Caveolin-1在氧化型低密度脂蛋白诱导的巨噬细胞荷脂过程中的表达 |
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引用本文: | 涂剑,廖端芳,周志刚,曹轩,朱炳阳,涂玉林. Caveolin-1在氧化型低密度脂蛋白诱导的巨噬细胞荷脂过程中的表达[J]. 南华大学学报(医学版), 2009, 37(4): 390-392 |
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作者姓名: | 涂剑 廖端芳 周志刚 曹轩 朱炳阳 涂玉林 |
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作者单位: | 1. 南华大学,药物药理研究所,湖南,衡阳,421001 2. 南华大学,第一附属医院 3. 南华大学,心血管病研究所 |
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基金项目: | 湖南省医药卫生基金,湖南省教育厅基金 |
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摘 要: | 目的观察Caveolin-1在氧化型低密度脂蛋白(ox-LDL)诱导的巨噬细胞荷脂过程中的表达变化,进而分析Caveolin-1在巨噬源性泡沫细胞形成过程中的作用。方法采用75mg/L ox-LDL与RAW264.7细胞共同孵育不同时间,高效液相色谱法检测细胞内胆固醇含量的变化,建立巨噬细胞荷脂化模型;Western-blot检测Caveolin-1蛋白的表达改变。结果75mg/L ox-LDL与RAW264.7细胞共同孵育48h后,细胞内胆固醇酯/总胆固醇的比值上升至42.3%±5.9%,符合荷脂细胞特征。Caveolin-1的蛋白表达较0h组明显减弱。
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关 键 词: | Caveolin-1 巨噬细胞 氧化型低密度脂蛋白 |
Expression of Caveolin-1 on Lipid-Loaded Macrophages Induced by Oxidized Low Density Lipoprotein |
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Affiliation: | TU Jian, LIAO Duan - fang, ZHOU Zhi - gang, et al ( Institute of Pharmacy and Pharmacology, University of South China,Hengyang , Hunan 421001, China) |
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Abstract: | Objective To observe the protein expression of Caveolin - 1 in lipid - loaded macrophages induced by ox-idized low density lipoprotein and explore the effect of Caveolin - 1 on the process. Methods RAW264.7 mouse macrophages were treated with 75 mg/L oxidized low density lipoprotein for different time(0 h, 24 h,48 hand 72 h ). High performance liquid chromatography ( HPLC ) analysis was peformed to determine the content of cellular cholesterol. Western - blot was used to detect the protein expression of Caveolin-1. Results Western - blot and immunofluoreseence showed that the protein expression of Caveolin-1 was significantly decreased in a time - dependent manner in maerophages. Conclusion The protein expression of Caveolin - 1 was down - regulated in lipid - loaded macrophages. |
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Keywords: | Caveolin-1 |
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