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Nakamura S, Tanaka H, Kato T, Akita K, Takemori M, Kasai Y, Kashihara T, Takai Y, Nihei K, Onishi H, Igaki H. A national survey of medical staffs' required capability and workload for accelerator-based boron neutron capture therapy. JOURNAL OF RADIATION RESEARCH 2024; 65:712-724. [PMID: 39167773 DOI: 10.1093/jrr/rrae058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/03/2024] [Indexed: 08/23/2024]
Abstract
This study aimed to identify the required capabilities and workload of medical staff in accelerator-based boron neutron capture therapy (BNCT). From August to September 2022, a questionnaire related to the capabilities and workload in the accelerator-based BNCT was administered to 12 physicians, 7 medical physicists and 7 radiological technologists engaged in BNCT and 6 other medical physicists who were not engaged in BNCT to compare the results acquired by those engaged in BNCT. Only 6-21% of patients referred for BNCT received it. Furthermore, 30-75% of patients who received BNCT were treated at facilities located within their local district. The median required workload per treatment was 55 h. Considering additional workloads for ineligible patients, the required workload reached ~1.2 times longer than those for only eligible patients' treatment. With respect to capabilities, discrepancies were observed in treatment planning, quality assurance and quality control, and commissioning between medical physicists and radiological technologists. Furthermore, the specialized skills required by medical physicists are impossible to acquire from the experience of conventional radiotherapies as physicians engaged in BNCT were specialized not only in radiation oncology, but also in other fields. This study indicated the required workload and staff capabilities for conducting accelerator-based BNCT considering actual clinical conditions. The workload required for BNCT depends on the occupation. It is necessary to establish an educational program and certification system for the skills required to safely and effectively provide BNCT to patients.
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Affiliation(s)
- Satoshi Nakamura
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Medical Physics Laboratory, Division of Health Science, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - Hiroki Tanaka
- Particle Radiation Oncology Research Center, Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010 Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Takahiro Kato
- Department of Radiological Sciences, School of Health Sciences, Fukushima Medical University, 10-6 Sakae-machi, Fukushima City, Fukushima 960-8516, Japan
- Department of Radiation Physics and Technology, Southern Tohoku BNCT Research Center 7-10 Yatsuyamada, Koriyama, Fukushima 963-8052, Japan
| | - Kazuhiko Akita
- Kansai BNCT Medical Center, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki-shi, Osaka 569-8686, Japan
| | - Mihiro Takemori
- Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Department of Radiation Oncology, National Cancer Center Hospital 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Department of Radiology and Radiation Oncology, Edogawa Hospital, 2-24-18 Hgashikoiwa, Edogawa-ku, Tokyo 133-0052, Japan
| | - Yusaku Kasai
- Medical Physics Laboratory, Division of Health Science, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita City, Osaka 565-0871, Japan
- Department of Radiological Technology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Tairo Kashihara
- Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Department of Radiation Oncology, National Cancer Center Hospital 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Yoshihiro Takai
- Department of Radiation Oncology, Southern Tohoku BNCT Research Center, 7-10 Yatsuyamada, Koriyama, Fukushima 963-8052, Japan
| | - Keiji Nihei
- Kansai BNCT Medical Center, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki-shi, Osaka 569-8686, Japan
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki-shi, Osaka 569-8686, Japan
| | - Hiroshi Onishi
- Department of Radiology, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan
| | - Hiroshi Igaki
- Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
- Department of Radiation Oncology, National Cancer Center Hospital 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
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Fujimoto T, Teraishi F, Kanehira N, Tajima T, Sakurai Y, Kondo N, Yamagami M, Kuwada A, Morihara A, Kitamatsu M, Fujimura A, Suzuki M, Takaguchi Y, Shigeyasu K, Fujiwara T, Michiue H. BNCT pancreatic cancer treatment strategy with glucose-conjugated boron drug. Biomaterials 2024; 309:122605. [PMID: 38754291 DOI: 10.1016/j.biomaterials.2024.122605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/01/2024] [Accepted: 05/05/2024] [Indexed: 05/18/2024]
Abstract
Multidisciplinary therapy centered on radical surgery for resectable pancreatic cancer is expected to prolong prognosis, but relies on CA19-9 biomarker levels to determine treatment strategy. Boron neutron capture therapy (BNCT) is a chemoradiotherapy using tumor hyperaccumulator boron drugs and neutron irradiation. The purpose of this study is to investigate novel boron drug agents for BNCT for pancreatic cancer. Bioinformatics was used to evaluate the uptake of current boron amino acid (BPA) drugs for BNCT into pancreatic cancer. The expression of the amino acid transporter LAT1, a BPA uptake transporter, was low in pancreatic cancer and even lower in high CA19-9 pancreatic cancer. In contrast, the glucose transporter was high in high CA19-9 pancreatic cancers and inversely correlated with LAT1 expression. Considering the low EPR effect in pancreatic cancer, we synthesized a small molecule Glucose-BSH, which is boron BSH bound to glucose, and confirmed its specific uptake in pancreatic cancer. uptake of Glucose-BSH was confirmed in an environment compatible with the tumor microenvironment. The therapeutic efficacy and safety of Glucose-BSH by therapeutic neutron irradiation were confirmed with BNCT. We report Glucose-BSH boron drug discovery study of a Precision Medicine BNCT with application to high CA19-9 pancreatic cancer.
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Affiliation(s)
- Takuya Fujimoto
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Fuminori Teraishi
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Noriyuki Kanehira
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Tomoyuki Tajima
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Yoshinori Sakurai
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Natsuko Kondo
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Masahiro Yamagami
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Atsushi Kuwada
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Akira Morihara
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Mizuki Kitamatsu
- Department of Applied Chemistry, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Atsushi Fujimura
- Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Department of Cellular Physiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Okayama, 700-8558, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Yutaka Takaguchi
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan; Department of Material Design and Engineering, Faculty of Sustainable Design, University of Toyama, Toyama, 930-8555, Japan
| | - Kunitoshi Shigeyasu
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Toshiyoshi Fujiwara
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Hiroyuki Michiue
- Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan.
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Barth RF, Gupta N, Kawabata S. Evaluation of sodium borocaptate (BSH) and boronophenylalanine (BPA) as boron delivery agents for neutron capture therapy (NCT) of cancer: an update and a guide for the future clinical evaluation of new boron delivery agents for NCT. Cancer Commun (Lond) 2024; 44:893-909. [PMID: 38973634 PMCID: PMC11337926 DOI: 10.1002/cac2.12582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 05/24/2024] [Accepted: 06/13/2024] [Indexed: 07/09/2024] Open
Abstract
Boron neutron capture therapy (BNCT) is a cancer treatment modality based on the nuclear capture and fission reactions that occur when boron-10, a stable isotope, is irradiated with neutrons of the appropriate energy to produce boron-11 in an unstable form, which undergoes instantaneous nuclear fission to produce high-energy, tumoricidal alpha particles. The primary purpose of this review is to provide an update on the first drug used clinically, sodium borocaptate (BSH), by the Japanese neurosurgeon Hiroshi Hatanaka to treat patients with brain tumors and the second drug, boronophenylalanine (BPA), which first was used clinically by the Japanese dermatologist Yutaka Mishima to treat patients with cutaneous melanomas. Subsequently, BPA has become the primary drug used as a boron delivery agent to treat patients with several types of cancers, specifically brain tumors and recurrent tumors of the head and neck region. The focus of this review will be on the initial studies that were carried out to define the pharmacokinetics and pharmacodynamics of BSH and BPA and their biodistribution in tumor and normal tissues following administration to patients with high-grade gliomas and their subsequent clinical use to treat patients with high-grade gliomas. First, we will summarize the studies that were carried out in Japan with BSH and subsequently at our own institution, The Ohio State University, and those of several other groups. Second, we will describe studies carried out in Japan with BPA and then in the United States that have led to its use as the primary drug that is being used clinically for BNCT. Third, although there have been intense efforts to develop new and better boron delivery agents for BNCT, none of these have yet been evaluated clinically. The present report will provide a guide to the future clinical evaluation of new boron delivery agents prior to their clinical use for BNCT.
