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Track structure calculations on hypothetical subcellular targets for the release of cell-killing signals in bystander experiments with medium transfer.
Radiat. Prot. Dosim. 143, 325-329 (2011)
Track structure studies using PARTRAC have been performed with the aim to investigate the possibility of revealing information on initiating targets and mechanisms of bystander effects mediated by signals released into the culture medium. Dependences on radiation dose have been assessed for alternative signal emission scenarios, defined by required energy deposits in a number of subcellular targets, mimicking e.g. mitochondria as hypothetical targets for the release of signals. The simulation results agree with target theory, and elucidate the characteristic dose for signal emission as a function of target topology, size and activation energy. The observed dose dependence of bystander cell kill in medium transfer experiments is not as steep as predicted by the considered simple signal emission scenarios with a single or even multiple hits to the hypothetical targets. This has been resolved by accounting for variations in cellular characteristics among the irradiated cells.
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Anmerkungen
Besondere Publikation
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Induction; Radiation
Sprache
Veröffentlichungsjahr
2011
HGF-Berichtsjahr
2011
ISSN (print) / ISBN
0144-8420
e-ISSN
1742-3406
Zeitschrift
Radiation Protection Dosimetry
Quellenangaben
Band: 143,
Heft: 2-4,
Seiten: 325-329
Verlag
Oxford University Press
Verlagsort
Oxford
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Radiation Protection (ISS)
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er)
Radiation Sciences
PSP-Element(e)
G-501100-004
PubMed ID
21113064
Scopus ID
79952355538
Erfassungsdatum
2011-07-25