Gadd45a opens up the promoter regions of miR-295 facilitating pluripotency induction.
Gadd45a opens up the promoter regions of miR-295 facilitating pluripotency induction.
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Gadd45a 打开 miR-295 的启动子区域,促进多能性诱导。
DOI:
10.1038/cddis.2017.497
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发表时间:
2017-10-12
影响因子:
9
通讯作者:
Liu X
中科院分区:
文献类型:
--
作者:
Li L;Chen K;Wu Y;Long Q;Zhao D;Ma B;Pei D;Liu X
MicroRNAs (miRNAs) play crucial roles in the establishment of pluripotent state by controlling pluripotent network. However, the molecular mechanisms controlling miRNAs during somatic cell reprogramming remain obscure. In this study, we show Gadd45a (growth arrest and DNA-damage-inducible protein 45a) enhances reprogramming by activating miR-295. Furthermore, we show that Gadd45a binds the promoter regions of miR-295. Nuclease accessibility assay indicates that Gadd45a opens the promoter regions of miR-295. Levels of H3K9Ac and H3K27Ac on the promoter regions of miR-295 were also increased. In conclusion, our results indicate that Gadd45a relaxes the promoter regions of miR-295 and promotes the expression of miR-295 during reprogramming, implying a concise mechanism of Gadd45a and miR-290 cluster cooperation in cell-fate determination.
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