摘要:目的腹腔脂肪型丝氨酸蛋白酶抑制剂(visceral adipose tissue-derived serine protease inhibitor,vaspin)是新发现的脂肪因子,对代谢性疾病具有改善作用。该研究旨在研究vaspin对体外培养的THP-1细胞泡沫化的影响。方法 100 nM佛波酯孵育THP-1巨噬细胞48 h后分为对照组,氧化低密度脂蛋白组(ox-LDL浓度50μg/ml,48 h),vaspin干预组(vaspin终浓度100 ng/ml,预孵24 h);采用油红0染色法检测vaspin对THP-1细胞泡沫化的影响;Real-time PCR和Western blot法检测vaspin对THP-1细胞中酰基辅酶A胆固醇酰基转移酶-1(acy1-coenzyme A:cholesterol acyltrasferase-1,ACAT-1)、ATP结合盒转运体A1(ATP binding casstte transporter A1,ABCA1)及细胞清道夫受体-A1(scavenger receptor-A1,SR-A1)mRNA及蛋白表达水平的影响。结果与oxLDL组比较,ox-LDL+vaspin组巨噬细胞泡沫化程度明显下降(P〈0.05);ox-LDL+vaspin组ACAT-1和SRA1 mRNA及蛋白表达水平明显降低(P〈0.05),而ABCA1 mRNA及蛋白表达水平明显升高(P〈0.05)。结论 vaspin能够抑制巨噬细胞向泡沫细胞的转化,发挥抗动脉粥样硬化(atherosclerosis,As)的作用。
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