論理演算可能なタンパク質による標的型薬物送達技術(Programmable proteins use logic to improve targeted drug delivery)

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2025-10-09 ワシントン大学 (UW)

ワシントン大学の研究チームは、複数の生体指標を“論理的”に認識して薬剤を狙った部位へ送達できるプログラム可能タンパク質を開発した。治療用タンパク質に環境応答性の「スマートテール」を付加し、特定の酵素やpHなどの組み合わせ条件下でのみ構造が変化して薬剤を放出する。これにより、複数のバイオマーカーに基づくAND/OR論理回路を構築し、疾患部位選択性を飛躍的に向上させた。さらに、合成生物学技術でDNA設計から生産までを自動化し、数日で高精度タンパク質を大量合成可能にした。今後はがんや炎症性疾患などで副作用を抑えた精密薬物送達に応用が期待される。成果は『Nature Chemical Biology』誌に掲載。

論理演算可能なタンパク質による標的型薬物送達技術(Programmable proteins use logic to improve targeted drug delivery)
Therapies that are sensitive to multiple biomarkers could allow medicines to reach only the areas of the body where they are needed. The diagram above shows three theoretical biomarkers that are present in specific, sometimes overlapping areas of the body. A therapy designed to find the unique area of overlap between the three will act on only that area.DeForest et al./Nature Chemical Biology

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自律的にコンパイルされた分子トポロジーによるブール論理ゲート型タンパク質プレゼンテーション Boolean logic-gated protein presentation through autonomously compiled molecular topology

Ryan Gharios,Murial L. Ross,Annabella Li,Shivani P. Kottantharayil,Jack Hoye & Cole A. DeForest
Nature Chemical Biology  Published:09 October 2025
DOI:https://doi.org/10.1038/s41589-025-02037-5

Abstract

Stimulus-responsive materials have enabled advanced applications in biosensing, tissue engineering and therapeutic delivery. Although controlled molecular topology has been demonstrated as an effective route toward creating materials that respond to prespecified input combinations, prior efforts suffer from a reliance on complicated and low-yielding multistep organic syntheses that dramatically limit their utility. Harnessing the power of recombinant expression, we integrate emerging chemical biology tools to create topologically specified protein cargos that can be site-specifically tethered to and conditionally released from biomaterials following user-programmable Boolean logic. Critically, construct topology is autonomously compiled during expression through spontaneous intramolecular ligations, enabling direct and scalable synthesis of advanced operators. Using this framework, we specify protein release from biomaterials following all 17 possible YES/OR/AND logic outputs from input combinations of three orthogonal protease actuators, multiplexed delivery of three distinct biomacromolecules from hydrogels, five-input-based conditional cargo liberation and logically defined protein localization on or within living mammalian cells.

生物化学工学
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