Abstract
The role of presensitizing murine recipients with donor spleen cells prior to T cell-depleted or -repleted H-2 compatible allogeneic bone marrow transplantation (BMT) was investigated at two different doses of total body irradiation (TBI). Recipients that were presensitized with 2 × 107 irradiated donor spleen cells at 1 week before a sublethal dose of 6 Gy TBI and BMT showed no evidence of donor blood chimerism while unsensitized recipients showed about 80% donor engraftment as determined by blood Gpi phenotyping. After raising the TBI dose to 9.5 Gy an increase in mortality from marrow failure was observed in presensitized animals. No significant engraftment-promoting effect of up to 2 × 106 T cells (20% of total marrow dose) was seen either in presensitized or unsensitized mice. It can be concluded that presensitized recipients are more susceptible to acute marrow rejection and that T cells added to the bone marrow did not influence the level of donor engraftment in these recipients.
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van Os, R., de Witte, T., Dillingh, J. et al. Increased rejection of murine allogeneic bone marrow in presensitized recipients. Leukemia 11, 1045–1048 (1997). https://doi.org/10.1038/sj.leu.2400704
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DOI: https://doi.org/10.1038/sj.leu.2400704