期刊
ELIFE
卷 3, 期 -, 页码 -出版社
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.03445
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资金
- Howard Hughes Medical Institute
- Leukemia and Lymphoma Society
- National Institute of Health [NIHGMS R012R01EB001987, 1R01GM107671-01]
- Waxman Foundation
Activating mutations in FLT3 confer poor prognosis for individuals with Acute Myeloid Leukemia (AML). Clinically active investigational FLT3 inhibitors can achieve complete remissions, but their utility has been hampered by acquired resistance and myelosuppression attributed to a synthetic lethal toxicity arising from simultaneous inhibition of FLT3 and KIT. We report a novel chemical strategy for selective FLT3 inhibition while avoiding KIT inhibition with the staurosporine analog, Star 27. Star 27 maintains potency against FLT3 in proliferation assays of FLT3-transformed cells compared to KIT-dependent cells, shows no toxicity towards normal human hematopoiesis at concentrations that inhibit primary FLT3-mutant AML blast growth, and is active against mutations that confer resistance to clinical inhibitors. As a more complete understanding of kinase networks emerges it may be possible to define antitargets such as KIT in the case of AML to allow improved kinase inhibitor design of clinical agents with enhanced efficacy and reduced toxicity.
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