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Wu M, Kong X, Li H, Ji Y, He S, Shi Y, Hu H. Cyclic peptide conjugated photosensitizer for targeted phototheranostics of gram-negative bacterial infection. Bioorg Chem 2024; 145:107203. [PMID: 38377817 DOI: 10.1016/j.bioorg.2024.107203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/04/2024] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Antimicrobial photodynamic therapy (PDT) is a promising alternative to antibiotics for eradicating pathogenic bacterial infections. It holds advantage of not inducing antimicrobial resistance but is limited for the treatment of gram-negative bacterial infection due to the lack of photosensitizer (PS) capable of targeted permeating the outer membrane (OM) of gram-negative bacteria. To facilitate the targeted permeability of PS, cyclic polymyxin b nonapeptide that can specifically bind to the lipopolysaccharide on OM, is conjugated to an FDA approved PS chlorin e6 via variable linkers. Based on structure to activity study, C6pCe6 with aminohexanoic linker and P2pCe6 with amino-3, 6-dioxaoctanoic linker are identified to preferentially image gram-negative bacteria. These two conjugates also exhibit improved aqueous dispersity and enhanced ROS generation, consequently enabled their selective bactericidal activities against gram-negative bacteria upon 660 nm light irradiation. The effective photobactericidal ability of P2pCe6 is further validated on P. aeruginosa infected G. mellonella. Moreover, it is demonstrated to effectively treat the P. aeruginosa infection and accelerate the healing process at the wound site of mouse. Owing to the light irradiation triggered targeted imaging and enhanced bactericidal capacities, P2pCe6 hold great potential to serve as a potent PS for mediating the phototheranostics of gram-negative bacterial infection.
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Affiliation(s)
- Minghao Wu
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China; School of Medicine, Shanghai University, Shanghai 200444, China
| | - Xiangxiang Kong
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China; School of Medicine, Shanghai University, Shanghai 200444, China
| | - Huang Li
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China; School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yajing Ji
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China; School of Medicine, Shanghai University, Shanghai 200444, China
| | - Shipeng He
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Yejiao Shi
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China.
| | - Honggang Hu
- School of Medicine, Shanghai University, Shanghai 200444, China.
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2
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Savelyeva IO, Zhdanova KA, Gradova MA, Gradov OV, Bragina NA. Cationic Porphyrins as Antimicrobial and Antiviral Agents in Photodynamic Therapy. Curr Issues Mol Biol 2023; 45:9793-9822. [PMID: 38132458 PMCID: PMC10741785 DOI: 10.3390/cimb45120612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
Antimicrobial photodynamic therapy (APDT) has received a great deal of attention due to its unique ability to kill all currently known classes of microorganisms. To date, infectious diseases caused by bacteria and viruses are one of the main sources of high mortality, mass epidemics and global pandemics among humans. Every year, the emergence of three to four previously unknown species of viruses dangerous to humans is recorded, totaling more than 2/3 of all newly discovered human pathogens. The emergence of bacteria with multidrug resistance leads to the rapid obsolescence of antibiotics and the need to create new types of antibiotics. From this point of view, photodynamic inactivation of viruses and bacteria is of particular interest. This review summarizes the most relevant mechanisms of antiviral and antibacterial action of APDT, molecular targets and correlation between the structure of cationic porphyrins and their photodynamic activity.
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Affiliation(s)
- Inga O. Savelyeva
- Institute of Fine Chemical Technology, MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (K.A.Z.); (N.A.B.)
| | - Kseniya A. Zhdanova
- Institute of Fine Chemical Technology, MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (K.A.Z.); (N.A.B.)
| | - Margarita A. Gradova
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosygin Street 4, Moscow 119991, Russia;
| | - Oleg V. Gradov
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosygin Street 4, Moscow 119991, Russia;
| | - Natal’ya A. Bragina
- Institute of Fine Chemical Technology, MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (K.A.Z.); (N.A.B.)
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3
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Grimmeisen M, Jessen-Trefzer C. Increasing the Selectivity of Light-Active Antimicrobial Agents - Or How To Get a Photosensitizer to the Desired Target. Chembiochem 2023; 24:e202300177. [PMID: 37132365 DOI: 10.1002/cbic.202300177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/04/2023]
Abstract
Photosensitizers combine the inherent reactivity of reactive oxygen species with the sophisticated reaction control of light. Through selective targeting, these light-active molecules have the potential to overcome certain limitations in drug discovery. Ongoing advances in the synthesis and evaluation of photosensitizer conjugates with biomolecules such as antibodies, peptides, or small-molecule drugs are leading to increasingly powerful agents for the eradication of a growing number of microbial species. This review article, therefore, summarizes challenges and opportunities in the development of selective photosensitizers and their conjugates described in recent literature. This provides adequate insight for newcomers and those interested in this field.
