1
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Atac N, Gunduz H, Koc I, Onbasli K, Khan M, Savani S, Sennaroglu A, Can F, Acar HY, Kolemen S. Selective antibacterial and antibiofilm activity of chlorinated hemicyanine against gram-positive bacteria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124324. [PMID: 38676983 DOI: 10.1016/j.saa.2024.124324] [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: 02/29/2024] [Revised: 04/14/2024] [Accepted: 04/21/2024] [Indexed: 04/29/2024]
Abstract
Antibiotic-free therapies are highly needed due to the limited success of conventional approaches especially against biofilm related infections. In this direction, antimicrobial phototherapy, either in the form of antimicrobial photothermal therapy (aPTT) or antimicrobial photodynamic therapy (aPDT), have appeared to be highly promising candidates in recent years. These are local and promising approaches for antibiotic resistant bacterial infections and biofilms. Organic small photosensitizers (PSs) are extensively preferred in antimicrobial phototherapy applications as they offer a great opportunity to combine therapeutic action (aPTT, aPDT or both) with fluorescence imaging on a single molecule. In this study, the bactericidal effect of cationic chlorinated hemicyanine (Cl-Hem)-based type I PS, which can function as a dual aPDT/aPTT agent, was investigated on both planktonic cells and biofilms of different gram-positive (E. faecalis and S. epidermidis) and gram-negative bacteria (P. aeruginosa and K. pneumoniae) with and without 640 nm laser irradiation. Cl-Hem was shown to induce a selective phototheranostic activity against gram-positive bacteria (E. faecalis and S. epidermidis). Cl-Hem exhibited both dose and laser irradiation time dependent bactericidal effect on planktonic and biofilms of S. epidermidis. These results clearly showed that highly potent Cl-Hem can treat resistant microbial infections, while allowing fluorescence detection at the same time. High biofilm reduction observed with combined aPDT/aPTT action of Cl-Hem together with its non-cytotoxic nature points out that Cl-Hem is a promising PS for antibacterial and antibiofilm treatments.
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Affiliation(s)
- Nazli Atac
- Koç University, School of Medicine, Medical Microbiology, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye; Koç University-İşbank Center for Infectious Diseases (KUISCID), Topkapı, Istanbul, Turkiye
| | - Hande Gunduz
- Koç University, Department of Chemistry, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye; Nanofabrication and Nanocharacterization Centre for Scientific and Technological Advanced Research, Koç University, Istanbul, Turkiye
| | - Irem Koc
- Koç University, Graduate School of Materials Science and Engineering, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye
| | - Kubra Onbasli
- Istanbul Technical University, Department of Metallurgical and Materials Engineering, Istanbul, Turkiye
| | - Minahil Khan
- Koç University, Department of Physics, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye
| | - Samira Savani
- Koç University, Department of Chemistry, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye
| | - Alphan Sennaroglu
- Koç University, Department of Physics, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye; Koç University, Department of Electrical and Electronics Engineering, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye
| | - Fusun Can
- Koç University, School of Medicine, Medical Microbiology, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye; Koç University-İşbank Center for Infectious Diseases (KUISCID), Topkapı, Istanbul, Turkiye.
| | - Havva Yagci Acar
- Koç University, Department of Chemistry, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye.
| | - Safacan Kolemen
- Koç University, Department of Chemistry, Rumelifeneri Yolu, Sarıyer, Istanbul, Turkiye.
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2
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Zhou C, Li Y, Shen Y, Lv Z, Feng J, Jiang M, Du J, Guan W. Self-degradable photosensitizer exhibiting bacterial agglutination and membrane insertion toward safe photodynamic ablation. Chem Commun (Camb) 2024; 60:7053-7056. [PMID: 38899451 DOI: 10.1039/d4cc02264e] [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: 06/21/2024]
Abstract
Self-oxidative degradation photosensitizers capable of bacterial agglutination and membrane insertion were fabricated based on a simple co-assembly strategy, for efficiently killing P. aeruginosa and rapidly deactivating their function post-treatment.
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Affiliation(s)
- Chengcheng Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yimei Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yihui Shen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Ze Lv
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Jianguo Feng
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Meijuan Jiang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jian Du
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University, No. 16766, Jingshi Road, Jinan 250000, China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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3
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Sun H, Barboza-Ramos I, Wang X, Schanze KS. Phosphonium-Substituted Conjugated Polyelectrolytes Display Efficient Visible-Light-Induced Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38265208 DOI: 10.1021/acsami.3c16335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
We report the light-activated antibacterial activity of a new class of phosphonium (R-PMe3+)-substituted conjugated polyelectrolytes (CPEs). These polyelectrolytes feature a poly(phenylene ethynylene) (PPE) conjugated backbone substituted with side groups with the structure -O-(CH2)nPMe3+, where n = 3 or 6. The length of the side groups has an effect on the hydrophobic character of the CPEs and their propensity to interact with bacterial membranes. In a separate study, these phosphonium-substituted PPE CPEs were demonstrated to photosensitize singlet oxygen (1O2) and reactive oxygen species, a key factor for the photoinduced inactivation of bacteria. In this study, in vitro antibacterial assays against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus were performed by employing the series of polyelectrolytes under both dark and illumination conditions. In general, the phosphonium-substituted CPEs displayed profound light-activated biocidal activity, with >99% colony forming unit (CFU) reduction after 15 min of light exposure (16 mW cm-2) at a ≤20 μM CPE concentration. Strong biocidal activity was also observed in the dark for a CPE concentration of 20 μM against S. aureus; however, higher concentrations (200 μM) were needed to enable dark inactivation of E. coli. The dark activity is ascribed to bacterial membrane disruption by the CPEs, supported by a correlation of dark biocidal activity with the chain length of the side groups. The light-activated biocidal activity is associated with the ability of the CPEs to sensitize ROS, which is cytotoxic to the microorganisms. Serial dilution bacterial plating experiments revealed that the series of CPEs was able to induce a >5-log kill versus E. coli with 15 min of exposure to a blue LED source (16 mW cm-2).
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Affiliation(s)
- Han Sun
- Department of Chemistry, University of Texas, San Antonio, 1 UTSA Circle, San Antonio, Texas 78249, United States
| | - Isaí Barboza-Ramos
- Department of Chemistry, University of Texas, San Antonio, 1 UTSA Circle, San Antonio, Texas 78249, United States
| | - Xiaodan Wang
- Department of Chemistry, University of Texas, San Antonio, 1 UTSA Circle, San Antonio, Texas 78249, United States
| | - Kirk S Schanze
- Department of Chemistry, University of Texas, San Antonio, 1 UTSA Circle, San Antonio, Texas 78249, United States
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He T, Wang Y, Wang R, Yang H, Hu X, Pu Y, Yang B, Zhang J, Li J, Huang C, Jin R, Nie Y, Zhang X. Fibrous topology promoted pBMP2-activated matrix on titanium implants boost osseointegration. Regen Biomater 2023; 11:rbad111. [PMID: 38173764 PMCID: PMC10761207 DOI: 10.1093/rb/rbad111] [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: 10/30/2023] [Revised: 11/25/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024] Open
Abstract
Titanium (Ti) implants have been extensively used after surgical operations. Its surface bioactivity is of importance to facilitate integration with surrounding bone tissue, and ultimately ensure stability and long-term functionality of the implant. The plasmid DNA-activated matrix (DAM) coating on the surface could benefit osseointegration but is still trapped by poor transfection for further application, especially on the bone marrow mesenchymal stem cells (BMSCs) in vivo practical conditions. Herein, we constructed a DAM on the surface of fibrous-grained titanium (FG Ti) composed of phase-transition lysozyme (P) as adhesive, cationic arginine-rich lipid (RLS) as the transfection agent and plasmid DNA (pDNA) for bone morphology protein 2 (BMP2) expression. The cationic lipid RLS improved up to 30-fold higher transfection than that of commercial reagents (Lipofectamine 2000 and polyethyleneimine) on MSC. And importantly, Ti surface topology not only promotes the DAM to achieve high transfection efficiency (∼75.7% positive cells) on MSC due to the favorable combination but also reserves its contact induction effect for osteoblasts. Upon further exploration, the fibrous topology on FG Ti could boost pDNA uptake for gene transfection, and cell migration in MSC through cytoskeleton remodeling and induce contact guidance for enhanced osteointegration. At the same time, the cationic RLS together with adhesive P were both antibacterial, showing up to 90% inhibition rate against Escherichia coli and Staphylococcus aureus with reduced adherent microorganisms and disrupted bacteria. Finally, the FG Ti-P/pBMP2 implant achieved accelerated bone healing capacities through highly efficient gene delivery, aligned surface topological structure and increased antimicrobial properties in a rat femoral condylar defect model.
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Affiliation(s)
- Ting He
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yichun Wang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Ruohan Wang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Huan Yang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Xueyi Hu
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yiyao Pu
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Binbin Yang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
- Department of the Affiliated Stomatological Hospital of Southwest Medical University, Southwest Medical University, Luzhou 646000, China
| | - Jingyuan Zhang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Juan Li
- State Key Laboratory of Oral Diseases, West China School of Stomatology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chongxiang Huang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610064, China
| | - Rongrong Jin
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yu Nie
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Xingdong Zhang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
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5
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Zeng Y, Hameed S, Xiong H. Multifunctional nucleoside-AIEgens bearing quaternary ammonium cationic for reversible response, bioimaging, and antibacterial. Anal Chim Acta 2023; 1283:341924. [PMID: 37977773 DOI: 10.1016/j.aca.2023.341924] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/12/2023] [Accepted: 10/14/2023] [Indexed: 11/19/2023]
Abstract
A multifunctional nucleoside-based AIEgens sensor (TPEPy-dU) was constructed for visual screening of Hg2+, determine to the reversible response of Fe3+ and biothiols, and applied for cell imaging, and drug-free bacterial killing. The TPEPy-dU displayed 10-folds fluorescence enhancement at 540 nm of emission in response to trace Hg2+ ions with 10 nM of LOD, which can be immediately quenched by adding Fe3+ or GSH/Cys-containing sulfhydryl groups. Moreover, their bacterial staining efficiency closely correlates with their antibacterial efficacy as they demonstrated comparatively higher antibacterial activity against Gram-positive bacteria than Gram-negative bacteria. The drug-free antibacterial results involved the stating prominent surface damages at the sites of interactions between bacterial cells and TPEPy-dU that were further verified by CLSM and SEM images. It can be applied as a potential fluorescent agent to explore the related antibacterial mechanisms for treating and monitoring bacterial infections in vivo due to their nontoxic nature. Compared with conventional sensors and antibacterial therapies, these findings elevated the synthetic strategies of fluorescent probes and represented an advanced antibacterial agent wearing quaternary ammonium cationic with low resistance in clinical diagnosis.
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Affiliation(s)
- Yating Zeng
- Institute of Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| | - Saima Hameed
- Institute of Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| | - Hai Xiong
- Institute of Advanced Study, Shenzhen University, Shenzhen, 518060, PR China.
