1
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Shchelik IS, Gademann K. Synthesis and Antimicrobial Evaluation of New Cephalosporin Derivatives Containing Cyclic Disulfide Moieties. ACS Infect Dis 2022; 8:2327-2338. [PMID: 36251034 DOI: 10.1021/acsinfecdis.2c00393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Due to a steady increase in microbial resistance, there is a need to increase the effectiveness of antibiotic performance by involving additional mechanisms of their penetration or retention for their better action. Cephalosporins are a successful group of antibiotics to combat pathogenic microorganisms, including drug-resistant strains. In this study, we investigated the effect of newly synthesized cephalosporin derivatives with cyclic disulfide modifications against several Gram-positive and Gram-negative strains as well as against biofilm formation. The incorporation of asparagusic acid was found to be effective in improving the activity of the drug against Gram-negative strains compared to the all carbon-control compounds. Furthermore, we could demonstrate the successful reduction of biofilm formation for Staphylococcus aureus and Pseudomonas aeruginosa at similar concentrations as obtained against planktonic cells. We propose that the incorporation of cyclic disulfides is one additional strategy to improve antibiotic activity and to combat bacterial infections.
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Affiliation(s)
- Inga S Shchelik
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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2
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Shchelik IS, Tomio A, Gademann K. Design, Synthesis, and Biological Evaluation of Light-Activated Antibiotics. ACS Infect Dis 2021; 7:681-692. [PMID: 33656844 DOI: 10.1021/acsinfecdis.1c00015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The spatial and temporal control of bioactivity of small molecules by light (photopharmacology) constitutes a promising approach for study of biological processes and ultimately for the treatment of diseases. In this study, we investigated two different "caged" antibiotic classes that can undergo remote activation with UV-light at λ = 365 nm, via the conjugation of deactivating and photocleavable units through a short synthetic sequence. The two widely used antibiotics vancomycin and cephalosporin were thus enhanced in their performance by rendering them photoresponsive and thereby suppressing undesired off-site activity. The antimicrobial activity against Bacillus subtilis ATCC 6633, Staphylococcus aureus ATCC 29213, S. aureus ATCC 43300 (MRSA), Escherichia coli ATCC 25922, and Pseudomonas aeruginosa ATCC 27853 could be spatiotemporally controlled with light. Both molecular series displayed a good activity window. The vancomycin derivative displayed excellent values against Gram-positive strains after uncaging, and the next-generation caged cephalosporin derivative achieved good and broad activity against both Gram-positive and Gram-negative strains after photorelease.
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Affiliation(s)
- Inga S. Shchelik
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Andrea Tomio
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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3
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Årstøl E, Hohmann-Marriott MF. Cyanobacterial Siderophores-Physiology, Structure, Biosynthesis, and Applications. Mar Drugs 2019; 17:E281. [PMID: 31083354 PMCID: PMC6562677 DOI: 10.3390/md17050281] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 11/16/2022] Open
Abstract
Siderophores are low-molecular-weight metal chelators that function in microbial iron uptake. As iron limits primary productivity in many environments, siderophores are of great ecological importance. Additionally, their metal binding properties have attracted interest for uses in medicine and bioremediation. Here, we review the current state of knowledge concerning the siderophores produced by cyanobacteria. We give an overview of all cyanobacterial species with known siderophore production, finding siderophores produced in all but the most basal clades, and in a wide variety of environments. We explore what is known about the structure, biosynthesis, and cycling of the cyanobacterial siderophores that have been characterized: Synechobactin, schizokinen and anachelin. We also highlight alternative siderophore functionality and technological potential, finding allelopathic effects on competing phytoplankton and likely roles in limiting heavy-metal toxicity. Methodological improvements in siderophore characterization and detection are briefly described. Since most known cyanobacterial siderophores have not been structurally characterized, the application of mass spectrometry techniques will likely reveal a breadth of variation within these important molecules.
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Affiliation(s)
- Erland Årstøl
- Department of Biotechnology, PhotoSynLab, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Martin F Hohmann-Marriott
- Department of Biotechnology, PhotoSynLab, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
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4
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Konai MM, Bhattacharjee B, Ghosh S, Haldar J. Recent Progress in Polymer Research to Tackle Infections and Antimicrobial Resistance. Biomacromolecules 2018; 19:1888-1917. [PMID: 29718664 DOI: 10.1021/acs.biomac.8b00458] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Global health is increasingly being threatened by the rapid emergence of drug-resistant microbes. The ability of these microbes to form biofilms has further exacerbated the scenario leading to notorious infections that are almost impossible to treat. For addressing this clinical threat, various antimicrobial polymers, polymer-based antimicrobial hydrogels and polymer-coated antimicrobial surfaces have been developed in the recent past. This review aims to discuss such polymer-based antimicrobial strategies with a focus on their current advancement in the field. Antimicrobial polymers, whose designs are inspired from antimicrobial peptides (AMPs), are described with an emphasis on structure-activity analysis. Additionally, antibiofilm activity and in vivo efficacy are delineated to elucidate the real potential of these antimicrobial polymers as possible therapeutics. Antimicrobial hydrogels, prepared from either inherently antimicrobial polymers or biocide-loaded into polymer-derived hydrogel matrix, are elaborated followed by various strategies to engineer polymer-coated antimicrobial surfaces. In the end, the current challenges are accentuated along with future directions for further expansion of the field toward tackling infections and antimicrobial resistance.
