CD8+ T Cells of Tc2 Phenotype Mediate a GVL Effect and Prevent Marrow Rejection

DH Fowler, RE Gress - Vox sanguinis, 1998 - Wiley Online Library
DH Fowler, RE Gress
Vox sanguinis, 1998Wiley Online Library
Donor T cells mediate both beneficial and detrimental immune reactions in the setting of
allogeneic BMT (alloBMT). T cells mediate the GVL effect and prevent marrow rejection, but
also induce GVHD. In an attempt to favorably influence the balance of these allogeneic
responses, we have evaluated the effect of donor CD4+, Thl/Th2 and CD8+, Tcl/Tc2
functional T cell subsets in murine marrow transplantation models. Our studies have
identified the CD8+ Tc2 population (which is a cytolytic effector secreting the type II …
Abstract
Donor T cells mediate both beneficial and detrimental immune reactions in the setting of allogeneic BMT (alloBMT). T cells mediate the GVL effect and prevent marrow rejection, but also induce GVHD. In an attempt to favorably influence the balance of these allogeneic responses, we have evaluated the effect of donor CD4+, Thl/Th2 and CD8+, Tcl/Tc2 functional T cell subsets in murine marrow transplantation models. Our studies have identified the CD8+Tc2 population (which is a cytolytic effector secreting the type II cytokines IL‐4, IL‐5, and IL‐10) as a subset capable of mediating the GVL effect and preventing marrow rejection with reduced GVHD. We have also shown that the Tc2 subset can be generated in humans. These studies indicate that administration of donor CD8+ T cells of Tc2 phenotype represents a strategy for improving alloBMT outcome.
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