Journal Article

T cell status influences colon tumor occurrence in Min mice fed short chain fructo-oligosaccharides as a diet supplement

Fabrice Pierre, Pascale Perrin, Euphémie Bassonga, Francis Bornet, Khaled Meflah and Jean Menanteau

in Carcinogenesis

Volume 20, issue 10, pages 1953-1956
Published in print October 1999 | ISSN: 0143-3334
Published online October 1999 | e-ISSN: 1460-2180 | DOI: http://dx.doi.org/10.1093/carcin/20.10.1953
T cell status influences colon tumor occurrence in Min mice fed short chain fructo-oligosaccharides as a diet supplement

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We have previously shown that addition of short chain fructo-oligosaccharides (indigestible carbohydrates) to food prevented colon tumors in C57BL/6-ApcMin/+ mice, a model for human colon cancer. As gut-associated lymphoid tissue was concomitantly developed, we suggested that the immune response generated by this food may interfere with carcinogenesis due to involvement of mucosal cells in the regulation of tissue homeostasis. In the present experiment, we tested whether T cell status may influence colon tumor formation in Min mice fed a food supplement of short chain fructo-oligosaccharides. Min mice depleted of CD4+ and CD8+ lymphocytes developed twice as many tumors as immunocompetent mice (0.8 as compared with 0.4, the mean number in 7-week-old Min mice when food supplementation began; P = 0.02). It is concluded that food supplementation with a substrate (a known prebiotic) fermented in the colon may stimulate a mechanism of immunosurveillance that would otherwise remain inefficient.

Keywords: IEL, intraepithelial lymphocytes; PBS, phosphate-buffered saline; sc-FOSs, short chain fructo-oligosaccharides.

Journal Article.  2598 words.  Illustrated.

Subjects: Clinical Cytogenetics and Molecular Genetics

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