Abstract:
:The present work is a continuation of our studies to improve the graft versus leukemia (GVL) effect in autologous bone marrow transplantation. We have recently shown that the GVL effect of bone marrow transplantation (BMT) with interleukin 2 (IL-2)-activated bone marrow (ABM) followed by IL-2 therapy immediately after BMT is superior to the GVL effect of BMT with fresh, syngeneic bone marrow, with or without IL-2 therapy, in mice with acute myeloid leukemia. The present studies show that institution of IL-2 treatment 1, 2, or 3 weeks after BMT with ABM resulted in shortening of survival and fall in cure rate as compared to IL-2 therapy instituted immediately after BMT with ABM. Increasing the dose of IL-2 did not improve results. However, reducing the frequency of IL-2 administration to once a day instead of twice a day affected the results adversely. Commencing IL-2 therapy 1, 2, or 3 weeks after BMT with fresh, syngeneic bone marrow did not improve the GVL effect as compared to IL-2 therapy started immediately after BMT with fresh, syngeneic bone marrow. Cryopreserved bone marrow was effectively activated with IL-2 and used successfully for BMT after thawing. The animals cured of leukemia by BMT with ABM and and IL-2 therapy were not resistant to leukemia and died when reinfused with leukemic cells. Our findings suggest that for optimum GVL effect, activation of bone marrow is necessary and IL-2 therapy should be started immediately after BMT with ABM.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Charak BS,Brynes RK,Katsuda S,Groshen S,Chen SC,Mazumder Asubject
Has Abstractpub_date
1991-04-15 00:00:00pages
2015-20issue
8eissn
0008-5472issn
1538-7445journal_volume
51pub_type
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