関連する実験動画
Updated: Jun 10, 2025

05:58
Detecting and Characterizing Protein Self-Assembly In Vivo by Flow Cytometry
Published on: July 17, 2019
10.9K
同性ペプチド折り合いは,FUSの集積を促進し,がん細胞死を引き起こす
Man-Di Wang1,2,3, Li Yi1,3, Yanying Li4
1CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, 100190 Beijing, China.
Journal of the American Chemical Society
|October 15, 2024
まとめ
研究者は,FUSタンパク質を標的とする新しいペプチド折り畳み器 β4-TATを開発しました. このアプローチは,がん細胞のFUS結合を成功裏に誘導し,細胞死につながり,FUSに関連した癌に対する新しい治療戦略を提供します.
科学分野:
- 生物化学
- 分子生物学
- 癌 研究
背景:
- FUSは,サルコマや白血病などの様々な癌に関連したDNA/RNA結合タンパク質です.
- FUSをターゲットにすることは,そのダイナミックな性質のため,治療開発を制限しているため,困難です.
- タンパク質の集積は,病気に関連したタンパク質を標的とする潜在的なメカニズムです.
研究 の 目的:
- FUSタンパク質の集積を標的と誘導するための新しいペプチド折り畳み戦略を開発する.
- FUS RNA 認識モチーフ (RRMs) を標的とする β4-TAT の有効性を調査する.
- FUS関連がんの治療方法として,FUSタンパク質の集積の可能性を調査する.
主な方法:
- FUS RRM由来配列と核標的ペプチド (TAT) を含むβシートペプチド折り畳み器の設計と合成.
- 非共性相互作用とペプチドの自己組み立て原理を使用して,FUSをターゲットにします.
- β4-TATが癌細胞内でFUSの蓄積を誘発する能力を評価する.
主要な成果:
- β4- TATは,FUS RRMs内の類似のβ4配列に特異的に結合する.
- ペプチドは細胞モデルでFUSタンパク質の結合を効果的に誘導する.
- 誘発されたFUS結合は癌細胞の死につながった.
結論:
- 新しいペプチド折りたたみ器ベースの戦略が,タンパク質の集積を誘導するために成功裏に開発されました.
- β4- TATは,FUSに関連した癌を標的とした治療薬としての可能性を示しています.
- このアプローチは,タンパク質の集積をターゲットにすることで,革新的ながん治療を開発するための新しい道を開きます.
関連する概念動画
Amyloid Fibrils
9.3K
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,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.3K
Protein Folding
7.8K
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...
7.8K
The Extrinsic Apoptotic Pathway
6.3K
The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
6.3K
Molecular Chaperones and Protein Folding
17.8K
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...
17.8K
The Intrinsic Apoptotic Pathway
6.4K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.4K
Mitogens and the Cell Cycle
6.4K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.4K

