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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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2
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Konishi T, Kusumoto T, Hiroyama Y, Kobayashi A, Mamiya T, Kodaira S. Induction of DNA strand breaks and oxidative base damages in plasmid DNA by ultra-high dose rate proton irradiation. Int J Radiat Biol 2023; 99:1405-1412. [PMID: 36731459 DOI: 10.1080/09553002.2023.2176562] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/30/2022] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
PURPOSE Radiation cancer therapy with ultra-high dose rate (UHDR) exposure, so-called FLASH radiotherapy, appears to reduce normal tissue damage without compromising tumor response to therapy. The aim of this study was to clarify whether a 59.5 MeV proton beam at an UHDR of 48.6 Gy/s could effectively reduce the DNA damage of pBR322 plasmid DNA in solution compared to the conventional dose rate (CONV) of 0.057 Gy/s. MATERIALS AND METHODS A simple system, consisting of pBR322 plasmid DNA in 1× Tris-EDTA buffer, was initially employed for proton beam exposure. We then used formamidopyrimidine-DNA glycosylase (Fpg) enzymes. which convert oxidative base damages of oxidized purines to DNA strand breaks, to quantify DNA single strand breaks (SSBs) and double strand breaks (DSBs) by agarose gel electrophoresis. RESULTS Our findings showed that the SSB induction rate (SSB per plasmid DNA/Gy) at UHDR and the induction of Fpg enzyme sensitive sites (ESS) were significantly reduced in UHDR compared to CONV. However, there was no significant difference in DSB induction and non-DSB cluster damages. CONCLUSIONS UHDR of a 59.5 MeV proton beam could reduce non-clustered, non-DSB damages, such as SSB and sparsely distributed ESS. However, this effect may not be significant in reducing lethal DNA damage that becomes apparent only in acute radiation effects of mammalian cells and in vivo studies.
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Affiliation(s)
- Teruaki Konishi
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
- Graduate School of Health Science, Hirosaki University, Hirosaki City, Japan
- Department of Physics, Rikkyo (St. Paul's) University, Tokyo, Japan
| | - Tamon Kusumoto
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
| | - Yota Hiroyama
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
- Graduate School of Health Science, Hirosaki University, Hirosaki City, Japan
| | - Alisa Kobayashi
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
| | - Taisei Mamiya
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
- Department of Physics, Rikkyo (St. Paul's) University, Tokyo, Japan
| | - Satoshi Kodaira
- Quantum Life and Medical Science Directorate, National Institutes for Quantum Science and Technology, Inageku, Japan
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3
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Kusumoto T, Inaniwa T, Mizushima K, Sato S, Hojo S, Kitamura H, Konishi T, Kodaira S. Radiation Chemical Yields of 7-Hydroxy-Coumarin-3-Carboxylic Acid for Proton- and Carbon-Ion Beams at Ultra-High Dose Rates: Potential Roles in FLASH Effects. Radiat Res 2022; 198:255-262. [PMID: 35738014 DOI: 10.1667/rade-21-00.230.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 06/06/2022] [Indexed: 11/03/2022]
Abstract
It has been observed that healthy tissues are spared at ultra-high dose rate (UHDR: >40 Gy/s), so called FLASH effect. To elucidate the mechanism of FLASH effect, we evaluate changes in radiation chemical yield (G value) of 7-hydroxy-coumarin-3-carboxylic acid (7OH-C3CA), which is formed by the reaction of hydroxyl radicals with coumarin-3-carboxylic acid (C3CA), under carbon ions (140 MeV/u) and protons (27.5 and 55 MeV) in a wide-dose-rate range up to 100 Gy/s. The relative G value, which is the G value at each dose rate normalized by that at the conventional dose (CONV: 0.1 Gy/s >), 140 MeV/u carbon-ion beam is almost equivalent to 27.5 and 55 MeV proton beams. This finding implies that UHDR irradiations using carbon-ion beams have a potential to spare healthy tissues. Furthermore, we evaluate the G value of 7OH-C3CA under the de-oxygenated condition to investigate roles of oxygen to the generation of 7OH-C3CA effect. The G value of 7OH-C3CA under the de-oxygenated condition is lower than that under the oxygenated condition. The G value of 7OH-C3CA under the de-oxygenated condition is higher than those under UHDR irradiations. By direct measurements of the oxygen concentration during 55 MeV proton irradiations, the oxygen concentration drops by 0.1%/Gy, which is independent of the dose rate. When the oxygen concentration directly affects to yields of 7OH-C3CA, the rate of decrease in the oxygen concentration may be correlated with that of decrease in the G value of 7OH-C3CA. However, the reduction rate of G value under UHDR is significantly higher than the oxygen consumption. This finding implied that the influence of the reaction between water radiolysis species formed by neighborhood tracks could be strongly related to the mechanisms of UHDR effect.