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6
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Zhang Z, Deng Z, Zhu L, Zeng J, Cai XM, Qiu Z, Zhao Z, Tang BZ. Aggregation-induced emission biomaterials for anti-pathogen medical applications: detecting, imaging and killing. Regen Biomater 2023; 10:rbad044. [PMID: 37265605 PMCID: PMC10229374 DOI: 10.1093/rb/rbad044] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/11/2023] [Accepted: 04/23/2023] [Indexed: 06/03/2023] Open
Abstract
Microbial pathogens, including bacteria, fungi and viruses, greatly threaten the global public health. For pathogen infections, early diagnosis and precise treatment are essential to cut the mortality rate. The emergence of aggregation-induced emission (AIE) biomaterials provides an effective and promising tool for the theranostics of pathogen infections. In this review, the recent advances about AIE biomaterials for anti-pathogen theranostics are summarized. With the excellent sensitivity and photostability, AIE biomaterials have been widely applied for precise diagnosis of pathogens. Besides, different types of anti-pathogen methods based on AIE biomaterials will be presented in detail, including chemotherapy and phototherapy. Finally, the existing deficiencies and future development of AIE biomaterials for anti-pathogen applications will be discussed.
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Affiliation(s)
- Zicong Zhang
- Clinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Medicine, School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Ziwei Deng
- Clinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Medicine, School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Lixun Zhu
- Clinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Medicine, School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Jialin Zeng
- Clinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Medicine, School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Xu Min Cai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Rescources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zijie Qiu
- Clinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Medicine, School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Zheng Zhao
- Correspondence address. E-mail: (Z.Z.); (B.Z.T.)
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7
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Chauhan S, Manish. Temperature dependent micellization behavior of as synthesized anionic SAILs in aqueous nonionic polymer solutions: conductivity, UV-visible probe and antimicrobial studies. J DISPER SCI TECHNOL 2023. [DOI: 10.1080/01932691.2023.2188924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Affiliation(s)
| | - Manish
- Department of Chemistry, H. P. University, Shimla, India
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8
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Wen H, Wu Q, Liu L, Li Y, Sun T, Xie Z. Structural optimization of BODIPY photosensitizers for enhanced photodynamic antibacterial activities. Biomater Sci 2023; 11:2870-2876. [PMID: 36876488 DOI: 10.1039/d3bm00073g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Enhancing the interactions between photosensitizers and bacteria is key to developing effective photodynamic antibacterial agents. However, the influence of different structures on the therapeutic effects has not been systematically investigated. Herein, 4 BODIPYs with distinct functional groups, including the phenylboronic acid (PBA) group and pyridine (Py) cations, were designed to explore their photodynamic antibacterial activities. The BODIPY with the PBA group (IBDPPe-PBA) exhibits potent activity against planktonic Staphylococcus aureus (S. aureus) upon illumination, while the BODIPY with Py cations (IBDPPy-Ph) or both the PBA group and Py cations (IBDPPy-PBA) can significantly minimize the growth of both S. aureus and Escherichia coli (E. coli). In particular, IBDPPy-Ph can not only eliminate the mature S. aureus biofilm and E. coli biofilm in vitro, but also promote the healing of the infected wound. Our work provides an alternative for reasonable design of photodynamic antibacterial materials.
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Affiliation(s)
- Hui Wen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. .,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Qihang Wu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. .,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Liqian Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. .,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yite Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. .,University of Science and Technology of China, Hefei 230026, P. R. China
| | - Tingting Sun
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. .,University of Science and Technology of China, Hefei 230026, P. R. China
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9
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Jiang X, Luo Z, Zhang B, Li P, Xiao J, Su W. Moderate microwave-assisted preparation of phthalocyanine-based carbon quantum dots for improved photo-inactivation of bacteria. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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10
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Visualization of Antimicrobial-Induced Bacterial Membrane Disruption with a Bicolor AIEgen. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10070284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Gram-negative bacteria are difficult to kill due to their complex cell envelope, including the outer membrane (OM) and cytoplasmic membrane (CM). To monitor the membranolytic action of antimicrobials on Gram-negative bacteria would facilitate the development of effective antimicrobials. In this paper, an aggregation-induced emission luminogen (AIEgen) with microenvironment-sensitive properties was employed to indicate the interaction of antimicrobials with the OM and CM of Gram-negative bacteria. The damaged extent of OM and CM caused by antimicrobials with the change of dosage and incubation time can be visually captured based on the variation of two emission colors of IQ-Cm responding to OM-defective (green) and CM-disruptive bacteria (orange). Meanwhile, the activity assessment of antimicrobials can be easily realized within 1~2 h based on the distinct response of IQ-Cm to live and dead E. coli, which is much faster than the agar plate culture. This probe may shed light on the understanding of the interaction between the membrane-active antimicrobials and cell envelope of Gram-negative bacteria and contribute to the future development of antimicrobials.
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11
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Reyes-Angeles MC, Caldera-Villalobos M, García-Serrano J, Trejo-Carbajal N, Esparza-González SC, Guerrero-Serrano AL, Herrera-González AM. Green synthesis of 1D and 0D Ag nanostructures using oligomeric polyelectrolytes as reducing and stabilizing agents. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05002-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Wu X, Yang M, Kim JS, Wang R, Kim G, Ha J, Kim H, Cho Y, Nam KT, Yoon J. Reactivity Differences Enable ROS for Selective Ablation of Bacteria. Angew Chem Int Ed Engl 2022; 61:e202200808. [PMID: 35174598 DOI: 10.1002/anie.202200808] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Indexed: 11/11/2022]
Abstract
An effective strategy to engineer selective photodynamic agents to surmount bacterial-infected diseases, especially Gram-positive bacteria remains a great challenge. Herein, we developed two examples of compounds for a proof-of-concept study where reactive differences in reactive oxygen species (ROS) can induce selective ablation of Gram-positive bacteria. Sulfur-replaced phenoxazinium (NBS-N) mainly generates a superoxide anion radical capable of selectively killing Gram-positive bacteria, while selenium-substituted phenoxazinium (NBSe-N) has a higher generation of singlet oxygen that can kill both Gram-positive and Gram-negative bacteria. This difference was further evidenced by bacterial fluorescence imaging and morphological changes. Moreover, NBS-N can also successfully heal the Gram-positive bacteria-infected wounds in mice. We believe that such reactive differences may pave a general way to design selective photodynamic agents for ablating Gram-positive bacteria-infected diseases.
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Affiliation(s)
- Xiaofeng Wu
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Mengyao Yang
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Ji Seon Kim
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul, 03760, Republic of Korea
| | - Rui Wang
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Gyoungmi Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Jeongsun Ha
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Heejeong Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
| | - Yejin Cho
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul, 03760, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul, 03760, Republic of Korea
| | - Juyoung Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03706, Republic of Korea
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13
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Wu X, Yang M, Kim JS, Wang R, Kim G, Ha J, Kim H, Cho Y, Nam KT, Yoon J. Reactivity Differences Enable ROS for Selective Ablation of Bacteria. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaofeng Wu
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Mengyao Yang
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Ji Seon Kim
- Severance Biomedical Science Institute Brain Korea 21 PLUS Project for Medical Science, College of Medicine Yonsei University Seoul 03760 Republic of Korea
| | - Rui Wang
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Gyoungmi Kim
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Jeongsun Ha
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Heejeong Kim
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
| | - Yejin Cho
- Severance Biomedical Science Institute Brain Korea 21 PLUS Project for Medical Science, College of Medicine Yonsei University Seoul 03760 Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute Brain Korea 21 PLUS Project for Medical Science, College of Medicine Yonsei University Seoul 03760 Republic of Korea
| | - Juyoung Yoon
- Department of Chemistry and Nanoscience Ewha Womans University Seoul 03706 Republic of Korea
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14
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Kaya K, Khalil M, Fetrow B, Fritz H, Jagadesan P, Bondu V, Ista L, Chi EY, Schanze KS, Whitten DG, Kell A. Rapid and Effective Inactivation of SARS-CoV-2 with a Cationic Conjugated Oligomer with Visible Light: Studies of Antiviral Activity in Solutions and on Supports. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4892-4898. [PMID: 35040619 PMCID: PMC8790820 DOI: 10.1021/acsami.1c19716] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/30/2021] [Indexed: 05/12/2023]
Abstract
This paper presents results of a study of a new cationic oligomer that contains end groups and a chromophore affording inactivation of SARS-CoV-2 by visible light irradiation in solution or as a solid coating on paper wipes and glass fiber filtration substrates. A key finding of this study is that the cationic oligomer with a central thiophene ring and imidazolium charged groups gives outstanding performance in both the killing of E. coli bacterial cells and inactivation of the virus at very short times. Our introduction of cationic N-methyl imidazolium groups enhances the light activation process for both E. coli and SARS-CoV-2 but dampens the killing of the bacteria and eliminates the inactivation of the virus in the dark. For the studies with this oligomer in solution at a concentration of 1 μg/mL and E. coli, we obtain 3 log killing of the bacteria with 10 min of irradiation with LuzChem cool white lights (mimicking indoor illumination). With the oligomer in solution at a concentration of 10 μg/mL, we observe 4 log inactivation (99.99%) in 5 min of irradiation and total inactivation after 10 min. The oligomer is quite active against E. coli on oligomer-coated paper wipes and glass fiber filter supports. The SARS-CoV-2 is also inactivated by oligomer-coated glass fiber filter papers. This study indicates that these oligomer-coated materials may be very useful as wipes and filtration materials.
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Affiliation(s)
- Kemal Kaya
- Department
of Chemistry and Chemical Biology, University
of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- Department
of Biochemistry, Kutahya Dumlupinar University, Kutahya 43000, Turkey
| | - Mohammed Khalil
- Center
for Biomedical Engineering and Department of Chemical and Biological
Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Benjamin Fetrow
- Center
for Biomedical Engineering and Department of Chemical and Biological
Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Hugh Fritz
- Department
of Chemistry and Chemical Biology, University
of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Pradeepkumar Jagadesan
- Department
of Chemistry, University of Texas at San
Antonio, San Antonio, Texas 78249-1644, United States
| | - Virginie Bondu
- Department
of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico 87131-0001, United States
| | - Linnea Ista
- Center
for Biomedical Engineering and Department of Chemical and Biological
Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Eva Y. Chi
- Center
for Biomedical Engineering and Department of Chemical and Biological
Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Kirk S. Schanze
- Department
of Chemistry, University of Texas at San
Antonio, San Antonio, Texas 78249-1644, United States
| | - David G. Whitten
- Center
for Biomedical Engineering, Department of Chemistry and Chemical Biology,
and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
| | - Alison Kell
- Department
of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico 87131-0001, United States
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15
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Wang S, Ma L, Wang S, Wang Y, Liu G, Wang H. White light-induced AIEgen polyurethane films containing Schiff base copper( ii) complexes for synergistic chemo/photodynamic antibacterial therapy. Polym Chem 2022. [DOI: 10.1039/d2py00061j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyurethane films containing AIEgens and copper complexes can act as a potential antibacterial agent for multi-mode combined antibacterial therapy.
