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

ABSTRACT: 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 readouts can be obtained without a matrix and with greatly improved signal-to-noise ratios. 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.

SUBMITTER: Gulbakan B

PROVIDER: S-EPMC3135746 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature

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

Gulbakan Basri B Yasun Emir E Shukoor M Ibrahim MI Zhu Zhi Z You Mingxu M Tan Xiaohong X Sanchez Hernan H Powell David H DH Dai Hongjie H Tan Weihong W

Journal of the American Chemical Society 20101122 49

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 readouts can be obtained without a matrix and with greatly improved signal-to-noise ratios. Aptamer-conjugated graphene oxide has clear advantages in target enrichment and in generating highly efficient ionization ...[more]

PMID: 21090719

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