| |
|
|
|
|
|
|
|||
|
Blood, 15 December 2004, Vol. 104, No. 13, pp. 4236-4244. Prepublished online as a Blood First Edition Paper on August 12, 2004August 24, 2004; DOI 10.1182/blood-2004-06-2229.
Submitted June 14, 2004
The CBR Institute for Biomedical Research, Harvard Medical School, Boston, MA, USA * Corresponding author; email: rvanetten{at}tufts-nemc.org.
Donor leukocyte infusions (DLI) can induce graft-versus-leukemia (GvL) reactions in patients with chronic myeloid leukemia (CML) relapsing after allogeneic bone marrow transplantation (BMT), but the mechanisms of the anti-leukemic effect of DLI are unknown, and the procedure is complicated by graft-versus-host disease (GvHD) and graft failure. Here, we adapted a murine retroviral BMT model of Philadelphia+ leukemia by combining allogeneic bone marrow (BM) from C57Bl/6 (H-2b) mice with BCR-ABL-transduced Balb/c (H-2d) BM, inducing mixed chimerism and myeloproliferative disease in recipients resembling relapse of CML following allogeneic BMT. Infusions of allogeneic splenocytes eliminated BCR-ABL-induced CML-like disease in the marjority of mixed chimeras, with significant GvL effects mediated by both CD4+ and CD4- cells. BCR-ABL-induced acute B-lymphoblastic leukemia was also eradicated by DLI in MHC-mismatched chimeras. Most DLI-treated mice converted to full allogeneic chimerism but succumbed frequently to GvHD or graft failure. When MHC-matched B10.D2 (H-2d) mice were the allogeneic donors, CML-like disease was more resistant to DLI. These results suggest that depletion of CD8+ cells from DLI could impair GvL against CML, while increased MHC disparity between donor and recipient may improve the responsiveness of Philadelphia+ B-lymphoblastic leukemia to DLI.
Related Article in Blood Online:
This article has been cited by other articles:
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Copyright © 2004 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||