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Journal of Biomolecular Screening
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HA-Pseudotyped Retroviral Vectors for Influenza Antagonist Screening

Shi-Yun Wang

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Ching-Yao Su

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China, Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan, Republic of China

Mengi Lin

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Shao-Yung Huang

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Wen-I Huang

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Cheng-Chi Wang

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China, Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan, Republic of China

Ying-Ta Wu

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Ting-Jen R. Cheng

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Hui-Ming Yu

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Chien-Tai Ren

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Chung-Yi Wu

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China

Chi-Huey Wong

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China, Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan, Republic of China

Yih-Shyun E. Cheng

Genomics Research Center, Academia Sinica, Taipei, Taiwan, Republic of China, ysecheng{at}gate.sinica.edu.tw

Influenza infections are initiated by the binding of the influenza hemagglutinin (HA) and the cellular receptor sialic acids. The binding is followed by internalization, endocytosis, and uncoating to release the influenza genome to the cytoplasm. It is conceivable that specific inhibitors that antagonize any one of these events could prevent the replication of influenza infections. The authors made HA pseudotyped retroviral vectors that express luciferase reporter activities upon transduction to several recipient cells. The transduction of the HA-pseudotype virus particles (HApp) was mediated through the specific interactions between an avian HA and the terminal disaccharides of sialic acid (SA) and galactose (Gal) in {alpha}-2,3 linkage. The HApp-mediated transduction method was used to develop a high-throughput screening assay and to screen for hits from a fermentation extract library. Specific hits that inhibited the HA-mediated but were noninhibitory to the vesicular stomatitis virus—mediated pseudoviral transductions were identified. A few of these hits have anti-influenza activities that prevent the replication of both H1N1 (WSN) and H5N1 (RG14) influenza viruses. ( Journal of Biomolecular Screening 2009:294-302)

Key Words: influenza • hemagglutinin • pseudotype virus • HTS • antiviral

This version was published on March 1, 2009

Journal of Biomolecular Screening, Vol. 14, No. 3, 294-302 (2009)
DOI: 10.1177/1087057108330786
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