title: Expression of podoplanin and vimentin is correlated with prognosis in esophageal squamous cell carcinoma.
abstract: Podoplanin is a small membrane mucin, which is involved in cell migration and cancer cell invasion. However, the roles of podoplanin in esophageal squamous cell carcinoma (ESCC) are poorly understood. In the present study, 139 cases of surgically resected ESCC were analyzed and the clinicopathological significance of podoplanin membrane expression in ESCC was demonstrated. Podoplanin expression was positive in 66.2% (92/139) of ESCC samples; with weak expression in 32.4% (45/139), and strong expression in 33.8% (47/139). Membrane expression of podoplanin was significantly associated with tumor status (P=0.001), venous invasion (P=0.035) and Union for International Cancer Control stage (P=0.029). Patients who exhibited strong podoplanin expression, were shown to have a poorer prognosis [hazard ratio (HR), 3.949; 95% confidence interval (CI), 2.001‑7.794]. Expression of vimentin, a mesenchymal marker, was detected in 49 cases (35.3%) and was associated with venous invasion (P=0.020). Vimentin‑positive cases were also more likely to have a worse prognosis than vimentin‑negative cases (HR, 2.161; 95% CI, 1.300‑3.592). Podoplanin membrane expression was significantly correlated with vimentin cytoplasmic expression in ESCC (P<0.001). The present study confirmed that podoplanin and vimentin are independent predictors of mortality (HR, 3.084; 95% CI, 1.543‑6.164). These results suggest that podoplanin membrane expression results in epithelial‑mesenchymal transition and promotes aggressive invasion in human ESCC.
authors.affiliation: Department of Critical Care and Emergency Medicine, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan.
authors.forename: Makiko
authors.initials: M
authors.lastname: Tanaka
authors.affiliation: Department of Pathology and Bioscience, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kijima
authors.affiliation: Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan.
authors.forename: Hideo
authors.initials: H
authors.lastname: Shimada
authors.affiliation: Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan.
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Makuuchi
authors.affiliation: Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan.
authors.forename: Soji
authors.initials: S
authors.lastname: Ozawa
authors.affiliation: Department of Critical Care and Emergency Medicine, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan.
authors.forename: Sadaki
authors.initials: S
authors.lastname: Inokuchi
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000401:mortality / Q000473:pathology*; D004938:Esophageal Neoplasms / Q000378:metabolism / Q000401:mortality / Q000473:pathology*; D000077277:Esophageal Squamous Cell Carcinoma; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D008207:Lymphatic Metastasis; D008297:Male; D008562:Membrane Glycoproteins / Q000378:metabolism*; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D014746:Vimentin / Q000378:metabolism*; D000098853:Podoplanin
chemical_list: D014408:Biomarkers, Tumor; D008562:Membrane Glycoproteins; D014746:Vimentin; C117468:PDPN protein, human; D000098853:Podoplanin