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Affiliation(s)
- Michael Grimmeisen
- University of Freiburg, Faculty of Chemistry and Pharmacy, Institute of Organic Chemistry, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
| | - Claudia Jessen-Trefzer
- University of Freiburg, Faculty of Chemistry and Pharmacy, Institute of Organic Chemistry, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
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4
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Yang L, Luo Y, Zhou Y, Huang C, Shen X. Specific nanoantibiotics for selective removal of antibiotic-resistant bacteria: New insights in bacterial imprinting based on interfacial biomimetic mineralization. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130254. [PMID: 36356522 DOI: 10.1016/j.jhazmat.2022.130254] [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: 08/03/2022] [Revised: 09/28/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Antibiotic resistance has been a worsening global concern and selective elimination of antibiotic-resistant bacteria (ARB) while retaining the co-existed beneficial bacteria has been essential in environmental protection, which having attracted considerable interest. In this work, by integrating the whole cell imprinting and epitope imprinting strategy, magnetic bacterial imprinted polymers (BIPs) towards ARB were synthesized with interfacial biomimetic mineralization followed by a screening process. The binding data showed that the BIPs owned highly specific affinity towards the target bacteria. Taking advantage of this specific binding ability of BIPs, a two-step selective antimicrobial approach was developed. Remarkably, the BIP nanoantibiotics (nAbts) could efficiently destroy ARB without harming the beneficial bacteria. In comparison with the non-bacterial imprinted polymers, the biocompatible BIP nAbts showed a 12.5-fold increase in the survival percentage for the beneficial bacteria in wastewater. To the best of our knowledge, this is the first time that bacterial imprinting via interfacial biomimetic mineralization was developed, and also the first report of killing ARB without harming the beneficial bacteria in wastewater. We believe that this strategy provides a new insight into the design of novel affinity materials for the selective elimination of ARB in biological treatment for environmental protection.
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Affiliation(s)
- Liuqian Yang
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei 430030, China
| | - Yaoyu Luo
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei 430030, China
| | - Yikai Zhou
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei 430030, China
| | - Chuixiu Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei 430030, China.
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei 430030, China.
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5
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Jiang F, Cai C, Gao L, Su X, Han S. Peptidoglycan-Directed Chemical Ligation for Selective Inhibition on Gram-Positive Bacteria. ACS OMEGA 2023; 8:2485-2490. [PMID: 36687063 PMCID: PMC9850734 DOI: 10.1021/acsomega.2c06964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Microbicides with distinct antibacterial mechanisms show potential to combat multi-drug resistance bacteria. We herein report peptidoglycan-directed chemical ligation (PGCL) between alkyne-bearing vancomycin and an azide-tagged cationic polymer. The former binds peptidoglycan and inhibits peptidoglycan crosslinking, while the latter interferes the integrity of the bacterial membrane. PGCL results in enhanced bactericidal activity against Gram-positive Staphylococcus aureus (S. aureus) over Gram-negative Escherichia coli (E. coli). These data indicate the potential of PGCL to selectively and synergistically inhibit Gram-positive pathogens via dual modality antibacterial mechanisms of peptidoglycan-inhibiting antibiotics and bacterial membrane-disrupting polycations.
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Affiliation(s)
- Feng Jiang
- Department
of Chemical Biology, College of Chemistry and Chemical Engineering,
State Key Laboratory for Physical Chemistry of Solid Surfaces, State
Key Laboratory of Cellular Stress Biology, the Key Laboratory for
Chemical Biology of Fujian Province, and the MOE Key Laboratory of
Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China
| | - Chengteng Cai
- Department
of Chemical Biology, College of Chemistry and Chemical Engineering,
State Key Laboratory for Physical Chemistry of Solid Surfaces, State
Key Laboratory of Cellular Stress Biology, the Key Laboratory for
Chemical Biology of Fujian Province, and the MOE Key Laboratory of
Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China
| | - Lei Gao
- Department
of Chemical Biology, College of Chemistry and Chemical Engineering,
State Key Laboratory for Physical Chemistry of Solid Surfaces, State
Key Laboratory of Cellular Stress Biology, the Key Laboratory for
Chemical Biology of Fujian Province, and the MOE Key Laboratory of
Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China
| | - Xinhui Su
- PET
center, Department of Nuclear Medicine, The First Affiliated Hospital,
College of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Shoufa Han
- Department
of Chemical Biology, College of Chemistry and Chemical Engineering,
State Key Laboratory for Physical Chemistry of Solid Surfaces, State
Key Laboratory of Cellular Stress Biology, the Key Laboratory for
Chemical Biology of Fujian Province, and the MOE Key Laboratory of
Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China
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6
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Eckl DB, Landgraf N, Hoffmann AK, Eichner A, Huber H, Bäumler W. Photodynamic Inactivation of Bacteria in Ionic Environments Using the Photosensitizer SAPYR and the Chelator Citrate. Photochem Photobiol 2022; 99:716-731. [PMID: 36004389 DOI: 10.1111/php.13701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 08/19/2022] [Indexed: 12/01/2022]
Abstract
Many studies show that photodynamic inactivation (PDI) is a powerful tool for the fight against pathogenic, multi-resistant bacteria and the closing of hygiene gaps. However, PDI studies have been frequently performed under standardized in vitro conditions comprising artificial laboratory settings. Under real life conditions, however, PDI encounters substances like ions, proteins, amino acids, and fatty acids, potentially hampering the efficacy PDI to an unpredictable extent. Thus, we investigated PDI with the phenalene-1-one based photosensitizer SAPYR against Escherichia coli and Staphylococcus aureus in the presence of calcium or magnesium ions, which are ubiquitous in potential fields of PDI applications like in tap water or on tissue surfaces. The addition of citrate should elucidate the potential as a chelator. The results indicate that PDI is clearly affected by such ubiquitous ions depending on its concentration and the type of bacteria. The application of citrate enhanced PDI especially for Gram-negative bacteria at certain ionic concentrations (e.g. CaCl2 or MgCl2 : 7.5 to 75 mmol l-1 ). Citrate also improved PDI efficacy in tap water (especially for Gram-negative bacteria) and synthetic sweat solution (especially for Gram-positive bacteria). In conclusion, the use of chelating agents like citrate may facilitate the application of PDI under real life conditions.
