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首页> 外文期刊>Neuron >Pioneer Factor NeuroD1 Rearranges Transcriptional and Epigenetic Profiles to Execute Microglia-Neuron Conversion
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Pioneer Factor NeuroD1 Rearranges Transcriptional and Epigenetic Profiles to Execute Microglia-Neuron Conversion

机译:先驱因子Neurod1重新排列转录和表观遗传型以执行Microglia-neuron转换

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摘要

Minimal sets of transcription factors can directly reprogram somatic cells into neurons. However, epigenetic remodeling during neuronal reprogramming has not been well reconciled with transcriptional regulation. Here we show that NeuroD1 achieves direct neuronal conversion from mouse microglia both in vitro and in vivo. Exogenous NeuroD1 initially occupies closed chromatin regions associated with bivalent trimethylation of histone H3 at lysine 4 (H3K4me3) and H3K27me3 marks in microglia to induce neuronal gene expression. These regions are resolved to a monovalent H3K4me3 mark at later stages of reprogramming to establish the neuronal identity. Furthermore, the transcriptional repressors Scrt1 and Meis2 are induced as NeuroD1 target genes, resulting in a decrease in the expression of microglial genes. In parallel, the microglial epigenetic signature in promoter and enhancer regions is erased. These findings reveal NeuroD1 pioneering activity accompanied by global epigenetic remodeling for two sequential events: onset of neuronal property acquisition and loss of the microglial identity during reprogramming.
机译:最小的转录因子集可以将重新编程的体细胞直接转化为神经元。然而,神经元重编程期间的表观遗传重塑并未与转录调控进行很好的调整。在这里,我们显示Neurod1从体外和体内从小鼠微胶质中达到直接神经元转化。外源神经元1最初占据与Microglia中的赖氨酸4(H3K4ME3)和H3K27ME3标记的组蛋白H3的二价染色体的闭合染色质区域,以诱导神经元基因表达。这些区域在重新编程的后期重新编程以建立神经元标识的阶段被解析为单价H3K4ME3标记。此外,转录抑制剂Scrt1和Meis2被诱导为Neurod1靶基因,导致微胶质基因的表达降低。并行地,擦除了启动子和增强子区域的微胶质表观遗传签名。这些发现揭示了Neurod1伴随着两种顺序事件的全球表观遗传重塑的开创性活动:在重新编程期间发病了神经元性质的扰动和丧失显微胶囊同一性。

著录项

  • 来源
    《Neuron》 |2019年第3期|共21页
  • 作者单位

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Fukuoka Univ Fac Pharmaceut Sci Dept Neuropharmacol Fukuoka Fukuoka Japan;

    Kyushu Univ Fac Dent Sci Dept Aging Sci &

    Pharmacol Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Biochem Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Biochem Fukuoka Fukuoka Japan;

    Tokyo Inst Technol Inst Innovat Res Cell Biol Unit Tokyo Japan;

    Univ Tokyo Inst Mol &

    Cellular Biosci Res Ctr Epigenet Dis Lab Genome Struct &

    Funct Tokyo;

    RIKEN Ctr Life Sci Technol Genome Network Anal Support Facil GeNAS Yokohama Kanagawa Japan;

    Fukuoka Univ Fac Pharmaceut Sci Dept Neuropharmacol Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

    Kyushu Univ Grad Sch Med Sci Dept Stem Cell Biol &

    Med Fukuoka Fukuoka Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 神经病学;
  • 关键词

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