LIN Xiaoli, FANG Huasheng, ZHANG Fengqiu, et al. Radio-sensitization of esophageal cancer EC9706 cells to X ray by histone deacetylase inhibiter Trichostatin A[J]. Journal of Radiation Research and Radiation Processing, 2009,27(1):10-14.
LIN Xiaoli, FANG Huasheng, ZHANG Fengqiu, et al. Radio-sensitization of esophageal cancer EC9706 cells to X ray by histone deacetylase inhibiter Trichostatin A[J]. Journal of Radiation Research and Radiation Processing, 2009,27(1):10-14.DOI:
利用流式细胞仪及荧光定量PCR技术,分别检测细胞凋亡率和DNA损伤修复相关基因mRNA表达变化,以探讨曲古菌素A(Trichostatin A, TSA)能否在体外增强食管癌细胞对X射线的敏感性。结果显示,辐射前TSA的处理显著提高了X射线引起的细胞凋亡率(,P,<,0.05);X射线的单独处理显著上调了基因,ATM、XRCC2, 和,Lig4,(8Gy除外)的mRNA水平(,P,<,0.05),TSA单独和TSA联合X射线都下调了,ATM、XRCC2,和,Lig4,的mRNA水平。提示TSA很可能通过下调,ATM,、,Lig4,和,XRCC2, mRNA水平使食管癌细胞对X射线敏感。
Abstract
Cell apoptosis and the expression of DNA damage repair-related genes ,XRCC2,ATM, and ,Lig4, were detected separately by flow cytometry analysis and real-time fluorescence quantitative (RT-PCR), in order to investigate the effect of Trichostatin A(TSA)pre-treatment on the radiosensitivity of esophageal cancer EC9706 cells to X ray in vitro. The results indicate that pre-irradiation exposure to TSA enhances cell apoptotic rate by X ray markedly (,P,<,0.05) and the mRNA levels of ,XRCC2,ATM, and ,Lig4,(except 8Gy)are up-regulated by X ray individually(,P,<,0.05). TSA alone and TSA in combination with X ray all reduce mRNA levels of ,XRCC2,ATM, and ,Lig4,. In conclusions, TSA may radio-sensitize EC9706 cells to X ray by reducing mRNA levels of ,XRCC2,ATM, and ,Lig4,.
关键词
曲古菌素A食管癌细胞X射线辐射敏感性凋亡
Keywords
Trichostatin A (TSA)Esophagealcancer cellX rayRadio-sensitivityApoptosis