Abstract
Recent progress in cell therapy research has raised the need for non-invasive monitoring of transplanted cells. Magnetic resonance imaging (MRI) of superparamagnetic iron oxide (SPIO) labeled cells have been widely used for high resolution monitoring of the biodistribution of cells after transplantation. Here we report that self-assembly of amphiphilic polyethylenimine (PEI)/SPIO nanocomposites can lead to the formation of ultrasensitive MRI probes, which can be used to label chondrocyte cells with good biocompatibility. The labeled cells display strong signal contrast compared to unlabeled ones in a clinical MRI scanner. This probe may be useful for noninvasive MR tracking of implanted cells for tissue regeneration.
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Acknowledgment
The work was supported by Program for New Century Excellent Talents in University (NCET-06-0781), Distinguished Young Scholars Project of Sichuan Province (06ZQ026-007), and National Natural Science Foundation of China (20974065, 50603015, and 50830107).
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Gang Liu and Chunchao Xia contributed equally to this work.
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Liu, G., Xia, C., Wang, Z. et al. Magnetic resonance imaging probes for labeling of chondrocyte cells. J Mater Sci: Mater Med 22, 601–606 (2011). https://doi.org/10.1007/s10856-010-4227-x
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DOI: https://doi.org/10.1007/s10856-010-4227-x