Relationship between ETS Transcription Factor ETV1 and TGF-β-regulated SMAD Proteins in Prostate Cancer

Sangphil Oh, Sook Shin, Hoogeun Song, Joseph Peter Grande, Ralf Janknecht

Research output: Contribution to journalArticle

Abstract

The ETS transcription factor ETV1 is frequently overexpressed in aggressive prostate cancer, which is one underlying cause of this disease. Accordingly, transgenic mice that prostate-specifically overexpress ETV1 develop prostatic intraepithelial neoplasia. However, progression to the adenocarcinoma stage is stifled in these mice, suggesting that inhibitory pathways possibly preclude ETV1 from exerting its full oncogenic potential. Here we provide evidence that TGF-β/SMAD signaling represents such an inhibitory pathway. First, we discovered that ETV1 forms complexes with SMAD4. Second, SMAD2, SMAD3 and SMAD4 overexpression impaired ETV1’s ability to stimulate gene transcription. Third, TGF-β1 inhibited ETV1-induced invasion by benign RWPE-1 prostate cells. Fourth, increased expression of SMAD3 and SMAD4 was observable in prostates of ETV1 transgenic mice. Conversely, we found that ETV1 may enhance TGF-β signaling in PC3 prostate cancer cells, revealing a different facet of the ETV1/TGF-β interplay. Altogether, these data provide more insights into the regulation and action of ETV1 and additionally suggest that TGF-β/SMAD signaling exerts its tumor suppressive activity, at least in part, by curtailing the oncogenic potential of ETV1 in prostatic lesions.

Original languageEnglish (US)
Article number8186
JournalScientific reports
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2019

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Prostate
Prostatic Neoplasms
Transcription Factors
Transgenic Mice
Prostatic Intraepithelial Neoplasia
Proteins
Adenocarcinoma
Genes
Neoplasms

ASJC Scopus subject areas

  • General

Cite this

Relationship between ETS Transcription Factor ETV1 and TGF-β-regulated SMAD Proteins in Prostate Cancer. / Oh, Sangphil; Shin, Sook; Song, Hoogeun; Grande, Joseph Peter; Janknecht, Ralf.

In: Scientific reports, Vol. 9, No. 1, 8186, 01.12.2019.

Research output: Contribution to journalArticle

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