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Bortolussi S, Postuma I, Protti N, Fatemi S, Magni C, Gonzalez S, Altieri S. EP-1885 Neutron beam design and dosimetric evaluation for accelerator-based Boron Neutron Capture Therapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32305-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Protti N, Geninatti-Crich S, Alberti D, Lanzardo S, Deagostino A, Toppino A, Aime S, Ballarini F, Bortolussi S, Bruschi P, Postuma I, Altieri S, Nikjoo H. Evaluation of the dose enhancement of combined ¹⁰B + ¹⁵⁷Gd neutron capture therapy (NCT). Radiat Prot Dosimetry 2015; 166:369-73. [PMID: 26246584 DOI: 10.1093/rpd/ncv300] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
An innovative molecule, GdBLDL, for boron neutron capture therapy (BNCT) has been developed and its effectiveness as a BNCT carrier is currently under evaluation using in vivo experiments on small animal tumour models. The molecule contains both (10)B (the most commonly used NCT agent) and (157)Gd nuclei. (157)Gd is the second most studied element to perform NCT, mainly thanks to its high cross section for the capture of low-energy neutrons. The main drawback of (157)Gd neutron capture reaction is the very short range and low-energy secondary charged particles (Auger electrons), which requires (157)Gd to be very close to the cellular DNA to have an appreciable biological effect. Treatment doses were calculated by Monte Carlo simulations to ensure the optimised tumour irradiation and the sparing of the healthy organs of the irradiated animals. The enhancement of the absorbed dose due to the simultaneous presence of (10)B and (157)Gd in the experimental set-up was calculated and the advantage introduced by the presence of (157)Gd was discussed.
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Affiliation(s)
- N Protti
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy National Institute of Nuclear Physics INFN, Section of Pavia, via Bassi 6, Pavia 27100, Italy
| | - S Geninatti-Crich
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino 10126, Italy
| | - D Alberti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino 10126, Italy
| | - S Lanzardo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino 10126, Italy
| | - A Deagostino
- Department of Chemistry, University of Torino, via P.Giuria 7, Torino 10125, Italy
| | - A Toppino
- Department of Chemistry, University of Torino, via P.Giuria 7, Torino 10125, Italy
| | - S Aime
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino 10126, Italy
| | - F Ballarini
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy National Institute of Nuclear Physics INFN, Section of Pavia, via Bassi 6, Pavia 27100, Italy
| | - S Bortolussi
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy National Institute of Nuclear Physics INFN, Section of Pavia, via Bassi 6, Pavia 27100, Italy
| | - P Bruschi
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy
| | - I Postuma
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy National Institute of Nuclear Physics INFN, Section of Pavia, via Bassi 6, Pavia 27100, Italy
| | - S Altieri
- Department of Physics, University of Pavia, via Bassi 6, Pavia 27100, Italy National Institute of Nuclear Physics INFN, Section of Pavia, via Bassi 6, Pavia 27100, Italy
| | - H Nikjoo
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm SE171 76, Sweden
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Carante MP, Altieri S, Bortolussi S, Postuma I, Protti N, Ballarini F. Modeling radiation-induced cell death: role of different levels of DNA damage clustering. Radiat Environ Biophys 2015; 54:305-316. [PMID: 25956821 DOI: 10.1007/s00411-015-0601-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
Some open questions on the mechanisms underlying radiation-induced cell death were addressed by a biophysical model, focusing on DNA damage clustering and its consequences. DNA "cluster lesions" (CLs) were assumed to produce independent chromosome fragments that, if created within a micrometer-scale threshold distance (d), can lead to chromosome aberrations following mis-rejoining; in turn, certain aberrations (dicentrics, rings and large deletions) were assumed to lead to clonogenic cell death. The CL yield and d were the only adjustable parameters. The model, implemented as a Monte Carlo code called BIophysical ANalysis of Cell death and chromosome Aberrations (BIANCA), provided simulated survival curves that were directly compared with experimental data on human and hamster cells exposed to photons, protons, α-particles and heavier ions including carbon and iron. d = 5 μm, independent of radiation quality, and CL yields in the range ~2-20 CLs Gy(-1) cell(-1), depending on particle type and energy, led to good agreement between simulations and data. This supports the hypothesis of a pivotal role of DNA cluster damage at sub-micrometric scale, modulated by chromosome fragment mis-rejoining at micrometric scale. To investigate the features of such critical damage, the CL yields were compared with experimental or theoretical yields of DNA fragments of different sizes, focusing on the base-pair scale (related to the so-called local clustering), the kbp scale ("regional clustering") and the Mbp scale, corresponding to chromatin loops. Interestingly, the CL yields showed better agreement with kbp fragments rather than bp fragments or Mbp fragments; this suggests that also regional clustering, in addition to other clustering levels, may play an important role, possibly due to its relationship with nucleosome organization in the chromatin fiber.
