Browsing by Author "Chan, Daphne Z. L."

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    The Severe Acute Respiratory Syndrome Coronavirus 3a Protein Up-Regulates Expression of Fibrinogen in Lung Epithelial Cells
    (American Society for Microbiology, 2005) 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
    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, A , B , and , 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.