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首页> 外文期刊>Journal of Cellular Physiology >A Novel Biological Role of alpha-Mangostin in Modulating Inflammatory Response Through the Activation of SIRT-1 Signaling Pathway
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A Novel Biological Role of alpha-Mangostin in Modulating Inflammatory Response Through the Activation of SIRT-1 Signaling Pathway

机译:小说alpha-Mangostin的生物学作用调节炎症反应通过激活sirt - 1基因的信号通路

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Several studies have shown that xanthones obtained from Garcinia Mangostana (GM) have remarkable biological activities. alpha-mangostin (alpha-MG) is the main constituent of the fruit hull of the GM. Several findings have suggested that SIRT-1, a nuclear histone deacetylase, could influence cellular function by the inhibition of NF-kappa B signaling. ROS can inhibit SIRT-1 activity by initiating oxidative modifications on its cysteine residues, and suppression of SIRT-1 enhances the NF-kappa B signaling resulting in inflammatory responses. The goals of the present study were to evaluate the quantity of alpha-MG in the methanolic extract of GM (Vithagroup Spa) and to investigate the activity of this xanthone in U937 cell line and in human monocytes from responsive to inflammatory insult analyzing the possible changes on the activation of SIRT-1 protein via NF-kappa b. Cells were treated with the methanolic extract of GM and/or LPS. The chromatographic separation of alpha-MG was performed by an HPLC analysis. EX 527, a specific SIRT-1 inhibitor, was used to determine if SIRT-1/Nf kappa B signaling pathway might be involved in alpha-MG action on cells. Our results show that alpha-MG inhibits p65 acetylation and down-regulates the pro-inflammatory gene products as COX-2, iNOS via SIRT-1 activation. Cells treated with EX 527 showed an up-regulation of NF kappa B acetylation and an over expression of inducible enzymes and their product of catalysis (NO and PGE2). These results suggest that alpha-MG may be useful for the development of alternative pharmacological strategies aimed at reducing the inflammatory process. (C) 2016 Wiley Periodicals, Inc.
机译:多项研究表明,氧杂蒽酮从藤黄属植物Mangostana (GM)有显著生物的活动。的果壳的主要成分是通用。一些研究表明,sirt - 1基因,核组蛋白脱乙酰酶,可能影响抑制nf -κB细胞功能信号。初始氧化对其进行修改半胱氨酸残基,和sirt - 1基因的抑制增强了nf -κB信号导致炎症反应。研究评估alpha-MG的数量methanolic提取的通用(Vithagroup Spa)和调查活动的氧杂蒽酮在人类单核细胞U937细胞线分析响应炎症侮辱可能激活sirt - 1基因的变化蛋白质通过nf -κb细胞被处理通用汽车和/或有限合伙人的methanolic提取。色谱分离alpha-MG由高效液相色谱分析。sirt - 1基因抑制剂,用于确定sirt - 1基因/ NfκB信号通路参与细胞alpha-MG行动。表明alpha-MG抑制p65乙酰化作用下调炎性基因产品通过激活sirt - 1基因cox - 2,进气阀打开。治疗527例显示NF的老年病κB乙酰化和过度表达诱导酶和催化作用的产品(没有和PGE2)。alpha-MG可能有用的的发展旨在替代药物策略减少炎症过程。期刊、公司。

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