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Affiliation(s)
- Shiyu Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Li Ma
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Shuang Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, PR China
| | - Yazhou Wang
- Sinopec, Shengli Oilfield, Chunliang Oil Prod Plant, Dongying 256600, Shangdong, China
| | - Gongyan Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, PR China
| | - Haibo Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, PR China
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16
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Su X, Liu R, Li Y, Han T, Zhang Z, Niu N, Kang M, Fu S, Wang D, Wang D, Tang BZ. Aggregation-Induced Emission-Active Poly(phenyleneethynylene)s for Fluorescence and Raman Dual-Modal Imaging and Drug-Resistant Bacteria Killing. Adv Healthc Mater 2021; 10:e2101167. [PMID: 34606177 DOI: 10.1002/adhm.202101167] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/14/2021] [Indexed: 12/14/2022]
Abstract
Poly(phenyleneethynylene) (PPE) is a widely used functional conjugated polymer with applications ranging from organic optoelectronics and fluorescence sensors to optical imaging and theranostics. However, the fluorescence efficiency of PPE in aggregate states is generally not as good as their solution states, which greatly compromises their performance in fluorescence-related applications. Herein, a series of PPE derivatives with typical aggregation-induced emission (AIE) properties is designed and synthesized. In these PPEs, the diethylamino-substituted tetraphenylethene units function as the long-wavelength AIE source and the alkyl side chains serve as the functionalization site. The obtained AIE-active PPEs with large π-conjugation show strong aggregate-state fluorescence, interesting self-assembly behaviors, inherently enhanced alkyne vibrations in the Raman-silent region of cells, and efficient antibacterial activities. The PPE nanoparticles with good cellular uptake capability can clearly and sensitively visualize the tumor region and residual tumors via their fluorescence and Raman signals, respectively, to benefit the precise tumor resection surgery. After post-functionalization, the obtained PPE-based polyelectrolyte can preferentially image bacteria over mammalian cells and possesses efficient photodynamic killing capability against Gram-positive and drug-resistant bacteria. This work provides a feasible design strategy for developing functional conjugated polymers with multimodal imaging capability as well as photodynamic antimicrobial ability.
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Affiliation(s)
- Xiang Su
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 China
| | - Ruihua Liu
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences Nankai University Tianjin 300071 China
| | - Ying Li
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
| | - Ting Han
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
| | - Zhijun Zhang
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Niu Niu
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Miaomiao Kang
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Shuang Fu
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Deliang Wang
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Dong Wang
- Center for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
| | - Ben Zhong Tang
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 China
- Shenzhen Institute of Aggregate Science and Technology School of Science and Engineering The Chinese University of Hong Kong Shenzhen Guangdong 518172 China
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17
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McCuskey SR, Chatsirisupachai J, Zeglio E, Parlak O, Panoy P, Herland A, Bazan GC, Nguyen TQ. Current Progress of Interfacing Organic Semiconducting Materials with Bacteria. Chem Rev 2021; 122:4791-4825. [PMID: 34714064 DOI: 10.1021/acs.chemrev.1c00487] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Microbial bioelectronics require interfacing microorganisms with electrodes. The resulting abiotic/biotic platforms provide the basis of a range of technologies, including energy conversion and diagnostic assays. Organic semiconductors (OSCs) provide a unique strategy to modulate the interfaces between microbial systems and external electrodes, thereby improving the performance of these incipient technologies. In this review, we explore recent progress in the field on how OSCs, and related materials capable of charge transport, are being used within the context of microbial systems, and more specifically bacteria. We begin by examining the electrochemical communication modes in bacteria and the biological basis for charge transport. Different types of synthetic organic materials that have been designed and synthesized for interfacing and interrogating bacteria are discussed next, followed by the most commonly used characterization techniques for evaluating transport in microbial, synthetic, and hybrid systems. A range of applications is subsequently examined, including biological sensors and energy conversion systems. The review concludes by summarizing what has been accomplished so far and suggests future design approaches for OSC bioelectronics materials and technologies that hybridize characteristic properties of microbial and OSC systems.
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Affiliation(s)
- Samantha R McCuskey
- Department of Chemistry, National University of Singapore, Singapore 119077, Singapore
| | - Jirat Chatsirisupachai
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Erica Zeglio
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm 17177, Sweden
| | - Onur Parlak
- Dermatology and Venereology Division, Department of Medicine(Solna), Karolinska Institute, Stockholm 17177, Sweden.,AIMES Center of Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Stockholm 17177, Sweden
| | - Patchareepond Panoy
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Anna Herland
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm 17177, Sweden.,AIMES Center of Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Stockholm 17177, Sweden
| | - Guillermo C Bazan
- Department of Chemistry, National University of Singapore, Singapore 119077, Singapore
| | - Thuc-Quyen Nguyen
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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18
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Zhang B, Yan H, Meng Z, Li P, Jiang X, Wu Z, Xiao JA, Su W. Photodynamic and Photothermal Ce6-Modified Gold Nanorod as a Potent Alternative Candidate for Improved Photoinactivation of Bacteria. ACS APPLIED BIO MATERIALS 2021; 4:6742-6757. [PMID: 35006976 DOI: 10.1021/acsabm.1c00474] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The global rise of antibiotic resistance of pathogenic bacteria has become an increasing medical and public concern, which is further urging the development of antimicrobial channels for treating infectious diseases. The combination of photodynamic therapy (PDT) with photothermal therapy (PTT) has been considered as a promising alternative way for the replacement of traditional antibiotic therapy. In this research, the newly fabricated Chlorin-e6 (Ce6) conjugated mesoporous silica-coated AuNRs, designated AuNR@SiO2-NH2-Ce6, exhibited synergistic photothermal effects and single oxygen localized generation property, and showed stronger photoinactivation for bacteria compared with Ce6. AuNR@SiO2-NH2-Ce6 can anchor to the cell membrane and accumulate in the interior of cells. Furthermore, the unique porous structure of AuNR@SiO2NH2 enabled Ce6 encapsulation in the mesopores and was subsequently released and activated by photothermic effect, allowing the generated single oxygen to penetrate into the cytoplasmic membrane or directly enter the interior of bacteria cells, thus overcoming the inherent defects of single oxygen. AuNR@SiO2-NH2-Ce6 not only damaged the integrity of the cell membrane of bacteria but also facilitated the cellular permeation and accumulation of external nanoagents in the bacteria upon light irradiation. In addition, AuNR@SiO2-NH2-Ce6 exhibited negligible cytotoxicity toward mammalian cells and hemolytic activity. Therefore, AuNR@SiO2-NH2-Ce6 may be highly promising candidates as topical antibacterial agents, and this study has wide implications on the design of next-generation antimicrobial agents.
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Affiliation(s)
- Baoqu Zhang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Hongjun Yan
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Zhouting Meng
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Peiyuan Li
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Xiantao Jiang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Zihua Wu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
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19
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Mach M, Kowalska M, Olechowska K, Płachta Ł, Wydro P. The studies on the membrane activity of triester of phosphatidylcholine in artificial membrane systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1863:183711. [PMID: 34343534 DOI: 10.1016/j.bbamem.2021.183711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/14/2021] [Accepted: 07/21/2021] [Indexed: 11/28/2022]
Abstract
Due to the increasing number of infections together with the appearance of bacteria exhibiting multi-drug resistance, new antibiotics are being sought. In this context the interest of the cationic lipoids increases because of their amphiphilic structure and positive charge that can stimulates the antibacterial action of these compounds. Thus, in this work we have performed the studies on the effect of one selected triesters of phosphatidylcholine, namely 1,2-dipalmitoyl-sn-glycero-3-ethylphosphocholine (EDPPC), on the model lipid membranes. The investigations included the analysis of the impact of EDPPC on multicomponent monolayers and bilayers consisting of the lipids naturally occurring in bacterial membranes (phosphatidylethanolamines (PE), phosphatidylglycerols (PG) and cardiolipin (CL)), mixed in proportions reflecting the lipid composition of these biomembranes. In the study, the Langmuir monolayers (registered on water and PBS buffer) and liposomes as model bacterial biomembranes were applied. The obtained results demonstrate that the presence of cationic lipoid in PE/PG and PE/PG/CL systems significantly modifies their properties and molecular organization. The incorporation of EDPPC into model bacterial membranes primarily impact on the intermolecular interactions. It was shown that the strength of the interaction between the cationic lipid and the components of the model membranes depends both on the composition of the membrane as well as on the type of subphase. Furthermore, the investigated cationic lipoid leads to the decrease of the ordering of acyl chains and thus to the increase of fluidity of membranes. The obtained results allow one to propose that EDPPC may behave as antibiotic active at the level of membrane.
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Affiliation(s)
- Marzena Mach
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Magdalena Kowalska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Karolina Olechowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Łukasz Płachta
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Paweł Wydro
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
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20
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Elgiddawy N, Ren S, Ghattas W, Rouby WMAE, El-Gendy AO, Farghali AA, Yassar A, Korri-Youssoufi H. Antimicrobial Activity of Cationic Poly(3-hexylthiophene) Nanoparticles Coupled with Dual Fluorescent and Electrochemical Sensing: Theragnostic Prospect. SENSORS (BASEL, SWITZERLAND) 2021; 21:1715. [PMID: 33801383 PMCID: PMC7958628 DOI: 10.3390/s21051715] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/22/2021] [Accepted: 02/22/2021] [Indexed: 12/17/2022]
Abstract
Designing therapeutic and sensor materials to diagnose and eliminate bacterial infections remains a significant challenge for active theragnostic nanoprobes. In the present work, fluorescent/electroactive poly(3-hexylthiophene) P3HT nanoparticles (NPs) stabilized with quaternary ammonium salts using cetyltrimethylammonium bromide (CTAB), (CTAB-P3HT NPs) were prepared using a simple mini-emulsion method. The morphology, spectroscopic properties and electronic properties of CTAB-P3HT NPs were characterized by DLS, zeta potential, SEM, TEM, UV-vis spectrophotometry, fluorescence spectroscopy and electrochemical impedance spectroscopy (EIS). In an aqueous solution, CTAB-P3HT NPs were revealed to be uniformly sized, highly fluorescent and present a highly positively charged NP surface with good electroactivity. Dual detection was demonstrated as the binding of the bacteria to NPs could be observed by fluorescence quenching as well as by the changes in EIS. Binding of E. coli to CTAB-P3HT NPs was demonstrated and LODs of 5 CFU/mL and 250 CFU/mL were obtained by relying on the fluorescence spectroscopy and EIS, respectively. The antimicrobial activity of CTAB-P3HT NPs on bacteria and fungi was also studied under dark and nutritive conditions. An MIC and an MBC of 2.5 µg/mL were obtained with E. coli and with S. aureus, and of 0.312 µg/mL with C. albicans. Additionally a good biocompatibility toward normal human cells (WI38) was observed, which opens the way to their possible use as a therapeutic agent.
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Affiliation(s)
- Nada Elgiddawy
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), ECBB, 91400 Orsay, France; (N.E.); (W.G.)
