Inhibition of natural antisense transcripts in vivo results in gene-specific transcriptional upregulation.

Inhibition of natural antisense transcripts in vivo results in gene-specific transcriptional upregulation.
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DOI:
10.1038/nbt.2158
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发表时间:
2012-03-25
影响因子:
46.9
通讯作者:
--
中科院分区:
工程技术1区
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在这里,我们证明,天然反义转录本(NAT),这是丰富的哺乳动物基因组中,可以作为特定基因组位点的阻遏物,其去除或抑制AntagoNAT寡核苷酸导致正义基因表达的瞬时和可逆的上调。作为一个例子,我们表明,脑源性神经营养因子(BDNF)的控制下,保守的非编码反义RNA转录,BDNF-AS,在体外和体内。BDNF-AS通过改变BDNF基因座处的染色质结构来紧张性地抑制BDNF正义RNA转录,这反过来降低内源性BDNF蛋白和功能。通过提供额外的和类似的内源性mRNA上调的例子,我们认为,反义RNA介导的转录抑制是一种常见的现象。总之,我们证明了一种新的药理学策略,通过这种策略,内源性基因表达可以以基因座特异性的方式上调。
Here we demonstrate that natural antisense transcripts (NATs), which are abundant in mammalian genomes, can function as repressors of specific genomic loci and that their removal or inhibition by AntagoNAT oligonucleotides leads to transient and reversible upregulation of sense gene expression. As one example, we show that Brain-Derived Neurotrophic Factor (BDNF) is under the control of a conserved noncoding antisense RNA transcript, BDNF-AS, both in vitro and in vivo. BDNF-AS tonically represses BDNF sense RNA transcription by altering chromatin structure at the BDNF locus, which in turn reduces endogenous BDNF protein and function. By providing additional and analogous examples of endogenous mRNA upregulation, we suggest that antisense RNA mediated transcriptional suppression is a common phenomenon. In sum, we demonstrate a novel pharmacological strategy by which endogenous gene expression can be upregulated in a locus-specific manner.
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