BACKGROUND/AIMS: The E-cadherin-catenin complex plays a key role in intercellular adhesion of epithelial cells. Aberrant expression and/or function of its components have been implicated in tumor progression and metastasis. We evaluated the expression of the E-cadherin-catenin complex in gastric cancer by immunohistochemistry and investigated its relationship to histopathological features. METHODOLOGY: The expression of E-cadherin, alpha-, beta-, and gamma-catenin, and p120 protein was evaluated by immunohistochemistry in 36 formalin-fixed, paraffin-embedded specimens of gastric cancer. RESULTS: In benign gastric mucosa all five molecules co-localized at the cell membrane. Reduced E-cadherin, alpha-, beta-, and gamma-catenin, and p120 expression was found in 67%, 61%, 50%, 64%, and 56% of cases, respectively. The expression of E-cadherin and beta-catenin correlated significantly with the histological type and the degree of tumor differentiation. gamma-Catenin expression correlated only with the histological type of the tumor. The expression of E-cadherin correlated significantly with alpha-, beta- and gamma-catenin, and p120 expression, respectively. The expression of E-cadherin and alpha-catenin showed the highest concordance. CONCLUSIONS: In gastric cancer, reduced E-cadherin, catenin and p120 expressions are related events with E-cadherin showing the most frequent aberrations.
BACKGROUND/AIMS: The E-cadherin-catenin complex plays a key role in intercellular adhesion of epithelial cells. Aberrant expression and/or function of its components have been implicated in tumor progression and metastasis. We evaluated the expression of the E-cadherin-catenin complex in gastric cancer by immunohistochemistry and investigated its relationship to histopathological features. METHODOLOGY: The expression of E-cadherin, alpha-, beta-, and gamma-catenin, and p120 protein was evaluated by immunohistochemistry in 36 formalin-fixed, paraffin-embedded specimens of gastric cancer. RESULTS: In benign gastric mucosa all five molecules co-localized at the cell membrane. Reduced E-cadherin, alpha-, beta-, and gamma-catenin, and p120 expression was found in 67%, 61%, 50%, 64%, and 56% of cases, respectively. The expression of E-cadherin and beta-catenin correlated significantly with the histological type and the degree of tumor differentiation. gamma-Catenin expression correlated only with the histological type of the tumor. The expression of E-cadherin correlated significantly with alpha-, beta- and gamma-catenin, and p120 expression, respectively. The expression of E-cadherin and alpha-catenin showed the highest concordance. CONCLUSIONS: In gastric cancer, reduced E-cadherin, catenin and p120 expressions are related events with E-cadherin showing the most frequent aberrations.
Authors: Emhonta Johnson; Darcie D Seachrist; Carlos M DeLeon-Rodriguez; Kristen L Lozada; John Miedler; Fadi W Abdul-Karim; Ruth A Keri Journal: J Biol Chem Date: 2010-07-01 Impact factor: 5.157
Authors: Helen J Mackay; Heather J Au; Elaine McWhirter; Thierry Alcindor; Andrea Jarvi; Katrina MacAlpine; Lisa Wang; John J Wright; Amit M Oza Journal: Invest New Drugs Date: 2011-03-12 Impact factor: 3.850