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Affiliation(s)
- Mohini Mohan Konai
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Brinta Bhattacharjee
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Sreyan Ghosh
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
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5
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Self-Assembled Monolayers for Dental Implants. Int J Dent 2018; 2018:4395460. [PMID: 29552036 PMCID: PMC5818935 DOI: 10.1155/2018/4395460] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 10/26/2017] [Indexed: 02/06/2023] Open
Abstract
Implant-based therapy is a mature approach to recover the health conditions of patients affected by edentulism. Thousands of dental implants are placed each year since their introduction in the 80s. However, implantology faces challenges that require more research strategies such as new support therapies for a world population with a continuous increase of life expectancy, to control periodontal status and new bioactive surfaces for implants. The present review is focused on self-assembled monolayers (SAMs) for dental implant materials as a nanoscale-processing approach to modify titanium surfaces. SAMs represent an easy, accurate, and precise approach to modify surface properties. These are stable, well-defined, and well-organized organic structures that allow to control the chemical properties of the interface at the molecular scale. The ability to control the composition and properties of SAMs precisely through synthesis (i.e., the synthetic chemistry of organic compounds with a wide range of functional groups is well established and in general very simple, being commercially available), combined with the simple methods to pattern their functional groups on complex geometry appliances, makes them a good system for fundamental studies regarding the interaction between surfaces, proteins, and cells, as well as to engineering surfaces in order to develop new biomaterials.
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6
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Kerschgens IP, Gademann K. Antibiotic Algae by Chemical Surface Engineering. Chembiochem 2018; 19:439-443. [DOI: 10.1002/cbic.201700553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Indexed: 02/01/2023]
Affiliation(s)
- Isabel P. Kerschgens
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Karl Gademann
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
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7
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Elaboration of antibacterial plastic surfaces by a combination of antiadhesive and biocidal coatings of natural products. Colloids Surf B Biointerfaces 2017; 156:186-193. [DOI: 10.1016/j.colsurfb.2017.05.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 05/02/2017] [Accepted: 05/10/2017] [Indexed: 02/02/2023]
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8
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Kurth C, Kage H, Nett M. Siderophores as molecular tools in medical and environmental applications. Org Biomol Chem 2016; 14:8212-27. [PMID: 27492756 DOI: 10.1039/c6ob01400c] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Almost all life forms depend on iron as an essential micronutrient that is needed for electron transport and metabolic processes. Siderophores are low-molecular-weight iron chelators that safeguard the supply of this important metal to bacteria, fungi and graminaceous plants. Although animals and the majority of plants do not utilise siderophores and have alternative means of iron acquisition, siderophores have found important clinical and agricultural applications. In this review, we will highlight the different uses of these iron-chelating molecules.
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Affiliation(s)
- Colette Kurth
- Leibniz Institute for Natural Product Research and Infection Biology, Hans-Knöll-Institute, Adolf-Reichwein-Str. 23, D-07745 Jena, Germany
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9
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Borgström B, Huang X, Chygorin E, Oredsson S, Strand D. Salinomycin Hydroxamic Acids: Synthesis, Structure, and Biological Activity of Polyether Ionophore Hybrids. ACS Med Chem Lett 2016; 7:635-40. [PMID: 27326340 DOI: 10.1021/acsmedchemlett.6b00079] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/25/2016] [Indexed: 01/16/2023] Open
Abstract
The polyether ionophore salinomycin has recently gained attention due to its exceptional ability to selectively reduce the proportion of cancer stem cells within a number of cancer cell lines. Efficient single step strategies for the preparation of hydroxamic acid hybrids of this compound varying in N- and O-alkylation are presented. The parent hydroxamic acid, salinomycin-NHOH, forms both inclusion complexes and well-defined electroneutral complexes with potassium and sodium cations via 1,3-coordination by the hydroxamic acid moiety to the metal ion. A crystal structure of an cationic sodium complex with a noncoordinating anion corroborates this finding and, moreover, reveals a novel type of hydrogen bond network that stabilizes the head-to-tail conformation that encapsulates the cation analogously to the native structure. The hydroxamic acid derivatives display down to single digit micromolar activity against cancer cells but unlike salinomycin selective reduction of ALDH(+) cells, a phenotype associated with cancer stem cells was not observed. Mechanistic implications are discussed.
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Affiliation(s)
- Björn Borgström
- Centre
for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
| | - Xiaoli Huang
- Department
of Biology, Lund University, 221 00 Lund, Sweden
| | - Eduard Chygorin
- Centre
for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
| | - Stina Oredsson
- Department
of Biology, Lund University, 221 00 Lund, Sweden
| | - Daniel Strand
- Centre
for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
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10
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Crane EA, Gademann K. Synthetisch gewonnene Naturstofffragmente in der Wirkstoffentwicklung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201505863] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Erika A. Crane
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 CH-4056 Basel Schweiz
| | - Karl Gademann
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 CH-4056 Basel Schweiz
- Institut für Chemie; Universität Zürich; Winterthurerstrasse 190 CH-8057 Zürich Schweiz
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11
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Crane EA, Gademann K. Capturing Biological Activity in Natural Product Fragments by Chemical Synthesis. Angew Chem Int Ed Engl 2016; 55:3882-902. [PMID: 26833854 PMCID: PMC4797711 DOI: 10.1002/anie.201505863] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 12/22/2022]
Abstract
Natural products have had an immense influence on science and have directly led to the introduction of many drugs. Organic chemistry, and its unique ability to tailor natural products through synthesis, provides an extraordinary approach to unlock the full potential of natural products. In this Review, an approach based on natural product derived fragments is presented that can successfully address some of the current challenges in drug discovery. These fragments often display significantly reduced molecular weights, reduced structural complexity, a reduced number of synthetic steps, while retaining or even improving key biological parameters such as potency or selectivity. Examples from various stages of the drug development process up to the clinic are presented. In addition, this process can be leveraged by recent developments such as genome mining, antibody–drug conjugates, and computational approaches. All these concepts have the potential to identify the next generation of drug candidates inspired by natural products.
