Daphne Genkwa Sieb. et Zucc. Water-Soluble Extracts Act on Enterovirus 71 by Inhibiting Viral Entry

Viruses

Chia-Wen Chang²  Yan-Lii Leu¹ 

[1] Graduate Institute of Natural Products, Chang Gung University, Kweishan, Taoyuan 333, Taiwan;Department of Biochemistry, Chang Gung University, Kweishan, Taoyuan 333, Taiwan;

关键词: attachment assay;    cytopathic effect;    enterovirus 71;    Daphne Genkwa Sieb. et Zucc.;    penetration assay;    yuanhua;   

DOI  :  10.3390/v4040539

来源: mdpi

【 摘 要 】

Dried flowers of Daphne genkwa Sieb. et Zucc. (Thymelaeaceae) are a Chinese herbal medicine used as an abortifacient with purgative, diuretic and anti-inflammatory activities. However, the activity of this medicine against enteroviral infections has not been investigated. The water-extract of dried buds of D. genkwa Sieb. et Zucc. (DGFW) was examined against various strains of enterovirus 71 (EV71) by neutralization assay, and its initial mode of action was characterized by time-of-addition assay followed by attachment and penetration assays. Pretreatment of DGFW with virus abolished viral replication, indicating that DGFW inhibits EV71 by targeting the virus. GFW exerts its anti-EV71 effects by inhibiting viral entry without producing cytotoxic side effects and thus provides a potential agent for antiviral chemotherapeutics.

【 授权许可】

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© 2012 by the authors; licensee MDPI, Basel, Switzerland.