- Department of Biotechnology and Life Sciences, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt
| | - Shiwei Ren
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau, France; (S.R.); (A.Y.)
| | - Wadih Ghattas
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), ECBB, 91400 Orsay, France; (N.E.); (W.G.)
| | - Waleed M. A. El Rouby
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt; (W.M.A.E.R.); (A.A.F.)
| | - Ahmed O. El-Gendy
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt;
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Ahmed A. Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62 511, Egypt; (W.M.A.E.R.); (A.A.F.)
| | - Abderrahim Yassar
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau, France; (S.R.); (A.Y.)
| | - Hafsa Korri-Youssoufi
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), ECBB, 91400 Orsay, France; (N.E.); (W.G.)
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21
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New Approach in the Application of Conjugated Polymers: The Light-Activated Source of Versatile Singlet Oxygen Molecule. MATERIALS 2021; 14:ma14051098. [PMID: 33652904 PMCID: PMC7956640 DOI: 10.3390/ma14051098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 01/17/2023]
Abstract
For many years, the research on conjugated polymers (CPs) has been mainly focused on their application in organic electronics. Recent works, however, show that due to the unique optical and photophysical properties of CPs, such as high absorption in UV–Vis or even near-infrared (NIR) region and efficient intra-/intermolecular energy transfer, which can be relatively easily optimized, CPs can be considered as an effective light-activated source of versatile and highly reactive singlet oxygen for medical or catalytic use. The aim of this short review is to present the novel possibilities that lie dormant in those exceptional polymers with the extended system of π-conjugated bonds.
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22
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Jessop IA, Pérez YP, Jachura A, Nuñez H, Saldías C, Isaacs M, Tundidor-Camba A, Terraza CA, Araya-Durán I, Camarada MB, Cárcamo-Vega JJ. New Hybrid Copper Nanoparticles/Conjugated Polyelectrolyte Composite with Antibacterial Activity. Polymers (Basel) 2021; 13:polym13030401. [PMID: 33513801 PMCID: PMC7865910 DOI: 10.3390/polym13030401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/23/2021] [Accepted: 01/24/2021] [Indexed: 01/16/2023] Open
Abstract
In the search for new materials to fight against antibiotic-resistant bacteria, a hybrid composite from metallic copper nanoparticles (CuNPs) and a novel cationic π-conjugated polyelectrolyte (CPE) were designed, synthesized, and characterized. The CuNPs were prepared by chemical reduction in the presence of CPE, which acts as a stabilizing agent. Spectroscopic analysis and electron microscopy showed the distinctive band of the metallic CuNP surface plasmon and their random distribution on the CPE laminar surface, respectively. Theoretical calculations on CuNP/CPE deposits suggest that the interaction between both materials occurs through polyelectrolyte side chains, with a small contribution of its backbone electron density. The CuNP/CPE composite showed antibacterial activity against Gram-positive (Staphylococcus aureus and Enterococcus faecalis) and Gram-negative (Escherichia coli and Salmonella enteritidis) bacteria, mainly attributed to the CuNPs’ effect and, to a lesser extent, to the cationic CPE.
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Affiliation(s)
- Ignacio A. Jessop
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá. P.O. Box 7-D, Arica 1000007, Chile; (Y.P.P.); (A.J.); (H.N.)
- Correspondence: (I.A.J.); (M.B.C.)
| | - Yasmín P. Pérez
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá. P.O. Box 7-D, Arica 1000007, Chile; (Y.P.P.); (A.J.); (H.N.)
| | - Andrea Jachura
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá. P.O. Box 7-D, Arica 1000007, Chile; (Y.P.P.); (A.J.); (H.N.)
| | - Hipólito Nuñez
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá. P.O. Box 7-D, Arica 1000007, Chile; (Y.P.P.); (A.J.); (H.N.)
| | - Cesar Saldías
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.S.); (M.I.)
| | - Mauricio Isaacs
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.S.); (M.I.)
| | - Alain Tundidor-Camba
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.T.-C.); (C.A.T.)
| | - Claudio A. Terraza
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.T.-C.); (C.A.T.)
| | - Ingrid Araya-Durán
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile;
| | - María B. Camarada
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile;
- Núcleo de Química y Bioquímica, Facultad de Estudios Interdisciplinarios, Universidad Mayor, Santiago 8580745, Chile
- Correspondence: (I.A.J.); (M.B.C.)
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23
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Monge F, Jagadesan P, Bondu V, Donabedian PL, Ista L, Chi EY, Schanze KS, Whitten DG, Kell AM. Highly Effective Inactivation of SARS-CoV-2 by Conjugated Polymers and Oligomers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:55688-55695. [PMID: 33267577 PMCID: PMC7724758 DOI: 10.1021/acsami.0c17445] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/18/2020] [Indexed: 05/08/2023]
Abstract
In the present study, we examined the inactivation of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by synthetic conjugated polymers and oligomers developed in our laboratories as antimicrobials for bacteria, fungi, and nonenveloped viruses. The results show highly effective light-induced inactivation with several of these oligomers and polymers including irradiation with near-UV and visible light. In the best case, one oligomer induced a 5-log reduction in pfu/mL within 10 min. In general, the oligomers are more active than the polymers; however, the polymers are active with longer wavelength visible irradiation. Although not studied quantitatively, the results show that in the presence of the agents at concentrations similar to those used in the light studies, there is essentially no dark inactivation of the virus. Because three of the five materials/compounds examined are quaternary ammonium derivatives, this study indicates that conventional quaternary ammonium antimicrobials may not be active against SARS-CoV-2. Our results suggest several applications involving the incorporation of these materials in wipes, sprays, masks, and clothing and other personal protection equipment that can be useful in preventing infections and the spreading of this deadly virus and future outbreaks from similar viruses.
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Affiliation(s)
- Florencia
A. Monge
- Center
for Biomedical Engineering, University of
New Mexico, Albuquerque 87131-0001, New Mexico, United States
- Biomedical
Engineering Graduate Program, University
of New Mexico, Albuquerque 87131-0001, New Mexico, United States
| | - Pradeepkumar Jagadesan
- Department
of Chemistry, University of Texas at San
Antonio, San Antonio 78249-1644, Texas, United States
| | - Virginie Bondu
- Department
of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque 87131-0001, New Mexico, United States
| | - Patrick L. Donabedian
- Center
for Biomedical Engineering, University of
New Mexico, Albuquerque 87131-0001, New Mexico, United States
- Nanoscience
and Microsystems Engineering Graduate Program, University of New Mexico, Albuquerque 87131-0001, New Mexico, United States
| | - Linnea Ista
- Center
for Biomedical Engineering, University of
New Mexico, Albuquerque 87131-0001, New Mexico, United States
- Department
of Chemical and Biological Engineering, University of New Mexico, Albuquerque 87131, New Mexico, United States
| | - Eva Y. Chi
- Center
for Biomedical Engineering, University of
New Mexico, Albuquerque 87131-0001, New Mexico, United States
- Department
of Chemical and Biological Engineering, University of New Mexico, Albuquerque 87131, New Mexico, United States
| | - Kirk S. Schanze
- Department
of Chemistry, University of Texas at San
Antonio, San Antonio 78249-1644, Texas, United States
| | - David G. Whitten
- Center
for Biomedical Engineering, University of
New Mexico, Albuquerque 87131-0001, New Mexico, United States
- Department
of Chemical and Biological Engineering, University of New Mexico, Albuquerque 87131, New Mexico, United States
- Department
of Chemistry and Chemical Biology, University
of New Mexico, Albuquerque 87131-0001, New Mexico, United States
| | - Alison M. Kell
- Department
of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque 87131-0001, New Mexico, United States
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24
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Zamani E, Johnson TJ, Chatterjee S, Immethun C, Sarella A, Saha R, Dishari SK. Cationic π-Conjugated Polyelectrolyte Shows Antimicrobial Activity by Causing Lipid Loss and Lowering Elastic Modulus of Bacteria. ACS APPLIED MATERIALS & INTERFACES 2020; 12:49346-49361. [PMID: 33089982 PMCID: PMC8926324 DOI: 10.1021/acsami.0c12038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Cationic, π-conjugated oligo-/polyelectrolytes (CCOEs/CCPEs) have shown great potential as antimicrobial materials to fight against antibiotic resistance. In this work, we treated wild-type and ampicillin-resistant (amp-resistant) Escherichia coli (E. coli) with a promising cationic, π-conjugated polyelectrolyte (P1) with a phenylene-based backbone and investigated the resulting morphological, mechanical, and compositional changes of the outer membrane of bacteria in great detail. The cationic quaternary amine groups of P1 led to electrostatic interactions with negatively charged moieties within the outer membrane of bacteria. Using atomic force microscopy (AFM), high-resolution transmission electron microscopy (TEM), we showed that due to this treatment, the bacterial outer membrane became rougher, decreased in stiffness/elastic modulus (AFM nanoindentation), formed blebs, and released vesicles near the cells. These evidences, in addition to increased staining of the P1-treated cell membrane by lipophilic dye Nile Red (confocal laser scanning microscopy (CLSM)), suggested loosening/disruption of packing of the outer cell envelope and release and exposure of lipid-based components. Lipidomics and fatty acid analysis confirmed a significant loss of phosphate-based outer membrane lipids and fatty acids, some of which are critically needed to maintain cell wall integrity and mechanical strength. Lipidomics and UV-vis analysis also confirmed that the extracellular vesicles released upon treatment (AFM) are composed of lipids and cationic P1. Such surface alterations (vesicle/bleb formation) and release of lipids/fatty acids upon treatment were effective enough to inhibit further growth of E. coli cells without completely disintegrating the cells and have been known as a defense mechanism of the cells against cationic antimicrobial agents.
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Affiliation(s)
- Ehsan Zamani
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Tyler J. Johnson
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Shyambo Chatterjee
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Cheryl Immethun
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Anandakumar Sarella
- Nebraska Center for Materials and Nanoscience, Voelte-Keegan Nanoscience Research Center, University of Nebraska-Lincoln, Lincoln, NE 68588-0298, United States
| | - Rajib Saha
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Shudipto Konika Dishari
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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25
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Butina K, Tomac A, Choong FX, Shirani H, Nilsson KPR, Löffler S, Richter-Dahlfors A. Optotracing for selective fluorescence-based detection, visualization and quantification of live S. aureus in real-time. NPJ Biofilms Microbiomes 2020; 6:35. [PMID: 33037198 PMCID: PMC7547713 DOI: 10.1038/s41522-020-00150-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/10/2020] [Indexed: 11/09/2022] Open
Abstract
Methods for bacterial detection are needed to advance the infection research and diagnostics. Based on conformation-sensitive fluorescent tracer molecules, optotracing was recently established for dynamic detection and visualization of structural amyloids and polysaccharides in the biofilm matrix of gram-negative bacteria. Here, we extend the use of optotracing for detection of gram-positive bacteria, focussing on the clinically relevant opportunistic human pathogen Staphylococcus aureus. We identify a donor-acceptor-donor-type optotracer, whose binding-induced fluorescence enables real-time detection, quantification, and visualization of S. aureus in monoculture and when mixed with gram-negative Salmonella Enteritidis. An algorithm-based automated high-throughput screen of 1920 S. aureus transposon mutants recognized the cell envelope as the binding target, which was corroborated by super-resolution microscopy of bacterial cells and spectroscopic analysis of purified cell wall components. The binding event was essentially governed by hydrophobic interactions, which permitted custom-designed tuning of the binding selectivity towards S. aureus versus Enterococcus faecalis by appropriate selection of buffer conditions. Collectively this work demonstrates optotracing as an enabling technology relevant for any field of basic and applied research, where visualization and detection of S. aureus is needed.
