PEGylated Phospholipid Micelle-Encapsulated Near-Infrared PbS Quantum Dots for in vitro and in vivo Bioimaging.

PEGylated Phospholipid Micelle-Encapsulated Near-Infrared PbS Quantum Dots for in vitro and in vivo Bioimaging.
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DOI:
10.7150/thno.4275
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发表时间:
2012
期刊:
影响因子:
12.4
通讯作者:
Yong KT
Yong KT
中科院分区:
医学1区
文献类型:
--
作者:
Hu R;Law WC;Lin G;Ye L;Liu J;Liu J;Reynolds JL;Yong KT

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生物共轭量子点在生物医学领域有着广泛的应用前景,其表面改性和功能化研究近年来引起了人们的广泛关注。在这方面的贡献,我们证明了使用聚乙二醇化磷脂胶束封装近红外发射超小硫化铅(PbS)量子点在体外和体内成像。使用MTS测定和组织学分析研究评价胶束包封的QD制剂的细胞毒性。我们已经发现,在用磷脂胶束包封QD后,PbS QD的毒性降低,由此我们设想聚乙二醇化磷脂胶束包封的PbS QD制剂可以用作治疗诊断探针,用于细胞成像和小动物研究中的一些选定应用。
Surface modification and functionalization of bioconjugated quantum dots (QDs) has drawn great attention for the past few years due to their wide applications in biomedical research. In this contribution, we demonstrate the use of PEGylated phospholipid micelles to encapsulate near infrared emitting ultra-small lead sulfide (PbS) QDs for in vitro and in vivo imaging. The cytotoxicity of the micelle-encapsulated QDs formulation was evaluated using MTS assay and histological analysis studies. We have found that upon encapsulating the QDs with phospholipid micelle, the toxicity of the PbS QDs is reduced, from which we envision that the PEGylated phospholipid micelle-encapsulated PbS QDs formulation can be used as theranostics probes for some selected applications in cell imaging and small animals study.
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