title: Prognostic significance of dysadherin expression in tongue cancer: immunohistochemical analysis of 91 cases.
abstract: The E-cadherin-mediated cell adhesion system is frequently inactivated by multiple mechanisms and is involved in tumor progression in many types of cancer. Recently we have reported a novel cell membrane glycoprotein, dysadherin, which has an anti-cell-cell adhesion function and downregulates E-cadherin. Expressions of dysadherin and E-cadherin were investigated immunohistochemically in 91 patients with squamous cell carcinoma of the tongue to determine the correlation between the 2 molecules and their associations with the clinicopathologic features of the tumors and with patient survival. Dysadherin was expressed at the cell membranes of many cancer cells. Twenty-five percent of the tumors showed dysadherin immunopositivity in more than 50% of the cancer cells. Sixty-nine percent of the tumors showed reduced E-cadherin immunopositivity. There was an inverse correlation between dysadherin expression and E-cadherin expression (P = 0.0001). Increased dysadherin expression was significantly correlated with an infiltrative type of growth pattern (P = 0.001), high tumor-node-metastasis (TNM) stage (P = 0.024), and poor patient survival (P = 0.003). After adjusting for growth pattern, TNM stage, and other clinicopathologic features, increased dysadherin expression and reduced E-cadherin expression were both significant predictors of poor survival (P = 0.0006). Increased dysadherin expression is a significant indicator of poor prognosis in patients with squamous cell carcinoma of the tongue.
authors.affiliation: Pathology Division, National Cancer Center Research Institute, Tokyo, Japan.
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Nakanishi
authors.forename: Shingo
authors.initials: S
authors.lastname: Akimoto
authors.forename: Yasuto
authors.initials: Y
authors.lastname: Sato
authors.forename: Yae
authors.initials: Y
authors.lastname: Kanai
authors.forename: Michiie
authors.initials: M
authors.lastname: Sakamoto
authors.forename: Setsuo
authors.initials: S
authors.lastname: Hirohashi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015820:Cadherins / Q000032:analysis / Q000378:metabolism; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000401:mortality*; D042783:Endothelial Cells / Q000276:immunology; D004848:Epithelium / Q000276:immunology / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007473:Ion Channels; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D008562:Membrane Glycoproteins / Q000032:analysis* / Q000378:metabolism; D008840:Microfilament Proteins; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000032:analysis* / Q000378:metabolism; D009367:Neoplasm Staging; D011379:Prognosis; D014062:Tongue Neoplasms / Q000175:diagnosis / Q000401:mortality*
chemical_list: D015820:Cadherins; C451410:FXYD5 protein, human; D007473:Ion Channels; D008562:Membrane Glycoproteins; D008840:Microfilament Proteins; D009363:Neoplasm Proteins