ZHOU Guangming, WEI Zengquan, LI Wenjian, et al. INDUCTION AND REPAIR OF DNA DOUBLE-STRAND BREAKS IN HUMAN HEPATOMA CELLS IRRADIATED WITH 16O6+[J]. Journal of Radiation Research and Radiation Processing, 2000,18(3):198-202.
ZHOU Guangming, WEI Zengquan, LI Wenjian, et al. INDUCTION AND REPAIR OF DNA DOUBLE-STRAND BREAKS IN HUMAN HEPATOMA CELLS IRRADIATED WITH 16O6+[J]. Journal of Radiation Research and Radiation Processing, 2000,18(3):198-202.DOI:
Pulsed-field gel electrophoresis has been applied to analyse the induction and repair of DNA double-strand breaks (DSB) in human hepatoma SMMC-7721 cells exposed to 3.17MeV/u ,16,O,6+,. It shows that the DSB yields are 0.43DSBs/100Mbp/Gy and compared with ,60,Co γ-rays, the relative biological effectiveness (RBE) of ,16,O,6+, is 1.69. The half time of DSB fragments being repaired (,t,1/2,) is relevant to the dose; the higher the dose is, the longer the time is. The main way for DSB repair is the rejoining of smaller fragments into larger ones.
关键词
16O6+DNA双链断裂脉冲场凝胶电泳人肝癌细胞
Keywords
16O6+DNA double-strand breaksPulsed field gel electrophoresisHuman hepatoma cells