292-21299. [PMID: 31944092 DOI: 10.1021/acsami.9b20161] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This spotlight on application provides a brief overview of our research exploration, focusing on the research of small molecules with membrane-active antibacterial activity that mimic host-defense peptides (HDPs). The development of antimicrobial HDP agents is an emerging research area as they circumvent the potential disadvantages of HDPs. The small molecules are preferable for development due to their low production cost and potential of more practical applications. In recent years, we conducted research on the design of antibacterial agents based on small molecules including hydantoins, acylated reduced amides, biscyclic guanidines, and dimeric alkylamides of lysines. We herein sketch our journey on the exploration of the antimicrobial activity of these few classes of molecules and hopefully share our insight in the future design of small-molecular-weight antibiotic agents with membrane-active activity that mimic HDPs.
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Affiliation(s)
- Mi Zhou
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Mengmeng Zheng
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
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23
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Wang M, Odom T, Cai J. Challenges in the development of next-generation antibiotics: opportunities of small molecules mimicking mode of action of host-defense peptides. Expert Opin Ther Pat 2020; 30:303-305. [PMID: 32149532 PMCID: PMC10523338 DOI: 10.1080/13543776.2020.1740683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/06/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Minghui Wang
- Department of Chemistry, University of South Florida, Tampa, Florida, USA
| | - Timothy Odom
- Department of Chemistry, University of South Florida, Tampa, Florida, USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida, USA
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24
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Bolarinwa O, Li C, Khadka N, Li Q, Wang Y, Pan J, Cai J. γ-AApeptides-based Small Molecule Ligands That Disaggregate Human Islet Amyloid Polypeptide. Sci Rep 2020; 10:95. [PMID: 31919432 PMCID: PMC6952368 DOI: 10.1038/s41598-019-56500-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/26/2019] [Indexed: 01/21/2023] Open
Abstract
The abnormal folding and aggregation of functional proteins into amyloid is a typical feature of many age-related diseases, including Type II diabetes. Growing evidence has revealed that the prevention of aggregate formation in culprit proteins could retard the progression of amyloid diseases. Human Amylin, also known as human islet amyloid polypeptide (hIAPP), is the major factor for categorizing Type II diabetes as an amyloid disease. Specifically, hIAPP has a great aggregation potential, which always results in a lethal situation for the pancreas. Many peptide inhibitors have been constructed from the various segments of the full-length hIAPP peptide; however, only a few have their origin from the screening of combinatorial peptidomimetic library. In this study, based on HW-155, which was previously discovered from a one-bead-one compound (OBOC) library to inhibit Aβ40 aggregation, we investigated eight (8) analogues and evaluated their amyloid-prevention capabilities for inhibiting fibrillization of hIAPP. Characterization studies revealed that all analogues of HW-155, as well as HW-155, were effective inhibitors of the fibril formation by hIAPP.
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Affiliation(s)
- Olapeju Bolarinwa
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida, 33620, United States
| | - Chunpu Li
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida, 33620, United States
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Nawal Khadka
- Department of Physics, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida, 33620, United States
| | - Qi Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Yan Wang
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Jianjun Pan
- Department of Physics, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida, 33620, United States.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida, 33620, United States.
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25
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Singh S, Wang M, Gao R, Teng P, Odom T, Zhang E, Xu H, Cai J. Lipidated α/Sulfono-α-AA heterogeneous peptides as antimicrobial agents for MRSA. Bioorg Med Chem 2020; 28:115241. [PMID: 31812324 PMCID: PMC10523340 DOI: 10.1016/j.bmc.2019.115241] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/20/2019] [Accepted: 11/25/2019] [Indexed: 12/27/2022]
Abstract
Though antibiotics have been used for decades to treat bacterial infections, there is a great need for new treatment methods. Bacteria are becoming resistant to conventional antibiotics, as is the case with Methicillin resistant Staphylococcus aureus (MRSA). Herein we report the design of a series of lipidated α/Sulfono-α-AA heterogeneous peptides as mimics for Host Defense Peptides (HDPs). Utilizing fluorescence microscopy and depolarization techniques, our compounds demonstrate the ability to kill Gram-positive bacteria through cell membrane disruption. This mechanism of action makes it difficult for bacteria to develop resistance. Further time kill studies and hemolytic assays have also proven these compounds to be efficient in their ability to eradicate bacteria cells while remaining non-toxic to human red blood cells. This new class of peptidomimetics shows promise for the future antibiotic treatment of MRSA.
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Affiliation(s)
- Sylvia Singh
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States
| | - Minghui Wang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States
| | - Peng Teng
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States
| | - Timothy Odom
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States
| | - En Zhang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States; School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Hai Xu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States.
