The cell fate determination factor DACH1 is expressed in estrogen receptor-α-positive breast cancer and represses estrogen receptor-α signaling

Vladimir M. Popov, Jie Zhou, L. Andrew Shirley, Judy Quong, Wen Shuz Yeow, Jennifer A. Wright, Kongming Wu, Hallgeir Rui, Ratna K Vadlamudi, Jie Jiang, Rakesh Kumar, Chenguang Wang, Richard G. Pestell

Research output: Contribution to journalArticle

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Abstract

The Dachshund (dac) gene, initially cloned as a dominant inhibitor of the Drosophila hyperactive EGFR mutant ellipse, encodes a key component of the cell fate determination pathway involved in Drosophila eye development. Analysis of more than 2,200 breast cancer samples showed improved survival by some 40 months in patients whose tumors expressed DACH1. Herein, DACH1 and estrogen receptor-α (ERα) expressions were inversely correlated in human breast cancer. DACH1 bound and inhibited ERα function. Nuclear DACH1 expression inhibited estradiol (E2)-induced DNA synthesis and cellular proliferation. DACH1 bound ERα in immunoprecipitation-Western blotting, associated with ERα in chromatin immunoprecipitation, and inhibited ERα transcriptional activity, requiring a conserved DS domain. Proteomic analysis identified proline, glutamic acid, and leucine rich protein 1 (PELP1) as a DACH1-binding protein. The DACH1 COOH terminus was required for binding to PELP1. DACH1 inhibited induction of ERA signaling. E2 recruited ERα and disengaged corepressors from DACH1 at an endogenous ER response element, allowing PELP1 to serve as an ERα coactivator. DACH1 expression, which is lost in poor prognosis human breast cancer, functions as an endogenous inhibitor of ERα function.

Original languageEnglish (US)
Pages (from-to)5752-5760
Number of pages9
JournalCancer Research
Volume69
Issue number14
DOIs
StatePublished - Jul 15 2009

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Estrogen Receptors
Breast Neoplasms
Drosophila
Co-Repressor Proteins
Chromatin Immunoprecipitation
Response Elements
Cellular Structures
Immunoprecipitation
Proteomics
Estradiol
Carrier Proteins
Western Blotting
Cell Proliferation
Survival
DNA
Genes

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

The cell fate determination factor DACH1 is expressed in estrogen receptor-α-positive breast cancer and represses estrogen receptor-α signaling. / Popov, Vladimir M.; Zhou, Jie; Shirley, L. Andrew; Quong, Judy; Yeow, Wen Shuz; Wright, Jennifer A.; Wu, Kongming; Rui, Hallgeir; Vadlamudi, Ratna K; Jiang, Jie; Kumar, Rakesh; Wang, Chenguang; Pestell, Richard G.

In: Cancer Research, Vol. 69, No. 14, 15.07.2009, p. 5752-5760.

Research output: Contribution to journalArticle

Popov, VM, Zhou, J, Shirley, LA, Quong, J, Yeow, WS, Wright, JA, Wu, K, Rui, H, Vadlamudi, RK, Jiang, J, Kumar, R, Wang, C & Pestell, RG 2009, 'The cell fate determination factor DACH1 is expressed in estrogen receptor-α-positive breast cancer and represses estrogen receptor-α signaling', Cancer Research, vol. 69, no. 14, pp. 5752-5760. https://doi.org/10.1158/0008-5472.CAN-08-3992
Popov, Vladimir M. ; Zhou, Jie ; Shirley, L. Andrew ; Quong, Judy ; Yeow, Wen Shuz ; Wright, Jennifer A. ; Wu, Kongming ; Rui, Hallgeir ; Vadlamudi, Ratna K ; Jiang, Jie ; Kumar, Rakesh ; Wang, Chenguang ; Pestell, Richard G. / The cell fate determination factor DACH1 is expressed in estrogen receptor-α-positive breast cancer and represses estrogen receptor-α signaling. In: Cancer Research. 2009 ; Vol. 69, No. 14. pp. 5752-5760.
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