REN Qing-lan, et al. Radiosensitization effect of arsenic trioxide on human lung cancer cell line A2[J]. Journal of Chongqing Medical University, 2011,36(2):156-159.
REN Qing-lan, et al. Radiosensitization effect of arsenic trioxide on human lung cancer cell line A2[J]. Journal of Chongqing Medical University, 2011,36(2):156-159. DOI: 10.13406/j.cnki.cyxb.2011.02.031.
Objective:To explore the effect of arsenic trioxide on radiosensitivity in human lung cancer cell line A2.Methods: There were four groups in the study:control group(untreated group)
As2O3 group(1.0 μmol/L As2O3)
irradiation group
As2O3+ irradiation group.Cellular response to irradiation was evaluated by the colony forming test and MTT assay;Flow cytometry was used to determined the Bcl-2 protein expression and cell cycle.Results: As2O3 could induced a G2/M cell cycle arrest.As2O3 + irradiation could significantly decreased the proliferation rate(vs As2O3 group or irradiation group
P<0.01).As2O3 significantly decreased the expression of Bcl-2 in irradiated human lung cancer cell line A2(vs As2O3 group or irradiation group
P<0.01).Conclusion: Arsenic trioxide could sensitize the human lung cancer cell A2 to ionizing irradiation.This effect is probably caused by increasing the rate of G2/M cells before irradiation and the apoptosis rate of A2 cells after irradiation.
关键词
三氧化二砷人肺癌细胞株A2放射敏感性
Keywords
arsenic trioxidehuman lung cancer cell line A2radiosensitivity