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Affiliation(s)
- Karen Butina
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Ana Tomac
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Ferdinand X Choong
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Hamid Shirani
- Department of Chemistry, IFM, Linköping University, SE-581 83, Linköping, Sweden
| | - K Peter R Nilsson
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Chemistry, IFM, Linköping University, SE-581 83, Linköping, Sweden
| | - Susanne Löffler
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Agneta Richter-Dahlfors
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden. .,Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden.
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26
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Schanze KS, Whitten DG, Kell AM, Chi EY, Ista LK, Monge FA, Jagadesan P, Bondu V, Donabedian PL. Highly Effective Inactivation of SARS-CoV-2 by Conjugated Polymers and Oligomers. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2020:2020.09.29.20204164. [PMID: 33052358 PMCID: PMC7553178 DOI: 10.1101/2020.09.29.20204164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The current Covid-19 Pandemic caused by the highly contagious SARS-CoV-2 virus has proven extremely difficult to prevent or control. Currently there are few treatment options and very few long-lasting disinfectants available to prevent the spread. While masks and protective clothing and social distancing may offer some protection, their use has not always halted or slowed the spread. Several vaccines are currently undergoing testing; however there is still a critical need to provide new methods for inactivating the virus before it can spread and infect humans. In the present study we examined the inactivation of SARS-CoV-2 by synthetic conjugated polymers and oligomers developed in our laboratories as antimicrobials for bacteria, fungi and non-enveloped viruses. Our results show that we can obtain highly effective light induced inactivation with several of these oligomers and polymers including irradiation with near-UV and visible light. With both the oligomers and polymers, we can reach several logs of inactivation with relatively short irradiation times. Our results suggest several applications involving the incorporation of these materials in wipes, sprays, masks and clothing and other Personal Protection Equipment (PPE) that can be useful in preventing infections and the spreading of this deadly virus and future outbreaks from similar viruses.
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27
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The Neutrally Charged Diarylurea Compound PQ401 Kills Antibiotic-Resistant and Antibiotic-Tolerant Staphylococcus aureus. mBio 2020; 11:mBio.01140-20. [PMID: 32605985 PMCID: PMC7327171 DOI: 10.1128/mbio.01140-20] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Membrane-damaging antimicrobial agents have great potential to treat multidrug-resistant or multidrug-tolerant bacteria against which conventional antibiotics are not effective. However, their therapeutic applications are often hampered due to their low selectivity to bacterial over mammalian membranes or their potential for cross-resistance to a broad spectrum of cationic membrane-active antimicrobial agents. We discovered that the diarylurea derivative compound PQ401 has antimicrobial potency against multidrug-resistant and multidrug-tolerant Staphylococcus aureus. PQ401 selectively disrupts bacterial membrane lipid bilayers in comparison to mammalian membranes. Unlike cationic membrane-active antimicrobials, the neutral form of PQ401 rather than its cationic form exhibits maximum membrane activity. Overall, our results demonstrate that PQ401 could be a promising lead compound that overcomes the current limitations of membrane selectivity and cross-resistance. Also, this work provides deeper insight into the design and development of new noncharged membrane-targeting therapeutics to combat hard-to-cure bacterial infections. Resistance or tolerance to traditional antibiotics is a challenging issue in antimicrobial chemotherapy. Moreover, traditional bactericidal antibiotics kill only actively growing bacterial cells, whereas nongrowing metabolically inactive cells are tolerant to and therefore “persist” in the presence of legacy antibiotics. Here, we report that the diarylurea derivative PQ401, previously characterized as an inhibitor of the insulin-like growth factor I receptor, kills both antibiotic-resistant and nongrowing antibiotic-tolerant methicillin-resistant Staphylococcus aureus (MRSA) by lipid bilayer disruption. PQ401 showed several beneficial properties as an antimicrobial lead compound, including rapid killing kinetics, low probability for resistance development, high selectivity to bacterial membranes compared to mammalian membranes, and synergism with gentamicin. In contrast to well-studied membrane-disrupting cationic antimicrobial low-molecular-weight compounds and peptides, molecular dynamic simulations supported by efficacy data demonstrate that the neutral form of PQ401 penetrates and subsequently embeds into bacterial lipid bilayers more effectively than the cationic form. Lastly, PQ401 showed efficacy in both the Caenorhabditis elegans and Galleria mellonella models of MRSA infection. These data suggest that PQ401 may be a lead candidate for repurposing as a membrane-active antimicrobial and has potential for further development as a human antibacterial therapeutic for difficult-to-treat infections caused by both drug-resistant and -tolerant S. aureus.
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28
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Duan S, Zhao X, Su Z, Wang C, Lin Y. Layer-by-Layer Decorated Nanoscale ZIF-8 with High Curcumin Loading Effectively Inactivates Gram-Negative and Gram-Positive Bacteria. ACS APPLIED BIO MATERIALS 2020; 3:3673-3680. [PMID: 35025238 DOI: 10.1021/acsabm.0c00300] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Bacteria-mediated infectious diseases have become a health-care challenge globally since the development of antibiotic resistance. Reactive oxygen species produced by photosensitizers have great potential in fighting bacterial infections, especially against Gram-negative bacteria that are hard to kill by regular methods owing to their formidable defensive membrane structures under the premise of avoiding overuse of antibiotics. In this work, a small molecular photosensitizer, curcumin (CCM), was used as a model and encapsulated into zeolitic imidazolate framework-8 (ZIF-8). Then the ZIF-8 loaded with CCM (CCM@ZIF-8) was decorated with biocompatible polymers hyaluronic acid (HA) and chitosan (CS) by the layer-by-layer self-assembly technique to yeild in an antibacterial CCM@ZIF-8@HA@CS nanoparticle with a high local positive charge density and is capable of binding the surface of bacteria by electrostatic interactions. The CCM drug loading capability of the nanoparticle was found to be as high as 10.89%. Upon exposure to blue light (72 J/cm2) for 10 min, the minimum inhibitory concentration and minimum bactericidal concentration of CCM@ZIF-8@HA@CS against Gram-positive bacteria (G(+)) Staphylococcus aureus (S. aureus) and Gram-negative bacteria (G(-)) Escherichia coli (E. coli) were the same, which were as low as 0.625 and 2.5 μg/mL, respectively, showing highly effective antibacterial activities. After treatment with CCM@ZIF-8@HA@CS under blue-light irradiation, the membranes of S. aureus and E. coli folded and cracked. Importantly, the antibacterial agent showed good biocompatibility in the cytotoxicity test using L929 cells and hemolysis test using rabbit blood cells under blue-light irradiation. Therefore, this CCM@ZIF-8@HA@CS nanocomposite is expected to find application in the treatment of superficial traumatic and refractory chronic infections caused by G(+) and G(-).
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Affiliation(s)
- Shihao Duan
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China.,State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xia Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Zhaohui Su
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Cheng Wang
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Yuan Lin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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29
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Scheberl A, Khalil ML, Maghsoodi F, Strach EW, Yang J, Chi EY, Schanze KS, Reimhult E, Whitten DG. Quantitative Determination of Dark and Light-Activated Antimicrobial Activity of Poly(Phenylene Ethynylene), Polythiophene, and Oligo(Phenylene Ethynylene) Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21322-21329. [PMID: 32259428 DOI: 10.1021/acsami.0c02939] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Much recent effort has been directed toward the development of novel antimicrobial materials able to defeat new and antibiotic resistant pathogens. In this report, we study the efficacy of cationic poly(phenylene ethynylene), polythiophene, and oligo(phenylene ethynylene) electrolytes against laboratory strains of Pseudomonas aeruginosa, Staphylococcus aureus and Staphylococcus epidermidis. The focus of the study is to quantitatively evaluate the speed and extent of dark and light-activated antimicrobial activity. Using cell plating with serial dilutions, we determined that planktonic bacteria suspensions exposed to the antimicrobials (at 10 μg/mL) result in several log kills at 10 min both in the dark and under UV irradiation (360 nm) for all eight synthetic antimicrobials. However, there are significant differences in the ease of killing the different pathogens. In most trials, there is significantly greater killing under light-irradiation, indicating these materials may be used as versatile disinfectants.
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Affiliation(s)
- Andrea Scheberl
- Department of Nanobiotechnology University of Natural Resources and Life Sciences, Vienna (BOKU Wien) Muthgasse 11-II, Vienna A-1190, Austria
| | - Mohammed L Khalil
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
| | - Fahimeh Maghsoodi
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
| | - Edward W Strach
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
| | - Jianzhong Yang
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
| | - Eva Y Chi
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
| | - Kirk S Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Way, San Antonio, Texas 78249, United States
| | - Erik Reimhult
- Department of Nanobiotechnology University of Natural Resources and Life Sciences, Vienna (BOKU Wien) Muthgasse 11-II, Vienna A-1190, Austria
| | - David G Whitten
- Department of Chemical and Biological Engineering Center for Biomedical Engineering University of New Mexico, Albuquerque, New Mexico 87131-1341, United States
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30
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Zhou C, Jiang M, Du J, Bai H, Shan G, Kwok RTK, Chau JHC, Zhang J, Lam JWY, Huang P, Tang BZ. One stone, three birds: one AIEgen with three colors for fast differentiation of three pathogens. Chem Sci 2020; 11:4730-4740. [PMID: 34122928 PMCID: PMC8159167 DOI: 10.1039/d0sc00256a] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/14/2020] [Indexed: 01/02/2023] Open
Abstract
Visually identifying pathogens favors rapid diagnosis at the point-of-care testing level. Here, we developed a microenvironment-sensitive aggregation-induced emission luminogen (AIEgen), namely IQ-Cm, for achieving fast discrimination of Gram-negative bacteria, Gram-positive bacteria and fungi by the naked-eye. With a twisted donor-acceptor and multi-rotor structure, IQ-Cm shows twisted intramolecular charge transfer (TICT) and AIE properties with sensitive fluorescence color response to the microenvironment of pathogens. Driven by the intrinsic structural differences of pathogens, IQ-Cm with a cationic isoquinolinium moiety and a membrane-active coumarin unit as the targeting and interacting groups selectively locates in different sites of three pathogens and gives three naked-eye discernible emission colors. Gram-negative bacteria are weak pink, Gram-positive bacteria are orange-red and fungi are bright yellow. Therefore, based on their distinctive fluorescence response, IQ-Cm can directly discriminate the three pathogens at the cell level under a fluorescence microscope. Furthermore, we demonstrated the feasibility of IQ-Cm as a visual probe for fast diagnosis of urinary tract infections, timely monitoring of hospital-acquired infection processes and fast detection of molds in the food field. This simple visualization strategy based on one single AIEgen provides a promising platform for rapid pathogen detection and point-of-care diagnosis.
