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Jin L, Liu H, Wang C, Mao C, Wu S, Zhang Y, Li Z, Zhu S, Jiang H, Cui Z, Zheng Y, Liu X. Interface/Dipole Polarized Antibiotics-Loaded Fe 3O 4/PB Nanoparticles for Non-Invasive Therapy of Osteomyelitis Under Medical Microwave Irradiation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2410917. [PMID: 39344940 DOI: 10.1002/adma.202410917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/12/2024] [Indexed: 10/01/2024]
Abstract
Due to their poor light penetration, photothermal therapy and photodynamic therapy are ineffective in treating deep tissue infections, such as osteomyelitis caused by Staphylococcus aureus (S. aureus). Here, a microwave (MW)-responsive magnetic targeting composite system consisting of ferric oxide (Fe3O4)/Prussian blue (PB) nanoparticles, gentamicin (Gent), and biodegradable poly(lactic-co-glycolic acid) (PLGA) is reported. The PLGA/Fe3O4/PB/Gent complex is used in combination with MW thermal therapy (MTT), MW dynamic therapy (MDT), and chemotherapy (CT) to treat acute osteomyelitis infected with S. aureus-infected. The powerful antibacterial effect of the PLGA/Fe3O4/PB/Gent is determined by the synergistic effects of heat and reactive oxygen species (ROS) generation by the Fe3O4/PB nanoparticles under MW irradiation and the effective release of Gent at the infection site via magnetic targeting. The antibacterial mechanism of the PLGA/Fe3O4/PB/Gent under MW irradiation is analyzed using bacterial transcriptome RNA sequencing. The MW heat and ROS reduce the activity of the protein transporters on the bacterial membrane, along with the transport of various ions and the acceleration of phosphate metabolism, which can lead to increased permeability of the bacterial membrane, damage the ribosome and DNA, and accompany the internal protein efflux of the bacteria, thus effectively killing the bacteria.
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Affiliation(s)
- Liguo Jin
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Hanpeng Liu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Chaofeng Wang
- School of Health Science & Biomedical Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Congyang Mao
- School of Materials Science & Engineering, Biomedical Materials Engineering Research Center, Hubei Key Laboratory of Polymer Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
| | - Shuilin Wu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
- School of Materials Science & Engineering, Biomedical Materials Engineering Research Center, Hubei Key Laboratory of Polymer Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
- School of Materials Science & Engineering, Peking University, Beijing, 100871, China
| | - Yu Zhang
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Zhaoyang Li
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Shengli Zhu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Hui Jiang
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Zhenduo Cui
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Yufeng Zheng
- School of Materials Science & Engineering, Peking University, Beijing, 100871, China
| | - Xiangmei Liu
- School of Health Science & Biomedical Engineering, Hebei University of Technology, Tianjin, 300401, China
- School of Materials Science & Engineering, Biomedical Materials Engineering Research Center, Hubei Key Laboratory of Polymer Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan, 430062, China
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Liu J, Wang L, Sun Y, Xiong Y, Li R, Sui M, Gao Z, Wang W, Sun H, Dai J. Antifungal Activity and Multi-Target Mechanism of Action of Methylaervine on Candida albicans. Molecules 2024; 29:4303. [PMID: 39339297 PMCID: PMC11433846 DOI: 10.3390/molecules29184303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2024] [Revised: 08/29/2024] [Accepted: 09/02/2024] [Indexed: 09/30/2024] Open
Abstract
The discovery of a lead compound against Candida albicans is urgently needed because of the lack of clinically available antifungal drugs and the increase in drug resistance. Herein, a β-carboline alkaloid methylaervine (MET) exhibited potential activity against C. albicans (MIC = 16-128 μg/mL), no hemolytic toxicity, and a low tendency to induce drug resistance. An antifungal mechanism study indicated that MET effectively inhibited the biofilm formation and disrupted the mature biofilm. Moreover, filamentation formation and spore germination were also weakened. The electron microscopy analysis revealed that MET could damage the cell structure, including the cell wall, membrane, and cytoplasm. In particular, the permeability and integrity of the cell membrane were destroyed. When it entered the fungi cell, it interfered with the redox homeostasis and DNA function. Overall, MET can inhibit the growth of C. albicans from multiple channels, such as biofilm, filamentation, cell structure, and intracellular targets, which are difficult to mutate at the same time to generate drug resistance. This work provides a promising lead compound for the creation of new antifungal agents against C. albicans.
