Multifunctional nanoparticles as coupled contrast agents.

Multifunctional nanoparticles as coupled contrast agents.
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多功能纳米颗粒作为耦合对比剂。

DOI:
10.1038/ncomms1042
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发表时间:
2010-07-27
影响因子:
16.6
通讯作者:
Gao, Xiaohu
Gao, Xiaohu
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Jin, Yongdong;Jia, Congxian;Huang, Sheng-Wen;O'Donnell, Matthew;Gao, Xiaohu

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具有高度集成模式的工程紧凑成像探针是生物纳米技术的关键焦点,并将对分子诊断,成像和治疗产生深远影响。然而,在纳米尺度上组合多个组件以创建单个组件不可用的新成像模式已被证明具有挑战性。在这里,我们展示了氧化铁和金偶联的核壳纳米颗粒,其具有明确的结构特征(例如,尺寸、壳厚度和核-壳分离)和物理性质(例如,电子的、磁的、光的、热的和声的)。由此产生的多功能纳米探针不仅为电子显微镜、磁共振成像和基于散射的成像提供对比度,而且更重要的是,实现了一种新的成像模式,磁动光声(mmPA)成像,与使用常规纳米颗粒造影剂的PA图像相比,具有显着的对比度增强。
Engineering compact imaging probes with highly integrated modalities is a key focus in bionanotechnology and will have profound impact on molecular diagnostics, imaging, and therapeutics. However, combining multiple components on a nanometer scale to create new imaging modalities unavailable from individual components has proven challenging. Here, we demonstrate iron oxide and gold coupled core-shell nanoparticles with well defined structural characteristics (e.g., size, shell thickness, and core-shell separation) and physical properties (e.g., electronic, magnetic, optical, thermal, and acoustic). The resulting multifunctional nanoprobes not only offer contrast for electron microscopy, magnetic resonance imaging, and scattering-based imaging, but more importantly, enable a new imaging mode, magnetomotive photoacoustic (mmPA) imaging, with remarkable contrast enhancement compared to PA images using conventional nanoparticle contrast agents.
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发表时间: 2003-10-01
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影响因子: 10.8
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