アルファ-L-リボ構成のロックされた核酸 (アルファ-L-LNA):合成と特性
Mads D Sørensen1, Lisbet Kvaernø, Torsten Bryld
1Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
Journal of the American Chemical Society
|March 7, 2002
まとめ
新しいアルファ-L鎖核酸 (alpha-L-LNA) は,DNAとRNAの標的に対する結合親和性と安定性を向上させています. これらの新種のオリゴヌクレオチドは,分解に対する耐性およびRNAと相互作用する能力により,治療用途の有望性を示しています.
科学分野:
- オリゴヌクレオチドの化学反応
- 薬剤化学 薬剤化学について
- 分子生物学は分子生物学である.
背景:
- ロックされた核酸 (Locked nucleic acids,LNA) は,結合親和性が強化された改変核酸である.
- アルファ-L-リボ構成のLNA (アルファ-L-LNA) は,独特のステレオ化学的構成を示しています.
- アルファ-L-LNAオリゴマーの合成と性質は,β-Dオリゴマと比較して調査されていない.
研究 の 目的:
- アルファ-L-LNAのためのモノメリックヌクレオシドとフォスフォラミジットの構成要素を合成する.
- アルファ-L-LNAオリゴマーの性質,結合親近性,安定性,ヌクレアゼ抵抗性などを調査する.
- 核酸の認識と相互作用におけるアルファ-L-LNAの可能性を評価する.
主な方法:
- バイサイクルヌクレオシド誘導体 (5-メチルサイトシン-1-イルとアデニン-9-イル) の合成.
- フォスフォラミジットアプローチを用いた自動オリゴメリゼーション.
- DNAおよびRNAへの結合親和性を評価するために,熱性デナチュレーション研究 (Tm).
- ヌクレアース抵抗性およびRNase H媒介の分裂を評価するためのインビトロ研究.
主要な成果:
- アルファ-L-LNAモノマーとフォスフォラミジットの構成要素を成功して合成した.
- アルファ-L-LNAオリゴーマーによる単一鎖DNAおよびRNA標的の効率的な認識が実証されています.
- ステレオレギュラーおよびステレオレギュラーα-L-LNA11-mersは,DNAおよびRNAに対する二重複体の有意な安定を示しました.
- アルファ-L-LNAオリゴーマーには,3'-エクソヌクレオリチス分解に対する安定性が向上した.
- アルファ-L-LNAで形成された複合体におけるRNase HによるゆっくりしたRNA分裂の誘導.
結論:
- アルファ-L-LNAの構成要素とオリゴマーの合成は可能である.
- アルファ-L-LNAは,DNAと比較して優れた結合親和性と安定性を示しています.
- これらの発見は,アルファ-L-LNAが核酸ベースの治療および診断のための有望なプラットフォームとしての可能性を強調しています.
さらに関連する動画
09:04Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
08:17Practical Aspects of Sample Preparation and Setup of 1H R1ρ Relaxation Dispersion Experiments of RNA
Published on: July 9, 2021
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...
Ribosomal RNA Synthesis
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribozymes
The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can be...
Ribozymes can be...
Ribosome 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...
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...
Nucleic Acid Structure
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 has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...