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Taku Inaniwa
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Kota Mizushima
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Shinji Sato
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Satoru Hojo
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Hisashi Kitamura
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Teruaki Konishi
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
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4
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Estimation of biological effect of Cu-64 radiopharmaceuticals with Geant4-DNA simulation. Sci Rep 2022; 12:8957. [PMID: 35624130 PMCID: PMC9142517 DOI: 10.1038/s41598-022-13096-2] [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: 08/20/2021] [Accepted: 05/05/2022] [Indexed: 11/24/2022] Open
Abstract
The aim of this work is to estimate the biological effect of targeted radionuclide therapy using Cu-64, which is a well-known Auger electron emitter. To do so, we evaluate the absorbed dose of emitted particles from Cu-64 using the Geant4-DNA Monte Carlo simulation toolkit. The contribution of beta particles to the absorbed dose is higher than that of Auger electrons. The simulation result agrees with experimental ones evaluated using coumarin-3-carboxylic acid chemical dosimeter. The simulation result is also in good agreement with previous ones obtained using fluorescent nuclear track detector. From the results of present simulation (i.e., absorbed dose estimation) and previous biological experiments using two cell lines (i.e., evaluation of survival curves), we have estimated the relative biological effectiveness (RBE) of Cu-64 emitted particles on CHO wild-type cells and xrs5 cells. The RBE of xrs5 cells exposed to Cu-64 is almost equivalent to that with gamma rays and protons and C ions. This result indicates that the radiosensitivity of xrs5 cells is independent of LET. In comparison to this, the RBE on CHO wild-type cells exposed to Cu-64 is significantly higher than gamma rays and almost equivalent to that irradiated with C ions with a linear energy transfer of 70 keV/μm.
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Ohsawa D, Hiroyama Y, Kobayashi A, Kusumoto T, Kitamura H, Hojo S, Kodaira S, Konishi T. DNA strand break induction of aqueous plasmid DNA exposed to 30 MeV protons at ultra-high dose rate. JOURNAL OF RADIATION RESEARCH 2022; 63:255-260. [PMID: 34952540 PMCID: PMC8944314 DOI: 10.1093/jrr/rrab114] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/22/2021] [Indexed: 06/14/2023]
Abstract
Radiation cancer therapy with ultra-high dose rate exposure, so called FLASH radiotherapy, appears to reduce normal tissue damage without compromising tumor response. The aim of this study was to clarify whether FLASH exposure of proton beam would be effective in reducing the DNA strand break induction. We applied a simple model system, pBR322 plasmid DNA in aqueous 1 × TE solution, where DNA single strand breaks (SSBs) and double strand breaks (DSBs) can be precisely quantified by gel electrophoresis. Plasmid DNA were exposed to 27.5 MeV protons in the conventional dose rate of 0.05 Gy/s (CONV) and ultra-high dose rate of 40 Gy/s (FLASH). With both dose rate, the kinetics of the SSB and DSB induction were proportional to absorbed dose. The SSB induction of FLASH was significantly less than CONV, which were 8.79 ± 0.14 (10-3 SSB per Gy per molecule) and 10.8 ± 0.68 (10-3 SSB per Gy per molecule), respectively. The DSB induction of FLASH was also slightly less than CONV, but difference was not significant. Altogether, 27.5 MeV proton beam at 40 Gy/s reduced SSB and not DSB, thus its effect may not be significant in reducing lethal DNA damage that become apparent in acute radiation effect.
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Affiliation(s)
- Daisuke Ohsawa
- Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology; 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Yota Hiroyama
- Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology; 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
- Graduate School of Health Sciences, Hirosaki University, 66-1 Hommachi, Hirosaki-shi, Aomori, 036-8564, Japan
| | - Alisa Kobayashi
- Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology; 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
- Electrostatic Accelerator Operation Section, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Tamon Kusumoto
- Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology; 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
- Radiation Measurement Research Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Hisashi Kitamura
- Radiation Measurement Research Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Satoru Hojo
- Cyclotron Operation Section, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Satoshi Kodaira
- Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology; 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
- Radiation Measurement Research Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555, Japan
| | - Teruaki Konishi
- Corresponding author. Single Cell Radiation Biology Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inageku, Chiba, 263-8555 Japan, ; Tel.: +81-43-206-4695
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6
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Precek M, Kubelik P, Vysin L, Schmidhammer U, Larbre JP, Demarque A, Jeunesse P, Mostafavi M, Juha L. Dose Rate Effects in Fluorescence Chemical Dosimeters Exposed to Picosecond Electron Pulses: An Accurate Measurement of Low Doses at High Dose Rates. Radiat Res 2022; 197:131-148. [PMID: 34614193 DOI: 10.1667/rade-20-00292.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 09/07/2021] [Indexed: 11/03/2022]
Abstract
The development of ultra-intense electron pulse for applications needs to be accompanied by the implementation of a practical dosimetry system. In this study four different systems were investigated as dosimeters for low doses with a very high-dose-rate source. First, the effects of ultra-short pulses were investigated for the yields of the Fricke dosimeter based on acidic solutions of ferrous sulfate; it was established that the yields were not significantly affected by the high dose rates, so the Fricke dosimeter system was used as a reference. Then, aqueous solutions of three compounds as fluorescence chemical dosimeters were utilized, each operated at a different solution pH: terephthalic acid - basic, trimesic acid - acidic, and coumarin-3-carboxylic acid (C3CA) - neutral. Fluorescence chemical dosimeters offer an attractive alternative to chemical dosimeters based on optical absorption for measuring biologically relevant low doses because of their higher sensitivity. The effects of very intense dose rate (TGy/ s) from pulses of fast electrons generated by a picosecond linear accelerator on the chemical yields of fluorescence chemical dosimeters were investigated at low peak doses (<20 Gy) and compared with yields determined under low-dose-rate irradiation from a 60 Co gamma-ray source (mGy/s). For the terephthalate and the trimesic acid dosimeters changes in the yields were not detected within the estimated (∼10%) precision of the experiments, but, due to the complexity of the mechanism of the hydroxyl radical initiated reactions in solutions of the relevant aromatic compounds, significant reductions of the chemical yield (-60%) were observed when the C3CA dosimeter was irradiated with the ultra-short pulses.