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Affiliation(s)
- Rolf F. Barth
- Department of PathologyThe Ohio State UniversityColumbusOhioUSA
| | - Nilendu Gupta
- Department of Radiation OncologyThe Ohio State UniversityColumbusOhioUSA
| | - Shinji Kawabata
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityTakatsukiOsakaJapan
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Barth RF, Wu G, Vicente MDGH, Grecula JC, Gupta N. Boron neutron capture therapy of cancer: where do we stand now? Cancer Commun (Lond) 2024; 44:889-892. [PMID: 38973667 PMCID: PMC11337919 DOI: 10.1002/cac2.12581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/09/2024] [Accepted: 06/13/2024] [Indexed: 07/09/2024] Open
Affiliation(s)
- Rolf F. Barth
- Department of PathologyThe Ohio State UniversityColumbusOhioUSA
| | - Gong Wu
- Mass Spectrometry and Proteomics FacilityThe Ohio State UniversityColumbusOhioUSA
| | | | - John C Grecula
- Department of Radiation OncologyThe Ohio State UniversityColumbusOhioUSA
| | - Nilendu Gupta
- Department of Radiation OncologyThe Ohio State UniversityColumbusOhioUSA
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Fujikawa Y, Kawabata S, Tsujino K, Yamada H, Kashiwagi H, Yagi R, Hiramatsu R, Nonoguchi N, Takami T, Sasaki A, Hu N, Takata T, Tanaka H, Suzuki M, Wanibuchi M. Boron neutron capture therapy delays the decline in neurological function in a mouse model of metastatic spinal tumors. Cancer Sci 2024; 115:2774-2785. [PMID: 38860412 PMCID: PMC11309935 DOI: 10.1111/cas.16245] [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: 04/10/2024] [Revised: 05/16/2024] [Accepted: 05/31/2024] [Indexed: 06/12/2024] Open
Abstract
Metastatic spinal tumors are increasingly prevalent due to advancements in cancer treatment, leading to prolonged survival rates. This rising prevalence highlights the need for developing more effective therapeutic approaches to address this malignancy. Boron neutron capture therapy (BNCT) offers a promising solution by delivering targeted doses to tumors while minimizing damage to normal tissue. In this study, we evaluated the efficacy and safety of BNCT as a potential therapeutic option for spine metastases in mouse models induced by A549 human lung adenocarcinoma cells. The animal models were randomly allocated into three groups: untreated (n = 10), neutron irradiation only (n = 9), and BNCT (n = 10). Each mouse was administered 4-borono-L-phenylalanine (250 mg/kg) intravenously, followed by measurement of boron concentrations 2.5 h later. Overall survival, neurological function of the hindlimb, and any adverse events were assessed post irradiation. The tumor-to-normal spinal cord and blood boron concentration ratios were 3.6 and 2.9, respectively, with no significant difference observed between the normal and compressed spinal cord tissues. The BNCT group exhibited significantly prolonged survival rates compared with the other groups (vs. untreated, p = 0.0015; vs. neutron-only, p = 0.0104, log-rank test). Furthermore, the BNCT group demonstrated preserved neurological function relative to the other groups (vs. untreated, p = 0.0004; vs. neutron-only, p = 0.0051, multivariate analysis of variance). No adverse events were observed post irradiation. These findings indicate that BNCT holds promise as a novel treatment modality for metastatic spinal tumors.
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Affiliation(s)
- Yoshiki Fujikawa
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Shinji Kawabata
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Kohei Tsujino
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Hironori Yamada
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Hideki Kashiwagi
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Ryokichi Yagi
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Ryo Hiramatsu
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Naosuke Nonoguchi
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Toshihiro Takami
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Akinori Sasaki
- Kansai BNCT Medical CenterOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Naonori Hu
- Kansai BNCT Medical CenterOsaka Medical and Pharmaceutical UniversityOsakaJapan
| | - Takushi Takata
- Institute for Integrated Radiation and Nuclear ScienceKyoto UniversityOsakaJapan
| | - Hiroki Tanaka
- Institute for Integrated Radiation and Nuclear ScienceKyoto UniversityOsakaJapan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear ScienceKyoto UniversityOsakaJapan
| | - Masahiko Wanibuchi
- Department of NeurosurgeryOsaka Medical and Pharmaceutical UniversityOsakaJapan
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Shen S, Wang S, Zhou D, Wu X, Gao M, Wu J, Yang Y, Pan X, Wang N. A clinician's perspective on boron neutron capture therapy: promising advances, ongoing trials, and future outlook. Int J Radiat Biol 2024; 100:1126-1142. [PMID: 38986056 DOI: 10.1080/09553002.2024.2373746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/15/2024] [Accepted: 06/13/2024] [Indexed: 07/12/2024]
Abstract
PURPOSE This comprehensive review aims to provide a unique clinical perspective on the latest advances and ongoing boron neutron capture therapy (BNCT) trials for various cancers. METHODS We critically analyzed clinical data from BNCT trials for head and neck cancer, glioblastoma, melanoma, meningioma, breast cancer, and liver tumors. We investigated differences in tumor responses and normal tissue toxicities among trials and discussed potential contributing factors. We also identified the limitations of early BNCT trials and proposed strategies to optimize future trial design. RESULTS BNCT has shown promising results in treating head and neck cancer, with high response rates and improved survival in patients with recurrent disease. In glioblastoma, BNCT combined with surgery and chemotherapy has demonstrated survival benefits compared to standard treatments. BNCT has also been successfully used for recurrent high-grade meningiomas and shows potential for melanomas, extramammary Paget's disease, and liver tumors. However, differences in tumor responses and toxicities were observed among trials, potentially attributable to variations in treatment protocols, patient characteristics, and evaluation methods. CONCLUSIONS BNCT is a promising targeted radiotherapy for various cancers. Further optimization and well-designed randomized controlled trials are needed to establish its efficacy and safety. Future studies should focus on standardizing treatment protocols and addressing limitations to guide clinical decision-making and research priorities.
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Affiliation(s)
- Shumin Shen
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Shanghu Wang
- Department of Radiotherapy, Anhui Chest Hospital, Hefei, China
| | - Dachen Zhou
- Department of General Surgery, The Second Hospital of Anhui Medical University, Hefei, China
| | - Xiuwei Wu
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Mingzhu Gao
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Jinjin Wu
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Yucai Yang
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
| | - Xiaoxi Pan
- Department of Nuclear Medicine, The Second Hospital of Anhui Medical University, Hefei, China
| | - Nianfei Wang
- Department of Oncology, The Second Hospital of Anhui Medical University, Hefei, China
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Lin KH, Chen YW, Wang LW, Wang YF, Hu LH, Ting CH, Lee TH, Lee JC, Peng NJ. Prognostic assessment of 18F-boronophenylalanine positron emission tomography (BPA-PET) in salvage boron neutron capture therapy for malignant brain tumors. Quant Imaging Med Surg 2024; 14:4177-4188. [PMID: 38846276 PMCID: PMC11151257 DOI: 10.21037/qims-23-1769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 04/22/2024] [Indexed: 06/09/2024]
Abstract
Background Boron neutron capture therapy (BNCT) stands out as a propitious anti-cancer modality. 18F-boronophenylalanine positron emission tomography (BPA-PET) holds the potential to ascertain the concentration of BPA within the tumor, enabling meticulous treatment planning and outcome evaluation. However, no studies have been conducted on comparing the outcomes of those treated with BNCT to those who did not undergo this therapy. This study endeavors to analyze the correlation between BPA-PET and BNCT in the context of malignant brain tumors, and assess the survival outcomes following BNCT. Methods A cohort study was performed on patients who underwent BPA-PET between February 2017 and April 2022 in our hospital. Patients were stratified into two groups: those subjected to BNCT (Group 1) and those not (Group 2). The tumor to normal tissue (T/N) ratio derived from BPA-PET was set at 2.5. The findings were scrutinized based on clinical follow-up. Student's t-test and Chi-squared test were employed to discern differences between the groups. A cumulative survival curve was constructed employing the Kaplan-Meier method. Differences were considered statistically significant at P<0.05. Results In total, 116 patients with T/N ratios obtained from BPA-PET were enrolled. BNCT was administered to 58 patients, while mortality was observed in 100 patients. The median overall survival (OS) for the two groups was 8.5 and 6.0 months, respectively. The cumulative OS exhibited no significant discrepancy between the two groups, nor in their T/N ratios. Within Group 1, 44 out of 58 (75.9%) patients exhibited T/N ratios exceeding 2.5. Excluding 3 patients who expired within 3 months, 55 out of 58 patients were evaluated for response after BNCT. The objective response rate (ORR) was 30.9%. Patients achieving ORR displayed substantially higher survival rates compared to those without (median OS 13.5 vs. 8.3 months, P=0.0021), particularly when T/N ratio exceeded 2.5 (median OS 14.8 vs. 9.0 months, P=0.0199). Conclusions BNCT does not appear indispensable for prolonging the survival of patients afflicted with malignant brain tumors. Nevertheless, it proves advantageous when ORR is attained, a condition closely linked to the values of T/N ratio derived from BPA-PET.
