Dual targeting of the epigenome via FACT complex and histone deacetylase is a potent treatment strategy for DIPG.
Acetylation
Animals
Antineoplastic Agents
/ pharmacology
Brain Stem Neoplasms
/ drug therapy
Carbazoles
/ pharmacology
Cell Cycle Proteins
/ genetics
Cell Line, Tumor
Child
Chromatin
/ chemistry
DNA-Binding Proteins
/ genetics
Diffuse Intrinsic Pontine Glioma
/ drug therapy
Drug Synergism
E2F1 Transcription Factor
/ genetics
Epigenesis, Genetic
Epigenome
High Mobility Group Proteins
/ genetics
Histones
/ antagonists & inhibitors
Humans
Methylation
Mice
Neuroglia
/ drug effects
Panobinostat
/ pharmacology
Primary Cell Culture
Retinoblastoma Protein
/ genetics
Signal Transduction
Survival Analysis
Transcription Factors
/ genetics
Transcriptional Elongation Factors
/ genetics
Tumor Suppressor Protein p53
/ genetics
Xenograft Model Antitumor Assays
DIPG
E2F1
EZH2
H3K27M
HDAC
anticancer therapy
brainstem glioma
facilitates chromatin transcription complex
pediatric cancer
xenograft model
Journal
Cell reports
ISSN: 2211-1247
Titre abrégé: Cell Rep
Pays: United States
ID NLM: 101573691
Informations de publication
Date de publication:
13 04 2021
13 04 2021
Historique:
received:
23
07
2020
revised:
24
12
2020
accepted:
24
03
2021
entrez:
14
4
2021
pubmed:
15
4
2021
medline:
15
2
2022
Statut:
ppublish
Résumé
Diffuse intrinsic pontine glioma (DIPG) is an aggressive and incurable childhood brain tumor for which new treatments are needed. CBL0137 is an anti-cancer compound developed from quinacrine that targets facilitates chromatin transcription (FACT), a chromatin remodeling complex involved in transcription, replication, and DNA repair. We show that CBL0137 displays profound cytotoxic activity against a panel of patient-derived DIPG cultures by restoring tumor suppressor TP53 and Rb activity. Moreover, in an orthotopic model of DIPG, treatment with CBL0137 significantly extends animal survival. The FACT subunit SPT16 is found to directly interact with H3.3K27M, and treatment with CBL0137 restores both histone H3 acetylation and trimethylation. Combined treatment of CBL0137 with the histone deacetylase inhibitor panobinostat leads to inhibition of the Rb/E2F1 pathway and induction of apoptosis. The combination of CBL0137 and panobinostat significantly prolongs the survival of mice bearing DIPG orthografts, suggesting a potential treatment strategy for DIPG.
Identifiants
pubmed: 33852836
pii: S2211-1247(21)00308-9
doi: 10.1016/j.celrep.2021.108994
pii:
doi:
Substances chimiques
Antineoplastic Agents
0
CBLC137
0
Carbazoles
0
Cell Cycle Proteins
0
Chromatin
0
DNA-Binding Proteins
0
E2F1 Transcription Factor
0
E2F1 protein, human
0
High Mobility Group Proteins
0
Histones
0
Retinoblastoma Protein
0
SSRP1 protein, human
0
SUPT16H protein, human
0
TP53 protein, human
0
Transcription Factors
0
Transcriptional Elongation Factors
0
Tumor Suppressor Protein p53
0
Panobinostat
9647FM7Y3Z
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
108994Informations de copyright
Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests K.G. and A.V.G. are co-inventors on patents describing CBL0137. The remaining authors declare no competing interests.