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Nudelman R, Zuarets S, Lev M, Gavriely S, Meshi L, Zucker I, Richter S. One-pot green bio-assisted synthesis of highly active catalytic palladium nanoparticles in porcine gastric mucin for environmental applications. NANOSCALE ADVANCES 2023; 5:6115-6122. [PMID: 37941943 PMCID: PMC10628991 DOI: 10.1039/d3na00385j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 09/05/2023] [Indexed: 11/10/2023]
Abstract
In this work, palladium nanoparticles were synthesized using one-pot synthesis utilizing porcine gastric mucin glycoproteins as reducing and capping agents. It is shown that the particles exhibited noticeable catalytic activity through both nitrophenol reduction and Suzuki-Miyaura coupling reactions. The catalytic performance was demonstrated with exceptionally high product yield, a fast reaction rate, and low catalyst use. The palladium-mucin composites obtained could be used in particle solution and as hydrogel catalysts to increase their reusability for at least ten reaction cycles with minimum loss in their catalytic effectiveness.
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Affiliation(s)
- Roman Nudelman
- Department of Materials Science and Engineering, University Center for Nanoscience and Nanotechnology, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
| | - Shir Zuarets
- Department of Materials Science and Engineering, University Center for Nanoscience and Nanotechnology, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
| | - Meiron Lev
- Department of Materials Science and Engineering, University Center for Nanoscience and Nanotechnology, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
| | - Shira Gavriely
- Department of Materials Science and Engineering, University Center for Nanoscience and Nanotechnology, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
- School of Mechanical Engineering, The Porter School of Environmental and Earth Sciences, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
| | - Louisa Meshi
- Department of Materials Engineering, Ben-Gurion University of the Negev PO Box 653 Beer-Sheva 84105 Israel
| | - Ines Zucker
- School of Mechanical Engineering, The Porter School of Environmental and Earth Sciences, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
| | - Shachar Richter
- Department of Materials Science and Engineering, University Center for Nanoscience and Nanotechnology, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University 69978 Tel-Aviv Israel
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Nudelman R, Alhmoud H, Delalat B, Kaur I, Vitkin A, Bourgeois L, Goldfarb I, Cifuentes-Rius A, Voelcker NH, Richter S. From nanoparticles to crystals: one-pot programmable biosynthesis of photothermal gold structures and their use for biomedical applications. J Nanobiotechnology 2022; 20:482. [PMID: 36384747 PMCID: PMC9670439 DOI: 10.1186/s12951-022-01680-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/18/2022] [Indexed: 11/17/2022] Open
Abstract
Inspired by nature, green chemistry uses various biomolecules, such as proteins, as reducing agents to synthesize metallic nanostructures. This methodology provides an alternative route to conventional harsh synthetic processes, which include polluting chemicals. Tuning the resulting nanostructure properties, such as their size and shape, is challenging as the exact mechanism involved in their formation is still not well understood. This work reports a well-controlled method to program gold nanostructures' shape, size, and aggregation state using only one protein type, mucin, as a reduction and capping material in a one-pot bio-assisted reaction. Using mucin as a gold reduction template while varying its tertiary structure via the pH of the synthesis, we demonstrate that spherical, coral-shaped, and hexagonal gold crystals can be obtained and that the size can be tuned over three orders of magnitude. This is achieved by leveraging the protein's intrinsic reducing properties and pH-induced conformational changes. The systematic study of the reaction kinetics and growth steps developed here provides an understanding of the mechanism behind this phenomenon. We further show that the prepared gold nanostructures exhibit tunable photothermal properties that can be optimized for various hyperthermia-induced antibacterial applications.
