Abstract:
:Dendritic cells (DCs) are considered critical for the induction of graft-versus-host disease (GVHD) after bone marrow transplantation (BMT). In addition to their priming function, dendritic cells have been shown to induce organ-tropism through induction of specific homing molecules on T cells. Using adoptive transfer of CFSE-labeled cells, we first demonstrated that alloreactive T cells differentially up-regulate specific homing molecules in vivo. Host-type dendritic cells from the GVHD target organs liver and spleen or skin- and gut-draining lymph nodes effectively primed naive allogeneic T cells in vitro with the exception of liver-derived dendritic cells, which showed less stimulatory capacity. Gut-derived dendritic cells induced alloreactive donor T cells with a gut-homing phenotype that caused increased GVHD mortality and morbidity compared with T cells stimulated with dendritic cells from spleen, liver, and peripheral lymph nodes in an MHC-mismatched murine BMT model. However, in vivo analysis demonstrated that the in vitro imprinting of homing molecules on alloreactive T cells was only transient. In conclusion, organ-derived dendritic cells can efficiently induce specific homing molecules on alloreactive T cells. A gut-homing phenotype correlates with increased GVHD mortality and morbidity after murine BMT, underlining the importance of the gut in the pathophysiology of GVHD.
journal_name
Bloodjournal_title
Bloodauthors
Kim TD,Terwey TH,Zakrzewski JL,Suh D,Kochman AA,Chen ME,King CG,Borsotti C,Grubin J,Smith OM,Heller G,Liu C,Murphy GF,Alpdogan O,van den Brink MRdoi
10.1182/blood-2007-06-096602subject
Has Abstractpub_date
2008-03-01 00:00:00pages
2929-40issue
5eissn
0006-4971issn
1528-0020pii
blood-2007-06-096602journal_volume
111pub_type
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