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Affiliation(s)
- Jinyi Liu
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Luyao Wang
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Yifan Sun
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Yingyan Xiong
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Runchu Li
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Meixia Sui
- College of Biology and Oceanography, Weifang University, Weifang 261061, China
| | - Zhenzhen Gao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China
| | - Wei Wang
- School of Pharmacy, Shandong Second Medical University, Weifang 261053, China
| | - Hao Sun
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
| | - Jiangkun Dai
- School of Life Science and Technology, Shandong Second Medical University, Weifang 261053, China
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Schaefer S, Corrigan N, Brunke S, Lenardon MD, Boyer C. Combatting Fungal Infections: Advances in Antifungal Polymeric Nanomaterials. Biomacromolecules 2024; 25:5670-5701. [PMID: 39177507 DOI: 10.1021/acs.biomac.4c00866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Fungal pathogens cause over 6.5 million life-threatening systemic infections annually, with mortality rates ranging from 20 to 95%, even with medical intervention. The World Health Organization has recently emphasized the urgent need for new antifungal drugs. However, the range of effective antifungal agents remains limited and resistance is increasing. This Review explores the current landscape of fungal infections and antifungal drugs, focusing on synthetic polymeric nanomaterials like nanoparticles that enhance the physicochemical properties of existing drugs. Additionally, we examine intrinsically antifungal polymers that mimic naturally occurring peptides. Advances in polymer characterization and synthesis now allow precise design and screening for antifungal activity, biocompatibility, and drug interactions. These antifungal polymers represent a promising new class of drugs for combating fungal infections.
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Affiliation(s)
- Sebastian Schaefer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, New South Wales 2052, Australia
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, 07745 Jena, Germany
| | - Nathaniel Corrigan
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
| | - Sascha Brunke
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, 07745 Jena, Germany
| | - Megan D Lenardon
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, New South Wales 2052, Australia
| | - Cyrille Boyer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, New South Wales 2052, Australia
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Luo R, Xu H, Lin Q, Chi J, Liu T, Jin B, Ou J, Xu Z, Peng T, Quan G, Lu C. Emerging Trends in Dissolving-Microneedle Technology for Antimicrobial Skin-Infection Therapies. Pharmaceutics 2024; 16:1188. [PMID: 39339224 PMCID: PMC11435303 DOI: 10.3390/pharmaceutics16091188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 08/26/2024] [Accepted: 09/05/2024] [Indexed: 09/30/2024] Open
Abstract
Skin and soft-tissue infections require significant consideration because of their prolonged treatment duration and propensity to rapidly progress, resulting in severe complications. The primary challenge in their treatment stems from the involvement of drug-resistant microorganisms that can form impermeable biofilms, as well as the possibility of infection extending deep into tissues, thereby complicating drug delivery. Dissolving microneedle patches are an innovative transdermal drug-delivery system that effectively enhances drug penetration through the stratum corneum barrier, thereby increasing drug concentration at the site of infection. They offer highly efficient, safe, and patient-friendly alternatives to conventional topical formulations. This comprehensive review focuses on recent advances and emerging trends in dissolving-microneedle technology for antimicrobial skin-infection therapy. Conventional antibiotic microneedles are compared with those based on emerging antimicrobial agents, such as quorum-sensing inhibitors, antimicrobial peptides, and antimicrobial-matrix materials. The review also highlights the potential of innovative microneedles incorporating chemodynamic, nanoenzyme antimicrobial, photodynamic, and photothermal antibacterial therapies. This review explores the advantages of various antimicrobial therapies and emphasizes the potential of their combined application to improve the efficacy of microneedles. Finally, this review analyzes the druggability of different antimicrobial microneedles and discusses possible future developments.
