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Zhou L, Li W, Wen Y, Fu X, Leng F, Yang J, Chen L, Yu X, Yu C, Yang Z. Chem-inspired hollow ceria nanozymes with lysosome-targeting for tumor synergistic phototherapy. J Mater Chem B 2021; 9:2515-2523. [PMID: 33659973 DOI: 10.1039/d0tb02837a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The precise operation of the hypoxic tumor microenvironment presents a promising way to improve treatment efficacy, in particular in tumor synergistic phototherapy. This work reports an innovative approach to build adenosine triphosphate-modified hollow ceria nanozymes (ATP-HCNPs@Ce6) that manipulate tumor hypoxia to effectively achieve drug delivery. Hollow ceria nanoparticles (HCNPs) exhibit a controllable hollow structure through varying nitric acid concentrations in the nanocomposites. Specifically, ATP modification makes HCNPs exceptionally biocompatible and stable and acts as a regulator of HCNP enzymatic activity. In the stage of drug loading, newly prepared ATP-HCNPs@Ce6 serves as an in situ oxygen-generating agent because of its ability to simulate catalase. Therefore, ATP-HCNPs@Ce6 has adjustable enzymatic properties that act like a "switch" to selectively supply oxygen in response to high levels of hydrogen peroxide expression and the slightly acidic lysosomal environment of the tumor to enhance lysosome-targeted photodynamic therapy. Moreover, the obvious anticancer effects of ATP-HCNPs@Ce6 are demonstrated in vitro and in vivo. Overall, a simple and rapid self-assembly strategy to form and modify multifunctional HCNPs is reported, which may further propel their application in the field of precision tumor treatment.
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Affiliation(s)
- Li Zhou
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Wei Li
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Yilin Wen
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Xiaoxue Fu
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Feng Leng
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Jiaxin Yang
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Lu Chen
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Xiaojuan Yu
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Chao Yu
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Zhangyou Yang
- Research Center of Pharmaceutical Preparations and Nanomedicine, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
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Varunkumar K, Anusha C, Saranya T, Ramalingam V, Raja S, Ravikumar V. Avicennia marina engineered nanoparticles induce apoptosis in adenocarcinoma lung cancer cell line through p53 mediated signaling pathways. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.04.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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3
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Hérault N, Wagner J, Abram SL, Widmer J, Horvath L, Vanhecke D, Bourquin C, Fromm KM. Silver-Containing Titanium Dioxide Nanocapsules for Combating Multidrug-Resistant Bacteria. Int J Nanomedicine 2020; 15:1267-1281. [PMID: 32161457 PMCID: PMC7050041 DOI: 10.2147/ijn.s231949] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 12/24/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Joint arthroplasty has improved the quality of life of patients worldwide, but infections of the prosthesis are frequent and cause significant morbidity. Antimicrobial coatings for implants promise to prevent these infections. METHODS We have synthesized nanocapsules of titanium dioxide in amorphous or anatase form containing silver as antibacterial agent and tested their impact on bacterial growth. Furthermore, we explored the possible effect of the nanocapsules on the immune system. First, we studied their uptake into macrophages using a combination of electron microscopy and energy-dispersive spectroscopy. Second, we exposed immune cells to the nanocapsules and checked their activation state by flow cytometry and enzyme-linked immunosorbent assay. RESULTS Silver-containing titanium dioxide nanocapsules show strong antimicrobial activity against both E. coli and S. aureus and even against a multidrug-resistant strain of S. aureus. We could demonstrate the presence of the nanocapsules in macrophages, but, importantly, the nanocapsules did not affect cell viability and did not activate proinflammatory responses at doses up to 20 μg/mL. CONCLUSION Our bactericidal silver-containing titanium dioxide nanocapsules fulfill important prerequisites for biomedical use and represent a promising material for the coating of artificial implants.