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Affiliation(s)
- Erika A Crane
- Department of Chemistry, University of Basel, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Basel, Switzerland. .,Department of Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
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12
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Li H, Bao H, Bok KX, Lee CY, Li B, Zin MT, Kang L. High durability and low toxicity antimicrobial coatings fabricated by quaternary ammonium silane copolymers. Biomater Sci 2016; 4:299-309. [DOI: 10.1039/c5bm00353a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Novel quaternary ammonium silane (QAS) antimicrobial copolymers with improved biocompatibility can form transparent and durable coatingsviaa thermal-curing process.
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Affiliation(s)
- Hairui Li
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
- 3M Innovation Singapore
- Singapore 738205
| | | | - Ke Xin Bok
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
| | | | - Bo Li
- 3M Innovation Singapore
- Singapore 738205
| | - Melvin T. Zin
- 3M Innovation Singapore
- Singapore 738205
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Lifeng Kang
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
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13
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Hartleb W, Saar JS, Zou P, Lienkamp K. Just Antimicrobial is not Enough: Toward Bifunctional Polymer Surfaces with Dual Antimicrobial and Protein-Repellent Functionality. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500266] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wibke Hartleb
- Department of Microsystems Engineering; Albert-Ludwigs-Universität Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Julia S. Saar
- Department of Microsystems Engineering; Albert-Ludwigs-Universität Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Peng Zou
- Department of Microsystems Engineering; Albert-Ludwigs-Universität Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
| | - Karen Lienkamp
- Department of Microsystems Engineering; Albert-Ludwigs-Universität Freiburg; Georges-Köhler-Allee 103 79110 Freiburg Germany
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14
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Zhu Z, Wang J, Lopez AI, Yu F, Huang Y, Kumar A, Li S, Zhang L, Cai C. Surfaces Presenting α-Phenyl Mannoside Derivatives Enable Formation of Stable, High Coverage, Non-pathogenic Escherichia coli Biofilms against Pathogen Colonization. Biomater Sci 2015; 3:781-880. [PMID: 26029359 PMCID: PMC4443871 DOI: 10.1039/c5bm00076a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Prevention of pathogenic colonization on medical devices over a long period of time remains a great challenge, especially in a high-nutrient environment that accelerates production of biomass leading to biofouling of the device. Since biofouling and the subsequent pathogen colonization is eventually inevitable, a new strategy using non-pathogenic bacteria as living guards against pathogenic colonization on medical devices has attracted increasing interest. Crucial to the success of this strategy is to pre-establish a high coverage and stable biofilm of benign bacteria on the surface. Silicone elastomers are one of the most widely used materials in biomedical devices. In this work, we modified silicone surfaces to promote formation of high coverage and stable biofilms by a non-pathogenic Escherichia coli strain 83972 with type 1 fimbriae (fim+) to interfere the colonization of an aggressive biofilm-forming, uropathogenic Enterococcus faecalis. Although it is well known that mannoside surfaces promote the initial adherence of fim+ E. coli through binding to the FimH receptor at the tip of the type 1 fimbriae, it is not clear whether the fast initial adherence could lead to a high coverage and stable protective biofilm. To explore the role of mannoside ligands, we synthesized a series of alkyl and aryl mannosides varied in structure and immobilized them on silicone surfaces pre-coated with poly(amidoamine) (PAMAM) dendrimer. We found that stable and densely packed benign E. coli biofilms were formed on the surfaces presenting biphenyl mannoside with the highest initial adherence of fim+ E. coli. These non-pathogenic biofilms prevented the colonization of E. faecalis for 11 days at a high concentration (108 CFU mL-1, 100,000 times above the diagnostic threshold for urinary tract infection) in the nutrient-rich Lysogeny Broth (LB) media. The result shows a correlation among the initial adherence of fim+ E. coli 83972, the coverage and long-term stability of the resultant biofilms, as well as their efficiency for preventing the pathogen colonization.
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Affiliation(s)
- Zhiling Zhu
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Jun Wang
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Analette I. Lopez
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Fei Yu
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Yongkai Huang
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Amit Kumar
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Siheng Li
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
| | - Lijuan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
| | - Chengzhi Cai
- 112 Fleming Building, Department of Chemistry, University of Houston, Houston, Texas, 77204, USA. Fax: +1-713-743-2709; Tel: +1-713-743-2710
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15
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Yu Q, Wu Z, Chen H. Dual-function antibacterial surfaces for biomedical applications. Acta Biomater 2015; 16:1-13. [PMID: 25637065 DOI: 10.1016/j.actbio.2015.01.018] [Citation(s) in RCA: 245] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 12/24/2014] [Accepted: 01/16/2015] [Indexed: 12/12/2022]
Abstract
Bacterial attachment and the subsequent formation of biofilm on surfaces of synthetic materials pose a serious problem in both human healthcare and industrial applications. In recent decades, considerable attention has been paid to developing antibacterial surfaces to reduce the extent of initial bacterial attachment and thereby to prevent subsequent biofilm formation. Briefly, there are three main types of antibacterial surfaces: bactericidal surfaces, bacteria-resistant surfaces, and bacteria-release surfaces. The strategy adopted to develop each type of surface has inherent advantages and disadvantages; many efforts have been focused on the development of novel antibacterial surfaces with dual functionality. In this review, we highlight the recent progress made in the development of dual-function antibacterial surfaces for biomedical applications. These surfaces are based on the combination of two strategies into one system, which can kill attached bacteria as well as resisting or releasing bacteria. Perspectives on future research directions for the design of dual-function antibacterial surfaces are also provided.
