1
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Nojima H, Kaida A, Matsuya Y, Uo M, Yoshimura RI, Arazi L, Miura M. DNA damage response in a 2D-culture model by diffusing alpha-emitters radiation therapy (Alpha-DaRT). Sci Rep 2024; 14:11468. [PMID: 38769339 PMCID: PMC11106084 DOI: 10.1038/s41598-024-62071-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 05/13/2024] [Indexed: 05/22/2024] Open
Abstract
Diffusing alpha-emitters radiation therapy (Alpha-DaRT) is a unique method, in which interstitial sources carrying 224Ra release a chain of short-lived daughter atoms from their surface. Although DNA damage response (DDR) is crucial to inducing cell death after irradiation, how the DDR occurs during Alpha-DaRT treatment has not yet been explored. In this study, we temporo-spatially characterized DDR such as kinetics of DNA double-strand breaks (DSBs) and cell cycle, in two-dimensional (2D) culture conditions qualitatively mimicking Alpha-DaRT treatments, by employing HeLa cells expressing the Fucci cell cycle-visualizing system. The distribution of the alpha-particle pits detected by a plastic nuclear track detector, CR-39, strongly correlated with γH2AX staining, a marker of DSBs, around the 224Ra source, but the area of G2 arrested cells was more widely spread 24 h from the start of the exposure. Thereafter, close time-lapse observation revealed varying cell cycle kinetics, depending on the distance from the source. A medium containing daughter nuclides prepared from 224Ra sources allowed us to estimate the radiation dose after 24 h of exposure, and determine surviving fractions. The present experimental model revealed for the first time temporo-spatial information of DDR occurring around the source in its early stages.
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Affiliation(s)
- Hitomi Nojima
- Department of Dental Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Atsushi Kaida
- Department of Dental Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yusuke Matsuya
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Ibaraki, 319-1195, Japan
- Faculty of Health Sciences, Hokkaido University, Kita-12 Nishi-5, Kita-ku, Sapporo, Hokkaido, 060-0812, Japan
| | - Motohiro Uo
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Ryo-Ichi Yoshimura
- Department of Radiation Therapeutics and Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Lior Arazi
- Unit of Nuclear Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev, P.O.B. 653, 8410501, Be'er-Sheva, Israel
| | - Masahiko Miura
- Department of Dental Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
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2
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Yamamoto S, Yoshino M, Nakanishi K, Yogo K, Kamada K, Yoshikawa A, Kataoka J. A comparative study of EM-CCD and CMOS cameras for particle ion trajectory imaging. Appl Radiat Isot 2024; 204:111143. [PMID: 38101006 DOI: 10.1016/j.apradiso.2023.111143] [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: 08/30/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
High-resolution and real-time imaging of particle ion trajectories is essential in nuclear medicine and nuclear engineering. One potential method to achieve high-resolution real-time trajectory imaging of particle ions involves utilizing an imaging system that integrates a scintillator plate with a magnifying unit and a cooled electron multiplying charge-coupled device (EM-CCD) camera. However, acquiring an EM-CCD camera might prove challenging due to the discontinuation of CCD sensor manufacturing by vendors. As an alternative imaging approach, a low-noise, high-sensitivity camera utilizing a cooled complementary metal-oxide-semiconductor (CMOS) sensor offers a promising solution for imaging particle ion trajectories. Yet, it remains uncertain whether CMOS-based cameras can perform as effectively as CCD-based cameras in capturing particle ion trajectories. To address these concerns, we conducted a comparative analysis of the imaging performance between a CMOS-based system and an EM-CCD-based system for capturing alpha particle trajectories. The results revealed that both systems could image the trajectories of alpha particle, but the spatial resolution with the CMOS-based camera exceeded that of the EM-CCD-based camera, primarily due to the smaller pixel size of the sensor. While the signal-to-noise ratio (SNR) of the trajectory image from the CMOS-based camera initially lagged behind that from the EM-CCD-based camera, this disparity was mitigated by implementing binning techniques on the CMOS-based camera images. In conclusion, our findings suggest that a cooled CMOS camera could serve as a viable alternative for imaging particle ion trajectories.