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Affiliation(s)
- Martin Precek
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic
- Department of Radiation and Chemical Physics, Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague, Czech Republic
| | - Petr Kubelik
- Department of Radiation and Chemical Physics, Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague, Czech Republic
- Department of Spectroscopy, J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Ludek Vysin
- Department of Radiation and Chemical Physics, Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague, Czech Republic
| | - Uli Schmidhammer
- Institut de Chimie Physique/ELYSE, CNRS UMR 8000, Université Paris-Saclay, 91400 Orsay, France
| | - Jean-Philippe Larbre
- Institut de Chimie Physique/ELYSE, CNRS UMR 8000, Université Paris-Saclay, 91400 Orsay, France
| | - Alexandre Demarque
- Institut de Chimie Physique/ELYSE, CNRS UMR 8000, Université Paris-Saclay, 91400 Orsay, France
| | - Pierre Jeunesse
- Institut de Chimie Physique/ELYSE, CNRS UMR 8000, Université Paris-Saclay, 91400 Orsay, France
| | - Mehran Mostafavi
- Institut de Chimie Physique/ELYSE, CNRS UMR 8000, Université Paris-Saclay, 91400 Orsay, France
| | - Libor Juha
- Department of Radiation and Chemical Physics, Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 18221 Prague, Czech Republic
- Laser Plasma Department, Institute of Plasma Physics, Czech Academy of Sciences, Za Slovankou 1782/3, 18200 Prague, Czech Republic
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7
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Smith M, Pimblott SM, LaVerne JA. Hydroxyl radical yields in the heavy ion radiolysis of water. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Quantitative estimation of track segment yields of water radiolysis species under heavy ions around Bragg peak energies using Geant4-DNA. Sci Rep 2021; 11:1524. [PMID: 33452450 PMCID: PMC7810756 DOI: 10.1038/s41598-021-81215-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/05/2021] [Indexed: 11/08/2022] Open
Abstract
We evaluate the track segment yield G' of typical water radiolysis products (eaq-, ·OH and H2O2) under heavy ions (He, C and Fe ions) using a Monte Carlo simulation code in the Geant4-DNA. Furthermore, we reproduce experimental results of ·OH of He and C ions around the Bragg peak energies (< 6 MeV/u). In the relatively high energy region (e.g., > 10 MeV/u), the simulation results using Geant4-DNA have agreed with experimental results. However, the G-values of water radiolysis species have not been properly evaluated around the Bragg peak energies, at which high ionizing density can be expected. Around the Bragg peak energy, dense continuous secondary products are generated, so that it is necessary to simulate the radical-radical reaction more accurately. To do so, we added the role of secondary products formed by irradiation. Consequently, our simulation results are in good agreement with experimental results and previous simulations not only in the high-energy region but also around the Bragg peak. Several future issues are also discussed regarding the roles of fragmentation and multi-ionization to realize more realistic simulations.
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9
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Kusumoto T, Ogawara R, Igawa K, Baba K, Konishi T, Furusawa Y, Kodaira S. Scaling parameter of the lethal effect of mammalian cells based on radiation-induced OH radicals: effectiveness of direct action in radiation therapy. JOURNAL OF RADIATION RESEARCH 2021; 62:86-93. [PMID: 33313873 PMCID: PMC7779345 DOI: 10.1093/jrr/rraa111] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/06/2020] [Indexed: 06/12/2023]
Abstract
We have been studying the effectiveness of direct action, which induces clustered DNA damage leading to cell killing, relative to indirect action. Here a new criterion Direct Ation-Based Biological Effectiveness (DABBLE) is proposed to understand the contribution of direct action for cell killing induced by C ions. DABBLE is defined as the ratio of direct action to indirect action. To derive this ratio, we describe survival curves of mammalian cells as a function of the number of OH radicals produced 1 ps and 100 ns after irradiation, instead of the absorbed dose. By comparing values on the vertical axis of the survival curves at a certain number of OH radicals produced, we successfully discriminate the contribution of direct action induced by C ions from that of indirect action. DABBLE increases monotonically with increasing linear energy transfer (LET) up to 140 keV/μm and then drops, when the survival curves are described by the number of OH radicals 1 ps after irradiation. The trend of DABBLE is in agreement with that of relative biological effectiveness (RBE) of indirect action. In comparison, the value of DABBLE increases monotonically with LET, when the survival curves are described by the number of OH radicals 100 ns after irradiation. This finding implies that the effectiveness of C ion therapy for cancer depends on the contribution of direct action and we can follow the contribution of direct action over time in the chemical phase.
