Unknown

Dataset Information

0

Targeted BMI1 inhibition impairs tumor growth in lung adenocarcinomas with low CEBPα expression.


ABSTRACT: Lung cancer is the most common cause of cancer deaths. The expression of the transcription factor C/EBPα (CCAAT/enhancer binding protein α) is frequently lost in non-small cell lung cancer, but the mechanisms by which C/EBPα suppresses tumor formation are not fully understood. In addition, no pharmacological therapy is available to specifically target C/EBPα expression. We discovered a subset of pulmonary adenocarcinoma patients in whom negative/low C/EBPα expression and positive expression of the oncogenic protein BMI1 (B lymphoma Mo-MLV insertion region 1 homolog) have prognostic value. We also generated a lung-specific mouse model of C/EBPα deletion that develops lung adenocarcinomas, which are prevented by Bmi1 haploinsufficiency. BMI1 activity is required for both tumor initiation and maintenance in the C/EBPα-null background, and pharmacological inhibition of BMI1 exhibits antitumor effects in both murine and human adenocarcinoma lines. Overall, we show that C/EBPα is a tumor suppressor in lung cancer and that BMI1 is required for the oncogenic process downstream of C/EBPα loss. Therefore, anti-BMI1 pharmacological inhibition may offer a therapeutic benefit for lung cancer patients with low expression of C/EBPα and high BMI1.

SUBMITTER: Yong KJ 

PROVIDER: S-EPMC8214331 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications

Targeted BMI1 inhibition impairs tumor growth in lung adenocarcinomas with low CEBPα expression.

Yong Kol Jia KJ   Basseres Daniela S DS   Welner Robert S RS   Zhang Wen Cai WC   Yang Henry H   Yan Benedict B   Alberich-Jorda Meritxell M   Zhang Junyan J   de Figueiredo-Pontes Lorena Lobo LL   Battelli Chiara C   Hetherington Christopher J CJ   Ye Min M   Zhang Hong H   Maroni Giorgia G   O'Brien Karen K   Magli Maria Cristina MC   Borczuk Alain C AC   Varticovski Lyuba L   Kocher Olivier O   Zhang Pu P   Moon Young-Choon YC   Sydorenko Nadiya N   Cao Liangxian L   Davis Thomas W TW   Thakkar Bhavin M BM   Soo Ross A RA   Iwama Atsushi A   Lim Bing B   Halmos Balazs B   Neuberg Donna D   Tenen Daniel G DG   Levantini Elena E  

Science translational medicine 20160801 350


Lung cancer is the most common cause of cancer deaths. The expression of the transcription factor C/EBPα (CCAAT/enhancer binding protein α) is frequently lost in non-small cell lung cancer, but the mechanisms by which C/EBPα suppresses tumor formation are not fully understood. In addition, no pharmacological therapy is available to specifically target C/EBPα expression. We discovered a subset of pulmonary adenocarcinoma patients in whom negative/low C/EBPα expression and positive expression of t  ...[more]

Similar Datasets

2015-12-31 | GSE56935 | GEO
| S-EPMC7466013 | biostudies-literature
| S-EPMC6443011 | biostudies-literature
| S-EPMC5697105 | biostudies-literature
| S-EPMC5421865 | biostudies-literature
| S-EPMC4794417 | biostudies-literature
| S-EPMC7349290 | biostudies-literature
| S-EPMC6670241 | biostudies-literature
| S-EPMC8064588 | biostudies-literature
| S-EPMC9495802 | biostudies-literature