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Cited by 323

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An Automated and Multiplexed Method for High Throughput Peptide Immunoaffinity Enrichment and Multiple Reaction Monitoring Mass Spectrometry-based Quantification of Protein Biomarkers

Open access
Whiteaker, Jeffrey R., Zhao, Lei, Anderson, Leigh, Paulovich, Amanda G.·2010·Molecular & Cellular Proteomics

Abstract

There is an urgent need for quantitative assays in verifying and validating the large numbers of protein biomarker candidates produced in modern "-omics" experiments. Stable isotope standards with capture by anti-peptide antibodies (SISCAPA) has shown tremendous potential to meet this need by combining peptide immunoaffinity enrichment with quantitative mass spectrometry. In this study, we describe three significant advances to the SISCAPA technique. First, we develop a method for an automated magnetic bead-based platform capable of high throughput processing. Second, we implement the automated method in a multiplexed SISCAPA assay (nine targets in one assay) and assess the performance characteristics of the multiplexed assay. Using the automated, multiplexed platform, we demonstrate detection limits in the physiologically relevant ng/ml range (from 10 microl of plasma) with sufficient precision (median coefficient of variation, 12.6%) for quantifying biomarkers. Third, we demonstrate that enrichment of peptides from larger volumes of plasma (1 ml) can extend the limits of detection to the low pg/ml range of protein concentration. The method is generally applicable to any protein or biological specimen of interest and holds great promise for analyzing large numbers of biomarker candidates.

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Metadata

Authors
Whiteaker, J. R., Zhao, L., Anderson, L., & Paulovich, A. G.
Venue
Molecular & Cellular Proteomics
Publisher
Elsevier BV
Published
2010-01
Volume
9
Issue
1
Pages
184-196
ISSN
1535-9476 (ISSN-L)
OpenAlex
W2047322941
Cited by
323
References
26
FWCI
13.39
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: An Automated and Multiplexed Method for High Throughput Peptide Immunoaffinity Enrichment and Multiple Reaction Monitoring Mass Spectrometry-based Quantification of Protein Biomarkers. https://app.cochat.ai/papers/10.1074/mcp.m900254-mcp200
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Whiteaker, J. R., Zhao, L., Anderson, L., & Paulovich, A. G. (2010). An Automated and Multiplexed Method for High Throughput Peptide Immunoaffinity Enrichment and Multiple Reaction Monitoring Mass Spectrometry-based Quantification of Protein Biomarkers. Molecular & Cellular Proteomics. https://doi.org/10.1074/mcp.m900254-mcp200

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