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26
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Zhang N, Ma S. Recent development of membrane-active molecules as antibacterial agents. Eur J Med Chem 2019; 184:111743. [DOI: 10.1016/j.ejmech.2019.111743] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/09/2019] [Accepted: 09/26/2019] [Indexed: 12/13/2022]
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Antimicrobial activity of amphipathic α,α-disubstituted β-amino amide derivatives against ESBL - CARBA producing multi-resistant bacteria; effect of halogenation, lipophilicity and cationic character. Eur J Med Chem 2019; 183:111671. [PMID: 31536892 DOI: 10.1016/j.ejmech.2019.111671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/27/2019] [Accepted: 08/30/2019] [Indexed: 02/06/2023]
Abstract
The rapid emergence and spread of multi-resistant bacteria have created an urgent need for new antimicrobial agents. We report here a series of amphipathic α,α-disubstituted β-amino amide derivatives with activity against 30 multi-resistant clinical isolates of Gram-positive and Gram-negative bacteria, including isolates with extended spectrum β-lactamase - carbapenemase (ESBL-CARBA) production. A variety of halogenated aromatic side-chains were investigated to improve antimicrobial potency and minimize formation of Phase I metabolites. Net positive charge and cationic character of the derivatives had an important effect on toxicity against human cell lines. The most potent and selective derivative was the diguanidine derivative 4e with 3,5-di-brominated benzylic side-chains. Derivative 4e displayed minimum inhibitory concentrations (MIC) of 0.25-8 μg/mL against Gram-positive and Gram-negative reference strains, and 2-32 μg/mL against multi-resistant clinical isolates. Derivative 4e showed also low toxicity against human red blood cells (EC50 > 200 μg/mL), human hepatocyte carcinoma cells (HepG2: EC50 > 64 μg/mL), and human lung fibroblast cells (MRC-5: EC50 > 64 μg/mL). The broad-spectrum antimicrobial activity and low toxicity of diguanylated derivatives such as 4e make them attractive as lead compounds for development of novel antimicrobial drugs.
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Kuppusamy R, Willcox M, Black DS, Kumar N. Short Cationic Peptidomimetic Antimicrobials. Antibiotics (Basel) 2019; 8:antibiotics8020044. [PMID: 31003540 PMCID: PMC6628222 DOI: 10.3390/antibiotics8020044] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 12/28/2022] Open
Abstract
The rapid growth of antimicrobial resistance against several frontline antibiotics has encouraged scientists worldwide to develop new alternatives with unique mechanisms of action. Antimicrobial peptides (AMPs) have attracted considerable interest due to their rapid killing and broad-spectrum activity. Peptidomimetics overcome some of the obstacles of AMPs such as high cost of synthesis, short half-life in vivo due to their susceptibility to proteolytic degradation, and issues with toxicity. This review will examine the development of short cationic peptidomimetics as antimicrobials.
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Affiliation(s)
- Rajesh Kuppusamy
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Mark Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia.
| | - David StC Black
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Naresh Kumar
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
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Kuppusamy R, Yasir M, Yee E, Willcox M, Black DS, Kumar N. Guanidine functionalized anthranilamides as effective antibacterials with biofilm disruption activity. Org Biomol Chem 2019; 16:5871-5888. [PMID: 30070287 DOI: 10.1039/c8ob01699b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We describe a library of amphiphilic anthranilamide compounds as antimicrobial peptide (AMP) mimics. These contain a hydrophobic naphthoyl side chain and different hydrophilic cationic groups such as amino, quaternary ammonium and guanidino groups. These are prepared via the ring-opening of different isatoic anhydrides. The antibacterial activity against S. aureus and E. coli of compounds containing guanidino cationic groups was greater than that for amino and quaternary ammonium cationic groups. The fluoro-substituted guanidinium compound 9b showed a minimum inhibitory concentration (MIC) of 2.0 μM against S. aureus, and reduced established biofilms of S. aureus by 92% at 64 μM concentration. The bromo-substituted guanidinium compound 9d exhibited good MIC against S. aureus (3.9 μM) and E. coli (15.6 μM) and disrupted established biofilms of S. aureus by 83% at 62.4 μM concentration. Cytoplasmic membrane permeability studies suggested that depolarization and disruption of the bacterial cell membrane could be a possible mechanism for antibacterial activity and the in vitro toxicity studies against MRC-5 human lung fibroblast cells showed that the potent compounds are non-toxic against mammalian cells.
