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相关概念视频

Chromatin Modification in iPS Cells01:32

Chromatin Modification in iPS Cells

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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
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Histone Modification02:32

Histone Modification

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Histone Modification02:32

Histone Modification

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
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相关实验视频

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Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
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解锁表观基因组:在皮层发育中的单细胞基因组概况.

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  • 1Ecole Polytechnique Federal Lausanne (EPFL) | School of Life Sciences | Brain Mind Institute | EpiGN - Epigenomics of Neurodevelopmental Disorders | Station 19, 1015 Lausanne, Switzerland; Ecole Polytechnique Federal Lausanne (EPFL) | School of Life Sciences | Brain Mind Institute | EpiGN - Epigenomics of Neurodevelopmental Disorders | Chemin des Mines 9, 1202 Geneve, Switzerland.

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概括

这项研究使用了先进的表观基因组分析,揭示了像H3K27me3这样的基因组修饰如何在人类大脑发育过程中控制神经原始细胞命运. 多复合表观遗传学为发展过程提供了新的见解.

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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

  • 人类大脑的发育涉及神经前代细胞命运的复杂调节.
  • 表观遗传修饰在细胞分化中起着至关重要的作用.
  • 了解这些机制是解决发育障碍的关键.

研究的目的:

  • 为了研究基因组修饰在控制神经前命运中的作用.
  • 在人类发育中的皮质和皮质器官中描述染色质状态.
  • 探索复杂表观遗传学在研究人类大脑发育中的潜力.

主要方法:

  • 通过飞行时间 (CyTOF) 进行单细胞细胞计,用于高维表观遗传分析.
  • 包括H3K27me3在内的基因组修饰在原始人类皮质细胞和有机体中进行了分析.
  • 数据分析的重点是将染色质状态与神经前代细胞命运相关联.

主要成果:

  • 特定的基因素修饰模式,特别是H3K27me3,被确定为神经前细胞分化的关键调节者.
  • 在初级皮质细胞和皮质器官中观察到不同的染色质状态.
  • 该研究证明了多重表观基因组的可行性,用于详细的发育概况.

结论:

  • 表观遗传调节,特别是H3K27me3,是人类大脑发育过程中神经前代细胞命运的关键决定因素.
  • 复杂表观遗传学是一种强大的方法,用于剖析复杂的发育过程.
  • 这项研究为未来关于大脑发育和相关疾病的研究提供了基础.