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Postuma I, Magni C, Marcaccio B, Fatemi S, Vercesi V, Ciocca M, Magro G, Orlandi E, Vischioni B, Ronchi S, Liu YH, Han Y, Geng C, González SJ, Bortolussi S. Using the photon isoeffective dose formalism to compare and combine BNCT and CIRT in a head and neck tumour. Sci Rep 2024; 14:418. [PMID: 38172585 PMCID: PMC10764928 DOI: 10.1038/s41598-023-50522-5] [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: 04/22/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024] Open
Abstract
Boron Neutron Capture Therapy (BNCT) is a radiotherapy technique based on the enrichment of tumour cells with suitable 10-boron concentration and on subsequent neutron irradiation. Low-energy neutron irradiation produces a localized deposition of radiation dose caused by boron neutron capture reactions. Boron is vehiculated into tumour cells via proper borated formulations, able to accumulate in the malignancy more than in normal tissues. The neutron capture releases two high-LET charged particles (i.e., an alpha particle and a lithium ion), losing their energy in a distance comparable to the average dimension of one cell. Thus BNCT is selective at the cell level and characterized by high biological effectiveness. As the radiation field is due to the interaction of neutrons with the components of biological tissues and with boron, the dosimetry requires a formalism to express the absorbed dose into photon-equivalent units. This work analyzes a clinical case of an adenoid cystic carcinoma treated with carbon-ion radiotherapy (CIRT), located close to optic nerve and deep-seated as a practical example of how to apply the formalism of BNCT photon isoeffective dose and how to evaluate the BNCT dose distribution against CIRT. The example allows presenting different dosimetrical and radiobiological quantities and drawing conclusions on the potential of BNCT stemming on the clinical result of the CIRT. The patient received CIRT with a dose constraint on the optic nerve, affecting the peripheral part of the Planning Target Volume (PTV). After the treatment, the tumour recurred in this low-dose region. BNCT was simulated for the primary tumour, with the goal to calculate the dose distribution in isoeffective units and a Tumour Control Probability (TCP) to be compared with the one of the original treatment. BNCT was then evaluated for the recurrence in the underdosed region which was not optimally covered by charged particles due to the proximity of the optic nerve. Finally, a combined treatment consisting in BNCT and carbon ion therapy was considered to show the consistency and the potential of the model. For the primary tumour, the photon isoeffective dose distribution due to BNCT was evaluated and the resulted TCP was higher than that obtained for the CIRT. The formalism produced values that are consistent with those of carbon-ion. For the recurrence, BNCT dosimetry produces a similar TCP than that of primary tumour. A combined treatment was finally simulated, showing a TCP comparable to the BNCT-alone with overall dosimetric advantage in the most peripheral parts of the treatment volume. Isoeffective dose formalism is a robust tool to analyze BNCT dosimetry and to compare it with the photon-equivalent dose calculated for carbon-ion treatment. This study introduces for the first time the possibility to combine the dosimetry obtained by two different treatment modalities, showing the potential of exploiting the cellular targeting of BNCT combined with the precision of charged particles in delivering an homogeneous dose distribution in deep-seated tumours.
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Affiliation(s)
- Ian Postuma
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
| | - Chiara Magni
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
- Department of Physics, University of Pavia, Pavia, 27100, Italy
| | - Barbara Marcaccio
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
- Department of Physics, University of Pavia, Pavia, 27100, Italy
- National University of San Martín, Dan Beninson Institute, Buenos Aires, Argentina
| | - Setareh Fatemi
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
| | - Valerio Vercesi
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
| | - Mario Ciocca
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy
- National Centre for Oncological Hadrontherapy, CNAO, Pavia, 27100, Italy
| | - Giuseppe Magro
- National Centre for Oncological Hadrontherapy, CNAO, Pavia, 27100, Italy
| | - Ester Orlandi
- National Centre for Oncological Hadrontherapy, CNAO, Pavia, 27100, Italy
| | - Barbara Vischioni
- National Centre for Oncological Hadrontherapy, CNAO, Pavia, 27100, Italy
| | - Sara Ronchi
- National Centre for Oncological Hadrontherapy, CNAO, Pavia, 27100, Italy
| | - Yuan-Hao Liu
- Neuboron Medtech Ltd, Nanjing, China
- Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, NUAA, Nanjing, China
| | - Yang Han
- Department of Physics, University of Pavia, Pavia, 27100, Italy
- Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, NUAA, Nanjing, China
| | - Changran Geng
- Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, NUAA, Nanjing, China
| | - Sara Josefina González
- National University of San Martín, Dan Beninson Institute, Buenos Aires, Argentina
- National Atomic Energy Commission, CNEA, Buenos Aires, Argentina
- National Scientific and Technical Research Council, CONICET, Buenos Aires, Argentina
| | - Silva Bortolussi
- National Institute of Nuclear Physics, INFN, Unit of Pavia, Pavia, 27100, Italy.
