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The Natural Compound Dansameum Reduces foam Cell Formation by Downregulating CD36 and Peroxisome
Kang-Seo Park1, Sang Hyun Ahn2, Kang Pa Lee3
1Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
Insights
Dansameum extract (DSE) shows anti-atherosclerotic effects by reducing foam cell formation. DSE down-regulates CD36 and PPAR-γ expression, lowering lipid content in cells and animal models.
Area of Science:
- Cardiovascular Research
- Pharmacology
- Molecular Biology
Background:
- Atherosclerosis is a leading cause of death, with foam cell formation being a critical step.
- Foam cell formation is mediated by CD36 and peroxisome proliferator-activated receptor gamma (PPAR-γ) expression.
Purpose of the Study:
- To investigate the anti-atherosclerotic potential of Dansameum extract (DSE).
- To determine if DSE down-regulates CD36 and PPAR-γ expression in oxidative low-density lipoprotein (oxLDL)-treated RAW264.7 cells and in ApoE Knockout (ApoE-/-) mice.
Main Methods:
- DSE was prepared from Salvia miltiorrhiza, Amomum xanthioides, and Santalum album.
- Immunohistochemistry and RT-PCR were used to analyze protein and mRNA expression.
- Experiments were conducted on oxLDL-treated RAW264.7 cells and ApoE-/- mice fed a high-fat diet.
Main Results:
- DSE significantly reduced foam cell formation in both in vitro and in vivo models.
- DSE treatment decreased CD36 and PPAR-γ expression in oxLDL-stimulated RAW264.7 cells and ApoE-/- mice.
- DSE regulated heme oxygenase-1 (HO-1) expression and reduced cellular lipid content.
Conclusions:
- DSE exhibits anti-atherosclerotic properties.
- DSE effectively regulates foam cell formation by modulating key molecular targets.
- DSE may serve as a potential therapeutic agent for atherosclerosis.
Background:
Atherosclerosis-induced vascular disorders are major causes of death in most western countries. During the development of atherosclerotic lesions, foam cell formation is essential and formed through the expression of CD36 and the peroxisome proliferator-activated receptor gamma (PPAR-γ).
Objective:
To investigate whether dansameum extract (DSE) could show anti-atherosclerotic effect through down-regulating cellular redox state including CD36 and PARP-γ expression in oxidative low-density lipoprotein (oxLDL)-treated RAW264.7 cells and on differentiated foam cells in ApoE Knockout (ApoE-/-) mice.
Materials And Methods:
The Korean polyherbal medicine DSE was prepared from three plants in the following proportions: 40 g of Salvia miltiorrhiza root, 4 g of Amomumxanthioides fruit, and 4 g of Santalum album lignum. The immunohistochemistry and reverse transcription-polymerase chain reaction was used for analysis of protein and mRNA involved in foam cell formation.
Results:
We first showed that effects of DSE on foam cell formation in both oxLDL-induced RAW264.7 cells and in blood vessels from apolipoprotein E deficientApoE-/- mice with high fat diet-fed. DSE treatment significantly reduced the expression of CD36 and PPAR-γ in oxLDL-stimulated RAW264.7 cells and ApoE-/-mice, in the latter case by regulating heme oxygenase-1. Furthermore, DSE treatment also reduced cellular lipid content in vitro and in vivo experiments.
Conclusion:
Our data suggest that DSE may have anti-atherosclerotic properties through regulating foam cell formation.
Summary:
Dansameum extract (DSE) Regulates the expression of CD36 and peroxisome proliferator-activated receptor gamma in oxidative low-density lipoprotein-stimulated RAW264.7 Cells and ApoE Knockout (ApoE Knockout [ApoE-/-]) miceDSE Regulates Cholesterol Levels in the Serum of ApoE-deficient (ApoE-/-) miceDSE Reduced the Formation of Foam Cells by Regulating heme oxygenase-1 in ApoE-/- mice with high fat diet-fed. Abbreviations used: DSE: Dansameum extract, PPAR-γ: Peroxisome proliferator-activated receptor γ, HO-1: Heme oxygenase-1, CVD: Cardiovascular diseases.
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