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Nat Biotechnol:新方法增加禽流感病毒研究安全性

2013-08-29 koo bio360

日前,来自美国西奈山医学院等机构的科学家们发明了一种可增加禽流感病毒实验室研究的安全性的新方法。这将进一步加强“功能获得性”流感病毒研究的生物安全性,降低实验人员在接触病毒过程中发生病毒感染的风险。【原文下载】 虽然禽流感病毒主要是通过直接接触鸟类的方式发生传播感染,但是目前这些禽流感病毒还不能有效地在人际间传播。科学家最近通过对雪貂的研究发现,某些基因突变可能导致某些禽



日前,来自美国西奈山医学院等机构的科学家们发明了一种可增加禽流感病毒实验室研究的安全性的新方法。这将进一步加强“功能获得性”流感病毒研究的生物安全性,降低实验人员在接触病毒过程中发生病毒感染的风险。【原文下载

虽然禽流感病毒主要是通过直接接触鸟类的方式发生传播感染,但是目前这些禽流感病毒还不能有效地在人际间传播。科学家最近通过对雪貂的研究发现,某些基因突变可能导致某些禽流感病毒通过空气在雪貂之间有限的传播。这些“功能获得性”流感病毒相关研究的目的是为了帮助预防全球性流行病,但是人们却对这些流感病毒株可能发生有意或无意地泄漏表示出忧虑。

虽然这些研究的开展有具体的安全准则作指导,但是研究人员提出了一种方法,能进一步保证实验室内外的安全性。不同物种会表达不同的microRNA。



研究人员推断,如果带有microRNA标靶的流感病毒感染了可表达该种microRNA的物种细胞,那么流感病毒的表达和复制将停止。他们发现了一种会在人类和小鼠肺部而不在鼬肺部表达的microRNA,然后把microRNA标靶插入流感病毒的基因序列。经过此番改造的流感病毒可在动物间传播,但受感染小鼠却没有发病症状。

研究人员警告称,目前仍不清楚这种病毒是否对人类无害,但该方法可以为实验室病原体的生物防护多添加一层物理屏障。

原始出处:

Ryan A Langlois, Randy A Albrecht, Brian Kimble, Troy Sutton, Jillian S Shapiro, Courtney Finch, Matthew Angel, Mark A Chua, Ana Silvia Gonzalez-Reiche, Kemin Xu, Daniel Perez, Adolfo García-Sastre & Benjamin R tenOever. MicroRNA-based strategy to mitigate the risk of gain-of-function influenza studies. Nature Biotechnology, 11 August 2013; doi:10.1038/nbt.2666 【原文下载

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    2014-03-04 sunylz
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    2014-06-07 shock_melon
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    2013-10-27 liye789132251
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    2014-05-04 cathymary
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