Cited by 576Cholesterol and Lipid MetabolismLipoproteins and Cardiovascular HealthLipid metabolism and disorders

Targeted Replacement of the Mouse Apolipoprotein E Gene with the Common Human APOE3 Allele Enhances Diet-induced Hypercholesterolemia and Atherosclerosis

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Sullivan, Patrick M., Mezdour, Hafid, Aratani, Yasuaki, Knouff, Chris, Najib, Jamila, Reddick, Robert L., Quarfordt, Steven H., Maeda, Nobuyo·1997·Journal of Biological Chemistry

Abstract

Apolipoprotein (apo) E, a constituent of several lipoproteins, is a ligand for the low density lipoprotein receptor, and this interaction is important for maintaining cholesterol and triglyceride homeostasis. We have used a gene replacement strategy to generate mice that express the human apoE3 isoform in place of the mouse protein. The levels of apoE mRNA in various tissues are virtually the same in the human apoE3 homozygous (3/3) mice and their littermates having the wild type mouse allele (+/+). Total cholesterol and triglyceride levels in fasted plasma from the 3/3 mice were not different from those in the +/+ mice, when maintained on a normal (low fat) chow diet. We found, however, notable differences in the distribution of plasma lipoproteins and apolipoprotein E between the two groups: beta-migrating lipoproteins and plasma apoB100 levels are decreased in the 3/3 mice, and the apoE distribution is shifted from high density lipoproteins to larger lipoprotein particles. In addition, the fractional catabolic rate of exogenously administered remnant particles without apoE was 6-fold slower in the 3/3 mice compared with the +/+ mice. When the 3/3 and +/+ animals were fed a high fat/high cholesterol diet, the 3/3 animals responded with a dramatic increase (5-fold) in total cholesterol compared with the +/+ mice (1.5-fold), and after 12 weeks on this same diet the 3/3 animals developed significantly (at least 13-fold) larger atherosclerotic plaques in the aortic sinus area t…

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Crossref · 10.1074/jbc.272.29.17972

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Authors
Sullivan, P. M., Mezdour, H., Aratani, Y., Knouff, C., Najib, J., Reddick, R. L., Quarfordt, S. H., & Maeda, N.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Duke Medical Center (US)
Corresponding author
Maeda, Nobuyo
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1997-07
Volume
272
Issue
29
Pages
17972-17980
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2011885704
Cited by
575
References
48
Citations by year
2026: 17 · 2025: 26 · 2024: 25 · 2023: 39 · 2022: 28 · 2021: 32 · 2020: 31 · 2019: 21 · 2018: 12 · 2017: 20 · 2016: 27 · 2015: 22 · 2014: 29 · 2013: 21 · 2012: 29
FWCI
15.71
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
National Heart, Lung, and Blood Institute (HL 42630)
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, APOE3, gene replacement, transgenic mice, hypercholesterolemia, atherosclerosis, serum lipoproteins, apolipoprotein B-100, high-fat diet, LDL receptor, cholesterol homeostasis, aortic plaque
MeSH terms
Alleles, Animals, Apolipoproteins E, Arteriosclerosis, Cholesterol, Diet, Atherogenic, Female, Homozygote, Humans, Hypercholesterolemia, Cholesterol, HDL, Male, Mice, Transgenic, Stem Cells, Triglycerides, Restriction Mapping, Mice, Apolipoprotein E3

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