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| 1 | 人着色性干皮病基因D对HepG2细胞Mdm2和Mdm4表达的影响显示文摘目的:探讨人剪切修复基因着色性干皮病基因D(xeroderma pigmentosum D,XPD)对肝癌细胞鼠双微体2(murine double minute 2,Mdm2)和鼠双微体4(murine double minute 4,Mdm4)表达的影响。方法:用脂质体转染法将重组质粒pEGFP-N2/XPD和空载质粒pEGFP-N2转染进入人肝癌细胞株HepG2,实验分为3组:(1)空白对照组;(2)pEGFP-N2组;(3)pEGFP-N2/XPD组。用MTT法观察细胞的增殖活力;用流式细胞术检测细胞周期和凋亡率;用RT-PCR和Western blotting检测XPD、Mdm2、Mdm4和P53表达量的变化。结果:MTT结果显示,重组质粒pEGFP-N2/XPD的转染抑制了肝癌细胞的增殖活力;流式细胞术结果显示,重组质粒pEGFP-N2/XPD的转染引起了G1期细胞增加,S期减少,凋亡率增加。RT-PCR和Western blotting检测发现,重组质粒pEGFP-N2/XPD的转染使得XPD表达增高,同时使得Mdm2和Mdm4表达降低,P53表达增高。结论:XPD能下调肝癌细胞中Mdm2和Mdm4的表达,上调P53表达,并能抑制肝癌细胞增殖及诱导其凋亡。 | 丁浩 张吉翔 | 2014 | 中国病理生理杂志2014，30，1： | 2 |
| 2 | Targeted therapy: tailoring cancer treatment显示文摘Targeted therapies include small-molecule inhibitors and monoclonal antibodies, have made treatment more tumor-specific and less toxic, and have opened new possibilities for tailoring cancer treatment. Nevertheless, there remain several challenges to targeted therapies, including molecular identification, drug resistance, and exploring reliable biomarkers. Here, we present several selected signaling pathways and molecular targets involved in human cancers including Aurora kinases, PI3K/mTOR signaling, FOXO-FOXM1 axis, and MDM2/MDM4-p53 interaction. Understanding the molecular mechanisms for tumorigenesis and development of drug resistance will provide new insights into drug discovery and design of therapeutic strategies for targeted therapies. | Min Yan Quentin Qiang Liu | 2013 | Chinese Journal of Cancer2013，32，7： | 0 |
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