Simultaneous detection of nucleic acid and protein using gold nanoparticles and lateral flow device.

Simultaneous detection of nucleic acid and protein using gold nanoparticles and lateral flow device.
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使用金纳米颗粒和侧流装置同时检测核酸和蛋白质

DOI:
10.2116/analsci.30.637
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发表时间:
2014
期刊:
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
影响因子:
--
通讯作者:
Liu G
Liu G
中科院分区:
其他
文献类型:
--
作者:
Mao X;Gurung A;Xu H;Baloda M;He Y;Liu G

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在这项工作中,我们提出了一种简单而快速的方法,用于同时检测核酸和蛋白质,使用金纳米粒子(GNP)和侧流装置(LFD)。三明治型免疫反应和DNA杂交同时进行的LFD上使用DNA和抗体功能化的GNP。由于LFD上的DNA杂交和免疫反应事件,捕获的GNP产生可用于DNA和/或蛋白质的定性检测的特征性红色条带。通过使用60-mer DNA和兔IgG(R-IgG)模型靶标证明了原理的证明。LFD能够在15分钟内同时检测至少0.5 nM靶DNA和2 ng mL−1 IgG。拟议的LFD显示出对生物液体中疾病相关循环核酸和蛋白质生物标志物的现场和即时检测的巨大希望。
In this work, we present a simple and fast approach for simultaneous detection of nucleic acid and protein using gold nanoparticles (GNPs) and a lateral flow device (LFD). Sandwich-type immunoreactions and DNA hybridizations were performed simultaneously on the LFD by using DNA- and antibody-functionalized GNPs. The captured GNPs, due to the DNA hybridization and immunoreaction events on the LFD, produced characteristic red bands that could be used for the qualitative detections of DNA and/or protein. The proof of principle was demonstrated by using 60-mer DNA and rabbit IgG (R-IgG) model targets. The LFD was capable of detecting a minimum of 0.5 nM target DNA and 2 ng mL−1 IgG simultaneously in 15 min. The proposed LFD shows great promise for in-field and point-of-care testing of disease-related circulating nucleic acid and protein biomarkers in biological fluids.
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影响因子: 7.4
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