Document Detail

Rapid magnetic cell delivery for large tubular bioengineered constructs.
MedLine Citation:
PMID:  22696487     Owner:  NLM     Status:  MEDLINE    
Delivery of cells into tubular tissue constructs with large diameters poses significant spatial and temporal challenges. This study describes preliminary findings for a novel process for rapid and uniform seeding of cells onto the luminal surface of large tubular constructs. Fibroblasts, tagged with superparamagnetic iron oxide nanoparticles (SPION), were directed onto the luminal surface of tubular constructs by a magnetic field generated by a k4-type Halbach cylinder device. The spatial distribution of attached cells, as measured by the mean number of cells, was compared with a conventional, dynamic, rotational cell-delivery technique. Cell loading onto the constructs was measured by microscopy and magnetic resonance imaging. The different seeding techniques employed had a significant effect on the spatial distribution of the cells (p < 0.0001). The number of attached cells at defined positions within the same construct was significantly different for the dynamic rotation technique (p < 0.05). In contrast, no significant differences in the number of cells attached to the luminal surface were found between the defined positions on the construct loaded with the Halbach cylinder. The technique described overcomes limitations associated with existing cell-delivery techniques and is amenable to a variety of tubular organs where rapid loading and uniform distribution of cells for therapeutic applications are required.
J Gonzalez-Molina; J Riegler; P Southern; D Ortega; C C Frangos; Y Angelopoulos; S Husain; M F Lythgoe; Q A Pankhurst; R M Day
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-06-13
Journal Detail:
Title:  Journal of the Royal Society, Interface / the Royal Society     Volume:  9     ISSN:  1742-5662     ISO Abbreviation:  J R Soc Interface     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-09-26     Completed Date:  2013-02-11     Revised Date:  2014-02-20    
Medline Journal Info:
Nlm Unique ID:  101217269     Medline TA:  J R Soc Interface     Country:  England    
Other Details:
Languages:  eng     Pagination:  3008-16     Citation Subset:  IM    
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MeSH Terms
Analysis of Variance
Cell Culture Techniques
Cell Line
Cell Survival
Cell Transplantation / methods*
Ferric Compounds / chemistry,  therapeutic use*
Magnetite Nanoparticles / chemistry,  therapeutic use*
Microscopy, Electron, Transmission
Tissue Engineering / methods*
Grant Support
G0700729//Medical Research Council; //British Heart Foundation; //Department of Health
Reg. No./Substance:
0/Ferric Compounds; 0/Magnetite Nanoparticles; 1309-37-1/ferric oxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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