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Affiliation(s)
- M P Carante
- Physics Department, University of Pavia, Via Bassi 6, 27100, Pavia, Italy
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Cansolino L, Clerici AM, Zonta C, Dionigi P, Mazzini G, Di Liberto R, Altieri S, Ballarini F, Bortolussi S, Carante MP, Ferrari M, González SJ, Postuma I, Protti N, Santa Cruz GA, Ferrari C. Comparative study of the radiobiological effects induced on adherent vs suspended cells by BNCT, neutrons and gamma rays treatments. Appl Radiat Isot 2015; 106:226-32. [PMID: 26256647 DOI: 10.1016/j.apradiso.2015.07.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 06/26/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
The present work is part of a preclinical in vitro study to assess the efficacy of BNCT applied to liver or lung coloncarcinoma metastases and to limb osteosarcoma. Adherent growing cell lines can be irradiated as adherent to the culture flasks or as cell suspensions, differences in radio-sensitivity of the two modalities of radiation exposure have been investigated. Dose related cell survival and cell cycle perturbation results evidenced that the radiosensitivity of adherent cells is higher than that of the suspended ones.
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Affiliation(s)
- L Cansolino
- Department of Clinic-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia, Italy; IRCCS S. Matteo Hospital, Pavia, Italy
| | - A M Clerici
- Department of Clinic-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia, Italy
| | - C Zonta
- Department of Clinic-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia, Italy
| | - P Dionigi
- Department of Clinic-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia, Italy; IRCCS S. Matteo Hospital, Pavia, Italy
| | - G Mazzini
- IGM-CNR and Department of Biology and Biotechnologies "L. Spallanzani", University of Pavia, Italy
| | | | - S Altieri
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - F Ballarini
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - S Bortolussi
- INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - M P Carante
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - M Ferrari
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - S J González
- Comisión Nacional de Energía Atómica (CNEA), Buenos Aires, Argentina; CONICET, Argentina
| | - I Postuma
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - N Protti
- Department of Physics, University of Pavia, Italy; INFN (National Institute of Nuclear Physics) Section of Pavia, Italy
| | - G A Santa Cruz
- Comisión Nacional de Energía Atómica (CNEA), Buenos Aires, Argentina
| | - C Ferrari
- Department of Clinic-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia, Italy.
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Colautti P, Moro D, Chiriotti S, Conte V, Evangelista L, Altieri S, Bortolussi S, Protti N, Postuma I. Microdosimetric measurements in the thermal neutron irradiation facility of LENA reactor. Appl Radiat Isot 2014; 88:147-52. [PMID: 24508176 DOI: 10.1016/j.apradiso.2014.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 01/09/2014] [Accepted: 01/09/2014] [Indexed: 11/20/2022]
Abstract
A twin TEPC with electric-field guard tubes has been constructed to be used to characterize the BNCT field of the irradiation facility of LENA reactor. One of the two mini TEPC was doped with 50ppm of (10)B in order to simulate the BNC events occurring in BNCT. By properly processing the two microdosimetric spectra, the gamma, neutron and BNC spectral components can be derived with good precision (~6%). However, direct measurements of (10)B in some doped plastic samples, which were used for constructing the cathode walls, point out the scarce accuracy of the nominal (10)B concentration value. The influence of the Boral(®) door, which closes the irradiation channel, has been measured. The gamma dose increases significantly (+51%) when the Boral(®) door is closed. The crypt-cell-regeneration weighting function has been used to measure the quality, namely the RBEµ value, of the radiation field in different conditions. The measured RBEµ values are only partially consistent with the RBE values of other BNCT facilities.
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Affiliation(s)
- P Colautti
- INFN, Laboratori Nazionali di Legnaro, viale dell׳Università 2, I-35020 Legnaro, PD, Italy.
| | - D Moro
- INFN, Laboratori Nazionali di Legnaro, viale dell׳Università 2, I-35020 Legnaro, PD, Italy
| | - S Chiriotti
- INFN, Laboratori Nazionali di Legnaro, viale dell׳Università 2, I-35020 Legnaro, PD, Italy; SCK.CEN, Boeretang 200, B-2400 Mol, Belgium
| | - V Conte
- INFN, Laboratori Nazionali di Legnaro, viale dell׳Università 2, I-35020 Legnaro, PD, Italy
| | - L Evangelista
- INFN, Laboratori Nazionali di Legnaro, viale dell׳Università 2, I-35020 Legnaro, PD, Italy; Radiotherapy and Nuclear Medicine Unit, Istituto Oncologico Veneto, Padova, via Gattamelata 64, I-35128 Padova, Italy
| | - S Altieri
- Department of Physics, University of Pavia, via Bassi 6, I-27100 Pavia, Italy; INFN, Section of Pavia, via Bassi 6, I-7100 Pavia, Italy
| | - S Bortolussi
- Department of Physics, University of Pavia, via Bassi 6, I-27100 Pavia, Italy; INFN, Section of Pavia, via Bassi 6, I-7100 Pavia, Italy
| | - N Protti
- Department of Physics, University of Pavia, via Bassi 6, I-27100 Pavia, Italy; INFN, Section of Pavia, via Bassi 6, I-7100 Pavia, Italy
| | - I Postuma
- Department of Physics, University of Pavia, via Bassi 6, I-27100 Pavia, Italy; INFN, Section of Pavia, via Bassi 6, I-7100 Pavia, Italy
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