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Transplantation of Murine Bone Marrow Stromal Cells Under the Kidney Capsule to Secrete Coagulation Factor VIII

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Ectopic cell transplantation has been studied as an alternative to whole organ transplantation or as a method to produce secretable proteins for genetic disorders. In this study, bone marrow stromal cells isolated from C57Bl/6 mice were genetically modified to express either lacZ- or B-domain-deleted human factor VIII. In vitro modification of the isolated bone marrow stromal cells was initially performed by transducing increased doses of VSV-G pseudotyped lentiviral vectors expressing lacZ. At a MOI of 25, all of the bone marrow stromal cells were X-gal positive, which maintained their ability to expand and differentiate prior to transplantation into mice. Extremely poor engraftment was observed in the liver, but transplantation of the bone marrow stromal cells expressing lacZ under the kidney capsule resulted in long-term viable X-gal-positive cells for at least 8 weeks (length of study). In vitro expression of human factor VIII was detected in a dose-dependent manner following bone marrow stromal cell with a factor VIII-expressing lentiviral vector. Transplantation of the factor VIII-expressing bone marrow stromal cells under the kidney capsule led to long-term therapeutic expression in the mouse plasma (1–3 ng/ml; n = 4–5 mice/group) for 8 weeks. This study demonstrated that ectopic transplantation of bone marrow stromal cells under the kidney capsule can be effective as a method to express secretable proteins in vivo.

Keywords: Bone marrow stromal cells; Ectopic transplantation; Human factor VIII; Kidney capsule; Lentiviral vectors

Document Type: Research Article


Affiliations: 1: Department of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA 2: Department of Biochemistry, Tulane University, New Orleans, LA, USA 3: First Department of Surgery, Nara Medical University, Nara, Japan

Publication date: 2006-07-01

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  • 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.
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