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Affiliation(s)
- Daniel B Eckl
- University of Regensburg, Institute for Microbiology and Archaea Centre, Universitätsstrasse 31, 93053, Regensburg.,University Hospital Regensburg, Department of Dermatology, Franz-Josef-Strauss-Allee 11, 93053, Regensburg
| | - Nicole Landgraf
- University of Regensburg, Institute for Microbiology and Archaea Centre, Universitätsstrasse 31, 93053, Regensburg
| | - Anja K Hoffmann
- University of Regensburg, Institute for Microbiology and Archaea Centre, Universitätsstrasse 31, 93053, Regensburg
| | - Anja Eichner
- University Hospital Regensburg, Department of Dermatology, Franz-Josef-Strauss-Allee 11, 93053, Regensburg
| | - Harald Huber
- University of Regensburg, Institute for Microbiology and Archaea Centre, Universitätsstrasse 31, 93053, Regensburg
| | - Wolfgang Bäumler
- University Hospital Regensburg, Department of Dermatology, Franz-Josef-Strauss-Allee 11, 93053, Regensburg
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7
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Bacteria eat nanoprobes for aggregation-enhanced imaging and killing diverse microorganisms. Nat Commun 2022; 13:1255. [PMID: 35273187 PMCID: PMC8913676 DOI: 10.1038/s41467-022-28920-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 02/17/2022] [Indexed: 12/13/2022] Open
Abstract
Currently optical-based techniques for in vivo microbial population imaging are limited by low imaging depth and highly light-scattering tissue; and moreover, are generally effective against only one specific group of bacteria. Here, we introduce an imaging and therapy strategy, in which different bacteria actively eat the glucose polymer (GP)-modified gold nanoparticles through ATP-binding cassette (ABC) transporter pathway, followed by laser irradiation-mediated aggregation in the bacterial cells. As a result, the aggregates display ~15.2-fold enhancement in photoacoustic signals and ~3.0-fold enhancement in antibacterial rate compared with non-aggregated counterparts. Significantly, the developed strategy allows ultrasensitive imaging of bacteria in vivo as low ~105 colony-forming unit (CFU), which is around two orders of magnitude lower than most optical contrast agents. We further demonstrate the developed strategy enables the detection of ~107 CFU bacteria residing within tumour or gut. This technique enables visualization and treatment of diverse bacteria, setting the crucial step forward the study of microbial ecosystem. The authors demonstrate a strategy for bacterial uptake of gold nanoparticles modified with glucose polymer. The particles aggregate in the bacterial cells upon laser irradiation, resulting in enhanced photoacoustic signal and antibacterial activity, enabling sensitive imaging of bacteria in vivo.
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8
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Mahanty S, Rathinasamy K, Suresh D. Spectral Characterization of Purpurin Dye and Its Application in pH Sensing, Cell Imaging and Apoptosis Detection. J Fluoresc 2022; 32:247-256. [PMID: 34731386 DOI: 10.1007/s10895-021-02836-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/18/2021] [Indexed: 12/20/2022]
Abstract
Purpurin (1,2,4-trihydroxy-9,10-anthraquinone) is a natural red dye obtained from the red madder plant that is widely used in food and dyeing industries. The present study investigated the characteristics of purpurin and its application as a pH-sensitive probe to detect the pH of solutions and intracellular pH of mammalian and bacterial cells. Purpurin exhibited high pH-sensitive behavior, low analytes interference, high stability with pKa of 4.6 and visible colorimetric change. 1H NMR and FTIR studies indicated protonation of phenolic hydroxyl group under acidic condition with hypsochromic shift in the absorption and fluorescence spectra relative to that of basic condition. Cell culture studies using HeLa cells revealed that purpurin is well tolerated by the cells and the fluorescent imaging result indicated excellent cell permeability with possible use of the dye to detect the pH fluctuations in living cells under various physiological conditions such as apoptosis. Microbiological studies indicated that the dye could be used for visualization of bacteria under acidic condition.
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Affiliation(s)
- Susobhan Mahanty
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - Krishnan Rathinasamy
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India.
| | - Devarajan Suresh
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Tamil Nadu, 613 401, Thanjavur, India
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9
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Digby EM, Ma T, Zipfel WR, Milstein JN, Beharry AA. Highly Potent Photoinactivation of Bacteria Using a Water-Soluble, Cell-Permeable, DNA-Binding Photosensitizer. ACS Infect Dis 2021; 7:3052-3061. [PMID: 34617443 DOI: 10.1021/acsinfecdis.1c00313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Antimicrobial photodynamic therapy (APDT) employs a photosensitizer, light, and molecular oxygen to treat infectious diseases via oxidative damage, with a low likelihood for the development of resistance. For optimal APDT efficacy, photosensitizers with cationic charges that can permeate bacteria cells and bind intracellular targets are desired to not limit oxidative damage to the outer bacterial structure. Here we report the application of brominated DAPI (Br-DAPI), a water-soluble, DNA-binding photosensitizer for the eradication of both Gram-negative and Gram-positive bacteria (as demonstrated on N99 Escherichia coli and Bacillus subtilis, respectively). We observe intracellular uptake of Br-DAPI, ROS-mediated bacterial cell death via one- and two-photon excitation, and selective photocytotoxicity of bacteria over mammalian cells. Photocytotoxicity of both N99 E. coli and B. subtilis occurred at submicromolar concentrations (IC50 = 0.2-0.4 μM) and low light doses (5 min irradiation times, 4.5 J cm-2 dose), making it superior to commonly employed APDT phenothiazinium photosensitizers such as methylene blue. Given its high potency and two-photon excitability, Br-DAPI is a promising novel photosensitizer for in vivo APDT applications.
