Targeted multimodal theranostics via biorecognition controlled aggregation of metallic nanoparticle composites.
Targeted multimodal theranostics via biorecognition controlled aggregation of metallic nanoparticle composites.
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通过生物识别控制金属纳米粒子复合材料聚集的靶向多模式治疗诊断
DOI:
10.1039/c6sc01463a
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发表时间:
2016-07-01
期刊:
影响因子:
8.4
通讯作者:
Tian H
中科院分区:
文献类型:
--
作者:
Hu XL;Zang Y;Li J;Chen GR;James TD;He XP;Tian H
We show that two distinct mechanisms, FRET and MEF, of metallic nanoparticles can be finely tuned by a ligand–receptor interaction, producing a nanocomposite with an enhanced ROS production for targeted imaging and multimodal therapy. We have developed a theranostic nanocomposite of metallic nanoparticles that uses two distinct fluorescence mechanisms: Förster Resonance Energy Transfer (FRET) and Metal-Enhanced Fluorescence (MEF) controlled by ligand–receptor interaction. Supramolecular assembly of the fluorophore-labeled glycoligands to cyclodextrin-capped gold nanoparticles produces a nanocomposite with a quenched fluorescence due to FRET from the fluorophore to the proximal particle. Subsequently, interaction with a selective protein receptor leads to an aggregation of the composite, reactivating the fluorescence by MEF from the distal metallic particles to fluorophores encapsulated in the aggregates. The aggregation also causes a red-shift in absorbance of the composite, thereby enhancing the production of reactive oxygen species (ROS) on red-light irradiation. Our nanocomposite has proven suitable for targeted cancer cell imaging as well as multimode therapy using both the photodynamic and drug delivery properties of the composite.
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影响因子:
16.6
作者:
Li, Da-Wei;Qu, Lu-Lu;Tian, He
通讯作者:
Tian, He
影响因子:
3.6
作者:
Tornoe, CW;Christensen, C;Meldal, M
通讯作者:
Meldal, M
影响因子:
41.2
作者:
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影响因子:
7
作者:
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通讯作者:
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影响因子:
38.3
作者:
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通讯作者:
Haick, Hossam