Volume 59, Issue 2 pp. 248-261
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Correlation of cellular differentiation in human colorectal carcinoma and adenoma cell lines with metabolite profiles determined by 1H magnetic resonance spectroscopy

Wanda B. MaCkinnon

Corresponding Author

Wanda B. MaCkinnon

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia. Fax: 61 2 692 4105Search for more papers by this author
Lily Huschtscha

Lily Huschtscha

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia

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Kathy Dent

Kathy Dent

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia

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Rebecca Hancock

Rebecca Hancock

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia

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Christos Paraskeva

Christos Paraskeva

Department of Pathology, University of Bristol, Bristol BS81TD, UK

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Carolyn E. Mountford

Carolyn E. Mountford

Membrane-MR Unit, Cancer Medicine, University of Sydney, Sydney, N.S.W. 2006, Australia

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First published: 15 October 1994
Citations: 46

Abstract

The aim was to determine whether proton magnetic resonance spectroscopy (MRS) could grade human colorectal cells of differing malignant potential. A cell model of tumour development and progression comprising 2 non-tumorigenic adenoma lines and 4 carcinoma lines of increasing tumorigenicity was chosen. A gradual reduction in cellular differentiation and an accumulation of genetic alterations from adenoma to carcinoma characterized the selected cell lines. One-dimensional and 2-dimensional MRS showed that reduced differentiation in the cell model correlated with an increase in the levels of lipid, metabolites, the glycosylation intermediate uridine diphospho-N-acetylglucosamine and cell-surface fucosylation. Mutations involving the K-ras, APC and DCC genes are present both in adenoma- and in carcinoma-derived lines in this model, but the first evidence of an abnormality in the p53 gene was concomitant with the cells' ability to grow as a tumour in athymic nude mice. This genetic change coincided with the detection, by MRS, of UDP-hexose (ribose moiety, 2D MRS cross peak between H2 at 4.38 ppm and HI at 5.99 ppm) and the appearance of an additional fucosyl resonance (cross peak between-CH3 at 1.41 and H5 at 4.30 ppm) in the least tumori-genic of the carcinoma cell lines. An increase in complexity of the fucosylation spectral pattern was observed with further cellular de-differentiation and increased tumorigenicity. Collectively these data support the existence of an adenoma-carcinoma sequence.

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