Multinozzle emitter array chips for small-volume proteomics.
Multinozzle emitter array chips for small-volume proteomics.
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DOI:
10.1021/ac3032965
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发表时间:
2013-01-15
影响因子:
7.4
通讯作者:
Wang D
中科院分区:
文献类型:
--
作者:
Mao P;Gomez-Sjoberg R;Wang D
High-throughput multiplexed proteomics of small-volume biospecimens will generate new opportunities in theranostics. Achieving parallel top-down and bottom-up mass spectrometry analyses of target proteins using a unified apparatus will improve proteome characterization. We have developed a novel silicon-based microfluidic device, multinozzle emitter array chip (MEA chip), as a new platform for small-volume proteomics using liquid chromatography-nanoelectrospray ionization mass spectrometry (LC-nanoESI-MS). We demonstrate parallel, on-chip, and on-line LC-MS analysis of hemoglobin and its tryptic digests directly from microliters of blood, achieving a detection limit of less than 5 red blood cells. Our MEA chip will enable clinical proteomics of small-volume samples.
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