- Department of Physics, University of Pavia, Pavia, 27100, Italy.
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Portu AM, Espain MS, Thorp SI, Trivillin VA, Curotto P, Monti Hughes A, Pozzi ECC, Garabalino MA, Palmieri MA, Granell PN, Golmar F, Schwint AE, Saint Martin G. Enhanced Resolution of Neutron Autoradiography with UV-C Sensitization to Study Boron Microdistribution in Animal Models. Life (Basel) 2023; 13:1578. [PMID: 37511953 PMCID: PMC10381447 DOI: 10.3390/life13071578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
The assessment of boron microdistribution is essential to evaluate the suitability of boron neutron capture therapy (BNCT) in different biological models. In our laboratory, we have reported a methodology to produce cell imprints on polycarbonate through UV-C sensitization. The aim of this work is to extend the technique to tissue samples in order to enhance spatial resolution. As tissue structure largely differs from cultured cells, several aspects must be considered. We studied the influence of the parameters involved in the imprint and nuclear track formation, such as neutron fluence, different NTDs, etching and UV-C exposure times, tissue absorbance, thickness, and staining, among others. Samples from different biological models of interest for BNCT were used, exhibiting homogeneous and heterogeneous histology and boron microdistribution. The optimal conditions will depend on the animal model under study and the resolution requirements. Both the imprint sharpness and the fading effect depend on tissue thickness. While 6 h of UV-C was necessary to yield an imprint in CR-39, only 5 min was enough to observe clear imprints on Lexan. The information related to microdistribution of boron obtained with neutron autoradiography is of great relevance when assessing new boron compounds and administration protocols and also contributes to the study of the radiobiology of BNCT.
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Affiliation(s)
- Agustina Mariana Portu
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
- School of Science & Technology, National University of San Martín (UNSAM), San Martín B1650JKA, Argentina
| | - María Sol Espain
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
- School of Science & Technology, National University of San Martín (UNSAM), San Martín B1650JKA, Argentina
| | - Silvia Inés Thorp
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | - Verónica Andrea Trivillin
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | - Paula Curotto
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
| | - Andrea Monti Hughes
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | | | | | - Mónica Alejandra Palmieri
- Department of Biodiversity and Experimental Biology, Faculty of Exact and Natural Sciences, University of Buenos Aires (UBA), Ciudad Autónoma de Buenos Aires C1428EGA, Argentina
| | - Pablo Nicolás Granell
- Micro and Nanotechnology Centre of the Bicentennial (CNMB), National Institute of Industrial Technology (INTI), San Martín B1650JKA, Argentina
| | - Federico Golmar
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
- School of Science & Technology, National University of San Martín (UNSAM), San Martín B1650JKA, Argentina
- Micro and Nanotechnology Centre of the Bicentennial (CNMB), National Institute of Industrial Technology (INTI), San Martín B1650JKA, Argentina
| | - Amanda Elena Schwint
- National Atomic Energy Commission (CNEA), San Martín C1429BNP, Argentina
- National Scientific and Technological Research Council (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
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3
