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Long-term bone marrow culture as a stem cell source for transplantation
The Journal of Surgical Research
|March 1, 1986
Summary
Bone marrow stem cells can be cultured long-term with feeder layers, but this method does not prevent graft-versus-host disease in allogeneic transplantation. Further modifications are needed for safe allogeneic marrow transplants.
Area of Science:
- Hematology
- Immunology
- Transplantation Biology
Background:
- Bone marrow stem cells are crucial for spleen colony formation in irradiated mice.
- Maintaining these stem cells in liquid culture is essential for research and potential therapeutic applications.
Purpose of the Study:
- To investigate the long-term maintenance of bone marrow stem cells in liquid culture.
- To assess the impact of culture conditions on graft-versus-host disease (GVHD) and transplant tolerance.
Main Methods:
- Utilizing liquid culture with marrow-derived feeder layers for stem cell maintenance.
- Culturing bone marrow cells from different mouse strains.
- Evaluating GVHD occurrence and skin graft tolerance in lethally irradiated recipients.
Main Results:
- Bone marrow stem cells can be maintained in liquid culture for up to 100 days with appropriate feeder layers.
- Not all mouse strains' marrow can be sustained in these cultures.
- Culture duration and in vitro cultivation with allogeneic feeder layers did not alter GVHD incidence.
- Cocultivation did not induce tolerance to skin grafts in syngenic recipients.
Conclusions:
- Long-term marrow cultures are a valuable source of stem cells but require further development.
- Current methods do not mitigate GVHD in allogeneic marrow transplantation.
- Significant modifications are necessary to achieve successful allogeneic marrow transplantation without GVHD.