Visual detection of microRNA with lateral flow nucleic acid biosensor.
Visual detection of microRNA with lateral flow nucleic acid biosensor.
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DOI:
10.1016/j.bios.2013.10.055
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发表时间:
2014-04-15
影响因子:
12.6
通讯作者:
Liu, Guodong
中科院分区:
文献类型:
--
作者:
Gao, Xuefei;Xu, Hui;Baloda, Meenu;Gurung, Anant S.;Xu, Li-Ping;Wang, Tao;Zhang, Xueji;Liu, Guodong
We report a DNA-gold nanoparticle (DNA-GNP) based lateral flow nucleic acid biosensor for visual detection of microRNA (miRNA)-215 in aqueous solutions and biological samples with low-cost and short analysis time. Sandwich-type hybridization reactions among GNP-labeled DNA probe, miRNA-215 and biotin-modified DNA probes were performed on the lateral flow device. The accumulation of GNPs on the test zone of the biosensor enables the visual detection of miRNA-215. After systematic optimization, the biosensor was able to detect a minimum concentration of 60 pM miRNA-215. The biosensor was applied to detect miRNA-215 from A549 cell lysate directly without complex sample treatment, and the detection limit of 0.148 million cells was obtained. This study provides a simple, rapid, specific and low-cost approach for miRNA detection in aqueous solutions and biological samples, showing great promise for clinical application and biomedical diagnosis in some malignant diseases.
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通讯作者:
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