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  • Altered E-cadherin expression and p120 catenin localization in esophageal squamous cell carcinoma

    Author
    Chung, Yvonne
    Lam, Alfred
    M. Luk, John
    Law, Simon
    Chan, Kwok-Wah
    Lee, Ping-Yin
    Wong, John
    Year published
    2007
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    Abstract
    Background E-cadherin is a well-known tumor suppressor and its dysregulated expression correlates with tumor differentiation, metastasis and survival in esophageal squamous cell carcinoma (ESCC). p120 catenin is an Armadillo protein normally bound to E-cadherin in the cadherin-catenin complex at the adherens junction. Dysregulated expression and mislocalization of p120ctn affect the protective function of the complex. The objective of the present study was to evaluate the clinical significance of E-cadherin and p120ctn expression in ESCC. Methods Immunohistochemistry was performed to investigate the expression of E-cadherin ...
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    Background E-cadherin is a well-known tumor suppressor and its dysregulated expression correlates with tumor differentiation, metastasis and survival in esophageal squamous cell carcinoma (ESCC). p120 catenin is an Armadillo protein normally bound to E-cadherin in the cadherin-catenin complex at the adherens junction. Dysregulated expression and mislocalization of p120ctn affect the protective function of the complex. The objective of the present study was to evaluate the clinical significance of E-cadherin and p120ctn expression in ESCC. Methods Immunohistochemistry was performed to investigate the expression of E-cadherin and p120ctn proteins in 71 patients with ESCC. The relationships between protein expression and clinicopathological characteristics were analyzed. Results Reduced E-cadherin and p120ctn expressions were observed in 42.3% and 8.5% of ESCC cases, respectively. Reduction of membranous p120ctn was observed in 33.8% of cases. Membranous E-cadherin was preserved when p120ctn co-localized on the membrane of tumor cells (72.3%, P = 0.001). High level E-cadherin expression and membranous p120ctn preservation positively correlated with tumor differentiation (P = 0.001 and P = 0.008, respectively). p120ctn expression was also significantly related to lymph node metastasis (P = 0.003). Heterogeneous expression of both E-cadherin and p120ctn was observed in dysplasia. Conclusions Altered E-cadherin expression and p120ctn localization were related to tumor differentiation, indicating their important roles in the pathogenesis of ESCC.
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    Journal Title
    Annals of Surgical Oncology
    Volume
    14
    Issue
    11
    DOI
    https://doi.org/10.1245/s10434-007-9511-8
    Publication URI
    http://hdl.handle.net/10072/17373
    Collection
    • Journal articles

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