Abstract
While the multiple endocrine neoplasia type 1 (MEN1) gene functions as a tumor suppressor in a variety of cancer types, we explored its oncogenic role in breast tumorigenesis. The MEN1 gene product menin is involved in H3K4 trimethylation and co-activates transcription. We integrated ChIP-seq and RNA-seq data to identify menin target genes. Our analysis revealed that menin-dependent target gene promoters display looping to distal enhancers that are bound by menin, FOXA1 and GATA3. In this fashion, MEN1 co-regulates a proliferative breast cancer-specific gene expression program in ER+ cells. In primary mammary cells, MEN1 exerts an anti-proliferative function by regulating a distinct expression signature. Our findings clarify the cell-type-specific functions of MEN1 and inform the development of menin-directed treatments for breast cancer.
Original language | English |
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Pages (from-to) | 2359-2372 |
Number of pages | 14 |
Journal | Cell Reports |
Volume | 18 |
Issue number | 10 |
DOIs | |
Publication status | Published - 07 Mar 2017 |
Keywords
- Breast Neoplasms
- Cell Line, Tumor
- Cell Proliferation
- Enhancer Elements, Genetic
- Estradiol
- Estrogen Receptor alpha
- Female
- GATA3 Transcription Factor
- Gene Expression Regulation, Neoplastic
- Genomics
- Hepatocyte Nuclear Factor 3-alpha
- Histones
- Humans
- Lysine
- Methylation
- Oncogenes
- Promoter Regions, Genetic
- Protein Binding
- Proto-Oncogene Proteins
- Transcription, Genetic
- Journal Article