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Affiliation(s)
- Rajesh Kuppusamy
- School of Chemistry, UNSW Australia, Sydney, NSW 2052, Australia.
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Chen H, Du K, Sun YJ, Hao ZY, Zhang YL, Bai J, Wang QH, Hu HY, Feng WS. Solanrubiellin A, a hydroanthraquinone dimer with antibacterial and cytotoxic activity from Solanum lyratum. Nat Prod Res 2019; 34:3176-3181. [DOI: 10.1080/14786419.2018.1553173] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hui Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Kun Du
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yan-Jun Sun
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Zhi-You Hao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yan-Li Zhang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jiang Bai
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Scineces and Perking Union Medical College, Beijing, China
| | - Qing-Hua Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Scineces and Perking Union Medical College, Beijing, China
| | - Hai-Yu Hu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Scineces and Perking Union Medical College, Beijing, China
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Respiratory Disease Diagnosis, Treatment & Chinese Medicine Development of Henan Province, Henan University of Chinese Medicine, Zhengzhou, China
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Gide M, Nimmagadda A, Su M, Wang M, Teng P, Li C, Gao R, Xu H, Li Q, Cai J. Nano-Sized Lipidated Dendrimers as Potent and Broad-Spectrum Antibacterial Agents. Macromol Rapid Commun 2018; 39:e1800622. [PMID: 30408252 DOI: 10.1002/marc.201800622] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/06/2018] [Indexed: 12/18/2022]
Abstract
There is considerable interest in the development of antimicrobial polymers including dendrimers due to the ease of synthesis and low manufacturing cost compared to host defense peptides (HDPs). Herein, a new class of nanomaterials-lipidated amphiphilic dendrimers-is presented that mimic the antibacterial mechanism of HDPs by compromising bacterial cell membranes. Unlike conventional dendrimers that are prepared generation by generation symmetrically with molecular weight distribution, these lipidated dendrimers are prepared on the solid phase with a hanging lipid tail and precisely controlled structure. It is shown through rational design that these lipidated dendrimers display potent and selective antimicrobial activity against both Gram-positive and Gram-negative bacteria, including multidrug-resistant strains. In addition to antibacterial activity against planktonic bacteria, these dendrimers are also shown to inhibit bacterial biofilms effectively. This class of dendrimers as a new class of biomaterials may lead to a useful generation of antibiotic agents with practical applications.
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Affiliation(s)
- Mussie Gide
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Alekhya Nimmagadda
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Ma Su
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Minghui Wang
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Peng Teng
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Chunpu Li
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA.,Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Ruixuan Gao
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
| | - Hai Xu
- College of Chemistry and Chemical Engineering, Central South University, South Lushan Road, Changsha, Hunan, 410083, P. R. China
| | - Qi Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Jianfeng Cai
- M. Gide, Dr. A. Nimmagadda, M. Su, M. Wang, Dr. P. Teng, C. Li, R. Gao, Dr. J. Cai, Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, USA
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32
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Das T, Das MC, Das A, Bhowmik S, Sandhu P, Akhter Y, Bhattacharjee S, De UC. Modulation of S. aureus and P. aeruginosa biofilm: an in vitro study with new coumarin derivatives. World J Microbiol Biotechnol 2018; 34:170. [PMID: 30406882 DOI: 10.1007/s11274-018-2545-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 10/20/2018] [Indexed: 02/07/2023]
Abstract
Coumarin is an important heterocyclic molecular framework of bioactive molecules against broad spectrum pathological manifestations. In the present study 18 new coumarin derivatives (CDs) were synthesized and characterized for antibiofilm activity against two model bacteria such as Staphylococcus aureus and Pseudomonas aeruginosa. It was observed that all the CDs executed significant effect in moderating activities against both planktonic and biofilm forms of these selected bacteria. Hence, to interpret the underlying probable reason of such antibiofilm effect, in-silico binding study of CDs with biofilm and motility associated proteins of these organisms were performed. All CDs have shown their propensity for occupying the native substrate binding pocket of each protein with moderate to strong binding affinities. One of the CDs such as CAMN1 showed highest binding affinity with these proteins. Interestingly, the findings of in-silico studies coincides the experimental results of antibiofilm and motility affect of CDs against both S. aureus and P. aeruginosa. Moreover, in-silico studies suggested that the antibiofilm activity of test CDs may be due to the interference of biofilm and motility associated proteins of the selected model organisms (PilT from P. aeruginosa and TarK, TarO from S. aureus). The detailed synthesis, characterization, methodology and results of biological screening along with computational studies have been reported. This study could be of greater interest in the context of the development of new anti-bacterial agent in the future.