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Nudelman R, Gavriely S, Bychenko D, Barzilay M, Gulakhmedova T, Gazit E, Richter S. Bio-assisted synthesis of bimetallic nanoparticles featuring antibacterial and photothermal properties for the removal of biofilms. J Nanobiotechnology 2021; 19:452. [PMID: 34963478 PMCID: PMC8715638 DOI: 10.1186/s12951-021-01183-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/04/2021] [Indexed: 12/02/2022] Open
Abstract
Biofilms are responsible for about considerable amounts of cases of bacterial infections in humans. They are considered a major threat to transplant and chronic wounds patients due to their highly resistant nature against antibacterial materials and due to the limited types of techniques that can be applied to remove them. Here we demonstrate a successful in-situ bio-assisted synthesis of dual functionality nanoparticles composed of Silver and Gold. This is done using a jellyfish-based scaffold, an antibacterial material as the templating host in the synthesis. We further explore the scaffold’s antibacterial and photothermal properties against various gram-negative and positive model bacteria with and without photo-induced heating at the Near-IR regime. We show that when the scaffold is loaded with these bimetallic nanoparticles, it exhibits dual functionality: Its photothermal capabilities help to disrupt and remove bacterial colonies and mature biofilms, and its antibacterial properties prevent the regrowth of new biofilms. ![]()
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Affiliation(s)
- Roman Nudelman
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel-Aviv, Israel.,University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel
| | - Shira Gavriely
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel-Aviv, Israel.,University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel
| | - Darya Bychenko
- University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel.,The Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, The George S. Wise, Tel-Aviv, Israel
| | - Michal Barzilay
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel-Aviv, Israel.,University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel
| | - Tamilla Gulakhmedova
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel-Aviv, Israel.,University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel
| | - Ehud Gazit
- University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel.,The Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, The George S. Wise, Tel-Aviv, Israel
| | - Shachar Richter
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel-Aviv, Israel. .,University Center for Nano Science and Nanotechnology, Tel-Aviv, Israel.
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Onnainty R, Usseglio N, Bonafé Allende JC, Granero GE. Exploring a new free-standing polyelectrolyte (PEM) thin film as a predictive tool for drug-mucin interactions: Insights on drug transport through mucosal surfaces. Int J Pharm 2021; 604:120764. [PMID: 34087412 DOI: 10.1016/j.ijpharm.2021.120764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 11/29/2022]
Abstract
The main objective of the present work was to design a biomimetic free-standing multilayered PEM film, constructed by the layer-by-layer (LbL) assembly approach, based on natural biopolymers and intended to recreate the complex mucus-mimetic matrices in order to provide mechanistic insights into biophysical interactions between drugs and the physiological gel-forming mucin network of mucus that covers the mucosal epithelia named as(CS/ALG)/(PGM) PEM film. The obtained results indicate that mucin may delay or increase drug precipitation on the mucus layer, depending on specific drug-mucin interactions driving drug supersaturation or drug crystallization phenomena. It was found that the drug lipophilicity characteristics governed the mucin binding degree, which had an influencing role on the drug translocation across this gel-like hydrogel. Moreover, the ionization of these drugs did not have a significant role on the drug binding ability to mucin as much as the lipophilicity properties did. The (CS/ALG)/(PGM) PEM film may be a promising tool to routine testing drug-mucus interactions to evaluate biophysical interactions between this protective barrier of the organism against different drug therapeutic products or external aggressive agents, leading to the optimization of drug delivery products or drugs for particular disease states.
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Affiliation(s)
- R Onnainty
- Unidad de Investigación y Desarrollo en TecnologíaFarmacéutica (UNITEFA), CONICET and Departamento de CienciasFarmacéuticas, Facultad de CienciasQuímicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000-HUA Córdoba, Argentina
| | - N Usseglio
- Unidad de Investigación y Desarrollo en TecnologíaFarmacéutica (UNITEFA), CONICET and Departamento de CienciasFarmacéuticas, Facultad de CienciasQuímicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000-HUA Córdoba, Argentina
| | - J C Bonafé Allende
- Departamento de QuímicaOrgánica, Facultad de CienciasQuímicas (Universidad Nacional de Córdoba), IPQA-CONICET, Haya de la Torre y Av. Medina Allende, 5000 Córdoba, Argentina
| | - G E Granero
- Unidad de Investigación y Desarrollo en TecnologíaFarmacéutica (UNITEFA), CONICET and Departamento de CienciasFarmacéuticas, Facultad de CienciasQuímicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000-HUA Córdoba, Argentina.
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