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Frydryk Benitez DN, Palmieri MA, Langle YV, Monti Hughes A, Pozzi ECC, Thorp SI, Garabalino MA, Curotto P, Ramos PS, Paparella ML, Polti L, Eiján A, Schwint AE, Trivillin VA. Therapeutic Efficacy, Radiotoxicity and Abscopal Effect of BNCT at the RA-3 Nuclear Reactor Employing Oligo-Fucoidan and Glutamine as Adjuvants in an Ectopic Colon Cancer Model in Rats. Life (Basel) 2023; 13:1538. [PMID: 37511913 PMCID: PMC10381875 DOI: 10.3390/life13071538] [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: 05/18/2023] [Revised: 06/16/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Boron neutron capture therapy (BNCT) is based on the preferential uptake of 10B compounds by tumors, followed by neutron irradiation. The aim of this study was to assess, in an ectopic colon cancer model, the therapeutic efficacy, radiotoxicity, abscopal effect and systemic immune response associated with (BPA/Borophenylalanine+GB-10/Decahydrodecaborate)-BNCT (Comb-BNCT) alone or in combination with Oligo-Fucoidan (O-Fuco) or Glutamine (GLN), compared to the "standard" BPA-BNCT protocol usually employed in clinical trials. All treatments were carried out at the RA-3 nuclear reactor. Boron biodistribution studies showed therapeutic values above 20 ppm 10B in tumors. At 7 weeks post-treatment, the ratio of tumor volume post-/pre-BNCT was significantly smaller for all BNCT groups vs. SHAM (p < 0.05). The parameter "incidence of tumors that underwent a reduction to ≤50% of initial tumor volume" exhibited values of 62% for Comb-BNCT alone, 82% for Comb-BNCT+GLN, 73% for Comb-BNCT+O-Fuco and only 30% for BPA-BNCT. For BPA-BNCT, the incidence of severe dermatitis was 100%, whereas it was significantly below 70% (p ≤ 0.05) for Comb-BNCT, Comb-BNCT+O-Fuco and Comb-BNCT+GLN. Considering tumors outside the treatment area, 77% of Comb-BNCT animals had a tumor volume lower than 50 mm3 vs. 30% for SHAM (p ≤ 0.005), suggesting an abscopal effect of Comb-BNCT. Inhibition of metastatic spread to lymph nodes was observed in all Comb-BNCT groups. Considering systemic aspects, CD8+ was elevated for Comb-BNCT+GLN vs. SHAM (p ≤ 0.01), and NK was elevated for Comb-BNCT vs. SHAM (p ≤ 0.05). Comb-BNCT improved therapeutic efficacy and reduced radiotoxicity compared to BPA-BNCT and induced an immune response and an abscopal effect.
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Affiliation(s)
- Debora N Frydryk Benitez
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - Mónica A Palmieri
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), Av. Int. Güiraldes 2160, 4 Piso, Pab. II, Ciudad Autónoma de Buenos Aires C1428EGA, Argentina
| | - Yanina V Langle
- Facultad de Medicina, Instituto de Oncología Ángel H. Roffo (IOAHR), Universidad de Buenos Aires, Av. S. Martín 5481, Área de Investigación, Ciudad Autónoma de Buenos Aires C1417DTB, Argentina
| | - Andrea Monti Hughes
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | - Emiliano C C Pozzi
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - Silvia I Thorp
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - Marcela A Garabalino
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - Paula Curotto
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - Paula S Ramos
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
| | - María L Paparella
- Facultad Odontología, Universidad de Buenos Aires (UBA), M.T. de Alvear 2142, Ciudad Autónoma de Buenos Aires C1122AAH, Argentina
| | - Lucas Polti
- Facultad Odontología, Universidad de Buenos Aires (UBA), M.T. de Alvear 2142, Ciudad Autónoma de Buenos Aires C1122AAH, Argentina
| | - Ana Eiján
- Facultad de Medicina, Instituto de Oncología Ángel H. Roffo (IOAHR), Universidad de Buenos Aires, Av. S. Martín 5481, Área de Investigación, Ciudad Autónoma de Buenos Aires C1417DTB, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | - Amanda E Schwint
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
| | - Verónica A Trivillin
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, Buenos Aires C1650KNA, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires C1425FQB, Argentina
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4
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Espector N, Portu AM, Espain MS, Leyva G, Saint Martin G. Measurement of an evaporation coefficient in tissue sections as a correction factor for 10B determination. Histochem Cell Biol 2023:10.1007/s00418-023-02200-w. [PMID: 37126141 DOI: 10.1007/s00418-023-02200-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2023] [Indexed: 05/02/2023]
Abstract