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Affiliation(s)
- Elyse M. Digby
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Tianyi Ma
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Warren R. Zipfel
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Joshua N. Milstein
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Andrew A. Beharry
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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10
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Mu J, Peng Y, Shi Z, Zhang D, Jia Q. Copper nanocluster composites for analytical (bio)-sensing and imaging: a review. Mikrochim Acta 2021; 188:384. [PMID: 34664135 DOI: 10.1007/s00604-021-05011-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/27/2021] [Indexed: 12/29/2022]
Abstract
As an ideal substitute for traditional organic fluorescent dyes or up-conversion nanomaterials, copper nanoclusters (CuNCs) have developed rapidly and have been involved in exciting achievements in versatile applications. The emergence of novel CuNCs composites improves the poor stability and fluorescence intensity of CuNCs. With this in mind, great efforts have been made to develop a wide variety of CuNCs composites, and impressive progress has been made in the past few years. In this review, we systematically summarize absorption, fluorescence, electrochemiluminescence, and catalytic properties and focus on the multiple factors that affect the fluorescence properties of CuNCs. The fluorescence properties of CuNCs are discussed from the point of view of core size, surface ligands, self-assembly, metal defects, pH, solvent, ions, metal doping, and confinement effect. Especially, we illustrate the research progress and representative applications of CuNCs composites in bio-related fields, which have received considerable interests in the past years. Additionally, the sensing mechanism of CuNCs composites is highlighted. Finally, we summarize current challenges and look forward to the future development of CuNCs composites. Schematic diagram of the categories, possible sensing mechanisms, and bio-related applications of copper nanoclusters composites.
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Affiliation(s)
- Jin Mu
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Yu Peng
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Dawei Zhang
- College of Chemistry, Jilin University, Changchun, 130012, China.
| | - Qiong Jia
- College of Chemistry, Jilin University, Changchun, 130012, China.
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11
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Yang W, Yoon Y, Lee Y, Oh H, Choi J, Shin S, Lee S, Lee H, Lee Y, Seo J. Photosensitizer-peptoid conjugates for photoinactivation of Gram-negative bacteria: structure-activity relationship and mechanistic studies. Org Biomol Chem 2021; 19:6546-6557. [PMID: 34259297 DOI: 10.1039/d1ob00926e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Multitarget engagement is considered an effective strategy to overcome the threat of bacterial infection, and antimicrobials with multiple mechanisms of action have been successful as natural chemical weaponry. Here, we synthesized a library of photosensitizer-peptoid conjugates (PsPCs) as novel antimicrobial photodynamic therapy (aPDT) agents. The peptoids, linkers, and photosensitizers were varied, and their structure-antimicrobial activity relationships against Escherichia coli were evaluated; PsPC 9 was indicated to be the most promising photoresponsive antimicrobial agent among the synthesized PsPCs. Spectroscopic analyses indicated that 9 generated singlet oxygen upon absorption of visible light (420 nm) while maintaining the weakly helical conformation of the peptoid. Mechanistic studies suggested that damage to the bacterial membrane and cleavage of DNA upon light irradiation were the main causes of bactericidal activity, which was supported by flow cytometry and DNA gel electrophoresis experiments. We demonstrated that the optimal combination of membrane-active peptoids and photosensitizers can generate an efficient aPDT agent that targets multiple sites of bacterial components and kills bacteria by membrane disruption and reactive oxygen species generation.
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Affiliation(s)
- Woojin Yang
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Younggun Yoon
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Yunjee Lee
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Hyeongyeol Oh
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Jieun Choi
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Sujin Shin
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Seongsoo Lee
- Gwangju Center, Korea Basic Science Institute (KBSI), 49 Dosicheomdansaneopro, Nam-gu, Gwangju 61751, South Korea
| | - Hohjai Lee
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Yunho Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
| | - Jiwon Seo
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 61005, South Korea.
