Cited by 43Cholesterol and Lipid MetabolismLipoproteins and Cardiovascular HealthLipid metabolism and disorders

Kinetics of plasma apolipoprotein E isoforms by LC-MS/MS: a pilot study

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Blanchard, Valentin, Ramin-Mangata, Stéphane, Billon-Crossouard, Stéphanie, Aguesse, Audrey, Durand, Manon, Chemello, Kevin, Nativel, Brice, Flet, Laurent +7 more·2018·Journal of Lipid Research

Abstract

Human apoE exhibits three major isoforms (apoE2, apoE3, and apoE4) corresponding to polymorphism in the APOE gene. Total plasma apoE concentrations are closely related to these isoforms, but the underlying mechanisms are unknown. We aimed to describe the kinetics of apoE individual isoforms to explore the mechanisms for variable total apoE plasma concentrations. We used LC-MS/MS to discriminate between isoforms by identifying specific peptide sequences in subjects (three E2/E3, three E3/E3, and three E3/E4 phenotypes) who received a primed constant infusion of 2 H 3 -leucine for 14 h. apoE concentrations and leucine enrichments were measured hourly in plasma. Concentrations of apoE2 were higher than apoE3, and concentrations of apoE4 were lower than apoE3. There was no difference between apoE3 and apoE4 catabolic rates and between apoE2 and apoE3 production rates (PRs), but apoE2 catabolic rates and apoE4 PRs were lower. The mechanisms leading to the difference in total plasma apoE concentrations are therefore related to contrasted kinetics of the isoforms. Production or catabolic rates are differently affected according to the specific isoforms. On these grounds, studies on the regulation of the involved biochemical pathways and the impact of pathological environments are now warranted.

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Authors
Blanchard, V., Ramin-Mangata, S., Billon-Crossouard, S., Aguesse, A., Durand, M., Chemello, K., Nativel, B., Flet, L., Chétiveaux, M., Jacobi, D., Bard, J.-M., Ouguerram, K., Lambert, G., Krempf, M., & Croyal, M.
Affiliations
  • Inserm (FR)
  • PhysioPathologie des Adaptations Nutritionnelles (FR)
  • Centre National de la Recherche Scientifique (FR)
  • Centre Hospitalier Universitaire de Nantes (FR)
Corresponding author
Croyal, Mikaël
Venue
Journal of Lipid Research
Publisher
Elsevier BV
Published
2018
Volume
59
Issue
5
Pages
892-900
ISSN
0022-2275 (ISSN-L)
OpenAlex
W2793139489
Cited by
43
References
38
Citations by year
2026: 4 · 2025: 10 · 2024: 2 · 2022: 8 · 2021: 4 · 2020: 9 · 2019: 5 · 2018: 1
FWCI
4.94
Type
journal article
Language
en
Open access
Locations
  • Journal of Lipid Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • HAL (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Agence Nationale de la Recherche (ANR-16-RHUS-0007 CHOPIN)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
apolipoprotein E, APOE isoforms, APOE2, APOE3, APOE ε4, APOE polymorphism, production rate, leucine infusion, stable isotope tracers
MeSH terms
Chromatography, High Pressure Liquid, Humans, Kinetics, Male, Middle Aged, Pilot Projects, Protein Isoforms, Apolipoprotein E3, Apolipoprotein E4, Apolipoprotein E2, Tandem Mass Spectrometry

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