Modification of diet to reduce the stemness and tumorigenicity of murine and human intestinal cells

May, S. et al. (2022) Modification of diet to reduce the stemness and tumorigenicity of murine and human intestinal cells. Molecular Nutrition and Food Research, 66(19), 2200234. (doi: 10.1002/mnfr.202200234) (PMID:36045438) (PMCID:PMC9539894)

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Scope: Black raspberries (BRBs) have colorectal cancer (CRC) chemo-preventative effects. As CRC originates from an intestinal stem cell (ISC) this study has investigated the impact of BRBs on normal and mutant ISCs. Methods and results: Mice with an inducible Apcfl mutation in either the ISC (Lgr5CreERT2) or intestinal crypt (AhCre/VillinCreERT2) are fed a control or 10% BRB-supplemented diet. This study uses immunohistochemistry, gene expression analysis, and organoid culture to evaluate the effect of BRBs on intestinal homeostasis. RNAscope is performed for ISC markers on CRC adjacent normal colonic tissue pre and post BRB intervention from patients. 10% BRB diet has no overt effect on murine intestinal homeostasis, despite a reduced stem cell number. Following Apc ISC deletion, BRB diet extends lifespan and reduces tumor area. In the AhCre model, BRB diet attenuates the “crypt-progenitor” phenotype and reduces ISC marker gene expression. In ex vivo culture BRBs reduce the self-renewal capacity of murine and human Apc deficient organoids. Finally, the study observes a reduction in ISC marker gene expression in adjacent normal crypts following introduction of BRBs to the human bowel. Conclusion: BRBs play a role in CRC chemoprevention by protectively regulating the ISC compartment and further supports the use of BRBs in CRC prevention.

Item Type:Articles
Additional Information:The work was funded by Tenovus Cancer Care (PhD2013/L25; LP and KRG), World Cancer Research Fund (2013/1006; LP), Cancer Research UK Programme grant (C1295/A15937 and A17196; OJS) and a philanthropic donation from Lyndon and Shirley-Ann Wood from the Moorhouse Group Ltd. (LP).
Keywords:Anthocyanins, black raspberries, chemoprevention, colorectal cancer, intestinal stem cells.
Glasgow Author(s) Enlighten ID:Nixon, Mr Colin and May, Dr Steph and Sansom, Professor Owen
Authors: May, S., Greenow, K. R., Higgins, A. T., Derrick, A. V., Taylor, E., Pan, P., Konstantinou, M., Nixon, C., Wooley, T. E., Sansom, O. J., Wang, L.-S., and Parry, L.
College/School:College of Medical Veterinary and Life Sciences > School of Cancer Sciences
Journal Name:Molecular Nutrition and Food Research
ISSN (Online):1613-4133
Published Online:31 August 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Molecular Nutrition and Food Research 66(19): 2200234
Publisher Policy:Reproduced under a Creative Commons License

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