関連する実験動画
Updated: Jul 1, 2026

13:52
Coupled Assays for Monitoring Protein Refolding in Saccharomyces cerevisiae
Published on: July 9, 2013
化学的および生物学的アプローチは,タンパク質折りたたみ疾患の改善に連携します
Ting-Wei Mu1, Derrick Sek Tong Ong, Ya-Juan Wang
1Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
Cell
|September 9, 2008
まとめ
小さな分子は,細胞のプロテオスタシス (タンパク質のホメオスタシス) を強化して,機能喪失疾患における誤った折りたたまれたタンパク質を修正することができます. このアプローチは,単独またはチャペロンとともに,酵素機能を回復し,これらの状態を治療することができます.
科学分野:
- バイオケミストリー バイオケミストリー
- 細胞生物学 細胞生物学
- 遺伝学 遺伝学とは
背景:
- 機能喪失疾患は,タンパク質の折りたたみ,密輸,分泌経路内の分解に影響を与える突然変異から生じます.
- 誤った折りたたまれたタンパク質は,しばしば分解の標的となり,細胞機能障害と疾患の現象型につながります.
研究 の 目的:
- 細胞のプロテオスタシス能力を強化することで,変異した酵素の機能を回復できるかどうかを調査する.
- 機能喪失疾患の治療のための小分子プロテオスタシス調節体と薬理学的なチャペロンの治療の可能性を探求する.
主な方法:
- 小分子プロテオスタシスレギュレータを利用して,エンドプラズマ網膜における展開タンパク質応答 (UPR) を調節した.
- 変異酵素の折り畳み,濃縮,取引に対するこれらのレギュレータの影響を評価した.
- プロテオスタシス調節剤と薬理学的な伴侶を組み合わせたシナギスティック効果を評価した.
主要な成果:
- プロテオスタシス調節体は,変異した酵素の折り畳みを成功裏に強化し,そうでなければ分解されるだろう.
- 正しく折りたたまれた突然変異酵素の濃度の上昇は,密輸機械を巻き込み,2つの異なるリソソーム貯蔵疾患で機能を回復しました.
- プロテオスタシス調節剤と薬理学的なチャペロンの併用は,酵素機能をさらに強化し,相乗効果を示した.
結論:
- 細胞のプロテオスタシスを強化することは,機能喪失性疾患におけるタンパク質の誤折りに対抗する有効な戦略です.
- 小分子プロテオスタシス調節剤は,単独または薬理学的なチャペロンと併用して,潜在的な治療方法を提供します.
- このアプローチは,分泌経路タンパク質の欠陥によって引き起こされる一連の機能喪失疾患の改善に有望である.
関連する概念動画
Protein Folding
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Folding
Overview
Protein Folding
Overview
Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
Amyloid Fibrils
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...

