Abstract
Mesenchymal stem cell (MSC) therapy has emerged as a potential therapeutic option for several diseases due to their unique properties of releasing important bioactive factors. Despite the advances in stem cell therapy, it is still difficult to accurately determine the mechanisms of cell activities after in vivo transplantation. The application of noninvasive cell tracking approaches is important to determine tissue distribution and the lifetime of stem cells following their injection, which consequently provides knowledge about the mechanisms of stem cell tissue repair. Superparamagnetic iron oxide nanoparticles (SPION)can provide a very useful tool for labeling and tracking stem cells by magnetic resonance imaging without causing toxic cellular effects and do not elicit any other side effects. Here we describe how to use SPIONs to label mesenchymal stem cells and evaluate efficacy and potential cytotoxicity in vitro.
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