Boron neutron capture therapy (BNCT) is a cancer treatment option that combines preferential uptake of a boron compound in tumors and irradiation with thermal neutrons. For treatment planning, the boron concentration in different tissues must be considered. Neutron autoradiography using nuclear track detectors (NTD) can be applied to study both the concentration and microdistribution of boron in tissue samples. Histological sections are obtained from frozen tissue by cryosectioning. When the samples reach room temperature, they undergo an evaporation process, which leads to an increase in the boron concentration. To take this effect into account, certain correction factors (evaporation coefficients, CEv) must be applied. With this aim, a protocol was established to register and analyze mass variation of tissue sections, measured with a semimicro scale. Values of ambient temperature, pressure, and humidity were simultaneously recorded. Reproducible results of evaporation curves and CEv values were obtained for different tissue samples, which allowed the systematization of the procedure. This study could contribute to a more precise determination of boron concentration in tissue samples through the neutron autoradiography technique, which is of great relevance to make dosimetric calculations in BNCT.
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Affiliation(s)
- Natalia Espector
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, B1650KNA, Buenos Aires, Argentina
| | - Agustina Mariana Portu
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, B1650KNA, Buenos Aires, Argentina.
- Comisión Nacional de Investigaciones Científicas y Técnicas (CONICET), Capital Federal, Buenos Aires, Argentina.
| | - María Sol Espain
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, B1650KNA, Buenos Aires, Argentina
- Comisión Nacional de Investigaciones Científicas y Técnicas (CONICET), Capital Federal, Buenos Aires, Argentina
| | - Gabriela Leyva
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, B1650KNA, Buenos Aires, Argentina
| | - Gisela Saint Martin
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, San Martin, B1650KNA, Buenos Aires, Argentina
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Stepanova M, Dobrodumov A, Averianov I, Gofman I, Nashchekina J, Guryanov I, Klyukin I, Zhdanov A, Korzhikova-Vlakh E, Zhizhin K. Design, Fabrication and Characterization of Biodegradable Composites Containing Closo-Borates as Potential Materials for Boron Neutron Capture Therapy. Polymers (Basel) 2022; 14:polym14183864. [PMID: 36146012 PMCID: PMC9506383 DOI: 10.3390/polym14183864] [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: 07/29/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 12/04/2022] Open
Abstract
Boron neutron capture therapy (BNCT) has been recognized as a very promising approach for cancer treatment. In the case of osteosarcoma, boron-containing scaffolds can be a powerful tool to combine boron delivery to the tumor cells and the repair of postoperative bone defects. Here we describe the fabrication and characterization of novel biodegradable polymer composites as films and 3D-printed matrices based on aliphatic polyesters containing closo-borates (CB) for BNCT. Different approaches to the fabrication of composites have been applied, and the mechanical properties of these composites, kinetics of their degradation, and the release of closo-borate have been studied. The most complex scaffold was a 3D-printed poly(ε-caprolactone) matrix filled with CB-containing alginate/gelatin hydrogel to enhance biocompatibility. The results obtained allowed us to confirm the high potential of the developed composite materials for application in BNCT and bone tissue regeneration.
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Affiliation(s)
- Mariia Stepanova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
- Correspondence: (M.S.); (I.G.)
| | - Anatoliy Dobrodumov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Ilia Averianov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Iosif Gofman
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Juliya Nashchekina
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Ivan Guryanov
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 198504, Russia
- Correspondence: (M.S.); (I.G.)
