Development of a TaqMan loop-mediated isothermal amplification assay for the rapid detection of pigeon paramyxovirus type 1

文献类型： 外文期刊

第一作者： Liang, Ruiying

作者： Liang, Ruiying;Liang, Lin;Jia, Yaxiong;Han, Kun;Zhao, Jingjie;Cui, Shangjin;Liang, Ruiying;Liang, Lin;Jia, Yaxiong;Han, Kun;Zhao, Jingjie;Cui, Shangjin;Ren, Xiaoxia;Song, Cuiping

作者机构：

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.243； 五年影响因子：2.176 ）

ISSN： 0304-8608

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收录情况： SCI

摘要： Pigeon paramyxovirus-1 (PPMV-1) is a strain of Newcastle disease virus (NDV) that has adapted to infect pigeons and poses a constant threat to the commercial poultry industry. Early detection via rapid and sensitive methods, along with timely preventative and mitigating actions, is important for reducing the spread of PPMV-1. Here, we report the development of a TaqMan loop-mediated isothermal amplification assay (TaqMan-LAMP) for rapid and specific detection of PPMV-1 based on the F gene. This system makes use of six novel primers and a TaqMan probe that targets nine distinct regions of the F gene that are highly conserved among PPMV-1 isolates. The results showed that the limit of detection was 10 copies mu L-1 for PPMV-1 cDNA and 0.1 ng for PPMV-1 RNA. The reaction was completed within 25 min and was thus faster than conventional RT-PCR. Moreover, no cross-reactions with similar viruses or with peste des petits ruminants virus (PPRV) or NDV LaSota vaccine strains were observed under the same conditions. To evaluate the applicability of the assay, the TaqMan-LAMP assay and a commercial RT-PCR assay were compared using 108 clinical samples, and the concordance rate between two methods was found to be 96.3%. The newly developed PPMV-1 TaqMan-LAMP assay can therefore be used for simple, efficient, rapid, specific, and sensitive diagnosis of PPMV-1 infections.

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