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Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Optimal labeling dose, labeling time, and magnetic resonance imaging detection limits of ultrasmall superparamagnetic iron-oxide nanoparticle labeled mesenchymal stromal cells

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Background. Regenerative therapy is an emerging treatment modality. To determine migration and retention of implanted cells, it is crucial to develop noninvasive tracking methods. The aim was to determine ex vivo magnetic resonance imaging (MRI) detection limits of ultrasmall superparamagnetic iron-oxide (USPIO) labeled mesenchymal stromal cells (MSCs). Materials and Methods. 248 gel-phantoms were constructed and scanned on a 1.5T MRI-scanner. Phantoms contained human MSCs preincubated with USPIO nanoparticles for 2, 6, or 21 hours using 5 or 10  μ g USPIO/10(5) MSCs. In addition, porcine hearts were scanned after injection of USPIO labeled MSCs. Results. Using 21 h incubation time and 10  μ g USPIO/10(5) MSCs, labeled cells were clearly separated from unlabeled cells on MRI using 250.000 (P
OriginalsprogEngelsk
TidsskriftStem Cells International
Vol/bind2013
Sider (fra-til)353105
ISSN1687-966X
DOI
StatusUdgivet - 2013

ID: 40127868