Bio-objects as "boundary crawlers:" the case of microRNAs.

Bio-objects as "boundary crawlers:" the case of microRNAs.
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DOI:
10.3325/cmj.2012.53.285
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发表时间:
2012-06
影响因子:
1.9
通讯作者:
Martinelli L
Martinelli L
中科院分区:
医学4区
文献类型:
--
作者:
Chrupek M;Siipi H;Martinelli L

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MicroRNAs(MiRNAs)是由21-25个核苷酸组成的短RNAs,在基因表达和调控、生物过程以及包括癌症在内的人类病理中都有表达。由于植物来源的miRNAs可以在消化和烹饪过程中存活并进入动物(包括人类)血清和组织中,因此它们对哺乳动物基因表达和调控的干预是可以预期的。事实上,小鼠的实验喂养表明,一类miRNA(MIR168a)参与了低密度脂蛋白(LDL)的积累,低密度脂蛋白是人类血浆中主要的胆固醇载脂蛋白。考虑到低密度脂蛋白在动脉粥样硬化中的作用,来自食物来源的miRNAs对我们的健康的负面影响是可以预见的。在这里,我们集中讨论miRNAs通过饮食和充当“边界爬行者”跨越国界的能力。植物与人类之间的界限是在一个新的视角下提出的,其中提出了属于完全不同王国的两个基因组-哺乳动物和植物-之间的新的亲密关系。还讨论了食品作为分子载体在人体健康中的作用。最后,将miRNAs作为对医学和文化问题都有影响的“生物对象”的一个例子来介绍。
microRNAs (miRNAs), short RNAs of 21-25 nucleotides, are implied in gene expression and regulation, in biological processes and in human pathologies including cancer. Since miRNAs of plant origin can survive digestion and cooking and enter in animal (including human) sera and tissues, their intervention in mammalian gene expression and regulation might be expected. Mouse experimental feeding, in fact, showed that a miRNA class (MIR168a) is involved in accumulation of the low-density lipoprotein (LDL), the major cholesterol-carrying lipoprotein of human plasma. Considering LDL’s role in atherosclerosis, a negative influence of miRNAs from food origin on our health may be expected. Here we concentrate on the miRNAs’ capability to cross inter-kingdom boundaries through the diet and acting as a “boundary crawler.” The boundary between plant and human is presented under a new perspective, where a new intimate relationship between two genomes – mammalian and plant – belonging to quite different kingdoms is proposed. The food’s role as molecule carrier in our health is also discussed. miRNAs, finally, are presented as an example of “bio-objects” with impact on both medical and cultural issues.
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