Elf5 inhibits the epithelial-mesenchymal transition in mammary gland development and breast cancer metastasis by transcriptionally repressing Snail2

Rumela Chakrabarti, Julie Hwang, Mario Andres Blanco, Yong Wei, Martin Lukačišin, Rose Anne Romano, Kirsten Smalley, Song Liu, Qifeng Yang, Toni Ibrahim, Laura Mercatali, Dino Amadori, Bruce G. Haffty, Satrajit Sinha, Yibin Kang

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159 Scopus citations

Abstract

The epithelial-mesenchymal transition (EMT) is a complex process that occurs during organogenesis and in cancer metastasis. Despite recent progress, the molecular pathways connecting the physiological and pathological functions of EMT need to be better defined. Here we show that the transcription factor Elf5, a key regulator of mammary gland alveologenesis, controls EMT in both mammary gland development and metastasis. We uncovered this role for Elf5 through analyses of Elf5 conditional knockout animals, various in vitro and in vivo models of EMT and metastasis, an MMTV-neu transgenic model of mammary tumour progression and clinical breast cancer samples. Furthermore, we demonstrate that Elf5 suppresses EMT by directly repressing the transcription of Snail2, a master regulator of mammary stem cells and a known inducer of EMT. These findings establish Elf5 not only as a key cell lineage regulator during normal mammary gland development, but also as a suppressor of EMT and metastasis in breast cancer.

Original languageEnglish (US)
Pages (from-to)1212-1222
Number of pages11
JournalNature cell biology
Volume14
Issue number11
DOIs
StatePublished - Nov 2012

All Science Journal Classification (ASJC) codes

  • Cell Biology

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    Chakrabarti, R., Hwang, J., Andres Blanco, M., Wei, Y., Lukačišin, M., Romano, R. A., Smalley, K., Liu, S., Yang, Q., Ibrahim, T., Mercatali, L., Amadori, D., Haffty, B. G., Sinha, S., & Kang, Y. (2012). Elf5 inhibits the epithelial-mesenchymal transition in mammary gland development and breast cancer metastasis by transcriptionally repressing Snail2. Nature cell biology, 14(11), 1212-1222. https://doi.org/10.1038/ncb2607