| | - Ilya Klyukin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Andrey Zhdanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
- Institute of Chemistry, Saint-Petersburg State University, St. Petersburg 198504, Russia
| | - Konstantin Zhizhin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
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Viegas AMD, Postuma I, Bortolussi S, Guidi C, Riback JS, Provenzano L, Marcaccio B, Rossini AE, Ferrari C, Cansolino L, Ferrari M, Portu AM, González SJ. Detailed dosimetry calculation for in-vitro experiments and its impact on clinical BNCT. Phys Med 2021; 89:282-292. [PMID: 34474326 DOI: 10.1016/j.ejmp.2021.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/18/2021] [Accepted: 08/21/2021] [Indexed: 10/20/2022] Open
Abstract
PURPOSE Boron Neutron Capture Therapy (BNCT) is a form of hadrontherapy based on the selective damage caused by the products of neutron capture in 10B to tumour cells. BNCT dosimetry strongly depends on the parameters of the dose calculation models derived from radiobiological experiments. This works aims at determining an adequate dosimetry for in-vitro experiments involving irradiation of monolayer-cultured cells with photons and BNCT and assessing its impact on clinical settings. M&M: Dose calculations for rat osteosarcoma UMR-106 and human metastatic melanoma Mel-J cell survival experiments were performed using MCNP, transporting uncharged particles for KERMA determinations, and secondary particles (electrons, protons, 14C, 4He and 7Li) to compute absorbed dose in cultures. Dose-survival curves were modified according to the dose correction factors determined from computational studies. New radiobiological parameters of the photon isoeffective dose models for osteosarcoma and metastatic melanoma tumours were obtained. Dosimetry implications considering cutaneous melanoma patients treated in Argentina with BNCT were assessed and discussed. RESULTS KERMA values for the monolayer-cultured cells overestimate absorbed doses of radiation components of interest in BNCT. Detailed dose calculations for the osteosarcoma irradiation increased the relative biological effectiveness factor RBE1% of the neutron component in more than 30%. The analysis based on melanoma cases reveals that the use of survival curves based on KERMA leads to an underestimation of the tumour doses delivered to patients. CONCLUSIONS Considering detailed dose calculation for in-vitro experiments significantly impact on the prediction of the tumor control in patients. Therefore, proposed methods are clinically relevant.
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Affiliation(s)
- Ana Mailén Dattoli Viegas
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón I, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina; Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
| | - Ian Postuma
- National Institute of Nuclear Physics (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy
| | - Silva Bortolussi
- National Institute of Nuclear Physics (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; University of Pavia, Department of Physics, via A. Bassi 6, 27100 Pavia, Italy.
| | - Claretta Guidi
- National Institute of Nuclear Physics (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; University of Pavia, Department of Physics, via A. Bassi 6, 27100 Pavia, Italy
| | - Jessica Sofía Riback
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2270, C, Ciudad Autónoma de Buenos Aires, Argentina
| | - Lucas Provenzano
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina
| | - Barbara Marcaccio
- University of Pavia, Department of Physics, via A. Bassi 6, 27100 Pavia, Italy
| | - Andrés Eugenio Rossini
- Laboratorio de Radiopatología, Gerencia de Mediciones y Evaluaciones en protección Radiológica. Autoridad Regulatoria Nuclear (ARN), Av. del Libertador 8250, C1429 BNP Ciudad Autónoma de Buenos Aires, Argentina
| | - Cinzia Ferrari
- National Institute of Nuclear Physics (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; University of Pavia, Laboratory of Experimental Surgery, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, via Ferrata 9, 27100 Pavia, Italy
| | - Laura Cansolino
- National Institute of Nuclear Physics (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; University of Pavia, Laboratory of Experimental Surgery, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, via Ferrata 9, 27100 Pavia, Italy
| | | | - Agustina Mariana Portu
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2270, C, Ciudad Autónoma de Buenos Aires, Argentina
| | - Sara Josefina González
- Comisión Nacional de Energía Atómica (CNEA), Av. General Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2270, C, Ciudad Autónoma de Buenos Aires, Argentina
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7
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Pedrosa-Rivera M, Praena J, Porras I, Sabariego MP, Köster U, Haertlein M, Forsyth VT, Ramírez JC, Jover C, Jimena D, Osorio JL, Álvarez P, Ruiz-Ruiz C, Ruiz-Magaña MJ. Thermal Neutron Relative Biological Effectiveness Factors for Boron Neutron Capture Therapy from In Vitro Irradiations. Cells 2020; 9:cells9102144. [PMID: 32977400 PMCID: PMC7598166 DOI: 10.3390/cells9102144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022] Open
Abstract
The experimental determination of the relative biological effectiveness of thermal neutron factors is fundamental in Boron Neutron Capture Therapy. The present values have been obtained while using mixed beams that consist of both neutrons and photons of various energies. A common weighting factor has been used for both thermal and fast neutron doses, although such an approach has been questioned. At the nuclear reactor of the Institut Laue-Langevin a pure low-energy neutron beam has been used to determine thermal neutron relative biological effectiveness factors. Different cancer cell lines, which correspond to glioblastoma, melanoma, and head and neck squamous cell carcinoma, and non-tumor cell lines (lung fibroblast and embryonic kidney), have been irradiated while using an experimental arrangement designed to minimize neutron-induced secondary gamma radiation. Additionally, the cells were irradiated with photons at a medical linear accelerator, providing reference data for comparison with that from neutron irradiation. The survival and proliferation were studied after irradiation, yielding the Relative Biological Effectiveness that corresponds to the damage of thermal neutrons for the different tissue types.
