Bioconjugated pluronic triblock-copolymer micelle-encapsulated quantum dots for targeted imaging of cancer: in vitro and in vivo studies.
Early in this study, CdTe/ZnS core/shell quantum dots (QDs) were encapsulated in carboxylated Pluronic F127 triblock polymeric micelle, to preserve the optical and colloidal stability of QDs in biological fluids. Folic acid (FA) was then conjugated to the surface of QDs for the targeted delivery of the QD formulation to the tumor site, by exploiting the overexpressed FA receptors (FARs) on the tumor cells. Cytotoxicity study demonstrated that the QD formulation has negligible in vitro toxicity. The in vitro study showed that the bioconjugated micelle-encapsulated QDs, but not the unconjugated QDs, were able to efficiently label Panc-1 cancer cells. In vivo imaging study showed that bioconjugated QDs were able to target tumor site after intravenous injection of the formulation in tumor-bearing mice.
1. School of Science, Changchun University of Science and Technology, Changchun 130022, Jilin, China.
Liwei
L
Liu
Ken-Tye
KT
Yong
Indrajit
I
Roy
Wing-Cheung
WC
Law
Ling
L
Ye
Jianwei
J
Liu
Jing
J
Liu
Rajiv
R
Kumar
Xihe
X
Zhang
Paras N
PN
Prasad