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Ryo Ogawara
- Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Kazuyo Igawa
- Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata, Kita-ku, 700-8558 Okayama, Japan
| | - Kentaro Baba
- Graduate School of Biomedical Science and Engineering, Hokkaido University, Kita-12 Nishi-5, Kita-ku, 080-0808 Hokkaido, Japan
| | - Teruaki Konishi
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Yoshiya Furusawa
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
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10
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Kusumoto T, Kitamura H, Hojo S, Konishi T, Kodaira S. Significant changes in yields of 7-hydroxy-coumarin-3-carboxylic acid produced under FLASH radiotherapy conditions. RSC Adv 2020; 10:38709-38714. [PMID: 35517542 PMCID: PMC9057355 DOI: 10.1039/d0ra07999e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 09/27/2020] [Indexed: 12/15/2022] Open
Abstract
FLASH radiotherapy appears to kill off tumor cells while sparing healthy tissues, by irradiation at ultra high dose rate (>40 Gy s−1). The present study aims to clarify the mechanism of the sparing effect by proton irradiation under the FLASH conditions from a viewpoint of radiation chemistry. To do so, we evaluate radiation chemical yields (G values) of 7-hydroxy-coumarin-3-carboxylic acid (7OH–C3CA), which is produced by water radiolysis using coumarin-3-carboxylic acid (C3CA) solution as a radical scavenger of hydroxyl radicals. We shoot 27.5 MeV protons in the dose rate ranging from 0.05 to 160 Gy s−1. The recombination process of hydroxyl radicals produced is followed by varying the concentration of C3CA from 0.2 to 20 mM, which corresponds to the scavenging time scale from 7.1 to 714 ns. The G value of 7OH–C3CA produced decreases with increasing dose rate on the same scavenging time scale. Additionally, the trend of the relative G value normalized at a scavenging time scale of 100 ns, where radical–radical reaction subsides, is consistent in the examined dose rate range. This finding implies that G values of 7OH–C3CA produced reduce with increasing dose rate due to the oxygen depletion. We experimentally present that the sparing effect for healthy tissues would be seen even with a proton beam under the FLASH conditions due to the depletion of oxygen. Yield of 7-hydroxy-coumarin-3-carboxylic acid (7OH–C3CA) significantly decreases at FLASH condition with the dose rate of >40 Gy s−1, compared to that at conventional condition of 0.05 Gy s−1, due to the oxygen depletion in the solution.![]()
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Hisashi Kitamura
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Satoru Hojo
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Teruaki Konishi
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology 4-9-1 Anagawa, Inage-ku 263-8555 Chiba Japan
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11
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Water radiolysis with thermal neutrons, fast neutrons and contamination γ rays in the accelerator based thermal neutron field: Time dependence of hydroxyl radical yields. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108978] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Discrimination of hydroxyl radical yields due to thermal neutrons, fast neutrons, and gamma rays in accelerator-based neutron fields. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108889] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Náfrádi M, Farkas L, Alapi T, Hernádi K, Kovács K, Wojnárovits L, Takács E. Application of coumarin and coumarin-3-carboxylic acid for the determination of hydroxyl radicals during different advanced oxidation processes. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Huart L, Nicolas C, Kaddissy JA, Guigner JM, Touati A, Politis MF, Mercere P, Gervais B, Renault JP, Hervé du Penhoat MA. Soft X-ray Radiation and Monte Carlo Simulations: Good Tools to Describe the Radiation Chemistry of Sub-keV Electrons. J Phys Chem A 2020; 124:1896-1902. [PMID: 32118425 DOI: 10.1021/acs.jpca.9b10539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The description of the biological effects of ionizing radiation requires a good knowledge of the dose deposition processes at both the cellular and molecular scales. However, experimental studies on the energy deposition specificity of sub-keV electrons, produced by most radiations, including high-energy photons and heavy ions, are scarce. Soft X-rays (0.2-2 keV) are here used to probe the physical and physico-chemical events occurring upon exposure of liquid water to sub-keV electrons. Liquid water samples were irradiated with a monochromatic photon beam at the SOLEIL synchrotron. Hydroxyl radical quantification was conducted through HO• scavenging using benzoate to form fluorescent hydroxybenzoate. The yields of HO• radicals exhibit a minimum around 1.5 keV, in good agreement with indirect observation. Moreover, they are relatively independent of the benzoate concentration in the range investigated, which corresponds to scavenging times of 170 ns to 170 ps. These results provide evidence that sub-keV electrons behave as high linear energy transfer particles, since they are able to deposit tens to hundreds of electronvolts in nanometric volumes.