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12
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Ye X, Feng T, Li L, Wang T, Li P, Huang W. Theranostic platforms for specific discrimination and selective killing of bacteria. Acta Biomater 2021; 125:29-40. [PMID: 33582362 DOI: 10.1016/j.actbio.2021.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/04/2021] [Accepted: 02/04/2021] [Indexed: 12/26/2022]
Abstract
Bacterial infections are serious threats to public health due to lack of advanced techniques to rapidly and accurately diagnose these infections in clinics. Although bacterial infections can be treated with broad-spectrum antibiotics based on empirical judgment, the emergence of antimicrobial resistance has attracted global attention due to long-term misuse and abuse of antibiotics by humans in recent decades. Therefore, it is imperative to selectively discriminate and precisely eliminate pathogenic bacteria. Herein, in addition to the conventional methods for bacterial identification, we comprehensively reviewed the recently developed theranostic platforms for specific discrimination and selective killing of bacteria according to their different interactions with the target bacteria, such as electrostatic and hydrophobic interactions, molecular recognition, microenvironment response, metabolic labeling, bacteriophage targeting, and others. These theranostic agents not only benefit from improved therapeutic efficiency but also present limited susceptibility to induce bacterial resistance. The strategies summarized in this review will open up new avenues in developing effective antimicrobial materials to accurately diagnose and treat bacterial infections in the post-antibiotic era. STATEMENT OF SIGNIFICANCE: Bacterial infections are difficult to be rapidly and accurately diagnosed, and are generally treated with broad-spectrum antibiotics, which leads to the development of drug resistance. By integrating imaging modalities and therapeutic methods in a single treatment, various theranostic agents have been developed to address the abovementioned issues. Therefore, the emerging theranostic platforms for selective identification and elimination of bacteria based on the distinct interactions of the theranostic agents with the target bacteria are summarized in this review. We believe that the information provided in this review will guide researchers in designing advanced antibacterial theranostics for practical applications in the post-antibiotic era.
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Affiliation(s)
- Xiaoting Ye
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Tao Feng
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China; Ningbo Institute of Northwestern Polytechnical University, Ningbo 315103, China; Chongqing Technology Innovation Center, Northwestern Polytechnical University (NPU), Chongqing 401120, China.
| | - Lin Li
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China; Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Tengjiao Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China; Ningbo Institute of Northwestern Polytechnical University, Ningbo 315103, China
| | - Peng Li
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China.
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China; Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China; Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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Yang Z, Qiao Y, Li J, Wu FG, Lin F. Novel Type of Water-Soluble Photosensitizer from Trichoderma reesei for Photodynamic Inactivation of Gram-Positive Bacteria. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13227-13235. [PMID: 33119308 DOI: 10.1021/acs.langmuir.0c02109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Antimicrobial photodynamic therapy (APDT) is a promising alternative to traditional antibiotics for the treatment of bacterial infections, which inactivates a broad spectrum of bacteria. However, many traditional photosensitizers (PSs) are hydrophobic with poor water solubility and easy aggregation. On the other hand, some light sources such as ultraviolet (UV) have poor penetration and high cytotoxicity. Both issues lead to undesired photodynamic therapy efficacy. To overcome these issues, we develop a novel water-soluble natural PS (sorbicillinoids) obtained by microbial fermentation using recombinant filamentous fungus Trichoderma reesei. Sorbicillinoids could effectively generate singlet oxygen (1O2) under UV light irradiation and ultimately display photoinactivation activity on Gram-positive bacteria including Staphylococcus aureus, Bacillus subtilis, and Micrococcus luteus but not Gram-negative ones such as Escherichia coli and Proteus vulgaris. Sorbicillinoids were found to enter S. aureus but not E. coli. S. aureus treated with sorbicillinoids and UV light displayed high levels of intracellular reactive oxygen species (ROS), notable DNA photocleavage, and compromised cell semipermeability without overt cell membrane disruption, none of which was found in the treated E. coli. All these contribute to the sorbicillinoid-based photoinactivation of Gram-positive bacteria. Moreover, the dark toxicity and phototoxicity on mammalian cells or hemolysis activity of sorbicillinoids is negligible, showing its excellent biocompatibility. This study expands the utilization of UV light for surface sterilization to disinfection in solution. Therefore, sorbicillinoids, a type of secondary metabolite from fungus, have a promising future as a new PS for APDT using a nontoxic dose of UV irradiation.
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Affiliation(s)
- Zihuayuan Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ying Qiao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Junying Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Fengming Lin
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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Klausen M, Ucuncu M, Bradley M. Design of Photosensitizing Agents for Targeted Antimicrobial Photodynamic Therapy. Molecules 2020; 25:E5239. [PMID: 33182751 PMCID: PMC7696090 DOI: 10.3390/molecules25225239] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 12/18/2022] Open
Abstract
Photodynamic inactivation of microorganisms has gained substantial attention due to its unique mode of action, in which pathogens are unable to generate resistance, and due to the fact that it can be applied in a minimally invasive manner. In photodynamic therapy (PDT), a non-toxic photosensitizer (PS) is activated by a specific wavelength of light and generates highly cytotoxic reactive oxygen species (ROS) such as superoxide (O2-, type-I mechanism) or singlet oxygen (1O2*, type-II mechanism). Although it offers many advantages over conventional treatment methods, ROS-mediated microbial killing is often faced with the issues of accessibility, poor selectivity and off-target damage. Thus, several strategies have been employed to develop target-specific antimicrobial PDT (aPDT). This includes conjugation of known PS building-blocks to either non-specific cationic moieties or target-specific antibiotics and antimicrobial peptides, or combining them with targeting nanomaterials. In this review, we summarise these general strategies and related challenges, and highlight recent developments in targeted aPDT.