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Affiliation(s)
- Rui Luo
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Huihui Xu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Qiaoni Lin
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Jiaying Chi
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Tingzhi Liu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Bingrui Jin
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Jiayu Ou
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Zejun Xu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Tingting Peng
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Guilan Quan
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Chao Lu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Department of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Pharmacy, College of Pharmacy, Jinan University, Guangzhou 511436, China
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
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5
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Ain QU, Rasheed U, Chen Z, Tong Z. Novel Schiff's base-assisted synthesis of metal-ligand nanostructures for multi-functional applications: Detection of catecholamines/antibiotics, removal of tetracycline, and antifungal treatment against plant pathogens. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135009. [PMID: 38964037 DOI: 10.1016/j.jhazmat.2024.135009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/29/2024] [Accepted: 06/21/2024] [Indexed: 07/06/2024]
Abstract
The development of nanozymes (NZ) for the simultaneous detection of multiple target chemicals is gaining paramount attention in the field of food and health sciences, and waste management industries. Nanozymes (NZ) effectively compensate for the environmental vulnerability of natural enzymes. Considering the development gap of NZ with diverse applications, we synthesized versatile Schiff's base ligands following a facile route and readily available starting reagents (glutaraldehyde, aminopyridines). DPDI, one of the synthesized ligands, readily reacted with transition metal ions (Cu+2, Ag+1, Zn+2 in specific) under ambient conditions, yielding the corresponding nanoparticles/MOF. The structures of ligands and their products were confirmed using various analytical techniques. The enzymatic efficacy of DPDI-Cu (km 0.25 mM=, Vmax = 10.75 µM/sec) surpassed Tremetese versicolor laccase efficacy (km 0. 5 mM=, Vmax = 2.15 µM/sec). Additionally, DPDI-Cu proved resilient to changing pH, temperature, ionic strength, organic solvent, and storage time compared to laccase and provided reusability. DPDI-Cu proved promising for colorimetric detection of dopamine, epinephrine, catechol, tetracycline, and quercetin. The mechanism of oxidative detection of TC was studied through LC/MS analysis. DPDI-Cu-bentonite composite efficiently adsorbed tetracycline with maximum Langmuir adsorption of 208 mg/g. Moreover, DPDI/Cu and DPDI-Ag nanoparticles possessed antifungal activity exhibiting a minimum inhibitory concentration of 400 µg/mL and 3.12 µg/mL against Aspergillus flavus. Florescent dye tracking and SEM/TEM analysis confirmed that DPDI-Ag caused disruption of the plasma membrane and triggered ROS generation and apoptosis-like death in fungal cells. The DPDI-Ag coating treatment of wheat seeds confirmed the non-phytotoxicity of Ag-NPs.
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Affiliation(s)
- Qurat Ul Ain
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University, China; Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Usman Rasheed
- Institute of Applied Microbiology, College of Agriculture, Guangxi University, Nanning 530005, China
| | - Zheng Chen
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University, China
| | - Zhangfa Tong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China.
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Schaefer S, Vij R, Sprague JL, Austermeier S, Dinh H, Judzewitsch PR, Müller-Loennies S, Lopes Silva T, Seemann E, Qualmann B, Hertweck C, Scherlach K, Gutsmann T, Cain AK, Corrigan N, Gresnigt MS, Boyer C, Lenardon MD, Brunke S. A synthetic peptide mimic kills Candida albicans and synergistically prevents infection. Nat Commun 2024; 15:6818. [PMID: 39122699 PMCID: PMC11315985 DOI: 10.1038/s41467-024-50491-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 07/11/2024] [Indexed: 08/12/2024] Open
Abstract
More than two million people worldwide are affected by life-threatening, invasive fungal infections annually. Candida species are the most common cause of nosocomial, invasive fungal infections and are associated with mortality rates above 40%. Despite the increasing incidence of drug-resistance, the development of novel antifungal formulations has been limited. Here we investigate the antifungal mode of action and therapeutic potential of positively charged, synthetic peptide mimics to combat Candida albicans infections. Our data indicates that these synthetic polymers cause endoplasmic reticulum stress and affect protein glycosylation, a mode of action distinct from currently approved antifungal drugs. The most promising polymer composition damaged the mannan layer of the cell wall, with additional membrane-disrupting activity. The synergistic combination of the polymer with caspofungin prevented infection of human epithelial cells in vitro, improved fungal clearance by human macrophages, and significantly increased host survival in a Galleria mellonella model of systemic candidiasis. Additionally, prolonged exposure of C. albicans to the synergistic combination of polymer and caspofungin did not lead to the evolution of tolerant strains in vitro. Together, this work highlights the enormous potential of these synthetic peptide mimics to be used as novel antifungal formulations as well as adjunctive antifungal therapy.