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Affiliation(s)
- Nelly Hérault
- Department of Chemistry, University of Fribourg, Fribourg1700, Switzerland
| | - Julia Wagner
- Department of Medicine, University of Fribourg, Fribourg1700, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva1211, Switzerland
- Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Faculty of Medicine, University of Geneva, Geneva1211, Switzerland
| | - Sarah-Luise Abram
- Department of Chemistry, University of Fribourg, Fribourg1700, Switzerland
| | - Jérôme Widmer
- Department of Medicine, University of Fribourg, Fribourg1700, Switzerland
| | - Lenke Horvath
- Department of Chemistry, University of Fribourg, Fribourg1700, Switzerland
| | - Dimitri Vanhecke
- Adolphe Merkle Institute, University of Fribourg, Fribourg1700, Switzerland
| | - Carole Bourquin
- Department of Medicine, University of Fribourg, Fribourg1700, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva1211, Switzerland
- Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Faculty of Medicine, University of Geneva, Geneva1211, Switzerland
| | - Katharina M Fromm
- Department of Chemistry, University of Fribourg, Fribourg1700, Switzerland
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Wang Z, Yu R. Hollow Micro/Nanostructured Ceria-Based Materials: Synthetic Strategies and Versatile Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1800592. [PMID: 30276863 DOI: 10.1002/adma.201800592] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 07/04/2018] [Indexed: 06/08/2023]
Abstract
Hollow micro/nanostructured CeO2 -based materials (HMNCMs) have triggered intensive attention as a result of their unique structural traits, which arise from their hollowness and the fascinating physicochemical properties of CeO2 . This attention has led to widespread applications with improved performance. Herein, a comprehensive overview of methodologies applied for the synthesis of various hollow structures, such as hollow spheres, nanotubes, nanoboxes, and multishelled hollow spheres, is provided. The synthetic strategies toward CeO2 hollow structures are classified into three major categories: 1) well-established template-assisted (hard-, soft-, and in situ template) methods; 2) newly emerging self-template approaches, including selective etching, Ostwald ripening, the Kirkendall effect, galvanic replacement, etc.; 3) bottom-up self-organized formation synthesis (namely, oriented attachment and self-deformation). Their underlying mechanisms are concisely described and discussed in detail, the differences and similarities of which are compared transversely and longitudinally. Niche applications of HMNCMs in a wide range of fields including catalysis, energy conversion and storage, sensors, absorbents, photoluminescence, and biomedicines are reviewed. Finally, an outlook of future opportunities and challenges in the synthesis and application of CeO2 -based hollow structures is also presented.
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Affiliation(s)
- Zumin Wang
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Ranbo Yu
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, P. R. China
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5
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Chae SY, Lee SY, Joo OS. Directly synthesized silver nanoparticles on gas diffusion layers by electrospray pyrolysis for electrochemical CO2 reduction. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.02.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Recognition of ceric ion in aqueous medium at pico-molar level: Colorimetric, fluorimetric and single crystal X-ray structural evidences. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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7
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Wu Q, Wei G, Xu Z, Han J, Xi J, Fan L, Gao L. Mechanistic Insight into the Light-Irradiated Carbon Capsules as an Antibacterial Agent. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25026-25036. [PMID: 29989399 DOI: 10.1021/acsami.8b04932] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Infections caused by bacteria are a growing global challenge for public health as bacteria develop resistance, which will cause the failure of anti-infective treatment eventually. An effective alternative strategy to traditional antibacterial therapy is utilizing reactive oxygen species (ROS) to kill bacteria. Here, we report a simple route to prepare PEGylated nitrogen-doped carbon capsules (PEG-N-CCs) as an antibacterial agent. The PEG-N-CCs can translate near-infrared light (NIR) into heat and produce a high concentration of ROS triggered by NIR irradiation. Both heating and ROS are critical to destroy the outer membranes and rupture cell bodies, causing DNA fragmentation and glutathione oxidation both in Gram-negative Escherichia coli, Gram-positive Staphylococcus aureus, and their multidrug-resistant strains. Moreover, PEG-N-CCs plus NIR irradiation can efficiently scavenge the existing biofilms and prevent the formation of new biofilms, killing planktonic bacteria as well as those within the biofilm. Our studies prove that the PEG-N-CCs plus NIR irradiation can provide a simple and effective platform for combating bacteria, employing carbon nanomaterials as an antibacterial alternative for treatment of infectious diseases.
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Affiliation(s)
- Qiuwen Wu
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
| | - Gen Wei
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
| | - Zhuobin Xu
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
| | - Jing Han
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
| | - Juqun Xi
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases , Yangzhou 225001 , Jiangsu , China
| | - Lei Fan
- School of Chemistry and Chemical Engineering , Yangzhou University , Yangzhou 225002 , Jiangsu , China
| | - Lizeng Gao
- Department of Pharmacology, Institute of Translational Medicine, School of Medicine , Yangzhou University , Yangzhou 225001 , Jiangsu , China
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8
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De Leersnyder I, De Gelder L, Van Driessche I, Vermeir P. Influence of growth media components on the antibacterial effect of silver ions on Bacillus subtilis in a liquid growth medium. Sci Rep 2018; 8:9325. [PMID: 29921908 PMCID: PMC6008294 DOI: 10.1038/s41598-018-27540-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/04/2018] [Indexed: 11/09/2022] Open
Abstract
Numerous studies have investigated the antibacterial effect of both silver ions and silver nanomaterials on a large diversity of environmentally and clinically relevant bacteria. However, contradictory results are reported in which inhibition concentrations were varying by a 10-fold. This study investigated whether this variance in results could be attributed to the difference in experimental conditions, especially the microbial growth medium. B. subtilis was exposed to 500 µg L-1 Ag+ in liquid growth media with different concentrations of some commonly used media components: tryptone, yeast extract, Cl-, and S2-. The toxic effect was investigated by means of three complementary analysis techniques: (i) analyzing the growth curves obtained by optical density measurements, (ii) using flow cytometry, and (iii) by transmission electron microscopy. The silver ion toxicity towards B. subtilis decreased as more tryptone, yeast extract, or S2- was present. This study demonstrates that the medium composition, rarely acknowledged as an important experimental factor in bacterial toxicity studies, has a profound impact on the observed silver toxicity towards B. subtilis.
