JoVE General
Alexander J. Nedopil, Lydia G. Mandrussow, Heike E. Daldrup-Link
Department of Radiology and Biomedical Imaging, Medical Center, University of California San Francisco
Doel van de presentatie is om aan te tonen een zeer reproduceerbare methode om matrix geassocieerd stamcelimplantaten genereren in kraakbeen defecten, die kunnen worden gevisualiseerd met MRI. Stamcellen zijn gelabeld met de FDA-goedgekeurde Ferumoxides, vermengd met agarose, geïmplanteerd in letsels aan het kraakbeen en afgebeeld met een 7T MR-scanner.
Optics Express. Dec, 2009 | Pubmed ID: 20052149
The objective of this work is to establish an optical imaging technique that would enable monitoring of the integration of mesenchymal stem cells (MSC) in arthritic joints. Our approach is based on first developing a labeling technique of MSC with the fluorescent dye DiD followed by tracking the cell migration kinetics from the spatial distribution of the DiD fluorescence in optical images (OI). The experimental approach involves first the in vitro OI of MSC labeled with DiD accompanied by fluorescence microscopy measurements to establish localization of the signal within the cells. Thereafter, DiD-labeled MSC were injected into polyarthritic, athymic rats and the signal localization within the experimental animals was monitored over several days. The experimental results indicate that DiD integrated into the cell membrane. DiD-labeled MSC localization in the arthritic ankle joints was observed with OI indicating that this method can be applied to monitor MSC in arthritic joints.
Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging. Feb, 2011 | Pubmed ID: 20379785
This study aims to determine the effect of human mesenchymal stem cell (hMSC) labeling with the fluorescent dye DiD and the iron oxide nanoparticle ferucarbotran on chondrogenesis.