Study on the Protective Immunity Induced by Pseudotyped Baculovirus Expressing the E Protein of Tembusu Virus in Ducklings

文献类型： 外文期刊

第一作者： Ni, Zheng

作者： Ni, Zheng;Yun, Tao;Chen, Liu;Ye, Weicheng;Hua, Jionggang;Zhu, Yinchu;Zhang, Cun;Liu, Guangqing

作者机构：

关键词： DTMUV; E protein; protection; recombinant baculovirus; subunit vaccine

期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）

ISSN：

年卷期： 2023 年 14 卷 7 期

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收录情况： SCI

摘要： The Duck Tembusu virus (DTMUV), a pathogenic flavivirus, has been causing significant economic losses in the Chinese poultry industry since 2010. This virus can severely decrease egg production and inhibit the growth of laying ducks and ducklings. While many vaccines have been developed to prevent DTMUV infection, fresh outbreaks continue to occur, as few effective vaccines are available. The E glycoprotein of DTMUV is the primary target for inducing protective immunity in the natural host. Therefore, we conducted an investigation and successfully developed a recombinant baculovirus containing the DTMUV E gene. Ducklings were then vaccinated with the purified protein derived from this virus as a potential vaccine candidate. Our findings demonstrated that the E glycoprotein of DTMUV was highly expressed in Sf9 cells. The vaccination of ducklings with the recombinant baculovirus Bac-E resulted in the induction of strong humoral and cellular immune responses. Most significantly, we observed that the vaccine provided 100% protective immunity against lethal challenges with the DTMUV YY5 strain.

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