Document Detail

Optimization of Magnetic Nanoparticle-Assisted Lentiviral Gene Transfer.
MedLine Citation:
PMID:  22274554     Owner:  NLM     Status:  Publisher    
PURPOSE: Targeting of specific cells and tissues is of great interest for clinical relevant gene- and cell-based therapies. We use magnetic nanoparticles (MNPs) with a ferrimagnetic core (Fe(3)O(4)) with different coatings to optimize MNP-assisted lentiviral gene transfer with focus on different endothelial cell lines. METHODS: Lentiviral vector (LV)/MNP binding was characterized for various MNPs by different methods (e.g. magnetic responsiveness measurement). Transduced cells were analyzed by flow cytometry, fluorescence microscopy and iron recovery. Cell transduction and cell positioning under physiological flow conditions were performed using different in vitro and ex vivo systems. RESULTS: Analysis of diverse MNPs with different coatings resulted in identification of nanoparticles with improved LV association and enhanced transduction properties of complexes in several endothelial cell lines. The magnetic moments of LV/MNP complexes are high enough to achieve local gene targeting of perfused endothelial cells. Perfusion of a mouse aorta with LV/MNP transduced cells under clinically relevant flow conditions led to local cell attachment at the intima of the vessel. CONCLUSION: MNP-guided lentiviral transduction of endothelial cells can be significantly enhanced and localized by using optimized MNPs.
Christina Trueck; Katrin Zimmermann; Olga Mykhaylyk; Martina Anton; Sarah Vosen; Daniela Wenzel; Bernd K Fleischmann; Alexander Pfeifer
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-25
Journal Detail:
Title:  Pharmaceutical research     Volume:  -     ISSN:  1573-904X     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8406521     Medline TA:  Pharm Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Institute of Pharmacology and Toxicology, Biomedical Center, University of Bonn, Sigmund-Freud-Strasse 25, 53105, Bonn, Germany.
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