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Affiliation(s)
- Lucie Huart
- IMPMC, Sorbonne Université, UMR CNRS 7590, MNHN, Paris 75252, France.,Synchrotron SOLEIL, Saint Aubin 91190, France.,Université Paris-Saclay, CEA, CNRS, NIMBE, Gif-sur-Yvette 91191, France
| | | | | | | | - Alain Touati
- IMPMC, Sorbonne Université, UMR CNRS 7590, MNHN, Paris 75252, France
| | - Marie-Françoise Politis
- LAMBE UMR 8587, Université d'Evry val d'Essonne, CNRS, CEA, Université Paris-Saclay, Evry 91025, France
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Baldacchino G, Brun E, Denden I, Bouhadoun S, Roux R, Khodja H, Sicard-Roselli C. Importance of radiolytic reactions during high-LET irradiation modalities: LET effect, role of O2 and radiosensitization by nanoparticles. Cancer Nanotechnol 2019. [DOI: 10.1186/s12645-019-0047-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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16
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Kusumoto T, Ogawara R. Radiation Chemical Yield of Hydroxyl Radicals for Accelerator-based Boron Neutron Capture Therapy: Dose Assessment of 10B(n,α) 7Li Reaction Using Coumarin-3-Carboxilic Solution. Radiat Res 2019; 191:460-465. [PMID: 30896280 DOI: 10.1667/rr15318.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Evaluation of the characteristics of accelerator-based thermal neutron fields is recognized as an important issue when discussing the effectiveness of boron neutron capture therapy (BNCT). In this study, we propose that the radiation chemical yield (G value) of hydroxyl radicals (Goh•) can be considered a universal parameter for the description of the accelerator-based thermal neutron field. The Goh• of the 10B(n,α)7Li reaction was quantitatively evaluated using an aqueous coumarin-3-carboxylic acid (3CCA) solution, and was discriminated from that of contaminations (i.e., γ rays and fast neutrons). The Goh• of the 10B(n,α)7Li reaction was 0.107 ± 0.004 OH•/100 eV, which is almost equivalent to that exposed to α particles with an energy of 6.0 MeV. Since the Goh• of γ rays from a 60Co source is 2.03 ± 0.05 OH•/100 eV, this lower value suggests that indirect action by the 10B(n,α)7Li reaction is not dominant in BNCT. However, our results indicate that one can assess the 60Co equivalent dose of the 10B(n,α)7Li reaction in water from the Goh• derived using aqueous 3CCA solution in the accelerator-based thermal neutron field.
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Affiliation(s)
- Tamon Kusumoto
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Ryo Ogawara
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
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17
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Peukert D, Incerti S, Kempson I, Douglass M, Karamitros M, Baldacchino G, Bezak E. Validation and investigation of reactive species yields of Geant4-DNA chemistry models. Med Phys 2018; 46:983-998. [PMID: 30536689 DOI: 10.1002/mp.13332] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/22/2018] [Accepted: 12/02/2018] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Indirect biological damage due to reactive species produced in water radiolysis reactions is responsible for the majority of biological effect for low linear energy transfer (LET) radiation. Modeling water radiolysis and the subsequent interactions of reactive species, as well as track structures, is essential to model radiobiology on the microscale. Recently, chemistry models have been developed for Geant4-DNA to be used in combination with the comprehensive existing physics models. In the current work, the first detailed, independent, in silico validation of all species yields with published experimental observations and comparison with other radiobiological simulations is presented. Additionally, the effect of LET of protons and heavier ions on reactive species yield in the model was examined, as well as the completeness of the chemical reactions following the radiolysis within the time after physical interactions simulated in the model. METHODS Yields over time of reactive species were simulated for water radiolysis by incident electrons, protons, alpha particles, and ions with various LETs using Geant4 and RITRACKS simulation tools. Water dissociation and recombination was simulated using Geant4 to determine the completeness of chemical reactions at the end of the simulation. Yield validation was performed by comparing yields simulated using Geant4 with experimental observations and other simulations. Validation was performed for all species for low LET radiation and the solvated electron and hydroxyl radical for high LET ions. RESULTS It was found that the Geant4-DNA chemistry yields were generally in good agreement with experimental observations and other simulations. However, the Geant4-DNA yields for the hydroxyl radical and hydrogen peroxide at the end of the chemistry stage were found to be respectively considerably higher and lower than the experimentally observed yields. Increasing the LET of incident hadrons increased the yield of secondary species and decreased the yield of primary species. The effect of LET on the yield of the hydroxyl radical at 100 ns simulated with Geant4 was in good agreement with experimental measurements. Additionally, by the end of the simulation only 40% of dissociated water molecules had been recombined and the rate of recombination was slowing. CONCLUSIONS The yields simulated using Geant4 are within reasonable agreement with experimental observations. Higher LET radiation corresponds with increased yields of secondary species and decreased yields of primary species. These trends combined with the LET having similar effects on the 100 ns hydroxyl radical yield for Geant4 and experimental measurements indicate that Geant4 accurately models the effect of LET on radiolysis yields. The limited recombination within the modeled chemistry stage and the slowing rate of recombination at the end of the stage indicate potential long-range indirect biological damage.
