Article
Unrepairable DNA double-strand breaks that are generated by ionising radiation determine the fate of normal human cells.
Journal of cell science - 15 Nov 2012
Noda Asao, Hirai Yuko, Hamasaki Kanya, Mitani Hiroshi, Nakamura Nori, Kodama Yoshiaki
Abstract excerpt
After an exposure to ionising radiation, cells can quickly repair damage to their genomes; however, a few unrepairable DNA double-strand breaks (DSBs) emerge in the nucleus in a prolonged culture and perpetuate as long as the culture continues. These DSBs may be retained forever in cells such as non-dividing ageing tissues, which are resistant to apoptosis. We show that such unrepairable DSBs, which had been...
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