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Affiliation(s)
- Maxime Klausen
- School of Chemistry and the EPSRC IRC Proteus, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK;
| | - Muhammed Ucuncu
- School of Chemistry and the EPSRC IRC Proteus, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK;
- Department of Analytical Chemistry, Faculty of Pharmacy, Izmir Katip Celebi University, Izmir 35620, Turkey
| | - Mark Bradley
- School of Chemistry and the EPSRC IRC Proteus, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK;
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15
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Yuan Y, Shi W, Li R, Lim DSW, Armugam A, Zhang Y. Rational Design of Gram-Specific Antimicrobial Imidazolium Tetramers To Combat MRSA. ACS Biomater Sci Eng 2020; 6:5563-5570. [PMID: 33320560 DOI: 10.1021/acsbiomaterials.0c01248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Antimicrobial resistance poses an increasingly serious global health threat. Hence, new antimicrobials with low propensity toward inducing resistance in bacteria are being developed to combat this threat. In this work, a series of imidazolium tetramers have been synthesized by modulating the linkers between imidazoliums or the length of the end groups within the structures of oligomers in order to optimize the activity, selectivity, and biocompatibility of the compounds. These new materials possess high biocompatibility, Gram selectivity, and high efficacy against the selected bacterium as well as clinically isolated methicillin-resistant Staphylococcus aureus species without inducing drug resistance. Therefore, we believe that these compounds can potentially be used to mitigate resistance as highly effective disinfectants in healthcare products or as antimicrobial therapies specifically for Gram-positive bacterial infections.
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Affiliation(s)
- Yuan Yuan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore
| | - Weiwei Shi
- 2nd Hospital of Dalian Medical University, Dalian 116023, China
| | - Ruihua Li
- 2nd Hospital of Dalian Medical University, Dalian 116023, China
| | - Diane S W Lim
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore
| | - Arunmozhiarasi Armugam
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore
| | - Yugen Zhang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore
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16
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Xiao F, Cao B, Wen L, Su Y, Zhan M, Lu L, Hu X. Photosensitizer conjugate-functionalized poly(hexamethylene guanidine) for potentiated broad-spectrum bacterial inhibition and enhanced biocompatibility. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.06.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Pang X, Li D, Zhu J, Cheng J, Liu G. Beyond Antibiotics: Photo/Sonodynamic Approaches for Bacterial Theranostics. NANO-MICRO LETTERS 2020; 12:144. [PMID: 34138184 PMCID: PMC7770670 DOI: 10.1007/s40820-020-00485-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/15/2020] [Indexed: 05/04/2023]
Abstract
Rapid evolution and propagation of multidrug resistance among bacterial pathogens are outpacing the development of new antibiotics, but antimicrobial photodynamic therapy (aPDT) provides an excellent alternative. This treatment depends on the interaction between light and photoactivated sensitizer to generate reactive oxygen species (ROS), which are highly cytotoxic to induce apoptosis in virtually all microorganisms without resistance concern. When replacing light with low-frequency ultrasonic wave to activate sensitizer, a novel ultrasound-driven treatment emerges as antimicrobial sonodynamic therapy (aSDT). Recent advances in aPDT and aSDT reveal golden opportunities for the management of multidrug resistant bacterial infections, especially in the theranostic application where imaging diagnosis can be accomplished facilely with the inherent optical characteristics of sensitizers, and the generated ROS by aPDT/SDT cause broad-spectrum oxidative damage for sterilization. In this review, we systemically outline the mechanisms, targets, and current progress of aPDT/SDT for bacterial theranostic application. Furthermore, potential limitations and future perspectives are also highlighted.
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Affiliation(s)
- Xin Pang
- Henan Key Laboratory of Functional Magnetic Resonance Imaging and Molecular Imaging, Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, People's Republic of China.
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 361102, Xiamen, People's Republic of China.
| | - Dengfeng Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 361102, Xiamen, People's Republic of China
- Amoy Hopeful Biotechnology Co., Ltd, 361027, Xiamen, People's Republic of China
| | - Jing Zhu
- Henan Key Laboratory of Functional Magnetic Resonance Imaging and Molecular Imaging, Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, People's Republic of China
| | - Jingliang Cheng
- Henan Key Laboratory of Functional Magnetic Resonance Imaging and Molecular Imaging, Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, People's Republic of China.
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 361102, Xiamen, People's Republic of China.
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18
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Zlitni A, Gowrishankar G, Steinberg I, Haywood T, Sam Gambhir S. Maltotriose-based probes for fluorescence and photoacoustic imaging of bacterial infections. Nat Commun 2020; 11:1250. [PMID: 32144257 PMCID: PMC7060353 DOI: 10.1038/s41467-020-14985-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/13/2020] [Indexed: 11/09/2022] Open
Abstract
Currently, there are no non-invasive tools to accurately diagnose wound and surgical site infections before they become systemic or cause significant anatomical damage. Fluorescence and photoacoustic imaging are cost-effective imaging modalities that can be used to noninvasively diagnose bacterial infections when paired with a molecularly targeted infection imaging agent. Here, we develop a fluorescent derivative of maltotriose (Cy7-1-maltotriose), which is shown to be taken up in a variety of gram-positive and gram-negative bacterial strains in vitro. In vivo fluorescence and photoacoustic imaging studies highlight the ability of this probe to detect infection, assess infection burden, and visualize the effectiveness of antibiotic treatment in E. coli-induced myositis and a clinically relevant S. aureus wound infection murine model. In addition, we show that maltotriose is an ideal scaffold for infection imaging agents encompassing better pharmacokinetic properties and in vivo stability than other maltodextrins (e.g. maltohexose).
