Construction and rescue of Muscovy duck-origin goose parvovirus from an infectious clone containing an E-box deletion within the left terminal region
文献类型： 外文期刊
第一作者： Wang, Shao
作者： Wang, Shao;Xiao, Shifeng;Cheng, Xiaoxia;Chen, Shaoying;Zhu, Xiaoli;Lin, Fengqiang;Chen, Shilong;Wang, Shao;Xiao, Shifeng;Cheng, Xiaoxia;Chen, Shaoying;Zhu, Xiaoli;Lin, Fengqiang;Chen, Shilong
作者机构：
关键词： Muscovy duck; Goose parvovirus; E-box motif; Infectious clone
期刊名称：MOLECULAR AND CELLULAR PROBES （ 影响因子：2.365； 五年影响因子：2.386 ）
ISSN： 0890-8508
年卷期： 2018 年 42 卷
页码：
收录情况： SCI
摘要： To obtain a deletion mutant of Muscovy duck-origin goose parvovirus (MDGPV) and to analyze its biological characteristics, the pMDGPVPT plasmid, which contains a full-length DNA infectious clone of the MDGPV PT strain, was used in this study as the template. The E-box at nt 315 of the left inverted terminal repeat sequence (L-ITR) was deleted by overlap extension PCR to obtain the infectious recombinant plasmid p-PT Delta E-315. The p-PT Delta E-315 plasmid was transfected into 9-day-old non-immune Muscovy duck embryos via the yolk sac and the rescued deletion mutant virus r-PT Delta E-315 was generated. Experiments to demonstrate the novel deletion mutant virus' biological characteristics showed that r-PT Delta E-315 can cause typical lesions after infection of Muscovy duck embryos. Compared with its parent strain PT, the virulence of r-PT Delta E-315 and its proliferation ability in Muscovy duck embryos were attenuated, but its ability to replicate in MDEF cells was enhanced. This study laid the foundation for further understanding of the relationship between E-box deletion in the L-ITR and MDGPV virulence.
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