期刊
SMALL
卷 5, 期 6, 页码 718-726出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.200801303
关键词
hybrid materials; quantum dots; self-assembly; simian virus 40; virus tracing
类别
资金
- National Nano Project [2006CB933100]
- Chinese Academy of Sciences [kjcx2-sw-h12]
- National Natural Science Foundation of China [90606028, 20621502]
Unique spectral properties of quantum dots (QDs) enable ultrasensitive and long-term biolabeling. Aiming to trace the infection, movement, and localization of viruses in living cells, QD-containing virus-like particles (VLPs) of simian virus 40 (SV40), termed SVLP-QDs, are constructed by in vitro self-assembly of the major capsid protein of SV40. SVLP-QDs show homogeneity in size (approximate to 24 nm), similarity in spectral properties to unencapsidated QDs, and considerable stability. When incubated with living cells, SVLP-QDs are shown to enter the cells by caveolar endocytosis, travel along the microtubules, and accumulate in the endoplasmic reticulum. This process mimics the early infection steps of SV40. This is the first paradigm of imaging viral behaviors with encapsidated QDs in living cells. The method may provide a new alternative for various purposes, such as tracing viruses or viral components, targeted nanoparticle delivery, and probing of drug delivery.
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