関連する実験動画
Updated: Jul 13, 2026

07:23
Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
まとめ
研究者はマウスのゲノムトランスクリプトをマッピングし,16,000以上の新しいタンパク質コード配列を特定し,複雑なトランスクリプションパターンを明らかにしました. これは,発達中の哺乳類の遺伝子調節を研究するための基礎を提供します.
科学分野:
- ゲノミクスゲノミクスとは
- 分子生物学は分子生物学である.
- トランスクリプトミクス (Transcriptomics) とは
背景:
- タンパク質をコードするトランスクリプトの完全な補完を理解することは,遺伝子の機能と調節を解読するために不可欠です.
- 以前の研究はマウストランスクリプトームの部分的な見解を提供しており,より包括的な分析が必要である.
研究 の 目的:
- マウスのゲノムにおけるトランスクリプションの開始部位と終了部位を包括的にマッピングする.
- 以前未知の完全な補完DNA (cDNA) を特定し,トランスクリプトの変異を分析する.
- 哺乳類の転写調節の比較分析のための基本的なデータセットを確立する.
主な方法:
- トランスクリプションの開始・終了地点に関する包括的な調査.
- マウスゲノムから採取した全長補完DNA (cDNA) の分析.
- 特定されたトランスクリプトのゲノムマッピング.
主要な成果:
- 181,047のトランスクリプトの5'と3'境界の識別.
- 新しいマウスタンパク質をコードするトランスクリプトが16,247個発見され,そのうち5,154個が新しいタンパク質をコードしている.
- 代替プロモーターの使用,スプライシング,およびポリアデニレーションによる広範なトランスクリプト変異の観察.
- ゲノムマッピングにより,トランスクリプションが重複する"トランスクリプションの森"と,活動が低い"砂漠"が明らかになった.
結論:
- この研究は,マウストランスクリプトームの前例のない包括的な見方を提供しています.
- 特定された新しいトランスクリプトと規制に関する洞察は,哺乳類の発達と分化に関する研究のための新しい道を開く.
- このデータセットは,将来の比較ゲノミクスとトランスクリプトミクス研究のための重要なプラットフォームとして機能します.
関連する概念動画
Transcription
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Chromatin Position Affects Gene Expression
Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the timing and level of...
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the timing and level of...
Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription
Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
General Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...

