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Okazaki Y, Kusumoto T, Roux S, Hirayama R, Fromm M, Bazzi R, Kodaira S, Kataoka J. Increase of OH radical yields due to the decomposition of hydrogen peroxide by gold nanoparticles under X-ray irradiation. RSC Adv 2024; 14:9509-9513. [PMID: 38516151 PMCID: PMC10953845 DOI: 10.1039/d4ra00208c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/14/2024] [Indexed: 03/23/2024] Open
Abstract
We elucidate the decomposition mechanism of hydrogen peroxide, which is formed by water radiolysis, by gold nanoparticles (GNPs) under X-ray irradiation. The variations in yields of hydrogen peroxide generated in the presence of GNPs are evaluated using the Ghormley technique. The increase of yields of OH radicals has been quantified using Ampliflu® Red solutions. Almost all hydrogen peroxide generated by irradiation of <25 Gy is decomposed by GNPs, while the yield of OH radicals increases by 1.6 times. The amount of OH radicals thus obtained is almost equivalent to that of the decomposed hydrogen peroxide. The decomposition of hydrogen peroxide is an essential reaction to produce additional OH radicals efficiently in the vicinity of GNPs.
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Affiliation(s)
- Yu Okazaki
- Graduate School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Tamon Kusumoto
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Stephane Roux
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Ryoichi Hirayama
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Michel Fromm
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Rana Bazzi
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté F-25030 Besançon Cedex France
| | - Satoshi Kodaira
- National Institutes for Quantum Science and Technology (QST) 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan
| | - Jun Kataoka
- Graduate School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
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Shcherbakov V, Denisov SA, Mostafavi M. A mechanistic study of gold nanoparticles catalysis of O 2 reduction by ascorbate and hydroethidine, investigating reactive oxygen species reactivity. RSC Adv 2023; 13:8557-8563. [PMID: 36936851 PMCID: PMC10015436 DOI: 10.1039/d3ra00443k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/01/2023] [Indexed: 03/17/2023] Open
Abstract
In this work, the mechanism of dioxygen reduction catalysed by gold nanoparticles (AuNPs) by two electron donors was investigated, i.e., by sodium ascorbate and hydroethidine, focusing on potential ROS (reactive oxygen species) formation, such as O2˙- and H2O2. According to our results, when AuNPs catalyse the reduction of O2, ROS are formed only as intermediates on the surface of nanoparticles, and they are unavoidably reduced to water, catalysed by the AuNPs. Thus, the statement on ROS production in the presence of AuNPs often reported in the literature is excessive. The AuNPs can catalyze the oxidation of electron donors in the cell, e.g., antioxidants causing oxidative stress. Therefore we propose that when explaining damage in the living cells observed in the presence of AuNP, the catalysis of redox reactions by AuNPs must be considered.
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Affiliation(s)
| | - Sergey A Denisov
- Institut de Chimie Physique (ICP), CNRS/Université Paris-Saclay 91405 Orsay France
| | - Mehran Mostafavi
- Institut de Chimie Physique (ICP), CNRS/Université Paris-Saclay 91405 Orsay France
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Mechanisms of Nanoscale Radiation Enhancement by Metal Nanoparticles: Role of Low Energy Electrons. Int J Mol Sci 2023; 24:ijms24054697. [PMID: 36902132 PMCID: PMC10003700 DOI: 10.3390/ijms24054697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/20/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
Metal nanoparticles are considered as highly promising radiosensitizers in cancer radiotherapy. Understanding their radiosensitization mechanisms is critical for future clinical applications. This review is focused on the initial energy deposition by short-range Auger electrons; when high energy radiation is absorbed by gold nanoparticles (GNPs) located near vital biomolecules; such as DNA. Auger electrons and the subsequent production of secondary low energy electrons (LEEs) are responsible for most the ensuing chemical damage near such molecules. We highlight recent progress on DNA damage induced by the LEEs produced abundantly within about 100 nanometers from irradiated GNPs; and by those emitted by high energy electrons and X-rays incident on metal surfaces under differing atmospheric environments. LEEs strongly react within cells; mainly via bound breaking processes due to transient anion formation and dissociative electron attachment. The enhancement of damages induced in plasmid DNA by LEEs; with or without the binding of chemotherapeutic drugs; are explained by the fundamental mechanisms of LEE interactions with simple molecules and specific sites on nucleotides. We address the major challenge of metal nanoparticle and GNP radiosensitization; i.e., to deliver the maximum local dose of radiation to the most sensitive target of cancer cells (i.e., DNA). To achieve this goal the emitted electrons from the absorbed high energy radiation must be short range, and produce a large local density of LEEs, and the initial radiation must have the highest possible absorption coefficient compared to that of soft tissue (e.g., 20-80 keV X-rays).
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Patra S, Testard F, Gobeaux F, Sicard L, Shaming D, Caër SL, Thill A. UV-Visible photo-reactivity of permanently polarized inorganic nanotubes coupled to gold nanoparticles. NANOSCALE 2023; 15:4101-4113. [PMID: 36744934 DOI: 10.1039/d2nr05796d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hybrid aluminosilicate nanotubes (Imo-CH3) have the ability to trap small organic molecules inside their hydrophobic internal cavity while being dispersed in water owing to their hydrophilic external surface. They also display a curvature-induced polarization of their wall, which favors reduction outside the nanotubes and oxidation inside. Here, we coupled bare plasmonic gold nanoparticles (GNPs) with Imo-CH3 and analyzed for the first time the redox reactivity of these hybrid nano-reactors upon UV illumination. We show that the coupling between GNPs and Imo-CH3 significantly enhances the nanotube photocatalytic activity, with a large part of water reduction occurring directly on the gold surface. The coupling mechanism strongly influences the initial H2 production rate, which can go from ×10 to more than ×90 as compared to bare Imo-CH3 depending on the synthesis route of the GNPs. The present results show that this hybrid photocatalytic nano-reactor benefits from a synergy of polarization and confinement effects that facilitate efficient H2 production.
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Affiliation(s)
- Sabyasachi Patra
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France.
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400085, India
| | - Fabienne Testard
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France.
| | - Frédéric Gobeaux
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France.
| | - Lorette Sicard
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J.-A. de Baïf, F-75013, Paris, France
| | - Delphine Shaming
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J.-A. de Baïf, F-75013, Paris, France
| | - Sophie Le Caër
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France.
| | - Antoine Thill
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France.
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Monodisperse Gold Nanoparticles: A Review on Synthesis and Their Application in Modern Medicine. Int J Mol Sci 2022; 23:ijms23137400. [PMID: 35806405 PMCID: PMC9266776 DOI: 10.3390/ijms23137400] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/12/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
Gold nanoparticles (AuNPs) are becoming increasingly popular as drug carriers due to their unique properties such as size tenability, multivalency, low toxicity and biocompatibility. AuNPs have physical features that distinguish them from bulk materials, small molecules and other nanoscale particles. Their unique combination of characteristics is just now being fully realized in various biomedical applications. In this review, we focus on the research accomplishments and new opportunities in this field, and we describe the rising developments in the use of monodisperse AuNPs for diagnostic and therapeutic applications. This study addresses the key principles and the most recent published data, focusing on monodisperse AuNP synthesis, surface modifications, and future theranostic applications. Moving forward, we also consider the possible development of functionalized monodisperse AuNPs for theranostic applications based on these efforts. We anticipate that as research advances, flexible AuNPs will become a crucial platform for medical applications.
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