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相关概念视频

RNA-seq03:21

RNA-seq

9.9K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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相关实验视频

Updated: Jun 23, 2025

Author Spotlight: Deciphering the Cellular Mysteries of Intermuscular Adipose Tissue in Humans
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Author Spotlight: Deciphering the Cellular Mysteries of Intermuscular Adipose Tissue in Humans

Published on: May 3, 2024

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一种针对单细胞RNA测序数据中细胞类型特定的个体间变异的强大模型.

Minhui Chen1, Andy Dahl2

  • 1Section of Genetic Medicine, University of Chicago, Chicago, IL, 60637, USA. minhuic@uchicago.edu.

Nature communications
|June 19, 2024
PubMed
概括

一个新的细胞类型特定的线性混合模型 (CTMM) 量化了单细胞RNA测序 (scRNA-seq) 数据中的供体变异. 这揭示了分化阶段特定的基因表达,揭示了新的生物学见解.

科学领域:

  • 基因组学就是基因组学.
  • 计算生物学 计算生物学
  • 发展生物学 发展生物学

背景情况:

  • 单细胞RNA测序 (scRNA-seq) 通常分析每个细胞类型的平均基因表达.
  • 在scRNA-seq研究中,细胞类型内的个体间变异往往被忽视.
  • 了解细胞类型特定变异对于复杂的特征遗传学和细胞生物学至关重要.

研究的目的:

  • 开发一种新的统计模型,CTMM (细胞类型特定的线性混合模型),以检测和量化scRNA-seq数据中的个体间变异.
  • 通过模拟来评估模型的性能和统计能力.
  • 将模型应用于人类诱导的多能干细胞分化数据.

主要方法:

  • 开发了细胞类型特定的线性混合模型 (CTMM) 来分析scRNA-seq数据.
  • 进行了广泛的模拟,以验证CTMM的准确性和功率.
  • 将CTMM应用于人类iPSC分化数据,以分析跨捐赠者和分化阶段的转录组变异.

主要成果:

  • 在模拟中,CTMM证明了对细胞类型特定的个体间变异的强大而公正的检测.
  • 对人类iPSC差异化的分析显示,几乎所有的捐赠者特异性转录组变异性都与差异化阶段有关.

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Droplet Barcoding-Based Single Cell Transcriptomics of Adult Mammalian Tissues

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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations

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相关实验视频

Last Updated: Jun 23, 2025

Author Spotlight: Deciphering the Cellular Mysteries of Intermuscular Adipose Tissue in Humans
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Author Spotlight: Deciphering the Cellular Mysteries of Intermuscular Adipose Tissue in Humans

Published on: May 3, 2024

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Droplet Barcoding-Based Single Cell Transcriptomics of Adult Mammalian Tissues
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Droplet Barcoding-Based Single Cell Transcriptomics of Adult Mammalian Tissues

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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations

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  • 鉴定了85个基因,其显著的特定阶段变异在平均表达中并不明显,并分割了个体间共变量以模拟差异化轨迹.

    • 结论:

    • CTMM是一种有效的工具,用于表征scRNA-seq数据中的细胞类型特定变异.
    • 该模型强调了差异化阶段在塑造个人间的转录组差异中的关键作用.
    • CTMM为细胞类型特定的生物学和复杂特征的遗传基础提供了新的见解.