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Affiliation(s)
- Dylan Peukert
- Future Industries Institute, University of South Australia, Adelaide, SA, Australia.,Division of ITEE, University of South Australia, Adelaide, SA, Australia
| | - Sebastien Incerti
- Univ. Bordeaux, CENBG, UMR 5797, Gradignan, F-33170, France.,CNRS, IN2P3, CENBG, UMR 5797, Gradignan, F-33170, France
| | - Ivan Kempson
- Future Industries Institute, University of South Australia, Adelaide, SA, Australia
| | - Michael Douglass
- Department of Medical Physics, Royal Adelaide Hospital, Adelaide, SA, Australia.,Department of Physics, University of Adelaide, Adelaide, SA, Australia
| | - Mathieu Karamitros
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Gérard Baldacchino
- LIDYL, UMR 9222, CEA-CNRS-Université Paris-Saclay, CEA Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Eva Bezak
- Department of Physics, University of Adelaide, Adelaide, SA, Australia.,Cancer Research Institute and School of Health Sciences, University of South Australia, Adelaide, SA, Australia
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18
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Kobayashi A, Konishi T. Radiation quality effects alteration in COX-2 pathway to trigger radiation-induced bystander response in A549 lung carcinoma cells. JOURNAL OF RADIATION RESEARCH 2018; 59:754-759. [PMID: 30124879 PMCID: PMC6251420 DOI: 10.1093/jrr/rry065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 06/12/2018] [Indexed: 06/08/2023]
Abstract
This study aimed to determine whether the radiation-induced bystander effect (RIBE) is affected by radiation quality. To mimic the different radiation qualities of the direct action (D)/indirect action (ID) ratio, A549 cells were exposed to X-rays, with either 100 mM of the radical scavenger, thio-urea (TU+), or null (TU-). Biological responses in irradiated and bystander cells were compared at equal lethal effects of a 6% survival dose, which was estimated from the survival curves to be 8 Gy and 5 Gy for TU+ and TU-, respectively. Cyclooxygenase-2 (COX-2) expression in TU- irradiated cells increased up to 8 h post-irradiation, before decreasing towards 24 h. The concentration of prostaglandin E2 (PGE2), a primary product of COX-2 and known as a secreted inducible factor in RIBE, increased over 3-fold compared with that in the control at 8 h post-irradiation. Conversely, COX-2 expression and PGE2 production of TU+ irradiated cells were drastically suppressed. These results show that the larger D/ID suppressed COX-2 expression and PGE2 production in irradiated cells. However, in contrast to the case in the irradiated cells, COX-2 expression was equally observed in the TU- and TU+ co-cultured bystander cells, which showed the highest expression levels at 24 h post-irradiation. Taken together, these findings demonstrate that radiation quality, such as the D/ID ratio, may be an important factor in the alteration of signalling pathways involved in RIBE.
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Affiliation(s)
- Alisa Kobayashi
- SPICE-BIO research core, International Open Laboratory, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inageku, Chiba, Japan
- Department of Accelerator and Medical Physics, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inageku, Chiba, Japan
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki, Japan
| | - Teruaki Konishi
- SPICE-BIO research core, International Open Laboratory, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inageku, Chiba, Japan
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inageku, Chiba, Japan
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19
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Maeyama T, Hase S. Nanoclay gel-based radio-fluorogenic gel dosimeters using various fluorescence probes. Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2018.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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20
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Kimura A, Matsufuji N, Hiroki A, Seito H, Taguchi M. Development of high-sensitivity intra-corporeal catheter-type liquid dosimeter for radiotherapy. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aad395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Nakanishi I, Yamashita S, Shimokawa T, Kamibayashi M, Sekine-Suzuki E, Ueno M, Ogawa Y, Ozawa T, Matsumoto KI. Analysis of redox states of protic and aprotic solutions irradiated by low linear energy transfer carbon-ion beams using a 2,2-diphenyl-1-picrylhydrazyl radical. Org Biomol Chem 2018; 16:1272-1276. [DOI: 10.1039/c7ob02904g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The redox states of protic and aprotic solutions were evaluated after carbon-ion irradiation.
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Affiliation(s)
- Ikuo Nakanishi
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Shinichi Yamashita
- Nuclear Professional School
- School of Engineering
- The University of Tokyo
- Ibaraki 318-1188
- Japan
| | - Takashi Shimokawa
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Masato Kamibayashi
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Emiko Sekine-Suzuki
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Megumi Ueno
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Yukihiro Ogawa
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
| | - Toshihiko Ozawa
- Division of Oxidative Stress Research
- Showa Pharmaceutical University
- Machida
- Japan
| | - Ken-ichiro Matsumoto
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Chiba 263-8555
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22
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Measuring the photon depth dose distribution produced by a medical linear accelerator in a water-equivalent radio-fluorogenic gel. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-015-4563-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Omichi M, Marui H, Padalkar VS, Horio A, Tsukuda S, Sugimoto M, Seki S. Fabrication of Thermoresponsive Nanoactinia Tentacles by a Single Particle Nanofabrication Technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11692-11700. [PMID: 26442713 DOI: 10.1021/acs.langmuir.5b02962] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanowires that are retractable by external stimulus are the key to fabrication of nanomachines that mimick actinia tentacles in nature. A single particle nanofabrication technique (SPNT) was applied over a large area to the fabrication of retractable nanowires (nanoactinia tentacles) composed of poly(N-isopropylacrylamide) (PNIPAM) and poly(vinylpyrrolidone) (PVP), which are thermoresponsive and hydrophilic polymers. The nanowires were transformed with increasing temperature from rod-like- to globule-forms with gyration radii of ∼1.5 and ∼0.7 μm, respectively. The transformation of the nanowires was reversible and reproducible under repeated cycles of heating and cooling. The reversible transformation was driven by hydration and dehydration of PNIPAM, the thermoresponsive segments, resulting in coil-to-globule transformation of the segments. The nanoactinia tentacle systems trapped the nanoparticles as a model of living cells under thermal stimulation, and the trapping was controlled by temperature. We present herein a unique nanomachine system which can be applicable to nanoparticle filtering/sensing systems and expandable to large-area functionalization and demonstrate polymer-based nanoactuators via scaling of molecular level coil-to-globule transformation into micron-sizes.