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Affiliation(s)
- Ko-Han Lin
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
| | - Yi-Wei Chen
- Department of Radiation Oncology, Taipei Veterans General Hospital, Taipei
| | - Ling-Wei Wang
- Department of Radiation Oncology, Taipei Veterans General Hospital, Taipei
| | - Yuh-Feng Wang
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
| | - Lien-Hsin Hu
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei
| | - Chien Hsin Ting
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
| | - Tse-Hao Lee
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
| | - Jia-Cheng Lee
- Department of Radiation Oncology, Taipei Veterans General Hospital, Taipei
| | - Nan-Jing Peng
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei
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Zhou T, Igawa K, Kasai T, Sadahira T, Wang W, Watanabe T, Bekku K, Katayama S, Iwata T, Hanafusa T, Xu A, Araki M, Michiue H, Huang P. The current status and novel advances of boron neutron capture therapy clinical trials. Am J Cancer Res 2024; 14:429-447. [PMID: 38455422 PMCID: PMC10915318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 01/18/2024] [Indexed: 03/09/2024] Open
Abstract
Boron neutron capture therapy (BNCT) is a treatment method that focuses on improving the cure rate of patients with cancer who are difficult to treat using traditional clinical methods. By utilizing the high neutron absorption cross-section of boron, material rich in boron inside tumor cells can absorb neutrons and release high-energy ions, thereby destroying tumor cells. Owing to the short range of alpha particles, this method can precisely target tumor cells while minimizing the inflicted damage to the surrounding normal tissues, making it a potentially advantageous method for treating tumors. Globally, institutions have progressed in registered clinical trials of BNCT for multiple body parts. This review summarized the current achievements in registered clinical trials, Investigator-initiated clinical trials, aimed to integrate the latest clinical research literature on BNCT and to shed light on future study directions.
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Affiliation(s)
- Tianyun Zhou
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
- Department of Urology, The Second Affiliated Hospital of Dalian Medical UniversityDalian, Liaoning, China
| | - Kazuyo Igawa
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
| | - Tomonari Kasai
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
| | - Takuya Sadahira
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Wei Wang
- Department of Urology, The Second Affiliated Hospital of Dalian Medical UniversityDalian, Liaoning, China
| | - Tomofumi Watanabe
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Kensuke Bekku
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Satoshi Katayama
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Takehiro Iwata
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Tadashi Hanafusa
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
| | - Abai Xu
- Department of Urology, Zhujiang Hospital, Southern Medical UniversityGuangzhou, Guangdong, China
| | - Motoo Araki
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
| | - Hiroyuki Michiue
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
| | - Peng Huang
- Neutron Therapy Research Center, Okayama UniversityOkayama, Japan
- Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama, Japan
- Department of Urology, Zhujiang Hospital, Southern Medical UniversityGuangzhou, Guangdong, China
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Sakai M, Tamaki S, Murata I, Parajuli RK, Matsumura A, Kubo N, Tashiro M. Experimental study on Compton camera for boron neutron capture therapy applications. Sci Rep 2023; 13:22883. [PMID: 38129553 PMCID: PMC10739814 DOI: 10.1038/s41598-023-49955-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Boron neutron capture therapy (BNCT) is a high-dose-intensive radiation therapy that has gained popularity due to advancements in accelerator neutron sources. To determine the dose for BNCT, it is necessary to know the difficult-to-determine boron concentration and neutron fluence. To estimate this dose, we propose a method of measuring the prompt γ-rays (PGs) from the boron neutron capture reaction (BNCR) using a Compton camera. We performed a fundamental experiment to verify basic imaging performance and the ability to discern the PGs from 511 keV annihilation γ-rays. A Si/CdTe Compton camera was used to image the BNCR and showed an energy peak of 478 keV PGs, separate from the annihilation γ-ray peak. The Compton camera could visualize the boron target with low neutron intensity and high boron concentration. This study experimentally confirms the ability of Si/CdTe Compton cameras to image BNCRs.
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Affiliation(s)
- M Sakai
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - S Tamaki
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - I Murata
- Graduate School of Engineering, Osaka University, Osaka, Japan
| | - R K Parajuli
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
- Sydney Imaging Core Research Facility, The University of Sydney, Camperdown, NSW, 2050, Australia
| | - A Matsumura
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - N Kubo
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - M Tashiro
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
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10
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Okada S, Nishimura K, Ainaya Q, Shiraishi K, Anufriev SA, Sivaev IB, Sakurai Y, Suzuki M, Yokoyama M, Nakamura H. Development of a Gadolinium-Boron-Conjugated Albumin for MRI-Guided Neutron Capture Therapy. Mol Pharm 2023; 20:6311-6318. [PMID: 37909734 DOI: 10.1021/acs.molpharmaceut.3c00726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Noninvasive monitoring of boron agent biodistribution is required in advance of neutron capture therapy. In this study, we developed a gadolinium-boron-conjugated albumin (Gd-MID-BSA) for MRI-guided neutron capture therapy. Gd-MID-BSA was prepared by labeling bovine serum albumin with a maleimide-functionalized gadolinium complex and a maleimide-functionalized closo-dodecaborate orthogonally. The accumulation of Gd-MID-BSA in tumors in CT26 tumor-bearing mice reached a maximum at 24 h after the injection, as confirmed by T1-based MRI and biodistribution analysis using inductively coupled plasma optical emission spectrometry. The concentrations of boron and gadolinium in the tumors exceeded the thresholds required for boron neutron capture therapy (BNCT) and gadolinium neutron capture therapy (GdNCT), respectively. The boron concentration ratios of tumor to blood and tumor to normal tissues satisfied the clinical criteria, indicating the reduction of undesired nuclear reactions of endogenous nuclei. The molar ratio of boron to gadolinium in the tumor was close to that of Gd-MID-BSA, demonstrating that the accumulation of Gd-MID-BSA in the tumor can be evaluated by MRI. Thermal neutron irradiation with Gd-MID-BSA resulted in significant suppression of tumor growth compared to the group injected with a boron-conjugated albumin without gadolinium (MID-BSA). The neutron irradiation with Gd-MID-BSA did not cause apparent side effects. These results demonstrate that the conjugation of gadolinium and boron within the albumin molecule offers a novel strategy for enhancing the therapeutic effect of BNCT and the potential of MRI-guided neutron capture therapy as a promising treatment for malignant tumors.