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Affiliation(s)
| | - Masao Yoshino
- New Industry Creation Hatchery Center, Tohoku University, Japan
| | | | | | - Kei Kamada
- New Industry Creation Hatchery Center, Tohoku University, Japan
| | - Akira Yoshikawa
- New Industry Creation Hatchery Center, Tohoku University, Japan
| | - Jun Kataoka
- Faculty of Science and Engineering, Waseda University, Japan
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3
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Kusumoto T, Fromm M, Cloutier P, Bass AD, Sanche L, Kodaira S. Revealing the mechanism of damage to the carbonate ester in PADC polymeric nuclear track detector using low-energy electron stimulated desorption. Phys Chem Chem Phys 2023; 25:30412-30418. [PMID: 37916504 DOI: 10.1039/d3cp04282k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
We investigate the mechanism of damage to the carbonate ester chemical functions in Poly allyl diglycol carbonate (PADC) induced by low-energy electrons (LEEs) of <50 eV, which are major components of the initial secondary products of ionizing radiation. PADC is the world's most widely used polymeric nuclear track detector (PNTD) for swift ion detection. Using diethylene glycol monoethyl ether acetate as a surrogate for PADC, we have measured for irradiation with low-energy electrons (LEEs) of <50 eV, the electron stimulated desorption (ESD) signal of O- from 3-monolayer thick films of DGMEA by time-of-flight mass spectrometry. We find that for electron irradiation at energies >6-9 eV, the instantaneous ESD yield of O- increases with the cumulative number of incident electrons (i.e., fluence), indicating that the additional O- signal derives from an electron-induced DGMEA product. From comparison with ESD measurements from films of acetic acid and acetaldehyde, we identify that the additional desorbed O- signal derives from oxygen atoms originally adjacent to the carbonyl bond in DGMEA. Since LEEs are the predominant secondary particles produced by ionizing radiation, this finding helps to better understand the mechanism of damage to carbonate ester in PADC, which is a key step for latent track formation in PADC.
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Affiliation(s)
- Tamon Kusumoto
- National Institutes for Quantum and Radiological Sciences and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
| | - Michel Fromm
- UMR CNRS 6249 Chrono-Environnement, Université de Franche-Comté, 16 Route de Gray, F-2530 Besançon Cedex, France.
| | - Pierre Cloutier
- Départment de Médecine Nucléaire et Radiobiologie, Faculté de médecine, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Andrew D Bass
- Départment de Médecine Nucléaire et Radiobiologie, Faculté de médecine, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Léon Sanche
- Départment de Médecine Nucléaire et Radiobiologie, Faculté de médecine, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Sciences and Technology, 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan
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4
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Yamamoto S, Yoshino M, Kamada K, Yajima R, Yoshikawa A, Nakanishi K, Kataoka J. Development of an ultrahigh resolution real time alpha particle imaging system for observing the trajectories of alpha particles in a scintillator. Sci Rep 2023; 13:4955. [PMID: 37100780 PMCID: PMC10133294 DOI: 10.1038/s41598-023-31748-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/16/2023] [Indexed: 04/28/2023] Open
Abstract
High-resolution imaging of alpha particles is required in the detection of alpha radionuclides in cells or small organs for the development of radio-compounds for targeted alpha-particle therapy or other purposes. We developed an ultrahigh resolution, real time alpha-particle imaging system for observing the trajectories of alpha particles in a scintillator. The developed system is based on a magnifying unit and a cooled electron multiplying charge-coupled device (EM-CCD) camera, combined with a 100-µm-thick Ce-doped Gd3Al2Ga3O12 (GAGG) scintillator plate. Alpha particles from an Am-241 source were irradiated to the GAGG scintillator and imaged with the system. Using our system, we measured the trajectories of the alpha particles having different shapes in real time. In some of these measured trajectories, the line shapes of the alpha particles that flew in the GAGG scintillator were clearly observed. The lateral profiles of the alpha-particle trajectories were imaged with widths of ~ 2 µm. We conclude that the developed imaging system is promising for research on targeted alpha-particle therapy or other alpha particle detections that require high spatial resolution.
