alexa CD4(+)CD25(+) immunoregulatory T Cells: new therapeutics for graft-versus-host disease.
Molecular Biology

Molecular Biology

Journal of Cell Science & Therapy

Author(s): Cohen JL, Trenado A, Vasey D, Klatzmann D, Salomon BL

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Abstract CD4(+)CD25(+) immunoregulatory T cells play a pivotal role in preventing organ-specific autoimmune diseases and in tolerance induction to allogeneic organ transplants. We investigated whether these cells could also control graft-versus-host disease (GVHD), the main complication after allogeneic hematopoietic stem cell transplantation (HSCT). Here, we show that the few CD4(+)CD25(+) T cells naturally present in the transplant regulate GVHD because their removal from the graft dramatically accelerates this disease. Furthermore, the addition of freshly isolated CD4(+)CD25(+) T cells at time of grafting significantly delays or even prevents GVHD. Ex vivo-expanded CD4(+)CD25(+) regulatory T cells obtained after stimulation by allogeneic recipient-type antigen-presenting cells can also modulate GVHD. Thus, CD4(+)CD25(+) regulatory T cells represent a new therapeutic tool for controlling GVHD in allogeneic HSCT. More generally, these results outline the tremendous potential of regulatory T cells as therapeutics.
This article was published in J Exp Med and referenced in Journal of Cell Science & Therapy

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