Genome sequence of foot-and-mouth disease virus outside the 3A region is also responsible for virus replication in bovine cells
文献类型: 外文期刊
第一作者: Ma, Xueqing
作者: Ma, Xueqing;Li, Pinghua;Sun, Pu;Lu, Zengjun;Bao, Huifang;Bai, Xingwen;Fu, Yuanfang;Cao, Yimei;Li, Dong;Chen, Yingli;Liu, Zaixin;Qiao, Zilin
作者机构:
关键词: Foot-and-mouth disease virus;3A;Host range
期刊名称:VIRUS RESEARCH ( 影响因子:3.303; 五年影响因子:3.445 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The deletion of residues 93-102 in non-structure protein 3A of foot-and-mouth disease virus (FMDV) is associated with the inability of FMDV to grow in bovine cells and attenuated virulence in cattle. Whereas, a previously reported FMDV strain O/HKN/21/70 harboring 93-102 deletion in 3A protein grew equally well in bovine and swine cells. This suggests that changes inFMDV genome sequence, in addition to 93-102 deletion in 3A, may also affect the viral growth phenotype in bovine cells during infection and replication. However, it is nuclear that changes in which region (inside or outside of 3A region) influences FMDV growth phenotype in bovine cells. In this study, to determine the region in FMDV genome affecting viral growth phenotype in bovine cells, we constructed chimeric FMDVs, rvGZSB-HKN3A and rvHN-HKN3A, by introducing the 3A coding region of O/HKN/21/70 into the context of O/SEA/Mya-98 strain O/GZSB/2011 and O Cathay topotype strain O/HN/CHA/93, respectively, since O/GZSB/2011 containing full-length 3A protein replicated well in bovine and swine cells, and O/14N/CHA/93 harboring 93-102 deletion in 3A protein grew poorly in bovine cells. The chimeric virusesrv GZSB-HKN3A and rvHN-HKN3A displayed growth properties and plaque phenotypes similar to those of the parental virus rvGZSB and rv-HN in BHK-21 and primary fetal porcine kidney (FPK) cells. However, rvHN-HKN3A and rv-HN replicated poorly in primary fetal bovine kidney (FBK) cells with no visible plaques, and rvGZSB-HKN3A exhibited lower growth rate and smaller plaque size phenotypes than those of the parental virus in FBK cells, but similar growth properties and plaque phenotypes to those of the recombinant viruses harboring 93-102 deletion in 3A. These results demonstrate that the difference present in FMDV genome sequence outside the 3A coding region also have influence on FMDV replication ability in bovine cells. (C) 2016 Elsevier B.V. All rights reserved.
分类号: R37
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