从单细胞转录组学数据中解读细胞命运决定的驱动调节器,使用CEFCON
Peizhuo Wang1,2, Xiao Wen3, Han Li1
1Institute for Interdisciplinary Information Sciences, Tsinghua University, 100084, Beijing, China.
Nature communications
|December 20, 2023
概括
一个新的网络框架CEFCON准确地推断基因调节网络,并从单细胞RNA测序数据中确定控制细胞命运决定的驱动因素,从而推进细胞系谱映射. 这个工具提供了对细胞分化机制的关键见解.
科学领域:
- 计算生物学 计算生物学
- 基因组学就是基因组学.
- 系统生物学 系统生物学
背景情况:
- 单细胞技术促进了动态细胞命运映射.
- 鉴定基因调节网络和细胞命运决定中的驱动因素仍然具有挑战性.
研究的目的:
- 介绍CEFCON,一种基于网络的框架,用于从单细胞RNA测序 (scRNA-seq) 数据中推断基因调节网络 (GRNs) 和识别细胞命运决定的驱动调节者.
- 使用网络控制理论建模细胞命运动态,揭示与细胞状态相关的关键生物过程.
主要方法:
- 利用带有注意力机制的图形神经网络,从scRNA-seq数据中构建细胞系特异的GRN.
- 应用网络控制理论来建模细胞命运动态,并识别驱动器调节器和基因模块.
- 对GRN和驾驶员监管器识别的基线方法进行了广泛的基准测试.
主要成果:
- 与现有方法相比,CEFCON在GRN构建,驱动器调节器识别和基因模块识别方面表现出卓越的表现.
- 应用于小鼠造血干细胞分化,CEFCON确定了三个发育谱系的关键驱动调节者.
- 识别的监管机构提供了对干细胞分化的网络控制见解.
结论:
- CEFCON是使用scRNA-seq数据剖析细胞命运决定背后的机制的强大工具.
- 该框架增强了对基因调控动态和细胞分化驱动因素的理解.
相关概念视频
Lineage Commitment
3.0K
Commitment is the process whereby stem cells:
3.0K
Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K
Combinatorial Gene Control
8.3K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
8.3K
Regulation of Expression at Multiple Steps
915
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
915