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Affiliation(s)
- María Pedrosa-Rivera
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; (M.P.-R.); (J.P.); (M.P.S.)
| | - Javier Praena
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; (M.P.-R.); (J.P.); (M.P.S.)
| | - Ignacio Porras
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; (M.P.-R.); (J.P.); (M.P.S.)
- Correspondence: (I.P.); (C.R.-R.)
| | - Manuel P. Sabariego
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; (M.P.-R.); (J.P.); (M.P.S.)
| | - Ulli Köster
- Institut Laue-Langevin, 71 Avenue des Martyrs, CEDEX 9, 38042 Grenoble, France; (U.K.); (M.H.); (V.T.F.)
| | - Michael Haertlein
- Institut Laue-Langevin, 71 Avenue des Martyrs, CEDEX 9, 38042 Grenoble, France; (U.K.); (M.H.); (V.T.F.)
- Partnership for Structural Biology (PSB), CEDEX 9, 38042 Grenoble, France
| | - V. Trevor Forsyth
- Institut Laue-Langevin, 71 Avenue des Martyrs, CEDEX 9, 38042 Grenoble, France; (U.K.); (M.H.); (V.T.F.)
- Partnership for Structural Biology (PSB), CEDEX 9, 38042 Grenoble, France
- Faculty of Natural Sciences, Keele University, Staffordshire ST5 5BG, UK
| | - José C. Ramírez
- Servicio de Radiofísica y Protección Radiológica, Hospital Universitario Virgen de las Nieves, Avda. Fuerzas Armadas 2, 18014 Granada, Spain; (J.C.R.); (C.J.); (D.J.); (J.L.O.)
| | - Clara Jover
- Servicio de Radiofísica y Protección Radiológica, Hospital Universitario Virgen de las Nieves, Avda. Fuerzas Armadas 2, 18014 Granada, Spain; (J.C.R.); (C.J.); (D.J.); (J.L.O.)
| | - Daniel Jimena
- Servicio de Radiofísica y Protección Radiológica, Hospital Universitario Virgen de las Nieves, Avda. Fuerzas Armadas 2, 18014 Granada, Spain; (J.C.R.); (C.J.); (D.J.); (J.L.O.)
| | - Juan L. Osorio
- Servicio de Radiofísica y Protección Radiológica, Hospital Universitario Virgen de las Nieves, Avda. Fuerzas Armadas 2, 18014 Granada, Spain; (J.C.R.); (C.J.); (D.J.); (J.L.O.)
| | - Patricia Álvarez
- Departamento de Bioquímica y Biología Molecular III e Inmunología, Facultad de Medicina, Universidad de Granada, 18016 Granada, Spain; (P.Á.); (M.J.R.-M.)
| | - Carmen Ruiz-Ruiz
- Departamento de Bioquímica y Biología Molecular III e Inmunología, Facultad de Medicina, Universidad de Granada, 18016 Granada, Spain; (P.Á.); (M.J.R.-M.)