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16
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Gademann K. Copy, edit, and paste: natural product approaches to biomaterials and neuroengineering. Acc Chem Res 2015; 48:731-9. [PMID: 25719515 DOI: 10.1021/ar500435b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Progress in the chemical sciences has formed the world we live in, both on a macroscopic and on a nanoscopic scale. The last century witnessed the development of high performance materials that interact with humans on many layers, from clothing to construction, from media to medical devices. On a molecular level, natural products and their derivatives influence many biological processes, and these compounds have enormously contributed to the health and quality of living of humans. Although coatings of stone materials with oils or resins (containing natural products) have led to improved tools already millennia ago, in contrast today, natural product approaches to designer materials, that is, combining the best of both worlds, remain scarce. In this Account, we will summarize our recent research efforts directed to the generation of natural product functionalized materials, exploiting the strategy of "copy, edit, and paste with natural products". Natural products embody the wisdom of evolution, and only total synthesis is able to unlock the secrets enshrined in their molecular structure. We employ total synthesis ("copy") as a scientific approach to address problems related to molecular structure, the biosynthesis of natural products, and their bioactivity. Additionally, the fundamental desire to investigate the mechanism of action of natural products constitutes a key driver for scientific inquiry. In an emerging area of relevance to society, we have prepared natural products such as militarinone D that can stimulate neurite outgrowth and facilitate nerve regeneration. This knowledge obtained by synthetic organic chemistry on complex natural products can then be used to design structurally simplified compounds that retain the biological power of the parent natural product ("edit"). This process, sometimes referred to as function-oriented synthesis, allows obtaining derivatives with better properties, improving their chemical tractability and reducing the step count of the synthesis. Along these lines, we have demonstrated that militarinone D can be truncated to yield structurally simplified analogs with improved activity. Finally, with the goal of designing bioactive materials, we have immobilized functionally optimized, neuritogenic natural products ("paste"). These materials could facilitate nerve regeneration, act as nerve guidance conduits, or lead to new approaches in neuroengineering. Based on the surface-adhesive properties of electron-deficient catecholates and the knowledge gathered on neuritogenic natural product derivatives, two mechanistically different design principles have been applied to generate neuritogenic materials. In conclusion, natural products, and their functionally optimized analogs, present a large, mostly untapped reservoir of powerful modulators of biological systems, and their hybridization with materials can lead to new approaches in various fields, from biofilm prevention to neuroengineering.
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Affiliation(s)
- Karl Gademann
- Department of Chemistry, University of Basel, St. Johanns-Ring
19, CH-4056 Basel, Switzerland
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17
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Winkel A, Dempwolf W, Gellermann E, Sluszniak M, Grade S, Heuer W, Eisenburger M, Menzel H, Stiesch M. Introducing a semi-coated model to investigate antibacterial effects of biocompatible polymers on titanium surfaces. Int J Mol Sci 2015; 16:4327-42. [PMID: 25690041 PMCID: PMC4346959 DOI: 10.3390/ijms16024327] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/12/2015] [Indexed: 11/16/2022] Open
Abstract
Peri-implant infections from bacterial biofilms on artificial surfaces are a common threat to all medical implants. They are a handicap for the patient and can lead to implant failure or even life-threatening complications. New implant surfaces have to be developed to reduce biofilm formation and to improve the long-term prognosis of medical implants. The aim of this study was (1) to develop a new method to test the antibacterial efficacy of implant surfaces by direct surface contact and (2) to elucidate whether an innovative antimicrobial copolymer coating of 4-vinyl-N-hexylpyridinium bromide and dimethyl(2-methacryloyloxyethyl) phosphonate (VP:DMMEP 30:70) on titanium is able to reduce the attachment of bacteria prevalent in peri-implant infections. With a new in vitro model with semi-coated titanium discs, we were able to show a dramatic reduction in the adhesion of various pathogenic bacteria (Streptococcus sanguinis, Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis), completely independently of effects caused by soluble materials. In contrast, soft tissue cells (human gingival or dermis fibroblasts) were less affected by the same coating, despite a moderate reduction in initial adhesion of gingival fibroblasts. These data confirm the hypothesis that VP:DMMEP 30:70 is a promising antibacterial copolymer that may be of use in several clinical applications.
