Elevated expression of caveolin-1 in adenocarcinoma of the colon

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Abstract

Caveolins 1, 2, and 3 are the principal proteins of caveolae, the vesicular invaginations of the plasma membrane. Several reports have suggested that caveolin-1 may have a role in cellular transformation and tumorigenesis. We studied the expression of caveolin-1 and caveolin-2 in normal epithelium, adenoma, and adenocarcinoma of the colon and their possible role in tumorigenesis. Formalin-fixed, paraffin-embedded sections of 41 cases of adenocarcinoma and 13 cases of adenoma of the colon were stained immunohistochemically with anti-caveolin-1 and anti-caveolin-2 antibodies. The expression of caveolin-1 was elevated in the overwhelming majority of the adenocarcinomas, while most normal colonic epithelium and adenomas showed little or no staining. There was significant statistical correlation of the expression of caveolin-1 with adenocarcinoma but not with tumor stage. Expression of caveolin-2 was undetectable in all of the normal colonic glands, adenomas, and carcinomas. We discuss the possible clinical implications of our findings within the context of caveolins and signal transduction.

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Fine, S. W., Lisanti, M. P., Galbiati, F., & Li, M. (2001). Elevated expression of caveolin-1 in adenocarcinoma of the colon. American Journal of Clinical Pathology, 115(5), 719–724. https://doi.org/10.1309/YL54-CCU7-4V0P-FDUT

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