Mobile version of Hanspub

文章引用说明 更多>> (返回到该文章)

G. L. Semenza. Defining the role of hypoxia-inducible factor 1 in cancer biology and therapeutics. Oncogene, 2010, 29(5): 625- 634.


  • 标题: 重组人血管内皮抑素联合放疗对肺腺癌A549细胞TGF-β1、HIF-1α表达的影响Effect of Recombinant Endostatin in Combination with Radiotherapy on the Expression of TGF-β1 and HIF-1α in Lung Adenocarcinoma Cell A549

    作者: 介芳芳, 曹德东, 戈伟, 徐细明, 李长虎, 杨芳, 黄玉, 刘梁, 郑永法

    关键字: 重组人血管内皮抑素, 放射治疗, 转化生长因子-β1, 乏氧诱导因子-1α, 肺腺癌Endostar; Radiotherapy; Transforming Growth Factor-Beta 1; Hypoxia Induced Factor-1α; Lung Adenocarcinoma

    期刊名称: 《Asian Case Reports in Oncology》, Vol.1 No.2, 2012-10-31

    摘要: 通过观察Endostar联合放疗对肺腺癌A549细胞增值及TGF-β1、HIF-1α表达的影响,初步探讨重组血管内皮抑素的放疗增敏机制。方法:将培养至对数生长期的A549细胞分为对照组、单纯放疗组、恩度组、联合组,检测各组A549细胞增殖率及TGF-β1、HIF-1α蛋白和mRNA表达情况。结果:1) 除对照组外,各组细胞的增殖随时间的改变都受到不同程度的抑制,以联合组最为明显,差异具有统计学意义(p ;2) 处理后各组A549细胞TGF-β1、HIF-1α的分泌下降,24 h以放疗组及联合组TGF-β1、HIF-1α表达量明显下降 (p ;3) PCR扩增后,各处理组 TGF-β1、HIF-1α mRNA的表达随着时间变化均表现出下降趋势,联合组在24 h差异有显著统计学意义(p 。结论:恩度联合放疗可显著抑制肺腺癌A549细胞增殖及TGF-β1、HIF-1α的表达,恩度可能通过下调TGF-β1、HIF-1α的表达进而发挥放疗增敏作用。 To observe the effect of Endostar combined with Radiotherapy on the expression of Transforming Growth Factor-beta 1 (TGF-β1) and Hypoxia-induced factor-1 (HIF-1α) in lung adenocarcinoma A549 cells and to discuss the possible mechanisms. Methods: To culture the A549 cell, when the cells achieve Logarithmic phase and there are four groups: Control group; Endostar group; Radiotherapy group; Endostar in combination with Radiotherapy. Cell proliferate rate was measured by CCK8, and the expression level of TGF-beta 1 and HIF-1α protein and mRNA of A549 cells in each group were examined by ELISA and PCR. Result: 1) Besides control group, the proliferation of tumor cells in each group are subject to different degree of inhibition. Compared with control and Endostar groups, there is a significant difference of proliferate inhibition in Endostar combined with Radiotherapy group (p β1 and HIF-1 of A549 cells in each group appears to be declining differently. The Radiotherapy group and combined group have a significant difference in cell proliferation at 24 hours, compared to control group (p β1 and HIF-1α mRNA over time (0 - 24 hours) compared with the control group, all treatment groups showed a decreasing trend. After 24 hours of treatment, Compared with control group and Endostar group, the difference in the combined group was statistically sig- nificant (p Conclusion: Endostar combined with Radiotherapy could significantly enhance the inhibition of proliferate of cells and expressions of TGF-β1 and HIF-1α in tumor cells. Thus enhance the inhibition of tumor angio- genesis and metastatic.