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[Cancer Research 61, 7792-7797, November 1, 2001]
© 2001 American Association for Cancer Research

Carcinogenesis

Identification of Tumor Markers in Models of Human Colorectal Cancer Using a 19,200-Element Complementary DNA Microarray1

Priti Hegde2, Rong Qi, Renee Gaspard, Kristie Abernathy, Sonia Dharap, Julie Earle-Hughes, Cheryl Gay, Nnenna U. Nwokekeh, Tingan Chen, Alexander I. Saeed, Vasily Sharov, Norman H. Lee, Timothy J. Yeatman3 and John Quackenbush3

The Institute for Genomic Research, Rockville, Maryland 20850 [P. H., R. Q., R. G., K. A., S. D., J. E-H., C. G., N. U. N., A. I. S., V. S., N. H. L., J. Q.], and H. Lee Moffitt Cancer Center, Tampa, Florida 33612 [T. C., T. J. Y.]

Metastasis represents a crucial transition in disease development and progression and has a profound impact on survival for a wide variety of cancers. Cell line models of metastasis have played an important role in developing our understanding of the metastatic process. We used a 19,200-element human cDNA microarray to profile transcription in three paired cell-line models of colorectal tumor metastasis. By correlating expression patterns across these cell lines, we have identified 176 genes that appear to be differentially expressed (greater than 2-fold) in all highly metastatic cell lines relative to their reference. An analysis of these genes reiterates much of our understanding of the metastatic process and suggests additional genes, many of previously uncharacterized function, that may be causatively involved in, or at least prognostic of, metastasis. Northern analysis of a limited number of these genes validates the observed pattern of expression and suggests that further investigation and functional characterization of the identified genes is warranted.




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Copyright © 2001 by the American Association for Cancer Research.