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Affiliation(s)
- Tapas Das
- Department of Chemistry, Tripura University, Suryamaninagar, Tripura, 799022, India
| | - Manash C Das
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura, 799022, India
| | - Antu Das
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura, 799022, India
| | - Sukhen Bhowmik
- Department of Chemistry, Tripura University, Suryamaninagar, Tripura, 799022, India
| | - Padmani Sandhu
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh, 176206, India
| | - Yusuf Akhter
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh, 176206, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura, 799022, India.
| | - Utpal Ch De
- Department of Chemistry, Tripura University, Suryamaninagar, Tripura, 799022, India.
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33
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Gomes Von Borowski R, Gnoatto SCB, Macedo AJ, Gillet R. Promising Antibiofilm Activity of Peptidomimetics. Front Microbiol 2018; 9:2157. [PMID: 30271394 PMCID: PMC6146102 DOI: 10.3389/fmicb.2018.02157] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/23/2018] [Indexed: 11/13/2022] Open
Abstract
Pathogenic biofilms are a global health care concern, as they can cause extensive antibiotic resistance, morbidity, mortality, and thereby substantial economic loss. Scientific efforts have been made over the past few decades, but so far there is no effective treatment targeting the bacteria in biofilms. Antimicrobial peptidomimetics have been proposed as promising potential anti-biofilm agents. Indeed, these structurally enhanced molecules can mimic the action of peptides but are not susceptible to proteolysis or immunogenicity, the characteristic limitations of natural peptides. Here, we provide insights into antibiofilm peptidomimetic strategies and molecular targets, and discuss the design of two major peptidomimetics classes: AApeptides (N-acylated-N-aminoethyl-substituted peptides) and peptoids (N-substituted glycine units). In particular, we present details of their structural diversity and discuss the possible improvements that can be implemented in order to develop antibiofilm drug alternatives.
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Affiliation(s)
- Rafael Gomes Von Borowski
- Univ Rennes, CNRS, Institut de Génétique et Développement de Rennes (IGDR), UMR 6290, Rennes, France.,Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Biotechnology Center, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Simone Cristina Baggio Gnoatto
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Biotechnology Center, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Alexandre José Macedo
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Biotechnology Center, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Reynald Gillet
- Univ Rennes, CNRS, Institut de Génétique et Développement de Rennes (IGDR), UMR 6290, Rennes, France
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34
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Monga A, Bagchi S, Sharma A. DABCO-Catalysed Amidation under Assistance of Aerial Oxidation: Access to α-ketoamides. ChemistrySelect 2018. [DOI: 10.1002/slct.201801981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Aparna Monga
- Department of Chemistry; Indian Institute of Technology Roorkee; Indian Institute of Technology Roorkee; Roorkee- 247667
| | - Sourav Bagchi
- Department of Chemistry; Indian Institute of Technology Roorkee; Indian Institute of Technology Roorkee; Roorkee- 247667
| | - Anuj Sharma
- Department of Chemistry; Indian Institute of Technology Roorkee; Indian Institute of Technology Roorkee; Roorkee- 247667
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Bolarinwa O, Cai J. Developments with investigating descriptors for antimicrobial AApeptides and their derivatives. Expert Opin Drug Discov 2018; 13:727-739. [PMID: 29933702 DOI: 10.1080/17460441.2018.1487950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
INTRODUCTION The development of multidrug-resistant strains of bacteria resulting from prolonged treatment with conventional antibiotics has necessitated the need for continuous research for better antibiotic strategies. One of these alternatives is evolutionary antimicrobial peptides also known as host-defense peptides (HDPs). HDPs are an integral part of the innate defense system in multicellular eukaryotes. Although HDPs can largely circumvent the persistent problem of antibiotic resistance due to their bacteriolytic membrane mechanism, they have some drawbacks including a low activity profile and protease instability. AApeptides have recently been introduced as a new class of peptidomimetics with resistance to proteolysis, improved activity profile, and limitless possibilities for structural diversity. Furthermore, they have shown excellent antimicrobial activity. Areas covered: This review updates the reader on the latest developments of antimicrobial AApeptides, the various derivatizations, and their development for antimicrobial applications. The most recent findings on the heterogeneous γ-AA backbone are also outlined. Expert opinion: AApeptides have found diverse applications in antimicrobial studies. AApeptides are believed to exhibit bactericidal properties by imitating the membranolytic action of HDPs. They have shown broad-spectrum antimicrobial activity and are active against medicinally relevant drug-resistant pathogens. AApeptides and their derivatives could gain therapeutic relevance in the design and development of antibiotic agents.
