標的型タンパク質分解のためのブリッジド PROTAC,DNAベースの PROTAC,水害性タグ技術
Pengcheng Gao1, Yue Zhong1, Kaixiu Luo1
1Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Science, Oncological Science and Neuroscience, Mount Sinai Tisch Cancer Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
Advanced drug delivery reviews
|February 18, 2026
まとめ
タンパク質溶解標的キメラ (PROTACs) は,ユビキチン-プロテアソーム系を通じて標的タンパク質を分解することによって,新しい治療アプローチを提供します. 新しいPROTAC技術は,以前は薬剤で治療できなかったタンパク質をターゲットにすることで,治療可能な疾患の範囲を拡大します.
科学分野:
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
- ドラッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー
背景:
- タンパク質分解を標的とするキメラ (PROTACs) は,標的型タンパク質分解 (TPD) のためのユビキチン-プロテアソームシステムを活用します.
- PROTACsは標的タンパク質を触媒的に分解し,従来の阻害剤に比べて明確な利点を提供します.
- PROTAC技術は,臨床開発中の多くの候補者とともに,重要な治療的可能性を示しています.
研究 の 目的:
- 興味のあるタンパク質とE3リガゼの特定の結合剤に依存する古典的なPROTACの限界に対処するために.
- TPDの標的となるタンパク質の範囲を拡大する革新的な戦略を導入し,議論する.
- PROTAC技術の進歩を強調し,より広範な治療用途に活用する.
主な方法:
- 内生タンパク質-タンパク質相互作用を利用した橋渡し型PROTACの開発.
- 小分子結合ポケットを持たない転写因子を分解するDNAベースのPROTAC (TF-PROTAC) の設計.
- タンパク質の誤折りや分解を誘発するために,水害性タグベースの分解剤 (HyTs) の導入.
主要な成果:
- ブリッジド・PROTACは",薬剤耐性"のタンパク質や,あまり研究されていないE3リガゼを標的にすることを可能にします.
- TF-PROTACsは,転写因子を効果的に劣化させ,TPDを以前アクセス不可能なターゲットに拡張します.
- HyTは,経口での生物利用可能性と,タンパク質の誤折りによる標的分解の可能性を提供しています.
結論:
- 革新的な PROTAC 戦略は,標的となるタンパク質の範囲を大幅に拡大します.
- これらの進歩は,標的型タンパク質分解の分野における大きな前進を表しています.
- PROTACの拡張された機能は,さまざまな疾患に対する治療法の発見を強化することを約束しています.
関連する概念動画
Tagging and Fusion Proteins
8.6K
Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
8.6K
The Proteasome
10.3K
Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst 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. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
10.3K
The Proteasome
1.8K
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...
1.8K
Regulated Protein Degradation
9.0K
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...
9.0K
Tail-anchoring of Proteins in the ER Membrane
3.9K
Tail-anchored, or TA, proteins are estimated to make up to 3-5% of membrane proteins found in the eukaryotic cell. Such proteins have a single transmembrane domain located approximately 30 amino acid residues upstream from the C-terminal end. As a result, the signal recognition particle (SRP) cannot guide a TA protein to the ER membrane for cotranslational insertion. Hence, they are integrated into the ER membrane post-translationally using their C-terminal end as the anchor. TA proteins...
3.9K
The Proteasome Structure
1.9K
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...
1.9K


