Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 1 de 1
Filter
Add more filters










Database
Language
Publication year range
1.
ACS Nano ; 5(6): 4337-44, 2011 Jun 28.
Article in English | MEDLINE | ID: mdl-21608984

ABSTRACT

We have been investigating the fluorescent property and biocompatibility of novel fluorescent gold nanoclusters (FANC) in human aortic endothelial cells (HAEC) and endothelial progenitor cells (EPC). FANC (50-1000 nmol/L) was delivered into cells via the liposome complex. The fluorescence lasted for at least 28 days with a half-life of 9 days in vitro. Examination of 12 transcripts regulating the essential function of endothelial cells after a 72 h delivery showed that only the vascular cell adhesion molecule 1 and the vascular endothelial cadherin were down-regulated at high concentration (500 nmol/L). In addition, no activation of caspase 3 or proliferating cell nuclear antigens was detected. 3-[4,5-Dimethylthiazol-2-yl]-2,5- diphenyltetrazolium bromide (MTT) assay demonstrated that, unlike the markedly suppressed viability in cells treated with quantum dots, FANC had minimal effect on the viability, unless above 500 nmol/L, at which level a minor reduction of viability mainly caused by liposome was found. Tube formation assay showed no impaired angiogenesis in the EPC treated with FANC. In vivo study using hindlimb ischemic mice with an intramuscular injection of FANC-labeled human EPC showed that the cells preserved an angiogenic potential and exhibited traceable signals after 21 days. These findings demonstrated that FANC is a promising biocompatible fluorescent probe.


Subject(s)
Biomarkers/chemistry , Endothelial Cells/cytology , Gold/chemistry , Metal Nanoparticles/chemistry , Animals , Aorta/cytology , Biocompatible Materials/chemistry , Cell Survival , Endothelial Cells/metabolism , Fluorescent Dyes/pharmacology , Gene Expression Profiling , Humans , In Vitro Techniques , Ischemia/pathology , Mice , Microscopy, Fluorescence/methods , Neovascularization, Physiologic , Quantum Dots , Stem Cells/cytology , Tetrazolium Salts/pharmacology , Thiazoles/pharmacology
SELECTION OF CITATIONS
SEARCH DETAIL
...