摘要
为研究NS基因对流感病毒致病力的影响,本实验以一株H5N1禽流感病毒(AIV)A/duck/Guangxi/35/2001(DK/35)为亲本病毒株,利用反向遗传技术,以我国首例甲型H1N1流感病毒分离株A/Sichuan/01/2009(SC/01)的NS基因对DK/35株进行单基因替换,拯救出一株重组H5N1 AIV。动物实验表明,SC/01株的NS基因能够使DK/35株对小鼠的致病力减弱。我们推测SC/01株的NS基因主要是通过调节宿主干扰素的产生致弱DK/35株的毒力。进一步对致弱机制进行系统研究,为生产弱毒活疫苗提供一种新的策略。
To study the role of NS on the pathogenicity of influenza A virus, we generated a reassortant virus containing the NS gene from the first 2009 H1N1 isolate in China, A/Sichuan/01/2009(SC/01), in the background of a H5N1 avian influenza virus (AIV), A/duck/Guangxi/35/2001(DK/35), using reverse genetics. Mouse experiment showed that SC/01 NS gene reduced the virulence of DK/35. We speculated that SC/01 NS gene attenuated the pathogenicity of DK/35 by influencing interferon production. Our data emphasizes the need for further study, which provided a novel strategy and foundation for the generation of live attenuated virus vaccine.
出处
《中国预防兽医学报》
CAS
CSCD
北大核心
2014年第3期243-245,共3页
Chinese Journal of Preventive Veterinary Medicine
基金
973专项2011CD505000