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(American Journal of Pathology. 2003;163:2139-2148.)
© 2003 American Society for Investigative Pathology

Review Article

The Epithelial Cell Adhesion Molecule (Ep-CAM) as a Morphoregulatory Molecule Is a Tool in Surgical Pathology

Manon J. Winter*, Iris D. Nagtegaal{dagger}, J. Han J. M. van Krieken{dagger} and Sergey V. Litvinov{ddagger}

From the Department of Pathology,* Leiden University Medical Center, Leiden; the Department of Pathology,{dagger} University Medical Center St. Radboud, Nijmegen; and Pickcell Laboratories,{ddagger} Amsterdam, The Netherlands

Abstract

Cell adhesion receptors (CAMs) are actively involved in regulating various cell processes, including growth, differentiation, and cell death. Therefore, CAMs represent a large group of morphoregulating molecules, mediating cross-talk between cells and of cells with their environment. From this perspective, CAMs do contribute to cells and tissue organization, and in diseased tissue, to the disease development and biological characteristics. Therefore, observed changes in expression patterns of adhesion molecules may contribute to establish a diagnosis. A distinct shift in expression patterns in neoplastic epithelium has been described, for example for cadherins, integrins, and CD44. A relatively novel cell CAM, Ep-CAM, was first reported to be a pan-carcinoma antigen, although it is rather a marker of epithelial lineage. Several antibodies directed to Ep-CAM have been generated, and many epithelial tissues and their neoplastic appendages have been studied. This article outlines the results of these studies. Based on the results of these studies, we conclude that Ep-CAM immunohistochemistry can be a useful tool in the diagnosis of disturbed epithelial tissues.




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