Abstract
The expression of the transcription factor SOX4 is increased in many human cancers, however, the pro-oncogenic capacity of SOX4 can vary greatly depending on the type of tumor. Both the contextual nature and the mechanisms underlying the pro-oncogenic SOX4 response remain unexplored. Here, we demonstrate that in mammary tumorigenesis, the SOX4 transcriptional network is dictated by the epigenome and is enriched for pro-angiogenic processes. We show that SOX4 directly regulates endothelin-1 (ET-1) expression and can thereby promote tumor-induced angiogenesis both in vitro and in vivo. Furthermore, in breast tumors, SOX4 expression correlates with blood vessel density and size, and predicts poor-prognosis in patients with breast cancer. Our data provide novel mechanistic insights into context-dependent SOX4 target gene selection, and uncover a novel pro-oncogenic role for this transcription factor in promoting tumor-induced angiogenesis. These findings establish a key role for SOX4 in promoting metastasis through exploiting diverse pro-tumorigenic pathways.
Original language | English |
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Journal | eLife |
Volume | 7 |
DOIs | |
Publication status | Published - 3 Dec 2018 |
Bibliographical note
© 2018, Vervoort et al.Keywords
- Animals
- Breast Neoplasms/blood supply
- Chromatin/metabolism
- Culture Media, Conditioned/pharmacology
- Endothelin-1/metabolism
- Epigenesis, Genetic
- Epithelial Cells/drug effects
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Regulatory Networks
- HEK293 Cells
- Humans
- Neoplasm Metastasis
- Neovascularization, Pathologic/genetics
- Promoter Regions, Genetic/genetics
- RNA, Messenger/genetics
- SOXC Transcription Factors/genetics
- Survival Analysis
- Trans-Activators/metabolism
- Transcription, Genetic
- Xenograft Model Antitumor Assays
- Zebrafish