相关实验视频

Updated: Jun 19, 2026

Identification of Key Factors Regulating Self-renewal and Differentiation in EML Hematopoietic Precursor Cells by RNA-sequencing Analysis

Identification of Key Factors Regulating Self-renewal and Differentiation in EML Hematopoietic Precursor Cells by RNA-sequencing Analysis

Published on: November 11, 2014

基于60770个全长cDNA的功能注释,对小鼠转录组的分析

Y Okazaki¹, M Furuno, T Kasukawa

¹[1] Laboratory for Genome Exploration Research Group, RIKEN Genomic Sciences Center, RIKEN Yokohama Institute 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.

|December 6, 2002

概括

研究人员手动注释了小鼠的互补DNA序列,确定了33409个转录单元. 这项全面的调查揭示了非编码RNA和鼠标转录组中的替代拼接在鼠标转录组中的重要作用.

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.
分子生物学分子生物学

背景情况:

鼠标基因组的转录区域尚未完全理解.
识别全长的信使RNA (mRNA) 转录对于功能基因组学至关重要.
一项全球性的努力旨在对老鼠mRNA转录进行分类,并创建物理克隆收藏.

研究的目的:

为了手动注释一大组全长的小鼠互补DNA (cDNA) 序列.
建立一个全面的鼠标转录组数据库.
描述小鼠转录单元的多样性和复杂性.

主要方法:

手动注释了60,770个全长小鼠cDNA序列.
将cDNA序列聚集成转录单元.
全转录组分析以确定转录特征和相互作用.

主要成果:

标注产生了33,409个转录单元,占新鼠标转录组数据库的90.1%.
确定了4,258个新的蛋白质编码和11,665个新的非编码信息,突出显示了非编码RNA的重要性.
在41%的单元中观察到替代拼接,其中79%的编码转录中改变了蛋白质产品;发现了2,431个感觉-反感觉对.

结论:

这项工作提供了迄今为止最广泛的哺乳动物转录组调查,完全由物理克隆提供支持.
这些发现强调了非编码RNA和替代拼接对转录组复杂性的重大贡献.
这一全面的数据集将成为未来哺乳动物功能基因组学研究的宝贵资源.

更多相关视频

Identification of Alternative Splicing and Polyadenylation in RNA-seq Data

Identification of Alternative Splicing and Polyadenylation in RNA-seq Data

Published on: June 24, 2021

An Integrated Approach for Microprotein Identification and Sequence Analysis

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

相关概念视频

Complementary DNA

Complementary DNA

Mechanical Protein Function

Mechanical Protein Function

Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.