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Affiliation(s)
- Satoshi Okada
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
| | - Kai Nishimura
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
| | - Qarri Ainaya
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
| | - Kouichi Shiraishi
- Division of Medical Engineering, Research Center for Medical Sciences, The Jikei University School of Medicine, 163-1 Kashiwashita, Kashiwa, Chiba 277-8567, Japan
| | - Sergey A Anufriev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119334 Moscow, Russia
| | - Igor B Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119334 Moscow, Russia
| | - Yoshinori Sakurai
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010 Asashiro-nishi, Kumatori, Sennan, Osaka 590-0494, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010 Asashiro-nishi, Kumatori, Sennan, Osaka 590-0494, Japan
| | - Masayuki Yokoyama
- Division of Medical Engineering, Research Center for Medical Sciences, The Jikei University School of Medicine, 163-1 Kashiwashita, Kashiwa, Chiba 277-8567, Japan
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
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11
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Nishikawa M, Yu J, Kang HG, Suzuki M, Komatsu N. Rational Design, Multistep Synthesis and in Vitro Evaluation of Poly(glycerol) Functionalized Nanodiamond Conjugated with Boron-10 Cluster and Active Targeting Moiety for Boron Neutron Capture Therapy. Chemistry 2023; 29:e202302073. [PMID: 37589488 DOI: 10.1002/chem.202302073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/08/2023] [Accepted: 08/15/2023] [Indexed: 08/18/2023]
Abstract
Boron neutron capture therapy (BNCT), advanced cancer treatment utilizing nuclear fission of 10 B atom in cancer cells, is attracting increasing attention. As 10 B delivery agent, sodium borocaptate (10 BSH, 10 B12 H11 SH ⋅ 2Na), has been used in clinical studies along with L-boronophenylalanine. Recently, this boron cluster has been conjugated with lipids, polymers or nanoparticles to increase selectivity to and retentivity in tumor. In this work, anticancer nanoformulations for BNCT are designed, consisting of poly(glycerol) functionalized detonation nanodiamonds (DND-PG) as a hydrophilic nanocarrier, the boron cluster moiety (10 B12 H11 2- ) as a dense boron-10 source, and phenylboronic acid or RGD peptide as an active targeting moiety. Some hydroxy groups in PG were oxidized to carboxy groups (DND-PG-COOH) to conjugate the active targeting moiety. Some hydroxy groups in DND-PG-COOH were then transformed to azide to conjugate 10 B12 H11 2- through click chemistry. The nanodrugs were evaluated in vitro using B16 murine melanoma cells in terms of cell viability, BNCT efficacy and cellular uptake. As a result, the 10 B12 H11 2- moiety is found to facilitate cellular uptake probably due to its negative charge. Upon thermal neutron irradiation, the nanodrugs with 10 B12 H11 2- moiety exhibited good anticancer efficacies with slight differences with and without targeting moiety.
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Affiliation(s)
- Masahiro Nishikawa
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, 606-8501, Kyoto, Japan
- Innovation and Business Development Headquarters, Daicel Corporation, 1239, Shinzaike, Aboshi-ku, 671-1283, Himeji, Hyogo, Japan
| | - Jie Yu
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, 606-8501, Kyoto, Japan
| | - Heon Gyu Kang
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, 606-8501, Kyoto, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010, Asashiro-nishi, Kumatori-cho, 590-0494, Sennan-gun, Osaka, Japan
| | - Naoki Komatsu
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, 606-8501, Kyoto, Japan
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12
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Igaki H, Nakamura S, Yamazaki N, Kaneda T, Takemori M, Kashihara T, Murakami N, Namikawa K, Nakaichi T, Okamoto H, Iijima K, Chiba T, Nakayama H, Nagao A, Sakuramachi M, Takahashi K, Inaba K, Okuma K, Nakayama Y, Shimada K, Nakagama H, Itami J. Acral cutaneous malignant melanoma treated with linear accelerator-based boron neutron capture therapy system: a case report of first patient. Front Oncol 2023; 13:1272507. [PMID: 37901311 PMCID: PMC10613025 DOI: 10.3389/fonc.2023.1272507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023] Open
Abstract
This study reports the first patient treatment for cutaneous malignant melanoma using a linear accelerator-based boron neutron capture therapy (BNCT) system. A single-center open-label phase I clinical trial had been conducted using the system since November 2019. A patient with a localized node-negative acral malignant melanoma and the largest diameter of the tumor ≤ 15 cm who refused primary surgery and chemotherapy was enrolled. After administering boronophenylalanine (BPA), a single treatment of BNCT with the maximum dose of 18 Gy-Eq delivered to the skin was performed. The safety and efficacy of the accelerator-based BNCT system for treating localized cutaneous malignant melanoma were evaluated. The first patient with cutaneous malignant melanoma in situ on the second finger of the left hand did not develop dose-limiting toxicity in the clinical trial. After BNCT, the treatment efficacy was gradually observed, and the patient achieved PR within 6 months and CR within 12 months. Moreover, during the follow-up period of 12 months after BNCT, the patient did not exhibit a recurrence without any treatment-related grade 2 or higher adverse events. Although grade 1 adverse events of dermatitis, dry skin, skin hyperpigmentation, edema, nausea, and aching pain were noted in the patient, those adverse events were relieved without any treatment. This case report shows that the accelerator-based BNCT may become a promising treatment modality for cutaneous malignant melanoma. We expect further clinical trials to reveal the efficacy and safety of the accelerator-based BNCT for cutaneous malignant melanoma.
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Affiliation(s)
- Hiroshi Igaki
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Satoshi Nakamura
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
- Medical Physics Laboratory, Division of Health Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Naoya Yamazaki
- Department of Dermatologic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Tomoya Kaneda
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Mihiro Takemori
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
| | - Tairo Kashihara
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Department of Radiation Oncology, Jutendo University School of Medicine, Tokyo, Japan
| | - Kenjiro Namikawa
- Department of Dermatologic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Tetsu Nakaichi
- Division of Research and Development for Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Tokyo, Japan
| | - Hiroyuki Okamoto
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
| | - Kotaro Iijima
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
- Department of Radiation Oncology, Jutendo University School of Medicine, Tokyo, Japan
| | - Takahito Chiba
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
- Department of Radiological Science, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Hiroki Nakayama
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, Japan
- Department of Radiological Science, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Ayaka Nagao
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Madoka Sakuramachi
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Kana Takahashi
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Koji Inaba
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Kae Okuma
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Yuko Nakayama
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | | | | | - Jun Itami
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
- Shin-Matsudo Accuracy Radiation Therapy Center, Shin-Matsudo Central General Hospital, Chiba, Japan
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13
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Terada S, Tsunetoh S, Tanaka Y, Tanaka T, Kashiwagi H, Takata T, Kawabata S, Suzuki M, Ohmichi M. Boron uptake of boronophenylalanine and the effect of boron neutron capture therapy in cervical cancer cells. Appl Radiat Isot 2023; 197:110792. [PMID: 37062147 DOI: 10.1016/j.apradiso.2023.110792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 06/13/2022] [Accepted: 03/26/2023] [Indexed: 04/05/2023]
Abstract
There are few studies about boron neutron capture therapy (BNCT) for cervical cancer. The present study evaluated the biodistribution of boronophenylalanine (BPA) and the effect of BNCT on cervical cancer cell lines. BPA exposure and neutron irradiation of cervical cancer cell lines resulted in decreased survival fraction compared to irradiation only. In vivo cervical cancer tumor boron concentration was highest at 2.5 h after BPA intraperitoneal administration, and higher than in the other organs. BNCT may be effective against cervical carcinoma.
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14
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Watanabe T, Sanada Y, Hattori Y, Suzuki M. Correlation between the expression of LAT1 in cancer cells and the potential efficacy of boron neutron capture therapy. JOURNAL OF RADIATION RESEARCH 2023; 64:91-98. [PMID: 36371738 PMCID: PMC9855323 DOI: 10.1093/jrr/rrac077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Boron neutron capture therapy (BNCT) is a binary cancer therapy that involves boron administration and neutron irradiation. The nuclear reaction caused by the interaction of boron atom and neutron produces heavy particles with highly cytocidal effects and destruct tumor cells, which uptake the boron drug. p-Boronophenylalanine (BPA), an amino acid derivative, is used in BNCT. Tumor cells with increased nutrient requirements take up more BPA than normal tissues via the enhanced expression of LAT1, an amino acid transporter. The current study aimed to assess the correlation between the expression of LAT1 and the uptake capacity of BPA using genetically modified LAT1-deficient/enhanced cell lines. We conducted an in vitro study, SCC7 tumor cells wherein LAT1 expression was altered using CRISPR/Cas9 were used to assess BPA uptake capacity. Data from The Cancer Genome Atlas (TCGA) were used to examine the expression status of LAT1 in human tumor tissues, the potential impact of LAT1 expression on cancer prognosis and the potential cancer indications for BPA-based BNCT. We discovered that the strength of LAT1 expression strongly affected the BPA uptake ability of tumor cells. Among the histologic types, squamous cell carcinomas express high levels of LAT1 regardless of the primary tumor site. The higher LAT1 expression in tumors was associated with a higher expression of cell proliferation markers and poorer patient prognosis. Considering that BPA concentrate more in tumors with high LAT1 expression, the results suggest that BNCT is effective for cancers having poor prognosis with higher proliferative potential and nutritional requirements.
