Characterization of a virulent dog-originated rabies virus affecting more than twenty fallow deer (Dama dama) in Inner Mongolia, China
文献类型: 外文期刊
第一作者: Zhu, Hongwei
作者: Zhu, Hongwei;Shao, Xiqun;Ba, Hengxing;Wang, Fengxue;Yang, Yong;Sun, Na;Ren, Jingqiang;Cheng, Shipeng;Wen, Yongjun;Chen, Xiaoyun;Wang, Hualei
作者机构:
关键词: Rabies virus;Fallow deer;Pathogenicity;Genomic analysis;Phylogeny;N-Glycosylation sites
期刊名称:INFECTION GENETICS AND EVOLUTION ( 影响因子:3.342; 五年影响因子:3.188 )
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收录情况: SCI
摘要: Rabies has emerged as a serious problem in the most recent years in northern China. A rabies virus (RABV) isolate, IMDRV-13, was recovered from brain samples of dog-bitten rabid fallow deer (Dama dama) in a farm in Hohhot, Inner Mongolia. We tested the susceptibility of mouse neuroblastoma (MNA) cells and BSR cells as well as that of adult mice to IMDRV-13. The isolate was found to be a virulent isolate with an equivalent pathogenicity index (0.12) and a slight lower neurotropism index (1.07) compared with those of challenge virus standard, CVS-24, which was 0.13 and 1.23, respectively. The complete genome of IMDRV-13 was determined subsequently and found to be 11,924 nucleotides (nt) in length with the same genomic organization as other RABVs. Phylogenetic tree based on complete genome sequences of 43 RABV isolates and strains indicated that IMDRV-13, along with other two isolates in Inner Mongolia, CNM1101C and CNM1104D, clustered within the dog-associated China I clade, which is also the dominant lineage in the current rabies epidemic in China. In addition, sequence analysis of the glycoprotein G identified an amino acid substitution (1338 T338) unique to the IMDRV-13 within antigenic sites III (330-338), this mutation also leads to an additional potential N-glycosylation site (N336), which may represent a useful model to study relationship of N-glycosylation in G protein and specific properties such as pathogenicity or host adaption of RABV. (C) 2014 Elsevier B.V. All rights reserved.
分类号: R1
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