DNAプログラム可能なタンパク質分解:DNAハイブリッド化とストランド移位によるタンパク質分解標的キメラ活動のダイナミック制御
Disha Kashyap1,2, Shozeb Haider3,4,5, Thomas A Milne2
1Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
JACS Au
|August 29, 2025
まとめ
DNAナノテクノロジーは,タンパク質分解を標的とするキメラ (PROTAC) の正確な制御を可能にします. オリゴヌクレオチド結合PROTAC (オリゴプロタC) は,距離依存の分解とダイナミックなオフスイッチを提供し,治療の安全性と機能を強化します.
科学分野:
- バイオテクノロジー
- 分子生物学
- 薬物の発見
背景:
- タンパク質分解を標的とするキメラ (PROTACs) を用いた標的型タンパク質分解は治療上の利点があるが,標的外効果の制御には課題がある.
- 伝統的なPROTAC化学は精密な活性制御を制限し,安全性と選択性を高めるための新しいアプローチを必要とします.
研究 の 目的:
- 精密で制御可能なタンパク質分解のためのオリゴヌクレオチド関連PROTAC (オリゴPROTAC) の設計と特徴づけ
- DNAナノテクノロジーを用いてPROTAC活動のダイナミックなオフスイッチメカニズムを実証する.
主な方法:
- オリゴプロタックを形成するために,補完的なDNA鎖にPROTACの核融合結合.
- DNAのハイブリッド化により PROTACの構成要素を接近させました
- PROTAC活動のダイナミック制御のために,トーホールド媒介のスレッド移転を使用します.
主要な成果:
- OligoPROTACは,対象タンパク質 (POI) の距離依存性分解を示しています.
- PROTACの活性に対する新しい,ダイナミックなオフスイッチメカニズムは,DNA鎖の位移を用いて成功裏に実装されました.
- この研究は,PROTACの機能を改良するDNAナノテクノロジーの可能性を示しています.
結論:
- DNAナノテクノロジーは PROTACの活動を制御する 前例のないプログラム性を提供します
- OligoPROTACsは,より安全で効果的な標的型タンパク質分解療法の開発における重要な進歩を表しています.
- このアプローチはDNAナノテクノロジーと 核酸治療を融合させ 臨床翻訳を改善します
関連する概念動画
Regulated Protein Degradation
7.6K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
7.6K
The Proteasome
1.1K
Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
1.1K
Covalently Linked Protein Regulators
7.1K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
7.1K
Protein Complexes with Interchangeable Parts
2.6K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.6K
Proteins: From Genes to Degradation
3.6K
3.6K
The Proteasome Structure
958
The ubiquitin-proteasome pathway is a well-known mechanism utilized by eukaryotic cells to remove cytoplasmic proteins that are misfolded, damaged, or no longer needed. In this pathway, the protein that needs to be eliminated undergoes a process called ubiquitination, where a chain of ubiquitin molecules is attached to the 48th lysine residue of the target protein. This ubiquitin modification helps the proteasome distinguish between a target protein and a healthy protein.
The proteasome is an...
The proteasome is an...
958


