A recombinant influenza virus vaccine expressing the F protein of respiratory syncytial virus.

A recombinant influenza virus vaccine expressing the F protein of respiratory syncytial virus.
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DOI:
10.1007/s00705-013-1932-z
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发表时间:
2014-05
影响因子:
2.7
通讯作者:
Kawaoka, Yoshihiro
Kawaoka, Yoshihiro
中科院分区:
医学4区
文献类型:
--
作者:
Fonseca, Wendy;Ozawa, Makoto;Hatta, Masato;Orozco, Esther;Martinez, Maximo B.;Kawaoka, Yoshihiro

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流感和呼吸道合胞病毒(RSV)感染是世界上最常见的人类呼吸道疾病之一。先前,我们用一个报告基因的编码序列替换编码病毒RNA聚合酶亚基之一的PB2基因的编码序列,从而开发出一种复制能力不强的流感病毒。在这里,我们产生了表达RSVF蛋白的pb2敲除重组流感病毒(PB2-RSVF病毒),并测试了其作为二价疫苗的潜力。在经PB2-RSVF病毒鼻内免疫的小鼠中,我们检测到高水平的流感病毒抗体,但没有检测到RSV抗体。PB2-RSVF病毒免疫小鼠免受流感病毒的致命攻击,但在RSV攻击时出现严重的体重减轻,表明PB2-RSVF疫苗接种增强了RSV相关疾病。这些结果突出了开发针对流感病毒和呼吸道合胞病毒感染的有效二价疫苗的困难之一。
Infections with influenza and respiratory syncytial virus (RSV) rank high among the most common human respiratory diseases worldwide. Previously, we developed a replication-incompetent influenza virus by replacing the coding sequence of the PB2 gene, which encodes one of the viral RNA polymerase subunits, with that of a reporter gene. Here, we generated a PB2-knockout recombinant influenza virus expressing the F protein of RSV (PB2-RSVF virus) and tested its potential as a bivalent vaccine. In mice intranasally immunized with the PB2-RSVF virus, we detected high levels of antibodies against influenza virus, but not RSV. PB2-RSVF virus-immunized mice were protected from a lethal challenge with influenza virus but experienced severe body weight loss when challenged with RSV, indicating that PB2-RSVF vaccination enhanced RSV-associated disease. These results highlight one of the difficulties of developing an effective bivalent vaccine against influenza virus and RSV infections.
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发表时间: 2000-12-08
期刊: VACCINE
影响因子: 5.5
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