ホールメソポラスシリカナノ粒子で安定したJ-アグリゲートによるショートウェーブ赤外線画像
Wei Chen, Chi-An Cheng, Emily D Cosco1
1Helmholtz Pioneer Campus, Helmholtz Zentrum München , D-85764 Neuherberg , Germany.
Journal of the American Chemical Society
|July 30, 2019
まとめ
短波赤外線画像 (SWIR) のための新しいナノ材料を開発した. これらのJ-アグレガートナノ粒子は,現在のコントラスト剤の限界を克服して,高解像度の in vivo 画像処理を可能にします.
科学分野:
- バイオメディカル光学
- 材料科学
- ナノテクノロジー
背景:
- 短波赤外線 (SWIR) への組織透明性により,このスペクトルでは光学画像が有利です.
- SWIR光学画像の現在の限界は,1000 nm以上を放射する明るい,生物互換性のあるコントラスト剤の不足によるものです.
研究 の 目的:
- 強化されたSWIR光学イメージングのための新しいナノマテリアルを開発する.
- J-聚合を用いた近赤外線 (NIR) の光体から赤色移転したSWIRコントラスト剤を作成する.
主な方法:
- NIRフローロフォールIR-140のJ集積を空洞のメソポラスシリカナノ粒子 (HMSN) の内部で製造する.
- J-アグレガートを封じ込んでいるHMSNのPEGylation.
- バッファのナノマテリアルの安定性の評価
- 980nm刺激を用いた in vivo 画像検査
主要な成果:
- HMSN内にIR-140 J-アグレガートを封じ込めることでSWIR光を吸収し放出するナノマテリアルを成功裏に合成した.
- PEGYlated HMSNは,J-アグレガットを含有し,バッファー状態で数週間の安定性を示した.
- 開発されたナノマテリアルは980nmの刺激で高解像度インビボ画像を撮影した.
結論:
- HMSN内のJ集積は,赤色シフト SWIRコントラスト剤を作成するための効果的な戦略です.
- 開発されたPEGylated HMSNベースのナノマテリアルは安定しており,高解像度 in vivo SWIRイメージングに適しています.
- これらの発見は,SWIR光学的イメージングの有用性を拡大するために,高度なコントラスト剤の必要性に対応しています.
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