楊宇1,劉麗娟1,趙婷婷1,李輝2,王莎莎1,徐煥州1,楊鵬飛1,王旺1,孫肖紅1,王靜1
1中國檢驗檢疫科學研究院衛生檢疫研究所,北京100123;2.上海輝睿生物科技有限公司
摘要:目的為快速檢測新型冠狀病毒,防控疫情的輸入,建立一種快速的雙重實時螢光RT-PCR檢測方法。方法對WHO公布的單重實時螢光RT-PCR檢測引物和探針進行重新設計和優化,建立雙重螢光RT-PCR反應體系,分別採用羧基螢光素(FAM)和綠色螢光蛋白(VIC)螢光基團標記探針,實現雙基因的同時檢測。結果經優化的雙重實時螢光RT-PCR方法有較好的靈敏度和特異性,對陽性對照質粒檢測靈敏度為31拷貝/μl,檢測健康和普通發熱人員咽拭子以及流感病毒無交叉反應。結論建立了雙重實時螢光RT-PCR快速檢測方法,提高檢測效率和準確度的同時降低了成本,可用於新型冠狀病毒的快速應急檢測。
關鍵詞:實時螢光PCR;新型冠狀病毒;檢測;交叉反應
中圖分類號:R183.4 文獻標識碼:B
Multiplex Real-time PCR method for rapiddetection of
Novel Coronavirus
YANG Yu*, LIU Li-juan, ZHAO Ting-ting, LIHui, WANG Sha-sha, XU Huan-zhou,
YANG Peng-fei, WANG wang, SUN Xiao-hong, WANGJing
*Institute of Health Quarantine, ChineseAcademy Of Inspection and Quarantine, Beijing 100123,China
Abstract: Objective To establish a rapid, sensitive method to detect Novel Coronaviruswhich are acute infections with high case fatality rates bymultiplex real-time fluorescence quantitative RT- PCR. Methods Taqman probes labeled by FAM and VIC. Themultiplex real-time quantitative RT-PCR assay was optimized basedon the reported mono assay. The sensitivity was evaluated andinfluenza virus and human swab were using to examine thespecificity. Results A specic real-time RT-PCRmethod was developed with the sensitivity of 31copies/μl for NovelCoronavirus, a synthetic plasmid DNA as a positive control,and nocross reaction was found with Influenza virus and human swabsamples. Conclusion This multiple assay has goodprospects of application for rapid test.
Key words: Multiplex Real-timePCR; Novel Coronavirus; Detection; Cross reaction
《中國國境衛生檢疫雜誌》2012年第5期