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Affiliation(s)
- Seiichi Yamamoto
- Faculty of Science and Engineering, Waseda University, Tokyo, Japan.
| | - Masao Yoshino
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
- C&A Corporation, Sendai, Japan
| | - Kei Kamada
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
- C&A Corporation, Sendai, Japan
| | - Ryuga Yajima
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Akira Yoshikawa
- C&A Corporation, Sendai, Japan
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Kohei Nakanishi
- Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Kataoka
- Faculty of Science and Engineering, Waseda University, Tokyo, Japan
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Kusumoto T, Akselrod MS, Harrison J, Kodaira S. Correction method of the coloration in fluorescent nuclear track detector. RADIAT MEAS 2023. [DOI: 10.1016/j.radmeas.2022.106898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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6
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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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7
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Recent progress of astatine-211 in endoradiotherapy: Great advances from fundamental properties to targeted radiopharmaceuticals. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Development of a phoswich detector composed of ZnS(Ag) and YAP(Ce) for astatine-211 imaging. RADIAT MEAS 2022. [DOI: 10.1016/j.radmeas.2022.106734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Examining features of radiation-induced damage to PADC observed using FT-IR analysis: Radiation tolerance of methine groups at three-way junctions. RADIAT MEAS 2021. [DOI: 10.1016/j.radmeas.2021.106645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Li HK, Morokoshi Y, Kodaira S, Kusumoto T, Minegishi K, Kanda H, Nagatsu K, Hasegawa S. Utility of 211At-trastuzumab for the Treatment of Metastatic Gastric Cancer in the Liver: Evaluation of a Preclinical α-Radioimmunotherapy Approach in a Clinically-relevant Mouse Model. J Nucl Med 2021; 62:1468-1474. [PMID: 33547212 DOI: 10.2967/jnumed.120.249300] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 01/13/2021] [Indexed: 02/06/2023] Open
Abstract
A liver metastasis from a primary gastric cancer (LMGC) is relatively common and results in an extremely poor prognosis due to a lack of effective therapeutics. We here demonstrate in a clinically-relevant mouse model that an α-radioimmunotherapy (α-RIT) approach with astatine-211-labeled-trastuzumab (211At-trastuzumab) has efficacy against LMGCs that are positive for human epidermal growth factor receptor 2 (HER2). Methods: 211At was produced in a cyclotron via a 209Bi (α, 2n) 211At reaction. 211At-trastuzumab was subsequently generated using a single-step labelling method. NCI-N87 cells (HER2-positive human GC cells) carrying a luciferase gene were intrasplenically transplanted into severe combined immunodeficiency mice to generate a HER2-positive LMGC model. A bio-distribution study was then conducted through the intravenous injection of 211At-trastuzumab (1 MBq) into these LMGC xenograft mice. In parallel with this experimental therapy, PBS, intact trastuzumab or 211At-non-specific human IgG (1MBq) were injected into control groups. The therapeutic efficacy was evaluated by monitoring tumor changes by chemiluminescence imaging. Monitoring of body weights, white blood cell counts, and serum markers of tissue damage were conducted at regular intervals. Microdosimetry using a CR39 plastic detector was also performed. Results: The biodistribution analysis revealed an increased uptake of 211At-trastuzumab in the metastasized tumors that reached approximately 12% of the injected dose per gram of tissue (%ID/g) at 24 hours. In contrast, its uptake to the surrounding liver was about 4%ID/g. The LMGCs in the mouse model reduced dramatically at 1 week after the single systemic injection of 211At-trastuzumab. No recurrences were observed in six of eight mice treated with this single injection and their survival time was significantly prolonged compared to the control groups, including the animals treated with 211At-non-specific antibodies. No severe toxicities or abnormalities in terms of body weight, white blood cell number, liver function, or kidney parameters were observed in the 211At-trastuzumab group. Microdosimetric studies further revealed that 211At-trastuzumab had been delivered at an 11.5- fold higher dose to the LMGC lesions compared to the normal liver. Conclusion: α-RIT with 211At-trastuzumab has considerable potential as an effective and safe therapeutic option for LMGC.