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Affiliation(s)
- Tsubasa Watanabe
- Corresponding author. Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494 Japan. Tel: +81-72-451-2407; Fax: +81-72-451-2627;
| | | | - Yoshihide Hattori
- Research Center for Boron Neutron Capture Therapy, Osaka Metropolitan University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Osaka, Japan
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15
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C. STOCKERT JUAN, A. ROMERO SILVINA, N. FELIX-POZZI MARCELO, BL罿QUEZ-CASTRO ALFONSO. In vivo polymerization of the dopamine-borate melanin precursor: A proof-of-concept regarding boron neutron-capture therapy for melanoma. BIOCELL 2023. [DOI: 10.32604/biocell.2023.026631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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16
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Takemori M, Nakamura S, Sofue T, Ito M, Goka T, Miura Y, Iijima K, Chiba T, Nakayama H, Nakaichi T, Mikasa S, Takano Y, Kon M, Shuto Y, Urago Y, Nishitani M, Kashihara T, Takahashi K, Murakami N, Nishio T, Okamoto H, Chang W, Igaki H. Failure modes and effects analysis study for accelerator-based Boron Neutron Capture Therapy. Med Phys 2023; 50:424-439. [PMID: 36412161 DOI: 10.1002/mp.16104] [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: 05/17/2022] [Revised: 11/02/2022] [Accepted: 11/02/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Boron Neutron Capture Therapy (BNCT) has recently been used in clinical oncology thanks to recent developments of accelerator-based BNCT systems. Although there are some specific processes for BNCT, they have not yet been discussed in detail. PURPOSE The aim of this study is to provide comprehensive data on the risk of accelerator-based BNCT system to institutions planning to implement an accelerator-based BNCT system. METHODS In this study, failure mode and effects analysis (FMEA) was performed based on a treatment process map prepared for the accelerator-based BNCT system. A multidisciplinary team consisting of a medical doctor (MD), a registered nurse (RN), two medical physicists (MP), and three radiologic technologists (RT) identified the failure modes (FMs). Occurrence (O), severity (S), and detectability (D) were scored on a scale of 10, respectively. For each failure mode (FM), risk priority number (RPN) was calculated by multiplying the values of O, S, and D, and it was then categorized as high risk, very high risk, and other. Additionally, FMs were statistically compared in terms of countermeasures, associated occupations, and whether or not they were the patient-derived. RESULTS The identified FMs for BNCT were 165 in which 30 and 17 FMs were classified as high risk and very high risk, respectively. Additionally, 71 FMs were accelerator-based BNCT-specific FMs in which 18 and 5 FMs were classified as high risk and very high risk, respectively. The FMs for which countermeasures were "Education" or "Confirmation" were statistically significantly higher for S than the others (p = 0.019). As the number of BNCT facilities is expected to increase, staff education is even more important. Comparing patient-derived and other FMs, O tended to be higher in patient-derived FMs. This could be because the non-patient-derived FMs included events that could be controlled by software, whereas the patient-derived FMs were impossible to prevent and might also depend on the patient's condition. Alternatively, there were non-patient-derived FMs with higher D, which were difficult to detect mechanically and were classified as more than high risk. In O, significantly higher values (p = 0.096) were found for FMs from MD and RN associated with much patient intervention compared to FMs from MP and RT less patient intervention. Comparing conventional radiotherapy and accelerator-based BNCT, although there were events with comparable risk in same FMs, there were also events with different risk in same FMs. They could be related to differences in the physical characteristics of the two modalities. CONCLUSIONS This study is the first report for conducting a risk analysis for BNCT using FMEA. Thus, this study provides comprehensive data needed for quality assurance/quality control (QA/QC) in the treatment process for facilities considering the implementation of accelerator-based BNCT in the future. Because many BNCT-specific risks were discussed, it is important to understand the characteristics of BNCT and to take adequate measures in advance. If the effects of all FMs and countermeasures are discussed by multidisciplinary team, it will be possible to take countermeasures against individual FMs from many perspectives and provide BNCT more safely and effectively.
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Affiliation(s)
- Mihiro Takemori
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan.,Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan
| | - Satoshi Nakamura
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan.,Medical Physics Laboratory, Division of Health Science, Graduate School of Medicine, Osaka University, Suita city, Osaka, Japan
| | - Toshimitsu Sofue
- Department of Radiological Technology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Mikiko Ito
- Department of Nursing, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Tomonori Goka
- Department of Radiological Technology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yuki Miura
- Department of Radiological Technology, National Cancer Center Hospital East, Kashiwa-shi, Chiba, Japan
| | - Kotaro Iijima
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Takahito Chiba
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan
| | - Hiroki Nakayama
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan
| | - Tetsu Nakaichi
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Shohei Mikasa
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yuki Takano
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Mitsuhiro Kon
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Technology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yasunori Shuto
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Technology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Yuka Urago
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan
| | - Masato Nishitani
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.,Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan
| | - Tairo Kashihara
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Kana Takahashi
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Teiji Nishio
- Medical Physics Laboratory, Division of Health Science, Graduate School of Medicine, Osaka University, Suita city, Osaka, Japan
| | - Hiroyuki Okamoto
- Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
| | - Weishan Chang
- Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan
| | - Hiroshi Igaki
- Division of Boron Neutron Capture Therapy, National Cancer Center Exploratory Oncology Research & Clinical Trial Center, Chuo-ku, Tokyo, Japan.,Department of Radiation Oncology, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
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17
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Molecular Events in the Melanogenesis Cascade as Novel Melanoma-Targeted Small Molecules: Principle and Development. Cancers (Basel) 2022; 14:cancers14225588. [PMID: 36428680 PMCID: PMC9688330 DOI: 10.3390/cancers14225588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Malignant melanoma is one of the most malignant of all cancers. Melanoma occurs at the epidermo-dermal interface of the skin and mucosa, where small vessels and lymphatics are abundant. Consequently, from the onset of the disease, melanoma easily metastasizes to other organs throughout the body via lymphatic and blood circulation. At present, the most effective treatment method is surgical resection, and other attempted methods, such as chemotherapy, radiotherapy, immunotherapy, targeted therapy, and gene therapy, have not yet produced sufficient results. Since melanogenesis is a unique biochemical pathway that functions only in melanocytes and their neoplastic counterparts, melanoma cells, the development of drugs that target melanogenesis is a promising area of research. Melanin consists of small-molecule derivatives that are always synthesized by melanoma cells. Amelanosis reflects the macroscopic visibility of color changes (hypomelanosis). Under microscopy, melanin pigments and their precursors are present in amelanotic melanoma cells. Tumors can be easily targeted by small molecules that chemically mimic melanogenic substrates. In addition, small-molecule melanin metabolites are toxic to melanocytes and melanoma cells and can kill them. This review describes our development of chemo-thermo-immunotherapy based on the synthesis of melanogenesis-based small-molecule derivatives and conjugation to magnetite nanoparticles. We also introduce the other melanogenesis-related chemotherapy and thermal medicine approaches and discuss currently introduced targeted therapies with immune checkpoint inhibitors for unresectable/metastatic melanoma.
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18
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Cheng X, Li F, Liang L. Boron Neutron Capture Therapy: Clinical Application and Research Progress. Curr Oncol 2022; 29:7868-7886. [PMID: 36290899 PMCID: PMC9601095 DOI: 10.3390/curroncol29100622] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/05/2022] Open
Abstract
Boron neutron capture therapy (BNCT) is a binary modality that is used to treat a variety of malignancies, using neutrons to irradiate boron-10 (10B) nuclei that have entered tumor cells to produce highly linear energy transfer (LET) alpha particles and recoil 7Li nuclei (10B [n, α] 7Li). Therefore, the most important part in BNCT is to selectively deliver a large number of 10B to tumor cells and only a small amount to normal tissue. So far, BNCT has been used in more than 2000 cases worldwide, and the efficacy of BNCT in the treatment of head and neck cancer, malignant meningioma, melanoma and hepatocellular carcinoma has been confirmed. We collected and collated clinical studies of second-generation boron delivery agents. The combination of different drugs, the mode of administration, and the combination of multiple treatments have an important impact on patient survival. We summarized the critical issues that must be addressed, with the hope that the next generation of boron delivery agents will overcome these challenges.
