期刊
EXPERIMENTAL HEMATOLOGY
卷 70, 期 -, 页码 55-69出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.exphem.2018.10.010
关键词
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资金
- Israeli Cancer Association
- Sapon Foundation
- REUT (the Association for Advancement in Medicine in Israel)
Despite a high remission rate after therapy, only 40-50% of acute myeloid leukemia (AML) patients survive 5 years after diagnosis. The main cause of treatment failure is thought to be insufficient eradication of CD34(+)CD38(-) AML cells. In order to induce preferential cell death in CD34(+)CD38(-) AML cells, two separate events may be necessary: (1) inhibition of survival signals such as nuclear factor kappa-beta (NF-kappa B) and (2) induction of stress responses such as the oxidative stress response. Therefore, regimens that mediate both effects may be favorable. Deferasirox is a rationally designed oral iron chelator mainly used to reduce chronic iron overload in patients who receive long-term blood transfusions. Our study revealed that clinically relevant concentrations of deferasirox are cytotoxic in vitro to AML progenitor cells, but even more potent against the more primitive CD34(+)CD38(-) cell population. In addition, we found that deferasirox exerts its effect, at least in part, by inhibiting the NF-kappa B/hypoxia-induced factor 1-alpha (HIF1 alpha) pathway and by elevating reactive oxygen species levels. We believe that, pending further characterization, deferasirox can be considered as a potential therapeutic agent for eradicating CD34(+)CD38(-) AML cells. (C) 2018 ISEH - Society for Hematology and Stem Cells. Published by Elsevier Inc. All rights reserved.
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