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检测阴沟肠杆菌的数字PCR定量方法建立

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以阴沟肠杆菌AmpC酶基因为靶基因,建立了可对其准确定量的数字PCR (ddPCR)方法.对ddPCR反应中的探针浓度进行了优化,并将该方法与实时荧光PCR方法做对比来检测阴沟肠杆菌.结果表明,最终确定ddPCR反应中的最佳探针浓度为400 nmol/L,该方法检测阴沟肠杆菌的最低DNA拷贝数为8.9拷贝/μL,且重复性良好.表明数字PCR方法灵敏度高、特异性好,可用于阴沟肠杆菌的鉴定.
Establishment of the digital PCR assay for detection of Enterobacter cloacae
A droplet digital polymerase chain reaction (ddPCR) method for quantifying Enterobacter cloacae based on ampC gene was developed.The method was compared with real-time fluorescence PCR method and the probe concentration in ddPCR was optimized.The results showed that the optimized probe concentration was 400 nmol/L.The minimum DNA copies of E.cloacae was 8.9 copies/μL by the ddPCR method and the detection result was highly reproducible.It suggests that the ddPCR method established in this study is sensitive and specific,and can be used for the identification of E.cloacae.

Enterobacter cloacaedroplet digital PCR (ddPCR)real-time PCR

禹思宇、唐连飞、陈雪琴、周慧平、梁斌

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湖南出入境检验检疫局检验检疫技术中心,湖南长沙410004

湖南省桂阳县畜牧兽医水产局,湖南郴州424400

阴沟肠杆菌 数字PCR (ddPCR) 实时定量PCR

湖南省科技基金

2014SK3082

2016

畜牧与兽医
南京农业大学

畜牧与兽医

CSTPCD北大核心
影响因子:0.404
ISSN:0529-5130
年,卷(期):2016.48(3)
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