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Affiliation(s)
- Masaaki Omichi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita 565-0871, Japan
- Center for Collaborative Research, Anan National College of Technology , 265 Aoki Minobayashi, Anan, Tokushima 774-0017, Japan
| | - Hiromi Marui
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita 565-0871, Japan
| | - Vikas S Padalkar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Akifumi Horio
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita 565-0871, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Satoshi Tsukuda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Masaki Sugimoto
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute , 1233 Watanuki-machi Takasaki, Gunma 370-1292, Japan
| | - Shu Seki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita 565-0871, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto, 615-8510, Japan
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Pachnerová Brabcová K, Štěpán V, Karamitros M, Karabín M, Dostálek P, Incerti S, Davídková M, Sihver L. Contribution of indirect effects to clustered damage in DNA irradiated with protons. RADIATION PROTECTION DOSIMETRY 2015; 166:44-48. [PMID: 25897140 DOI: 10.1093/rpd/ncv159] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Protons are the dominant particles both in galactic cosmic rays and in solar particle events and, furthermore, proton irradiation becomes increasingly used in tumour treatment. It is believed that complex DNA damage is the determining factor for the consequent cellular response to radiation. DNA plasmid pBR322 was irradiated at U120-M cyclotron with 30 MeV protons and treated with two Escherichia coli base excision repair enzymes. The yields of SSBs and DSBs were analysed using agarose gel electrophoresis. DNA has been irradiated in the presence of hydroxyl radical scavenger (coumarin-3-carboxylic acid) in order to distinguish between direct and indirect damage of the biological target. Pure scavenger solution was used as a probe for measurement of induced OH· radical yields. Experimental OH· radical yield kinetics was compared with predictions computed by two theoretical models-RADAMOL and Geant4-DNA. Both approaches use Geant4-DNA for description of physical stages of radiation action, and then each of them applies a distinct model for description of the pre-chemical and chemical stage.
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Affiliation(s)
- K Pachnerová Brabcová
- Department of Applied Physics, Chalmers University of Technology, Fysikgränd 3, Göteborg SE-412 96, Sweden Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - V Štěpán
- Université de Bordeaux, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, 33175 Gradignan, France Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - M Karamitros
- Université de Bordeaux, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, 33175 Gradignan, France
| | - M Karabín
- Department of Biotechnology, Institute of Chemical Technology Prague, Technická 5, Prague 166 28, Czech Republic
| | - P Dostálek
- Department of Biotechnology, Institute of Chemical Technology Prague, Technická 5, Prague 166 28, Czech Republic
| | - S Incerti
- Université de Bordeaux, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, 33175 Gradignan, France
| | - M Davídková
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - L Sihver
- Department of Applied Physics, Chalmers University of Technology, Fysikgränd 3, Göteborg SE-412 96, Sweden Atominstitut, TU Wien, Stadionallee 2, 1020 Vienna, Austria
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Liu Y, Liu X, Jin X, He P, Zheng X, Dai Z, Ye F, Zhao T, Chen W, Li Q. The dependence of radiation enhancement effect on the concentration of gold nanoparticles exposed to low- and high-LET radiations. Phys Med 2015; 31:210-8. [DOI: 10.1016/j.ejmp.2015.01.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 01/14/2015] [Accepted: 01/16/2015] [Indexed: 01/12/2023] Open
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26
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Balcerzyk A, Boughattas I, Pin S, Balanzat E, Baldacchino G. First observation of HO˙ reactivity in water under high energy ions at elevated temperature. Phys Chem Chem Phys 2014; 16:23975-84. [PMID: 25286140 DOI: 10.1039/c4cp03049d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This communication reports the first observation of the formation of HO˙ produced under two different High energy ion beams, (18)O(8+) and (36)Ar(18+) having Linear Energy Transfers (LET) of 65 and 350 eV nm(-1) respectively, at temperatures up to 411 K. Both scavenging with various concentrations of SCN(-) and heavy-ion pulse radiolysis methods are used with an original temperature and pressure regulated optical cell. Deconvolution of kinetics is used to analyze the evolution of HO˙ track segment yields as a function of time and temperature. It takes care of involving the ionic strength effect and Arrhenius expression in the rate constants correction. The results show a fast decay of HO˙ yields in the 10(-10)-10(-8) s range which denotes an efficient reactivity of this species in the track structure of the ion beam. This effect is enhanced with the lowest LET of O(8+). Increasing the temperature also accelerates the decays for both ions. These observations are discussed in terms of temperature activation of reactions and the track structure exhibiting the formation of HO˙ in a "low LET" penumbra around the ionization tracks. HO˙ track segment yields at 100 ns, of 0.4 × 10(-7) and 0.6 × 10(-7) mol J(-1), respectively for 350 and 65 eV nm(-1), are not affected by temperature.
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Affiliation(s)
- A Balcerzyk
- CEA Saclay, IRAMIS, SIS2M, LRad, Bât 546, PC 175, F-91191 Gif-sur-Yvette Cedex, France.
