PEGylated phospholipid micelle-encapsulated near-infrared PbS quantum dots for in vitro and in vivo bioimaging

Rui Hu, Wing Cheung Law, Guimiao Lin, Ling Ye, Jianwei Liu, Jing Liu, Jessica L. Reynolds, Ken Tye Yong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

60 Citations (Scopus)


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 phospho-lipid 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.
Original languageEnglish
Pages (from-to)723-733
Number of pages11
Issue number7
Publication statusPublished - 14 Sep 2012
Externally publishedYes


  • Bioimaging
  • Micelle encapsulation
  • Peg
  • Phospholipid
  • Quantum dots

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Pharmacology, Toxicology and Pharmaceutics (miscellaneous)

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