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Affiliation(s)
- Sebastian Schaefer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, NSW, Australia
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, NSW, Australia
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Raghav Vij
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Jakob L Sprague
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Sophie Austermeier
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Hue Dinh
- ARC Centre of Excellence in Synthetic Biology, School of Natural Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Peter R Judzewitsch
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, NSW, Australia
| | - Sven Müller-Loennies
- Division of Biophysics, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Taynara Lopes Silva
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Eric Seemann
- Institute of Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Britta Qualmann
- Institute of Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
- Faculty of Biological Sciences, Friedrich Schiller University Jena, Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
| | - Kirstin Scherlach
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Thomas Gutsmann
- Division of Biophysics, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
- Centre for Structural Systems Biology (CSSB), Hamburg, Germany
| | - Amy K Cain
- ARC Centre of Excellence in Synthetic Biology, School of Natural Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Nathaniel Corrigan
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, NSW, Australia
| | - Mark S Gresnigt
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
- Junior Research Group Adaptive Pathogenicity Strategies, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany
| | - Cyrille Boyer
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia.
- Australian Centre for NanoMedicine, UNSW, Sydney, NSW, Australia.
| | - Megan D Lenardon
- School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, NSW, Australia.
| | - Sascha Brunke
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Jena, Germany.
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Wang M, Li G, Zhou L, Hao Y, Wang L, Mao X, Zhang G, Zhao C. Design, synthesis and bioactivity of a new class of antifungal amino acid-directed phthalide compounds. PEST MANAGEMENT SCIENCE 2024; 80:3182-3193. [PMID: 38358013 DOI: 10.1002/ps.8028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 02/16/2024]
Abstract
BACKGROUND Peanut southern blight disease, caused by Sclerotium rolfsii, is a destructive soil-borne fungal disease. The current control measures, which mainly employ succinate dehydrogenase inhibitors, are prone to resistance and toxicity to non-target organisms. As a result, it is necessary to explore the potential of eco-friendly fungicides for this disease. RESULTS Fourteen novel phthalide compounds incorporating amino acid moieties were designed and synthesized. The in vitro activity of analog A1 [half maximal effective concentration (EC50) = 332.21 mg L-1] was slightly lower than that of polyoxin (EC50 = 284.32 mg L-1). It was observed that on the seventh day, the curative activity of A1 at a concentration of 600.00 mg L-1 was 57.75%, while the curative activity of polyoxin at a concentration of 300.00 mg L-1 was 42.55%. These results suggested that our compound exhibited in vivo activity. Peanut plants treated with A1 showed significant agronomic improvements compared to the untreated control. Several compounds in this series exhibited superior root absorption and conduction in comparison to the endothermic fungicide thifluzamide. The growth promotion and absorption-conduction experiments demonstrated the reason for the superior in vivo activity of the target compound. Cytotoxic assays have demonstrated that this series of targeted compounds exhibit low toxicity levels toward human lo2 liver cells. CONCLUSION Our results provide a new strategy for the design and synthesis of novel green compounds. Furthermore, the target compound A1 can serve as a lead for further development of green fungicides. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Meizi Wang
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Creation and Application of New Pesticide, Henan Agricultural University, Zhengzhou, China
- Henan Research Center of Green Pesticide Engineering and Technology, Henan Agricultural University, Zhengzhou, China
| | - Guangyao Li
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Creation and Application of New Pesticide, Henan Agricultural University, Zhengzhou, China
- Henan Research Center of Green Pesticide Engineering and Technology, Henan Agricultural University, Zhengzhou, China
| | - Lin Zhou
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Creation and Application of New Pesticide, Henan Agricultural University, Zhengzhou, China
- Henan Research Center of Green Pesticide Engineering and Technology, Henan Agricultural University, Zhengzhou, China
| | - Youwu Hao
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Longfei Wang
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Xuewei Mao
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Creation and Application of New Pesticide, Henan Agricultural University, Zhengzhou, China
- Henan Research Center of Green Pesticide Engineering and Technology, Henan Agricultural University, Zhengzhou, China
| | - Guoyan Zhang
- Plant Protection and Quarantine Station of Henan Province, Zhengzhou, China
| | - Chenxiang Zhao
- Department of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
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8
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Su M, Su Y. Recent Advances in Amphipathic Peptidomimetics as Antimicrobial Agents to Combat Drug Resistance. Molecules 2024; 29:2492. [PMID: 38893366 PMCID: PMC11173824 DOI: 10.3390/molecules29112492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
The development of antimicrobial drugs with novel structures and clear mechanisms of action that are active against drug-resistant bacteria has become an urgent need of safeguarding human health due to the rise of bacterial drug resistance. The discovery of AMPs and the development of amphipathic peptidomimetics have lay the foundation for novel antimicrobial agents to combat drug resistance due to their overall strong antimicrobial activities and unique membrane-active mechanisms. To break the limitation of AMPs, researchers have invested in great endeavors through various approaches in the past years. This review summarized the recent advances including the development of antibacterial small molecule peptidomimetics and peptide-mimic cationic oligomers/polymers, as well as mechanism-of-action studies. As this exciting interdisciplinary field is continuously expanding and growing, we hope this review will benefit researchers in the rational design of novel antimicrobial peptidomimetics in the future.
