A cell-based screening system for influenza A viral RNA transcription/replication inhibitors.

A cell-based screening system for influenza A viral RNA transcription/replication inhibitors.
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DOI:
10.1038/srep01106
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Kawaoka, Yoshihiro
Kawaoka, Yoshihiro
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ozawa, Makoto;Shimojima, Masayuki;Goto, Hideo;Watanabe, Shinji;Hatta, Yasuko;Kiso, Maki;Furuta, Yousuke;Horimoto, Taisuke;Peters, Noel R.;Hoffmann, F. Michael;Kawaoka, Yoshihiro

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尽管有两类抗病毒药物(NA 抑制剂和 M2 离子通道阻滞剂)被许可用于流感治疗,但双耐药突变体(包括高致病性 H5N1 病毒)已经出现。因此,需要替代治疗方案。甲型流感病毒 RNA (vRNA) 转录/复制是抗病毒开发的一个有前景的靶点,因为它对于病毒复制至关重要。因此,需要一种有效且可靠的方法来鉴定vRNA转录/复制抑制剂。在这里,我们通过建立稳定表达流感病毒核糖核蛋白复合物(vRNP)的细胞系来开发基于细胞的筛选系统。使用该细胞系筛选化合物库使我们能够通过使用病毒样 RNA 的报告蛋白表达作为读数和体外病毒复制来鉴定抑制 vRNA 转录/复制的化合物。 vRNP 表达细胞具有作为简单方便的高通量筛选 (HTS) 系统的潜力,因此有望鉴定各种 RNA 病毒的 vRNA 转录/复制抑制剂,尤其是初级筛选。
Although two classes of antivirals, NA inhibitors and M2 ion channel blockers, are licensed for influenza treatment, dual resistant mutants, including highly pathogenic H5N1 viruses, have appeared. Alternative treatment options are, therefore, needed. Influenza A viral RNA (vRNA) transcription/replication is a promising target for antiviral development, since it is essential for virus replication. Accordingly, an efficient and reliable method to identify vRNA transcription/replication inhibitors is desirable. Here, we developed a cell-based screening system by establishing a cell line that stably expresses influenza viral ribonucleoprotein complex (vRNP). Compound library screening using this cell line allowed us to identify a compound that inhibits vRNA transcription/replication by using reporter protein expression from virus-like RNA as a readout and virus replication in vitro. vRNP-expressing cells have potential as a simple and convenient high-throughput screening (HTS) system, and, thus, are promising to identify vRNA transcription/replication inhibitors for various RNA viruses, especially for primary screens.
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