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Affiliation(s)
- Chengcheng Zhou
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
| | - Meijuan Jiang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China
| | - Jian Du
- Urinary Surgery, The First Affiliated Hospital of Soochow University Pinghai Road Suzhou 215006 China
| | - Haotian Bai
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
| | - Guogang Shan
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
| | - Joe H C Chau
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Jun Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
| | - Peng Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- HKUST Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 China
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, Guangzhou International Campus, South China University of Technology Guangzhou 510640 China
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31
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Application of Nanoscale Zwitterionic Polyelectrolytes Brush with High Stability and Quantum Yield in Aqueous Solution for Cell Imaging. J CHEM-NY 2020. [DOI: 10.1155/2020/1942791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cationic and zwitterionic polyelectrolytes are synthesized through atom transfer radical polymerization (ATRP), comprising a polyfluorene backbone with a small fraction of 2,1,3-benzothiadiazole and poly[2-(dimethylamino)ethyl methacrylate] (PDMAEMA) side chains. Due to higher charge density generated from grafted side chains, two polymers show higher water solubility and higher quantum yield. In comparison with cationic polyelectrolytes, zwitterionic polyelectrolytes are stable over a broad pH range from 1 to 13, even in 1 M NaCl solution. The absence of FRET between zwitterionic polymers and dye-labeled ssDNA indicates their ultralow nonspecific adsorption, while cationic polymer shows much stronger nonspecific interactions. The MTT assay of zwitterionic polymers exhibits their minimal cytotoxicity and potential in long-term clinical application. Most importantly, zwitterionic polymer could be efficiently taken up by cells, whereas cationic polymer stains the surface of cell due to membrane disruption generated from positive charges. The results illustrate that conjugated zwitterionic polymer could serve as a novel type of highly efficient ultralow fouling material with low cytotoxicity for labelling cell or potential biomedical applications.
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32
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Hassoun S, Karam P. Fluorescent-Based Thermal Sensing in Lipid Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1221-1226. [PMID: 31941281 DOI: 10.1021/acs.langmuir.9b03128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thermal mapping in biological membranes could unlock and help us understand many chemical and physical processes that do not only pertain to localized membrane phenomena but also extend to many other intra- and extracellular pathways. In this manuscript, we report the development of a ratiometric thermal fluorescent probe based on the Förster resonance energy transfer between a lipid-embedded conjugated polyelectrolyte and a lyophilic acceptor dye. We showed that the Förster resonance energy transfer (FRET) pair is sensitive within the relevant physiological temperature window (20.0-50.0 °C). The signal was also shielded from an external pH and stable when cycled multiple times. The probe was also sensitive to the membrane composition and could, therefore, be further developed to probe the membrane composition and viscosity.
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Affiliation(s)
- Sarriah Hassoun
- Chemistry Department , American University of Beirut , P.O. Box 11-0236, Riad El-Solh , 1107 2020 Beirut , Lebanon
| | - Pierre Karam
- Chemistry Department , American University of Beirut , P.O. Box 11-0236, Riad El-Solh , 1107 2020 Beirut , Lebanon
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33
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Panigrahi A, Are VN, Jain S, Nayak D, Giri S, Sarma TK. Cationic Organic Nanoaggregates as AIE Luminogens for Wash-Free Imaging of Bacteria and Broad-Spectrum Antimicrobial Application. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5389-5402. [PMID: 31931570 DOI: 10.1021/acsami.9b15629] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The increase in the use of bactericides is a matter of grave concern and a serious threat to human health. The present situation demands rapid and efficient detection and elimination of antibiotic-resistant microbes. Herein, we report the synthesis of a simple C3-symmetric molecular system (TGP) with an intrinsic positive charge through a single-step Schiff base condensation. In a water-dimethyl sulfoxide (DMSO) solvent mixture (80:20 v/v), TGP molecules self-aggregate to form spherical nanoparticles with a positively charged surface that displays efficient fluorescence owing to the aggregation-induced emission (AIE) phenomenon. Both Gram-positive and Gram-negative bacteria could be effectively detected through "turn-off" fluorescence spectroscopy as the electrostatic interaction of the resultant nanoaggregates with the negatively charged bacterial surface induced quenching of fluorescence of the nanoparticles. The fluorescence analysis and steady-state lifetime studies of TGP nanoparticles suggest that a nonradiative decay through photoinduced electron transfer from the nanoparticles to the bacterial surface leads to effective fluorescence quenching. Further, the TGP nanoaggregates demonstrate potent antimicrobial activity against microbes such as multidrug-resistant bacteria and fungi at a concentration as low as 74 μg/mL. A combination of factors including ionic surface characteristics of the nanoparticles for strong electrostatic binding on the bacterial surface followed by possible photoinduced electron transfer from the nanoaggregates to the bacterial membrane and enhanced oxidative stress in the membrane resulting from reactive oxygen species (ROS) generation is found accountable for the high antimicrobial activity of the TGP nanoparticles. The effective disruption of membrane integrity in both Gram-positive and Gram-negative bacteria upon interaction with the nanoaggregates can be observed from field emission scanning electron microscopy (FESEM) studies. The development of simple pathways for the molecular design of multifunctional broad-spectrum antimicrobial systems for rapid and real-time detection, wash-free imaging, and eradication of drug-resistant microbes might be crucial to combat pathogenic agents.
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Affiliation(s)
- Abhiram Panigrahi
- Discipline of Chemistry , Indian Institute of Technology Indore , Simrol, Khandwa Road , Indore 453552 , India
| | - Venkata N Are
- Centre of Biosciences and Biomedical Engineering , Indian Institute of Technology Indore , Simrol, Khandwa Road , Indore 453552 , India
| | - Siddarth Jain
- Discipline of Chemistry , Indian Institute of Technology Indore , Simrol, Khandwa Road , Indore 453552 , India
| | - Debasis Nayak
- Centre of Biosciences and Biomedical Engineering , Indian Institute of Technology Indore , Simrol, Khandwa Road , Indore 453552 , India
| | - Santanab Giri
- School of Applied Sciences and Humanities , Haldia Institute of Technology , Haldia 721657 , West Bengal , India
| | - Tridib K Sarma
- Discipline of Chemistry , Indian Institute of Technology Indore , Simrol, Khandwa Road , Indore 453552 , India
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Mal A, Saha A, Dinda G, Ghosh S. Effect of carbohydrate based polymers on worm-like micelles of cetyltrimethylammonium p-toluenesulfonate in aqueous media: Detail physicochemical and antimicrobial properties survey. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Cationic conjugated polymers for enhancing beneficial bacteria adhesion and biofilm formation in gut microbiota. Colloids Surf B Biointerfaces 2020; 188:110815. [PMID: 31986332 DOI: 10.1016/j.colsurfb.2020.110815] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/13/2019] [Accepted: 01/19/2020] [Indexed: 11/20/2022]
Abstract
It is important to develop efficient therapeutic methods to maintain a healthy balance among gut microbiota by increasing the beneficial bacteria and decreasing the harmful bacteria. In this work, a cationic polythiophene derivative poly(3-(3'-N,N,N-triethylamino-1'-propyloxy)-4-methyl-2,5-thiophene hydrochloride) (PMNT) with quaternary ammonium groups as side chains has been used for efficiently promoting the initial adhesion and biofilm formation of beneficial bacteria in gut microbiota. Upon addition of PMNT, three species of gut microbiota have an increased biofilm formation ability (216.5 % for Escherichia coli (E. coli), 130.7 % for Bifidobacterium infantis (B. infants) and 47.6 % for Enterococcus faecalis (E. faecalis)). As the initial adhesion of bacteria to a surface is an essential step during biofilm formation, PMNT can promote the attachment of bacteria by forming bacteria /PMNT aggregates which possess more cell-to-cell interactions. RNA sequencing results of bacteria within biofilm indicate that the utilization of carbohydrate and glycan is accelerated in the presence of PMNT, leading to enhanced quorum sensing and biofilm formation of E. coli. After forming biofilm, beneficial bacteria have an enhanced resistance to adverse environmental conditions which is significant for maintaining the balance of gut microbiota. Conjugated polymers exhibit a good potential application in modulating the balance of gut microbiota and development of new probiotics drugs.
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36
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Ren B, Li K, Liu Z, Liu G, Wang H. White light-triggered zwitterionic polymer nanoparticles based on an AIE-active photosensitizer for photodynamic antimicrobial therapy. J Mater Chem B 2020; 8:10754-10763. [DOI: 10.1039/d0tb02272a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Photodynamic antimicrobial therapy (PDAT) has received enormous attention due to its excellent spatiotemporal accuracy, non-invasiveness, and anti-multidrug resistance properties compared with chemotherapy.
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Affiliation(s)
- Bibo Ren
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Kaijun Li
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Zheng Liu
- Jiangsu Province Special Equipment Safety Supervision and Inspection Institute
- Wuxi 214170
- P. R. China
| | - Gongyan Liu
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University
| | - Haibo Wang
- College of Biomass Science and Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University
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37
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Xiong W, Wang L, Chen X, Tang H, Cao D, Zhang G, Chen W. Pyridinium-substituted tetraphenylethylene salt-based photosensitizers by varying counter anions: a highly efficient photodynamic therapy for cancer cell ablation and bacterial inactivation. J Mater Chem B 2020; 8:5234-5244. [DOI: 10.1039/d0tb00888e] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A highly efficient photodynamic therapy of cancer cell ablation and bacterial inactivation by two AIEgens was reported.
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Affiliation(s)
- Wei Xiong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Lingyun Wang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Xiaoli Chen
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Hao Tang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Derong Cao
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials
- CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Wei Chen
- Department of Physics
- The University of Texas at Arlington
- Arlington
- USA
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Zamani E, Chatterjee S, Changa T, Immethun C, Sarella A, Saha R, Dishari SK. Mechanistic Understanding of the Interactions of Cationic Conjugated Oligo- and Polyelectrolytes with Wild-type and Ampicillin-resistant Escherichia coli. Sci Rep 2019; 9:20411. [PMID: 31892737 PMCID: PMC6938524 DOI: 10.1038/s41598-019-56946-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 12/06/2019] [Indexed: 01/10/2023] Open
Abstract
An in-depth understanding of cell-drug binding modes and action mechanisms can potentially guide the future design of novel drugs and antimicrobial materials and help to combat antibiotic resistance. Light-harvesting π-conjugated molecules have been demonstrated for their antimicrobial effects, but their impact on bacterial outer cell envelope needs to be studied in detail. Here, we synthesized poly(phenylene) based model cationic conjugated oligo- (2QA-CCOE, 4QA-CCOE) and polyelectrolytes (CCPE), and systematically explored their interactions with the outer cell membrane of wild-type and ampicillin (amp)-resistant Gram-negative bacteria, Escherichia coli (E. coli). Incubation of the E. coli cells in CCOE/CCPE solution inhibited the subsequent bacterial growth in LB media. About 99% growth inhibition was achieved if amp-resistant E. coli was treated for ~3-5 min, 1 h and 6 h with 100 μM of CCPE, 4QA-CCOE, and 2QA-CCOE solutions, respectively. Interestingly, these CCPE and CCOEs inhibited the growth of both wild-type and amp-resistant E. coli to a similar extent. A large surface charge reversal of bacteria upon treatment with CCPE suggested the formation of a coating of CCPE on the outer surface of bacteria; while a low reversal of bacterial surface charge suggested intercalation of CCOEs within the lipid bilayer of bacteria.
