Abstract
FTO, an mRNA N6-methyladenosine (m6A) demethylase, was reported to promote leukemogenesis. Using structure-based rational design, we have developed two promising FTO inhibitors, namely FB23 and FB23-2, which directly bind to FTO and selectively inhibit FTO's m6A demethylase activity. Mimicking FTO depletion, FB23-2 dramatically suppresses proliferation and promotes the differentiation/apoptosis of human acute myeloid leukemia (AML) cell line cells and primary blast AML cells in vitro. Moreover, FB23-2 significantly inhibits the progression of human AML cell lines and primary cells in xeno-transplanted mice. Collectively, our data suggest that FTO is a druggable target and that targeting FTO by small-molecule inhibitors holds potential to treat AML.
Keywords:
FTO inhibitor; RNA epitranscriptomics; acute myeloid leukemia; cancer therapy; structure-based design; target validation.
Copyright © 2019 Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Alpha-Ketoglutarate-Dependent Dioxygenase FTO / antagonists & inhibitors*
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Alpha-Ketoglutarate-Dependent Dioxygenase FTO / chemistry
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Alpha-Ketoglutarate-Dependent Dioxygenase FTO / genetics
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Alpha-Ketoglutarate-Dependent Dioxygenase FTO / metabolism
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Animals
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Antineoplastic Agents / chemistry
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Antineoplastic Agents / pharmacokinetics
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Antineoplastic Agents / pharmacology*
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Apoptosis / drug effects
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Cell Cycle Checkpoints / drug effects
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Cell Differentiation / drug effects
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Cell Proliferation / drug effects
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Dose-Response Relationship, Drug
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Enzyme Inhibitors / chemistry
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Enzyme Inhibitors / pharmacokinetics
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Enzyme Inhibitors / pharmacology*
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Humans
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Leukemia, Myeloid, Acute / drug therapy*
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Leukemia, Myeloid, Acute / enzymology
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Leukemia, Myeloid, Acute / genetics
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Leukemia, Myeloid, Acute / pathology
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Methylation
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Mice, Inbred BALB C
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Mice, Inbred NOD
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Mice, Transgenic
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Molecular Targeted Therapy
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Protein Conformation
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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Rats, Sprague-Dawley
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Signal Transduction
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Structure-Activity Relationship
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U937 Cells
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Xenograft Model Antitumor Assays
Substances
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Antineoplastic Agents
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Enzyme Inhibitors
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RNA, Messenger
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Alpha-Ketoglutarate-Dependent Dioxygenase FTO
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FTO protein, human