YANG Jianshe1, 2 ZHAO Jing1, 2 LI Wenjian1 GAO Qingxiang3 WANG Zhuanzi1, et al. Predict of radiosensitivity of human hepatoma cells irradiated with γ-rays by G2 PCC technique[J]. Nuclear techniques, 2005, (11).
YANG Jianshe1, 2 ZHAO Jing1, 2 LI Wenjian1 GAO Qingxiang3 WANG Zhuanzi1, et al. Predict of radiosensitivity of human hepatoma cells irradiated with γ-rays by G2 PCC technique[J]. Nuclear techniques, 2005, (11).DOI:
To investigate the radiation response of hepatoma cells SMMC-7721 the G2 premature chromosome con- densation technique was used. SMMC-7721 cells ( human hepatoma cells ) were irradiated with 60Co γ -rays. Then cell killing was documented by a colony assay. Initial chromatid breaks were measured by counting the number of chromatid breaks and isochromatid breaks immediately after prematurely chromosome condensed by Calyculin-A. A dose-dependent increase in radiation-induced chromatid / isochromatid breaks was observed in G2 phase. A good relationship was found between cell survival and chromatid breaks. This study implied that low LET radia- tion-induced chromatid / isochromatid breaks can be possibly used as a good predictor of radiosensitivity of SMMC-7721 hepatoma cells
also it could be used to design radiotherapy schedule for liver cancer patients.