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Affiliation(s)
- Huizi Keiko Li
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | - Yukie Morokoshi
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | - Tamon Kusumoto
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | - Katsuyuki Minegishi
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | | | - Kotaro Nagatsu
- National Institutes for Quantum and Radiological Science and Technology, Japan
| | - Sumitaka Hasegawa
- National Institutes for Quantum and Radiological Science and Technology, Japan
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11
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Ogawara R, Kusumoto T, Konishi T, Hamano T, Kodaira S. Polyethylene moderator optimized for increasing thermal neutron flux in the NASBEE accelerator-based neutron field. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Yamamoto S, Hirano Y, Kamada K, Yoshikawa A. Development of an ultrahigh-resolution radiation real-time imaging system to observe trajectory of alpha particles in a scintillator. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106368] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Kodaira S, Kusumoto T, Kitamura H, Yanagida Y, Koguchi Y. Characteristics of fluorescent nuclear track detection with Ag+-activated phosphate glass. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Kusumoto T, Matsuya Y, Baba K, Ogawara R, Akselrod MS, Harrison J, Fomenko V, Kai T, Ishikawa M, Hasegawa S, Kodaira S. Verification of dose estimation of Auger electrons emitted from Cu-64 using a combination of FNTD measurements and Monte Carlo simulations. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Peltek OO, Muslimov AR, Zyuzin MV, Timin AS. Current outlook on radionuclide delivery systems: from design consideration to translation into clinics. J Nanobiotechnology 2019; 17:90. [PMID: 31434562 PMCID: PMC6704557 DOI: 10.1186/s12951-019-0524-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/14/2019] [Indexed: 02/06/2023] Open
Abstract
Radiopharmaceuticals have proven to be effective agents, since they can be successfully applied for both diagnostics and therapy. Effective application of relevant radionuclides in pre-clinical and clinical studies depends on the choice of a sufficient delivery platform. Herein, we provide a comprehensive review on the most relevant aspects in radionuclide delivery using the most employed carrier systems, including, (i) monoclonal antibodies and their fragments, (ii) organic and (iii) inorganic nanoparticles, and (iv) microspheres. This review offers an extensive analysis of radionuclide delivery systems, the approaches of their modification and radiolabeling strategies with the further prospects of their implementation in multimodal imaging and disease curing. Finally, the comparative outlook on the carriers and radionuclide choice, as well as on the targeting efficiency of the developed systems is discussed.
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Affiliation(s)
- Oleksii O Peltek
- Russian Research Center of Radiology and Surgical Technologies (RRCRST) of Ministry of Public Health, Leningradskaya Street 70 Pesochny, Saint-Petersburg, 197758, Russian Federation
| | - Albert R Muslimov
- Russian Research Center of Radiology and Surgical Technologies (RRCRST) of Ministry of Public Health, Leningradskaya Street 70 Pesochny, Saint-Petersburg, 197758, Russian Federation
| | - Mikhail V Zyuzin
- Faculty of Physics and Engineering, ITMO University, St. Petersburg, 197101, Russia
| | - Alexander S Timin
- Russian Research Center of Radiology and Surgical Technologies (RRCRST) of Ministry of Public Health, Leningradskaya Street 70 Pesochny, Saint-Petersburg, 197758, Russian Federation.
- Research School of Chemical and Biomedical Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050, Russia.
