14-3-3ζ Cooperates with ErbB2 to Promote Ductal Carcinoma In Situ Progression to Invasive Breast Cancer by Inducing Epithelial-Mesenchymal Transition

Jing Lu, Hua Guo, Warapen Treekitkarnmongkol, Ping Li, Jian Zhang, Bin Shi, Chen Ling, Xiaoyan Zhou, Tongzhen Chen, Paul J. Chiao, Xinhua Feng, Victoria L. Seewaldt, William J. Muller, Aysegul Sahin, Mien Chie Hung, Dihua Yu

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

Abstract

ErbB2, a metastasis-promoting oncoprotein, is overexpressed in ∼25% of invasive/metastatic breast cancers, but in 50%-60% of noninvasive ductal carcinomas in situ (DCIS). It has been puzzling how a subset of ErbB2-overexpressing DCIS develops into invasive breast cancer (IBC). We found that co-overexpression of 14-3-3ζ in ErbB2-overexpressing DCIS conferred a higher risk of progression to IBC. ErbB2 and 14-3-3ζ overexpression, respectively, increased cell migration and decreased cell adhesion, two prerequisites of tumor cell invasion. 14-3-3ζ overexpression reduced cell adhesion by activating the TGF-β/Smads pathway that led to ZFHX1B/SIP-1 upregulation, E-cadherin loss, and epithelial-mesenchymal transition. Importantly, patients whose breast tumors overexpressed both ErbB2 and 14-3-3ζ had higher rates of metastatic recurrence and death than those whose tumors overexpressed only one.

Original languageEnglish (US)
Pages (from-to)195-207
Number of pages13
JournalCancer cell
Volume16
Issue number3
DOIs
StatePublished - Sep 8 2009

Keywords

  • CELLCYCLE

ASJC Scopus subject areas

  • Oncology
  • Cell Biology
  • Cancer Research

MD Anderson CCSG core facilities

  • Flow Cytometry and Cellular Imaging Facility

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