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Molecular and Cellular Biology, January 2004, p. 306-319, Vol. 24, No. 1
0270-7306/04/$08.00+0     DOI: 10.1128/MCB.24.1.306-319.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Snail Mediates E-Cadherin Repression by the Recruitment of the Sin3A/Histone Deacetylase 1 (HDAC1)/HDAC2 Complex

Hector Peinado,1 Esteban Ballestar,2 Manel Esteller,2 and Amparo Cano1*

Departamento de Bioquimica, Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid,1 Cancer Epigenetics Laboratory, Molecular Pathology Programme, Spanish National Cancer Centre, Madrid, Spain2

Received 30 May 2003/ Returned for modification 30 July 2003/ Accepted 30 September 2003

The transcription factor Snail has been described as a direct repressor of E-cadherin expression during development and carcinogenesis; however, the specific mechanisms involved in this process remain largely unknown. Here we show that mammalian Snail requires histone deacetylase (HDAC) activity to repress E-cadherin promoter and that treatment with trichostatin A (TSA) is sufficient to block the repressor effect of Snail. Moreover, overexpression of Snail is correlated with deacetylation of histones H3 and H4 at the E-cadherin promoter, and TSA treatment in Snail-expressing cells reverses the acetylation status of histones. Additionally, we demonstrate that Snail interacts in vivo with the E-cadherin promoter and recruits HDAC activity. Most importantly, we demonstrate an interaction between Snail, histone deacetylase 1 (HDAC1) and HDAC2, and the corepressor mSin3A. This interaction is dependent on the SNAG domain of Snail, indicating that the Snail transcription factor mediates the repression by recruitment of chromatin-modifying activities, forming a multimolecular complex to repress E-cadherin expression. Our results establish a direct causal relationship between Snail-dependent repression of E-cadherin and the modification of chromatin at its promoter.

* Corresponding author. Mailing address: Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Arturo Duperier 4, 28029 Madrid, Spain. Phone. 34-91-585-4411. Fax: 34-91-585-4401. E-mail: acano{at}iib.uam.es.

Molecular and Cellular Biology, January 2004, p. 306-319, Vol. 24, No. 1
0022-538X/04/$08.00+0     DOI: 10.1128/MCB.24.1.306-319.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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