Title |
Autocrine WNT signaling contributes to breast cancer cell proliferation via the canonical WNT pathway and EGFR transactivation
|
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Published in |
Breast Cancer Research, September 2007
|
DOI | 10.1186/bcr1769 |
Pubmed ID | |
Authors |
Thomas Schlange, Yutaka Matsuda, Susanne Lienhard, Alexandre Huber, Nancy E Hynes |
Abstract |
De-regulation of the wingless and integration site growth factor (WNT) signaling pathway via mutations in APC and Axin, proteins that target beta-catenin for destruction, have been linked to various types of human cancer. These genetic alterations rarely, if ever, are observed in breast tumors. However, various lines of evidence suggest that WNT signaling may also be de-regulated in breast cancer. Most breast tumors show hypermethylation of the promoter region of secreted Frizzled-related protein 1 (sFRP1), a negative WNT pathway regulator, leading to downregulation of its expression. As a consequence, WNT signaling is enhanced and may contribute to proliferation of human breast tumor cells. We previously demonstrated that, in addition to the canonical WNT/beta-catenin pathway, WNT signaling activates the extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in mouse mammary epithelial cells via epidermal growth factor receptor (EGFR) transactivation. |
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United States | 4 | 2% |
India | 2 | <1% |
Chile | 1 | <1% |
France | 1 | <1% |
South Africa | 1 | <1% |
Spain | 1 | <1% |
United Kingdom | 1 | <1% |
Unknown | 215 | 95% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 58 | 26% |
Student > Ph. D. Student | 41 | 18% |
Student > Bachelor | 33 | 15% |
Student > Master | 20 | 9% |
Student > Doctoral Student | 13 | 6% |
Other | 39 | 17% |
Unknown | 22 | 10% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 102 | 45% |
Biochemistry, Genetics and Molecular Biology | 50 | 22% |
Medicine and Dentistry | 24 | 11% |
Chemistry | 5 | 2% |
Pharmacology, Toxicology and Pharmaceutical Science | 5 | 2% |
Other | 15 | 7% |
Unknown | 25 | 11% |