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Open Access In Vivo Growing of New Cell Colonies in a Portion of Bone Marrow: Potential Use for Indirect Cell Therapy

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The ability of bone marrow cells (BMCs) to migrate to different organs can be used for indirect cell therapy, a procedure based on the engraftment of therapeutic cells in a different place from where they will finally move to and perform their action and which could be particularly useful for chronic illness where a persistent and long-lasting therapeutic action is required. Thus, establishing a stable colony of engineered BMCs is a requisite for the chronic provision of damaged tissues with engineered cells. Reported here is a procedure for creating such a cell colony in a portion of the bone marrow (BM). The study was performed in C57BL/6j mice and consisted of developing a focal niche in a portion of the bone marrow with focal irradiation so that it could be selectively colonized by BM cells (C57BL/6-FG-VC-GFP mice) injected in the blood stream. Both the arrival of cells coming from the nonirradiated BM (week 1 after irradiation) and the proliferation of cells in the irradiated BM (week 2) prevented the homing of injected cells in the BM niche. However, when BMCs were injected in a time window about 48 h after irradiation they migrated to the BM niche where they established a cell colony able to: 1) survive for a long period of time [the percentage of injected cells increased in the BM from day 30 postinjection (15%) to day 110 postinjection 28%)]; 2) express cell differentiation markers (90% of them were lineage committed 4 weeks after engraftment); and 3) colonize to the blood stream (with 5% and 9% of all blood cells being computed 1 and 3 months after engraftment, respectively). The intravenous injection of BMCs in combination with a previous transitory focal myeloablation is a safe and easy method for creating the long-lasting colony of modified BMCs needed for treating chronic and progressive illness with indirect cell therapy.

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Keywords: Bone marrow; Cell transplantation; GFP; Myeloablation; Parkinson's disease; Stem cells

Document Type: Research Article

Publication date: 2010-02-01

More about this publication?
  • The importance of translating original, peer-reviewed research and review articles on the subject of cell therapy and its application to human diseases to society has led to the formation of the journal Cell Medicine. To ensure high-quality contributions from all areas of transplantation, the same rigorous peer review will be applied to articles published in Cell Medicine. Articles may 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, and stem cells, among others. Basic clinical studies and immunological research papers may also be featured if they have a translational interest. To provide complete coverage of this revolutionary field, Cell Medicine will report on relevant technological advances and their potential for translational medicine. Cell Medicine will be a purely online Open Access journal. There will therefore be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow your work to be disseminated to a wider audience and also entitle you to a free PDF, as well as prepublication of an unedited version of your manuscript.

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

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