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16
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The role of molecular and radical mobility in the creation of CO2 molecules and OH groups in PADC irradiated with C and O ions. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Konishi T, Kodaira S, Itakura Y, Ohsawa D, Homma-Takeda S. IMAGING URANIUM DISTRIBUTION ON RAT KIDNEY SECTIONS THROUGH DETECTION OF ALPHA TRACKS USING CR-39 PLASTIC NUCLEAR TRACK DETECTOR. RADIATION PROTECTION DOSIMETRY 2019; 183:242-246. [PMID: 30521045 DOI: 10.1093/rpd/ncy224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Uranium is renowned as a global contaminant, and attracts major concern with regards to the health risks involved because its nephrotoxicity. This paper discusses the development of a simple method to identify accumulated regions or localized sites of uranium within kidneys using the CR-39 plastic nuclear track detector. To demonstrate the proposed method, renal cryo-sections (5 μm-t) from Wistar male rats, subcutaneously administered with uranyl acetate (2 mg/kg), were prepared on day one after administration. Concerned sections were subsequently placed on CR-39, stored for 1.25 years, and then etched in a 7 M NaOH solution at 70°C for 3 h. α-tracks were then detected in the form of etch pits, corresponding to uranium, and also the tissue shape and structure were transferred as a roughness on the surface of CR-39. As observed, the proposed method served to facilitate simultaneous detection and identification of localized regions of uranium accumulation within kidneys.
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Affiliation(s)
- T Konishi
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - S Kodaira
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Y Itakura
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
- Graduate School of Science and Engineering, Chiba University, Chiba, Japan
| | - D Ohsawa
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
- Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - S Homma-Takeda
- Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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18
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Kodaira S, Morokoshi Y, Li HK, Konishi T, Kurano M, Hasegawa S. Evidence of Local Concentration of α-Particles from 211At-Labeled Antibodies in Liver Metastasis Tissue. J Nucl Med 2019; 60:497-501. [PMID: 30291193 PMCID: PMC6448461 DOI: 10.2967/jnumed.118.216853] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/05/2018] [Indexed: 12/12/2022] Open
Abstract
We investigated the local concentration of α-particles from 211At-labeled trastuzumab antibodies against human epidermal growth factor receptor type 2 antigens in liver metastasis tissue of mice. Methods: Mice carrying metastatic cancer in their liver were injected with 211At-agent. After 12 h, the liver was removed and sliced, and 2 tissue samples of liver tissues without lesions and one containing metastatic lesions were mounted on the CR-39 plastic nuclear track detector. Microscope images of the tissues on the CR-39 were acquired. After irradiation for 31 h, the tissues were removed from the CR-39. A microscope image of α-particle tracks on the CR-39 was acquired after chemical etching. The positions of each tissue sample and the emitted α-particle tracks were adjusted to the same coordinates. Results: The positional distribution of α-particle tracks emitted from 211At was consistent within the tissue. The α-particle tracks were mainly allocated in the tumor region of the tissue. The absorbed dose in individual cells segmented by 10-μm intervals was obtained by the spectroscopic analysis of the linear-energy-transfer spectrum. The concentration efficiency-the track density ratio of α-particle tracks in the necrotized tissue, which was the tumor region, to the normal tissue-was found to be 6.0 ± 0.2. In the tumor region, the high-linear-energy-transfer α-particles deposited a large enough dose to cause lethal damage to the cancer cells. Conclusion: The total absorbed dose ranged from 1 to 7 Gy with a peak at around 2 Gy, which would correspond to a 2-3 times higher biologically equivalent dose because of the high relative biological effectiveness of the α-particles emitted from 211At.
