関連する実験動画
Updated: Jul 3, 2026

08:35
Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
Published on: June 24, 2021
ヒトのトランスクリプトームの深層配列決定による遺伝子活動と代替スプライシングのグローバルビュー
Marc Sultan1, Marcel H Schulz, Hugues Richard
1Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.
まとめ
この研究では,ヒトのトランスクリプトームをシーケンス化し,新しい遺伝子スプライス結合と代替スプライスイベントを明らかにしました. RNA-Sequencing (RNA-Seq) はマイクロアレイよりも多くの遺伝子を特定し,ヒトのトランスクリプトームの理解を深めました.
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:
- 人間のトランスクリプトームの複雑さは,まだ完全に理解されていません.
- ハイ・スループット・シーケンシングは,トランスクリプトミア分析のための高度な方法を提供します.
研究 の 目的:
- ヒト胚性腎臓とB細胞系からヒトトランスクリプトームの高通量シーケンシングを行う.
- 新規のスプライス・ジャンクションを特定し,代替のスプライス・イベントを特徴付ける.
- RNA-Sequencing (RNA-Seq) の遺伝子検出能力をマイクロアレイと比較するために.
主な方法:
- メッセンジャーRNA (mRNA) トランスクリプトのショットガンシーケンシング.
- 配列をマップするためのバイオ情報分析は,ゲノム位置に読みます.
- メッセンジャーRNA (mRNA) スプライシングイベントの識別とカタログ化.
主要な成果:
- 配列化されたトランスクリプトの50%は,ユニークなゲノム位置にマッピングされ,その80%は既知のエクソンに対応しています.
- ポリアデニル化トランスクリプトームの66%は既知の遺伝子にマッピングされ,34%は注釈されていない領域にマッピングされました.
- RNA-Seqは,マイクロアレイよりも25%多くの遺伝子を検出し,以前は知られていなかった4096個を含む94,241個のスプライス結合を特定しました.
- エクソンスキップは,代替スプライシングの最も一般的な形態として特定されました.
結論:
- 高通量RNA-Seqは,マイクロアレイよりも人間のトランスクリプトームのより包括的な見方を提供します.
- トランスクリプトームの有意な部分は,注釈されていない領域にマップされ,未発見のゲノム機能を示唆しています.
- この研究は,既知のスプライス・ジャンクションのカタログを大幅に拡張し,代替スプライシングにおけるエクソン・スキッピングの流行を強調しています.
関連する概念動画
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
What is Gene Expression?
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...
What is Gene Expression?
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
What is Gene Expression?
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Ribosome Profiling
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 helps...
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 helps...

