DNA circuits as amplifiers for the detection of nucleic acids on a paperfluidic platform.

DNA circuits as amplifiers for the detection of nucleic acids on a paperfluidic platform.
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DOI:
10.1039/c2lc40373k
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发表时间:
2012-08-21
期刊:
影响因子:
6.1
通讯作者:
Ellington AD
Ellington AD
中科院分区:
工程技术1区
文献类型:
--
作者:
Allen PB;Arshad SA;Li B;Chen X;Ellington AD

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本文描述了使用基于链交换反应的非酶核酸电路来检测纸流体平台上的目标序列。所实施的 DNA 电路包括非酶放大器和荧光报告基因的转导;这些在输入核酸信号的检测方面产生了一个数量级的改进。为了进一步改进信号放大和检测,我们将无酶放大器与环介导等温放大(LAMP)集成。通过弥合低浓度 LAMP 扩增子与荧光检测极限之间的差距,非酶放大器使我们能够以纸流控格式检测少至 1,200 个输入模板。
This article describes the use of non-enzymatic nucleic acid circuits based on strand exchange reactions to detect target sequences on a paperfluidic platform. The DNA circuits that were implemented include a non-enzymatic amplifier and transduction to a fluorescent reporter; these yield an order of magnitude improvement in detection of an input nucleic acid signal. To further improve signal amplification and detection, we integrated the enzyme-free amplifier with loop-mediated isothermal amplification (LAMP). By bridging the gap between the low concentrations of LAMP amplicons and the limits of fluorescence detection, the non-enzymatic amplifier allowed us to detect as few as 1,200 input templates in a paperfluidic format.
无酶DNA电路对多种检测方法的有理模块化适应。
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