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Affiliation(s)
- Andreas Winkel
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Wibke Dempwolf
- Institute for Technical Chemistry, Braunschweig University of Technology, Hans-Sommer-Str. 10, D-38104 Braunschweig, Germany.
| | - Eva Gellermann
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Magdalena Sluszniak
- Institute for Technical Chemistry, Braunschweig University of Technology, Hans-Sommer-Str. 10, D-38104 Braunschweig, Germany.
| | - Sebastian Grade
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Wieland Heuer
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Michael Eisenburger
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Henning Menzel
- Institute for Technical Chemistry, Braunschweig University of Technology, Hans-Sommer-Str. 10, D-38104 Braunschweig, Germany.
| | - Meike Stiesch
- Clinic for Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
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18
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Chen Y, Cao W, Zhou J, Pidhatika B, Xiong B, Huang L, Tian Q, Shu Y, Wen W, Hsing IM, Wu H. Poly(l-lysine)-graft-folic acid-coupled poly(2-methyl-2-oxazoline) (PLL-g-PMOXA-c-FA): a bioactive copolymer for specific targeting to folate receptor-positive cancer cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:2919-2930. [PMID: 25581478 DOI: 10.1021/am508399w] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, we present the preparation, characterization and application of a novel bioactive copolymer poly(l-lysine)-graft-folic acid-coupled poly(2-methyl-2-oxazoline) (PLL-g-PMOXA-c-FA), which has a specific interaction with folate receptor (FR)-positive cancer cells. Glass surface immobilized with PLL-g-PMOXA-c-FA was demonstrated to be adhesive to FR-positive cancer cells (HeLa, JEG-3) while nonadhesive to FR-negative ones (MCF-7, HepG2) in 3 h. The specific interaction between conjugated FA on the substrate and FRs on the cells could hardly be inhibited unless a high concentration (5 mM) of free FA was used due to the multivalent nature of it. The FA functionality ratio of the copolymer on the substrate had a significant influence on the adhesion of HeLa cells, and our experiments revealed that the affinity of the substrate to the cells declined dramatically with the decrease of functionality ratio. This was believed to be caused by the polydispersity of PMOXA tethers, as supported by GPC and ToF-SIMS data. As a proof of concept in the application of our material, we demonstrated successful recovery of HeLa cells from mixture with MCF-7 (1:100) on the copolymer-coated glass, and our results showed that both high sensitivity (95.6 ± 13.3%) and specificity (24.3 ± 8.6%) were achieved.
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Affiliation(s)
- Yin Chen
- Division of Biomedical Engineering, The Hong Kong University of Science and Technology , Hong Kong, China
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19
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Bader SL, Luescher MU, Gademann K. Synthesis of maculalactone A and derivatives for environmental fate tracking studies. Org Biomol Chem 2015; 13:199-206. [DOI: 10.1039/c4ob02042a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Labelled probes of the antifouling natural product, maculalactone A, allow for distribution studies in Artemia salina.
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Affiliation(s)
- Samuel L. Bader
- Department of Chemistry
- University of Basel
- 4056 Basel
- Switzerland
| | | | - Karl Gademann
- Department of Chemistry
- University of Basel
- 4056 Basel
- Switzerland
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20
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Varisco M, Khanna N, Brunetto PS, Fromm KM. New antimicrobial and biocompatible implant coating with synergic silver-vancomycin conjugate action. ChemMedChem 2014; 9:1221-30. [PMID: 24799389 DOI: 10.1002/cmdc.201400072] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 12/13/2022]
Abstract
Materials foreign to the body are used ever more frequently, as increasing numbers of patients require implants. As a consequence, the numbers of implant-related infections have grown as well, and with increasing resistance. Treatments often fail; thus, new antibacterial coating strategies are being developed by scientists to avoid, or at least strongly reduce, bacterial adhesion to implant surfaces. In this study, we focused on producing a self-protective coating combining silver(I) ions and a vancomycin-derived molecule, intelligent pyridinate vancomycin (IPV), with a synergetic and effective action against bacteria. These Ag(I) -IPV conjugate-coated surfaces are well characterized and exhibit strong bactericidal activity in vitro against Staphylococci strains. Furthermore, the released quantities of both drugs from the coated surfaces do not affect their biocompatibility and soft tissue integration. These newly developed Ag(I) -IPV conjugate coatings thus represent a possible and efficient protection method against bacterial adhesion and biofilm formation during and after implant surgery.
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Affiliation(s)
- Massimo Varisco
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg (Switzerland)
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21
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Khalil F, Franzmann E, Ramcke J, Dakischew O, Lips KS, Reinhardt A, Heisig P, Maison W. Biomimetic PEG-catecholates for stabile antifouling coatings on metal surfaces: Applications on TiO2 and stainless steel. Colloids Surf B Biointerfaces 2014; 117:185-92. [DOI: 10.1016/j.colsurfb.2014.02.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/04/2014] [Accepted: 02/12/2014] [Indexed: 12/24/2022]
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22
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Wender PA, Donnelly AC, Loy BA, Near KE, Staveness D. Rethinking the Role of Natural Products: Function-Oriented Synthesis, Bryostatin, and Bryologs. METHODS AND PRINCIPLES IN MEDICINAL CHEMISTRY 2014. [DOI: 10.1002/9783527676545.ch14] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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23
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Mi L, Jiang S. Integrated antimicrobial and nonfouling zwitterionic polymers. Angew Chem Int Ed Engl 2014; 53:1746-54. [PMID: 24446141 DOI: 10.1002/anie.201304060] [Citation(s) in RCA: 405] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 07/18/2013] [Indexed: 12/27/2022]
Abstract
Zwitterionic polymers are generally viewed as a new class of nonfouling materials. Unlike their poly(ethylene glycol) (PEG) counterparts, zwitterionic polymers have a broader chemical diversity and greater freedom for molecular design. In this Minireview, we highlight recent microbiological applications of zwitterionic polymers and their derivatives, with an emphasis on several unique molecular strategies to integrate antimicrobial and nonfouling properties. We will also discuss our insights into the bacterial nonfouling performance of zwitterionic polymers and one example of engineering zwitterionic polymer derivatives for antimicrobial wound-dressing applications.
