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Updated: Aug 7, 2026
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Cholesterol Efflux Assay
Published on: March 6, 2012
Large scale gene expression analysis of cholesterol-loaded macrophages
D Shiffman1, T Mikita, J T Tai
1CV Therapeutics Inc. and Incyte Genomics Inc., Palo Alto, California 94304, USA.
The Journal of Biological Chemistry
|September 7, 2000
Summary
This study reveals how macrophages respond to oxidized low-density lipoprotein (Ox-LDL), identifying key genes involved in atherosclerosis foam cell formation. Findings highlight molecular pathways influencing macrophage behavior in vascular disease.
Area of Science:
- Cardiovascular Biology
- Molecular Biology
- Immunology
Background:
- Atherosclerosis involves macrophages accumulating cholesterol, forming foam cells that drive vascular disease.
- Understanding macrophage response to oxidized low-density lipoprotein (Ox-LDL) is crucial for disease progression insights.
Purpose of the Study:
- To comprehensively analyze gene expression changes in macrophages exposed to Ox-LDL.
- To identify molecular players and pathways regulating foam cell formation and function.
Main Methods:
- THP-1 cells were differentiated into macrophages and treated with Ox-LDL.
- Gene expression profiling was performed using microarrays covering 9808 human genes.
- Differential gene expression analysis identified regulated genes across multiple time points.
Main Results:
- 268 genes showed at least 2-fold regulation in response to Ox-LDL.
- Gene expression patterns were clustered into seven distinct profiles.
- Identified genes are implicated in macrophage growth, survival, migration, inflammation, and matrix remodeling.
Conclusions:
- Gene expression analysis provides a detailed map of macrophage response to Ox-LDL.
- Novel molecular components and pathways, including nuclear receptors, were identified.
- These findings offer insights into cellular mechanisms underlying atherosclerosis progression.
