Influenza A(H7N9) virus gains neuraminidase inhibitor resistance without loss of in vivo virulence or transmissibility.
Influenza A(H7N9) virus gains neuraminidase inhibitor resistance without loss of in vivo virulence or transmissibility.
复制标题
DOI:
10.1038/ncomms3854
复制
发表时间:
2013
影响因子:
16.6
通讯作者:
Bouvier, Nicole M.
中科院分区:
文献类型:
--
作者:
Hai, Rong;Schmolke, Mirco;Leyva-Grado, Victor H.;Thangavel, Rajagowthamee R.;Margine, Irina;Jaffe, Eric L.;Krammer, Florian;Solorzano, Alicia;Garcia-Sastre, Adolfo;Palese, Peter;Bouvier, Nicole M.
Without baseline human immunity to the emergent avian influenza A(H7N9) virus, neuraminidase inhibitors are vital for controlling viral replication in severe infections. An amino acid change in the viral neuraminidase associated with drug resistance, NA-R292K (N2 numbering), has been found in some H7N9 clinical isolates. Here we assess the impact of the NA-R292K substitution on antiviral sensitivity and viral replication, pathogenicity and transmissibility of H7N9 viruses. Our data indicate that an H7N9 isolate encoding the NA-R292K substitution is highly resistant to oseltamivir and peramivir and partially resistant to zanamivir. Furthermore, H7N9 reassortants with and without the resistance mutation demonstrate comparable viral replication in primary human respiratory cells, virulence in mice and transmissibility in guinea pigs. Thus, in stark contrast to oseltamivir-resistant seasonal influenza A(H3N2) viruses, H7N9 virus replication and pathogenicity in these models are not substantially altered by the acquisition of high-level oseltamivir resistance due to the NA-R292K mutation. Some clinical isolates of influenza A(H7N9) virus encode a mutation within neuraminidase that could confer resistance to the only class of drugs active against H7N9. Here, the authors show that this mutation does not affect viral replication and pathogenicity while mediating resistance to antivirals in vivo.
登录
查看更多内容
影响因子:
158.5
作者:
Gao, Rongbao;Cao, Bin;Shu, Yuelong
通讯作者:
Shu, Yuelong
影响因子:
6.7
作者:
Hamelin ME;Baz M;Abed Y;Couture C;Joubert P;Beaulieu E;Bellerose N;Plante M;Mallett C;Schumer G;Kobinger GP;Boivin G
通讯作者:
Boivin G
DOI:
10.1128/aem.16.4.588-594.1968
发表时间:
1968-01-01
期刊:
APPLIED MICROBIOLOGY
影响因子:
--
作者:
GAUSH, CR;SMITH, TF
通讯作者:
SMITH, TF
影响因子:
168.9
作者:
Hu, Yunwen;Lu, Shuihua;Yuan, Zhenghong
通讯作者:
Yuan, Zhenghong
影响因子:
5.4
作者:
Bouvier, Nicole M.;Rahmat, Saad;Pica, Natalie
通讯作者:
Pica, Natalie