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Hydroxytyrosol supplementation modulates the expression of miRNAs in rodents and in humans

机译:羟基吡咯醇补充调节啮齿动物和人类中miRNA的表达

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Dietary microRNAs (miRNAs) modulation could be important for health and wellbeing. Part of the healthful activities of polyphenols might be due to a modulation of miRNAs' expression. Among the most biologically active polyphenols, hydroxytyrosol (HT) has never been studied for its actions on miRNAs. We investigated whether HT could modulate the expression of miRNAs in vivo. We performed an unbiased intestinal miRNA screening in mice supplemented (for 8 weeks) with nutritionally relevant amounts of HT. HT modulated the expression of several miRNAs. Analysis of other tissues revealed consistent HT-induced modulation of only few miRNAs. Also, HT administration increased triglycerides levels. Acute treatment with HT and in vitro experiments provided mechanistic insights. The HT-induced expression of one miRNA was confirmed in healthy volunteers supplemented with HT in a randomized, double-blind and placebo controlled trial. HT consumption affects specific miRNAs' expression in rodents and humans. Our findings suggest that the modulation of miRNAs' action through HT consumption might partially explain its healthful activities and might be pharmanutritionally exploited in current therapies targeting endogenous miRNAs. However, the effects of HT on triglycerides warrant further investigations. (C) 2016 Elsevier Inc. All rights reserved.
机译:饮食中的微RNA(miRNA)调节可能对健康和福祉很重要。多酚的部分有益健康的活性可能是由于miRNA表达的调节。在最具生物活性的多酚中,羟基酪醇(HT)对miRNA的作用从未被研究过。我们研究了HT是否可以在体内调节miRNA的表达。我们在补充(8周)营养相关量HT的小鼠中进行了无偏肠道miRNA筛查。HT调节了几种miRNA的表达。对其他组织的分析显示,HT诱导的一致性调节只有少数miRNA。此外,服用HT会增加甘油三酯水平。HT的急性治疗和体外实验提供了机制上的见解。在一项随机、双盲和安慰剂对照试验中,在补充了HT的健康志愿者中证实了HT诱导的一种miRNA的表达。HT摄入会影响啮齿类动物和人类中特定miRNA的表达。我们的研究结果表明,通过摄入HT调节miRNA的作用可能部分解释其有益健康的活性,并可能在当前针对内源性miRNA的治疗中得到药物营养利用。然而,HT对甘油三酯的影响值得进一步研究。(C) 2016爱思唯尔公司版权所有。

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