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PLoS Pathog:禽流感病毒H5N1发病机制研究取得重要进展

2018-03-08 杨力明 江虎军 自然科学基金委员会

在国家自然科学基金项目(项目编号:81425001)等资助下,中日友好医院/首都医科大学曹彬教授团队与英国帝国理工学院Wendy Barclay(温迪?巴克利)教授团队合作,发现高致病性禽流感病毒H5N1在髓系固有免疫细胞内的快速复制是驱动炎症因子风暴产生的重要因素。研究成果以“Internal genes of a highly pathogenic H5N1 influenza virus d


在国家自然科学基金项目(项目编号:81425001)等资助下,中日友好医院/首都医科大学曹彬教授团队与英国帝国理工学院Wendy Barclay(温迪?巴克利)教授团队合作,发现高致病性禽流感病毒H5N1在髓系固有免疫细胞内的快速复制是驱动炎症因子风暴产生的重要因素。研究成果以“Internal genes of a highly pathogenic H5N1 influenza virus determine high viral replication in myeloid cells and severe outcome of infection in mice”(高致病性禽流感病毒H5N1内部基因片段决定其在髓系细胞内的高复制速率进而决定其在小鼠中的高致病力)为题,于2018年1月4日在PLoS Pathogens(《公共科学图书馆·病原体》)上在线发表。中日友好医院/首都医科大学曹彬教授和英国帝国理工学院Wendy Barclay(温迪?巴克利)教授为该文章共同通讯作者,博士生李辉和Konard Bradley(康拉德-布兰得利)为共同第一作者。
 
高致病性禽流感病毒H5N1在人群中引起散发感染十余年,因其感染后高病死率而引起广泛关注。研究数据表明过度免疫反应导致的炎症因子风暴是H5N1感染较高病死率的重要原因。探讨禽流感病毒感染后导致炎症因子风暴的机制对于寻找治疗重症流感免疫损伤药物具有重要意义。
 
该研究利用反向遗传技术,发现H5N1内部基因片段是导致实验小鼠感染该病毒后大量炎症因子产生的重要决定因素之一。相对人流感病毒株H1N1、H3N2内部基因片段构建的重组流感病毒,具有H5N1内部基因片段的流感病毒株在髓系细胞GM-DCs具有较快的复制速率,进而驱动大量的炎症因子产生。
 
该研究发现禽流感病毒在髓系固有免疫细胞内的快速复制是驱动炎症因子风暴的重要因素,为未来寻找重症流感炎症因子风暴所致免疫损伤提供了思路。
 

 
图. 高致病性禽流感病毒H5N1内部基因片段决定其在髓系细胞内的高复制速率,进而决定其在小鼠中的高致病力

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    2018-06-05 智智灵药
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    2018-03-09 1209e435m98(暂无昵称)

    学习了.谢谢分享

    0

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    2018-03-08 清风拂面

    谢谢分享学习

    0

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