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相关概念视频

General Transcription Factors01:30

General Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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相关实验视频

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IR-TEx: An Open Source Data Integration Tool for Big Data Transcriptomics Designed for the Malaria Vector Anopheles gambiae
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TransTEx:一种新的组织特异性评分方法,用于将人体转录基因组分为不同的表达群.

Pallavi Surana1, Pratik Dutta1, Ramana V Davuluri1

  • 1Department of Biomedical Informatics, Stony Brook University, Stony Brook, NY 11794, USA.

Bioinformatics (Oxford, England)
|August 9, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了TransTEx,这是一种分析转录水平组织表达的新方法,识别组织特异性转录对于理解基因调节至关重要. 这种方法揭示了人体组织中复杂的异形水平表达模式.

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科学领域:

  • 基因组学就是基因组学.
  • 文字转录学 (Transcriptomics) 是一个学科.
  • 生物信息学是一种生物信息学.

背景情况:

  • 人体组织表现出不同的分子过程,但传统的基因水平分析忽略了转录变异和蛋白质异型.
  • 替代拼接和异形表达的变化与疾病预后和耐药性有关.

研究的目的:

  • 开发和应用一种新的方法,TransTEx (转录水平组织表达),以根据组织特异性对转录进行评分和分组.
  • 以比基因水平分析更细的分辨率分析人类转录表达模式.

主要方法:

  • TransTEx将顺序切断用于转录概率估计,P值和折叠变化值.
  • 该方法应用于GTEx mRNA-seq数据,将199166个人类转录分为组织特定,增强,广泛表达,低表达和零组.
  • 分析涉及重叠的大脑特异性转录与scBrainMap数据库中的细胞类型标记.

主要成果:

  • TransTEx将转录分为组织特异性 (TSp),组织增强,广泛表达 (Wide),低表达 (Low) 和没有表达 (Null) 的组.
  • 丸显示TSp同型的数量最多 (13,466),其次是肝脏,大脑,垂体和肌肉.
  • 替代转录的组织特异性在很大程度上受到替代促进体使用的影响.
  • 63%的大脑特异性转录被丰富在非神经元细胞类型中,主要是星球细胞,内皮细胞和寡头细胞.
  • 鉴定了与细胞类型标记器相关的脑特异性和丸特异性替代转录,突出了复杂的异形水平调节.

结论:

  • TransTEx提供了一种强大的方法来分析转录水平的组织表达和识别组织特异性异构体.
  • 这些发现强调了同形水平分析对于理解组织特异性基因调节和细胞类型特异性的重要性.
  • TransTEx可以应用于批量和单细胞RNA-seq数据,以发现新型异形水平基因标记物.