Document Detail

In vitro and in vivo studies of boron neutron capture therapy: boron uptake/washout and cell death.
MedLine Citation:
PMID:  21133762     Owner:  NLM     Status:  In-Data-Review    
Boron neutron capture therapy (BNCT) is a binary radiotherapy based on thermal-neutron irradiation of cells enriched with (10)B, which produces α particles and (7)Li ions of short range and high biological effectiveness. The selective uptake of boron by tumor cells is a crucial issue for BNCT, and studies of boron uptake and washout associated with cell survival studies can be of great help in developing clinical applications. In this work, boron uptake and washout were characterized both in vitro for the DHDK12TRb (DHD) rat colon carcinoma cell line and in vivo using rats bearing liver metastases from DHD cells. Despite a remarkable uptake, a large boron release was observed after removal of the boron-enriched medium from in vitro cell cultures. However, analysis of boron washout after rat liver perfusion in vivo did not show a significant boron release, suggesting that organ perfusion does not limit the therapeutic effectiveness of the treatment. The survival of boron-loaded cells exposed to thermal neutrons was also assessed; the results indicated that the removal of extracellular boron does not limit treatment effectiveness if adequate amounts of boron are delivered and if the cells are kept at low temperature. Cell survival was also investigated theoretically using a mechanistic model/Monte Carlo code originally developed for radiation-induced chromosome aberrations and extended here to cell death; good agreement between simulation outcomes and experimental data was obtained.
C Ferrari; J Bakeine; F Ballarini; A Boninella; S Bortolussi; P Bruschi; L Cansolino; A M Clerici; A Coppola; R Di Liberto; P Dionigi; N Protti; S Stella; A Zonta; C Zonta; S Altieri
Publication Detail:
Type:  Journal Article     Date:  2010-12-06
Journal Detail:
Title:  Radiation research     Volume:  175     ISSN:  1938-5404     ISO Abbreviation:  Radiat. Res.     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-04-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401245     Medline TA:  Radiat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  452-62     Citation Subset:  IM; S    
a  University of Pavia, Department of Surgery, Experimental Surgery Laboratory, Pavia, Italy.
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