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Affiliation(s)
- Aimen Zlitni
- Molecular Imaging Program at Stanford, Stanford University, Stanford, CA, 94305, USA
- Department of Radiology, Stanford University, Stanford, CA, 94305, USA
| | - Gayatri Gowrishankar
- Molecular Imaging Program at Stanford, Stanford University, Stanford, CA, 94305, USA
- Department of Radiology, Stanford University, Stanford, CA, 94305, USA
| | - Idan Steinberg
- Molecular Imaging Program at Stanford, Stanford University, Stanford, CA, 94305, USA
- Department of Radiology, Stanford University, Stanford, CA, 94305, USA
| | - Tom Haywood
- Molecular Imaging Program at Stanford, Stanford University, Stanford, CA, 94305, USA
- Department of Radiology, Stanford University, Stanford, CA, 94305, USA
| | - Sanjiv Sam Gambhir
- Molecular Imaging Program at Stanford, Stanford University, Stanford, CA, 94305, USA.
- Department of Radiology, Stanford University, Stanford, CA, 94305, USA.
- Department of Bioengineering, Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA.
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19
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Zhou J, Gao ZJ, Cai JQ, Li LL, Wang H. Synthesis and Self-Assembly Behavior of Chlorophyll Derivatives for Ratiometric Photoacoustic Signal Optimization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1559-1568. [PMID: 32030985 DOI: 10.1021/acs.langmuir.9b03652] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Self-assembly provides researchers powerful tools for creating ordered functional structures and complex architectures. Investigation of in vivo self-assembly reveals the assembly/aggregation-induced retention (AIR) effect and enhanced targeting effect, which can be applied to promising biomedical applications by enhancing molecular accumulation in the target region. These unique bioeffects inspire the interest of researchers in construction of self-assembled nanomaterials in biological systems. Although many efforts have been achieved, the in-depth analysis of the relationship between assemblies and functions is rarely reported. Here, we focus on the relationship of chlorophyll-derivative assemblies and their photoacoustic signals and attempt to establish a method for monitoring the aggregation efficiency in vivo based on photoacoustic signals. Three arginine-rich peptide-purpurin molecules were designed and synthesized. The assembled capabilities and assembly processes of these molecules were characterized and monitored by UV, fluorescence, and CD spectra images of gradually changing polarities in mixed solvents, and the morphologies of the assemblies were observed by TEM. Furthermore, the relationship between the aggregation ratios of the molecules and the ratiometric photoacoustic signals was systemically studied. We prospect that the fundamental research in revealing objective laws will be useful for future guidance in optimizing photoacoustic detection windows and assembled molecule design.
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Affiliation(s)
- Jin Zhou
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
| | - Zi-Jun Gao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
| | - Jun-Quan Cai
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
| | - Li-Li Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
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20
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Jia Q, Song Q, Li P, Huang W. Rejuvenated Photodynamic Therapy for Bacterial Infections. Adv Healthc Mater 2019; 8:e1900608. [PMID: 31240867 DOI: 10.1002/adhm.201900608] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/13/2019] [Indexed: 12/31/2022]
Abstract
The emergence of multidrug resistant bacterial strains has hastened the exploration of advanced microbicides and antibacterial techniques. Photodynamic antibacterial therapy (PDAT), an old-fashioned technique, has been rejuvenated to combat "superbugs" and biofilm-associated infections owing to its excellent characteristics of noninvasiveness and broad antibacterial spectrum. More importantly, bacteria are less likely to produce drug resistance to PDAT because it does not require specific targeting interaction between photosensitizers (PSs) and bacteria. This review mainly focuses on recent developments and future prospects of PDAT. The mechanisms of PDAT against bacteria and biofilms are briefly introduced. In addition to classical macrocyclic PSs, several innovative PSs, including non-self-quenching PSs, conjugated polymer-based PSs, and nano-PSs, are summarized in detail. Numerous multifunctional PDAT systems such as in situ light-activated PDAT, stimuli-responsive PDAT, oxygen self-enriching enhanced PDAT, and PDAT-based multimodal therapy are highlighted to overcome the inherent defects of PDAT in vivo (e.g., limited penetration depth of light and hypoxic environment of infectious sites).