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Affiliation(s)
- Ehsan Zamani
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States
| | - Shyambo Chatterjee
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States
| | - Taity Changa
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States
| | - Cheryl Immethun
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States
| | - Anandakumar Sarella
- Nebraska Center for Materials and Nanoscience, Voelte-Keegan Nanoscience Research Center, University of Nebraska-Lincoln, Lincoln, NE, 68588-0298, United States
| | - Rajib Saha
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States
| | - Shudipto Konika Dishari
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States.
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Kang M, Zhou C, Wu S, Yu B, Zhang Z, Song N, Lee MMS, Xu W, Xu FJ, Wang D, Wang L, Tang BZ. Evaluation of Structure-Function Relationships of Aggregation-Induced Emission Luminogens for Simultaneous Dual Applications of Specific Discrimination and Efficient Photodynamic Killing of Gram-Positive Bacteria. J Am Chem Soc 2019; 141:16781-16789. [PMID: 31553608 DOI: 10.1021/jacs.9b07162] [Citation(s) in RCA: 226] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Bacterial infectious diseases, especially those caused by Gram-positive bacteria, have been seriously threatening human health. Preparation of a multifunctional system bearing both rapid bacterial differentiation and effective antibacterial effects is highly in demand, but remains a severe challenge. Herein, we rationally designed and successfully developed a sequence of aggregation-induced emission luminogens (AIEgens) with orderly enhanced D-A strength. Evaluation of structure-function relationships reveals that AIEgens having intrinsic positive charge and proper ClogP value are able to stain Gram-positive bacteria. Meanwhile, one of the presented AIEgens (TTPy) can generate reactive oxygen species (ROS) in extraordinarily high efficiency under white light irradiation due to the smaller singlet-triplet energy gap. Thanks to the NIR emission, excellent specificity to Gram-positive bacteria, and effective ROS generation efficiency, TTPy has been proved to perform well in selective photodynamic killing of Gram-positive bacteria in vitro, such as S. aureus and S. epidermidis, even in S. aureus-infected rat wounds.
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Affiliation(s)
- Miaomiao Kang
- Center for AIE Research, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , China.,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Chengcheng Zhou
- Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Shuangmei Wu
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Bingran Yu
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Zhijun Zhang
- Center for AIE Research, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , China.,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Nan Song
- Center for AIE Research, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , China.,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Michelle Mei Suet Lee
- Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Wenhan Xu
- Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
| | - Fu-Jian Xu
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Dong Wang
- Center for AIE Research, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Lei Wang
- Center for AIE Research, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Ben Zhong Tang
- Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Department of Chemistry, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong 999077 , China
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40
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Zhao Q, Zhao Y, Lu Z, Tang Y. Amino Acid-Modified Conjugated Oligomer Self-Assembly Hydrogel for Efficient Capture and Specific Killing of Antibiotic-Resistant Bacteria. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16320-16327. [PMID: 30985103 DOI: 10.1021/acsami.9b02643] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bacterial infection is one of main causes that threaten global human health. Especially, antibiotic-resistant bacteria like methicillin-resistant Staphylococcus aureus (MRSA) lead to high mortality rate and more expensive treatment cost. Here, a novel amino-acid-modified conjugated oligomer OTE-d-Phe was synthesized by modifying the side chain of conjugated oligo(thiophene ethynylene) with d-phenylalanine. By mixing 9-fluorenylmethyloxycarbonyl-l-phenylalanin (Fmoc-l-Phe) with OTE-d-Phe, a new and biocompatible low-molecular weight hydrogel (HG-2) was prepared through self-assembly. In solution, HG-2 can effectively capture bacteria spontaneously, such as Escherichia coli and MRSA. Most importantly, the hydrogel has specific and strong antibacterial activity against MRSA over methicillin-susceptible S. aureus, Staphylococcus epidermidis, and E. coli. Interestingly, when the hydrogel was put on a model surface, a piece of cloth, it also is able to selectively kill MRSA with low cell cytotoxicity. The antibacterial mechanism was investigated, and it demonstrated that the HG-2 interacts with and physically breaks the cell wall and membrane, which leads to MRSA death. Therefore, this new conjugated oligomer-based hydrogel provides promising applications in disinfection and therapy of MRSA in hospital and in community.
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Affiliation(s)
- Qi Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P. R. China
| | - Yantao Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P. R. China
| | - Zhuanning Lu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P. R. China
| | - Yanli Tang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P. R. China
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41
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Zeglio E, Rutz AL, Winkler TE, Malliaras GG, Herland A. Conjugated Polymers for Assessing and Controlling Biological Functions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806712. [PMID: 30861237 DOI: 10.1002/adma.201806712] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/15/2019] [Indexed: 05/20/2023]
Abstract
The field of organic bioelectronics is advancing rapidly in the development of materials and devices to precisely monitor and control biological signals. Electronics and biology can interact on multiple levels: organs, complex tissues, cells, cell membranes, proteins, and even small molecules. Compared to traditional electronic materials such as metals and inorganic semiconductors, conjugated polymers (CPs) have several key advantages for biological interactions: tunable physiochemical properties, adjustable form factors, and mixed conductivity (ionic and electronic). Herein, the use of CPs in five biologically oriented research topics, electrophysiology, tissue engineering, drug release, biosensing, and molecular bioelectronics, is discussed. In electrophysiology, implantable devices with CP coating or CP-only electrodes are showing improvements in signal performance and tissue interfaces. CP-based scaffolds supply highly favorable static or even dynamic interfaces for tissue engineering. CPs also enable delivery of drugs through a variety of mechanisms and form factors. For biosensing, CPs offer new possibilities to incorporate biological sensing elements in a conducting matrix. Molecular bioelectronics is today used to incorporate (opto)electronic functions in living tissue. Under each topic, the limits of the utility of CPs are discussed and, overall, the major challenges toward implementation of CPs and their devices to real-world applications are highlighted.
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Affiliation(s)
- Erica Zeglio
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - Alexandra L Rutz
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Thomas E Winkler
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - George G Malliaras
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Anna Herland
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institute, 17177, Stockholm, Sweden
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Whitten DG, Tang Y, Zhou Z, Yang J, Wang Y, Hill EH, Pappas HC, Donabedian PL, Chi EY. A Retrospective: 10 Years of Oligo(phenylene-ethynylene) Electrolytes: Demystifying Nanomaterials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:307-325. [PMID: 30056722 DOI: 10.1021/acs.langmuir.8b01810] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this retrospective, we first reviewed the synthesis of the oligo(phenylene-ethynylene) electrolytes (OPEs) we created in the past 10 years. Since the general antimicrobial activity of these OPEs had been reported in our previous account in Langmuir, we are focusing only on the unusual spectroscopic and photophysical properties of these OPEs and their complexes with anionic scaffolds and detergents in this Feature Article. We applied classical all-atom MD simulations to study the hydrogen bonding environment in the water surrounding the OPEs with and without detergents present. Our finding is that OPEs could form a unit cluster or unit aggregate with a few oppositely charged detergent molecules, indicating that the photostability and photoreactivity of these OPEs might be considerably altered with important consequences to their activity as antimicrobials and fluorescence-based sensors. Thus, in the following sections, we showed that OPE complexes with detergents exhibit enhanced light-activated biocidal activity compared to either OPE or detergent individually. We also found that similar complexes between certain OPEs and biolipids could be used to construct sensors for the enzyme activity. Finally, the OPEs could covalently bind to microsphere surfaces to make a bactericidal surface, which is simpler and more ordered than the surface grafted from microspheres with polyelectrolytes. In the Conclusions and Prospects section, we briefly summarize the properties of OPEs developed so far and future areas for investigation.
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Affiliation(s)
- David G Whitten
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Yanli Tang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Zhijun Zhou
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Jianzhong Yang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Ying Wang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Eric H Hill
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Harry C Pappas
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Patrick L Donabedian
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Eva Y Chi
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
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43
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Song HQ, Shao MY, Li Y, Ding XJ, Xu FJ. Multifunctional Delivery Nanosystems Formed by Degradable Antibacterial Poly(Aspartic Acid) Derivatives for Infected Skin Defect Therapy. Adv Healthc Mater 2019; 8:e1800889. [PMID: 30474285 DOI: 10.1002/adhm.201800889] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/19/2018] [Indexed: 12/31/2022]
Abstract
Nucleic acid (NA)-based therapy is promising for tissue repair, such as skin and bone defect therapy. However, bacterial infections often occur in the process of tissue healing. The ideal treatment of tissue repair requires both anti-infection and simultaneous tissue healing. The epidermal growth factor (EGF) plays an important role in wound healing processes. In this work, degradable antibacterial gene vectors based on tobramycin (clinically relevant antibiotic) conjugated poly(aspartic acid) (TPT) are proposed as multifunctional delivery nanosystems of plasmid encoding EGF (pEGF) to realize the antibacterial therapy and tissue healing of infected skin defects. TPT has low cytotoxicity and good degradability, which is helpful in the NA delivery process. TPT demonstrates good transfection performances and hemocompatibility, as well as excellent antibacterial activities in vitro. The outstanding pEGF delivery ability of TPT and the bioactivity of expressed EGF facilitate the proliferation of fibroblast cells. The effective in vivo infected skin defect therapy is also demonstrated with TPT/pEGF nanocomplexes, where skin tissue healing is promoted. The present work opens new avenues for the design of multifunctional delivery nanosystems with antibacterial ability to treat infected tissue defect.
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Affiliation(s)
- Hai-Qing Song
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology); Ministry of Education; Beijing Laboratory of Biomedical Materials, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Mei-Yu Shao
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology); Ministry of Education; Beijing Laboratory of Biomedical Materials, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yang Li
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology); Ministry of Education; Beijing Laboratory of Biomedical Materials, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Xue-Jia Ding
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology); Ministry of Education; Beijing Laboratory of Biomedical Materials, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology); Ministry of Education; Beijing Laboratory of Biomedical Materials, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
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Chen J, Shan J, Xu Y, Su P, Tong L, Yuwen L, Weng L, Bao B, Wang L. Polyhedral Oligomeric Silsesquioxane (POSS)-Based Cationic Conjugated Oligoelectrolyte/Porphyrin for Efficient Energy Transfer and Multiamplified Antimicrobial Activity. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34455-34463. [PMID: 30211531 DOI: 10.1021/acsami.8b09185] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cationic quaternary ammonium (QA) groups and reactive oxygen species as two main approaches for antibacterial study have been intensively studied. Herein, we report a multifunctional antimicrobial agent (porphyrin-POSS-OPVE, PPO), which combines bacterial membrane intercalation, high density of local QA groups, efficient energy transfer, significantly reduced aggregation, and high water solubility into one single molecule. The light-harvesting PPO contains multiple donor-absorbing arms (oligo( p-phenylenevinylene) electrolytes, OPVEs) on its globular periphery and a central porphyrin acceptor in the core by using three-dimensional nanocages (polyhedral oligomeric silsesquioxanes, POSSs) as bridges. The antiaggregation ability of POSS and the highly efficient energy transfer from multiple OPVE arms to porphyrin could greatly amplify singlet oxygen generation in PPO. Particularly, OPVEs with QA terminal chains were able to intercalate into Escherichia coli membranes, which facilitated 1O2 diffusion and bacterial cell membrane disintegration by QA groups. The increased local cationic QA charges in OPVE arms can also enhance the biocidal activity of PPO. Benefiting from these satisfactory features, PPO exhibits multiamplified antibacterial efficacy under a very low concentration level and white light dose (400-700 nm, 6 mW·cm-2, 5 min, 1.8 J·cm-2) to Escherichia coli (8 μM) and Staphylococcus aureus (500 nM). Therefore, PPO shows great potential for photodynamic antimicrobial chemotherapy at a much lower irradiation light dose and photosensitizer concentration level compared to previous reports.
