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First experimental proof of Proton Boron Capture Therapy (PBCT) to enhance protontherapy effectiveness

GAP. Cirrone, L. Manti, D. Margarone, G. Petringa, L. Giuffrida, A. Minopoli, A. Picciotto, G. Russo, F. Cammarata, P. Pisciotta, FM. Perozziello, F. Romano, V. Marchese, G. Milluzzo, V. Scuderi, G. Cuttone, G. Korn,

. 2018 ; 8 (1) : 1141. [pub] 20180118

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc19000973

Protontherapy is hadrontherapy's fastest-growing modality and a pillar in the battle against cancer. Hadrontherapy's superiority lies in its inverted depth-dose profile, hence tumour-confined irradiation. Protons, however, lack distinct radiobiological advantages over photons or electrons. Higher LET (Linear Energy Transfer) 12C-ions can overcome cancer radioresistance: DNA lesion complexity increases with LET, resulting in efficient cell killing, i.e. higher Relative Biological Effectiveness (RBE). However, economic and radiobiological issues hamper 12C-ion clinical amenability. Thus, enhancing proton RBE is desirable. To this end, we exploited the p + 11B → 3α reaction to generate high-LET alpha particles with a clinical proton beam. To maximize the reaction rate, we used sodium borocaptate (BSH) with natural boron content. Boron-Neutron Capture Therapy (BNCT) uses 10B-enriched BSH for neutron irradiation-triggered alpha particles. We recorded significantly increased cellular lethality and chromosome aberration complexity. A strategy combining protontherapy's ballistic precision with the higher RBE promised by BNCT and 12C-ion therapy is thus demonstrated.

Citace poskytuje Crossref.org

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$a Protontherapy is hadrontherapy's fastest-growing modality and a pillar in the battle against cancer. Hadrontherapy's superiority lies in its inverted depth-dose profile, hence tumour-confined irradiation. Protons, however, lack distinct radiobiological advantages over photons or electrons. Higher LET (Linear Energy Transfer) 12C-ions can overcome cancer radioresistance: DNA lesion complexity increases with LET, resulting in efficient cell killing, i.e. higher Relative Biological Effectiveness (RBE). However, economic and radiobiological issues hamper 12C-ion clinical amenability. Thus, enhancing proton RBE is desirable. To this end, we exploited the p + 11B → 3α reaction to generate high-LET alpha particles with a clinical proton beam. To maximize the reaction rate, we used sodium borocaptate (BSH) with natural boron content. Boron-Neutron Capture Therapy (BNCT) uses 10B-enriched BSH for neutron irradiation-triggered alpha particles. We recorded significantly increased cellular lethality and chromosome aberration complexity. A strategy combining protontherapy's ballistic precision with the higher RBE promised by BNCT and 12C-ion therapy is thus demonstrated.
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$a Manti, L $u Physics Department, University of Naples Federico II, Naples, Italy. INFN Naples Section, Complesso Universitario di Monte S. Angelo, Via Cintia, Naples, Italy.
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$a Margarone, D $u Institute of Physics ASCR, v.v.i. (FZU), ELI-Beamlines Project, Na Slovance 2, Prague, 18221, Czech Republic.
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$a Petringa, G $u Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali dei Sud, via S. Sofia, 62, Catania, Italy. Physics Department, University of Catania, via S. Sofia, 64, Catania, Italy.
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$a Giuffrida, L $u Institute of Physics ASCR, v.v.i. (FZU), ELI-Beamlines Project, Na Slovance 2, Prague, 18221, Czech Republic.
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$a Minopoli, A $u Physics Department, University of Naples Federico II, Naples, Italy.
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$a Russo, G $u Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali dei Sud, via S. Sofia, 62, Catania, Italy. Institute of Molecular Bioimaging and Physiology - National Research Council - (IBFM-CNR), Cefalù, (PA), Italy.
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$a Cammarata, F $u Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali dei Sud, via S. Sofia, 62, Catania, Italy. Institute of Molecular Bioimaging and Physiology - National Research Council - (IBFM-CNR), Cefalù, (PA), Italy.
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$a Romano, F $u Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali dei Sud, via S. Sofia, 62, Catania, Italy. National Physical Laboratory, Acoustic and Ionizing Radiation Division, Teddington, TW11 0LW, Middlesex, United Kingdom.
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$a Milluzzo, G $u Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali dei Sud, via S. Sofia, 62, Catania, Italy. Physics Department, University of Catania, via S. Sofia, 64, Catania, Italy.
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$a Korn, G $u Institute of Physics ASCR, v.v.i. (FZU), ELI-Beamlines Project, Na Slovance 2, Prague, 18221, Czech Republic.
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