Tan Yee-Joo, Tham Puay-Yoke, Chan Daphne Z L, Chou Chih-Fong, Shen Shuo, Fielding Burtram C, Tan Timothy H P, Lim Seng Gee, Hong Wanjin
Institute of Molecular and Cell Biology, Proteos, Singapore.
J Virol. 2005 Aug;79(15):10083-7. doi: 10.1128/JVI.79.15.10083-10087.2005.
Here we analyzed the gene expression profile of cells that stably express the severe acute respiratory syndrome coronavirus (SARS-CoV) 3a protein to determine its effects on host functions. A lung epithelial cell-line, A549, was chosen for this study because the lung is the primary organ infected by SARS-CoV and fatalities resulted mainly from pulmonary complications. Our results showed that the expression of 3a up-regulates the mRNA levels of all three subunits, Aalpha, Bbeta, and gamma, of fibrinogen. Consequently, the intracellular levels as well as the secretion of fibrinogen were increased. We also observed increased fibrinogen levels in SARS-CoV-infected Vero E6 cells.
在此,我们分析了稳定表达严重急性呼吸综合征冠状病毒(SARS-CoV)3a蛋白的细胞的基因表达谱,以确定其对宿主功能的影响。本研究选用了肺上皮细胞系A549,因为肺是受SARS-CoV感染的主要器官,且死亡主要由肺部并发症导致。我们的结果表明,3a的表达上调了纤维蛋白原的所有三个亚基Aα、Bβ和γ的mRNA水平。因此,纤维蛋白原的细胞内水平以及分泌量均增加。我们还观察到SARS-CoV感染的Vero E6细胞中纤维蛋白原水平升高。