- Correspondence: (I.P.); (C.R.-R.)
| | - María J. Ruiz-Magaña
- Departamento de Bioquímica y Biología Molecular III e Inmunología, Facultad de Medicina, Universidad de Granada, 18016 Granada, Spain; (P.Á.); (M.J.R.-M.)
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8
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A simple approximation for the evaluation of the photon iso-effective dose in Boron Neutron Capture Therapy based on dose-independent weighting factors. Appl Radiat Isot 2020; 157:109018. [DOI: 10.1016/j.apradiso.2019.109018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 11/27/2019] [Accepted: 12/03/2019] [Indexed: 11/23/2022]
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9
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The essential role of radiobiological figures of merit for the assessment and comparison of beam performances in boron neutron capture therapy. Phys Med 2019; 67:9-19. [PMID: 31610302 DOI: 10.1016/j.ejmp.2019.09.235] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/09/2019] [Accepted: 09/14/2019] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Boron Neutron Capture Therapy (BNCT) is a treatment modality that uses an external neutron beam to selectively inactive boron10-loaded tumor cells. This work presents the development and innovative use of radiobiological probability models to adequately evaluate and compare the therapeutic potential and versatility of beams presenting different neutron energy spectra. M&M: Aforementioned characteristics, collectively refer to as the performance of a beam, were defined on the basis of radiobiological probability models for the first time in BNCT. A model of uncomplicated tumor control probability (UTCP) for HN cancer was introduced. This model considers a NTCP able to predict severe mucositis and a TCP for non-uniform doses derived herein. A systematic study comprising a simplified HN cancer model is presented as a practical application of the introduced radiobiological figures of merit (FOM) for assessing and comparing the performance of different clinical beams. Applications involving treated HN cancer patients were also analyzed. RESULTS The maximum UTCP proved suitable and sensitive to assess the performance of a beam, revealing particularities of the studied sources that the physical FOMs do not highlight. The radiobiological FOMs evaluated in patients showed to be useful tools both for retrospective analysis of the BNCT treatments, and for prospective studies of beam optimization and feasibility. CONCLUSIONS The presented developments and applications demonstrated that it is possible to assess and compare performances of completely different beams fairly and adequately by assessing the radiobiological FOM UTCP. Thus, this figure would be a practical and essential aid to guide treatment decisions.
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10
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Safavi-Naeini M, Chacon A, Guatelli S, Franklin DR, Bambery K, Gregoire MC, Rosenfeld A. Opportunistic dose amplification for proton and carbon ion therapy via capture of internally generated thermal neutrons. Sci Rep 2018; 8:16257. [PMID: 30390002 PMCID: PMC6215016 DOI: 10.1038/s41598-018-34643-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 10/22/2018] [Indexed: 12/11/2022] Open
Abstract
This paper presents Neutron Capture Enhanced Particle Therapy (NCEPT), a method for enhancing the radiation dose delivered to a tumour relative to surrounding healthy tissues during proton and carbon ion therapy by capturing thermal neutrons produced inside the treatment volume during irradiation. NCEPT utilises extant and in-development boron-10 and gadolinium-157-based drugs from the related field of neutron capture therapy. Using Monte Carlo simulations, we demonstrate that a typical proton or carbon ion therapy treatment plan generates an approximately uniform thermal neutron field within the target volume, centred around the beam path. The tissue concentrations of neutron capture agents required to obtain an arbitrary 10% increase in biological effective dose are estimated for realistic treatment plans, and compared to concentrations previously reported in the literature. We conclude that the proposed method is theoretically feasible, and can provide a worthwhile improvement in the dose delivered to the tumour relative to healthy tissue with readily achievable concentrations of neutron capture enhancement drugs.
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Affiliation(s)
- Mitra Safavi-Naeini
- Australian Nuclear Science and Technology Organisation (ANSTO), Sydney, Australia.