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Affiliation(s)
- Satoshi Kodaira
- Radiation Measurement Research Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Yukie Morokoshi
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan; and
| | - Huizi Keiko Li
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan; and
| | - Teruaki Konishi
- Regenerative Therapy Research Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Mieko Kurano
- Radiation Measurement Research Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Sumitaka Hasegawa
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan; and
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19
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Li HK, Sugyo A, Tsuji AB, Morokoshi Y, Minegishi K, Nagatsu K, Kanda H, Harada Y, Nagayama S, Katagiri T, Nakamura Y, Higashi T, Hasegawa S. α-particle therapy for synovial sarcoma in the mouse using an astatine-211-labeled antibody against frizzled homolog 10. Cancer Sci 2018; 109:2302-2309. [PMID: 29952132 PMCID: PMC6029834 DOI: 10.1111/cas.13636] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/17/2018] [Accepted: 05/02/2018] [Indexed: 11/28/2022] Open
Abstract
Synovial sarcoma (SS) is a rare yet refractory soft‐tissue sarcoma that predominantly affects young adults. We show in a mouse model that radioimmunotherapy (RIT) with an α‐particle emitting anti‐Frizzled homolog 10 (FZD10) antibody, synthesized using the α‐emitter radionuclide astatine‐211 (211At‐OTSA101), suppresses the growth of SS xenografts more efficiently than the corresponding β‐particle emitting anti‐FZD10 antibody conjugated with the β‐emitter yettrium‐90 (90Y‐OTSA101). In biodistribution analysis, 211At was increased in the SS xenografts but decreased in other tissues up to 1 day after injection as time proceeded, albeit with a relatively higher uptake in the stomach. Single 211At‐OTSA101 doses of 25 and 50 μCi significantly suppressed SS tumor growth in vivo, whereas a 50‐μCi dose of 90Y‐OTSA101 was needed to achieve this. Importantly, 50 μCi of 211At‐OTSA101 suppressed tumor growth immediately after injection, whereas this effect required several days in the case of 90Y‐OTSA101. Both radiolabeled antibodies at the 50‐μCi dosage level significantly prolonged survival. Histopathologically, severe cellular damage accompanied by massive cell death was evident in the SS xenografts at even 1 day after the 211At‐OTSA101 injection, but these effects were relatively milder with 90Y‐OTSA101 at the same timepoint, even though the absorbed doses were comparable (3.3 and 3.0 Gy, respectively). We conclude that α‐particle RIT with 211At‐OTSA101 is a potential new therapeutic option for SS.
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Affiliation(s)
- Huizi Keiko Li
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan.,Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Aya Sugyo
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Atsushi B Tsuji
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Yukie Morokoshi
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Katsuyuki Minegishi
- Targetry and Target Chemistry Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Kotaro Nagatsu
- Targetry and Target Chemistry Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Hiroaki Kanda
- Department of Pathology, The Cancer Institute of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | | | - Satoshi Nagayama
- Department of Gastroenterological Surgery, The Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Toyomasa Katagiri
- Division of Genome Medicine, Institute for Genome Research, Tokushima University, Tokushima, Japan
| | - Yusuke Nakamura
- Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Tatsuya Higashi
- Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Sumitaka Hasegawa
- Radiation and Cancer Biology Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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Nagao Y, Yamaguchi M, Watanabe S, Ishioka NS, Kawachi N, Watabe H. Astatine-211 imaging by a Compton camera for targeted radiotherapy. Appl Radiat Isot 2018; 139:238-243. [PMID: 29864741 DOI: 10.1016/j.apradiso.2018.05.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 04/23/2018] [Accepted: 05/22/2018] [Indexed: 11/17/2022]
Abstract
Astatine-211 is a promising radionuclide for targeted radiotherapy. It is required to image the distribution of targeted radiotherapeutic agents in a patient's body for optimization of treatment strategies. We proposed to image 211At with high-energy photons to overcome some problems in conventional planar or single-photon emission computed tomography imaging. We performed an imaging experiment of a point-like 211At source using a Compton camera, and demonstrated the capability of imaging 211At with the high-energy photons for the first time.
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Affiliation(s)
- Yuto Nagao
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan; Graduate School of Biomedical Engineering, Tohoku University, 6-6-12 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
| | - Mitsutaka Yamaguchi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.
| | - Shigeki Watanabe
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.
| | - Noriko S Ishioka
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.
| | - Naoki Kawachi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.
| | - Hiroshi Watabe
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan; Graduate School of Biomedical Engineering, Tohoku University, 6-6-12 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
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