Abstract:
:Graft-versus-host disease (GVHD) is a major complication of allogeneic bone marrow transplantation (BMT). When GVHD is controlled by T-cell-depleted grafts or immunosuppressants, BM transplant recipients often suffer from an increased rate of leukemic relapse and impaired reconstitution of immunity. Using a mouse BMT model, we investigated the effects of hepatocyte growth factor (HGF) gene transfection on the severity of GVHD, the graft-versus-leukemia effect, and the reconstitution of T cells after BMT. After HGF gene transfer, acute GVHD was reduced, while mature donor T-cell responses to host antigens were preserved, resulting in a significant improvement of leukemia-free survival. HGF gene transfer promoted regeneration of bone marrow-derived T cells and the responsiveness of these cells to alloantigens. Furthermore, HGF preserved the thymocyte phenotype and thymic stromal architecture in mice with GVHD. This suggested that HGF exerts a potent protective effect on the thymus, which in turn promotes reconstitution of bone marrow-derived T cells after allogeneic BMT. These results indicate that HGF gene transfection can reduce acute GVHD preserving the graft-versus-leukemia effect, while promoting thymic-dependent T-cell reconstitution after allogeneic BMT.
journal_name
Bloodjournal_title
Bloodauthors
Imado T,Iwasaki T,Kataoka Y,Kuroiwa T,Hara H,Fujimoto J,Sano Hdoi
10.1182/blood-2003-12-4309subject
Has Abstractpub_date
2004-09-01 00:00:00pages
1542-9issue
5eissn
0006-4971issn
1528-0020pii
2003-12-4309journal_volume
104pub_type
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