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Title 

Musashi RNA-binding protein 2 regulates estrogen receptor 1 function in breast cancer

Authors 

M H KangK J JeongW Y KimH J LeeG GongN SuhB GyorffySeok Ho KimS Y JeongG B MillsY Y Park

Publisher 

Nature Publishing Group

Issue Date 

2017

Citation 

Oncogene

Abstract 

Musashi RNA-binding protein 2 (MSI2) has important roles in human cancer. However, the regulatory mechanisms by which MSI2 alters breast cancer pathophysiology have not been clearly identified. Here we demonstrate that MSI2 directly regulates estrogen receptor 1 (ESR1), which is a well-known therapeutic target and has been shown to reflect clinical outcomes in breast cancer. Based on gene expression data analysis, we found that MSI2 expression was highly enriched in estrogen receptor (ER)-positive breast cancer and that MSI2 expression was significantly correlated with ESR1 expression, including expression of ESR1 downstream target genes. In addition, MSI2 levels were associated with clinical outcomes. MSI2 influenced breast cancer cell growth by altering ESR1 function. MSI2 alters ESR1 by binding specific sites in ESR1 RNA and by increasing ESR1 protein stability. Taken together, our findings identified a novel regulatory mechanism of MSI2 as an upstream regulator of ESR1 and revealed the clinical relevance of the RNA-binding protein MSI2 in breast cancer.

ISSN 

0950-9232

Link 

http://dx.doi.org/10.1038/onc.2016.327

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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