scPOEM:ピークとピーク遺伝子の規則を明らかにする堅固な共埋め
Yan Zhong1, Yuntong Hou1, Yongjian Yang2
1KLATASDS-MOE, School of Statistics, East China Normal University, Shanghai, China.
Bioinformatics (Oxford, England)
|September 1, 2025
まとめ
scPOEMは単細胞での遺伝子発現とクロマチンのアクセシビリティを共同で分析する新しい方法です. 遺伝子調節関係の識別を改善し,遺伝子調節に関する新しい洞察を提供します.
科学分野:
- エピジェノミクス
- 単細胞ゲノム
- 計算生物学
背景:
- 遺伝子発現に影響を与える規制要素を特定することは,遺伝子調節と病気を理解するために不可欠です.
- 単細胞RNA配列と単細胞ATAC配列は,遺伝子発現とクロマチンのアクセシビリティの同時プロファイリングを可能にします.
- シングル・セル・オミクスのデータ・スパースとノイズは,信号検出に課題をもたらす.
研究 の 目的:
- 単細胞の遺伝子発現とクロマチンのアクセシビリティデータを共同分析するための新しい埋め込み方法を開発する.
- 制御要素の識別と遺伝子との関係を改善する.
- 単細胞解像度での遺伝子調節メカニズムに関する新しい洞察を明らかにする.
主な方法:
- scPOEM (単細胞メタパスベースのOmics EMbedding) は,クロマチンのアクセシビリティピークと表現された遺伝子を共有された低次元空間に投影します.
- ピーク-ピーク,ピーク-遺伝子,遺伝子-遺伝子相互作用を統合し,関連するピーク-遺伝子ペアを密接に表します.
- 強力なデータ統合のためのメタパスベースのアプローチを使用します.
主要な成果:
- scPOEMはピークと遺伝子の安定で信頼できる表現を生成します.
- 生物学的意味のあるピーク遺伝子の規制関係を回復する現行の方法よりも優れている.
- 遺伝子調節のサブグループと微分分析に関する新しい洞察を可能にします.
結論:
- scPOEMは,遺伝子規制メカニズムを明らかにするために,マルチオミクス単細胞データを効果的に統合します.
- 単細胞解像度での転写調節に関する理解を深める.
- エピジェノミクスとトランスクリプトミクス分析のための強力なツールを提供します.
関連する概念動画
01:27Constitutive and Regulated Gene Expression
120
Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
120
01:23Regulation of Expression at Multiple Steps
994
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...
994
02:24Ribosome Profiling
3.6K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.6K
02:33Combinatorial Gene Control
8.4K
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...
8.4K
02:11Reporter Genes
11.8K
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
11.8K
01:58Cell Specific Gene Expression
13.9K
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...
13.9K