DING Weimin, TIAN Jiahe, ZHANG Jinming, et al. Senescence associated β-galactosidase expressed by tumor cells after low-dose-rate β-irradiation[J]. Journal of Radiation Research and Radiation Processing, 2004,22(1):51-55.
DING Weimin, TIAN Jiahe, ZHANG Jinming, et al. Senescence associated β-galactosidase expressed by tumor cells after low-dose-rate β-irradiation[J]. Journal of Radiation Research and Radiation Processing, 2004,22(1):51-55.DOI:
HeLa cells were irradiated with ,32,P radioactive filter papers. Cells expressing senescence associated β-galactosidase(SA-β-Gal) were quantified. And to acquire information about the absolute numbers of SA-β-Gal+ cells and their changing tendency, the rates of cells expressing SA-β-Gal were corrected with cell growth curves. Results show that after low-dose-rate β irradiation, some tumor cells can reverse into mortality stage M,1, or M,2, cells which express SA-β-Gal. Numbers of SA-β-Gal+ cells induced by the irradiation were increased. And in dose rates of 7.5—60cGy/h, more SA-β-Gal+ cells could be induced by the irradiation than higher dose-rate irradiations at the same dose. Moreover, it may indicate that long-term therapeutic effect of internal irradiations could be resulted by induced aging of tumor cells .