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Affiliation(s)
- Xiang Cheng
- Oncology Department, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei Economic and Technological Development Zone, Hefei 230601, China
| | - Fanfan Li
- Oncology Department, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei Economic and Technological Development Zone, Hefei 230601, China
- Correspondence: (F.L.); (L.L.); Tel.: +86-13855137365 (F.L.); +86-15905602477 (L.L.)
| | - Lizhen Liang
- Hefei Comprehensive National Science Center, Institute of Energy, Building 9, Binhu Excellence City Phase I, 16 Huayuan Avenue, Baohe District, Hefei 230031, China
- Correspondence: (F.L.); (L.L.); Tel.: +86-13855137365 (F.L.); +86-15905602477 (L.L.)
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Kondo N, Masutani M, Imamichi S, Matsumoto Y, Nakai K. Strategies for Preclinical Studies Evaluating the Biological Effects of an Accelerator-Based Boron Neutron Capture Therapy System. Cancer Biother Radiopharm 2022; 38:173-183. [PMID: 36154293 DOI: 10.1089/cbr.2022.0057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This review discusses the strategies of preclinical studies intended for accelerator-based (AB)-boron neutron capture therapy (BNCT) clinical trials, which were presented at the National Cancer Institute (NCI) Workshop on Neutron Capture Therapy held from April 20 to 22, 2022. Clinical studies of BNCT have been conducted worldwide using reactor neutron sources, with most targeting malignant brain tumors, melanoma, or head and neck cancer. Recently, small accelerator-based neutron sources that can be installed in hospitals have been developed. AB-BNCT clinical trials for recurrent malignant glioma, head and neck cancers, high-grade meningioma, melanoma, and angiosarcoma have all been conducted in Japan. The necessary methods, equipment, and facilities for preclinical studies to evaluate the biological effects of AB-BNCT systems in terms of safety and efficacy are described, with reference to two examples from Japan. The first is the National Cancer Center, which is equipped with a vertical downward neutron beam, and the other is the University of Tsukuba, which has a horizontal neutron beam. The preclinical studies discussed include cell-based assays to evaluate cytotoxicity and genotoxicity, in vivo cytotoxicity and efficacy of BNCT, and radioactivation measurements.
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Affiliation(s)
- Natsuko Kondo
- Particle Radiation Oncology Center, Institute for Integrated Radiation and Nuclear Science, Kyoto University, Asashiro-Nishi, Osaka, Japan
| | - Mitsuko Masutani
- Department of Molecular and Genomic Biomedicine School of Medicine, Center for Bioinformatics and Molecular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Central Radioisotope Division, National Cancer Center Research Institute, Tokyo, Japan.,Division of BNCT, EPOC, National Cancer Center, Tokyo, Japan
| | - Shoji Imamichi
- Department of Molecular and Genomic Biomedicine School of Medicine, Center for Bioinformatics and Molecular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Central Radioisotope Division, National Cancer Center Research Institute, Tokyo, Japan.,Division of BNCT, EPOC, National Cancer Center, Tokyo, Japan
| | - Yoshitaka Matsumoto
- Department of Radiation Oncology, Proton Medical Research Center, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Kei Nakai
- Department of Radiation Oncology, Proton Medical Research Center, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
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20
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Seneviratne D, Advani P, Trifiletti DM, Chumsri S, Beltran CJ, Bush AF, Vallow LA. Exploring the Biological and Physical Basis of Boron Neutron Capture Therapy (BNCT) as a Promising Treatment Frontier in Breast Cancer. Cancers (Basel) 2022; 14:cancers14123009. [PMID: 35740674 PMCID: PMC9221373 DOI: 10.3390/cancers14123009] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/30/2022] [Accepted: 06/07/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary BNCT is a biologically targeted, densely ionizing form of radiation therapy that allows for increased tumor cell kill, while reducing toxicity to surrounding normal tissues. Although BNCT has been investigated in the treatment of head and neck cancers and recurrent brain tumors, its applicability to breast cancer has not been previoulsy investigated. In this review we discuss the physical and biological properties of various boronated compounds, and advantages and challenges associated with the potential use of BNCT in the treatment of breast cancer. Abstract BNCT is a high LET radiation therapy modality that allows for biologically targeted radiation delivery to tumors while reducing normal tissue impacts. Although the clinical use of BNCT has largely been limited to phase I/II trials and has primarily focused on difficult-to-treat malignancies such as recurrent head and neck cancer and recurrent gliomas, recently there has been a renewed interest in expanding the use of BNCT to other disease sites, including breast cancer. Given its high LET characteristics, its biologically targeted and tumor specific nature, as well as its potential for use in complex treatment settings including reirradiation and widespread metastatic disease, BNCT offers several unique advantages over traditional external beam radiation therapy. The two main boron compounds investigated to date in BNCT clinical trials are BSH and BPA. Of these, BPA in particular shows promise in breast cancer given that is taken up by the LAT-1 amino acid transporter that is highly overexpressed in breast cancer cells. As the efficacy of BNCT is directly dependent on the extent of boron accumulation in tumors, extensive preclinical efforts to develop novel boron delivery agents have been undertaken in recent years. Preclinical studies have shown promise in antibody linked boron compounds targeting ER/HER2 receptors, boron encapsulating liposomes, and nanoparticle-based boron delivery systems. This review aims to summarize the physical and biological basis of BNCT, the preclinical and limited clinical data available to date, and discuss its potential to be utilized for the successful treatment of various breast cancer disease states.
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Affiliation(s)
- Danushka Seneviratne
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA; (D.S.); (D.M.T.); (C.J.B.); (A.F.B.); (L.A.V.)
| | - Pooja Advani
- Department of Hematology Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA;
- Correspondence:
| | - Daniel M. Trifiletti
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA; (D.S.); (D.M.T.); (C.J.B.); (A.F.B.); (L.A.V.)
| | - Saranya Chumsri
- Department of Hematology Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA;
| | - Chris J. Beltran
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA; (D.S.); (D.M.T.); (C.J.B.); (A.F.B.); (L.A.V.)
| | - Aaron F. Bush
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA; (D.S.); (D.M.T.); (C.J.B.); (A.F.B.); (L.A.V.)
| | - Laura A. Vallow
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL 32224, USA; (D.S.); (D.M.T.); (C.J.B.); (A.F.B.); (L.A.V.)
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21
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Wang S, Zhang Z, Miao L, Li Y. Boron Neutron Capture Therapy: Current Status and Challenges. Front Oncol 2022; 12:788770. [PMID: 35433432 PMCID: PMC9009440 DOI: 10.3389/fonc.2022.788770] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 03/04/2022] [Indexed: 11/13/2022] Open
Abstract
Boron neutron capture therapy (BNCT) is a re-emerging therapy with the ability to selectively kill tumor cells. After the boron delivery agents enter the tumor tissue and enrich the tumor cells, the thermal neutrons trigger the fission of the boron atoms, leading to the release of boron atoms and then leading to the release of the α particles (4He) and recoil lithium particles (7Li), along with the production of large amounts of energy in the narrow region. With the advantages of targeted therapy and low toxicity, BNCT has become a unique method in the field of radiotherapy. Since the beginning of the last century, BNCT has been emerging worldwide and gradually developed into a technology for the treatment of glioblastoma multiforme, head and neck cancer, malignant melanoma, and other cancers. At present, how to develop and innovate more efficient boron delivery agents and establish a more accurate boron-dose measurement system have become the problem faced by the development of BNCT. We discuss the use of boron delivery agents over the past several decades and the corresponding clinical trials and preclinical outcomes. Furthermore, the discussion brings recommendations on the future of boron delivery agents and this therapy.
