Graft-versus-host disease following liver transplantation: Development of a high-incidence rat model and a selective prevention method
from American Journal of Transplantation (login required)
Graft-versus-host disease (GvHD) following liver transplantation (LT) is a rare but serious complication with no presently available animal model and no preventive measures. To develop a rat model of GvHD after LT (LT-GvHD), we preconditioned hosts with sublethal irradiation plus reduction of natural killer (NK) cells with anti-CD8α mAb treatment, which invariably resulted in acute LT-GvHD. Compared with those in the peripheral counterpart, graft CD4+CD25− passenger T cells showed lower alloreactivities in mixed leukocyte culture. Immunohistology revealed that donor CD4+ T cells migrated and formed clusters with host dendritic cells in secondary lymphoid organs, with early expansion and subsequent accumulation in target organs.
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