Mesenchymal stem cells administered after liver transplantation prevent acute graft-versus-host disease in rats

Liver Transplantation : Official Publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society
Xuefeng XiaTingbo Liang

Abstract

Acute graft-versus-host disease is a serious and life-threatening complication of liver transplantation (LT) that occurs in 1% to 2% of liver allograft recipients. It is associated with a high mortality rate, and effective therapies are lacking. In our established rat model, a relative decrease in regulatory T cells (Tregs) was previously shown to be associated with acute graft-versus-host disease after liver transplantation (LT-aGVHD). Mesenchymal stem cells (MSCs) have been used to treat graft-versus-host disease after allogeneic hematopoietic stem cell transplantation, and they have been shown to induce Tregs, which have immunomodulatory effects. In this study, when a treatment with donor- or recipient-derived MSCs was administered from day 8 to day 14 after the typical symptoms of LT-aGVHD started, the recipients were not cured, and their survival time was not prolonged. However, when MSCs of different origins were administered from day 0 to day 6 after LT, the recipients survived significantly longer than the control group, and the surviving MSC-treated rats did not show typical LT-aGVHD symptoms. In vivo tracings of carboxyfluorescein diacetate succinimidyl ester-stained MSCs did not show significant accumulations in the ...Continue Reading

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