Abstract
Two recombinant rabies viruses overexpressing their glycoprotein (G) were compared in this study, with the overexpressed G inserted between P and M genes (named LBNSE-PM-G), and between the G and L genes (named LBNSE-GL-G), respectively. LBNSE-PM-G produced more G protein and induced stronger apoptosis than LBNSE-GL-G in infected cells, while the amount of virion-incorporated G in LBNSE-PM-G was less than in LBNSE-GL-G. Mice immunized with inactivated LBNSE-PM-G produced lower titers of virus-neutralizing antibody, and this recombinant conferred worse protection than LBNSE-GL-G. Our results suggest that over expressed G gene inserted between G and L, but not between P and M, enhanced the immunogenicity when used as an inactivated rabies vaccine.



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Acknowledgments
This work was supported partially by the National Natural Science Foundation of China (31372419) and Huazhong Agricultural University Scientific & Technological Self-Innovation Foundation (2012RC009 and 2014JQ003) for LZ; National Natural Science Foundation of China (31330078) and Ministry of Agriculture of the People’s Republic of China (Special Fund for Agro-Scientific Research in the Public Interest, 201303042) for ZFF.
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All procedures performed in studies involving animals were in accordance with the ethical standards approved by the Scientific Ethics Committee of Huazhong Agricultural University, China (HZAUMO-2015-016).
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M. T. Navid and Y. Li contributed equally to this paper.
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Navid, M.T., Li, Y., Zhou, M. et al. Comparison of the immunogenicity of two inactivated recombinant rabies viruses overexpressing the glycoprotein. Arch Virol 161, 2863–2870 (2016). https://doi.org/10.1007/s00705-016-2967-8
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DOI: https://doi.org/10.1007/s00705-016-2967-8