- Centre for Medical Radiation Physics, University of Wollongong, Sydney, Australia.
| | - Andrew Chacon
- Australian Nuclear Science and Technology Organisation (ANSTO), Sydney, Australia
- Centre for Medical Radiation Physics, University of Wollongong, Sydney, Australia
| | - Susanna Guatelli
- Centre for Medical Radiation Physics, University of Wollongong, Sydney, Australia
| | - Daniel R Franklin
- Faculty of Engineering & IT, University of Technology Sydney, Sydney, Australia
| | - Keith Bambery
- Australian Nuclear Science and Technology Organisation (ANSTO), Sydney, Australia
| | - Marie-Claude Gregoire
- Australian Nuclear Science and Technology Organisation (ANSTO), Sydney, Australia
- Centre for Medical Radiation Physics, University of Wollongong, Sydney, Australia
| | - Anatoly Rosenfeld
- Centre for Medical Radiation Physics, University of Wollongong, Sydney, Australia
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11
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Provenzano L, Olivera MS, Saint Martin G, Rodríguez LM, Fregenal D, Thorp SI, Pozzi ECC, Curotto P, Postuma I, Altieri S, González SJ, Bortolussi S, Portu A. Extending neutron autoradiography technique for boron concentration measurements in hard tissues. Appl Radiat Isot 2018; 137:62-67. [PMID: 29587160 DOI: 10.1016/j.apradiso.2018.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 01/23/2018] [Accepted: 03/10/2018] [Indexed: 11/16/2022]
Abstract
The neutron autoradiography technique using polycarbonate nuclear track detectors (NTD) has been extended to quantify the boron concentration in hard tissues, an application of special interest in Boron Neutron Capture Therapy (BNCT). Chemical and mechanical processing methods to prepare thin tissue sections as required by this technique have been explored. Four different decalcification methods governed by slow and fast kinetics were tested in boron-loaded bones. Due to the significant loss of the boron content, this technique was discarded. On the contrary, mechanical manipulation to obtain bone powder and tissue sections of tens of microns thick proved reproducible and suitable, ensuring a proper conservation of the boron content in the samples. A calibration curve that relates the 10B concentration of a bone sample and the track density in a Lexan NTD is presented. Bone powder embedded in boric acid solution with known boron concentrations between 0 and 100 ppm was used as a standard material. The samples, contained in slim Lexan cases, were exposed to a neutron fluence of 1012 cm-2 at the thermal column central facility of the RA-3 reactor (Argentina). The revealed tracks in the NTD were counted with an image processing software. The effect of track overlapping was studied and corresponding corrections were implemented in the presented calibration curve. Stochastic simulations of the track densities produced by the products of the 10B thermal neutron capture reaction for different boron concentrations in bone were performed and compared with the experimental results. The remarkable agreement between the two curves suggested the suitability of the obtained experimental calibration curve. This neutron autoradiography technique was finally applied to determine the boron concentration in pulverized and compact bone samples coming from a sheep experimental model. The obtained results for both type of samples agreed with boron measurements carried out by ICP-OES within experimental uncertainties. The fact that the histological structure of bone sections remains preserved allows for future boron microdistribution analysis.
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Affiliation(s)
- Lucas Provenzano
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB CABA, Argentina.
| | - María Silvina Olivera
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina.
| | - Gisela Saint Martin
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina.
| | - Luis Miguel Rodríguez
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB CABA, Argentina.
| | - Daniel Fregenal
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB CABA, Argentina.
| | - Silvia I Thorp
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina.
| | - Emiliano C C Pozzi
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina.
| | - Paula Curotto
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina.
| | - Ian Postuma
- Istituto Nazionale di Fisica Nucleare (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy.
| | - Saverio Altieri
- Istituto Nazionale di Fisica Nucleare (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; Departament of Physics, University of Pavia, via A. Bassi 6, 27100 Pavia, Italy.
| | - Sara J González
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB CABA, Argentina.
| | - Silva Bortolussi
- Istituto Nazionale di Fisica Nucleare (INFN), Unit of Pavia, via A. Bassi 6, 27100 Pavia, Italy; Departament of Physics, University of Pavia, via A. Bassi 6, 27100 Pavia, Italy.
| | - Agustina Portu
- Comisión Nacional de Energía Atómica (CNEA), Av. Del Libertador 8250, C1429BNP CABA, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB CABA, Argentina.
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