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油酰乙醇胺对脂多糖诱导的THP-1细胞炎症因子表达的影响
Authors
孟祥岚
张乐
邹军
金鑫
Publication date
20 April 2012
Publisher
Abstract
目的探讨油酰乙醇胺(OEA)对细菌脂多糖(LPS)诱导的人急性白血病单核细胞(THP-1)中前炎症因子TNF-α、IL-1β、IL-6表达的影响,并初步探讨OEA作为过氧化物酶体增殖物激活受体-α(PPAR-α)激动剂参与对炎症调节的作用机制。方法体外培养的THP-1细胞,分别加入不同浓度的OEA(10,20,40μmol/L)或非诺贝特(100μmol/L)共同孵育1 h后,用1μg/mL LPS分别诱导6或24 h。采用RT-PCR、实时定量PCR和酶联免疫吸附检测测定细胞中TNF-α、IL-1β、IL-6 mRNA和蛋白的表达的变化,并使用实时定量PCR及Western blot方法检测PPAR-α及Toll样受体4(TLR4)的mRNA和蛋白的表达。结果相对于正常THP-1细胞,LPS诱导后细胞中炎症因子(TNF-α、IL-1β、IL-6)表达明显增加。OEA对TNF-α、IL-1β、IL-6 mRNA和蛋白的表达有抑制作用,并呈现出一定的剂量依赖性。且OEA在激活PPAR-α表达的同时能够抑制TLR4的表达。结论 OEA对LPS诱导的炎症反应有抑制作用,其机制可能与激活PPAR-α,下调TLR4的表达有关
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Last time updated on 16/06/2016