A dual platform for selective analyte enrichment and ionization in mass spectrometry using aptamer-conjugated graphene oxide.

A dual platform for selective analyte enrichment and ionization in mass spectrometry using aptamer-conjugated graphene oxide.
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DOI:
10.1021/ja109042w
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发表时间:
2010-12-15
影响因子:
15
通讯作者:
Tan W
Tan W
中科院分区:
化学1区
文献类型:
--
作者:
Gulbakan B;Yasun E;Shukoor MI;Zhu Z;You M;Tan X;Sanchez H;Powell DH;Dai H;Tan W

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这项研究展示了使用适体连接的氧化石墨烯作为从复杂生物介质中亲和提取和检测分析物的平台。我们已经证明,可卡因和腺苷可以从血浆样品中选择性地浓缩,并且可以在没有基质的情况下获得直接质谱读数,并且大大提高了信噪比。适体结合氧化石墨烯在靶浓缩和产生高效电离目标分子用于质谱学方面具有明显的优势。这些结果证明了该方法在实际生物样品中小分子分析中的实用性。
This study demonstrates the use of aptamer-conjugated graphene oxide as an affinity extraction and detection platform for analytes from complex biological media. We have shown that cocaine and adenosine can be selectively enriched from plasma samples and that direct mass spectrometric readout can be obtained without a matrix and with greatly improved signal-to-noise ratios. The aptamer conjugated graphene oxide has clear advantages in target enrichment and in generating highly efficient ionization of target molecules for mass spectrometry. These results demonstrate the utility of the approach for analysis of small molecules in real biological samples.
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