Abstract
Trafficking of viral glycoprotein to the surface of infected-cells results in syncytium formation in Newcastle disease virus (NDV)-infected baby hamster kidney (BHK)cells. Hydnellum concrescens, known as a medicinal mushroom, inhibited not only syncytium formation, but also trafficking of glycoprotein, hemagglutinin-neuramidase (HN) to the cell-surface. Viral glycoprotein is processed within the endoplasmic reticulum during routing into surface. Fungal extracts showed inhibitory activities (IC5015 μg/ml) against α-glucosidase. This suggested that H. concrescens extracts inhibited the cell-surface expression of NDV-HN glycoprotein without significantly affecting HN glycoprotein synthesis in NDV-infected BHK cells. Key words: α-Glucosidase inhibitor, Hydnellum concrescens, trafficking inhibitor.
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