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LIN DENG JING YANG XIAO RONG ZHAO XI YUN DENG LIANG ZENG HUAN HUA GU MIN TANG YA CAOCancer Research Institute Xiangya School of Medicine Central South University Xiangya Road Chang-sha Hunan China 《Cell research》2003,(3)
Although previous studies showed that the principal oncoprotein encoded by Epstein-Barr virus, latentmembrane protein 1 (LMP1) 5 could induce the nasopharyngeal carcinoma cells in G_2/M phase increased, littleis known about the target molecules and mechanisms. The present study demonstrated that LMP1 couldinduce the accumulation of p53 protein and upregulate its transactivity in a dose dependent manner, whichresulted in the decrease of the kinase activity of cdc2/cyclin B complex and inducing arrest at G2/M phasethrough the activation of NF-κB and AP-1 signaling pathways, and the effect of NF-κB was more obviousthan that of AP-1. This study provided some significant evidence for further elucidating the molecularmechanisms that LMP1 had effects on the surveillance mechanism of cell cycle and promoting the survivalof transformed cells and tumorigenesis. 相似文献
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