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Effectiveness of Monoenergetic and Spread-Out Bragg Peak Carbon-Ions for Inactivation of Various Normal and Tumour Human Cell Lines

Mauro BELLI ; Daniela BETTEGA ; Paola CALZOLARI ; Roberto CHERUBINI ; Giacomo CUTTONE ; Marco DURANTE ; Giuseppe ESPOSITO ; Yoshiya FURUSAWA ; Silvia GERARDI ; Giancarlo GIALANELLA ; Gianfranco GROSSI ; Lorenzo MANTI ; Renato MARCHESINI ; Mariagabriella PUGLIESE ; Paola SCAMPOLI ; Giustina SIMONE ; Eugenio SORRENTINO ; Maria Antonella TABOCCHINI ; Lucia TALLONE

JOURNAL OF RADIATION RESEARCH, 2008, Vol.49 (6), p.597-607

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  • Titolo:
    Effectiveness of Monoenergetic and Spread-Out Bragg Peak Carbon-Ions for Inactivation of Various Normal and Tumour Human Cell Lines
  • Autore: Mauro BELLI ; Daniela BETTEGA ; Paola CALZOLARI ; Roberto CHERUBINI ; Giacomo CUTTONE ; Marco DURANTE ; Giuseppe ESPOSITO ; Yoshiya FURUSAWA ; Silvia GERARDI ; Giancarlo GIALANELLA ; Gianfranco GROSSI ; Lorenzo MANTI ; Renato MARCHESINI ; Mariagabriella PUGLIESE ; Paola SCAMPOLI ; Giustina SIMONE ; Eugenio SORRENTINO ; Maria Antonella TABOCCHINI ; Lucia TALLONE
  • Editore: THE JAPAN RADIATION RESEARCH SOCIETY
  • Note di contenuto: This work aimed at measuring cell-killing effectiveness of monoenergetic and Spread-Out Bragg Peak (SOBP) carbon-ion beams in normal and tumour cells with different radiation sensitivity. Clonogenic survival was assayed in normal and tumour human cell lines exhibiting different radiosensitivity to X- or γ-rays following exposure to monoenergetic carbon-ion beams (incident LET 13-303 keV/μm) and at various positions along the ionization curve of a therapeutic carbon-ion beam, corresponding to three doseaveraged LET (LETd) values (40, 50 and 75 keV/μm). Chinese hamster V79 cells were also used. Carbon-ion effectiveness for cell inactivation generally increased with LET for monoenergetic beams, with the largest gain in cell-killing obtained in the cells most radioresistant to X- or γ-rays. Such an increased effectiveness in cells less responsive to low LET radiation was found also for SOBP irradiation, but the latter was less effective compared with monoenergetic ion beams of the same LET. Our data show the superior effectiveness for cell-killing exhibited by carbon-ion beams compared to lower LET radiation, particularly in tumour cells radioresistant to X- or γ-rays, hence the advantage of using such beams in radiotherapy. The observed lower effectiveness of SOBP irradiation compared to monoenergetic carbon beam irradiation argues against the radiobiological equivalence between dose-averaged LET in a point in the SOBP and the corresponding monoenergetic beams.
  • Fa parte di: JOURNAL OF RADIATION RESEARCH, 2008, Vol.49 (6), p.597-607
  • Lingua: Giapponese
  • Tipo: Articolo
  • Identificativo: ISSN: 0449-3060
    EISSN: 1349-9157

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