首页> 美国卫生研究院文献>The Scientific World Journal >Sargachromenol from Sargassum micracanthum Inhibits the Lipopolysaccharide-Induced Production of Inflammatory Mediators in RAW 264.7 Macrophages
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Sargachromenol from Sargassum micracanthum Inhibits the Lipopolysaccharide-Induced Production of Inflammatory Mediators in RAW 264.7 Macrophages

机译:Sargassum micracanthum的Sargachromenol抑制脂多糖诱导的RAW 264.7巨噬细胞中炎症介质的产生。

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摘要

During our ongoing screening program designed to determine the anti-inflammatory potential of natural compounds, we isolated sargachromenol from Sargassum micracanthum. In the present study, we investigated the anti-inflammatory effects of sargachromenol on lipopolysaccharide (LPS)-induced inflammation in murine RAW 264.7 macrophage cells and the underlying mechanisms. Sargachromenol significantly inhibited the LPS-induced production of nitric oxide (NO) and prostaglandin E2 (PGE2) in a dose-dependent manner. It also significantly inhibited the protein expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) in a dose-dependent manner in LPS-stimulated macrophage cells. Further analyses showed that sargachromenol decreased the cytoplasmic loss of inhibitor κBα (IκBα) protein. These results suggest that sargachromenol may exert its anti-inflammatory effects on LPS-stimulated macrophage cells by inhibiting the activation of the NF-κB signaling pathway. In conclusion, to our knowledge, this is the first study to show that sargachromenol isolated from S. micracanthum has an effective anti-inflammatory activity. Therefore, sargachromenol might be useful for cosmetic, food, or medical applications requiring anti-inflammatory properties.
机译:在我们正在进行的旨在确定天然化合物抗炎潜能的筛查计划中,我们从Sargassum micracanthum中分离了sargachromenol。在本研究中,我们调查了赛格色素对脂多糖(LPS)诱导的小鼠RAW 264.7巨噬细胞中炎症的抗炎作用及其潜在机制。 Sargachromenol以剂量依赖性方式显着抑制LPS诱导的一氧化氮(NO)和前列腺素E2(PGE2)的产生。在LPS刺激的巨噬细胞中,它也以剂量依赖性方式显着抑制诱导型一氧化氮合酶(iNOS)和环氧合酶2(COX-2)的蛋白表达。进一步的分析表明,sargachromenol降低了抑制剂κBα(IκBα)蛋白的细胞质损失。这些结果表明,sargachromenol可能通过抑制NF-κB信号通路的激活,对LPS刺激的巨噬细胞发挥抗炎作用。综上所述,据我们所知,这是第一项显示从米克链霉菌中分离出的sargachromenol具有有效抗炎活性的研究。因此,sargachromenol可用于需要抗炎特性的化妆品,食品或医疗应用。

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