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Myoblast Xenotransplantation as a Tool to Evaluate the Appropriateness of Nanoparticular Versus Cellular Trackers

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Myoblast transplantation is being considered as a potential strategy to improve muscle function in myopathies; hence, it is important to identify the transplanted cells and to have available efficient reagents to track these cells. We first validated a human to mouse xenotransplantation model warranting the complete and rapid rejection of the cells. We then used this model to assess the appropriateness of a nanoparticle reagent to track the transplanted cells. Human myoblasts were loaded with ferrite nanoparticles and injected into the tibialis muscle of immunocompetent mice. Upon collection and histological analysis of muscle sections at different time points, we observed the total disappearance of the human cells within 6 days while ferrite particles remained detectable and colocalized with mouse infiltrating and neighboring cells at the injection site. These results suggest that the use of exogenous markers such as ferrite nanoparticles may lead to false-positive results and misinterpretation of cell fate.
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Keywords: COX2; Ferrites; Human myoblasts; Macrophages; Xenotransplantation

Document Type: Research Article

Publication date: 2008-09-01

More about this publication?
  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

    Cell Transplantation is now being published by SAGE. Please visit their website for the most recent issues.

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