Chimeric rabies glycoprotein with a transmembrane domain and cytoplasmic tail from Newcastle disease virus fusion protein incorporates into the Newcastle disease virion at reduced levels
文献类型: 外文期刊
第一作者: Yu, Gui Mei
作者: Yu, Gui Mei;Zu, Shu Long;Zhou, Wei Wei;Wang, Xi Jun;Shuai, Lei;Wang, Xue Lian;Ge, Jin Ying;Bu, Zhi Gao
作者机构:
关键词: Newcastle disease virus;antibody response;chimeric rabies glycoprotein;rabies virus;viral vector
期刊名称:JOURNAL OF VETERINARY SCIENCE ( 影响因子:1.672; 五年影响因子:1.904 )
ISSN: 1229-845X
年卷期: 2017 年 18 卷
页码:
收录情况: SCI
摘要: Rabies remains an important worldwide health problem. Newcastle disease virus (NDV) was developed as a vaccine vector in animals by using a reverse genetics approach. Previously, our group generated a recombinant NDV (LaSota strain) expressing the complete rabies virus G protein (RVG), named rL-RVG. In this study, we constructed the variant rL-RVGTM, which expresses a chimeric rabies virus G protein (RVGTM) containing the ectodomain of RVG and the transmembrane domain (TM) and a cytoplasmic tail (CT) from the NDV fusion glycoprotein to study the function of RVG's TM and CT. The RVGTM did not detectably incorporate into NDV virions, though it was abundantly expressed at the surface of infected BHK-21 cells. Both rL-RVG and rL-RVGTM induced similar levels of NDV virus-neutralizing antibody (VNA) after initial and secondary vaccination in mice, whereas rabies VNA induction by rL-RVGTM was markedly lower than that induced by rL-RVG. Though rL-RVG could spread from cell to cell like that in rabies virus, rL-RVGTM lost this ability and spread in a manner similar to the parental NDV. Our data suggest that the TM and CT of RVG are essential for its incorporation into NDV virions and for spreading of the recombinant virus from the initially infected cells to surrounding cells.
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