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Affiliation(s)
- Luo Mi
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195 (USA)
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24
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Mi L, Jiang S. Zwitterionische Polymere mit antimikrobiellen und Nonfouling-Eigenschaften. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201304060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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25
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Komnatnyy VV, Chiang WC, Tolker-Nielsen T, Givskov M, Nielsen TE. Bacteria-Triggered Release of Antimicrobial Agents. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307975] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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26
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Komnatnyy VV, Chiang WC, Tolker-Nielsen T, Givskov M, Nielsen TE. Bacteria-triggered release of antimicrobial agents. Angew Chem Int Ed Engl 2013; 53:439-41. [PMID: 24288347 DOI: 10.1002/anie.201307975] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/18/2013] [Indexed: 11/11/2022]
Abstract
Medical devices employed in healthcare practice are often susceptible to microbial contamination. Pathogenic bacteria may attach themselves to device surfaces of catheters or implants by formation of chemically complex biofilms, which may be the direct cause of device failure. Extracellular bacterial lipases are particularly abundant at sites of infection. Herein it is shown how active or proactive compounds attached to polymeric surfaces using lipase-sensitive linkages, such as fatty acid esters or anhydrides, may be released in response to infection. Proof-of-concept of the responsive material is demonstrated by the bacteria-triggered release of antibiotics to control bacterial populations and signaling molecules to modulate quorum sensing. The self-regulating system provides the basis for the development of device-relevant polymeric materials, which only release antibiotics in dependency of the titer of bacteria surrounding the medical device.
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Affiliation(s)
- Vitaly V Komnatnyy
- Department of Chemistry, Technical University of Denmark, Kgs. Lyngby, 2800 (Denmark)
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27
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Abreu AC, Tavares RR, Borges A, Mergulhão F, Simões M. Current and emergent strategies for disinfection of hospital environments. J Antimicrob Chemother 2013; 68:2718-32. [PMID: 23869049 PMCID: PMC7109789 DOI: 10.1093/jac/dkt281] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A significant number of hospital-acquired infections occur due to inefficient disinfection of hospital surfaces, instruments and rooms. The emergence and wide spread of multiresistant forms of several microorganisms has led to a situation where few compounds are able to inhibit or kill the infectious agents. Several strategies to disinfect both clinical equipment and the environment are available, often involving the use of antimicrobial chemicals. More recently, investigations into gas plasma, antimicrobial surfaces and vapour systems have gained interest as promising alternatives to conventional disinfectants. This review provides updated information on the current and emergent disinfection strategies for clinical environments.
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Affiliation(s)
- Ana C Abreu
- LEPAE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
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28
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Baramov T, Keijzer K, Irran E, Mösker E, Baik MH, Süssmuth R. Synthesis and structural characterization of hexacoordinate silicon, germanium, and titanium complexes of the E. coli siderophore enterobactin. Chemistry 2013; 19:10536-42. [PMID: 23821482 DOI: 10.1002/chem.201301825] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Indexed: 11/07/2022]
Abstract
The E. coli siderophore enterobactin, one of the strongest Fe(III) chelators known to date, is also capable of binding Si(IV) under physiological conditions. We report on the synthesis and structural characterization of the tris(catecholate) Si(IV) -enterobactin complex and its Ge(IV) and Ti(IV) analogues. Comparative structural analysis, supported by quantum-chemical calculations, reveals the correlation between the ionic radius and the structural changes in enterobactin upon complexation.
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Affiliation(s)
- Todor Baramov
- Technische Universität Berlin, Fakultät II, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany
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29
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Sedó J, Saiz-Poseu J, Busqué F, Ruiz-Molina D. Catechol-based biomimetic functional materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013. [PMID: 23180685 DOI: 10.1002/adma.201202343] [Citation(s) in RCA: 474] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Catechols are found in nature taking part in a remarkably broad scope of biochemical processes and functions. Though not exclusively, such versatility may be traced back to several properties uniquely found together in the o-dihydroxyaryl chemical function; namely, its ability to establish reversible equilibria at moderate redox potentials and pHs and to irreversibly cross-link through complex oxidation mechanisms; its excellent chelating properties, greatly exemplified by, but by no means exclusive, to the binding of Fe(3+); and the diverse modes of interaction of the vicinal hydroxyl groups with all kinds of surfaces of remarkably different chemical and physical nature. Thanks to this diversity, catechols can be found either as simple molecular systems, forming part of supramolacular structures, coordinated to different metal ions or as macromolecules mostly arising from polymerization mechanisms through covalent bonds. Such versatility has allowed catechols to participate in several natural processes and functions that range from the adhesive properties of marine organisms to the storage of some transition metal ions. As a result of such an astonishing range of functionalities, catechol-based systems have in recent years been subject to intense research, aimed at mimicking these natural systems in order to develop new functional materials and coatings. A comprehensive review of these studies is discussed in this paper.
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Affiliation(s)
- Josep Sedó
- Centro de Investigación en Nanociencia y Nanotecnología, Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
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30
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García-Fernández L, Cui J, Serrano C, Shafiq Z, Gropeanu RA, Miguel VS, Ramos JI, Wang M, Auernhammer GK, Ritz S, Golriz AA, Berger R, Wagner M, del Campo A. Antibacterial strategies from the sea: polymer-bound cl-catechols for prevention of biofilm formation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:529-533. [PMID: 23139083 DOI: 10.1002/adma.201203362] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 09/21/2012] [Indexed: 06/01/2023]
Abstract
Inspired by the amino acid 2-chloro-4,5-dihydroxyphenylalanine (Cl-DOPA), present in the composition of the proteinaceous glue of the sandcastle worm Phragmatopoma californica, a simple strategy is presented to confer antifouling properties to polymer surfaces using (but not releasing) a bioinspired biocide. Cl-Dopamine is used to functionalize polymer materials and hydrogel films easily, to prevent biofilm formation on them.
