ErbB-β-catenin complexes are associated with human infiltrating ductal breast and murine mammary tumor virus (MMTV)-Wnt-1 and MMTV-c-Neu transgenic carcinomas

Joyce Schroeder, Melissa C. Adriance, Elizabeth J. McConnell, Melissa C. Thompson, Barbara Pockaj, Sandra J. Gendler

Research output: Contribution to journalArticle

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Abstract

Simultaneous deregulation of both Wnt and ErbB growth factors has previously been shown to result in the cooperative induction of mammary gland tumors. Using the murine mammary tumor virus (MMTV)-Wnt-1 transgenic model of mammary carcinoma, we have identified an unvarying association between β-catenin and epidermal growth factor receptor/c-Neu (ErbB1/ErbB2) heterodimers in mammary gland tumors, indicating a requirement for ErbB signaling in Wnt-mediated tumorigenesis. Expansion of these observations to a second transgenic model, MMTV-c-Neu, demonstrated similar tumor-specific interactions, including an ErbB1 ligand-inducible phosphorylation of both β-catenin and c-Neu. Direct relevance of these findings to human breast cancer was established upon examination of a set of human infiltrating ductal breast adenocarcinoma and lymph node metastasis tissues taken at surgery. These data revealed increased levels of β-catenin in tumors and metastases versus normal breast as well as an association between β-catenin and c-Neu that measurably occurs only in neoplasia, most strongly in metastatic lesions. These studies have identified a seemingly indispensable interaction between β-catenin and epidermal growth factor receptor/c-Neu heterodimers in Wnt-1-mediated breast tumorigenesis that may indicate a fundamental signaling event in human metastatic progression.

Original languageEnglish (US)
Pages (from-to)22692-22698
Number of pages7
JournalJournal of Biological Chemistry
Volume277
Issue number25
DOIs
StatePublished - Jun 21 2002

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Gammaretrovirus
Catenins
Viruses
Tumors
Breast
Breast Neoplasms
Carcinoma
Human Mammary Glands
Epidermal Growth Factor Receptor
Carcinogenesis
Association reactions
Neoplasm Metastasis
Neoplasms
Phosphorylation
Deregulation
Surgery
Intercellular Signaling Peptides and Proteins
Adenocarcinoma
Lymph Nodes
Tissue

ASJC Scopus subject areas

  • Biochemistry

Cite this

ErbB-β-catenin complexes are associated with human infiltrating ductal breast and murine mammary tumor virus (MMTV)-Wnt-1 and MMTV-c-Neu transgenic carcinomas. / Schroeder, Joyce; Adriance, Melissa C.; McConnell, Elizabeth J.; Thompson, Melissa C.; Pockaj, Barbara; Gendler, Sandra J.

In: Journal of Biological Chemistry, Vol. 277, No. 25, 21.06.2002, p. 22692-22698.

Research output: Contribution to journalArticle

Schroeder, Joyce ; Adriance, Melissa C. ; McConnell, Elizabeth J. ; Thompson, Melissa C. ; Pockaj, Barbara ; Gendler, Sandra J. / ErbB-β-catenin complexes are associated with human infiltrating ductal breast and murine mammary tumor virus (MMTV)-Wnt-1 and MMTV-c-Neu transgenic carcinomas. In: Journal of Biological Chemistry. 2002 ; Vol. 277, No. 25. pp. 22692-22698.
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