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Affiliation(s)
- Ilse De Leersnyder
- Department of Green Chemistry and Technology, Laboratory of Chemical Analysis (LCA), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
| | - Leen De Gelder
- Department of Biotechnology, Laboratory for Environmental Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Isabel Van Driessche
- Department of Inorganic and Physical Chemistry, Sol-gel Center for Research on Inorganic Powders and Thin film Synthesis (SCRiPTS), Faculty of Science, Ghent University, Ghent, Belgium
| | - Pieter Vermeir
- Department of Green Chemistry and Technology, Laboratory of Chemical Analysis (LCA), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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9
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Spezzati G, Fant K, Ahniyaz A, Lundin-Johnson M, Hensen EJM, Langermans H, Hofmann JP. Synthesis, Physicochemical Characterization, and Cytotoxicity Assessment of CeO2
Nanoparticles with Different Morphologies. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Giulia Spezzati
- Laboratory of Inorganic Materials Chemistry; Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Kristina Fant
- Chemistry, Materials and Surfaces; SP Technical Research Institute of Sweden; Box 857 50115 Borås Sweden
| | - Anwar Ahniyaz
- Chemistry, Materials and Surfaces; SP Technical Research Institute of Sweden; Box 5607 11486 Stockholm Sweden
| | - Maria Lundin-Johnson
- Chemistry, Materials and Surfaces; SP Technical Research Institute of Sweden; Box 5607 11486 Stockholm Sweden
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials Chemistry; Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Harm Langermans
- DSM ChemTech Center; ACES Colloids and Interfaces; Urmonderbaan 22 6167 RD Geleen The Netherlands
| | - Jan P. Hofmann
- Laboratory of Inorganic Materials Chemistry; Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513 5600 MB Eindhoven The Netherlands
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10
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Kasyanenko N, Qiushi Z, Bakulev V, Osolodkov M, Sokolov P, Demidov V. DNA Binding with Acetate Bis(1,10-phenanthroline)silver(I) Monohydrate in a Solution and Metallization of Formed Structures. Polymers (Basel) 2017; 9:E211. [PMID: 30970890 PMCID: PMC6432125 DOI: 10.3390/polym9060211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 02/07/2023] Open
Abstract
The study of DNA interaction with the acetate bis(1,10-phenanthroline)silver(I) monohydrate in a solution is of interest both for understanding the mechanism of biological activity of silver compound and for forming ordered structures (DNA fibrils) that can be used to solve various problems in the field of nanotechnology. The analysis of changing the DNA conformation (secondary structure, persistent length and volume effects) during the interaction by the methods of UV spectroscopy with the analysis of DNA melting, circular dichroism, viscosity, flow birefringence, AFM (atomic force microscopy) and SEM (scanning electron microscopy) was performed. The formation of two types of complexes was observed. At lower concentration of compound in DNA solution, silver atoms form the coordination bonds with a macromolecule, while the released phenanthroline ligands intercalate between DNA bases. When the concentration of the compound increases, the phenanthroline ligands form an ordered "layer" around the helix. The excess of silver compounds in the DNA solution (with more than five silver atoms per base pair), DNA precipitation is observed with the formation of long fibrils. It was shown that the binding of silver to DNA during the formation of complexes provides further metallization of the resulting structures with the aid of reducing agents; phenanthroline ligands influence the result of such metallization.
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Affiliation(s)
- Nina Kasyanenko
- Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 3/7, 199037 St. Petersburg, Russia.
| | - Zhang Qiushi
- Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 3/7, 199037 St. Petersburg, Russia.
| | - Vladimir Bakulev
- Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 3/7, 199037 St. Petersburg, Russia.
| | - Mikhail Osolodkov
- Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 3/7, 199037 St. Petersburg, Russia.
| | - Petr Sokolov
- Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 3/7, 199037 St. Petersburg, Russia.
| | - Viktor Demidov
- Pro-Brite Company, Sofiyskaya ul., 93, 192289 St. Petersburg, Russia.