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31
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32
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Lignopurines: A new family of hybrids between cyclolignans and purines. Synthesis and biological evaluation. Eur J Med Chem 2012; 58:377-89. [DOI: 10.1016/j.ejmech.2012.10.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/15/2012] [Accepted: 10/16/2012] [Indexed: 11/22/2022]
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33
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Mi L, Jiang S. Synchronizing nonfouling and antimicrobial properties in a zwitterionic hydrogel. Biomaterials 2012; 33:8928-33. [DOI: 10.1016/j.biomaterials.2012.09.011] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Accepted: 09/09/2012] [Indexed: 11/30/2022]
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34
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Gomes J, Grunau A, Lawrence AK, Eberl L, Gademann K. Bioinspired, releasable quorum sensing modulators. Chem Commun (Camb) 2012; 49:155-7. [PMID: 23169441 DOI: 10.1039/c2cc37287h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the synthesis and immobilization of natural product hybrids featuring an acyl-homoserine lactone and a nitrodopamine onto biocompatible TiO(2) surfaces through an operationally simple dip-and-rinse procedure. The resulting immobilized hybrids were shown to be powerful quorum sensing (QS) activators in Pseudomonas strains acting by slow release from the surface.
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Affiliation(s)
- José Gomes
- Department of Chemistry, NCCR Chemical Biology, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland
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35
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Mei Y, Yao C, Fan K, Li X. Surface modification of polyacrylonitrile nanofibrous membranes with superior antibacterial and easy-cleaning properties through hydrophilic flexible spacers. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.06.021] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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36
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37
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Gerber LC, Koehler FM, Grass RN, Stark WJ. Incorporation of Penicillin-Producing Fungi into Living Materials to Provide Chemically Active and Antibiotic-Releasing Surfaces. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204337] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Gerber LC, Koehler FM, Grass RN, Stark WJ. Incorporation of Penicillin-Producing Fungi into Living Materials to Provide Chemically Active and Antibiotic-Releasing Surfaces. Angew Chem Int Ed Engl 2012; 51:11293-6. [DOI: 10.1002/anie.201204337] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 09/12/2012] [Indexed: 11/09/2022]
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39
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Coneski PN, Fulmer PA, Wynne JH. Enhancing the fouling resistance of biocidal urethane coatings via surface chemistry modulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7039-7048. [PMID: 22480389 DOI: 10.1021/la300749a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A group of novel cross-linked polyurethane materials with varying ratios of hydroxyl-terminated macrodiols and tethered quaternary ammonium biocides have been prepared. The resulting materials had a wide range of thermal, mechanical, and surface properties, dictated by the macrodiol composition and biocide concentration. The complex interplay between surface chemistry and biocide concentration was shown to have a profound effect on the fouling resistance of these materials. While the combination of quaternary ammonium salt (QAS) diols with poly(tetramethylene oxide) macrodiols did not result in any enhancement of fouling resistance, addition of biocides to poly(ethylene glycol)-containing urethanes resulted in up to a 90% increase in biocidal activity compared to control materials while reducing the ability for microbes to adhere to the surface by an additional 60%. Materials prepared with polybutadiene macrodiols underwent a thermally induced oxidation, resulting in partial decomposition of the quaternary ammonium salt biocide and joint antimicrobial activity arising from remaining QAS and peroxide compounds.
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Affiliation(s)
- Peter N Coneski
- Chemistry Division, Naval Research Laboratory, Washington, DC 20375, United States
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40
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Shalev T, Gopin A, Bauer M, Stark RW, Rahimipour S. Non-leaching antimicrobial surfaces through polydopamine bio-inspired coating of quaternary ammonium salts or an ultrashort antimicrobial lipopeptide. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13994k] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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41
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Li P, Li X, Saravanan R, Li CM, Leong SSJ. Antimicrobial macromolecules: synthesis methods and future applications. RSC Adv 2012. [DOI: 10.1039/c2ra01297a] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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42
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Kirst HA. 12th International Conference on the Chemistry of Antibiotics and other Bioactive Compounds (ICCA-12). J Antibiot (Tokyo) 2011; 65:173-174. [PMID: 22167158 DOI: 10.1038/ja.2011.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Ducho C. A Kaleidoscope of Contemporary Organic Chemistry: The 46th Bürgenstock Conference. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/anie.201103875] [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]
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44
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Ducho C. Ein Kaleidoskop der zeitgenössischen organischen Chemie: die 46. Bürgenstock-Konferenz. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Inhibition of bacterial adhesion on biocompatible zwitterionic SBA-15 mesoporous materials. Acta Biomater 2011; 7:2977-85. [PMID: 21392588 DOI: 10.1016/j.actbio.2011.03.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 02/10/2011] [Accepted: 03/03/2011] [Indexed: 11/24/2022]
Abstract
In this manuscript in vitro bacterial adhesion assays using Escherichia coli on different SBA-15 nanostructured ceramics have been performed. For this purpose pure silica, NH(2) or COOH monofunctionalized, and NH(2)/COOH bifunctionalized SBA-15 mesoporous materials have been used. Material characterization reveals that both NH(2)/COOH and NH(2) functionalized SBA-15 materials exhibit a zwitterionic character due to the presence of -NH(3)(+)/COO(-) or -NH(3)(+)/SiO(-) moieties, respectively. In vitro adhesion assays have been carried out at the pH at which the zwitterionic nature of both of these samples is preserved, i.e. pH 5.5. The results show that the presence of both positive and negative moieties with an overall neutral charge leads to reduced E. coli adhesiveness. In vitro tests with cultured human Saos-2 osteoblasts have been carried out to evaluate the biocompatibility of the different materials at the physiological pH of 7.4. The results demonstrate that all materials exhibit good biocompatibility, with Saos-2 osteoblasts adhering, proliferating and maintaining their morphological and functional characteristics. This novel family of zwitterionic mesoporous materials opens up promising expectations in diverse biomedical applications, such as preventing some side-effects associated with bone implant infections.
