Metabolic Regulation of the Epigenome Drives Lethal Infantile Ependymoma.
cancer metabolism
ependymoma
epigenetics
hindbrain development
microenvironment
paediatric cancer
Journal
Cell
ISSN: 1097-4172
Titre abrégé: Cell
Pays: United States
ID NLM: 0413066
Informations de publication
Date de publication:
11 06 2020
11 06 2020
Historique:
received:
27
09
2019
revised:
16
03
2020
accepted:
24
04
2020
pubmed:
24
5
2020
medline:
5
1
2021
entrez:
24
5
2020
Statut:
ppublish
Résumé
Posterior fossa A (PFA) ependymomas are lethal malignancies of the hindbrain in infants and toddlers. Lacking highly recurrent somatic mutations, PFA ependymomas are proposed to be epigenetically driven tumors for which model systems are lacking. Here we demonstrate that PFA ependymomas are maintained under hypoxia, associated with restricted availability of specific metabolites to diminish histone methylation, and increase histone demethylation and acetylation at histone 3 lysine 27 (H3K27). PFA ependymomas initiate from a cell lineage in the first trimester of human development that resides in restricted oxygen. Unlike other ependymomas, transient exposure of PFA cells to ambient oxygen induces irreversible cellular toxicity. PFA tumors exhibit a low basal level of H3K27me3, and, paradoxically, inhibition of H3K27 methylation specifically disrupts PFA tumor growth. Targeting metabolism and/or the epigenome presents a unique opportunity for rational therapy for infants with PFA ependymoma.
Identifiants
pubmed: 32445698
pii: S0092-8674(20)30553-5
doi: 10.1016/j.cell.2020.04.047
pii:
doi:
Substances chimiques
Histones
0
Lysine
K3Z4F929H6
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1329-1345.e24Subventions
Organisme : NCI NIH HHS
ID : R01 CA148699
Pays : United States
Organisme : NCI NIH HHS
ID : R01 CA159859
Pays : United States
Commentaires et corrections
Type : CommentIn
Type : CommentIn
Informations de copyright
Copyright © 2020 Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Interests The authors declare no competing interests.