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Affiliation(s)
- Olapeju Bolarinwa
- a Department of Chemistry , University of South Florida , Tampa , FL , USA
| | - Jianfeng Cai
- a Department of Chemistry , University of South Florida , Tampa , FL , USA
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Teng P, Li C, Peng Z, Anne Marie V, Nimmagadda A, Su M, Li Y, Sun X, Cai J. Facilely accessible quinoline derivatives as potent antibacterial agents. Bioorg Med Chem 2018; 26:3573-3579. [PMID: 29858158 DOI: 10.1016/j.bmc.2018.05.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/14/2018] [Accepted: 05/21/2018] [Indexed: 01/22/2023]
Abstract
Quinoline compounds have been extensively explored as anti-malaria and anti-cancer agents for decades and show profound functional bioactivities, however, the studies of these compounds in other medicinal fields have lagged dramatically. In this study, we report the development of a series of facilely accessible quinoline derivatives that display potent antibacterial activity against a panel of multidrug-resistant Gram-positive bacterial strains, especially C. difficile. We also demonstrated that these molecules are effective in vivo against C. difficile. These results revealed that these types of quinoline compounds could serve as prototypes for the development of an appealing class of antibiotic agents used to combat Gram-positive drug-resistant bacterial strains, including C. difficile.
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Affiliation(s)
- Peng Teng
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Chunhui Li
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA; Department of Infection Control Center of Xiangya Hospital, Central South University, Changsha 410008, China
| | - Zhong Peng
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA; State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Vanderschouw Anne Marie
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Alekhya Nimmagadda
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Ma Su
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Yaqiong Li
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Xingmin Sun
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
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Qian Y, Qi F, Chen Q, Zhang Q, Qiao Z, Zhang S, Wei T, Yu Q, Yu S, Mao Z, Gao C, Ding Y, Cheng Y, Jin C, Xie H, Liu R. Surface Modified with a Host Defense Peptide-Mimicking β-Peptide Polymer Kills Bacteria on Contact with High Efficacy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15395-15400. [PMID: 29688003 DOI: 10.1021/acsami.8b01117] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) has been one of the major nosocomial pathogens to cause frequent and serious infections that are associated with various biomedical surfaces. This study demonstrated that surface modified with host defense peptide-mimicking β-peptide polymer, has surprisingly high bactericidal activities against Escherichia coli ( E. coli) and MRSA. As surface-tethered β-peptide polymers cannot move freely to adopt the collaborative interactions with bacterial membrane and are too short to penetrate the cell envelop, we proposed a mode of action by diffusing away the cell membrane-stabilizing divalent ions, Ca2+ and Mg2+. This hypothesis was supported by our study that Ca2+ and Mg2+ supplementation in the assay medium causes up to 80% loss of bacterial killing efficacy and that the addition of divalent ion chelating ethylenediaminetetraacetic acid into the above assay medium leads to significant recovery of the bacterial killing efficacy. In addition to its potent bacterial killing efficacy, the surface-tethered β-peptide polymer also demonstrated excellent biocompatibility by displaying no hemolysis and supporting mammalian cell adhesion and growth. In conclusion, this study demonstrated the potential of β-peptide polymer-modified surface in addressing nosocomial infections that are associated with various surfaces in biomedical applications.
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Affiliation(s)
| | | | | | | | | | | | - Ting Wei
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Qian Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Shan Yu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | | | - Yanyong Cheng
- Department of Anesthesiology , Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , China
| | - Chenyu Jin
- Department of Anesthesiology , Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , China
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38
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Niu Y, Wang M, Cao Y, Nimmagadda A, Hu J, Wu Y, Cai J, Ye XS. Rational Design of Dimeric Lysine N-Alkylamides as Potent and Broad-Spectrum Antibacterial Agents. J Med Chem 2018; 61:2865-2874. [PMID: 29569910 DOI: 10.1021/acs.jmedchem.7b01704] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antibiotic resistance is one of the biggest threats to public health, and new antibacterial agents hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Utilizing dimerization strategy, we rationally designed and efficiently synthesized a new series of small molecule dimeric lysine alkylamides as mimics of AMPs. Evaluation of these mimics against a panel of Gram-positive and Gram-negative bacteria including MDR strains was performed, and a broad-spectrum and potent compound 3d was identified. This compound displayed high specificity toward bacteria over mammalian cell. Time-kill kinetics and mechanistic studies suggest that compound 3d quickly eliminated bacteria in a bactericidal mode by disrupting bacterial cell membrane. In addition, lead compound 3d could inhibit biofilm formation and did not develop drug resistance in S. aureus and E. coli over 14 passages. These results suggested that dimeric lysine nonylamide has immense potential as a new type of novel small molecular agent to combat antibiotic resistance.
