Isothermal discrimination of single-nucleotide polymorphisms via real-time kinetic desorption and label-free detection of DNA using silicon photonic microring resonator arrays.

Isothermal discrimination of single-nucleotide polymorphisms via real-time kinetic desorption and label-free detection of DNA using silicon photonic microring resonator arrays.
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DOI:
10.1021/ac201659p
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发表时间:
2011-09-01
影响因子:
7.4
通讯作者:
Bailey, Ryan C.
Bailey, Ryan C.
中科院分区:
化学1区
文献类型:
--
作者:
Qavi, Abraham J.;Mysz, Thomas M.;Bailey, Ryan C.

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我们报道了一种敏感的、无标记的方法,用于检测单链DNA并使用硅光子微环谐振器阵列区分单核苷酸多态(SNP)。在仅10分钟的检测中,DNA的检测水平为亚皮摩尔水平,动态范围为三个数量级。在定量之后,通过使用SNP特异性捕获探针阵列实时监测双链的解离动力学,实现具有单核苷酸分辨率的序列识别。通过利用微环谐振器平台的多路复用功能,我们成功地生成了多路复用阵列,以快速筛选SNPs的存在和身份,并通过分析不同GC含量的多个目标序列来展示该方法的健壮性。此外,我们还表明,该技术可用于区分纯合子和杂合子等位基因。
We report a sensitive, label-free method for detecting single-stranded DNA and discriminating between single nucleotide polymorphisms (SNPs) using arrays of silicon photonic microring resonators. In only a 10 minute assay, DNA is detected at sub-picomole levels with a dynamic range of three orders of magnitude. Following quantitation, sequence discrimination with single nucleotide resolution is achieved isothermally by monitoring the dissociation kinetics of the duplex in real-time using an array of SNP-specific capture probes. By leveraging the multiplexed capabilities of the microring resonator platform, we successfully generate multiplexed arrays to quickly screen for the presence and identity of SNPs and show the robustness of this methodology by analyzing multiple target sequences of varying GC content. Furthermore, we show that this technique can be used to distinguish both homozygote and heterozygote alleles.
用于定量细胞因子检测和 T 细胞分泌分析的硅光子微环谐振器。
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