Cas9 Functionally Opens Chromatin.

Cas9 Functionally Opens Chromatin.
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DOI:
10.1371/journal.pone.0152683
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发表时间:
2016
期刊:
影响因子:
3.7
通讯作者:
Sherwood RI
Sherwood RI
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Barkal AA;Srinivasan S;Hashimoto T;Gifford DK;Sherwood RI

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我们利用一种核酸酶失活的Cas9突变体表明,Cas9可重复地在先前无法接近的基因组位点诱导染色质可及性。Cas9对染色质的开放足以使定居者转录因子视黄酸受体在先前未结合的基序上实现相邻结合和转录激活。因此,我们展示了Cas9在增加周围染色质可及性以改变局部转录因子结合方面的一种新用途。
Using a nuclease-dead Cas9 mutant, we show that Cas9 reproducibly induces chromatin accessibility at previously inaccessible genomic loci. Cas9 chromatin opening is sufficient to enable adjacent binding and transcriptional activation by the settler transcription factor retinoic acid receptor at previously unbound motifs. Thus, we demonstrate a new use for Cas9 in increasing surrounding chromatin accessibility to alter local transcription factor binding.