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Affiliation(s)
- Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Minghui Wang
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Alekhya Nimmagadda
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Jianxing Hu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Yanfen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Jianfeng Cai
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
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Teng P, Nimmagadda A, Su M, Hong Y, Shen N, Li C, Tsai LY, Cao J, Li Q, Cai J. Novel bis-cyclic guanidines as potent membrane-active antibacterial agents with therapeutic potential. Chem Commun (Camb) 2018; 53:11948-11951. [PMID: 29052670 DOI: 10.1039/c7cc07285f] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We designed a class of small dimeric cyclic guanidine derivatives which display potent antibacterial activity against both multidrug-resistant Gram-negative and Gram-positive bacteria. They could compromise bacterial membranes without developing resistance, inhibit biofilms formed by E. coli, and exhibit excellent in vivo activity in the MRSA-infected thigh burden mouse model.
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Affiliation(s)
- Peng Teng
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
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40
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Su M, Xia D, Teng P, Nimmagadda A, Zhang C, Odom T, Cao A, Hu Y, Cai J. Membrane-Active Hydantoin Derivatives as Antibiotic Agents. J Med Chem 2017; 60:8456-8465. [PMID: 28984451 DOI: 10.1021/acs.jmedchem.7b00847] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hydantoin (imidazolidinedione) derivatives such as nitrofurantoin are small molecules that have aroused considerable interest recently due to their low rate of bacterial resistance. However, their moderate antimicrobial activity may hamper their application combating antibiotic resistance in the long run. Herein, we report the design of bacterial membrane-active hydantoin derivatives, from which we identified compounds that show much more potent antimicrobial activity than nitrofurantoin against a panel of clinically relevant Gram-positive and Gram-negative bacterial strains. These compounds are able to act on bacterial membranes, analogous to natural host-defense peptides. Additionally, these hydantoin compounds not only kill bacterial pathogens rapidly but also prevent the development of methicillin-resistant Staphylococcus aureus (MRSA) bacterial resistance under the tested conditions. More intriguingly, the lead compound exhibited in vivo efficacy that is much superior to vancomycin by eradicating bacteria and suppressing inflammation caused by MRSA-induced pneumonia in a rat model, demonstrating its promising therapeutic potential.
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Affiliation(s)
- Ma Su
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Donglin Xia
- Department of Biomedical Engineering, College of Engineering and Applied Science, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, P. R. China
| | - Peng Teng
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Alekhya Nimmagadda
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Chao Zhang
- Department of Biomedical Engineering, College of Engineering and Applied Science, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, P. R. China
| | - Timothy Odom
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Annie Cao
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
| | - Yong Hu
- Department of Biomedical Engineering, College of Engineering and Applied Science, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, P. R. China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida , 4202 E. Fowler Ave, Tampa, Florida 33620, United States
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Koh JJ, Lin S, Beuerman RW, Liu S. Recent advances in synthetic lipopeptides as anti-microbial agents: designs and synthetic approaches. Amino Acids 2017; 49:1653-1677. [PMID: 28823054 DOI: 10.1007/s00726-017-2476-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 07/31/2017] [Indexed: 12/31/2022]
Abstract
Infectious diseases impose serious public health burdens and continue to be a global public health crisis. The treatment of infections caused by multidrug-resistant pathogens is challenging because only a few viable therapeutic options are clinically available. The emergence and risk of drug-resistant superbugs and the dearth of new classes of antibiotics have drawn increasing awareness that we may return to the pre-antibiotic era. To date, lipopeptides have been received considerable attention because of the following properties: They exhibit potent antimicrobial activities against a broad spectrum of pathogens, rapid bactericidal activity and have a different antimicrobial action compared with most of the conventional antibiotics used today and very slow development of drug resistance tendency. In general, lipopeptides can be structurally classified into two parts: a hydrophilic peptide moiety and a hydrophobic fatty acyl chain. To date, a significant amount of design and synthesis of lipopeptides have been done to improve the therapeutic potential of lipopeptides. This review will present the current knowledge and the recent research in design and synthesis of new lipopeptides and their derivatives in the last 5 years.
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Affiliation(s)
- Jun-Jie Koh
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, Singapore, 169856, Singapore
| | - Shuimu Lin
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, Singapore, 169856, Singapore
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Roger W Beuerman
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, Singapore, 169856, Singapore.
- SRP Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.
| | - Shouping Liu
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, Singapore, 169856, Singapore.
- SRP Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore, 169857, Singapore.
