関連する実験動画
Updated: Jul 18, 2026

06:34
Virus-induced Gene Silencing (VIGS) in Nicotiana benthamiana and Tomato
Published on: June 10, 2009
植物におけるRNAサイレンシング
1The Sainsbury Laboratory, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK. david.baulcombe@sainsbury-laboratory.ac.uk
Nature
|September 17, 2004
まとめ
植物は,遺伝子発現を制御するためにRNAサイレンシング経路を利用します. これらの経路には,信号増幅,細胞間伝播,フィードバックが含まれ,防御とゲノム調節に役割を果たします.
科学分野:
- 植物分子生物学 植物分子生物学
- エピジェネティクス エピジェネティクス
- 遺伝子調節 遺伝子調節
背景:
- 植物には,標的の遺伝子サイレンシングのための複数のRNAサイレンシング経路があります.
- これらの経路は,信号増幅と細胞間通信を促進します.
- 既知の役割には,抗ウイルス防御,遺伝子発現の調節,ヘテロクロマチン形成などがあります.
研究 の 目的:
- RNAサイレンシング経路の機能的多様性を探求する.
- 植物におけるゲノム制御の遺伝的および表遺伝的メカニズムを調査する.
主な方法:
- RNAサイレンシング経路に関する既存の文献のレビュー.
- 遺伝的および表遺伝的調節機構の分析.
主要な成果:
- 植物における少なくとも3つの異なるRNAサイレンシング経路の特定.
- これらの経路内の信号増幅,細胞間伝送,フィードバックの調節の実証.
- 抗ウイルス防御,遺伝子発現調節,クロマチンの凝縮における確立された役割.
結論:
- RNAサイレンシング経路は,植物における多様なゲノム制御機能に不可欠である.
- これらの経路の完全な範囲に関するさらなる調査は正当化されています.
関連する概念動画
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...
Riboswitches
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
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...
siRNA - Small Interfering RNAs
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
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...
Small interfering RNAs (siRNA)
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

