The biological functions of miRNAs: lessons from in vivo studies.

The biological functions of miRNAs: lessons from in vivo studies.
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DOI:
10.1016/j.tcb.2014.11.004
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发表时间:
2015-03
影响因子:
19
通讯作者:
Ventura, Andrea
Ventura, Andrea
中科院分区:
生物学1区
文献类型:
--
作者:
Vidigal, Joana A.;Ventura, Andrea

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尽管它们作为一类调节分子具有明显的重要性,但查明单个 miRNA 的相关性一直具有挑战性。通过过度表达或沉默特定 miRNA 来查询 miRNA 功能的研究所产生的数据通常与从功能丧失模型中收集的数据不一致。此外,敲除研究表明,许多保守的 miRNA 对于动物发育或生存来说是可有可无的。在这篇综述中,我们在目前 miRNA 生物学知识的背景下讨论了这些观察结果,并回顾了在确保生物鲁棒性的机制中涉及 miRNA 介导的基因调控的证据。
Despite their clear importance as a class of regulatory molecules, pinpointing the relevance of individual miRNAs has been challenging. Studies querying miRNA functions by overexpressing or silencing specific miRNAs have yielded data that are often at odds with those collected from loss-of-functions models. In addition, knockout studies suggest that many conserved miRNAs are dispensable for animal development or viability. In this review we discuss these observations in the context of our current knowledge of miRNA biology and review the evidence implicating miRNA-mediated gene regulation in the mechanisms that ensure biological robustness.
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