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KMID : 1188320140080010094
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Gut and Liver
2014 Volume.8 No. 1 p.94 ~ p.101
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Differential Expression of E-Cadherin, β-Catenin, and S100A4 in Intestinal Type and Nonintestinal Type Ampulla of Vater Cancers
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Sung Ro-Hyun
Kang Li
Han Joung-Ho
Choi Jae-Woon
Lee Sang-Hwa
Lee Tae-Hoon
Park Sang-Heum
Kim Hong-Ja
Lee Eaum-Seok
Kim Young-Suk
Choi Young-Woo
Park Seon-Mee
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Abstract
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Background/Aims:Epithelial-mesenchymal transition (EMT)-related proteins may exhibit differential expression in intestinal type or pancreatobiliary type ampulla of Vater carcinomas (AVCs). We evaluated the expression of E-cadherin, β-catenin, and S100A4 in intestinal and nonintestinal type AVCs and analyzed their relationships with clinicopathological variables and survival.
Methods:A clinicopathological review of 105 patients with AVCs and immunohistochemical staining for E-cadherin, β-catenin, and S100A4 were performed. The association between clinicopathological parameters, histological type, and expression of EMT proteins and their effects on survival were analyzed.
Results:Sixty-five intestinal type, 35 pancreatobiliary type, and five other types of AVCs were identified. The severity of EMT changes differed between the AVC types; membranous loss of E-cadherin and β-catenin was observed in nonintestinal type tumors, whereas aberrant nonmembranous β-catenin expression was observed in intestinal type tumors. EMT-related changes were more pronounced in the invasive tumor margin than in the tumor center, and these EMT-related changes were related to tumor aggressiveness. Among the clinicopathological parameters, a desmoplastic reaction was related to overall survival, and the reaction was more severe in nonintestinal type than in intestinal type AVCs.
Conclusions:Dysregulation of E-cadherin, β-cadherin, and S100A4 expression may play a role in the carcinogenesis and tumor progression of AVCs
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KEYWORD
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Ampullary adenocarcinoma, Intestinal type, Pancreatobiliary type, Epithelial-mesenchymal transition
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