スマートプラズモニックナノバイオセンサを用いたマイクロRNAと論理操作の単分子分析
Ying Zhang1, Zhenhua Shuai1, Hao Zhou1
1Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), College of Electronic and Optical Engineering & College of Microelectronic , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China.
Journal of the American Chemical Society
|March 6, 2018
まとめ
この研究は,マイクロRNA 21 (miR-21) の単一分子検出のための新しいプラズモンのナノバイオセンサを提示します. センサーは超感度でリアルタイムで検出し,DNAベースの論理操作と生物記憶を可能にします.
科学分野:
- ナノテクノロジー
- 生物分子工学
- プラズモニック
背景:
- 単一分子検出は 分子診断,遺伝子プロファイリング,環境モニタリングに不可欠です.
- 既存の方法は 感度やリアルタイム分析に問題があります
研究 の 目的:
- マイクロRNA 21 (miR-21) の単一分子レベル検出のためのスマートなプラズモニックナノバイオセンサを開発する.
- リアルタイム検出,DNAベースのロジック操作,およびバイオメモリアプリケーションのセンサーの能力を実証します.
主な方法:
- テトラヘッド構造DNA (tsDNA) で改造されたコアシェル金銀ナノキューブ (Au@Ag NC) ナノバイオセンサの設計.
- 局所的な表面プラズモン共鳴 (LSPR) のスペクトル波長シフトを利用して検出する.
- 三次元有限差時間領域 (3D-FDTD) シミュレーションを用いた検出メカニズムの検証.
主要な成果:
- 単一のmiR-21ハイブリッド化イベントごとに平均LSPRスペクトルの波長シフトが達成されました.
- 幅広いダイナミックレンジ (1aM〜1nM) でアトモラー (aM) 感度でmiR-21のリアルタイム検出が実証されています.
- miR-21,KpnI,StuI対応アッセイを用いてDNAベースの論理操作と生物記憶機能を成功裏に有効にしました.
結論:
- 開発されたAu@Ag NCナノバイオセンサは,単一分子バイオ分子検出のための新しいプラットフォームを提供します.
- この技術は,高度な診断とデータストレージを含む多様な生物学的および生物医学的なアプリケーションに大きな希望を持っています.
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