Article (Scientific journals)
Failure of donor lymphocyte infusion to prevent graft rejection in dogs given DLA-identical marrow after I Gy of total body irradiation
Baron, Frédéric; Sandmaier, B. M.; Zellmer, E. et al.
2006In Biology of Blood and Marrow Transplantation, 12 (8), p. 813-817
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Keywords :
hematopoietic cell transplantation; donor lymphocyte infusion; pentostatin; chimerism; nonmyeloablative; dog
Abstract :
[en] We investigated in a preclinical canine model of hematopoietic cell transplantation (HCT) whether preemptive donor lymphocyte infusion (DLI) given 1 month after HCT could prevent late graft rejection that was the rule in historical dogs given suboptimal conditioning with 1 Gy of total body irradiation (TBI) before and immunosuppression with cyclosporine (CSP) and either mycophenolate mofetil (MMF; n = 6) or rapamycin (n = 5) after dog leukocyte antigen (DLA)-identical marrow transplantation. Nine dogs given DLA-identical marrow after I Gy of TBI followed by postgrafting MMF and CSP were studied. A single DLI was given 28-36 days after HCT, either with (n = 5) or without (n = 4) preceding treatment with the immunosuppressive drug pentostatin. Two of the 4 dogs given DLI only maintained stable mixed donor-host chimera beyond 30 weeks after HCT, whereas 2 rejected their grafts, on weeks 10 and 15 after HCT. One of the 5 dogs given pentostatin before DLI maintained a stable mixed donor-host chimera beyond 30 weeks, whereas 4 rejected their grafts, at weeks 8, 12, 12, and 16 after HCT. The 30-week probability of stable mixed chimerism, was 33% among dogs given DLI, versus 0% among 11 historical dogs (P = .003). In conclusion, DLI was only moderately effective in preventing graft rejection in this model. Additional immunosuppression with pentostatin did not improve that outcome. The model might be useful in developing potential strategies aimed at preventing graft rejection in patients with low donor chimerism, levels. (C) 2006 American Society for Blood and Marrow Transplantation.
Disciplines :
Immunology & infectious disease
Surgery
Hematology
Author, co-author :
Baron, Frédéric  ;  Université de Liège - ULiège > Département des sciences cliniques > Hématologie
Sandmaier, B. M.
Zellmer, E.
Sorror, M.
Storer, B.
Storb, R.
Language :
English
Title :
Failure of donor lymphocyte infusion to prevent graft rejection in dogs given DLA-identical marrow after I Gy of total body irradiation
Publication date :
August 2006
Journal title :
Biology of Blood and Marrow Transplantation
ISSN :
1083-8791
eISSN :
1523-6536
Publisher :
Elsevier Science Inc, New York, United States - New York
Volume :
12
Issue :
8
Pages :
813-817
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 November 2011

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