プロリン媒介による,タンパク質結合体の発見のための,二硫化物豊富なペプチドの進化能力の向上
Hongtan Liu1, Lulu Song2,3, Xiaoting Meng4,5
1The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Journal of the American Chemical Society
|July 2, 2025
まとめ
硫化物豊富なペプチド (DRP) の進化性を高めるプロリンスキャン戦略を開発し,安全性プロファイルが向上したTROP2と4-1BBを標的とした強力な治療薬の発見を可能にしました.
科学分野:
- 生化学と分子生物学
- 薬の発見と開発
- タンパク質工学
背景:
- ディスルファイドに富んだペプチド (DRP),特に阻害性システィンノット (ICK) モチーフは,治療開発の安定性と特異性を提供します.
- DRPの構造的な可塑性は,新しい機能を設計することを妨げ,薬の発見にボトルネックをもたらします.
研究 の 目的:
- 新しいプロリンスキャニング戦略を開発し,ICKスキャフォールドの進化性を向上させる.
- 図書館の構築のために,折り畳みやすさとシーケンスの許容性を改善したDRPのバリエーションを設計する.
- 癌の標的に対する治療的可能性を持つ新しいDRPを特定し,特徴づけること.
主な方法:
- プロリンスキャニング戦略を導入し ICKの脚すを設計した.
- mRNAとファージ表示プラットフォームを使用して多様なペプチドライブラリを構築しました.
- DRPベースのCAR T細胞療法を含む,進化したDRPの構造的特徴と治療の可能性を評価した.
主要な成果:
- 配列の変異に対する折りたたみと耐性を強化したICK変種.
- TROP2と4 - 1BBに対する低ナノモラ afinityを持つDRPを特定した.
- DRPベースのCAR T細胞療法を開発し,scFvベースのCAR T細胞と比較して比較可能な効能と安全性を示しました.
結論:
- プロリンスキャニング戦略は,以前の制限を克服して,DRPの進化性を大幅に高めます.
- 進化したDRPは独特の構造,高酸化折りたたみ,治療的可能性を示しています.
- この枠組みは,幅広い治療用途のための多様なDRPの発見を容易にする.
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