文献类型： 外文期刊
作者： Zhang, Xuzhi 1 ; Li, Qiufen 3 ; Jin, Xianshi 4 ; Jiang, Cheng 1 ; Lu, Yong 1 ; Tavallaie, Roya 1 ; Gooding, J. Justin 1 ;
作者机构： 1.Univ New S Wales, Sch Chem, Sydney, NSW 2052, Australia
2.Univ New S Wales, Australian Ctr NanoMed, Sydney, NSW 2052, Australia
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr, Qingdao 266071, Peoples R China
4.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisherie
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2015 年 5 卷
页码：
收录情况： SCI
摘要： Integrating loop-mediated isothermal amplification (LAMP) with capacitively coupled contactless conductivity detection ((CD)-D-4), we have developed an electrical sensor for the simultaneous amplification and detection of specific sequence DNA. Using the O26-wzy gene as a model, the amount of initial target gene could be determined via the threshold time obtained by monitoring the progression of the LAMP reaction in real time. Using the optimal conditions, a detection limit of 12.5 copy/mu L can be obtained within 30 min. Monitoring the LAMP reaction by (CD)-D-4 has not only all the advantages that existing electrochemical methods have, but also additional attractive features including being completely free of carryover contamination risk, high simplicity and extremely low cost. These benefits all arise from the fact that the electrodes are separated from the reaction solution, that is (CD)-D-4 is a contactless method. Hence in proof of principle, the new strategy promises a robust, simple, cost-effective and sensitive method for quantitative determination of a target gene, that is applicable either to specialized labs or at point-of-care.
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