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PMID: 24220271 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Recurrent mutations, including NPM1c, activate a BRD4-dependent core transcriptional program in acute myeloid leukemia.

Leukemia ·Vol. 28 ·No. 2 ·2014-02-00 ·Pages 311-20

Dawson MA, Gudgin EJ, Horton SJ, Giotopoulos G, Meduri E, Robson S, Cannizzaro E, Osaki H, Wiese M, Putwain S, Fong CY, Grove C, Craig J, Dittmann A, Lugo D, Jeffrey P, Drewes G, Lee K, Bullinger L, Prinjha RK, Kouzarides T, Vassiliou GS, Huntly BJ

Abstract

Recent evidence suggests that inhibition of bromodomain and extra-terminal (BET) epigenetic readers may have clinical utility against acute myeloid leukemia (AML). Here we validate this hypothesis, demonstrating the efficacy of the BET inhibitor I-BET151 across a variety of AML subtypes driven by disparate mutations. We demonstrate that a common 'core' transcriptional program, which is HOX gene independent, is downregulated in AML and underlies sensitivity to I-BET treatment. This program is enriched for genes that contain 'super-enhancers', recently described regulatory elements postulated to control key oncogenic driver genes. Moreover, our program can independently classify AML patients into distinct cytogenetic and molecular subgroups, suggesting that it contains biomarkers of sensitivity and response. We focus AML with mutations of the Nucleophosmin gene (NPM1) and show evidence to suggest that wild-type NPM1 has an inhibitory influence on BRD4 that is relieved upon NPM1c mutation and cytosplasmic dislocation. This leads to the upregulation of the core transcriptional program facilitating leukemia development. This program is abrogated by I-BET therapy and by nuclear restoration of NPM1. Finally, we demonstrate the efficacy of I-BET151 in a unique murine model and in primary patient samples of NPM1c AML. Taken together, our data support the use of BET inhibitors in clinical trials in AML.

MeSH Terms
Animals Benzodiazepines/administration & dosage,pharmacology Cell Cycle Proteins Cell Line, Tumor Disease Models, Animal Drug Evaluation, Preclinical Gene Expression Profiling Gene Expression Regulation, Leukemic/drug effects Humans Leukemia, Myeloid, Acute/drug therapy,genetics,metabolism,mortality Mice Nuclear Proteins/genetics,metabolism Nucleophosmin Transcription Factors/metabolism Transcription, Genetic Transcriptional Activation Xenograft Model Antitumor Assays
Chemicals
BRD4 protein, human Cell Cycle Proteins NPM1 protein, human Npm1 protein, mouse Nuclear Proteins Transcription Factors Nucleophosmin Benzodiazepines molibresib
Authors & Affiliations
23 authors, click to expand affiliations / ORCID
Dawson M A
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK [3] Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Gudgin E J
Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK.
Horton S J
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
Giotopoulos G
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
Meduri E
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
Robson S
Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Cannizzaro E
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Osaki H
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
Wiese M
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Putwain S
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
Fong C Y
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Grove C
Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Hinxton, UK.
Craig J
Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK.
Dittmann A
Discovery Research, Cellzome AG, Heidelberg, Germany.
Lugo D
Epinova DPU, Immuno-Inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Medicines Research Centre, Stevenage, UK.
Jeffrey P
Epinova DPU, Immuno-Inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Medicines Research Centre, Stevenage, UK.
Drewes G
Discovery Research, Cellzome AG, Heidelberg, Germany.
Lee K
Epinova DPU, Immuno-Inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Medicines Research Centre, Stevenage, UK.
Bullinger L
Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany.
Prinjha R K
Epinova DPU, Immuno-Inflammation Centre of Excellence for Drug Discovery, GlaxoSmithKline, Medicines Research Centre, Stevenage, UK.
Kouzarides T
Gurdon Institute and Department of Pathology, University of Cambridge, Cambridge UK.
Vassiliou G S
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Hinxton, UK.
Huntly B J P
1] Department of Haematology, Cambridge Institute for Medical Research and Addenbrookes Hospital, University of Cambridge, Cambridge, UK [2] Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Cambridge, UK.
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Article Info
Journal
Leukemia
Abbr.
Leukemia
ISSN
1476-5551
Published
2014-02-00
Epub
2013-00-13
Pages
311-20
Language
English
Region
England
NLM ID
8704895
PMCID
PMC3918873
Subset
IM
Grants
Worldwide Cancer Research · 14-1069 · United Kingdom
Wellcome Trust · 079249 · United Kingdom
Wellcome Trust · 092096 · United Kingdom
Cancer Research UK · 10827 · United Kingdom
Wellcome Trust · 095663 · United Kingdom
Wellcome Trust · 100140 · United Kingdom
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