関連する実験動画
Updated: May 12, 2026

10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
Sam68のリン酸化によるスプライシングの信号依存的調節
Nathalie Matter1, Peter Herrlich, Harald König
1Forschungszentrum Karlsruhe GmbH, Institut für Toxikologie und Genetik, Postfach 3640, D-76021 Karlsruhe, Germany.
Nature
|December 13, 2002
まとめ
この研究は,細胞外信号によって調節されるSam68タンパク質の改変が,代替スプライシングを制御することを明らかにしています. このメカニズムは,信号伝導経路と遺伝子発現の複雑さを結びつける.
科学分野:
- 分子生物学は分子生物学である.
- セルラー・シグナリング
- 遺伝学 遺伝学とは
背景:
- 人間の複雑性は,代替的な前メッセンジャーRNAスプライシングを通じて多様なタンパク質を生成することから生じる.
- 代替スプライシングは,トランスクリプション制御に似た,しばしば細胞外信号の影響を受ける,正確な規制を必要とします.
- 信号伝導とスプライス調節の相互作用は,細胞プロセスにとって極めて重要です.
研究 の 目的:
- 信号伝達経路と代替スプライシング規制の関連性を調査する.
- 細胞外シグナルに反応する代替スプライシングの新たなレギュレータを特定する.
- 信号制御による代替スプライシングにおけるSam68タンパク質の役割を明らかにする.
主な方法:
- 細胞外信号調節キナーゼ (ERK) の標的としてSam68を研究した.
- 分析されたSam68は,CD44v5エクソンのスプライス調節要素に結合する.
- Sam68の強制発現と抑制を,サイト指向型変異生成と共に,スプライシングにおけるその機能を評価するために利用した.
主要な成果:
- Sam68は,新しいERK標的タンパク質として特定されています.
- Sam68は,Ras信号伝達経路によって調節されるサイトであるCD44v5エクソンと結合します.
- ERK媒介によるSam68のリン酸化はCD44v5エクソン含有性を高め,Sam68の抑制はRas経路誘発のスプライシングを廃止する.
結論:
- Sam68は,細胞外信号を統合して,代替スプライシングの重要な調節体として作用する.
- ERKによるSam68のタンパク質改変は,スプライス調節におけるその機能に不可欠である.
- この研究は,Sam68を信号依存の代替スプライシングレギュレータのプロトタイプとして定義しています.
関連する概念動画
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Chromatin Structure Regulates pre-mRNA Processing
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
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...
Pre-mRNA Processing: RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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...