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Affiliation(s)
- Qingyan Jia
- Xi'an Institute of Flexible Electronics (IFE)Xi'an Institute of Biomedical Materials and Engineering (IBME)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Qing Song
- Xi'an Institute of Flexible Electronics (IFE)Xi'an Institute of Biomedical Materials and Engineering (IBME)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Peng Li
- Xi'an Institute of Flexible Electronics (IFE)Xi'an Institute of Biomedical Materials and Engineering (IBME)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Wei Huang
- Xi'an Institute of Flexible Electronics (IFE)Xi'an Institute of Biomedical Materials and Engineering (IBME)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
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21
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Zhu J, Han H, Li F, Wang X, Yu J, Chu CC, Wu D. Self-assembly of amino acid-based random copolymers for antibacterial application and infection treatment as nanocarriers. J Colloid Interface Sci 2019; 540:634-646. [DOI: 10.1016/j.jcis.2018.12.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/05/2018] [Accepted: 12/26/2018] [Indexed: 11/24/2022]
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22
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Xiao F, Cao B, Wang C, Guo X, Li M, Xing D, Hu X. Pathogen-Specific Polymeric Antimicrobials with Significant Membrane Disruption and Enhanced Photodynamic Damage To Inhibit Highly Opportunistic Bacteria. ACS NANO 2019; 13:1511-1525. [PMID: 30632740 DOI: 10.1021/acsnano.8b07251] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Highly pathogenic Gram-negative bacteria and their drug resistance are a severe public health threat with high mortality. Gram-negative bacteria are hard to kill due to the complex cell envelopes with low permeability and extra defense mechanisms. It is challenging to treat them with current strategies, mainly including antibiotics, peptides, polymers, and some hybrid materials, which still face the issue of drug resistance, limited antibacterial selectivity, and severe side effects. Together with precise bacteria targeting, synergistic therapeutic modalities, including physical membrane damage and photodynamic eradication, are promising to combat Gram-negative bacteria. Herein, pathogen-specific polymeric antimicrobials were formulated from amphiphilic block copolymers, poly(butyl methacrylate)- b-poly(2-(dimethylamino) ethyl methacrylate- co-eosin)- b-ubiquicidin, PBMA- b-P(DMAEMA- co-EoS)-UBI, in which pathogen-targeting peptide ubiquicidin (UBI) was tethered in the hydrophilic chain terminal, and Eosin-Y was copolymerized in the hydrophilic block. The micelles could selectively adhere to bacteria instead of mammalian cells, inserting into the bacteria membrane to induce physical membrane damage and out-diffusion of intracellular milieu. Furthermore, significant in situ generation of reactive oxygen species was observed upon light irradiation, achieving further photodynamic eradication. Broad-spectrum bacterial inhibition was demonstrated for the polymeric antimicrobials, especially highly opportunistic Gram-negative bacteria, such as Pseudomona aeruginosa ( P. aeruginosa) based on the synergy of physical destruction and photodynamic therapy, without detectable resistance. In vivo P. aeruginosa-infected knife injury model and burn model both proved good potency of bacteria eradication and promoted wound healing, which was comparable with commercial antibiotics, yet no risk of drug resistance. It is promising to hurdle the infection and resistance suffered from highly opportunistic bacteria.
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Affiliation(s)
- Fengfeng Xiao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Bing Cao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Congyu Wang
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Xujuan Guo
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Mengge Li
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Xianglong Hu
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
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23
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Xia J, Wang W, Hai X, E S, Shu Y, Wang J. Improvement of antibacterial activity of copper nanoclusters for selective inhibition on the growth of gram-positive bacteria. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.07.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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24
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Affiliation(s)
| | - Marina Gobbo
- Department of Chemical SciencesUniversity of PadovaPadova35131 Italy
- Institute of Biomolecular Chemistry of CNR, Padova UnitPadova35131 Italy
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25
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Qi GB, Zhang D, Liu FH, Qiao ZY, Wang H. An "On-Site Transformation" Strategy for Treatment of Bacterial Infection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703461. [PMID: 28782856 DOI: 10.1002/adma.201703461] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Indexed: 05/22/2023]
Abstract
To date, numerous nanosystems have been developed as antibiotic replacements for bacterial infection treatment. However, these advanced systems are limited owing to their nontargeting accumulation and the consequent side effects. Herein, transformable polymer-peptide biomaterials have been developed that enable specific accumulation in the infectious site and long-term retention, resulting in enhanced binding capability and killing efficacy toward bacteria. The polymer-peptide conjugates are composed of a chitosan backbone and two functional peptides, i.e., an antimicrobial peptide and a poly(ethylene glycol)-tethered enzyme-cleavable peptide (CPC-1). The CPC-1 initially self-assembles into nanoparticles with pegylated coronas. Upon the peptides are cleaved by the gelatinase secreted by a broad spectrum of bacterial species, the resultant compartments of nanoparticles spontaneously transformed into fibrous nanostructures that are stabilized by enhanced chain-chain interaction, leading to exposure of antimicrobial peptide residues for multivalent cooperative electrostatic interactions with bacterial membranes. Intriguingly, the in situ morphological transformation also critically improves the accumulation and retention of CPC-1 in infectious sites in vivo, which exhibits highly efficient antibacterial activity. This proof-of-concept study demonstrates that pathological environment-driven smart self-assemblies may provide a new idea for design of high-performance biomaterials for disease diagnostics and therapeutics.
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Affiliation(s)
- Guo-Bin Qi
- CAS Center for Excellence in Nanoscience, Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Di Zhang
- CAS Center for Excellence in Nanoscience, Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Fu-Hua Liu
- CAS Center for Excellence in Nanoscience, Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Zeng-Ying Qiao
- CAS Center for Excellence in Nanoscience, Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
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26
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Gui Ning L, Wang S, Feng Hu X, Ming Li C, Qun Xu L. Vancomycin-conjugated polythiophene for the detection and imaging of Gram-positive bacteria. J Mater Chem B 2017; 5:8814-8820. [DOI: 10.1039/c7tb02061a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Vancomycin-conjugated polythiophene was synthesized for the discrimination and elimination of Gram-positive bacteria.
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Affiliation(s)
- Ling Gui Ning
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing
- P. R. China
| | - Shuai Wang
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing
- P. R. China
| | - Xue Feng Hu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- P. R. China
| | - Chang Ming Li
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing
- P. R. China
| | - Li Qun Xu
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing
- P. R. China
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