関連する実験動画
Updated: Jun 22, 2026
08:50
A Nonsequencing Approach for the Rapid Detection of RNA Editing
Published on: April 21, 2022
DNAの並列捕捉と配列決定によるヒトRNA編集部位の全ゲノム識別
Jin Billy Li1, Erez Y Levanon, Jung-Ki Yoon
1Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.
Science (New York, N.Y.)
|May 30, 2009
まとめ
研究者らは,新しいスクリーニングアッセイを用いて,何百ものヒトRNA編集部位を特定した. この発見は,脳機能と疾患の研究に不可欠なアデノシンからイノシン (A-to-I) RNA編集の既知の標的を拡大します.
科学分野:
- 分子生物学は分子生物学である.
- ゲノミクスゲノミクスとは
- 神経科学は神経科学である.
背景:
- アデノシンからイノシン (A-to-I) のRNA編集は,トランスクリプトームの多様性の重要な源である.
- A-to-I RNA編集は,正常な脳機能に不可欠である.
- 哺乳類の機能的なA-to-I部位が特定されている数は,依然として限られている.
研究 の 目的:
- A-to-I RNA編集部位をスクリーニングするための公正な分析を開発する.
- 複数の組織にわたるヒトRNA編集部位を包括的にプロファイルする.
- RNA編集標的の既知のレパートリーを拡張する.
主な方法:
- 大規模な並列ターゲットキャプチャとDNAシーケンシングを用いた偏見のない分析を開発しました.
- 36,000以上の計算的に予測されたA-to-Iサイトをスクリーニングしました.
- ゲノムDNAと7つのヒト組織からのRNAを比較した.
主要な成果:
- 数百のヒトRNA編集サイトを検出しました.
- RNA (ADAR) ターゲットの特徴に作用する既知のアデノシンデアミナーゼによる濃縮により特異性が確認された.
- 毛細血管配列解析を用いて検証された結果.
結論:
- 開発されたアッセイは,識別されたRNA編集部位の数を効率的に拡張します.
- このアプローチは,A-to-I RNA編集の既知のターゲットを大幅に増加させます.
- この方法は,RNA編集に関連するヒト疾患の研究に適用できます.
関連する概念動画
02:23RNA Editing
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
03:21RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
02:24Ribosome 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...
03:00Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.