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Pachnerová Brabcová K, Sihver L, Yasuda N, Matuo Y, Stěpán V, Davídková M. Clustered DNA damage on subcellular level: effect of scavengers. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2014; 53:705-712. [PMID: 25034012 DOI: 10.1007/s00411-014-0557-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
Clustered DNA damages are induced by ionizing radiation, particularly of high linear energy transfer (LET). Compared to isolated DNA damage sites, their biological effects can be more severe. We investigated a clustered DNA damage induced by high LET radiation (C 290 MeV u(-1) and Fe 500 MeV u(-1)) in pBR322 plasmid DNA. The plasmid is dissolved in pure water or in aqueous solution of one of the three scavengers (coumarin-3-carboxylic acid, dimethylsulfoxide, and glycylglycine). The yield of double strand breaks (DSB) induced in the DNA plasmid-scavenger system by heavy ion radiation was found to decrease with increasing scavenging capacity due to reaction with hydroxyl radical, linearly with high correlation coefficients. The yield of non-DSB clusters was found to occur twice as much as the DSB. Their decrease with increasing scavenging capacity had lower linear correlation coefficients. This indicates that the yield of non-DSB clusters depends on more factors, which are likely connected to the chemical properties of individual scavengers.
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28
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Palmans H, Rabus H, Belchior AL, Bug MU, Galer S, Giesen U, Gonon G, Gruel G, Hilgers G, Moro D, Nettelbeck H, Pinto M, Pola A, Pszona S, Schettino G, Sharpe PHG, Teles P, Villagrasa C, Wilkens JJ. Future development of biologically relevant dosimetry. Br J Radiol 2014; 88:20140392. [PMID: 25257709 DOI: 10.1259/bjr.20140392] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Proton and ion beams are radiotherapy modalities of increasing importance and interest. Because of the different biological dose response of these radiations as compared with high-energy photon beams, the current approach of treatment prescription is based on the product of the absorbed dose to water and a biological weighting factor, but this is found to be insufficient for providing a generic method to quantify the biological outcome of radiation. It is therefore suggested to define new dosimetric quantities that allow a transparent separation of the physical processes from the biological ones. Given the complexity of the initiation and occurrence of biological processes on various time and length scales, and given that neither microdosimetry nor nanodosimetry on their own can fully describe the biological effects as a function of the distribution of energy deposition or ionization, a multiscale approach is needed to lay the foundation for the aforementioned new physical quantities relating track structure to relative biological effectiveness in proton and ion beam therapy. This article reviews the state-of-the-art microdosimetry, nanodosimetry, track structure simulations, quantification of reactive species, reference radiobiological data, cross-section data and multiscale models of biological response in the context of realizing the new quantities. It also introduces the European metrology project, Biologically Weighted Quantities in Radiotherapy, which aims to investigate the feasibility of establishing a multiscale model as the basis of the new quantities. A tentative generic expression of how the weighting of physical quantities at different length scales could be carried out is presented.
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Affiliation(s)
- H Palmans
- 1 Acoustics and Ionising Radiation Division, National Physical Laboratory (NPL), Teddington, Middlesex, UK
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Yamashita S, Baldacchino G, Maeyama T, Taguchi M, Muroya Y, Lin M, Kimura A, Murakami T, Katsumura Y. Mechanism of radiation-induced reactions in aqueous solution of coumarin-3-carboxylic acid: Effects of concentration, gas and additive on fluorescent product yield. Free Radic Res 2012; 46:861-71. [DOI: 10.3109/10715762.2012.684879] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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30
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Abstract
The hydroxyl radical is the primary mediator of DNA damage by the indirect effect of ionizing radiation. It is a powerful oxidizing agent produced by the radiolysis of water and is responsible for a significant fraction of the DNA damage associated with ionizing radiation. There is therefore an interest in the development of sensitive assays for its detection. The hydroxylation of aromatic groups to produce fluorescent products has been used for this purpose. We have examined four different chromophores which produce fluorescent products when hydroxylated. Of these, the coumarin system suffers from the fewest disadvantages. We have therefore examined its behavior when linked to a cationic peptide ligand designed to bind strongly to DNA.
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Affiliation(s)
- Vicky J Tang
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0610
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31
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Maeyama T, Yamashita S, Taguchi M, Baldacchino G, Sihver L, Murakami T, Katsumura Y. Production of a fluorescence probe in ion-beam radiolysis of aqueous coumarin-3-carboxylic acid solution—2: Effects of nuclear fragmentation and its simulation with PHITS. Radiat Phys Chem Oxf Engl 1993 2011. [DOI: 10.1016/j.radphyschem.2011.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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32
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Perry CC, Tang VJ, Konigsfeld KM, Aguilera JA, Milligan JR. Use of a Coumarin-Labeled Hexa-Arginine Peptide as a Fluorescent Hydroxyl Radical Probe in a Nanoparticulate Plasmid DNA Condensate. J Phys Chem B 2011; 115:9889-97. [DOI: 10.1021/jp205198b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher C. Perry
- Department of Biochemistry, Mortensen Hall, Loma Linda University, 11085 Campus Street, Loma Linda, California 92350, United States
| | - Vicky J. Tang
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093-0610, United States
| | - Katie M. Konigsfeld
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093-0610, United States
| | - Joseph A. Aguilera
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093-0610, United States
| | - Jamie R. Milligan
- Department of Radiology, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093-0610, United States
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