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Intradermal Cell Transplantation in Soluble Collagen

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Abstract:

Intradermal, as opposed to subcutaneous, cell transplantation was previously shown to be advantageous for tumor cell growth, but this site has not been used for transplantation of normal nonneoplastic cells. In preliminary experiments we found that it was difficult to control the size and shape of transplants when we injected dissociated cells intradermally. This problem was solved by placing cells in nongelled, pepsin-solubilized collagen prior to injection. This technique permitted the successful transplantation of normal bovine adrenocortical cells and of neoplastic cells (3T3 cells secreting FGF) in scid mice. Primary bovine adrenocortical cells formed functional vascularized tissue and the transplants rescued the animals from the lethal effects of adrenalectomy. The histological structure of transplant tissues resembled that previously observed when cells were transplanted in the subrenal capsule space. We also used a line of 3T3 cells that has been genetically modified to secrete a form of acidic FGF. When transplanted intradermally in collagen, they formed rapidly enlarging masses of cells that could easily be palpated beneath the skin of the animal. Intradermal injection of cells in pepsin-solubilized collagen is a simple and reliable technique for transplanting normal primary cells and preneoplastic cells. The ability to grow both types of cells in an easily accessible site allows less invasive monitoring of growth, angiogenesis, and other features of the transplant.

Keywords: Intradermal trans; Key words: Cell transplantation

Document Type: Research Article

DOI: http://dx.doi.org/10.0000/096020198389861

Affiliations: Huffington Center on Aging and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030

Publication date: January 1, 2002

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.
cog/ct/2002/00000011/00000002/ct279
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