期刊
LEUKEMIA RESEARCH
卷 36, 期 4, 页码 491-498出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.leukres.2011.10.020
关键词
AML; Histone deacetylase inhibitor; Fludarabine
资金
- National Institutes of Health [CA93738, CA100866, CA130805, CA142509]
- Leukemia and Lymphoma Society of America [R6181-10]
Effects of the HDAC inhibitor LBH-589 (panobinostat) on fludarabine lethality toward acute myeloid leukemia (AML) cells were examined in vitro and in vivo. LBH-589 pretreatment sensitized U937, HL-60, and primary leukemia cells to fludarabine while blocking NF-kappa B activation accompanied by XIAP down-regulation and JNK activation. Pharmacologic or genetic JNK inhibition significantly attenuated LBH-589/fludarabine lethality, whereas XIAP over-expression diminished JNK activation and apoptosis. Combined in vivo treatment abrogated leukemia growth in a U937 xenograft murine model and substantially increased animal survival. These studies highlight the interplay between NF-kappa B activation, XIAP down-regulation, and JNK activation in anti-leukemic synergism between fludarabine and LBH-589. (C) 2011 Elsevier Ltd. All rights reserved.
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