Targeting human microRNA genes using engineered Tal-effector nucleases (TALENs).

Targeting human microRNA genes using engineered Tal-effector nucleases (TALENs).
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DOI:
10.1371/journal.pone.0063074
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
O'Connell RM
O'Connell RM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hu R;Wallace J;Dahlem TJ;Grunwald DJ;O'Connell RM

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microRNA(miRNAs)由于其对关键蛋白质编码基因的表达的精确控制而迅速成为哺乳动物生理学的重要调节因子。尽管我们对miRNAs在小鼠中如何发挥作用的理解取得了重大进展,但仍然需要能够靶向和编辑人类基因组中的miRNAs基因。在这里,我们报告了一种新的方法来破坏人类miRNA基因离体使用工程TAL效应(TALE)蛋白作为核酸酶(TALEN),特异性靶向和破坏人类miRNA基因的功能。我们证明了功能性TALEN对可以被设计成能够破坏miRNA种子区或去除整个发夹序列,并使用这种方法成功地靶向几种生理相关的人类miRNA,包括miR-155 *,miR-155,miR-146a和miR-125b。这项技术将大大提高研究人类细胞中miRNA的调控和功能的能力,并可能发展成为一种战略手段,通过这种手段,可以在人类疾病期间靶向治疗miRNA。
MicroRNAs (miRNAs) have quickly emerged as important regulators of mammalian physiology owing to their precise control over the expression of critical protein coding genes. Despite significant progress in our understanding of how miRNAs function in mice, there remains a fundamental need to be able to target and edit miRNA genes in the human genome. Here, we report a novel approach to disrupting human miRNA genes ex vivo using engineered TAL-effector (TALE) proteins to function as nucleases (TALENs) that specifically target and disrupt human miRNA genes. We demonstrate that functional TALEN pairs can be designed to enable disruption of miRNA seed regions, or removal of entire hairpin sequences, and use this approach to successfully target several physiologically relevant human miRNAs including miR-155*, miR-155, miR-146a and miR-125b. This technology will allow for a substantially improved capacity to study the regulation and function of miRNAs in human cells, and could be developed into a strategic means by which miRNAs can be targeted therapeutically during human disease.
microRNA和心血管疾病。
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