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    Aberrant activation of notch signaling in human breast cancer.

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    Authors
    Stylianou, Spyros
    Clarke, Robert B
    Brennan, Keith
    Affiliation
    Wellcome Trust Centre for Cell Matrix Research, Faculty of Life Sciences, University of Manchester, Christie Hospital NHS Trust, Manchester M13 9PT, United Kingdom.
    Issue Date
    2006-02-01
    
    Metadata
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    Abstract
    A role for Notch signaling in human breast cancer has been suggested by both the development of adenocarcinomas in the murine mammary gland following pathway activation and the loss of Numb expression, a negative regulator of the Notch pathway, in a large proportion of breast carcinomas. However, it is not clear currently whether Notch signaling is frequently activated in breast tumors, and how it causes cellular transformation. Here, we show accumulation of the intracellular domain of Notch1 and hence increased Notch signaling in a wide variety of human breast carcinomas. In addition, we show that increased RBP-Jkappa-dependent Notch signaling is sufficient to transform normal breast epithelial cells and that the mechanism of transformation is most likely through the suppression of apoptosis. More significantly, we show that attenuation of Notch signaling reverts the transformed phenotype of human breast cancer cell lines, suggesting that inhibition of Notch signaling may be a therapeutic strategy for this disease.
    Citation
    Aberrant activation of notch signaling in human breast cancer. 2006, 66 (3):1517-25 Cancer Res.
    Journal
    Cancer Research
    URI
    http://hdl.handle.net/10541/72749
    DOI
    10.1158/0008-5472.CAN-05-3054
    PubMed ID
    16452208
    Type
    Article
    Language
    en
    ISSN
    0008-5472
    ae974a485f413a2113503eed53cd6c53
    10.1158/0008-5472.CAN-05-3054
    Scopus Count
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    All Paterson Institute for Cancer Research

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