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Journal of Histochemistry and Cytochemistry, Vol. 49, 667-668, May 2001, Copyright © 2001, The Histochemical Society, Inc.

BRIEF REPORT

Defining a Molecularly Normal Colon

Kelley J. Murphya, Kandice R. Nielsona, and Kurt H. Albertinea,b
a Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
b Department of Pediatrics, University of Utah, Salt Lake City, Utah

Correspondence to: Kelley J. Murphy, Huntsman Cancer Inst., University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112-5550. E-mail: kelley.murphy@hci.utah.edu

As techniques evolve that allow molecular characterization of disease processes such as cancer, definition of "normal" at a molecular level becomes increasingly important. Increasingly large numbers of mutations are found at the genomic level, but whether all of those mutations contribute to the malignant state of a carcinoma cell is not clear. Without knowledge of what constitutes normality on the proteomic level in an organ or cell, we cannot determine what genomic changes are physiologically important. Traditionally, colon cancer is identified and classified by histological criteria. Margins of the colon are defined as "grossly uninvolved" when the histology is indistinguishable from that of normal (free from disease) colon. By using molecular pathology techniques and working backward from colon adenocarcinoma to hypoplastic polyps to presumably normal mucosa, we defined some of those protein differences. Our results may provide a molecular basis for identifying tumor formation and progression in situ.

(J Histochem Cytochem 49:667–668, 2001)

Key Words: colon cancer, molecular pathology, techniques, genomic mutations, histology


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