二重鎖RNAによる遺伝子サイレンシングのメカニズム
Gunter Meister1, Thomas Tuschl
1Laboratory of RNA Molecular Biology, The Rockefeller University, 1230 York Avenue, Box 186, New York, New York 10021, USA.
Nature
|September 17, 2004
まとめ
二重鎖RNA (dsRNA) は遺伝子発現を調節し,RNAサイレンシング経路を誘発する. dsRNAを短い二重複に処理することは,これらの遺伝子サイレンシングメカニズムを誘導するために不可欠です.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- バイオケミストリー バイオケミストリー
背景:
- 二重鎖RNA (dsRNA) は,真核生物の遺伝子発現を調節する上で重要な役割を果たします.
- RNAのサイレンシングは,RNAの干渉としても知られており,dsRNAによって開始された様々な遺伝子サイレンシングメカニズムを網羅しています.
研究 の 目的:
- RNAサイレンシング経路の基本的メカニズムを探求する.
- 遺伝子調節におけるdsRNA処理の重要性を強調する.
- RNAサイレンシングに関与するコンポーネントを特定し,特徴づけること.
主な方法:
- dsRNA処理経路の分析. dsRNA処理経路の分析. dsRNA処理経路の分析. dsRNA処理経路の分析. dsRNA処理経路の分析. dsRNA処理経路の分析.
- 短いdsRNAのデュプレックス形成と機能の調査.
- RNAサイレンシングの機械部品の特徴.
主要な成果:
- dsRNAを短く,特徴的な二重複に処理することは,既知の静音化経路の重要なステップです.
- これらの短いdsRNAsは,特定のRNAサイレンシングメカニズムのためのガイドとして機能します.
- RNAのサイレンシング機構の包括的な理解に向けて進展が進んでいます.
結論:
- dsRNAの処理は,効果的な遺伝子サイレンシングを開始するために不可欠です.
- RNAサイレンシングの構成要素とメカニズムを完全に解明するためのさらなる研究が期待されています.
関連する概念動画
Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
Regulation of Expression at Multiple Steps
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 addition of a...


