现代肿瘤医学
現代腫瘤醫學
현대종류의학
JOURNAL OF MODERN ONCOLOGY
2014年
8期
1752-1756
,共5页
郭嘉%陈鑫%席儒兴%常雨薇%张轩薇%张晓智
郭嘉%陳鑫%席儒興%常雨薇%張軒薇%張曉智
곽가%진흠%석유흥%상우미%장헌미%장효지
胶质瘤%放射敏感性%AEG - 1%shRNA%基因治疗
膠質瘤%放射敏感性%AEG - 1%shRNA%基因治療
효질류%방사민감성%AEG - 1%shRNA%기인치료
glioma%radiosensitivity%AEG - 1%shRNA%gene therapy
目的:探讨 AEG -1基因表达下调对人脑胶质瘤细胞 U373放射敏感性的影响。方法:以人 MTDH/AEG -1(NM -178812)为靶标设计 shRNA 序列,慢病毒介导将 AEG -1 shRNA 转染至胶质瘤 U373细胞中。荧光定量 PCR 及 Western blot 测定转染前后 AEG -1 mRNA 及蛋白的表达;克隆形成实验评估 AEG -1基因下调后 U373细胞放射敏感性;流式细胞术检测 AEG -1下调后 U373细胞凋亡及细胞周期分布。结果:通过慢病毒介导的 shRNA 转染,构建了 AEG -1表达稳定下调的 U373- shAEG -1细胞系,有效抑制了胶质瘤U373细胞中 AEG -1的表达(抑制率84%,P ﹤0.05),增加了凋亡细胞的比例(13.07%±0.28%,P ﹤0.05),并提高细胞周期中 S 期细胞比例(58.18%,P ﹤0.01),且 AEG -1基因表达下调后 U373细胞的 D0值(1.60Gy)和 Dq 值(1.06Gy)均明显低于空白对照组及阴性对照组细胞(P ﹤0.05)。结论:下调 AEG -1可以增强人脑胶质瘤 U373细胞的放射敏感性,其机制与诱导细胞凋亡及干预细胞周期分布有关。
目的:探討 AEG -1基因錶達下調對人腦膠質瘤細胞 U373放射敏感性的影響。方法:以人 MTDH/AEG -1(NM -178812)為靶標設計 shRNA 序列,慢病毒介導將 AEG -1 shRNA 轉染至膠質瘤 U373細胞中。熒光定量 PCR 及 Western blot 測定轉染前後 AEG -1 mRNA 及蛋白的錶達;剋隆形成實驗評估 AEG -1基因下調後 U373細胞放射敏感性;流式細胞術檢測 AEG -1下調後 U373細胞凋亡及細胞週期分佈。結果:通過慢病毒介導的 shRNA 轉染,構建瞭 AEG -1錶達穩定下調的 U373- shAEG -1細胞繫,有效抑製瞭膠質瘤U373細胞中 AEG -1的錶達(抑製率84%,P ﹤0.05),增加瞭凋亡細胞的比例(13.07%±0.28%,P ﹤0.05),併提高細胞週期中 S 期細胞比例(58.18%,P ﹤0.01),且 AEG -1基因錶達下調後 U373細胞的 D0值(1.60Gy)和 Dq 值(1.06Gy)均明顯低于空白對照組及陰性對照組細胞(P ﹤0.05)。結論:下調 AEG -1可以增彊人腦膠質瘤 U373細胞的放射敏感性,其機製與誘導細胞凋亡及榦預細胞週期分佈有關。
목적:탐토 AEG -1기인표체하조대인뇌효질류세포 U373방사민감성적영향。방법:이인 MTDH/AEG -1(NM -178812)위파표설계 shRNA 서렬,만병독개도장 AEG -1 shRNA 전염지효질류 U373세포중。형광정량 PCR 급 Western blot 측정전염전후 AEG -1 mRNA 급단백적표체;극륭형성실험평고 AEG -1기인하조후 U373세포방사민감성;류식세포술검측 AEG -1하조후 U373세포조망급세포주기분포。결과:통과만병독개도적 shRNA 전염,구건료 AEG -1표체은정하조적 U373- shAEG -1세포계,유효억제료효질류U373세포중 AEG -1적표체(억제솔84%,P ﹤0.05),증가료조망세포적비례(13.07%±0.28%,P ﹤0.05),병제고세포주기중 S 기세포비례(58.18%,P ﹤0.01),차 AEG -1기인표체하조후 U373세포적 D0치(1.60Gy)화 Dq 치(1.06Gy)균명현저우공백대조조급음성대조조세포(P ﹤0.05)。결론:하조 AEG -1가이증강인뇌효질류 U373세포적방사민감성,기궤제여유도세포조망급간예세포주기분포유관。
To study the effect of AEG - 1 down - regulation on the radiosensitivity of U373 cells in vitro. Methods:We designed the shRNA that targets MTDH/ AEG - 1(NM 178812)and then transfected it into U373 cells via lentivirus. The AEG - 1 mRNA expression was determined using real - time quantitative PCR,and the protein was determined by Western blot. The radiosensitivity of U373 was evaluated with colony formation assay. Flow cytome-try was used to analyze the apoptosis and cell cycle. Results:Down - regulation of AEG - 1 expression could enhance the radiosensitivity of U373 cells(inhibition ratio 84% ,P ﹤ 0. 05). Colony formation assay showed an enhanced radio-sensitivity of transfected U373 cells. Flow cytometry assay showed that AEG - 1 down - regulation could promote ap-optosis in U373 cells(13. 07% ± 0. 28% ,P ﹤ 0. 05),and accumulate S - phase cells(58. 18% ,P ﹤ 0. 01). Conclu-sion:Down - regulation of AEG - 1 expression can enhance the radiosensitivity of U373 cells in vitro,which might re-sult from the promoting apoptosis and intervening cell cycle distribution.