Cited by 29Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchAdvanced Proteomics Techniques and Applications

Both Targeted Mass Spectrometry and Flow Sorting Analysis Methods Detected the Decreased Serum Apolipoprotein E Level in Alzheimer's Disease Patients

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Han, Sun-Ho, Kim, Jun Seok, Lee, Youngju, Choi, Heesun, Kim, Jong-Won, Na, Duk Lyul, Yang, Eun Gyeong, Yu, Myeong-Hee +3 more·2014·Molecular & Cellular Proteomics

Abstract

Apolipoprotein E (ApoE) polymorphism has been appreciated as a valuable predictor of Alzheimer disease (AD), and the associated ε4 allele has been recognized as an indicator of susceptibility to this disease. However, serum ApoE levels have been a controversial issue in AD, due to the great variability regarding the different target detection methods, ethnicity, and the geographic variations of cohorts. The aim of this study was to validate serum ApoE levels in relation to AD, particularly using two distinct detection methods, liquid chromatography-selected reaction monitoring (SRM) mass spectrometry and microsphere-based fluorescence-activated cell sorting (FACS) analysis, to overcome experimental variations. Also, comparison of serum ApoE levels was performed between the level of protein detection by FACS and peptide level by SRM in both control and AD patients. Results from the two detection methods were cross-confirmed and validated. Both methods produced fairly consistent results, showing a significant decrease of serum ApoE levels in AD patients relative to those of a control cohort (43 control versus 45 AD, p < 0.0001). Significant correlation has been revealed between results from FACS and SRM (p < 0.0001) even though lower serum ApoE concentration values were measured in protein by FACS analysis than in peptide-level detections by SRM. Correlation study suggested that a decrease of the serum ApoE level in AD is related to the mini-mental state exam score in both results from different experimental methods, but it failed to show consistent correlation with age, gender, or clinical dementia rating.

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Crossref · 10.1074/mcp.m113.028639

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  • Several studies have successfully used targeted MS strategies to quantify Aβ, tau, and APOE protein levels in CSF with similar disease-association efficacy to that of traditional ELISA assays.

    “Several studies have successfully used targeted MS strategies to quantify Aβ, tau, and APOE protein levels in CSF with similar disease-association efficacy to that of traditional ELISA assays [189–191].”

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Authors
Han, S.-H., Kim, J. S., Lee, Y., Choi, H., Kim, J.-W., Na, D. L., Yang, E. G., Yu, M.-H., Hwang, D., Lee, C., & Mook-Jung, I.
Affiliations
  • Seoul National University (KR)
  • Samsung Medical Center (KR)
  • Korea Institute of Science and Technology (KR)
  • Pohang University of Science and Technology (KR)
Corresponding author
Lee, Cheolju
Venue
Molecular & Cellular Proteomics
Publisher
Elsevier BV
Published
2014-02
Volume
13
Issue
2
Pages
407-419
ISSN
1535-9476 (ISSN-L)
OpenAlex
W2108818213
Cited by
29
References
66
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 4 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 4 · 2015: 6 · 2014: 1
FWCI
2.55
Type
journal article
Language
en
Open access
Locations
  • Molecular & Cellular Proteomics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
Keywords
apolipoprotein E, Alzheimer's disease, APOE polymorphism, APOE ε4, fluorescence-activated cell sorting, method validation, Mini-Mental State Examination, biomarkers
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Amino Acid Sequence, Apolipoproteins E, Blood Chemical Analysis, Female, Flow Cytometry, Humans, Male, Microspheres, Middle Aged, Molecular Sequence Data, Mass Spectrometry, Reproducibility of Results, Down-Regulation, Case-Control Studies

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