Combined inhibition of Aurora-A and ATR kinase results in regression of MYCN-amplified neuroblastoma.
Nat Cancer
; 2(3): 312-326, 2021 03.
Article
em En
| MEDLINE
| ID: mdl-33768209
ABSTRACT
Amplification of MYCN is the driving oncogene in a subset of high-risk neuroblastoma. The MYCN protein and the Aurora-A kinase form a complex during S phase that stabilizes MYCN. Here we show that MYCN activates Aurora-A on chromatin, which phosphorylates histone H3 at serine 10 in S phase, promotes the deposition of histone H3.3 and suppresses R-loop formation. Inhibition of Aurora-A induces transcription-replication conflicts and activates the Ataxia telangiectasia and Rad3 related (ATR) kinase, which limits double-strand break accumulation upon Aurora-A inhibition. Combined inhibition of Aurora-A and ATR induces rampant tumor-specific apoptosis and tumor regression in mouse models of neuroblastoma, leading to permanent eradication in a subset of mice. The therapeutic efficacy is due to both tumor cell-intrinsic and immune cell-mediated mechanisms. We propose that targeting the ability of Aurora-A to resolve transcription-replication conflicts is an effective therapy for MYCN-driven neuroblastoma (141 words).
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Aurora Quinase A
/
Neuroblastoma
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article