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Affiliation(s)
- Song Wang
- Department of General Surgery, Second Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory of the Digestive System Tumors of Gansu Province, Second Hospital of Lanzhou University, Lanzhou, China
| | - Zhengchao Zhang
- Department of General Surgery, Second Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory of the Digestive System Tumors of Gansu Province, Second Hospital of Lanzhou University, Lanzhou, China
| | - Lele Miao
- Department of General Surgery, Second Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory of the Digestive System Tumors of Gansu Province, Second Hospital of Lanzhou University, Lanzhou, China
| | - Yumin Li
- Department of General Surgery, Second Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory of the Digestive System Tumors of Gansu Province, Second Hospital of Lanzhou University, Lanzhou, China
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22
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Self-Assembled Monolayer of Monomercaptoundecahydro-closo-dodecaborate on a Polycrystalline Gold Surface. Molecules 2022; 27:molecules27082496. [PMID: 35458692 PMCID: PMC9026543 DOI: 10.3390/molecules27082496] [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: 02/05/2022] [Revised: 03/24/2022] [Accepted: 04/05/2022] [Indexed: 11/25/2022] Open
Abstract
In this work, we present an electrochemical study of the boron cage monomercaptoundecahydro-closo-dodecaborate [B12H11SH]2− in solution and in a self-assembled monolayer over a polycrystalline gold electrode. Cyclic voltammetry of the anion [B12H11SH]2− in solution showed a shift in the peak potentials related to the redox processes of gold hydroxides, which evidences the interaction between the boron cage and the gold surface. For an Au electrode modified with the anion [B12H11SH]2−, cyclic voltammetry response of the probe Fe(CN)63−/Fe(CN)64− showed a ΔEp value typical for a surface modification. Electrochemical impedance spectroscopy presented Rtc and Cdl values related to the formation of a self-assembled monolayer (SAM). A comparison of electrochemical responses of a modified electrode with thioglycolic acid (TGA) reveals that the boron cage [B12H11SH]2− diminishes the actives sites over the Au surface due to the steric effects. Differential capacitance measurements for bare gold electrode and those modified with [B12H11SH]2− and (TGA), indicate that bulky thiols enhance charge accumulation at the electrode–solution interface. In addition to electrochemical experiments, DFT calculations and surface plasmon resonance measurements (SPR) were carried out to obtain quantum chemical descriptors and to evaluate the molecular length and the dielectric constant of the Boron cage. From SPR experiments, the adsorption kinetics of [B12H11SH]2− were studied. The data fit for a Langmuir kinetic equation, typical for the formation of a monolayer.
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23
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Compassionate Treatment of Brainstem Tumors with Boron Neutron Capture Therapy: A Case Series. Life (Basel) 2022; 12:life12040566. [PMID: 35455057 PMCID: PMC9025803 DOI: 10.3390/life12040566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/02/2022] [Accepted: 04/07/2022] [Indexed: 01/01/2023] Open
Abstract
Brainstem tumors are heterogenous and cancerous glioma tumors arising from the midbrain, pons, and the medulla that are relatively common in children, accounting for 10% to 20% of all pediatric brain tumors. However, the prognosis of aggressive brainstem gliomas remains extremely poor despite aggressive treatment with chemotherapy and radiotherapy. That means there are many life-threatening patients who have exhausted all available treatment options and are beginning to face end-of-life stage. Therefore, the unique properties of highly selective heavy particle irradiation with boron neutron capture therapy (BNCT) may be well suited to prolong the lives of patients with end-stage brainstem gliomas. Herein, we report a case series of life-threatening patients with end-stage brainstem glioma who eligible for Emergency and Compassionate Use, in whom we performed a scheduled two fractions of salvage BNCT strategy with low treatment dosage each time. No patients experienced acute or late adverse events related to BNCT. There were 3 patients who relapsed after two fractionated BNCT treatment, characterized by younger age, lower T/N ratio, and receiving lower treatment dose. Therefore, two fractionated low-dose BNCT may be a promising treatment for end-stage brainstem tumors. For younger patients with low T/N ratios, more fractionated low-dose BNCT should be considered.
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24
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Zheng L, Chen K, Wu M, Zheng C, Liao Q, Wei X, Wang C, Zhao Y. 用于硼中子俘获治疗的含硼药物研究现状与热点前沿:基于文献计量的分析与思考. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2022-0268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Takahara K, Miyatake SI, Azuma H, Shiroki R. Boron neutron capture therapy for urological cancers. Int J Urol 2022; 29:610-616. [PMID: 35240726 DOI: 10.1111/iju.14855] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 02/21/2022] [Indexed: 01/18/2023]
Abstract
Boron neutron capture therapy is based on a nuclear reaction between the nonradioactive isotope boron-10 and either low-energy thermal neutrons or high-energy epithermal neutrons, which generate high linear energy transfer α particles and a recoiled lithium nucleus (7 Li) that selectively destroys the DNA helix in tumor cells. Boron neutron capture therapy is an emerging procedure aimed at improving the therapeutic ratio for the traditional treatment of various malignancies, which has been studied clinically in a variety of diseases, including glioblastoma, head and neck cancer, cutaneous melanoma, hepatocellular carcinoma, lung cancer, and extramammary Paget's disease. However, boron neutron capture therapy has not been clinically performed for urological cancers, excluding genital extramammary Paget's disease that appeared at the scrotum to penis area. In this review, we aimed to provide an updated summary of the current clinical literature of patients treated with boron neutron capture therapy and to focus on the future prospects of boron neutron capture therapy for urological cancers.
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Affiliation(s)
- Kiyoshi Takahara
- Department of Urology, School of Medicine, Fujita Health University, Aichi, Japan
| | - Shin-Ichi Miyatake
- Kansai BNCT Medical Center, Osaka Medical and Pharmaceutical University, Takatsuki, Japan.,Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Haruhito Azuma
- Department of Urology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Ryoichi Shiroki
- Department of Urology, School of Medicine, Fujita Health University, Aichi, Japan
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26
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Igaki H, Murakami N, Nakamura S, Yamazaki N, Kashihara T, Takahashi A, Namikawa K, Takemori M, Okamoto H, Iijima K, Chiba T, Nakayama H, Takahashi A, Kaneda T, Takahashi K, Inaba K, Okuma K, Nakayama Y, Shimada K, Nakagama H, Itami J. Scalp angiosarcoma treated with linear accelerator-based boron neutron capture therapy: A report of two patients. Clin Transl Radiat Oncol 2022; 33:128-133. [PMID: 35252597 PMCID: PMC8892501 DOI: 10.1016/j.ctro.2022.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 11/24/2022] Open
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27
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Shiba S, Watanabe T, Kaminuma T, Miyamoto E, Kawashima M, Irie D, Ando K, Ohno T. Locally advanced breast cancer involving the skin surface treated with radiotherapy using a hydrogen peroxide solution-soaked gauze bolus: a case report. Adv Radiat Oncol 2022; 7:100894. [PMID: 35265780 PMCID: PMC8899227 DOI: 10.1016/j.adro.2022.100894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/06/2022] [Indexed: 10/29/2022] Open
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28
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Borzillo V, Muto P. Radiotherapy in the Treatment of Subcutaneous Melanoma. Cancers (Basel) 2021; 13:cancers13225859. [PMID: 34831017 PMCID: PMC8616425 DOI: 10.3390/cancers13225859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 11/06/2022] Open
Abstract
Simple Summary The non-surgical treatment of cutaneous and/or subcutaneous melanoma lesions involves a multitude of local treatments, including radiotherapy. This is often used when other local methods fail, and there are currently no clear guidelines or evidence-based recommendations to support its use in this setting. This review, collecting the retrospective and prospective experiences on radiotherapy alone or in combination with other methods, aims to provide a scenario of the possible advantages and disadvantages related to its use in the treatment of skin/subcutaneous melanoma lesions. Abstract Malignant melanoma frequently develops cutaneous and/or subcutaneous metastases during the course of the disease. These may present as non-nodal locoregional metastases (microsatellite, satellite, or in-transit) included in stage III or as distant metastases in stage IV. Their presentation is heterogeneous and associated with significant morbidity resulting from both disease-related functional damage and treatment side effects. The standard treatment is surgical excision, whereas local therapies or systemic therapies have a role when surgery is not indicated. Radiotherapy can be used in the local management of ITM, subcutaneous relapses, or distant metastases to provide symptom relief and prolong regional disease control. To increase the local response without increasing toxicity, the addition of hyperthermia and intralesional therapies to radiotherapy appear to be very promising. Boron neutron capture therapy, based on nuclear neutron capture and boron isotope fission reaction, could be an alternative to standard treatments, but its use in clinical practice is still limited. The potential benefit of combining radiotherapy with targeted therapies and immunotherapy has yet to be explored in this lesion setting. This review explores the role of radiotherapy in the treatment of cutaneous and subcutaneous lesions, its impact on outcomes, and its association with other treatment modalities.