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Lin S, Koh JJ, Aung TT, Sin WLW, Lim F, Wang L, Lakshminarayanan R, Zhou L, Tan DTH, Cao D, Beuerman RW, Ren L, Liu S. Semisynthetic Flavone-Derived Antimicrobials with Therapeutic Potential against Methicillin-ResistantStaphylococcus aureus(MRSA). J Med Chem 2017. [DOI: 10.1021/acs.jmedchem.7b00380] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shuimu Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Jun-Jie Koh
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
| | - Thet Tun Aung
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
| | - Wan Ling Wendy Sin
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
| | - Fanghui Lim
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
| | - Lin Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Rajamani Lakshminarayanan
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- SRP Neuroscience and Behavioral Disorders, Duke−NUS Graduate Medical School, 169857 Singapore, Singapore
| | - Lei Zhou
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- SRP Neuroscience and Behavioral Disorders, Duke−NUS Graduate Medical School, 169857 Singapore, Singapore
| | - Donald T. H. Tan
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- Singapore National Eye Center, 11 Third Hospital Avenue, 168751 Singapore, Singapore
| | - Derong Cao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Roger W. Beuerman
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- SRP Neuroscience and Behavioral Disorders, Duke−NUS Graduate Medical School, 169857 Singapore, Singapore
| | - Li Ren
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Shouping Liu
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856 Singapore, Singapore
- SRP Neuroscience and Behavioral Disorders, Duke−NUS Graduate Medical School, 169857 Singapore, Singapore
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43
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Wang PY, Shao WB, Xue HT, Fang HS, Zhou J, Wu ZB, Song BA, Yang S. Synthesis of novel 1,3,4-oxadiazole derivatives containing diamides as promising antibacterial and antiviral agents. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2980-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Hoque J, Haldar J. Direct Synthesis of Dextran-Based Antibacterial Hydrogels for Extended Release of Biocides and Eradication of Topical Biofilms. ACS APPLIED MATERIALS & INTERFACES 2017; 9:15975-15985. [PMID: 28422484 DOI: 10.1021/acsami.7b03208] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cationic small molecular biocides have been developed as promising antibiofilm agents because of their tunability in chemical structures and their ability to disrupt established biofilms. However, the impact of biocides in antibiofilm treatment is largely limited due to the lack of an effective delivery system that can ensure sustained release of biocides at the target site. Herein we report a biocide-encapsulated antibacterial and antibiofilm hydrogel that acts as an efficient delivery vehicle for the biocide and eradicates matured bacterial biofilm. The hydrogels are prepared using dextran methacrylate (Dex-MA), a biocompatible and photopolymerizable polymer, and a nontoxic cationic biocide with two cationic charges, two nonpeptidic amide bonds, and optimized amphiphilicity, which is capable of eradicating established bacterial biofilms. The gels, prepared via direct loading of the biocide and with highly controllable amounts, display 100% activity against both drug-sensitive and drug-resistant bacteria such as methicillin-resistant Staphylococcus aureus (MRSA). Importantly, the gels are shown to release the biocide and kill bacteria for an extended period of time (until day 5). When being treated with the established bacterial biofilms, the released biocide from the gel is shown to completely eradicate establishedS. aureus, Escherichia coli, and MRSA biofilms, the most common biofilm forming bacteria that cause severe infections (e.g., skin infections, urinary tract infections, etc.) in humans. Moreover, the gels were shown to annihilate preformed MRSA biofilm with >99.99% bacterial reduction under in vitro and in vivo conditions in a superficial MRSA infection model in mice. Notably, when tested, excellent skin compatibility is observed for these materials in various animal models such as a rat model of acute dermal toxicity, guinea pig model of skin sensitization, and rabbit model of skin irritation. The biocompatible antibacterial and antibiofilm hydrogels developed herein thus might be useful in treating bacterial biofilm associated infections, especially topical infections.
