関連する実験動画
Updated: Sep 10, 2025

06:16
mirMachine: A One-Stop Shop for Plant miRNA Annotation
Published on: May 1, 2021
2.6K
ナミRNA強化ネットワーク:変化する時代の課題とmiRNAのチャンス
Lu Chen1, Ying Liang2, Hongyan Wei1
1Shanghai Public Health Clinical Center and Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute and Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 26, 2025
まとめ
核活性化マイクロRNA (NamiRNAs) は,DNA増強剤を標的にして遺伝子転写を活性化します. これらのNamiRNAはDNAの鎖を開き,タンパク質を誘導し,活性化のための増強剤をマークし,新しい研究と臨床的可能性を提供します.
科学分野:
- 分子生物学
- エピジェネティクス
- ゲノミクス
背景:
- マイクロRNA (miRNA) は通常,細胞質における遺伝子静止を調節する.
- 核活性化マイクロRNA (NamiRNAs) は,新しいミRNAのクラスを表しています.
- ナミRNAはDNA増強剤を標的にして遺伝子転写を活性化します.
研究 の 目的:
- NamiRNA-Enhancer-mediated Gene Activationのメカニズムを解明する
- ナミRNAの機能と課題を要約する.
- 研究と臨床におけるナミRNAの潜在的な応用について議論する.
主な方法:
- ナミRNA機能に関する既存の文献のレビュー.
- NamiRNA-DNAのハイブリッド形成と安定性の分析
- 標的強化剤における表遺伝的変異 (H3K27ac) の調査
主要な成果:
- ナミRNAはゲノムDNAの鎖を開くための"ケイン"として機能する.
- アルゴナウト2 (AGO2) はmiRNA- DNAハイブリッドを安定させ,分解から保護する.
- ナミRNAはH3K27acの濃縮を誘導し,遺伝子転写の強化剤を活性化します.
結論:
- NamiRNA-Enhancer-mediated Gene Activation (ナミRNA強化媒介による遺伝子活性化) は,基本的な規制メカニズムである.
- ナミRNAは基本的な生物学的研究に重要な可能性を秘めています.
- ナミRNAは臨床応用に有望な可能性を示しています
関連する概念動画
MicroRNAs
3.1K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.1K
siRNA - Small Interfering RNAs
17.0K
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...
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...
17.0K
Experimental RNAi
6.2K
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...
6.2K
RNA Interference
26.4K
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...
26.4K
Nucleic Acid Structure
6.9K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
6.9K
Types of RNA
6.4K
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...
6.4K

