Late-stage peptide modification with salicylaldehyde tag enhances affinity for nuclear factor-kappa B essential
Mattia Mason1, Kaliroi Peqini2, Federico Uggeri1
1Università degli Studi di Milano, Dipartimento di Chimica 20133 Milano Italy alberto.dalcorso@unimi.it.
RSC chemical biology
|December 12, 2025
まとめ
Researchers developed a new peptide functionalization method using salicylaldehyde (SA) tags for reversible-covalent ligands. This technique improved binding affinity to NEMO, a key protein in inflammation pathways, offering potential therapeutic applications.
科学分野:
- ケミカルバイオロジー
- 医薬品化学
- 分子生物学
背景:
- Nuclear factor kappa-light-chain-enhancer of activated B cells(NFκB)は、炎症応答における重要な転写因子です。
- NEMO(NF-κB essential modulator)は、NFκBシグナル伝達経路における重要なタンパク質であり、治療標的となります。
- ペプチドベースのリガンドは特異性を提供しますが、結合親和性と安定性を向上させるための最適化が必要となることがよくあります。
研究 の 目的:
- サリチルアルデヒド(SA)タグを使用した新しいlate-stageペプチド官能基化戦略を開発すること。
- このSAタグ付けアプローチに基づいて、リジンを標的とする可逆的共有結合性リガンドを設計および合成すること。
- SAタグ付きペプチドをNEMOの結合剤として評価し、その結合親和性を評価すること。
主な方法:
- サリチルアルデヒド(SA)タグによるペプチドのlate-stage官能基化。
- リジン残基を標的とする可逆的共有結合性リガンドの設計。
- 既知のNEMO結合ペプチド配列へのSAタグ付け戦略の適用。
- 結合親和性評価のための蛍光異方性スクリーニング。
主要な成果:
- SAタグで修飾されたペプチドのlate-stage官能基化に成功しました。
- SAタグで修飾されたペプチドは、可逆的共有結合性リガンドとしての可能性を示しました。
- スクリーニングにより、野生型ペプチドと比較してNEMOへの結合親和性が大幅に向上したSAタグ付きペプチドが同定されました。
結論:
- SAタグによるペプチドのlate-stage官能基化は、強力なリガンドを作成するための汎用性の高い戦略です。
- SAタグ付けアプローチは、NEMOのようなタンパク質を標的とするペプチドの親和性を高めます。
- この方法は、NFκBを介した炎症経路を標的とする新しい治療法の開発に有望です。
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