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Updated: May 12, 2026

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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
メチルトランスファーゼは,昼間の時計を代替スプライシングの調節と結びつける
Sabrina E Sanchez1, Ezequiel Petrillo, Esteban J Beckwith
1IFEVA, Facultad de Agronomía, UBA-CONICET, C1417DSE Buenos Aires, Argentina.
Nature
|October 22, 2010
まとめ
プロテイン・アルギニン・メチル・トランスファーゼ5 (PRMT5) は,日中時計を植物と果物ハエの代替スプライシングと結びつける. この発見は,日々の環境変化と生物学的プロセスを同期するための共通のメカニズムを明らかにしています.
科学分野:
- 分子生物学は分子生物学である.
- クロノバイオロジーはクロノバイオロジーを用います.
- 遺伝学 遺伝学とは
背景:
- シルカディアンリズムは,生物学的プロセスのタイミングに不可欠です.
- 昼間の時計とRNA処理の間の分子リンクは,ほとんど未知のままです.
- トランスクリプション後の調節は,日経ネットワークにとって不可欠であるとますます認識されています.
研究 の 目的:
- シルカディアンクロックと代替スプライシングを結びつけるプロテインアルギニンメチルトランスフェラーゼ5 (PRMT5) の役割を調査する.
- RNA処理の昼夜制御の基礎にある分子メカニズムを解明する.
主な方法:
- アラビドプシス・タリアナとドロソフィラ・メラノガスターのPRMT5変異の分析.
- PRMT5 調節されたスプライシングイベントを特定するための全ゲノム研究.
- サーカディアンリズムと遺伝子発現/スプライシングの振動の評価.
主要な成果:
- PRMT5の変異は,植物と果物ハエの両方の昼夜リズムを乱します.
- PRMT5は,PRR9などのコアクロック遺伝子の代替スプライシングを調節する.
- PRMT5の発現は,日間と昼間の振動を示し,遺伝子発現とスプライシングに影響を与えます.
結論:
- PRMT5は,日中時計を代替スプライシングに接続する重要なレギュラーです.
- 昼間のリズムとスプライシングの間のPRMT5媒介の相互作用は,生理学的プロセスを同期します.
- このメカニズムは,さまざまな生物で保存され,その根本的な重要性を強調しています.
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...
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...
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Circadian Rhythms and Gene Regulation
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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...
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Circadian Rhythms and Gene Regulation
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...

