Name: implantation of ferumoxides labeled human mesenchymal stem cells in cartilage defects
Uploaded: 2010-04-05T17:00:00
Description: Watch this Scientific Journal Video about Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects at JoVE.com

This work was supported by a grant from the National Institute of Arthritis and Musculoskeletal Skin Diseases, NIH RO1AR054458.

1. Labeling of hMSCs with Endorem
<ol>
<li> Cells are grown to 80% confluence at least 18 hours before labeling.
</li><li> During this time, labeling media is prepared by adding Endorem to the sample at a dose of 100 ug Fe/ml serum-free media.</li><li> After cells are grown to confluence, culture media is aspirated and cells are washed 1x with PBS or serum-free media.
</li><li> Next, the rinse solution is aspirated and the previously prepared labeling media is added. The cells are then incubated at 37&deg;C, 5% CO<...

<ol>
	<li>Mauck, R. L., Yuan, X., Tuan, R. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chondrogenic+differentiation+and+functional+maturation+of+bovine+mesenchymal+stem+cells+in+long-term+agarose+culture.">Chondrogenic differentiation and functional maturation of bovine mesenchymal stem cells in long-term agarose culture.</a> Osteoarthritis Cartilage. 14, 179-189 (2006).</li><li>Pittenger, M. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multilineage+potential+of+adult+human+mesenchymal+stem+cells.">Multilineage potential of adult human mesenchymal stem cells.</a> Science. 284, 143-147 (1999).</li><li>Rahfoth, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transplantation+of+allograft+chondrocytes+embedded+in+agarose+gel+into+cartilage+defects+of+rabbits.">Transplantation of allograft chondrocytes embedded in agarose gel into cartilage defects of rabbits.</a> Osteoarthritis Cartilage. 6, 50-65 (1998).</li><li>Henning, T. D., Boddington, S., Daldrup-Link, H. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Labeling+hESCs+and+hMSCs+with+iron+oxide+nanoparticles+for+non-invasive+in+vivo+tracking+with+MR+imaging.">Labeling hESCs and hMSCs with iron oxide nanoparticles for non-invasive in vivo tracking with MR imaging.</a> J Vis Exp. , (2008).</li></ol>

The described protocol provides a reproducible way to label MSCs with iron oxide nanoparticles and implant these labeled MSCs into cartilage defects. This technique permits non-invasive depiction of stem cell transplants in cartilage defects with MR imaging, which allows an early detection of MASI failure. A dislocation or efflux of the labeled cells can be diagnosed based on a disappearance of the label from the transplantation site on MR images. An early diagnosis of these events is desirable and would prevent the pati...

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		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>D-MEM High Glucose</td>
<td>Reagent</td>
<td>Sigma</td>
<td>D5648</td>
<td>&nbsp;</td>
<tr>
<td>PBS (Ca++, Mg++ free)</td>
<td>&nbsp;</td>
<td>GIBCO</td>
<td>14190-144</td>
<td>&nbsp;</td>
<tr>
<td>Trypsin-EDTA 0.05%</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>25399-120</td>
<td>&nbsp;</td>
<tr>
<td>FBS</td>
<td>&nbsp;</td>
<td>Hyclone</td>
<td>SH30071.03</td>
<td>&nbsp;</td>
<tr>
<td>Penicillin/Streptomycin</td>
<td>&nbsp;</td>
<td>GIBCO</td>
<td>15140-122</td>
<td>&nbsp;</td>
<tr>
<td>Ferumoxides (Endorem)</td>
<td>
</td>
<td>Guerbet</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Agarose Typ VII</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>A9045</td>
<td>Dilute Agarose in PBS to final concentration of 4%</td>
</tr>		</tbody>
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implantation of ferumoxides labeled human mesenchymal stem cells in cartilage defects

The field of tissue engineering integrates the principles of engineering, cell biology and medicine towards the regeneration of specific cells and functional tissue. Matrix associated stem cell implants (MASI) aim to regenerate cartilage defects due to arthritic or traumatic joint injuries. Adult mesenchymal stem cells (MSCs) have the ability to differentiate into cells of the chondrogenic lineage and have shown promising results for cell-based articular cartilage repair technologies. Autologous MSCs can be isolated from a variety of tissues, can be expanded in cell cultures without losing their differentiation potential, and have demonstrated chondrogenic differentiation in vitro and in vivo1, 2.
In order to provide local retention and viability of transplanted MSCs in cartilage defects, a scaffold is needed, which also supports subsequent differentiation and proliferation. The architecture of the scaffold guides tissue formation and permits the extracellular matrix, produced by the stem cells, to expand. Previous investigations have shown that a 2% agarose scaffold may support the development of stable hyaline cartilage and does not induce immune responses3.
Long term retention of transplanted stem cells in MASI is critical for cartilage regeneration. Labeling of MSCs with iron oxide nanoparticles allows for long-term in vivo tracking with non-invasive MR imaging techniques4.
This presentation will demonstrate techniques for labeling MSCs with iron oxide nanoparticles, the generation of cell-agarose constructs and implantation of these constructs into cartilage defects. The labeled constructs can be tracked non-invasively with MR-Imaging.

Watch this Scientific Journal Video about Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects at JoVE.com

Implantation of Ferumoxides Labeled Human Mesenchymal Stem Cells in Cartilage Defects

Goal of the presentation is to demonstrate a highly reproducible method to generate matrix associated stem cell implants in cartilage defects, which can be visualized with MR imaging. Stem cells are labeled with FDA-approved Ferumoxides, mixed with agarose, implanted into cartilage defects and imaged with a 7T MR scanner.

The field of tissue engineering integrates the principles of engineering, cell biology and medicine towards the regeneration of specific cells and ...

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