Baculovirus Surface Display of Hemagglutinin and Neuraminidase for Monoclonal Antibody Production

Author:

Lo Huei-Ru,Wu Chun-Pei,Jan Jia-Tsrong,Chao Yu-Chan,Tsai Chih-Hsuan

Abstract

AbstractThe H7N9 influenza virus that emerged in 2013 is a dangerous infectious disease with a high mortality rate of up to 40%. Developing effective monoclonal antibodies (mAbs) to detect and treat the infection of this virus is therefore critical. In this study, we expressed hemagglutinin (HA) and neuraminidase (NA) of H7N9 (A/Anhui/1/2013) on the surface of baculovirus (i.e., HA7-Bac and NA9-Bac). Our results showed that both HA or NA proteins displayed on HA7-Bac or NA9-Bac could well maintain their native biological function. Mice antisera derived from the injections of either HA7-Bac- or NA9-Bac exhibited high inhibitory activity in the hemagglutination and neuraminidase assay of H7N9 virus. mAbs generated by immunization with HA7-Bac exhibited high neutralizing activity against H7N9 virus infectivity in cell assays, whereas mAbs generated by immunization with NA9-Bac inhibited neuraminidase activity. These results proved that baculovirus display of HA and NA from H7N9 could be convenient agents to generate neutralizing mAbs against virus infection.

Publisher

Cold Spring Harbor Laboratory

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