Prolongation of cardiac allograft survival by systemic administration of immature recipient dendritic cells deficient in NF-kappaB activity.
OBJECTIVE
To develop a more applicable approach that uses recipient-derived dendritic cells (DC) for organ transplantation.


BACKGROUND
Systemic administration of immature donor DC that are deficient in costimulatory molecules delays the onset of allograft rejection. However, this approach requires in vitro DC propagation and would not be applicable to deceased donor organ transplantation.


METHODS
DC were propagated from C3H (H2) mouse bone marrow with GM-CSF; their maturation was arrested by treatment with oligodeoxyribonucleotides (ODN) specifically against nuclear factor (NF)-kappaB. The DC were pulsed with B10 (H2) splenocyte lysate. DC phenotype was examined by flow cytometry. Their allostimulatory activity was assessed in vitro by MLR and CTL assays and in vivo by the influence on B10 cardiac allograft survival. Cytokine profiles were analyzed by ELISA and RNase protection assay. NF-kappaB activity in DC nuclear protein was detected by gel shifting assay.


RESULTS
Compared with mature DC, NF-kappaB ODN-treated immature DC pulsed with B10 (H2) spleen cell lysate elicited markedly lower proliferative responses and correlated with reduced IFN-gamma and increased IL-10 production. In contrast to administration of mature C3H DC pulsed with B10 antigen that accelerated rejection of B10 cardiac allografts, a single injection of NF-kappaB ODN DC pulsed with donor antigens significantly prolonged allograft survival in an antigen-specific manner. This was associated with induction of T-cell hyporesponsiveness and enhanced T-cell apoptosis.


CONCLUSIONS
An approach to use recipient DC as a "vaccine" strategy provides a more feasible approach for deceased-donor organ transplantation.
Tiao
Mao-Meng
MM
Thomas E. Starzl Transplantation Institute and Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA.
Lu
Lina
L
Tao
Ran
R
Wang
Lianfu
L
Fung
John J
JJ
Qian
Shiguang
S
D000818:Animals; D002455:Cell Division; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis; D004247:DNA / Q000378:metabolism; D003713:Dendritic Cells / Q000378:metabolism / Q000637:transplantation*; D006082:Graft Enhancement, Immunologic; D006085:Graft Survival; D016027:Heart Transplantation; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D016328:NF-kappa B / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D009838:Oligodeoxyribonucleotides / Q000494:pharmacology; D013601:T-Lymphocytes / Q000276:immunology / Q000378:metabolism
D016207:Cytokines; D016328:NF-kappa B; D009838:Oligodeoxyribonucleotides; D004247:DNA
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