|
Effect of silencing gene CDKN1A on radiosensitivity of radioresistant human nasopharyngeal carcinoma CNE-2R cell
MA Jia-lin,GUO Ya,QU Song,ZHAO Wei,LI Ling,SU Fang,LI Ye,GE Lian-ying,ZHU Xiao-dong
2014, 6 (2):
121-126.
doi: 10.3969/j.issn.1674-5671.2014.02.05
Objective To investigate the relationship between the CDKN1A gene expression and the change of radiosensitivity of human nasopharyngeal carcinoma. Methods Lentiviralvector-mediated RNA interference(LV-CDKN1A-RNAi) targeting was constructed and transfected it to CNE-2R cells.CNE-2R cells transfected with LV-CDKN1A-RNAi were taken as experimental group,those transfectedwith control virus and without any treatment were taken as control group and blank group.The proliferation inhibitory rate was measured by CCK-8 assay.Colony formation assay was performed to determine the radiosensitizing effect.Cell cycle distribution was analyzed by flow cytometry. Results The stably silenced expression of CDKN1A CNE-2R cell line was established.CCK-8 assay showed that the growth of CNE-2R cell of the experimental group was inhibited after 6 Gy irradiating,which was closely related to growth time.The results of colony formation assay showed that the radiosensitivity of CNE-2R cell of the experimental group was more enhance(SER=1.24) than the other groups.Comparing with control group,cell cycle distribution showed that the cell distribution of G0 /G1 and G2 /M cycle in the experiment group was significantly changed before and after 6 Gy irradiating. Conclusions Silencing gene CDKN1A may enhance the radiosensitivity of CNE-2R cells of human nasopharyngeal carcinoma,which maybe used as a thera-peutic target for nasopharyngeal carcinoma.
Related Articles |
Metrics
|