Amentoflavone prevents ox-LDL-induced lipid accumulation by suppressing the PPARγ/CD36 signal pathway
| Autor: | Yujuan Xiong, Jia-Ling Zhuang, Xianzhang Huang, Qi-Zhen Zhuang, Ying-Yi Liu, Wen-Zhi Tang, Zhen-Zhen Li |
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| Rok vydání: | 2021 |
| Předmět: |
CD36 Antigens
Small interfering RNA THP-1 Cells CD36 Myocytes Smooth Muscle Amentoflavone Toxicology Muscle Smooth Vascular chemistry.chemical_compound Biflavonoids Humans Viability assay Hypolipidemic Agents Pharmacology Gene knockdown biology Chemistry Atherosclerosis Lipid Metabolism Plaque Atherosclerotic Cell biology Lipoproteins LDL PPAR gamma ABCA1 biology.protein lipids (amino acids peptides and proteins) Signal transduction Lipoprotein ATP Binding Cassette Transporter 1 Foam Cells Signal Transduction |
| Zdroj: | Toxicology and applied pharmacology. 431 |
| ISSN: | 1096-0333 |
| Popis: | The formation of fat-laden foam cells plays an important role in the initiation and progression of atherosclerosis (AS). Amentoflavone (AF) is found in various traditional Chinese medicines, such as ginkgo biloba, which are used to treat cardiovascular diseases (CVDs). We aimed to explore the potential effects and mechanisms of AF on lipid accumulation, and its possible application in atherosclerotic cardiovascular disease (ASCVD). Cellular models of lipid accumulation were established by treatment of HUASMCs and THP-1 cells with oxidized low-density lipoprotein (ox-LDL). Cell viability, lipid accumulation, and ox-LDL uptake were assessed. Small interfering RNAs (siRNAs) and overexpression plasmids were used to reveal the hierarchical correlations of regulatory pathways. AF reduced the lipid accumulation and ox-LDL uptake induced by ox-LDL, and reduced the expression levels of cluster of differentiation 36 (CD36) and peroxisome proliferator-activated receptor gamma (PPARγ) proteins, while the expression level of ATP binding cassette subfamily A member 1 (ABCA1) increased. Knockdown of PPARγ or CD36 with siRNAs prevented ox-LDL-induced lipid accumulation. Overexpression of CD36 or PPARγ promoted the lipid accumulation induced by ox-LDL and eliminated the effect of AF on ox-LDL-induced lipid accumulation. Overall, AF prevents ox-LDL-induced lipid accumulation by suppressing the PPARγ/CD36 signaling pathway. |
| Databáze: | OpenAIRE |
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