Abstract

Donor T cell alloreactivity can be co-opted to deliver a graft-versus-tumor (GVT) response following blood or bone marrow transplantation (BMT). However, the major reason for treatment failure following BMT is tumor recurrence, suggesting a long-term failure of GVT immunity. In this study, we have considered the role of non-hematopoietic antigen in determining the fate of donor CD8 cells in a model of delayed DLI to partially MHC-mismatched chimeras, where antigen was either expressed ubiquitously or restricted to the hematopoietic compartment.

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