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Updated: Jul 15, 2026

07:54
Cholesterol Efflux Assay
Published on: March 6, 2012
Intestinal cholesterol transport proteins: an update and beyond
Emile Levy1, Schohraya Spahis, Daniel Sinnett
1Research Centre, CHU-Sainte-Justine, Québec, Canada. emile.levy@recherche-ste-justine.qc.ca
Current Opinion in Lipidology
|May 15, 2007
Summary
Dietary cholesterol absorption involves brush-border proteins. Understanding these proteins, like NPC1L1, and their regulation offers new cardiovascular disease treatment strategies.
Area of Science:
- Biochemistry
- Molecular Biology
- Cardiovascular Science
Background:
- Dietary cholesterol contributes to atherogenesis.
- Minimizing cholesterol absorption is a therapeutic strategy.
- Brush-border proteins in enterocytes are key to cholesterol transport.
Purpose of the Study:
- Review recent advancements in brush-border proteins involved in alimentary cholesterol transport.
- Elucidate the molecular mechanisms of intestinal cholesterol and plant sterol uptake.
- Identify potential therapeutic targets for cardiovascular disease.
Main Methods:
- Literature review of studies on intestinal cholesterol transport proteins.
- Analysis of molecular mechanisms of cholesterol uptake and efflux.
- Investigation of genetic regulation by transcription factors.
Main Results:
- Several proteins mediate intestinal cholesterol transport, including SR-BI, NPC1L1, CD36, aminopeptidase N, P-glycoprotein, and caveolin-1/annexin-2.
- ABC family transporters (ABCA1, ABCG5/ABCG8) facilitate cholesterol efflux.
- NPC1L1 is likely the primary target of ezetimibe, a cholesterol-lowering drug.
Conclusions:
- Understanding the role and regulation of intestinal cholesterol transport proteins is crucial.
- This knowledge may lead to novel treatments for cardiovascular disease.
- Targeting these proteins offers a promising therapeutic avenue.
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