Cited by 31Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsMetabolomics and Mass Spectrometry Studies

Method for the simultaneous quantitation of apolipoprotein E isoforms using tandem mass spectrometry

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Wildsmith, Kristin R., Han, Bomie, Bateman, Randall J.·2009·Analytical Biochemistry

Abstract

Using apolipoprotein E (ApoE) as a model protein, we developed a protein isoform analysis method utilizing stable isotope labeling tandem mass spectrometry (SILT MS). ApoE isoforms are quantitated using the intensities of the b and y ions of the (13)C-labeled tryptic isoform-specific peptides versus unlabeled tryptic isoform-specific peptides. The ApoE protein isoform analysis using SILT allows for the simultaneous detection and relative quantitation of different ApoE isoforms from the same sample. This method provides a less biased assessment of ApoE isoforms compared to antibody-dependent methods, and may lead to a better understanding of the biological differences between isoforms.

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Crossref · 10.1016/j.ab.2009.07.049

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  • The ApoE isoform-specific liquid chromatography/mass spectrometry method used is valid for distinguishing ApoE isoforms.

    “Utilizing an ApoE isoform-specific liquid chromatography/mass spectrometry (LC/MS) method [29], we compared ApoE isoform kinetics in both homozygous and heterozygous subjects in the periphery and CNS.”

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Authors
Wildsmith, K. R., Han, B., & Bateman, R. J.
Affiliations
  • Washington University in St. Louis (US)
  • Eli Lilly (United States) (US)
Corresponding author
Bateman, Randall J.
Venue
Analytical Biochemistry
Publisher
Elsevier BV
Published
2009-12
Volume
395
Issue
1
Pages
116-118
ISSN
0003-2697 (ISSN-L)
OpenAlex
W1984525664
Cited by
31
References
18
Citations by year
2025: 1 · 2022: 2 · 2021: 2 · 2020: 1 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 6 · 2014: 4 · 2013: 2 · 2012: 5
FWCI
1.15
Type
journal article
Language
en
Open access
Locations
  • Analytical Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (K23AG030946)
  • National Institute of Neurological Disorders and Stroke (R01NS065667)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
apolipoprotein E, protein isoforms, stable isotope labeling, tandem mass spectrometry, tryptic peptides, relative quantification
MeSH terms
Alzheimer Disease, Animals, Apolipoproteins E, Astrocytes, Carbon Isotopes, Cell Line, Transformed, Indicator Dilution Techniques, Lipoproteins, Peptide Fragments, Risk Factors, Trypsin, Protein Isoforms, Mice, Apolipoprotein E4, Apolipoprotein E2, Tandem Mass Spectrometry, Gene Knock-In Techniques

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