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Affiliation(s)
- Jia Chen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Jingyang Shan
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Yu Xu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Peng Su
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Li Tong
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lihui Yuwen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lixing Weng
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Biqing Bao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , Jiangsu , China
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Zehra N, Dutta D, Malik AH, Ghosh SS, Iyer PK. Fluorescence Resonance Energy Transfer-Based Wash-Free Bacterial Imaging and Antibacterial Application Using a Cationic Conjugated Polyelectrolyte. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27603-27611. [PMID: 30052034 DOI: 10.1021/acsami.8b07516] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The increase in bacterial infection and antibiotic resistance has posed a severe threat to the human health. This threat has warranted an imperative demand for the development of a new and effective bactericidal material to eradicate the antibiotic-resistant pathogenic bacteria. In this work, we report the wash-free imaging of Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) bacteria using cationic conjugated polyelectrolyte[9,9-bis(6'-methylimidazoliumbromide)hexyl-fluorene- co-4,7-(2,1,3-benzothiadiazole)] (PFBT-MI) based on aggregation-induced fluorescence resonance energy transfer (FRET). Cationic imidazolium group strapped on the polymer side chain not only increases its solubility in water but also helps in binding with the negatively charged bacterial membrane via electrostatic interactions to turn on its bright yellow emission. The change in the fluorescence color of conjugated polyelectrolyte in the presence of bacteria could be visualized very easily via naked eyes under a UV lamp (365 nm). Furthermore, the antibacterial activity of PFBT-MI against both S. aureus and E. coli was observed because of the amphiphilic nature of the conjugated polyelectrolyte which in turn is due to the presence of ionic functionality and conjugated polymer backbone that can intercalate very proficiently into the bacterial membrane, which disrupts the membrane integrity and thus results in toxicity. Morphologically, the membrane damage was perceived via field emission scanning electron microscopy (FESEM) images, which clearly indicated the disruption of cell membrane upon exposure to PFBT-MI. The PFBT-MI acts as an effective antibacterial agent, with a minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) value of (30 μM or 23.7 μg/mL) and (60 μM or 47.7 μg/mL) for S. aureus and for E. coli (60 μM or 47.7 μg/mL) and (100 μM or 79 μg/mL), respectively. Moreover, PFBT-MI shows less cytotoxicity against mammalian cells at concentration greater than MIC.
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Kang M, Kwok RTK, Wang J, Zhang H, Lam JWY, Li Y, Zhang P, Zou H, Gu X, Li F, Tang BZ. A multifunctional luminogen with aggregation-induced emission characteristics for selective imaging and photodynamic killing of both cancer cells and Gram-positive bacteria. J Mater Chem B 2018; 6:3894-3903. [PMID: 32254317 DOI: 10.1039/c8tb00572a] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The increasing impact of bacteria on cancer progression and treatments has been witnessed in recent years. Insufficient attention to cancer-related bacteria may lead to distant metastasis, poor therapeutic efficiency and low survival rates for cancers. Exploiting new approaches that enable selective imaging and effective killing of cancer cells and bacteria are thus of great value for the battle against cancers. Herein, we report an aggregation-induced emission (AIE) luminogen, namely TPPCN, with intense emission and efficient reactive oxygen species production for fluorescence imaging and killing cancer cells and Gram-positive bacteria. This work not only demonstrates the potential of AIE luminogens in comprehensive cancer treatments but also stimulates the enthusiasm of scientists to design more multifunctional AIE systems for both cancer and bacteria theranostics.
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Affiliation(s)
- Miaomiao Kang
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
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Damavandi M, Pilkington LI, Whitehead KA, Wilson-Nieuwenhuis J, McBrearty J, Dempsey-Hibbert N, Travis-Sejdic J, Barker D. Poly(para-phenylene ethynylene) (PPE)- and poly(para-phenylene vinylene) (PPV)-poly[(2-(methacryloyloxy)ethyl) trimethylammonium chloride] (PMETAC) graft copolymers exhibit selective antimicrobial activity. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Gallagher TM, Marafino JN, Wimbish BK, Volkers B, Fitzgerald G, McKenna K, Floyd J, Minahan NT, Walsh B, Thompson K, Bruno D, Paneru M, Djikeng S, Masters S, Haji S, Seifert K, Caran KL. Hydra amphiphiles: Using three heads and one tail to influence aggregate formation and to kill pathogenic bacteria. Colloids Surf B Biointerfaces 2017. [PMID: 28645045 DOI: 10.1016/j.colsurfb.2017.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hydra amphiphiles mimic the morphology of the mythical multi-headed creatures for which they are named. Likewise, when faced with a pathogenic bacterium, some hydra derivatives are as destructive as their fabled counterparts were to their adversaries. This report focuses on eight new tricephalic (triple-headed), single-tailed amphiphiles. Each amphiphile has a mesitylene (1,3,5-trimethylbenzene) core, two benzylic trimethylammonium groups and one dimethylalkylammonium group with a linear hydrophobe ranging from short (C8H17) to ultralong (C22H45). The logarithm of the critical aggregation concentration, log(CAC), decreases linearly with increasing tail length, but with a smaller dependence than that of ionic amphiphiles with fewer head groups. Tail length also affects antibacterial activity; amphiphiles with a linear 18 or 20 carbon atom hydrophobic chain are more effective at killing bacteria than those with shorter or longer chains. Comparison to a recently reported amphiphilic series with three heads and two tails allows for the development of an understanding of the relationship between number of tails and both colloidal and antibacterial properties.
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Affiliation(s)
- Tara M Gallagher
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - John N Marafino
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA; James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Brenden K Wimbish
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Brandi Volkers
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Gabriel Fitzgerald
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Kristin McKenna
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Jason Floyd
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Nicholas T Minahan
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Brenna Walsh
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Kirstie Thompson
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - David Bruno
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA
| | - Monica Paneru
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Sybelle Djikeng
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Stephanie Masters
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Suma Haji
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA
| | - Kyle Seifert
- James Madison University, Department of Biology, 951 Carrier Drive, MSC 7801, Harrisonburg, VA 22807, USA.
| | - Kevin L Caran
- James Madison University, Department of Chemistry and Biochemistry, 901 Carrier Drive, MSC 4501, Harrisonburg, VA 22807, USA.
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Bai H, Chen H, Hu R, Li M, Lv F, Liu L, Wang S. Supramolecular Conjugated Polymer Materials for in Situ Pathogen Detection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31550-31557. [PMID: 27787974 DOI: 10.1021/acsami.6b09807] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cationic poly(fluorene-co-phenylene) derivative (PFP-NMe3+) forms a supramolecular complex with cucurbit[7]uril (CB[7]), which could be reversibly disassembled by amantadine (AD) to release PFP-NMe3+ due to the formation of more stable CB[7]/AD complex. The cationic PFP-NMe3+ is an amphiphilic structure and could bind to negatively charged membrane of pathogen by multivalent interactions. Upon the formation of PFP-NMe3+/CB[7] complex, the CB[7] could bury the side-chain alkyl groups and decreases the hydrophobic interactions of PFP-NMe3+ on the surface of pathogens; thus, PFP-NMe3+ exhibits different interaction modes with pathogens before and after assembly with CB[7]. The PFP-NMe3+/CB[7] supramolecular complex could be explored as optical sensor for simple, rapid, and in situ detection and discrimination of multiple pathogens by taking advantage of optical signal changes of PFP-NMe3+/CB[7] complex before and after disassembly by AD on the pathogen surfaces. The new sensor can realize in situ detection and identification of Gram-negative bacteria (E. coli, P. aeruginosa), Gram-positive bacteria (B. subtilis, S. aureus, E. faecalis), and the fungi (C. albicans, S. cerecisiae) and can also discriminate different strains of the same species. Blend samples of these pathogens could be identified successfully as well. In comparison with conventional blood culture-based pathogen assay methods that require at least for 24 h, the PFP-NMe3+/CB[7] complex only needs 2 h (including pathogen culture, pathogen harvest by centrifuging, and optical assay procedures) to stratify diverse pathogen types and also does not require specific biomarkers or cell labeling.
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Affiliation(s)
- Haotian Bai
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Hui Chen
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Rong Hu
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Meng Li
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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Hoque J, Akkapeddi P, Ghosh C, Uppu DSSM, Haldar J. A Biodegradable Polycationic Paint that Kills Bacteria in Vitro and in Vivo. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29298-29309. [PMID: 27709890 DOI: 10.1021/acsami.6b09804] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bacterial colonization and subsequent formation of biofilms onto surfaces of medical devices and implants is a major source of nosocomial infections. Most antibacterial coatings to combat infections are either metal-based or nondegradable-polymer-based and hence limited by their nondegradability and unpredictable toxicity. Moreover, to combat infections effectively, the coatings are required to display simultaneous antibacterial and antibiofilm activity. Herein we report biocompatible and biodegradable coatings based on organo-soluble quaternary chitin polymers which were immobilized noncovalently onto surfaces as bactericidal paint. The polycationic paint was found to be active against both drug-sensitive and -resistant bacteria such as methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium (VRE), and β-lactam-resistant Klebsiella pneumoniae. The cationic polymers were shown to interact with the negatively charged bacterial cell membrane and disrupt the membrane integrity, thereby causing leakage of intracellular constituents and cell death upon contact. Importantly, surfaces coated with the polymers inhibited formation of biofilms against both Gram-positive S. aureus and Gram-negative E. coli, two of the most clinically important bacteria that form biofilms. Surfaces coated with the polymers displayed negligible toxicity against human erythrocytes and embryo kidney cells. Notably, the polymers were shown to be susceptible toward lysozyme. Furthermore, subcutaneous implantation of polymer discs in rats led to 15-20% degradation in 4 weeks thereby displaying their biodegradability. In a murine model of subcutaneous infection, polymer-coated medical-grade catheter reduced MRSA burden by 3.7 log compared to that of noncoated catheter. Furthermore, no biofilm development was observed on the coated catheters under in vivo conditions. The polycationic materials thus developed herein represent a novel class of safe and effective coating agents for the prevention of device-associated infections.
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Affiliation(s)
- Jiaul Hoque
- Chemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064, India
| | - Padma Akkapeddi
- Chemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064, India
| | - Chandradhish Ghosh
- Chemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064, India
| | - Divakara S S M Uppu
- 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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