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相关概念视频

RNA-seq03:21

RNA-seq

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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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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
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相关实验视频

Updated: Feb 22, 2026

Multiplexed Analysis of Retinal Gene Expression and Chromatin Accessibility Using scRNA-Seq and scATAC-Seq
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PETScan:基于RNA-Seq和ATAC-Seq数据的得分基因组广泛关联分析.

Yajing Hao1, Tal Kafri2,3,4, Fei Zou1,5

  • 1Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States.

Bioinformatics (Oxford, England)
|February 20, 2026
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概括

PETScan有效地分析基因表达和染色体可访问性数据,改善系统生物学见解. 该工具通过考虑远程基因调节元素相互作用来增强全基因组关联研究.

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科学领域:

  • 系统生物学 系统生物学
  • 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:

  • 像RNA-Seq (基因表达) 和ATAC-Seq (染色体可访问性) 这样的高维测序列数据对于系统生物学至关重要.
  • 目前的方法往往忽略了长距离的cis-regulatory相互作用,并且无法充分建模基于数量的测序数据.
  • 了解基因调节需要分析基因表达和染色质可访问性之间的关联.

研究的目的:

  • 开发一种计算效率高的方法,用于RNA-Seq和ATAC-Seq数据的全基因组关联分析.
  • 通过结合远程监管元素相互作用和容纳基于计数的数据来解决现有工具的局限性.
  • 为发现基因调节机制提供一个强大的工具.

主要方法:

  • 介绍了PETScan,一种基于PEak-Transcript得分的关联分析方法.
  • 利用负二项式模型准确地表示RNA-Seq计数数据.
  • 员工进行得分测试和矩阵计算,以获得计算效率,结合经验变换和基因组控制,以获得有效的p值计算.

主要成果:

  • PETScan证明了计算效率,实现速度比沃尔德测试快三倍.
  • 该方法确定了与现有方法相比较的显著基因峰值对.
  • PETScan有效地分析基因表达和染色体可访问性之间的全基因组关联.

结论:

  • PETScan为分析高维测序列数据提供了一种计算效率高且统计学稳健的方法.
  • 该工具通过考虑局部和远程相互作用来增强对基因调节机制的研究.
  • PETScan为系统生物学研究提供了宝贵的见解,并作为R包提供.