C/EBPß regulates the JAK/STAT signaling pathway in triple-negative breast cancer.
FEBS Open Bio
; 11(4): 1250-1258, 2021 04.
Article
em En
| MEDLINE
| ID: mdl-33660927
ABSTRACT
C/EBPß is a member of the CCAAT/enhancer-binding protein (C/EBP) family, which consists of a number of b-ZIP transcription factors. Although C/EBPß has been implicated in the development of certain cancers, including breast cancer, it remains unknown whether dysregulation of C/EBPß in breast cancer is subtype-specific. Moreover, the underlying mechanisms by which C/EBPß regulates breast cancer carcinogenesis are not fully understood. Here, we present evidence that C/EBPß is specifically overexpressed in human TNBC samples, but not in non-TNBC samples. C/EBPß depletion dramatically suppressed TNBC cell growth, migration, invasion, and colony formation ability. A subsequent mechanistic study revealed that the JAK/STAT signaling pathway was upregulated in C/EBPß_high TNBC samples compared with C/EBPß_low TNBC samples. C/EBPß ChIP-seq and qPCR were performed to demonstrate that C/EBPß directly binds to and regulates JAK/STAT signaling pathway genes in TNBC. Taken together, our data indicate the oncogenic role of C/EBPß in human TNBC and reveal a novel mechanism by which C/EBPß promotes TNBC carcinogenesis.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transdução de Sinais
/
Proteína beta Intensificadora de Ligação a CCAAT
/
Fatores de Transcrição STAT
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Janus Quinases
/
Neoplasias de Mama Triplo Negativas
Tipo de estudo:
Etiology_studies
Limite:
Female
/
Humans
Idioma:
En
Revista:
FEBS Open Bio
Ano de publicação:
2021
Tipo de documento:
Article