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Hong S, Kim KY, Wook HJ, Park SY, Lee KD, Lee DY, Lee H. Attenuation of the in vivo toxicity of biomaterials by polydopamine surface modification. Nanomedicine (Lond) 2011; 6:793-801. [DOI: 10.2217/nnm.11.76] [Citation(s) in RCA: 231] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Aims: Polydopamine coating is emerging as a useful method of surface functionalization due to the ability of this compound to form a nanometer-scale organic thin film on virtually any material surface to which proteins, peptides, oligonucleotides, metal ions or synthetic polymers are able to be attached. The unique properties of polydopamine make this technique suitable for nanomedicine. To facilitate the use of polydopamine, evaluation of toxicity is of great importance. In this article, we investigated the in vivo toxicity of polydopamine. Results: We found that the polydopamine functions as a biocompatible layer, attenuating adverse biological responses caused by intrinsic properties of the coated material. One-step polydopamine coating greatly reduced the inflammatory response to poly-L-lactic acid surfaces and the immunological responses of blood on quantum dots were also reduced. Conclusion: Our results indicate that polydopamine provides a versatile platform that can reduce the in vivo toxicity of biomaterials that contact tissue or blood.
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Affiliation(s)
- Seonki Hong
- Department of Chemistry, KAIST, 335 Science Rd, Daejeon, 305-701, Republic of Korea
| | - Keum Yeon Kim
- The Graduate School of Nanoscience & Technology (WCU), KAIST, 335 Science Rd. Daejeon, 305-701, Republic of Korea
| | - Hwang Jin Wook
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-du, Seoul 133-791, Republic of Korea
| | - Sung Young Park
- Department of Chemical & Biological Engineering, Chungju National University, 50 Daehak Rd. Chung-Ju City 380-702, Republic of Korea
| | - Kang Dae Lee
- Department of Otolaryngology-Head & Neck Surgery, College of Medicine, Kosin University, Amnam-dong 34, Busan, 602-702, Republic of Korea
| | - Dong Yun Lee
- Department of Bioengineering, Hanyang University, 17 Haengdang-dong, Seongdong-du, Seoul 133-791, Republic of Korea
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Franzmann E, Khalil F, Weidmann C, Schröder M, Rohnke M, Janek J, Smarsly BM, Maison W. A Biomimetic Principle for the Chemical Modification of Metal Surfaces: Synthesis of Tripodal Catecholates as Analogues of Siderophores and Mussel Adhesion Proteins. Chemistry 2011; 17:8596-603. [DOI: 10.1002/chem.201100715] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Indexed: 11/06/2022]
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48
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Banerjee I, Pangule RC, Kane RS. Antifouling coatings: recent developments in the design of surfaces that prevent fouling by proteins, bacteria, and marine organisms. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:690-718. [PMID: 20886559 DOI: 10.1002/adma.201001215] [Citation(s) in RCA: 1571] [Impact Index Per Article: 120.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 06/06/2010] [Indexed: 05/21/2023]
Abstract
The major strategies for designing surfaces that prevent fouling due to proteins, bacteria, and marine organisms are reviewed. Biofouling is of great concern in numerous applications ranging from biosensors to biomedical implants and devices, and from food packaging to industrial and marine equipment. The two major approaches to combat surface fouling are based on either preventing biofoulants from attaching or degrading them. One of the key strategies for imparting adhesion resistance involves the functionalization of surfaces with poly(ethylene glycol) (PEG) or oligo(ethylene glycol). Several alternatives to PEG-based coatings have also been designed over the past decade. While protein-resistant coatings may also resist bacterial attachment and subsequent biofilm formation, in order to overcome the fouling-mediated risk of bacterial infection it is highly desirable to design coatings that are bactericidal. Traditional techniques involve the design of coatings that release biocidal agents, including antibiotics, quaternary ammonium salts (QAS), and silver, into the surrounding aqueous environment. However, the emergence of antibiotic- and silver-resistant pathogenic strains has necessitated the development of alternative strategies. Therefore, other techniques based on the use of polycations, enzymes, nanomaterials, and photoactive agents are being investigated. With regard to marine antifouling coatings, restrictions on the use of biocide-releasing coatings have made the generation of nontoxic antifouling surfaces more important. While considerable progress has been made in the design of antifouling coatings, ongoing research in this area should result in the development of even better antifouling materials in the future.
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Affiliation(s)
- Indrani Banerjee
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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Ye Q, Zhou F, Liu W. Bioinspired catecholic chemistry for surface modification. Chem Soc Rev 2011; 40:4244-58. [DOI: 10.1039/c1cs15026j] [Citation(s) in RCA: 966] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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