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© 2001 SAGE Publications Cell Adhesion Molecules and Oral CancerDepartment of Oral Pathology, Eastman Dental Institute for Oral Health Care Sciences, University College London, 256 Gray's Inn Road, London, WC1X 8LD, UK
Department of Oral Pathology, Eastman Dental Institute for Oral Health Care Sciences, University College London, 256 Gray's Inn Road, London, WC1X 8LD, UK, P.Speight{at}eastman.ucl.ac.uk Cell adhesion molecules (CAMs) are found on the surfaces of all cells, where they bind to extracellular matrix molecules or to receptors on other cells. As well as having a structural role, CAMs function as signaling receptors, transducing signals initiated by cellular interactions which regulate many diverse processes, including cell division, migration, and differentiation. Cell adhesion molecules are essential for maintaining stable tissue structure. However, cell adhesion must be dynamic to facilitate the mobility and turnover of cells. In dynamic situations, cells alter their cell-cell and cell-matrix interactions by virtue of altered expression and function of CAMs. The expression of CAMs is normally tightly regulated, thereby controlling cell proliferation, mobility, differentiation, and survival. Many of these processes are misregulated in malignant tumors, and it has been shown that many of the characteristics of tumor cells are attributable to the aberrant expression or function of CAMs. Integrins and E-cadherin are the most important CAMs expressed by stratified squamous epithelium. Altered expression of these molecules has been found in oral carcinoma, where loss of CAM expression is often seen in poorly differentiated lesions. However, up-regulation of certain integrins, such as av(36, has consistently been found in oral cancer, suggesting that it may play an active role in disease progression.
Key Words: Oral cancer • cell adhesion molecules • integrins • cadherins • selectins • immunoglobulin superfamily • CD44.
Critical Reviews in Oral Biology & Medicine, Vol. 12, No. 6,
479-498 (2001) This article has been cited by other articles:
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