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Affiliation(s)
- Jiaul Hoque
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur,Bengaluru 560064, India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur,Bengaluru 560064, India
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45
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Lin S, Koh JJ, Aung TT, Lim F, Li J, Zou H, Wang L, Lakshminarayanan R, Verma C, Wang Y, Tan DTH, Cao D, Beuerman RW, Ren L, Liu S. Symmetrically Substituted Xanthone Amphiphiles Combat Gram-Positive Bacterial Resistance with Enhanced Membrane Selectivity. J Med Chem 2017; 60:1362-1378. [DOI: 10.1021/acs.jmedchem.6b01403] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuimu Lin
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Jun-Jie Koh
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
| | - Thet Tun Aung
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
| | - Fanghui Lim
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
| | - Jianguo Li
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- Bioinformatics Institute (A*STAR), 30
Biopolis Street, 07-01 Matrix, 138671, Singapore
| | - Hanxun Zou
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
| | - Lin Wang
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Rajamani Lakshminarayanan
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- SRP
Neuroscience and Behavioral Disorders, Duke-NUS Graduate Medical School, 169857, Singapore
| | - Chandra Verma
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- Bioinformatics Institute (A*STAR), 30
Biopolis Street, 07-01 Matrix, 138671, Singapore
- School of
Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, 637551, Singapore
- Department
of Biological Sciences, National University of Singapore, 14 Science
Drive 4, 117543, Singapore
| | - Yingjun Wang
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Donald T. H. Tan
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- Singapore National Eye Center, 11 Third Hospital Avenue, 168751, Singapore
| | - Derong Cao
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Roger W. Beuerman
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- SRP
Neuroscience and Behavioral Disorders, Duke-NUS Graduate Medical School, 169857, Singapore
| | - Li Ren
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Shouping Liu
- Singapore
Eye Research Institute, The Academia, 20 College Road, Discovery Tower
Level 6, 169856, Singapore
- SRP
Neuroscience and Behavioral Disorders, Duke-NUS Graduate Medical School, 169857, Singapore
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46
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Khadka NK, Teng P, Cai J, Pan J. Modulation of lipid membrane structural and mechanical properties by a peptidomimetic derived from reduced amide scaffold. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:734-744. [PMID: 28132901 DOI: 10.1016/j.bbamem.2017.01.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 01/22/2017] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
Abstract
Understanding how antimicrobial peptidomimetics interact with lipid membranes is important in battling multidrug resistant bacterial pathogens. We study the effects of a recently reported peptidomimetic on lipid bilayer structural and mechanical properties. The compound referred to as E107-3 is synthesized based on the acylated reduced amide scaffold and has been shown to exhibit good antimicrobial potency. Our vesicle leakage assay indicates that the compound increases lipid bilayer permeability. We use micropipette aspiration to explore the kinetic response of giant unilamellar vesicles (GUVs). Exposure to the compound causes the GUV protrusion length LP to spontaneously increase and then decrease, followed by GUV rupture. Solution atomic force microscopy (AFM) is used to visualize lipid bilayer structural modulation within a nanoscopic regime. Unlike melittin, which produces pore-like structures, the peptidomimetic compound is found to induce nanoscopic heterogeneous structures. Finally, we use AFM-based force spectroscopy to study the impact of the compound on lipid bilayer mechanical properties. We find that incremental addition of the compound to planar lipid bilayers results in a moderate decrease of the bilayer puncture force FP and a 39% decrease of the bilayer area compressibility modulus KA. To explain our experimental data, we propose a membrane interaction model encompassing disruption of lipid chain packing and extraction of lipid molecules. The later action mode is supported by our observation of a double-bilayer structure in the presence of fusogenic calcium ions.
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Affiliation(s)
- Nawal K Khadka
- Department of Physics, University of South Florida, Tampa, FL 33620, United States
| | - Peng Teng
- Department of Chemistry, University of South Florida, Tampa, FL 33620, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL 33620, United States
| | - Jianjun Pan
- Department of Physics, University of South Florida, Tampa, FL 33620, United States.
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47
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Wang B, Huang W, Zhou J, Tang X, Chen Y, Peng C, Han B. Drug design based on pentaerythritol tetranitrate reductase: synthesis and antibacterial activity of Pogostone derivatives. Org Biomol Chem 2017; 15:6548-6556. [DOI: 10.1039/c7ob01429e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We performed molecular docking studies of Pogostone with PETNR and analyzed structure–activity relationships, which guided the structure design and the subsequent facile organocatalytic synthesis of Pogostone derivatives.
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Affiliation(s)
- Biao Wang
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Wei Huang
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Jin Zhou
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Xue Tang
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Yang Chen
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
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48
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Hoque J, Konai MM, Sequeira SS, Samaddar S, Haldar J. Antibacterial and Antibiofilm Activity of Cationic Small Molecules with Spatial Positioning of Hydrophobicity: An in Vitro and in Vivo Evaluation. J Med Chem 2016; 59:10750-10762. [DOI: 10.1021/acs.jmedchem.6b01435] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiaul Hoque
- Chemical Biology and Medicinal
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Mohini M. Konai
- Chemical Biology and Medicinal
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Shanola S. Sequeira
- Chemical Biology and Medicinal
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Sandip Samaddar
- Chemical Biology and Medicinal
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Jayanta Haldar
- Chemical Biology and Medicinal
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
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