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29
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He H, Li J, Jiang P, Tian S, Wang H, Fan R, Liu J, Yang Y, Liu Z, Wang J. The basis and advances in clinical application of boron neutron capture therapy. Radiat Oncol 2021; 16:216. [PMID: 34743756 PMCID: PMC8573925 DOI: 10.1186/s13014-021-01939-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/25/2021] [Indexed: 12/31/2022] Open
Abstract
Boron neutron capture therapy (BNCT) was first proposed as early as 1936, and research on BNCT has progressed relatively slowly but steadily. BNCT is a potentially useful tool for cancer treatment that selectively damages cancer cells while sparing normal tissue. BNCT is based on the nuclear reaction that occurs when 10B capture low-energy thermal neutrons to yield high-linear energy transfer (LET) α particles and recoiling 7Li nuclei. A large number of 10B atoms have to be localized within the tumor cells for BNCT to be effective, and an adequate number of thermal neutrons need to be absorbed by the 10B atoms to generate lethal 10B (n, α)7Li reactions. Effective boron neutron capture therapy cannot be achieved without appropriate boron carriers. Improvement in boron delivery and the development of the best dosing paradigms for both boronophenylalanine (BPA) and sodium borocaptate (BSH) are of major importance, yet these still have not been optimized. Here, we present a review of this treatment modality from the perspectives of radiation oncology, biology, and physics. This manuscript provides a brief introduction of the mechanism of cancer-cell-selective killing by BNCT, radiobiological factors, and progress in the development of boron carriers and neutron sources as well as the results of clinical study.
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Affiliation(s)
- Huifang He
- Department of Radiotherapy, Peking University International Hospital, Beijing, China
| | - Jiyuan Li
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Ping Jiang
- Department of Radiotherapy, Peking University 3rd Hospital, Beijing, 100191, China
| | - Suqing Tian
- Department of Radiotherapy, Peking University 3rd Hospital, Beijing, 100191, China
| | - Hao Wang
- Department of Radiotherapy, Peking University 3rd Hospital, Beijing, 100191, China
| | - Ruitai Fan
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Junqi Liu
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuyan Yang
- Department of Radiotherapy, Peking University International Hospital, Beijing, China
| | - Zhibo Liu
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
| | - Junjie Wang
- Department of Radiotherapy, Peking University 3rd Hospital, Beijing, 100191, China.
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30
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Response of Normal Tissues to Boron Neutron Capture Therapy (BNCT) with 10B-Borocaptate Sodium (BSH) and 10B-Paraboronophenylalanine (BPA). Cells 2021; 10:cells10112883. [PMID: 34831105 PMCID: PMC8616460 DOI: 10.3390/cells10112883] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 02/07/2023] Open
Abstract
Boron neutron capture therapy (BNCT) is a cancer-selective radiotherapy that utilizes the cancer targeting 10B-compound. Cancer cells that take up the compound are substantially damaged by the high liner energy transfer (LET) particles emitted mainly from the 10B(n, α7Li reaction. BNCT can minimize the dose to normal tissues, but it must be performed within the tolerable range of normal tissues. Therefore, it is important to evaluate the response of normal tissues to BNCT. Since BNCT yields a mixture of high and low LET radiations that make it difficult to understand the radiobiological basis of BNCT, it is important to evaluate the relative biological effectiveness (RBE) and compound biological effectiveness (CBE) factors for assessing the responses of normal tissues to BNCT. BSH and BPA are the only 10B-compounds that can be used for clinical BNCT. Their biological behavior and cancer targeting mechanisms are different; therefore, they affect the CBE values differently. In this review, we present the RBE and CBE values of BPA or BSH for normal tissue damage by BNCT irradiation. The skin, brain (spinal cord), mucosa, lung, and liver are included as normal tissues. The CBE values of BPA and BSH for tumor control are also discussed.
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31
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Fukuda H. Boron Neutron Capture Therapy (BNCT) for Cutaneous Malignant Melanoma Using 10B-p-Boronophenylalanine (BPA) with Special Reference to the Radiobiological Basis and Clinical Results. Cells 2021; 10:2881. [PMID: 34831103 PMCID: PMC8616259 DOI: 10.3390/cells10112881] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 01/22/2023] Open
Abstract
BNCT is a radiotherapeutic method for cancer treatment that uses tumor-targeting 10B-compounds. BNCT for cutaneous melanoma using BPA, a phenylalanine derivative, was first initiated by Mishima et al. in 1987. This article reviews the radiobiological basis of melanoma control and damage to normal tissues as well as the results of clinical studies. Experimental studies showed that the compound biological effectiveness (CBE) values of the 10B (n, α)7Li reaction for melanoma control ranged from 2.5 to 3.3. The CBE values of the 10B (n, α)7Li reaction for skin damage ranged from 2.4 to 3.7 with moist desquamation as the endpoint. The required single radiation dose for controlling human melanoma was estimated to be 25 Gy-Eq or more by analyzing the 50% tumor control dose data of conventional fractionated radiotherapy. From the literature, the maximum permissible dose to human skin by single irradiation was estimated to be 18 Gy-Eq. With respect to the pharmacokinetics of BPA in patients with melanoma treated with 85-350 mg/kg BPA, the melanoma-to-blood ratio ranged from 2.1-3.8 and the skin-to-blood ratio was 1.31 ± 0.22. Good local tumor control and long-term survival of the patients were achieved in two clinical trials of BNCT conducted in Japan.
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Affiliation(s)
- Hiroshi Fukuda
- Department of Radiology, Tohoku Medical and Pharmaceutical University, Sendai 983-8536, Japan
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32
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Wróblewska A, Szermer-Olearnik B, Pajtasz-Piasecka E. Nanocząstki o wysokiej zawartości boru
jako potencjalne nośniki w terapii
borowo-neutronowej. POSTEP HIG MED DOSW 2021. [DOI: 10.5604/01.3001.0014.7760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Podstawą terapii borowo-neutronowej (boron neutron capture therapy, BNCT) jest selektywne
dostarczenie boru do komórek nowotworowych, a następnie napromienienie zmienionego
chorobowo miejsca wiązką neutronów. W wyniku tego procesu dochodzi do rozszczepienia
jądra izotopu 10B, co powoduje uwolnienie energii niszczącej komórki nowotworowe.
Mimo że badania związane z BNCT trwają od lat 50. XX wieku, pozostaje ona wciąż terapią
eksperymentalną. Jest to związane m.in. z brakiem nośników umożliwiających szybkie i skuteczne
wprowadzanie 10B do środowiska nowotworu. Tak więc często podnoszonym zagadnieniem
i jednym z głównych wyzwań dla rozwoju BNCT, jest poszukiwanie selektywnych
związków dostarczających wymaganą ilość tego pierwiastka. Istotnym aspektem są badania
nad nanometrycznymi strukturami, takimi jak liposomy zawierające związki bogate w bor
lub nieorganiczne nanocząstki – węglik boru czy azotek boru. Ze względu na dużą zawartość
boru oraz możliwość modyfikacji powierzchni tych nanocząstek, mogą się one okazać
wyjątkowo atrakcyjnym narzędziem w celowanej BNCT. Równie ważnym problemem tej terapii
jest opracowanie precyzyjnych powiązań między źródłem neutronów, specyfiką wiązki
a rodzajem zastosowanego nośnika. W artykule wskazujemy na wysoki potencjał związków
bogatych w bor jako nośników w celowanej terapii borowo-neutronowej.
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Affiliation(s)
- Anna Wróblewska
- Instytut Immunologii i Terapii Doświadczalnej im. Ludwika Hirszfelda Polskiej Akademii Nauk we Wrocławiu
| | - Bożena Szermer-Olearnik
- Instytut Immunologii i Terapii Doświadczalnej im. Ludwika Hirszfelda Polskiej Akademii Nauk we Wrocławiu
| | - Elżbieta Pajtasz-Piasecka
- Instytut Immunologii i Terapii Doświadczalnej im. Ludwika Hirszfelda Polskiej Akademii Nauk we Wrocławiu
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