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Affiliation(s)
- Ma Su
- College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China
| | - Yongxiang Su
- College of Chemistry and Environmental Engineering, Jiaozuo University, Ren-Min Road, Jiaozuo 454000, China;
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Chen H, Geng X, Ning Q, Shi L, Zhang N, He S, Zhao M, Zhang J, Li Z, Shi J, Li J. Biophilic Positive Carbon Dot Exerts Antifungal Activity and Augments Corneal Permeation for Fungal Keratitis. NANO LETTERS 2024; 24:4044-4053. [PMID: 38517749 DOI: 10.1021/acs.nanolett.4c01042] [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: 03/24/2024]
Abstract
Fungal keratitis (FK) is an infectious eye disease that poses a significant risk of blindness. However, the effectiveness of conventional antifungal drugs is limited due to the intrinsic ocular barrier that impedes drug absorption. There is an urgent need to develop new therapeutic strategies to effectively combat FK. Herein, we synthesized an ultrasmall positively charged carbon dot using a simple stage-melting method. The carbon dot can penetrate the corneal barrier by opening the tight junctions, allowing them to reach the lesion site and effectively kill the fungi. The results both in vitro and in vivo demonstrated that it exhibited good biocompatibility and antifungal activity, significantly improving the therapeutic effect in a mouse model of FK. Therefore, this biophilic ultrasmall size and positive carbon dot, characterized by its ability to penetrate the corneal barrier and its antifungal properties, may offer valuable insights into the design of effective ocular nanomedicines.
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Affiliation(s)
- Huiying Chen
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
- School of Material Science and Engineering, Zhengzhou University, 450001 Zhengzhou, China
| | - Xiwen Geng
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Qingyun Ning
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
- School of Material Science and Engineering, Zhengzhou University, 450001 Zhengzhou, China
| | - Liuqi Shi
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Nan Zhang
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Siyu He
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Mengyang Zhao
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Junjie Zhang
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Zhanrong Li
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
| | - Jun Shi
- School of Material Science and Engineering, Zhengzhou University, 450001 Zhengzhou, China
| | - Jingguo Li
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, 450003 Zhengzhou, China
- School of Material Science and Engineering, Zhengzhou University, 450001 Zhengzhou, China
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10
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Cao Y, Han M, Ji S. Four-Arm δ-Ornithine-Based Polypeptoids Resensitize Voriconazole against Azole-Resistant C. albicans. ACS Infect Dis 2024; 10:701-714. [PMID: 38241468 DOI: 10.1021/acsinfecdis.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
Worldwide Candida albicans infections cause a huge burden in healthcare and the efficacy of traditional antifungals is diminished because of the rapid development of antifungal resistance. It is necessary to develop new antifungals or new strategies to make multidrug-resistant (MDR) C. albicans to resensitize to existing antifungal drugs. In this work, a series of 4-arm polypeptoids (FAPs) were synthesized through grafting linear ε-l-lysine or δ-ornithine-based oligopeptides to a trimeric lysine core. The most potent 4R-O7 exhibited excellent activities toward three sensitive and two MDR C. albicans strains with MIC values as low as 24-48 μg/mL (vs 375 μg/mL for ε-polylysine, ε-PL). The mechanism studies revealed that 4R-O7 penetrated the cell membrane and generated ROS to kill cells. 4R-O7 exhibited a synergistic effect (FICI < 0.5) with voriconazole (VOR) and also assisted VOR to restore its efficacy to MDR C. albicans. In addition, the combined use of 4R-O7 and VOR significantly improved the elimination efficacy of mature C. albicans biofilms and enhanced the potency in a mouse subcutaneous C. albicans infection model.
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Affiliation(s)
- Yuanqiao Cao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, Jilin, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Miaomiao Han
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, Jilin, P. R. China
| | - Shengxiang Ji
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, Jilin, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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