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The H3K36me2 methyltransferase NSD1 modulates H3K27ac at active enhancers to safeguard gene expression

Nucleic Acids Res. 2021-06; 
Yuan Fang, Yin Tang, Yanjun Zhang, Yixin Pan, Junqi Jia, Zhongxing Sun, Weiwu Zeng, Jiaqi Chen, Ying Yuan, Dong Fang
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摘要

Epigenetics, especially histone marks, functions beyond the DNA sequences to regulate gene expression. Depletion of NSD1, which catalyzes H3K36me2, leads to both up- and down-regulation of gene expression, indicating NSD1 is associated with both active and repressed gene expression. It's known that NSD1 regulates the deposition and expansion of H3K27me3, a repressive mark for gene expression, to keep active gene transcription. However, how NSD1 functions to repress gene expression is largely unknown. Here, we find that, when NSD1 is knocked out in mouse embryonic stem cells (mESCs), H3K27ac increases correlatively with the decrease of H3K36me2 at active enhancers, which is associated with mesoderm differentiati... More

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