Oncogenic hijacking of a developmental transcription factor evokes vulnerability toward oxidative stress in Ewing sarcoma.
Adult
Animals
Bone Neoplasms
/ pathology
Cell Line, Tumor
Cell Proliferation
Child
Chondrocytes
/ metabolism
DNA Methylation
Enhancer Elements, Genetic
Gene Expression Profiling
Gene Expression Regulation, Neoplastic
HEK293 Cells
Humans
Hydrazines
/ chemistry
Mesenchymal Stem Cells
/ metabolism
Mice
Microsatellite Repeats
Mitochondria
/ metabolism
Oligonucleotide Array Sequence Analysis
Oncogene Proteins, Fusion
/ metabolism
Oncogenes
Oxidative Stress
RNA Interference
SOXD Transcription Factors
/ metabolism
Sarcoma
/ genetics
Sarcoma, Ewing
/ pathology
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
15 05 2020
15 05 2020
Historique:
received:
21
03
2019
accepted:
23
04
2020
entrez:
17
5
2020
pubmed:
18
5
2020
medline:
25
8
2020
Statut:
epublish
Résumé
Ewing sarcoma (EwS) is an aggressive childhood cancer likely originating from mesenchymal stem cells or osteo-chondrogenic progenitors. It is characterized by fusion oncoproteins involving EWSR1 and variable members of the ETS-family of transcription factors (in 85% FLI1). EWSR1-FLI1 can induce target genes by using GGAA-microsatellites as enhancers.Here, we show that EWSR1-FLI1 hijacks the developmental transcription factor SOX6 - a physiological driver of proliferation of osteo-chondrogenic progenitors - by binding to an intronic GGAA-microsatellite, which promotes EwS growth in vitro and in vivo. Through integration of transcriptome-profiling, published drug-screening data, and functional in vitro and in vivo experiments including 3D and PDX models, we discover that constitutively high SOX6 expression promotes elevated levels of oxidative stress that create a therapeutic vulnerability toward the oxidative stress-inducing drug Elesclomol.Collectively, our results exemplify how aberrant activation of a developmental transcription factor by a dominant oncogene can promote malignancy, but provide opportunities for targeted therapy.
Identifiants
pubmed: 32415069
doi: 10.1038/s41467-020-16244-2
pii: 10.1038/s41467-020-16244-2
pmc: PMC7228971
doi:
Substances chimiques
EWSR1-FLI1 fusion protein, human
0
Hydrazines
0
Oncogene Proteins, Fusion
0
SOX6 protein, human
0
SOXD Transcription Factors
0
elesclomol
6UK191M53P
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
2423Subventions
Organisme : NCI NIH HHS
ID : F31 CA236410
Pays : United States
Commentaires et corrections
Type : ErratumIn
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