由指定的DNA双加氧酶控制的肌肉再生

哺乳动物中有三个Tet羟甲基化酶家族成员，Tet1、tet2和tet3。tet2可以在体内特异性地促进骨骼肌再生和肌肉干细胞的分化与融合。RNA-SEQ和全基因组甲基化测序表明，tet2可以促进MyoG增强子的去甲基化。此外，tet2可以促进MyoD在增强子位点的结合和该区域染色质结构的开放。MyoG增强子的激活和开放可以导致MyoG启动子的开放和MyoG基因表达的激活，从而调节肌肉干细胞的功能。这项工作揭示了tet2调节肌肉生成的机制。

There are three members of the Tet hydroxymethylase family in mammals: TET1, TET2, and TET3. TET2 specifically promotes skeletal muscle regeneration, as well as the differentiation and fusion of muscle stem cells in vivo. RNA sequencing (RNA-seq) and whole-genome methylation sequencing have revealed that TET2 facilitates the demethylation of the MyoG enhancer. Furthermore, TET2 promotes the binding of MyoD to enhancer loci and the opening of chromatin in this region. The activation and opening of the MyoG enhancer can lead to the opening of the MyoG promoter and the activation of MyoG gene expression, thereby regulating the function of muscle stem cells. This work elucidates the mechanism by which TET2 regulates myogenesis.

搜集汇总

背景与挑战

背景概述

该数据集研究了DNA双加氧酶Tet2调控小鼠肌肉再生的分子机制，通过RNA-Seq、ATAC-seq和Bisulfite-Seq技术分析肌肉干细胞，揭示Tet2通过促进MyoG增强子去甲基化和染色质开放来激活基因表达。数据集包含20个样本，涵盖转录组和表观基因组数据，总容量254.34 GB，聚焦于Tet家族基因敲除模型的比较分析。