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1.
Nature ; 593(7860): 597-601, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33902106

RESUMO

N6-methyladenosine (m6A) is an abundant internal RNA modification1,2 that is catalysed predominantly by the METTL3-METTL14 methyltransferase complex3,4. The m6A methyltransferase METTL3 has been linked to the initiation and maintenance of acute myeloid leukaemia (AML), but the potential of therapeutic applications targeting this enzyme remains unknown5-7. Here we present the identification and characterization of STM2457, a highly potent and selective first-in-class catalytic inhibitor of METTL3, and a crystal structure of STM2457 in complex with METTL3-METTL14. Treatment of tumours with STM2457 leads to reduced AML growth and an increase in differentiation and apoptosis. These cellular effects are accompanied by selective reduction of m6A levels on known leukaemogenic mRNAs and a decrease in their expression consistent with a translational defect. We demonstrate that pharmacological inhibition of METTL3 in vivo leads to impaired engraftment and prolonged survival in various mouse models of AML, specifically targeting key stem cell subpopulations of AML. Collectively, these results reveal the inhibition of METTL3 as a potential therapeutic strategy against AML, and provide proof of concept that the targeting of RNA-modifying enzymes represents a promising avenue for anticancer therapy.

2.
J Med Chem ; 60(13): 5663-5672, 2017 07 13.
Artigo em Inglês | MEDLINE | ID: mdl-28594552

RESUMO

Herein we describe the identification of 4-{[1,2,4]triazolo[1,5-a]pyridin-5-yl}benzonitrile-based inhibitors of the hypoxia-inducible factor prolylhydroxylase domain-1 (PHD-1) enzyme. These inhibitors were shown to possess a novel binding mode by X-ray crystallography, in which the triazolo N1 atom coordinates in a hitherto unreported monodentate interaction with the active site Fe2+ ion, while the benzonitrile group accepts a hydrogen-bonding interaction from the side chain residue of Asn315. Further optimization led to potent PHD-1 inhibitors with good physicochemical and pharmacokinetic properties.


Assuntos
Inibidores Enzimáticos/química , Inibidores Enzimáticos/farmacologia , Prolina Dioxigenases do Fator Induzível por Hipóxia/antagonistas & inibidores , Piridinas/química , Piridinas/farmacologia , Triazóis/química , Triazóis/farmacologia , Animais , Cristalografia por Raios X , Cães , Inibidores Enzimáticos/farmacocinética , Humanos , Prolina Dioxigenases do Fator Induzível por Hipóxia/química , Prolina Dioxigenases do Fator Induzível por Hipóxia/metabolismo , Células Madin Darby de Rim Canino , Camundongos , Camundongos Endogâmicos C57BL , Simulação de Acoplamento Molecular , Piridinas/farmacocinética , Triazóis/farmacocinética
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