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PNAS:日本学者建立新质粒反向遗传学系统

2017-04-05 佚名 生物帮

日前,国际著名学术期刊《美国国家科学院院刊》杂志在线发表了日本大阪大学微生物疾病研究所Takeshi Kobayashi研究员的一篇研究论文,论文报道了一种新型基于质粒的反向遗传学系统。轮状病毒是引发严重腹泻的最常见原因之一,每年都会夺去数十万婴儿的性命,虽然目前的疫苗能有效预防轮状病毒的恶化,然而目前的技术手段无法分析轮状病毒如何在细胞中侵入和复制的。Takeshi Kobayashi说,“反向

日前,国际著名学术期刊《美国国家科学院院刊》杂志在线发表了日本大阪大学微生物疾病研究所Takeshi Kobayashi研究员的一篇研究论文,论文报道了一种新型基于质粒的反向遗传学系统。

轮状病毒是引发严重腹泻的最常见原因之一,每年都会夺去数十万婴儿的性命,虽然目前的疫苗能有效预防轮状病毒的恶化,然而目前的技术手段无法分析轮状病毒如何在细胞中侵入和复制的。

Takeshi Kobayashi说,“反向遗传学能帮助我们获得人工改造的病毒。使用反向遗传学,我们可以令一个基因发生突变,然后观察这对病毒的影响”。

目前反向遗传学已经被用于了许多种病毒研究中,用以分析病毒繁殖的条件,但是要针对像是轮状病毒这样的多片段RNA病毒细胞并不容易,这一研究组通过两个病毒蛋白:FAST和VV capping enzyme解决了这个问题,他们将这两种蛋白加入到质粒系统中,利用其优势,突变了轮状病毒的单个蛋白:NSP1,结果表明这可以减少病毒的复制,从而检验了这一系统。

未来通过进一步在所有蛋白中进行全面检测,研究人员希望能找到令轮状病毒成为严重公共威胁的关键决定因子,“我们希望可以修改轮状病毒的繁殖和致病性,”Kobayashi说。

Kobayashi对于这一质粒反向遗传学系统充满信心,“因为没有人可以人工合成轮状病毒,因此我们对这种病毒的复制和发病机制了解甚少”。他希望这一新系统将促进轮状病毒的研究工作,并指导研发更有效的疫苗。

原始出处:

Kanai Y, Komoto S, Kawagishi T,et al.Entirely plasmid-based reverse genetics system for rotaviruses.Proc Natl Acad Sci U S A. 2017 Feb 28

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    2017-12-27 drwjr
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    2017-04-07 tofsw

    学习了谢谢分享

    0

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    2017-04-05 1ddf0692m34(暂无匿称)

    涨知识,学习了

    0

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