関連する実験動画
Updated: Jun 21, 2026

13:04
Overexpressing Long Noncoding RNAs Using Gene-activating CRISPR
Published on: March 1, 2019
反感覚オリゴデオキシヌクレオチドによって滑らかな筋肉細胞の増殖を阻害し,増殖細胞の核抗原をコードするメッセンジャーRNAを標的にする
1Cardiology Branch, National Heart, Lung, and Blood Institute, Bethesda, MD 20892.
Circulation
|August 1, 1992
まとめ
増殖細胞核抗原 (PCNA) を標的にするアンチセンセスのオリゴデオキシヌクレオチド (ODN) は,血管の滑らかな筋肉細胞増殖を効果的に抑制します. このアプローチは,冠動脈血管新生手術後のレステノシスの予防に有望であることが示されています.
科学分野:
- 血管生物学 血管生物学
- 分子医学は分子医学である.
- 遺伝子規制 遺伝子規制
背景:
- 血管の滑らかな筋肉細胞 (SMC) の増殖は,冠動脈血管新生手術後のレステノシスの重要な要因です.
- 現在の戦略は,細胞表面成長因子のシグナル伝達を抑制することに焦点を当てています.
- この研究では,細胞内経路を標的とした代替アプローチを探求しています.
研究 の 目的:
- 反感覚オリゴデオキシヌクレオチド (ODN) が,増殖細胞核抗原 (PCNA) 発現を抑制する効果を調査する.
- PCNAを阻害すると,SMCの増殖が減少するかどうかを判断する.
主な方法:
- ネズミの大動脈SMCは,改変された反感覚ODN (15または18メル) で治療されました.
- 濃度は10〜100マイクロMの範囲でした.
- PCNA発現はウェスタン・ブロットと免疫細胞化学を用いて評価され,細胞増殖は細胞数値で測定された.
主要な成果:
- 18メアのアンチセンセスのODNは,集中に依存した方法でSMCの成長を50%以上大幅に低下させた.
- この増殖抑制効果は少なくとも9日間続いた.
- ウェスタン・ブロットと免疫細胞化学では,PCNAタンパク質発現の低下が確認されました.
結論:
- PCNA mRNAを標的としたAntisense ODNは,PCNA遺伝子産物発現を効果的に低下させる.
- このPCNAの減少は,SMCの増殖の減少につながります.
- この発見は,アンチセンセスの戦略を用いた冠動脈静止症の予防のためのさらなるin vivo調査を裏付けている.
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...
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...
Methods of Nuclear Reprogramming
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.
Transducer Mechanism: Nuclear Receptors
Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:

