Cell Rep:新研究发现两个人类基因与感染禽流感有关

2018-04-12 周舟 新华社

美国芝加哥大学一个科研团队发现,H5N1禽流感病毒感染人类肺上皮细胞的机制与两个人类基因有关,因此可以通过影响这两个基因来开发抗病毒的新方法。

美国芝加哥大学一个科研团队发现,H5N1禽流感病毒感染人类肺上皮细胞的机制与两个人类基因有关,因此可以通过影响这两个基因来开发抗病毒的新方法。

相关论文10日发表在新一期美国学术刊物《细胞报告》上。研究人员说,H5N1禽流感病毒感染人体时,常通过肺上皮细胞入侵。为了筛查哪些基因与病毒感染机制有关,研究人员利用基因编辑技术制造出约1.9万个存在不同基因变异的肺上皮细胞,让它们接触H5N1病毒。

结果发现,名为SLC35A1的基因负责编码细胞表面的一种受体,病毒可利用这种受体在细胞表面“着陆”。如果把它敲除,病毒就失去了感染宿主的“抓手”。

另一个名为CIC的基因可调节免疫反应,它抑制细胞对外来病原体的免疫应答。如果将它的功能关闭,免疫反应就会更强,有助于抵抗禽流感病毒。

但是论文作者之一、芝加哥大学微生物学助理教授巴拉吉.马尼卡萨米表示,不能靠永久性敲除CIC基因来抗病毒,因为感染结束后,还需要它来关闭免疫反应,否则会引发自身免疫性疾病。

研究人员说,这些发现有助于开发帮助人体抵抗禽流感病毒的新方法。此外,他们还用类似方法让细胞接触其他病原体,发现CIC基因在多种疾病中都发挥重要作用,因此可能在多种疾病的治疗中被作为靶点。

原始出处:

Julianna Han,et al.Genome-wide CRISPR/Cas9 Screen Identifies Host Factors Essential for Influenza Virus Replication.Cell Rep.Volume 23, Issue 2, p596–607, 10 April 2018

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    2018-08-15 维他命
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    2018-04-15 沙漠浪人

    增加免疫力.抵御禽流感

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