Interaction with Suv39H1 is critical for Snail-mediated E-cadherin repression in breast cancer. Oncogene 2013 Mar 14;32(11):1351-62
Date
05/09/2012Pubmed ID
22562246Pubmed Central ID
PMC3703513DOI
10.1038/onc.2012.169Scopus ID
2-s2.0-84875220237 (requires institutional sign-in at Scopus site) 181 CitationsAbstract
Expression of E-cadherin, a hallmark of epithelial-mesenchymal transition (EMT), is often lost due to promoter DNA methylation in basal-like breast cancer (BLBC), which contributes to the metastatic advantage of this disease; however, the underlying mechanism remains unclear. Here, we identified that Snail interacted with Suv39H1 (suppressor of variegation 3-9 homolog 1), a major methyltransferase responsible for H3K9me3 that intimately links to DNA methylation. We demonstrated that the SNAG domain of Snail and the SET domain of Suv39H1 were required for their mutual interactions. We found that H3K9me3 and DNA methylation on the E-cadherin promoter were higher in BLBC cell lines. We showed that Snail interacted with Suv39H1 and recruited it to the E-cadherin promoter for transcriptional repression. Knockdown of Suv39H1 restored E-cadherin expression by blocking H3K9me3 and DNA methylation and resulted in the inhibition of cell migration, invasion and metastasis of BLBC. Our study not only reveals a critical mechanism underlying the epigenetic regulation of EMT, but also paves a way for the development of new treatment strategies against this disease.
Author List
Dong C, Wu Y, Wang Y, Wang C, Kang T, Rychahou PG, Chi YI, Evers BM, Zhou BPAuthor
Young-In Chi PhD Assistant Professor in the Surgery department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Amino Acid SequenceBreast Neoplasms
Cadherins
Carcinoma
Cells, Cultured
Epigenetic Repression
Female
Gene Expression Regulation, Neoplastic
HEK293 Cells
HeLa Cells
Humans
Methyltransferases
Models, Molecular
Protein Binding
Repressor Proteins
Snail Family Transcription Factors
Transcription Factors
