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Cited by 190

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Quantitative, multiplexed workflow for deep analysis of human blood plasma and biomarker discovery by mass spectrometry

Open access
Keshishian, Hasmik, Burgess, Michael W, Specht, Harrison, Wallace, Luke, Clauser, Karl R, Gillette, Michael A, Carr, Steven A·2017·Nature Protocols

Abstract

Proteomic characterization of blood plasma is of central importance to clinical proteomics and particularly to biomarker discovery studies. The vast dynamic range and high complexity of the plasma proteome have, however, proven to be serious challenges and have often led to unacceptable tradeoffs between depth of coverage and sample throughput. We present an optimized sample-processing pipeline for analysis of the human plasma proteome that provides greatly increased depth of detection, improved quantitative precision and much higher sample analysis throughput as compared with prior methods. The process includes abundant protein depletion, isobaric labeling at the peptide level for multiplexed relative quantification and ultra-high-performance liquid chromatography coupled to accurate-mass, high-resolution tandem mass spectrometry analysis of peptides fractionated off-line by basic pH reversed-phase (bRP) chromatography. The overall reproducibility of the process, including immunoaffinity depletion, is high, with a process replicate coefficient of variation (CV) of <12%. Using isobaric tags for relative and absolute quantitation (iTRAQ) 4-plex, >4,500 proteins are detected and quantified per patient sample on average, with two or more peptides per protein and starting from as little as 200 μl of plasma. The approach can be multiplexed up to 10-plex using tandem mass tags (TMT) reagents, further increasing throughput, albeit with some decrease in the number of proteins quantified. In addition, we provide a rapid protocol for analysis of nonfractionated depleted plasma samples analyzed in 10-plex. This provides ∼600 quantified proteins for each of the ten samples in ∼5 h of instrument time.

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Metadata

Authors
Keshishian, H., Burgess, M. W., Specht, H., Wallace, L., Clauser, K. R., Gillette, M. A., & Carr, S. A.
Venue
Nature Protocols
Published
2017-07-27
Volume
12
Issue
8
Pages
1683-1701
ISSN
  • 1750-2799 (ISSN-L)
  • 1754-2189
OpenAlex
W2736913410
Cited by
190
References
8
FWCI
6.78
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Quantitative, multiplexed workflow for deep analysis of human blood plasma and biomarker discovery by mass spectrometry. https://app.cochat.ai/papers/10.1038/nprot.2017.054
The paper
Keshishian, H., Burgess, M. W., Specht, H., Wallace, L., Clauser, K. R., Gillette, M. A., & Carr, S. A. (2017). Quantitative, multiplexed workflow for deep analysis of human blood plasma and biomarker discovery by mass spectrometry. Nature Protocols. https://doi.org/10.1038/nprot.2017.054

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