文章基本信息

标题：Detection and Categorization of Diarrheagenic Escherichia coli with Auto-microfluidic Thin-film Chip Method
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作者：Zhenyu Yun ; Lian Zeng ; Weijian Huang 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：12926
DOI：10.1038/s41598-018-30765-3
语种：English
出版社：Springer Nature
摘要：Diarrheagenic Escherichia coli (DEC) causes human diarrhea symptom in both healthy and immunocompromised individuals. An auto-microfluidic thin-film chip (AMTC) instrument integrating one-step multiplex PCR (mPCR) with reverse dot blot hybridization (RDBH) was developed for high-throughput detection of DEC. The novel mPCR method was developed by designing 14 specific primers and corresponding probes. 14 indexes including an endogenous gene ( uidA ) and 13 pathogenic genes ( stx 1, stx 2, escV , ipaH , invE , estB , lt , pic , aggR , astA , bfpB , sth and stp ) of DEC were detected. This one-step mPCR + RDBH approach is useful for simultaneous detection of numerous target genes in a single sample, whose specificity and availability have been confirmed on the positive control of 11 DEC strains. In addition, with 300 diarrheal stool samples being detected by this method, 21 were found to contain five major DEC strains. Compared with monoplex PCR and previous one-step mPCR approach, this method could detect ipaH and estB , and compared with current commercial kit, the relevance ratio of DEC detected by the AMTC method was increased by 1% in stool samples. Furthermore, the novel integration AMTC device could be a valuable detection tool for categorization of E . coli .