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Hérault N, Fromm KM. Influence of the Sacrificial Polystyrene Removal Pathway on the TiO2
Nanocapsule Structure. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nelly Hérault
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 CH-Fribourg
| | - Katharina M. Fromm
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 CH-Fribourg
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12
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Gagnon J, A. Caruso R, M. Fromm K. Embedding CeO2 nanocontainers in a TiO2 coating on glass surfaces. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.1.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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Gagnon J, A. Caruso R, M. Fromm K. Embedding CeO2 nanocontainers in a TiO2 coating on glass surfaces. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.2.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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14
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Gagnon J, Clift MJD, Vanhecke D, Widnersson IE, Abram SL, Petri-Fink A, Caruso RA, Rothen-Rutishauser B, Fromm KM. Synthesis, characterization, antibacterial activity and cytotoxicity of hollow TiO2-coated CeO2nanocontainers encapsulating silver nanoparticles for controlled silver release. J Mater Chem B 2016; 4:1166-1174. [DOI: 10.1039/c5tb01917f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This novel type of nanocontainers offers the concept of potentially controlling silver delivery for the prevention of implant-associated infections.
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Affiliation(s)
- J. Gagnon
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
- PFPC
| | - M. J. D. Clift
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - D. Vanhecke
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - I. E. Widnersson
- PFPC
- School of Chemistry
- The University of Melbourne
- Melbourne, Victoria 3010
- Australia
| | - S.-L. Abram
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - A. Petri-Fink
- Adolphe Merkle Institute
- University of Fribourg
- 1700 Fribourg
- Switzerland
| | - R. A. Caruso
- PFPC
- School of Chemistry
- The University of Melbourne
- Melbourne, Victoria 3010
- Australia
| | | | - K. M. Fromm
- Department of Chemistry and Fribourg Center for Nanomaterials
- University of Fribourg
- 1700 Fribourg
- Switzerland
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He J, Wang W, Sun F, Shi W, Qi D, Wang K, Shi R, Cui F, Wang C, Chen X. Highly Efficient Phosphate Scavenger Based on Well-Dispersed La(OH)3 Nanorods in Polyacrylonitrile Nanofibers for Nutrient-Starvation Antibacteria. ACS NANO 2015; 9:9292-302. [PMID: 26289016 DOI: 10.1021/acsnano.5b04236] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
La(OH)3 nanorods immobilized in polyacrylonitrile (PAN) nanofibers (PLNFs) were fabricated for the first time by electrospinning and a subsequent in situ surfactant-free precipitation method and then applied as a highly efficient phosphate scavenger to realize nutrient-starvation antibacteria for drinking water security. The immobilization by PAN nanofibers effectively facilitated the in situ formation of the aeolotropic and well-dispersed La(OH)3 nanostructures and, thus, rendered higher phosphate removal efficiency due to more exposed active sites for binding phosphate. The maximum phosphate capture capacity of La(OH)3 nanorods in PAN nanofibers was around 8 times that of the La(OH)3 nanocrystal fabricated by precipitation without PAN protection. Moreover, remarkably fast adsorption kinetics and high removal rate were observed toward low concentration phosphate due to the high activity of our materials, which can result in a stringent phosphate-deficient condition to kill microorganisms in water effectively. The present material is also capable of preventing sanitized water from recontamination by bacteria and keeping water biologically stable for drinking. Impressively, stabilized by PAN nanofibers, the La(OH)3 nanorods can be easily separated out after reactions and avoid leaking into water. The present development has great potential as a promising antimicrobial solution for practical drinking water security and treatment with a negligible environmental footprint.
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Affiliation(s)
- Jiaojie He
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Fenglian Sun
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Wenxin Shi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Dianpeng Qi
- School of Materials Science and Engineering, Nanyang Technological University , 639798, Singapore
| | - Ke Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Ruisha Shi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin 150090, P.R. China
| | - Ce Wang
- Alan G. Macdiarmid Institute, Jilin University , Changchun 130012, China
| | - Xiaodong Chen
- School of Materials Science and Engineering, Nanyang Technological University , 639798, Singapore
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Gagnon J, Fromm KM. Toxicity and Protective Effects of Cerium Oxide Nanoparticles (Nanoceria) Depending on Their Preparation Method, Particle Size, Cell Type, and Exposure Route. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500643] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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