関連する実験動画
Updated: May 8, 2026

13:10
DNA Vector-based RNA Interference to Study Gene Function in Cancer
Published on: June 4, 2012
遺伝子発現:RNAiによる長期的な遺伝子静止
Nadine L Vastenhouw1, Karin Brunschwig, Kristy L Okihara
1Hubrecht Laboratory-KNAW, University of Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.
Nature
|August 25, 2006
まとめ
RNA干渉 (RNAi) は,C. elegans. の遺伝子の持続的な静止を誘発する可能性があります. この遺伝的トランスクリプションサイレンシングは,最初の二重鎖RNAトリガーなしでも発生し,潜在的な治療用途を提供しています.
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
- エピジェネティクス エピジェネティクス
背景:
- RNA干渉 (RNAi) に関与するものを含む小型のRNA分子は,細胞の遺伝子調節において重要な役割を果たします.
- RNAiは通常,メッセンジャーRNA (mRNA) の分解または核内の遺伝子発現の修正を含む.
研究 の 目的:
- 遺伝子発現に対するRNA干渉 (RNAi) の長期的な影響を調査する.
- RNAi誘発の遺伝子サイレンシングがCaenorhabditis elegansの世代を超えて遺伝できるかどうかを判断する.
主な方法:
- ネマトドのCaenorhabditis elegansにおける二重鎖RNAの単一エピソードを使用してRNA干渉 (RNAi) を誘導する.
- 遺伝子発現のモニタリングと,複数の世代における転写サイレンシングの評価.
主要な成果:
- RNAiの単一のインスタンスが,転写遺伝子サイレンシングの遺伝的状態を開始しました.
- 観察された静止は,初期RNAiトリガーの継続的存在とは無関係に無期限に持続しました.
- この表遺伝的遺伝は,ネマトードモデル生物で実証されました.
結論:
- RNAの干渉は,遺伝子の静止の安定した遺伝的表遺伝子状態を確立することができます.
- これらの発見は,RNAiを通じて長期的な遺伝子調節の可能性を強調しています.
- この結果は,遺伝性遺伝子サイレンシングを活用することで,病気に対する新しい治療戦略を示唆しています.
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...
RNA Stability
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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...
piRNA - Piwi-interacting RNAs
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
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...

