PA-X is an avian virulence factor in H9N2 avian influenza virus.

PA-X is an avian virulence factor in H9N2 avian influenza virus.
复制标题

DOI:
10.1099/jgv.0.001531
复制
发表时间:
2021-03
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
Iqbal M
Iqbal M
中科院分区:
其他
文献类型:
--
作者:
Clements AL;Peacock TP;Sealy JE;Lee HM;Hussain S;Sadeyen JR;Shelton H;Digard P;Iqbal M

文献摘要

参考文献

被引文献

相似文献

甲型流感病毒编码几种对毒力和复制具有宿主和毒株特异性影响的辅助蛋白。辅助蛋白PA-X由于PA基因翻译期间的核糖体移码而表达。根据病毒株和宿主物种的特定组合,PA-X被描述为降低或增加毒力和/或病毒复制。在这项研究中,我们着手研究PA-X在H9 N2禽流感病毒中的作用,重点是天然禽类宿主鸡。我们发现,G1谱系A/鸡/巴基斯坦/UDL-01/2008(H9 N2)PA-X在哺乳动物和禽类细胞中诱导了强大的宿主关闭,并增加了哺乳动物但不是禽类细胞中的病毒复制。我们进一步表明,PA-X影响卵内胚胎致死率,并导致鸡体内更快的病毒脱落和广泛的器官传播。总体而言,我们得出结论,PA-X可能作为H9 N2病毒在鸡中的毒力因子,允许更快的复制和更广泛的器官嗜性。
Influenza A viruses encode several accessory proteins that have host- and strain-specific effects on virulence and replication. The accessory protein PA-X is expressed due to a ribosomal frameshift during translation of the PA gene. Depending on the particular combination of virus strain and host species, PA-X has been described as either acting to reduce or increase virulence and/or virus replication. In this study, we set out to investigate the role PA-X plays in H9N2 avian influenza viruses, focusing on the natural avian host, chickens. We found that the G1 lineage A/chicken/Pakistan/UDL-01/2008 (H9N2) PA-X induced robust host shutoff in both mammalian and avian cells and increased virus replication in mammalian, but not avian cells. We further showed that PA-X affected embryonic lethality in ovo and led to more rapid viral shedding and widespread organ dissemination in vivo in chickens. Overall, we conclude PA-X may act as a virulence factor for H9N2 viruses in chickens, allowing faster replication and wider organ tropism.
PA-X C 末端的 20 个氨基酸与甲型流感病毒复制和致病性增强相关
DOI: 10.1099/vir.0.000143
发表时间: 2015-08
期刊: The Journal of general virology
影响因子: --
作者:
Gao H;Sun H;Hu J;Qi L;Wang J;Xiong X;Wang Y;He Q;Lin Y;Kong W;Seng LG;Pu J;Chang KC;Liu X;Liu J;Sun Y
通讯作者: Sun Y
流感A病毒表达中使用的核糖体框架发生在序列UCC_UUU_CGU内,并且位于+1方向。
DOI: 10.1098/rsob.120109
发表时间: 2012-10
期刊: Open biology
影响因子: 5.8
作者:
Firth AE;Jagger BW;Wise HM;Nelson CC;Parsawar K;Wills NM;Napthine S;Taubenberger JK;Digard P;Atkins JF
通讯作者: Atkins JF
DOI: 10.1128/jvi.01173-20
发表时间: 2020-09-29
影响因子: 5.4
作者:
Clements AL;Sealy JE;Peacock TP;Sadeyen JR;Hussain S;Lycett SJ;Shelton H;Digard P;Iqbal M
通讯作者: Iqbal M
DOI: 10.1128/jvi.00954-16
发表时间: 2016-08-01
影响因子: 5.4
作者:
Hayashi, Tsuyoshi;Chaimayo, Chutikarn;Takimoto, Toru
通讯作者: Takimoto, Toru
DOI: 10.1371/journal.ppat.1007518
发表时间: 2019-01-01
期刊: PLOS PATHOGENS
影响因子: 6.7
作者:
Machkovech, Heather M.;Bloom, Jesse D.;Subramaniam, Arvind R.
通讯作者: Subramaniam, Arvind R.