The miR-200 family determines the epithelial phenotype of cancer cells by targeting the E-cadherin repressors ZEB1 and ZEB2

Sun Mi Park, Arti B. Gaur, Ernst Lengyel, Marcus E. Peter

Research output: Contribution to journalArticlepeer-review

1715 Scopus citations

Abstract

Cancer progression has similarities with the process of epithelial-to-mesenchymal transition (EMT) found during embryonic development, during which cells down-regulate E-cadherin and up-regulate Vimentin expression. By evaluating the expression of 207 microRNAs (miRNAs) in the 60 cell lines of the drug screening panel maintained by the Nation Cancer Institute, we identified the miR-200 miRNA family as an extraordinary marker for cells that express E-cadherin but lack expression of Vimentin. These findings were extended to primary ovarian cancer specimens. miR-200 was found to directly target the mRNA of the E-cadherin transcriptional repressors ZEB1 (TCF8/δEF1) and ZEB2 (SMAD-interacting protein 1 [SIP1]/ZFXH1B). Ectopic expression of miR-200 caused up-regulation of E-cadherin in cancer cell lines and reduced their motility. Conversely, inhibition of miR-200 reduced E-cadherin expression, increased expression of Vimentin, and induced EMT. Our data identify miR-200 as a powerful marker and determining factor of the epithelial phenotype of cancer cells.

Original languageEnglish (US)
Pages (from-to)894-907
Number of pages14
JournalGenes and Development
Volume22
Issue number7
DOIs
StatePublished - Apr 1 2008

Keywords

  • EMT
  • NCI60
  • Ovarian cancer
  • Tumor progression

ASJC Scopus subject areas

  • Genetics
  • Developmental Biology

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