Published in:
01-09-2006 | Review
Regulatory T cells in graft-versus-host disease
Authors:
Benoît L. Salomon, Muriel Sudres, José L. Cohen
Published in:
Seminars in Immunopathology
|
Issue 1/2006
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Abstract
Alloreactive T cells present in a bone marrow transplant are responsible for graft-vs-host disease, but their depletion is associated with impaired engraftment, immunosuppression, and loss of the graft-vs-leukemia effect. The subpopulation of CD4+CD25+ immunoregulatory T cells was first identified based on its crucial role in the control of autoimmune processes, but they also play a role in alloreactive responses. Moreover, these cells could be used to develop innovative strategies in the field of transplantation and particularly to prevent graft-vs-host disease. Indeed, high numbers of CD4+CD25+ immunoregulatory T cells can modulate graft-vs-host disease if administered at the same time as allogeneic hematopoietic stem cell transplantation in mice. This review discusses various important issues regarding the possible use of CD4+CD25+ immunoregulatory T cells to modulate alloreactivity in hematopoietic stem cell transplantation.