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Updated: Jan 30, 2026

Nanosensors to Detect Protease Activity In Vivo for Noninvasive Diagnostics

Nanosensors to Detect Protease Activity In Vivo for Noninvasive Diagnostics

Published on: July 16, 2018

定量的に腫瘍関連プロテアゼの活動を視覚化するために,ラチオメトリック光音学プローブを使用する

Ling Yin^1,2, Hao Sun³, Hao Zhang⁴

¹Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , Suzhou 215123 , P. R. China.

Journal of the American Chemical Society

|January 29, 2019

まとめ

この研究では,がんにおけるマトリックス金属タンパク質酵素-2 (MMP- 2) の活性を検出するための活性化可能な探知器を開発した. この探査機は,光と光響の方法を使用して,腫瘍タンパク質の定量的で非侵襲的なイメージングを可能にします.

科学分野:

生物医学工学
分子イメージング
癌生物学

背景:

異常なプロテアゼ発現は癌の進行と転移に不可欠です.
腫瘍の診断と治療のモニタリングには,非侵襲的なプロテアース活性評価が不可欠です.

研究の目的:

マトリックスメタルプロテインゼ-2 (MMP-2) の活性 in vivo の検出のための活性化可能なプローブを開発する.
癌の診断と治療評価のための腫瘍関連プロテアズの定量的なイメージングを可能にします.

主な方法:

近赤外線染料 (Cy5.5) とMMP-2ペプチド基板で結合されたクエンチャー (QSY21) を使用してプローブを構成した.
光と光学画像 (PA) を使って,MMP- 2の活性を in vitro と in vivo で検出した.
乳がんモデルの定量的なMMP-2検出のための比率的なPAアプローチを使用した.

主要な成果:

探査機はMMP-2濃度に依存する光と吸収の変化を示した.
光とPAイメージングの両方を用いてMMP- 2の in vitro検出が成功していることが実証されました.
乳がんにおけるMMP-2発現の定量的インビボ検出は,比率的なPA画像を用いて達成された.

結論:

開発された活性化可能な探査機は,腫瘍に関連したタンパク質を研究するための新しいツールを提供します.
このアプローチは,がんにおけるMMP-2の非侵襲的な定量評価を容易にする.
この探査機は癌の診断と治療のモニタリングを進める可能性を秘めています

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