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Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

8.3K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
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相关实验视频

Updated: Feb 19, 2026

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience
08:14

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience

Published on: August 26, 2014

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描述人工偏差的人类大脑组织转录组的处理条件.

Moein Yaqubi1, Michael Thomas2,3, Jonathan Talbot-Martin2,3

  • 1Neuroimmunology Unit, Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montreal, Canada.

Nature communications
|February 17, 2026
PubMed
概括
此摘要是机器生成的。

尸检脑组织分析显示,由于死后处理,基因特征发生了变化. 我们开发了一个预测工具,TTRUTH (时间和温度响应基因基础的转录异质性),以标准化大脑的转录数据.

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A Chromatin Assay for Human Brain Tissue
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A Chromatin Assay for Human Brain Tissue

Published on: March 21, 2008

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Non-Laser Capture Microscopy Approach for the Microdissection of Discrete Mouse Brain Regions for Total RNA Isolation and Downstream Next-Generation Sequencing and Gene Expression Profiling |
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Non-Laser Capture Microscopy Approach for the Microdissection of Discrete Mouse Brain Regions for Total RNA Isolation and Downstream Next-Generation Sequencing and Gene Expression Profiling |

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相关实验视频

Last Updated: Feb 19, 2026

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience
08:14

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience

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A Chromatin Assay for Human Brain Tissue
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A Chromatin Assay for Human Brain Tissue

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Non-Laser Capture Microscopy Approach for the Microdissection of Discrete Mouse Brain Regions for Total RNA Isolation and Downstream Next-Generation Sequencing and Gene Expression Profiling |
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Non-Laser Capture Microscopy Approach for the Microdissection of Discrete Mouse Brain Regions for Total RNA Isolation and Downstream Next-Generation Sequencing and Gene Expression Profiling |

Published on: November 13, 2011

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科学领域:

  • 神经科学是一个神经科学.
  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 解剖脑组织对于神经生物学研究至关重要.
  • 死后处理引入了转录文物,使数据解释复杂化.
  • 需要标准化的方法来考虑随时间和温度变化的组织降解.

研究的目的:

  • 基于死后间隔 (PMI) 来描述人类大脑组织的转录变化.
  • 为了识别和定义对人工物敏感的基因,称为脑人工物基因 (BAGs).
  • 开发一个预测签名 (TTRUTH) 用于量化大脑RNA-seq数据中的处理效应.

主要方法:

  • 立即提取的大脑组织的转录基因特征与短 (~6h) 和长 (~36h) PMI进行比较.
  • 将人工物基因特征映射到单核RNA-seq数据上.
  • 利用深度学习来创建TTRUTH预测签名.

主要成果:

  • 与立即提取相比,在短时间和长时间的PMI中观察到显著的基因特征偏差 (BAG).
  • 谷氨酸性神经元显示出早期诱导人工物基因,其次是寡聚细胞.
  • 在TTRUTH签名有效量化处理相关的转录异质性.

结论:

  • 死亡后的时间和温度显著影响大脑的转录数据.
  • TTRUTH签名提供了一个标准化和解释尸检衍生的脑RNA-seq数据集的工具.
  • 这项工作提高了神经生物学研究和样本分层的数据可靠性.