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Forrester R, Dutech G, Akin A, Fassbender ME, Mastren T. An electrochemical generator for the continual supply of 213Bi from 225Ac for use in targeted alpha therapy applications. Nucl Med Biol 2024; 136-137:108941. [PMID: 39002499 DOI: 10.1016/j.nucmedbio.2024.108941] [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: 04/03/2024] [Revised: 06/25/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
Bismuth-213 is a radionuclide of interest for targeted alpha therapy and is supplied via a radiochemical generator system through the decay of 225Ac. Radionuclide generators employ longer lived "parent" radionuclides to routinely supply shorter-lived "daughter" radionuclides. The traditional 225Ac/213Bi radiochemical generator relies on an organic cation exchange resin where 225Ac binds to the resin and 213Bi is routinely eluted. These resins degrade when they absorb large doses of ionizing radiation (>1 × 106 Gy/mg), which has been observed when the loading activity of 225Ac exceeds 2.59*109 Bq (70 mCi). Herein we report the development of an electrochemical generator for the supply of 213Bi that has the potential to overcome this limitation. Bismuth-213 spontaneously electrodeposits onto nickel foils in 0.1 M hydrochloric acid at 70 °C. Using this method, we were able to plate an average of 73 ± 4 % of the 213Bi in solution and obtain a final 213Bi recovery of 65 ± 8 % in 0.1 M citrate pH 4.5 via reverse electrolysis using titanium as the cathode. The recovered 213Bi had an average radiochemical purity of >99.8 % and was successfully used to radiolabel DOTATATE with an average radiochemical yield of 85.1 % (not optimized).
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Affiliation(s)
- Ryan Forrester
- Nuclear Engineering Program, University of Utah, 110 Central Campus Dr, Salt Lake City, UT 84112, USA
| | - Guy Dutech
- Chemistry Division, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, USA
| | - Andrew Akin
- Chemistry Division, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, USA
| | - Michael E Fassbender
- Chemistry Division, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, USA
| | - Tara Mastren
- Nuclear Engineering Program, University of Utah, 110 Central Campus Dr, Salt Lake City, UT 84112, USA.
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Qiu L, Wu J, Luo N, Xiao Q, Geng J, Xia L, Liao J, Yang Y, Liu N, Zhang J, Li F. Preparation of Medical 228Th- 224Ra Radionuclide Generator Based on SiO 2@TiO 2 Microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11723-11731. [PMID: 38775311 DOI: 10.1021/acs.langmuir.4c01138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
224Ra (T1/2 = 3.63 d), an α-emitting radionuclide, holds significant promise in cancer endoradiotherapy. Current 224Ra-related therapy is still scarce because of the lack of reliable radionuclide supply. The 228Th-224Ra radionuclide generator can undoubtedly introduce continuous and sustainable availability of 224Ra for advanced nuclear medicine. However, conventional metal oxides for such radionuclide generators manifest suboptimal adsorption capacities for the parent nuclide, primarily attributable to their limited surface area. In this work, core-shell SiO2@TiO2 microspheres were proposed to develop as column materials for the construction of a 228Th-224Ra generator. SiO2@TiO2 microspheres were well prepared and systematically characterized, which has also been demonstrated to have good adsorption capacity to 228Th and very weak binding affinity toward 224Ra via simulated chemical separation. Upon introducing 228Th-containing solution onto the SiO2@TiO2 functional column, a 228Th-224Ra generator with excellent retention of the parent radionuclide and ideal elution efficiency of daughter radionuclide was obtained. The prepared 228Th-224Ra generator can produce 224Ra with high purity and medical usability in good elution efficiency (98.72%) even over five cycles. To the best of our knowledge, this is the first time that the core-shell mesoporous materials have been applied in a radionuclide generator, which can offer valuable insights for materials chemistry, radiochemical separation, and biological medicine.
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Affiliation(s)
- Long Qiu
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Jianrong Wu
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Ning Luo
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Qian Xiao
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Junshan Geng
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Lingting Xia
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Jinsong Zhang
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Feize Li
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
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Lin Y, Wang J, Shao K, Zhang G, Wang X, Liu T, Hu P. Two-step separation of Th, La and Ba using combined chromatographic columns. J Radioanal Nucl Chem 2023. [DOI: 10.1007/s10967-023-08761-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Separation of radium and actinium using zirconia. Appl Radiat Isot 2022; 185:110238. [DOI: 10.1016/j.apradiso.2022.110238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/04/2022] [Accepted: 04/07/2022] [Indexed: 11/23/2022]
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